v3.25.2
Shareholder Report
12 Months Ended
May 31, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name TIAA-CREF Funds
Entity Central Index Key 0001084380
Entity Investment Company Type N-1A
Document Period End Date May 31, 2025
C000079533 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2025 Fund
Class Name Class R6 Shares
Trading Symbol TLQIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle Index 2025 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $10    0.10%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 10
Expense Ratio, Percent 0.10% [1]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2025 Fund returned 9.42% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund performed in line with the Lifecycle Index 2025 Fund Composite Index, which returned 9.64%.
 
•  The Fund’s Composite Index consisted of: 37.9% Bloomberg U.S. Aggregate Bond Index; 32.6% Russell 3000® Index; 17.5% MSCI EAFE + Emerging Markets Index; 6.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 6.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     9.42      7.30      6.55
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2025 Fund Composite Index
     9.64      7.41      6.63
       
S&P Target Date 2025 Index
     8.82      7.23      6.16
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 6,030,274,815
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 9,875,884
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 6,030,274,815  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
   $ 9,875,884  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079534 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2025 Fund
Class Name Premier Class Shares
Trading Symbol TLVPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle Index 2025 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en-us/mutual-funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $26    0.25%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [2]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2025 Fund returned 9.26% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2025 Fund Composite Index, which returned 9.64%.
 
•  The Fund’s Composite Index consisted of: 37.9% Bloomberg U.S. Aggregate Bond Index; 32.6% Russell 3000® Index; 17.5% MSCI EAFE + Emerging Markets Index; 6.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 6.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     9.26      7.15      6.40
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2025 Fund Composite Index
     9.64      7.41      6.63
       
S&P Target Date 2025 Index
     8.82      7.23      6.16
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 6,030,274,815
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 9,875,884
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 6,030,274,815  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
   $ 9,875,884  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079535 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2025 Fund
Class Name Retirement Class Shares
Trading Symbol TLQRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle Index 2025 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $37    0.35%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.35% [3]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2025 Fund returned 9.13% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2025 Fund Composite Index, which returned 9.64%.
 
•  The Fund’s Composite Index consisted of: 37.9% Bloomberg U.S. Aggregate Bond Index; 32.6% Russell 3000® Index; 17.5% MSCI EAFE + Emerging Markets Index; 6.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 6.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     9.13      7.04      6.29
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2025 Fund Composite Index
     9.64      7.41      6.63
       
S&P Target Date 2025 Index
     8.82      7.23      6.16
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 6,030,274,815
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 9,875,884
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 6,030,274,815  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
   $ 9,875,884  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162582 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2025 Fund
Class Name Class I Shares
Trading Symbol TLQHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle Index 2025 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $12    0.11%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 12
Expense Ratio, Percent 0.11% [4]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2025 Fund returned 9.37% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2025 Fund Composite Index, which returned 9.64%.
 
•  The Fund’s Composite Index consisted of: 37.9% Bloomberg U.S. Aggregate Bond Index; 32.6% Russell 3000® Index; 17.5% MSCI EAFE + Emerging Markets Index; 6.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 6.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since Inception 
       
Class I Shares at NAV
     9.37      7.21     7.10%
       
Russell 3000® Index
     13.12      15.34    13.00%
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%      1.60%
       
Lifecycle Index 2025 Fund Composite Index
     9.64      7.41     7.28%
       
S&P Target Date 2025 Index
     8.82      7.23     6.75%
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 6,030,274,815
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 9,875,884
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $6,030,274,815  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
     $    9,875,884  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079536 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2030 Fund
Class Name Class R6 Shares
Trading Symbol TLHIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle Index 2030 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $11    0.10%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 11
Expense Ratio, Percent 0.10% [5]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2030 Fund returned 10.01% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund performed in line with the Lifecycle Index 2030 Fund Composite Index, which returned 10.23%.
 
•  The Fund’s Composite Index consisted of: 37.8% Russell 3000® Index; 33.9% Bloomberg U.S. Aggregate Bond Index; 20.3% MSCI EAFE + Emerging Markets Index; 4.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 4.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
 
 
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     10.01      8.33      7.20
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2030 Fund Composite Index
     10.23      8.44      7.28
       
S&P Target Date 2030 Index
     9.51      8.53      6.87
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 8,826,858,954
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 13,474,913
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 8,826,858,954  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
   $ 13,474,913  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079537 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2030 Fund
Class Name Premier Class Shares
Trading Symbol TLHPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle Index 2030 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $26    0.25%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [6]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2030 Fund returned 9.83% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2030 Fund Composite Index, which returned 10.23%.
 
•  The Fund’s Composite Index consisted of: 37.8% Russell 3000® Index; 33.9% Bloomberg U.S. Aggregate Bond Index; 20.3% MSCI EAFE + Emerging Markets Index; 4.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 4.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
 
 
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     9.83      8.17      7.03
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2030 Fund Composite Index
     10.23      8.44      7.28
       
S&P Target Date 2030 Index
     9.51      8.53      6.87
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 8,826,858,954
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 13,474,913
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 8,826,858,954  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
   $ 13,474,913  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079538 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2030 Fund
Class Name Retirement Class Shares
Trading Symbol TLHRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle Index 2030 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $37    0.35%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.35% [7]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2030 Fund returned 9.71% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2030 Fund Composite Index, which returned 10.23%.
 
•  The Fund’s Composite Index consisted of: 37.8% Russell 3000® Index; 33.9% Bloomberg U.S. Aggregate Bond Index; 20.3% MSCI EAFE + Emerging Markets Index; 4.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 4.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
 
 
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     9.71      8.07      6.93
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2030 Fund Composite Index
     10.23      8.44      7.28
       
S&P Target Date 2030 Index
     9.51      8.53      6.87
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 8,826,858,954
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 13,474,913
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 8,826,858,954  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
   $ 13,474,913  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162583 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2030 Fund
Class Name Class I Shares
Trading Symbol TLHHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle Index 2030 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $12    0.11%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 12
Expense Ratio, Percent 0.11% [8]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2030 Fund returned 9.96% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2030 Fund Composite Index, which returned 10.23%.
 
•  The Fund’s Composite Index consisted of: 37.8% Russell 3000® Index; 33.9% Bloomberg U.S. Aggregate Bond Index; 20.3% MSCI EAFE + Emerging Markets Index; 4.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 4.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since Inception 
       
Class I Shares at NAV
     9.96      8.24     7.81%
       
Russell 3000® Index
     13.12      15.34    13.00%
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%      1.60%
       
Lifecycle Index 2030 Fund Composite Index
     10.23      8.44     7.99%
       
S&P Target Date 2030 Index
     9.51      8.53     7.53%
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 8,826,858,954
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 13,474,913
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $8,826,858,954  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
     $   13,474,913  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162584 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2035 Fund
Class Name Class I Shares
Trading Symbol TLYHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle Index 2035 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $12    0.11%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 12
Expense Ratio, Percent 0.11% [9]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2035 Fund returned 10.56% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2035 Fund Composite Index, which returned 10.86%.
 
•  The Fund’s Composite Index consisted of: 43.0% Russell 3000® Index; 29.8% Bloomberg U.S. Aggregate Bond Index; 23.2% MSCI EAFE + Emerging Markets Index; 2.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 2.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since Inception 
       
Class I Shares at NAV
     10.56      9.38     8.57%
       
Russell 3000® Index
     13.12      15.34    13.00%
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%      1.60%
       
Lifecycle Index 2035 Fund Composite Index
     10.86      9.60     8.75%
       
S&P Target Date 2035 Index
     10.24      9.95     8.34%
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 9,649,276,577
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 14,023,410
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $9,649,276,577  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
     $   14,023,410  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079539 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2035 Fund
Class Name Class R6 Shares
Trading Symbol TLYIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle Index 2035 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $11    0.10%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 11
Expense Ratio, Percent 0.10% [10]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2035 Fund returned 10.57% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2035 Fund Composite Index, which returned 10.86%.
 
•  The Fund’s Composite Index consisted of: 43.0% Russell 3000® Index; 29.8% Bloomberg U.S. Aggregate Bond Index; 23.2% MSCI EAFE + Emerging Markets Index; 2.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 2.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
 
 
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     10.57      9.47      7.88
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2035 Fund Composite Index
     10.86      9.60      7.95
       
S&P Target Date 2035 Index
     10.24      9.95      7.61
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 9,649,276,577
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 14,023,410
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 9,649,276,577  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
   $ 14,023,410  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079540 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2035 Fund
Class Name Premier Class Shares
Trading Symbol TLYPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle Index 2035 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $26    0.25%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [11]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2035 Fund returned 10.45% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2035 Fund Composite Index, which returned 10.86%.
 
•  The Fund’s Composite Index consisted of: 43.0% Russell 3000® Index; 29.8% Bloomberg U.S. Aggregate Bond Index; 23.2% MSCI EAFE + Emerging Markets Index; 2.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 2.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     10.45      9.30      7.71
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2035 Fund Composite Index
     10.86      9.60      7.95
       
S&P Target Date 2035 Index
     10.24      9.95      7.61
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 9,649,276,577
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 14,023,410
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 9,649,276,577  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
   $ 14,023,410  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079541 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2035 Fund
Class Name Retirement Class Shares
Trading Symbol TLYRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle Index 2035 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $37    0.35%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.35% [12]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2035 Fund returned 10.34% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2035 Fund Composite Index, which returned 10.86%.
 
•  The Fund’s Composite Index consisted of: 43.0% Russell 3000® Index; 29.8% Bloomberg U.S. Aggregate Bond Index; 23.2% MSCI EAFE + Emerging Markets Index; 2.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 2.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     10.34      9.19      7.60
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2035 Fund Composite Index
     10.86      9.60      7.95
       
S&P Target Date 2035 Index
     10.24      9.95      7.61
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 9,649,276,577
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 14,023,410
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 9,649,276,577  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
   $ 14,023,410  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079542 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2040 Fund
Class Name Class R6 Shares
Trading Symbol TLZIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle Index 2040 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $11    0.10%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 11
Expense Ratio, Percent 0.10% [13]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2040 Fund returned 11.44% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2040 Fund Composite Index, which returned 11.72%.
 
•  The Fund’s Composite Index consisted of: 50.8% Russell 3000® Index; 27.3% MSCI EAFE + Emerging Markets Index; and 21.9% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     11.44      10.80      8.61
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2040 Fund Composite Index
     11.72      10.94      8.70
       
S&P Target Date 2040 Index
     10.87      11.07      8.19
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 10,206,947,097
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 14,334,217
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 10,206,947,097  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     12%  
Total management fees paid for the year
   $ 14,334,217  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079543 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2040 Fund
Class Name Premier Class Shares
Trading Symbol TLPRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle Index 2040 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $26    0.25%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [14]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2040 Fund returned 11.28% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2040 Fund Composite Index, which returned 11.72%.
 
•  The Fund’s Composite Index consisted of: 50.8% Russell 3000® Index; 27.3% MSCI EAFE + Emerging Markets Index; and 21.9% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     11.28      10.64      8.45
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2040 Fund Composite Index
     11.72      10.94      8.70
       
S&P Target Date 2040 Index
     10.87      11.07      8.19
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 10,206,947,097
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 14,334,217
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 10,206,947,097  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     12%  
Total management fees paid for the year
   $ 14,334,217  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079544 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2040 Fund
Class Name Retirement Class Shares
Trading Symbol TLZRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle Index 2040 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $37    0.35%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.35% [15]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2040 Fund returned 11.18% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2040 Fund Composite Index, which returned 11.72%.
 
•  The Fund’s Composite Index consisted of: 50.8% Russell 3000® Index; 27.3% MSCI EAFE + Emerging Markets Index; and 21.9% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     11.18      10.53      8.35
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2040 Fund Composite Index
     11.72      10.94      8.70
       
S&P Target Date 2040 Index
     10.87      11.07      8.19
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 10,206,947,097
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 14,334,217
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 10,206,947,097  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     12%  
Total management fees paid for the year
   $ 14,334,217  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162585 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2040 Fund
Class Name Class I Shares
Trading Symbol TLZHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle Index 2040 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $12    0.11%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 12
Expense Ratio, Percent 0.11% [16]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2040 Fund returned 11.46% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2040 Fund Composite Index, which returned 11.72%.
 
•  The Fund’s Composite Index consisted of: 50.8% Russell 3000® Index; 27.3% MSCI EAFE + Emerging Markets Index; and 21.9% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since Inception 
       
Class I Shares at NAV
     11.46      10.72     9.39%
       
Russell 3000® Index
     13.12      15.34    13.00%
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%      1.60%
       
Lifecycle Index 2040 Fund Composite Index
     11.72      10.94     9.57%
       
S&P Target Date 2040 Index
     10.87      11.07     8.97%
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 10,206,947,097
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 14,334,217
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $10,206,947,097  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     12%  
Total management fees paid for the year
     $    14,334,217  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162586 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2045 Fund
Class Name Class I Shares
Trading Symbol TLMHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle Index 2045 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $12    0.11%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 12
Expense Ratio, Percent 0.11% [17]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2045 Fund returned 12.04% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2045 Fund Composite Index, which returned 12.31%.
 
•  The Fund’s Composite Index consisted of: 56.0% Russell 3000® Index; 30.1% MSCI EAFE + Emerging Markets Index; and 13.9% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
 
 
 
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since Inception 
       
Class I Shares at NAV
     12.04      11.77     9.95%
       
Russell 3000® Index
     13.12      15.34    13.00%
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%      1.60%
       
Lifecycle Index 2045 Fund Composite Index
     12.31      11.99    10.15%
       
S&P Target Date 2045 Index
     11.33      11.80     9.37%
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 8,792,581,032
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 12,090,250
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $8,792,581,032  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     11%  
Total management fees paid for the year
     $   12,090,250  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079545 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2045 Fund
Class Name Class R6 Shares
Trading Symbol TLXIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle Index 2045 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $11    0.10%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 11
Expense Ratio, Percent 0.10% [18]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2045 Fund returned 12.05% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2045 Fund Composite Index, which returned 12.31%.
 
•  The Fund’s Composite Index consisted of: 56.0% Russell 3000® Index; 30.1% MSCI EAFE + Emerging Markets Index; and 13.9% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     12.05      11.86      9.16
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2045 Fund Composite Index
     12.31      11.99      9.24
       
S&P Target Date 2045 Index
     11.33      11.80      8.56
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 8,792,581,032
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 12,090,250
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 8,792,581,032  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     11%  
Total management fees paid for the year
   $ 12,090,250  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079546 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2045 Fund
Class Name Premier Class Shares
Trading Symbol TLMPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle Index 2045 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $26    0.25%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [19]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2045 Fund returned 11.86% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2045 Fund Composite Index, which returned 12.31%.
 
•  The Fund’s Composite Index consisted of: 56.0% Russell 3000® Index; 30.1% MSCI EAFE + Emerging Markets Index; and 13.9% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     11.86      11.70      8.99
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2045 Fund Composite Index
     12.31      11.99      9.24
       
S&P Target Date 2045 Index
     11.33      11.80      8.56
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 8,792,581,032
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 12,090,250
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 8,792,581,032  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     11%  
Total management fees paid for the year
   $ 12,090,250  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079547 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2045 Fund
Class Name Retirement Class Shares
Trading Symbol TLMRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle Index 2045 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $37    0.35%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.35% [20]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2045 Fund returned 11.77% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2045 Fund Composite Index, which returned 12.31%.
 
•  The Fund’s Composite Index consisted of: 56.0% Russell 3000® Index; 30.1% MSCI EAFE + Emerging Markets Index; and 13.9% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     11.77      11.58      8.88
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2045 Fund Composite Index
     12.31      11.99      9.24
       
S&P Target Date 2045 Index
     11.33      11.80      8.56
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 8,792,581,032
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 12,090,250
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 8,792,581,032  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     11%  
Total management fees paid for the year
   $ 12,090,250  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000099416 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2055 Fund
Class Name Retirement Class Shares
Trading Symbol TTRLX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle 2055 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $52    0.50%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 52
Expense Ratio, Percent 0.50% [21]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2055 Fund returned 9.25% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2055 Fund Composite Index, which returned 12.76%.
 
•  The Fund’s Composite Index consisted of: 59.3% Russell 3000® Index; 32.0% MSCI All Country World Index ex USA Investable Market Index; and 8.7% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     9.25      11.49      8.56
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2055 Fund Composite Index
     12.76      12.57      9.57
       
S&P Target Date 2055 Index
     11.61      12.27      8.83
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 1,854,725,709
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 7,594,169
Investment Company Portfolio Turnover 19.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 1,854,725,709  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     19%  
Total management fees paid for the year
   $ 7,594,169  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000099417 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2055 Fund
Class Name Class R6 Shares
Trading Symbol TTRIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle 2055 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Class R6 Shares
  $26    0.25%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
 
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [22]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance? 
Performance Highlights
 
•  The Nuveen Lifecycle 2055 Fund returned 9.53% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2055 Fund Composite Index, which returned 12.76%.
 
•  The Fund’s Composite Index consisted of: 59.3% Russell 3000® Index; 32.0% MSCI All Country World Index ex USA Investable Market Index; and 8.7% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Class R6 Shares at NAV
     9.53      11.76      8.83
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle 2055 Fund Composite Index
     12.76      12.57      9.57
S&P Target Date 2055 Index
     11.61      12.27      8.83
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 1,854,725,709
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 7,594,169
Investment Company Portfolio Turnover 19.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 1,854,725,709  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     19%  
Total management fees paid for the year
   $ 7,594,169  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000099418 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2055 Fund
Class Name Premier Class Shares
Trading Symbol TTRPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle 2055 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Premier Class Shares
  $42    0.40%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.40% [23]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2055 Fund returned 9.41% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2055 Fund Composite Index, which returned 12.76%.
 
•  The Fund’s Composite Index consisted of: 59.3% Russell 3000® Index; 32.0% MSCI All Country World Index ex USA Investable Market Index; and 8.7% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Premier Class Shares at NAV
     9.41      11.60      8.67
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle 2055 Fund Composite Index
     12.76      12.57      9.57
S&P Target Date 2055 Index
     11.61      12.27      8.83
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 1,854,725,709
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 7,594,169
Investment Company Portfolio Turnover 19.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 1,854,725,709  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     19%  
Total management fees paid for the year
   $ 7,594,169  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162591 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2055 Fund
Class Name Class I Shares
Trading Symbol TTRHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle 2055 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Class I Shares
  $29    0.28%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.28% [24]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2055 Fund returned 9.54% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2055 Fund Composite Index, which returned 12.76%.
 
•  The Fund’s Composite Index consisted of: 59.3% Russell 3000® Index; 32.0% MSCI All Country World Index ex USA Investable Market Index; and 8.7% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      Since Inception  
Class I Shares at NAV
     9.54      11.71      9.67
Russell 3000® Index
     13.12      15.34      13.00
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
Lifecycle 2055 Fund Composite Index
     12.76      12.57      10.51
S&P Target Date 2055 Index
     11.61      12.27      9.68
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 1,854,725,709
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 7,594,169
Investment Company Portfolio Turnover 19.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 1,854,725,709  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     19%  
Total management fees paid for the year
   $ 7,594,169  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107517 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Aggressive Growth Fund
Class Name Class R6 Shares
Trading Symbol TSAIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifestyle Aggressive Growth Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $10    0.10%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 10
Expense Ratio, Percent 0.10% [25]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Aggressive Growth Fund returned 9.76% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Aggressive Growth Fund Composite Index, which returned 13.43%.
 
•  The Fund’s Composite Index consisted of: 65.0% Russell 3000® Index; and 35.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
 
 
 
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     9.76      12.49      9.16
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Aggressive Growth Fund Composite Index
     13.43      13.74      10.13
       
Morningstar Aggressive Target Risk Index
     13.29      12.22      8.77
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 243,194,466
Holdings Count | Holding 13
Advisory Fees Paid, Amount $ 250,898
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 243,194,466  
Total number of portfolio holdings
     13  
Portfolio turnover (%)
     16%  
Total management fees paid for the year
   $ 250,898  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079548 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2050 Fund
Class Name Class R6 Shares
Trading Symbol TLLIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle Index 2050 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $11    0.10%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 11
Expense Ratio, Percent 0.10% [26]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2050 Fund returned 12.30% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2050 Fund Composite Index, which returned 12.60%.
 
•  The Fund’s Composite Index consisted of: 58.5% Russell 3000® Index; 31.5% MSCI EAFE + Emerging Markets Index; and 10.0% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     12.30      12.17      9.34
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2050 Fund Composite Index
     12.60      12.31      9.42
       
S&P Target Date 2050 Index
     11.41      12.12      8.75
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 7,598,502,604
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 10,284,015
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $7,598,502,604  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     10%  
Total management fees paid for the year
     $   10,284,015  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079549 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2050 Fund
Class Name Premier Class Shares
Trading Symbol TLLPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle Index 2050 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $27    0.25%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.25% [27]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2050 Fund returned 12.13% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2050 Fund Composite Index, which returned 12.60%.
 
•  The Fund’s Composite Index consisted of: 58.5% Russell 3000® Index; 31.5% MSCI EAFE + Emerging Markets Index; and 10.0% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     12.13      12.01      9.18
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2050 Fund Composite Index
     12.60      12.31      9.42
       
S&P Target Date 2050 Index
     11.41      12.12      8.75
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 7,598,502,604
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 10,284,015
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $7,598,502,604  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     10%  
Total management fees paid for the year
     $   10,284,015  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079550 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2050 Fund
Class Name Retirement Class Shares
Trading Symbol TLLRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle Index 2050 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $37    0.35%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.35% [28]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2050 Fund returned 12.04% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2050 Fund Composite Index, which returned 12.60%.
 
•  The Fund’s Composite Index consisted of: 58.5% Russell 3000® Index; 31.5% MSCI EAFE + Emerging Markets Index; and 10.0% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     12.04      11.89      9.07
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2050 Fund Composite Index
     12.60      12.31      9.42
       
S&P Target Date 2050 Index
     11.41      12.12      8.75
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 7,598,502,604
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 10,284,015
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $7,598,502,604  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     10%  
Total management fees paid for the year
     $   10,284,015  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162587 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2050 Fund
Class Name Class I Shares
Trading Symbol TLLHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle Index 2050 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $12    0.11%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 12
Expense Ratio, Percent 0.11% [29]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2050 Fund returned 12.29% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2050 Fund Composite Index, which returned 12.60%.
 
•  The Fund’s Composite Index consisted of: 58.5% Russell 3000® Index; 31.5% MSCI EAFE + Emerging Markets Index; and 10.0% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since Inception  
       
Class I Shares at NAV
     12.29      12.08      10.16
       
Russell 3000® Index
     13.12      15.34      13.00
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
       
Lifecycle Index 2050 Fund Composite Index
     12.60      12.31      10.34
       
S&P Target Date 2050 Index
     11.41      12.12      9.58
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 7,598,502,604
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 10,284,015
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 7,598,502,604  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     10%  
Total management fees paid for the year
   $ 10,284,015  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000099413 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2055 Fund
Class Name Retirement Class Shares
Trading Symbol TTIRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle Index 2055 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $37    0.35%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.35% [30]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2055 Fund returned 12.10% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2055 Fund Composite Index, which returned 12.70%.
 
•  The Fund’s Composite Index consisted of: 59.3% Russell 3000® Index; 32.0% MSCI EAFE + Emerging Markets Index; and 8.7% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     12.10      12.07      9.18
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2055 Fund Composite Index
     12.70      12.49      9.54
       
S&P Target Date 2055 Index
     11.61      12.27      8.83
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 4,768,659,573
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 6,304,188
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $4,768,659,573  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     10%  
Total management fees paid for the year
     $    6,304,188  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000099414 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2055 Fund
Class Name Class R6 Shares
Trading Symbol TTIIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle Index 2055 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $11    0.10%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 11
Expense Ratio, Percent 0.10% [31]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2055 Fund returned 12.41% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2055 Fund Composite Index, which returned 12.70%.
 
•  The Fund’s Composite Index consisted of: 59.3% Russell 3000® Index; 32.0% MSCI EAFE + Emerging Markets Index; and 8.7% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     12.41      12.35      9.46
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2055 Fund Composite Index
     12.70      12.49      9.54
       
S&P Target Date 2055 Index
     11.61      12.27      8.83
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 4,768,659,573
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 6,304,188
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $4,768,659,573  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     10%  
Total management fees paid for the year
     $    6,304,188  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000099415 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2055 Fund
Class Name Premier Class Shares
Trading Symbol TTIPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle Index 2055 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $27    0.25%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.25% [32]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2055 Fund returned 12.22% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2055 Fund Composite Index, which returned 12.70%.
 
•  The Fund’s Composite Index consisted of: 59.3% Russell 3000® Index; 32.0% MSCI EAFE + Emerging Markets Index; and 8.7% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     12.22      12.19      9.30
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2055 Fund Composite Index
     12.70      12.49      9.54
       
S&P Target Date 2055 Index
     11.61      12.27      8.83
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 4,768,659,573
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 6,304,188
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $4,768,659,573  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     10%  
Total management fees paid for the year
     $    6,304,188  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162590 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2055 Fund
Class Name Class I Shares
Trading Symbol TTIHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle Index 2055 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $12    0.11%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 12
Expense Ratio, Percent 0.11% [33]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2055 Fund returned 12.37% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2055 Fund Composite Index, which returned 12.70%.
 
•  The Fund’s Composite Index consisted of: 59.3% Russell 3000® Index; 32.0% MSCI EAFE + Emerging Markets Index; and 8.7% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since Inception  
       
Class I Shares at NAV
     12.37      12.26      10.29
       
Russell 3000® Index
     13.12      15.34      13.00
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
       
Lifecycle Index 2055 Fund Composite Index
     12.70      12.49      10.47
       
S&P Target Date 2055 Index
     11.61      12.27      9.68
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 4,768,659,573
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 6,304,188
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 4,768,659,573  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     10%  
Total management fees paid for the year
   $ 6,304,188  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162593 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Aggressive Growth Fund
Class Name Class I Shares
Trading Symbol TSAHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifestyle Aggressive Growth Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $21    0.20%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 21
Expense Ratio, Percent 0.20% [34]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Aggressive Growth Fund returned 9.59% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Aggressive Growth Fund Composite Index, which returned 13.43%.
 
•  The Fund’s Composite Index consisted of: 65.0% Russell 3000® Index; and 35.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since
Inception
 
       
Class I Shares at NAV
     9.59      12.39      9.99
       
Russell 3000® Index
     13.12      15.34      13.00
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
       
Lifestyle Aggressive Growth Fund Composite Index
     13.43      13.74      11.15
       
Morningstar Aggressive Target Risk Index
     13.29      12.22      9.86
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 243,194,466
Holdings Count | Holding 13
Advisory Fees Paid, Amount $ 250,898
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 243,194,466
Total number of portfolio holdings
       13
Portfolio turnover (%)
       16%
Total management fees paid for the year
     $ 250,898
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107518 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Aggressive Growth Fund
Class Name Premier Class Shares
Trading Symbol TSAPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifestyle Aggressive Growth Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257-8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257-8787
Additional Information Website https://www.nuveen.com/en-us/mutual-funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $26    0.25%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [35]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Aggressive Growth Fund returned 9.59% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Aggressive Growth Fund Composite Index, which returned 13.43%.
 
•  The Fund’s Composite Index consisted of: 65.0% Russell 3000® Index; and 35.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1-Year      5-Year      10-Year  
       
Premier Class Shares at NAV
     9.59      12.32      9.00
       
Russell 3000® Index
     13.12 %      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Aggressive Growth Fund Composite Index
     13.43      13.74      10.13
       
Morningstar Aggressive Target Risk Index
     13.29      12.22      8.77
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month-end performance, go to https://www.nuveen.com/en-us/mutual-funds/prospectuses or call (800) 257-8787.
Net Assets $ 243,194,466
Holdings Count | Holding 13
Advisory Fees Paid, Amount $ 250,898
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 243,194,466  
Total number of portfolio holdings
     13  
Portfolio turnover (%)
     16%  
Total management fees paid for the year
   $ 250,898  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en-us/mutual-funds/prospectuses or upon request at (800) 257-8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en-us/mutual-funds/prospectuses or upon request at (800) 257-8787.
Updated Prospectus Phone Number (800) 257-8787
Updated Prospectus Web Address https://www.nuveen.com/en-us/mutual-funds/prospectuses
C000107519 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Aggressive Growth Fund
Class Name Class A Shares
Trading Symbol TSALX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class A Shares of the Nuveen Lifestyle Aggressive Growth Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257-8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257-8787
Additional Information Website https://www.nuveen.com/en-us/mutual-funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class A Shares
  $45    0.43%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.43% [36]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Aggressive Growth Fund returned 9.37% for Class A Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund significantly underperformed the Lifestyle Aggressive Growth Fund Composite Index, which returned 13.43%.
 
•  The Fund’s Composite Index consisted of: 65.0% Russell 3000® Index; and 35.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1-Year      5-Year      10-Year  
       
Class A Shares at NAV (excluding maximum sales charge)
     9.37      12.17      8.83
       
Class A at maximum sales charge (Offering Price)
     3.08      10.85      8.19
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Aggressive Growth Fund Composite Index
     13.43      13.74      10.13
       
Morningstar Aggressive Target Risk Index
     13.29      12.22      8.77
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257-8787.
Net Assets $ 243,194,466
Holdings Count | Holding 13
Advisory Fees Paid, Amount $ 250,898
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 243,194,466
Total number of portfolio holdings
       13
Portfolio turnover (%)
       16%
Total management fees paid for the year
     $ 250,898
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en-us/mutual-funds/prospectuses or upon request at (800) 257-8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en-us/mutual-funds/prospectuses or upon request at (800) 257-8787.
Updated Prospectus Phone Number (800) 257-8787
Updated Prospectus Web Address https://www.nuveen.com/en-us/mutual-funds/prospectuses
C000107520 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Aggressive Growth Fund
Class Name Retirement Class Shares
Trading Symbol TSARX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifestyle Aggressive Growth Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $37    0.35%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.35% [37]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Aggressive Growth Fund returned 9.49% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Aggressive Growth Fund Composite Index, which returned 13.43%.
 
•  The Fund’s Composite Index consisted of: 65.0% Russell 3000® Index; and 35.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     9.49      12.22      8.89
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Aggressive Growth Fund Composite Index
     13.43      13.74      10.13
       
Morningstar Aggressive Target Risk Index
     13.29      12.22      8.77
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 243,194,466
Holdings Count | Holding 13
Advisory Fees Paid, Amount $ 250,898
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 243,194,466
Total number of portfolio holdings
       13
Portfolio turnover (%)
       16%
Total management fees paid for the year
     $ 250,898
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107521 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Conservative Fund
Class Name Class R6 Shares
Trading Symbol TCSIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifestyle Conservative Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $10    0.10%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 10
Expense Ratio, Percent 0.10% [38]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Conservative Fund returned 7.50% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Conservative Fund Composite Index, which returned 8.78%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 20.0% Bloomberg U.S. 1‑3 Year Government/Credit Bond Index; and 14.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Core Plus Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     7.50      5.70      5.11
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Conservative Fund Composite Index
     8.78      5.46      5.19
       
Morningstar Moderately Conservative Target Risk Index
     9.01      4.95      4.98
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 308,475,297
Holdings Count | Holding 16
Advisory Fees Paid, Amount $ 311,490
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 308,475,297
Total number of portfolio holdings
       16
Portfolio turnover (%)
       13%
Total management fees paid for the year
     $ 311,490
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107522 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Conservative Fund
Class Name Premier Class Shares
Trading Symbol TLSPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifestyle Conservative Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $26    0.25%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [39]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Conservative Fund returned 7.39% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Conservative Fund Composite Index, which returned 8.78%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 20.0% Bloomberg U.S. 1‑3 Year Government/Credit Bond Index; and 14.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Core Plus Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     7.39      5.53      4.95
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Conservative Fund Composite Index
     8.78      5.46      5.19
       
Morningstar Moderately Conservative Target Risk Index
     9.01      4.95      4.98
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 308,475,297
Holdings Count | Holding 16
Advisory Fees Paid, Amount $ 311,490
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 308,475,297
Total number of portfolio holdings
       16
Portfolio turnover (%)
       13%
Total management fees paid for the year
     $ 311,490
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107523 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Conservative Fund
Class Name Class A Shares
Trading Symbol TSCLX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class A Shares of the Nuveen Lifestyle Conservative Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class A Shares
  $41    0.40%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.40% [40]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Conservative Fund returned 7.20% for Class A Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Conservative Fund Composite Index, which returned 8.78%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 20.0% Bloomberg U.S. 1‑3 Year Government/Credit Bond Index; and 14.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Core Plus Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class A Shares at NAV (excluding maximum sales charge)
     7.20      5.40      4.82
       
Class A at maximum sales charge (Offering Price)
     1.03      4.16      4.20
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Conservative Fund Composite Index
     8.78      5.46      5.19
       
Morningstar Moderately Conservative Target Risk Index
     9.01      4.95      4.98
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 308,475,297
Holdings Count | Holding 16
Advisory Fees Paid, Amount $ 311,490
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 308,475,297
Total number of portfolio holdings
       16
Portfolio turnover (%)
       13%
Total management fees paid for the year
     $ 311,490
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107524 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Conservative Fund
Class Name Retirement Class Shares
Trading Symbol TSCTX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifestyle Conservative Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $36    0.35%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.35% [41]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Conservative Fund returned 7.24% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Conservative Fund Composite Index, which returned 8.78%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 20.0% Bloomberg U.S. 1‑3 Year Government/Credit Bond Index; and 14.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Core Plus Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     7.24      5.44      4.86
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Conservative Fund Composite Index
     8.78      5.46      5.19
       
Morningstar Moderately Conservative Target Risk Index
     9.01      4.95      4.98
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 308,475,297
Holdings Count | Holding 16
Advisory Fees Paid, Amount $ 311,490
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 308,475,297
Total number of portfolio holdings
       16
Portfolio turnover (%)
       13%
Total management fees paid for the year
     $ 311,490
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162594 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Conservative Fund
Class Name Class I Shares
Trading Symbol TLSHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifestyle Conservative Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $19    0.18%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.18% [42]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Conservative Fund returned 7.43% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Conservative Fund Composite Index, which returned 8.78%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 20.0% Bloomberg U.S. 1‑3 Year Government/Credit Bond Index; and 14.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Core Plus Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since
Inception
 
       
Class I Shares at NAV
     7.43      5.59      5.48
       
Russell 3000® Index
     13.12      15.34      13.00
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
       
Lifestyle Conservative Fund Composite Index
     8.78      5.46      5.65
       
Morningstar Moderately Conservative Target Risk Index
     9.01      4.95      5.46
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 308,475,297
Holdings Count | Holding 16
Advisory Fees Paid, Amount $ 311,490
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 308,475,297
Total number of portfolio holdings
       16
Portfolio turnover (%)
       13%
Total management fees paid for the year
     $ 311,490
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107525 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Growth Fund
Class Name Premier Class Shares
Trading Symbol TSGPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifestyle Growth Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $26    0.25%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [43]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Growth Fund returned 8.77% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Growth Fund Composite Index, which returned 11.87%.
 
•  The Fund’s Composite Index consisted of: 52.0% Russell 3000® Index; 28.0% MSCI All Country World Index ex USA Investable Market Index; and 20.0% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
»   A position in the Nuveen Core Plus Bond Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     8.77      9.97      7.69
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Growth Fund Composite Index
     11.87      10.80      8.52
       
Morningstar Moderately Aggressive Target Risk Index
     11.96      10.07      7.72
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 304,177,350
Holdings Count | Holding 14
Advisory Fees Paid, Amount $ 309,006
Investment Company Portfolio Turnover 15.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 304,177,350
Total number of portfolio holdings
       14
Portfolio turnover (%)
       15%
Total management fees paid for the year
     $ 309,006
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107526 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Growth Fund
Class Name Class A Shares
Trading Symbol TSGLX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class A Shares of the Nuveen Lifestyle Growth Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class A Shares
  $43    0.41%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.41% [44]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Growth Fund returned 8.63% for Class A Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Growth Fund Composite Index, which returned 11.87%.
 
•  The Fund’s Composite Index consisted of: 52.0% Russell 3000® Index; 28.0% MSCI All Country World Index ex USA Investable Market Index; and 20.0% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
»   A position in the Nuveen Core Plus Bond Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class A Shares at NAV (excluding maximum sales charge)
     8.63      9.80      7.54
       
Class A at maximum sales charge (Offering Price)
     2.39      8.51      6.91
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Growth Fund Composite Index
     11.87      10.80      8.52
       
Morningstar Moderately Aggressive Target Risk Index
     11.96      10.07      7.72
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 304,177,350
Holdings Count | Holding 14
Advisory Fees Paid, Amount $ 309,006
Investment Company Portfolio Turnover 15.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 304,177,350
Total number of portfolio holdings
       14
Portfolio turnover (%)
       15%
Total management fees paid for the year
     $ 309,006
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107527 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Growth Fund
Class Name Retirement Class Shares
Trading Symbol TSGRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifestyle Growth Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $37    0.35%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.35% [45]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Growth Fund returned 8.71% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Growth Fund Composite Index, which returned 11.87%.
 
•  The Fund’s Composite Index consisted of: 52.0% Russell 3000® Index; 28.0% MSCI All Country World Index ex USA Investable Market Index; and 20.0% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
»   A position in the Nuveen Core Plus Bond Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     8.71      9.84      7.57
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Growth Fund Composite Index
     11.87      10.80      8.52
       
Morningstar Moderately Aggressive Target Risk Index
     11.96      10.07      7.72
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 304,177,350
Holdings Count | Holding 14
Advisory Fees Paid, Amount $ 309,006
Investment Company Portfolio Turnover 15.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 304,177,350
Total number of portfolio holdings
       14
Portfolio turnover (%)
       15%
Total management fees paid for the year
     $ 309,006
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107528 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Growth Fund
Class Name Class R6 Shares
Trading Symbol TSGGX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifestyle Growth Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $10    0.10%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 10
Expense Ratio, Percent 0.10% [46]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Growth Fund returned 8.98% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Growth Fund Composite Index, which returned 11.87%.
 
•  The Fund’s Composite Index consisted of: 52.0% Russell 3000® Index; 28.0% MSCI All Country World Index ex USA Investable Market Index; and 20.0% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
»   A position in the Nuveen Core Plus Bond Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     8.98      10.12      7.85
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Growth Fund Composite Index
     11.87      10.80      8.52
       
Morningstar Moderately Aggressive Target Risk Index
     11.96      10.07      7.72
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 304,177,350
Holdings Count | Holding 14
Advisory Fees Paid, Amount $ 309,006
Investment Company Portfolio Turnover 15.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 304,177,350
Total number of portfolio holdings
       14
Portfolio turnover (%)
       15%
Total management fees paid for the year
     $ 309,006
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162595 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Growth Fund
Class Name Class I Shares
Trading Symbol TSGHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifestyle Growth Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a  
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $18    0.17%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 18
Expense Ratio, Percent 0.17% [47]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Growth Fund returned 8.94% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Growth Fund Composite Index, which returned 11.87%.
 
•  The Fund’s Composite Index consisted of: 52.0% Russell 3000® Index; 28.0% MSCI All Country World Index ex USA Investable Market Index; and 20.0% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
»   A position in the Nuveen Core Plus Bond Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since
Inception
 
       
Class I Shares at NAV
     8.94      10.03      8.53
       
Russell 3000® Index
     13.12      15.34      13.00
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
       
Lifestyle Growth Fund Composite Index
     11.87      10.80      9.35
       
Morningstar Moderately Aggressive Target Risk Index
     11.96      10.07      8.66
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 304,177,350
Holdings Count | Holding 14
Advisory Fees Paid, Amount $ 309,006
Investment Company Portfolio Turnover 15.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 304,177,350
Total number of portfolio holdings
       14
Portfolio turnover (%)
       15%
Total management fees paid for the year
     $ 309,006
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107529 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Income Fund
Class Name Class R6 Shares
Trading Symbol TSITX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifestyle Income Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $10    0.10%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 10
Expense Ratio, Percent 0.10% [48]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Income Fund returned 6.84% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Income Fund Composite Index, which returned 7.26%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 40.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; 13.0% Russell 3000® Index; and 7.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   Positions in the Nuveen Core Plus Bond Fund and the Nuveen Core Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1-Year      5-Year      10-Year  
       
Class R6 Shares at NAV
     6.84      3.63      3.67
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Income Fund Composite Index
     7.26      3.02      3.47
       
Morningstar Conservative Target Risk Index
     7.35      2.11      3.16
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 75,506,081
Holdings Count | Holding 16
Advisory Fees Paid, Amount $ 75,659
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 75,506,081
Total number of portfolio holdings
       16
Portfolio turnover (%)
       16%
Total management fees paid for the year
     $ 75,659
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107530 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Income Fund
Class Name Premier Class Shares
Trading Symbol TSIPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifestyle Income Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $26    0.25%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [49]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Income Fund returned 6.72% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Income Fund Composite Index, which returned 7.26%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 40.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; 13.0% Russell 3000® Index; and 7.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   Positions in the Nuveen Core Plus Bond Fund and the Nuveen Core Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     6.72      3.49      3.52
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Income Fund Composite Index
     7.26      3.02      3.47
       
Morningstar Conservative Target Risk Index
     7.35      2.11      3.16
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 75,506,081
Holdings Count | Holding 16
Advisory Fees Paid, Amount $ 75,659
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 75,506,081
Total number of portfolio holdings
       16
Portfolio turnover (%)
       16%
Total management fees paid for the year
     $ 75,659
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162597 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Moderate Fund
Class Name Class I Shares
Trading Symbol TSMHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifestyle Moderate Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $19    0.18%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.18% [50]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Moderate Fund returned 8.13% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Moderate Fund Composite Index, which returned 10.29%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 39.0% Russell 3000® Index; and 21.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Core Plus Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since
Inception
 
       
Class I Shares at NAV
     8.13      7.63      7.04
       
Russell 3000® Index
     13.12      15.34      13.00
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
       
Lifestyle Moderate Fund Composite Index
     10.29      7.85      7.49
       
Morningstar Moderate Target Risk Index
     10.52      7.42      7.04
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 557,266,562
Holdings Count | Holding 14
Advisory Fees Paid, Amount $ 568,729
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 557,266,562
Total number of portfolio holdings
       14
Portfolio turnover (%)
       14%
Total management fees paid for the year
     $ 568,729
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107531 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Income Fund
Class Name Class A Shares
Trading Symbol TSILX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class A Shares of the Nuveen Lifestyle Income Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class A Shares
  $41    0.40%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.40% [51]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Income Fund returned 6.52% for Class A Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Income Fund Composite Index, which returned 7.26%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 40.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; 13.0% Russell 3000® Index; and 7.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   Positions in the Nuveen Core Plus Bond Fund and the Nuveen Core Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class A Shares at NAV (excluding maximum sales charge)
     6.52      3.35      3.38
       
Class A at maximum sales charge (Offering Price)
     0.38      2.14      2.77
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Income Fund Composite Index
     7.26      3.02      3.47
       
Morningstar Conservative Target Risk Index
     7.35      2.11      3.16
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 75,506,081
Holdings Count | Holding 16
Advisory Fees Paid, Amount $ 75,659
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 75,506,081
Total number of portfolio holdings
       16
Portfolio turnover (%)
       16%
Total management fees paid for the year
     $ 75,659
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107532 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Income Fund
Class Name Retirement Class Shares
Trading Symbol TLSRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifestyle Income Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $36    0.35%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.35% [52]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Income Fund returned 6.56% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Income Fund Composite Index, which returned 7.26%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 40.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; 13.0% Russell 3000® Index; and 7.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   Positions in the Nuveen Core Plus Bond Fund and the Nuveen Core Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     6.56      3.37      3.41
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Income Fund Composite Index
     7.26      3.02      3.47
       
Morningstar Conservative Target Risk Index
     7.35      2.11      3.16
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 75,506,081
Holdings Count | Holding 16
Advisory Fees Paid, Amount $ 75,659
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 75,506,081
Total number of portfolio holdings
       16
Portfolio turnover (%)
       16%
Total management fees paid for the year
     $ 75,659
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162596 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Income Fund
Class Name Class I Shares
Trading Symbol TSIHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifestyle Income Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $21    0.20%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 21
Expense Ratio, Percent 0.20% [53]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Income Fund returned 6.67% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Income Fund Composite Index, which returned 7.26%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 40.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; 13.0% Russell 3000® Index; and 7.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   Positions in the Nuveen Core Plus Bond Fund and the Nuveen Core Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since
Inception
 
       
Class I Shares at NAV
     6.67      3.56      3.91
       
Russell 3000® Index
     13.12      15.34      13.00
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
       
Lifestyle Income Fund Composite Index
     7.26      3.02      3.74
       
Morningstar Conservative Target Risk Index
     7.35      2.11      3.47
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 75,506,081
Holdings Count | Holding 16
Advisory Fees Paid, Amount $ 75,659
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 75,506,081
Total number of portfolio holdings
       16
Portfolio turnover (%)
       16%
Total management fees paid for the year
     $ 75,659
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107533 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Moderate Fund
Class Name Class R6 Shares
Trading Symbol TSIMX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifestyle Moderate Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $10    0.10%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 10
Expense Ratio, Percent 0.10% [54]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Moderate Fund returned 8.21% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Moderate Fund Composite Index, which returned 10.29%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 39.0% Russell 3000® Index; and 21.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Core Plus Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     8.21      7.73      6.51
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Moderate Fund Composite Index
     10.29      7.85      6.85
       
Morningstar Moderate Target Risk Index
     10.52      7.42      6.34
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 557,266,562
Holdings Count | Holding 14
Advisory Fees Paid, Amount $ 568,729
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 557,266,562
Total number of portfolio holdings
       14
Portfolio turnover (%)
       14%
Total management fees paid for the year
     $ 568,729
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107534 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Moderate Fund
Class Name Premier Class Shares
Trading Symbol TSMPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifestyle Moderate Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $26    0.25%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [55]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Moderate Fund returned 8.07% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Moderate Fund Composite Index, which returned 10.29%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 39.0% Russell 3000® Index; and 21.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Core Plus Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     8.07      7.57      6.34
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Moderate Fund Composite Index
     10.29      7.85      6.85
       
Morningstar Moderate Target Risk Index
     10.52      7.42      6.34
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 557,266,562
Holdings Count | Holding 14
Advisory Fees Paid, Amount $ 568,729
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 557,266,562  
Total number of portfolio holdings
     14  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
   $ 568,729  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107535 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Moderate Fund
Class Name Class A Shares
Trading Symbol TSMLX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class A Shares of the Nuveen Lifestyle Moderate Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class A Shares
  $43    0.41%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.41% [56]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Moderate Fund returned 7.90% for Class A Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Moderate Fund Composite Index, which returned 10.29%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 39.0% Russell 3000® Index; and 21.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Core Plus Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class A Shares at NAV (excluding maximum sales charge)
     7.90      7.42      6.21
       
Class A at maximum sales charge (Offering Price)
     1.70      6.15      5.58
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifestyle Moderate Fund Composite Index
     10.29      7.85      6.85
       
Morningstar Moderate Target Risk Index
     10.52      7.42      6.34
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 557,266,562
Holdings Count | Holding 14
Advisory Fees Paid, Amount $ 568,729
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 557,266,562
Total number of portfolio holdings
       14
Portfolio turnover (%)
       14%
Total management fees paid for the year
     $ 568,729
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000107536 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifestyle Moderate Fund
Class Name Retirement Class Shares
Trading Symbol TSMTX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifestyle Moderate Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $36    0.35%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.35% [57]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifestyle Moderate Fund returned 7.95% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifestyle Moderate Fund Composite Index, which returned 10.29%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 39.0% Russell 3000® Index; and 21.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Core Plus Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Retirement Class Shares at NAV
     7.95      7.46      6.23
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifestyle Moderate Fund Composite Index
     10.29      7.85      6.85
Morningstar Moderate Target Risk Index
     10.52      7.42      6.34
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 557,266,562
Holdings Count | Holding 14
Advisory Fees Paid, Amount $ 568,729
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 557,266,562
Total number of portfolio holdings
       14
Portfolio turnover (%)
       14%
Total management fees paid for the year
     $ 568,729
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000145612 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2060 Fund
Class Name Class R6 Shares
Trading Symbol TLXNX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle 2060 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $26    0.25%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [58]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2060 Fund returned 9.59% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2060 Fund Composite Index, which returned 12.86%.
 
•  The Fund’s Composite Index consisted of: 60.1% Russell 3000® Index; 32.4% MSCI All Country World Index ex USA Investable Market Index; and 7.5% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     9.59      11.92      8.93
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2060 Fund Composite Index
     12.86      12.76      9.69
       
S&P Target Date 2060 Index
     11.58      12.25      8.88
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 851,122,197
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 3,347,998
Investment Company Portfolio Turnover 17.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 851,122,197  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     17%  
Total management fees paid for the year
   $ 3,347,998  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000145613 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2060 Fund
Class Name Premier Class Shares
Trading Symbol TLXPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle 2060 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Premier Class Shares
  $42    0.40%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.40% [59]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2060 Fund returned 9.40% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2060 Fund Composite Index, which returned 12.86%.
 
•  The Fund’s Composite Index consisted of: 60.1% Russell 3000® Index; 32.4% MSCI All Country World Index ex USA Investable Market Index; and 7.5% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Premier Class Shares at NAV
     9.40      11.73      8.77
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle 2060 Fund Composite Index
     12.86      12.76      9.69
S&P Target Date 2060 Index
     11.58      12.25      8.88
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 851,122,197
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 3,347,998
Investment Company Portfolio Turnover 17.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 851,122,197  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     17%  
Total management fees paid for the year
   $ 3,347,998  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en-us/mutual-funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en-us/mutual-funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en-us/mutual-funds/prospectuses
C000145614 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2060 Fund
Class Name Retirement Class Shares
Trading Symbol TLXRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle 2060 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Retirement Class Shares
  $52    0.50%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
 
 
Expenses Paid, Amount $ 52
Expense Ratio, Percent 0.50% [60]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2060 Fund returned 9.31% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2060 Fund Composite Index, which returned 12.86%.
 
•  The Fund’s Composite Index consisted of: 60.1% Russell 3000® Index; 32.4% MSCI All Country World Index ex USA Investable Market Index; and 7.5% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Retirement Class Shares at NAV
     9.31      11.63      8.66
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle 2060 Fund Composite Index
     12.86      12.76      9.69
S&P Target Date 2060 Index
     11.58      12.25      8.88
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 851,122,197
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 3,347,998
Investment Company Portfolio Turnover 17.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 851,122,197  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     17%  
Total management fees paid for the year
   $ 3,347,998  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162601 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2060 Fund
Class Name Class I Shares
Trading Symbol TLXHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle 2060 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
Class I Shares
  $31    0.30%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.30% [61]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2060 Fund returned 9.54% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2060 Fund Composite Index, which returned 12.86%.
 
•  The Fund’s Composite Index consisted of: 60.1% Russell 3000® Index; 32.4% MSCI All Country World Index ex USA Investable Market Index; and 7.5% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      Since Inception  
Class I Shares at NAV
     9.54      11.83      9.75
Russell 3000® Index
     13.12      15.34      13.00
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
Lifecycle 2060 Fund Composite Index
     12.86      12.76      10.64
S&P Target Date 2060 Index
     11.58      12.25      9.74
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 851,122,197
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 3,347,998
Investment Company Portfolio Turnover 17.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 851,122,197  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     17%  
Total management fees paid for the year
   $ 3,347,998  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000145615 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2060 Fund
Class Name Retirement Class Shares
Trading Symbol TVITX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle Index 2060 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $37    0.35%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.35% [62]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2060 Fund returned 12.18% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2060 Fund Composite Index, which returned 12.79%.
 
•  The Fund’s Composite Index consisted of: 60.1% Russell 3000® Index; 32.4% MSCI EAFE + Emerging Markets Index; and 7.5% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     12.18      12.24      9.31
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2060 Fund Composite Index
     12.79      12.67      9.66
       
S&P Target Date 2060 Index
     11.58      12.25      8.88
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 2,790,148,930
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 3,584,265
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $2,790,148,930  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     10%  
Total management fees paid for the year
     $    3,584,265  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000145616 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2060 Fund
Class Name Class R6 Shares
Trading Symbol TVIIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle Index 2060 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $11    0.10%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 11
Expense Ratio, Percent 0.10% [63]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2060 Fund returned 12.48% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2060 Fund Composite Index, which returned 12.79%.
 
•  The Fund’s Composite Index consisted of: 60.1% Russell 3000® Index; 32.4% MSCI EAFE + Emerging Markets Index; and 7.5% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     12.48      12.52      9.58
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2060 Fund Composite Index
     12.79      12.67      9.66
       
S&P Target Date 2060 Index
     11.58      12.25      8.88
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 2,790,148,930
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 3,584,265
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $2,790,148,930  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     10%  
Total management fees paid for the year
     $    3,584,265  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000145617 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2060 Fund
Class Name Premier Class Shares
Trading Symbol TVIPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle Index 2060 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en-us/mutual-funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $27    0.25%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.25% [64]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2060 Fund returned 12.32% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2060 Fund Composite Index, which returned 12.79%.
 
•  The Fund’s Composite Index consisted of: 60.1% Russell 3000® Index; 32.4% MSCI EAFE + Emerging Markets Index; and 7.5% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     12.32      12.36      9.41
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2060 Fund Composite Index
     12.79      12.67      9.66
       
S&P Target Date 2060 Index
     11.58      12.25      8.88
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 2,790,148,930
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 3,584,265
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $2,790,148,930  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     10%  
Total management fees paid for the year
     $    3,584,265  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162602 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2060 Fund
Class Name Class I Shares
Trading Symbol TVIHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle Index 2060 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $12    0.11%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 12
Expense Ratio, Percent 0.11% [65]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2060 Fund returned 12.44% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2060 Fund Composite Index, which returned 12.79%.
 
•  The Fund’s Composite Index consisted of: 60.1% Russell 3000® Index; 32.4% MSCI EAFE + Emerging Markets Index; and 7.5% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since Inception  
       
Class I Shares at NAV
     12.44      12.42      10.41
       
Russell 3000® Index
     13.12      15.34      13.00
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
       
Lifecycle Index 2060 Fund Composite Index
     12.79      12.67      10.60
       
S&P Target Date 2060 Index
     11.58      12.25      9.74
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 2,790,148,930
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 3,584,265
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 2,790,148,930  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     10%  
Total management fees paid for the year
   $ 3,584,265  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000221702 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2065 Fund
Class Name Premier Class Shares
Trading Symbol TSFPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle 2065 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a
$10,000 investment
 
Costs paid as a percentage of
$10,000 investment*
Premier Class Shares
  $41   0.39%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
 
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.39% [66]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2065 Fund returned 9.41% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2065 Fund Composite Index, which returned 12.96%.
 
•  The Fund’s Composite Index consisted of: 61.0% Russell 3000® Index; 32.8% MSCI All Country World Index ex USA Investable Market Index; and 6.2% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      Since Inception  
Premier Class Shares at NAV
     9.41      10.22
Russell 3000® Index
     13.12      13.79
Bloomberg U.S. Aggregate Bond Index
     5.46      (1.23 )% 
Lifecycle 2065 Fund Composite Index
     12.96      11.38
S&P Target Date 2065+ Index
     11.78      11.18
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 139,898,313
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 478,665
Investment Company Portfolio Turnover 29.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 139,898,313  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     29%  
Total management fees paid for the year
   $ 478,665  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000221703 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2065 Fund
Class Name Class I Shares
Trading Symbol TSFHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle 2065 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
Class I Shares
  $27    0.26%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.26% [67]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2065 Fund returned 9.63% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2065 Fund Composite Index, which returned 12.96%.
 
•  The Fund’s Composite Index consisted of: 61.0% Russell 3000® Index; 32.8% MSCI All Country World Index ex USA Investable Market Index; and 6.2% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      Since Inception  
Class I Shares at NAV
     9.63      10.30
Russell 3000® Index
     13.12      13.79
Bloomberg U.S. Aggregate Bond Index
     5.46      (1.23 )% 
Lifecycle 2065 Fund Composite Index
     12.96      11.38
S&P Target Date 2065+ Index
     11.78      11.18
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 139,898,313
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 478,665
Investment Company Portfolio Turnover 29.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 139,898,313  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     29%  
Total management fees paid for the year
   $ 478,665  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000221704 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2065 Fund
Class Name Class R6 Shares
Trading Symbol TSFTX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle 2065 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Class R6 Shares
  $25    0.24%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 25
Expense Ratio, Percent 0.24% [68]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2065 Fund returned 9.56% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2065 Fund Composite Index, which returned 12.96%.
 
•  The Fund’s Composite Index consisted of: 61.0% Russell 3000® Index; 32.8% MSCI All Country World Index ex USA Investable Market Index; and 6.2% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      Since Inception  
Class R6 Shares at NAV
     9.56      10.45
Russell 3000® Index
     13.12      13.79
Bloomberg U.S. Aggregate Bond Index
     5.46      (1.23 )% 
Lifecycle 2065 Fund Composite Index
     12.96      11.38
S&P Target Date 2065+ Index
     11.78      11.18
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 139,898,313
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 478,665
Investment Company Portfolio Turnover 29.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 139,898,313  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     29%  
Total management fees paid for the year
   $ 478,665  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000221705 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2065 Fund
Class Name Retirement Class Shares
Trading Symbol TSFRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle 2065 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $51    0.49%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 51
Expense Ratio, Percent 0.49% [69]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2065 Fund returned 9.35% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2065 Fund Composite Index, which returned 12.96%.
 
•  The Fund’s Composite Index consisted of: 61.0% Russell 3000® Index; 32.8% MSCI All Country World Index ex USA Investable Market Index; and 6.2% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
   
     1‑Year      Since Inception  
     
Retirement Class Shares at NAV
     9.35      10.23
     
Russell 3000® Index
     13.12      13.79
     
Bloomberg U.S. Aggregate Bond Index
     5.46      (1.23 )% 
     
Lifecycle 2065 Fund Composite Index
     12.96      11.38
     
S&P Target Date 2065+ Index
     11.78      11.18
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 139,898,313
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 478,665
Investment Company Portfolio Turnover 29.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 139,898,313  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     29%  
Total management fees paid for the year
   $ 478,665  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000221706 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2065 Fund
Class Name Premier Class Shares
Trading Symbol TFIPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle Index 2065 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $27    0.25%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.25% [70]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2065 Fund returned 12.35% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2065 Fund Composite Index, which returned 12.89%.
 
•  The Fund’s Composite Index consisted of: 61.0% Russell 3000® Index; 32.8% MSCI EAFE + Emerging Markets Index; and 6.2% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
   
     1‑Year      Since Inception  
     
Premier Class Shares at NAV
     12.35      11.07
     
Russell 3000® Index
     13.12      13.79
     
Bloomberg U.S. Aggregate Bond Index
     5.46      (1.23 )% 
     
Lifecycle Index 2065 Fund Composite Index
     12.89      11.32
     
S&P Target Date 2065+ Index
     11.78      11.18
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 613,248,507
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 680,037
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 613,248,507  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     10%  
Total management fees paid for the year
   $ 680,037  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000221707 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2065 Fund
Class Name Retirement Class Shares
Trading Symbol TFIRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle Index 2065 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $37    0.35%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.35% [71]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2065 Fund returned 12.25% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2065 Fund Composite Index, which returned 12.89%.
 
•  The Fund’s Composite Index consisted of: 61.0% Russell 3000® Index; 32.8% MSCI EAFE + Emerging Markets Index; and 6.2% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
   
     1‑Year      Since Inception  
     
Retirement Class Shares at NAV
     12.25      10.89
     
Russell 3000® Index
     13.12      13.79
     
Bloomberg U.S. Aggregate Bond Index
     5.46      (1.23 )% 
     
Lifecycle Index 2065 Fund Composite Index
     12.89      11.32
     
S&P Target Date 2065+ Index
     11.78      11.18
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 613,248,507
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 680,037
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 613,248,507  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     10%  
Total management fees paid for the year
   $ 680,037  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000221708 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2065 Fund
Class Name Class I Shares
Trading Symbol TFIHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle Index 2065 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $12    0.11%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 12
Expense Ratio, Percent 0.11% [72]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2065 Fund returned 12.54% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2065 Fund Composite Index, which returned 12.89%.
 
•  The Fund’s Composite Index consisted of: 61.0% Russell 3000® Index; 32.8% MSCI EAFE + Emerging Markets Index; and 6.2% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
   
     1‑Year      Since Inception  
     
Class I Shares at NAV
     12.54      11.17
     
Russell 3000® Index
     13.12      13.79
     
Bloomberg U.S. Aggregate Bond Index
     5.46      (1.23 )% 
     
Lifecycle Index 2065 Fund Composite Index
     12.89      11.32
     
S&P Target Date 2065+ Index
     11.78      11.18
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 613,248,507
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 680,037
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 613,248,507  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     10%  
Total management fees paid for the year
   $ 680,037  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000221709 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2065 Fund
Class Name Class R6 Shares
Trading Symbol TFITX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle Index 2065 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $11    0.10%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 11
Expense Ratio, Percent 0.10% [73]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2065 Fund returned 12.54% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2065 Fund Composite Index, which returned 12.89%.
 
•  The Fund’s Composite Index consisted of: 61.0% Russell 3000® Index; 32.8% MSCI EAFE + Emerging Markets Index; and 6.2% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
   
     1‑Year      Since Inception  
     
Class R6 Shares at NAV
     12.54      11.22
     
Russell 3000® Index
     13.12      13.79
     
Bloomberg U.S. Aggregate Bond Index
     5.46      (1.23 )% 
     
Lifecycle Index 2065 Fund Composite Index
     12.89      11.32
     
S&P Target Date 2065+ Index
     11.78      11.18
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 613,248,507
Holdings Count | Holding 5
Advisory Fees Paid, Amount $ 680,037
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 613,248,507  
Total number of portfolio holdings
     5  
Portfolio turnover (%)
     10%  
Total management fees paid for the year
   $ 680,037  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000014647 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2040 Fund
Class Name Retirement Class Shares
Trading Symbol TCLOX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle 2040 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $53    0.51%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 53
Expense Ratio, Percent 0.51% [74]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2040 Fund returned 8.74% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2040 Fund Composite Index, which returned 11.78%.
 
•  The Fund’s Composite Index consisted of: 50.8% Russell 3000® Index; 27.3% MSCI All Country World Index ex USA Investable Market Index; and 21.9% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     8.74      10.11      7.82
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2040 Fund Composite Index
     11.78      11.01      8.72
       
S&P Target Date 2040 Index
     10.87      11.07      8.19
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 5,926,168,970
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 25,066,996
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $5,926,168,970  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
     $   25,066,996  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000047978 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2040 Fund
Class Name Class R6 Shares
Trading Symbol TCOIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle 2040 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $27    0.26%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.26% [75]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2040 Fund returned 9.03% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2040 Fund Composite Index, which returned 11.78%.
 
•  The Fund’s Composite Index consisted of: 50.8% Russell 3000® Index; 27.3% MSCI All Country World Index ex USA Investable Market Index; and 21.9% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     9.03      10.39      8.09
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2040 Fund Composite Index
     11.78      11.01      8.72
       
S&P Target Date 2040 Index
     10.87      11.07      8.19
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 5,926,168,970
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 25,066,996
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $5,926,168,970  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
     $   25,066,996  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079566 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2040 Fund
Class Name Premier Class Shares
Trading Symbol TCZPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle 2040 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Premier Class Shares
  $43    0.41%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.41% [76]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2040 Fund returned 8.80% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2040 Fund Composite Index, which returned 11.78%.
 
•  The Fund’s Composite Index consisted of: 50.8% Russell 3000® Index; 27.3% MSCI All Country World Index ex USA Investable Market Index; and 21.9% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Premier Class Shares at NAV
     8.80      10.23      7.92
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle 2040 Fund Composite Index
     11.78      11.01      8.72
S&P Target Date 2040 Index
     10.87      11.07      8.19
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 5,926,168,970
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 25,066,996
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 5,926,168,970  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
   $ 25,066,996  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162559 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2040 Fund
Class Name Class I Shares
Trading Symbol TCZHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle 2040 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $30    0.29%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 30
Expense Ratio, Percent 0.29% [77]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2040 Fund returned 8.93% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2040 Fund Composite Index, which returned 11.78%.
 
•  The Fund’s Composite Index consisted of: 50.8% Russell 3000® Index; 27.3% MSCI All Country World Index ex USA Investable Market Index; and 21.9% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since Inception  
       
Class I Shares at NAV
     8.93      10.31      8.86
       
Russell 3000® Index
     13.12      15.34      13.00
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
       
Lifecycle 2040 Fund Composite Index
     11.78      11.01      9.61
       
S&P Target Date 2040 Index
     10.87      11.07      8.97
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 5,926,168,970
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 25,066,996
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 5,926,168,970  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
   $ 25,066,996  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000014643 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2030 Fund
Class Name Retirement Class Shares
Trading Symbol TCLNX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle 2030 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $55    0.53%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 55
Expense Ratio, Percent 0.53% [78]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2030 Fund returned 7.89% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2030 Fund Composite Index, which returned 10.28%.
 
•  The Fund’s Composite Index consisted of: 37.8% Russell 3000® Index; 33.9% Bloomberg U.S. Aggregate Bond Index; 20.3% MSCI All Country World Index ex USA Investable Market Index; 4.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 4.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   A position in the Nuveen Real Property Fund LP.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     7.89      7.85      6.56
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2030 Fund Composite Index
     10.28      8.50      7.30
       
S&P Target Date 2030 Index
     9.51      8.53      6.87
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 4,365,167,433
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 18,369,937
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $4,365,167,433  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
     $   18,369,937  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000047976 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2030 Fund
Class Name Class R6 Shares
Trading Symbol TCRIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle 2030 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
Class R6 Shares
  $29    0.28%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
 
 
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.28% [79]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2030 Fund returned 8.16% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2030 Fund Composite Index, which returned 10.28%.
 
•  The Fund’s Composite Index consisted of: 37.8% Russell 3000® Index; 33.9% Bloomberg U.S. Aggregate Bond Index; 20.3% MSCI All Country World Index ex USA Investable Market Index; 4.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 4.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   A position in the Nuveen Real Property Fund LP.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     8.16      8.12      6.83
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2030 Fund Composite Index
     10.28      8.50      7.30
       
S&P Target Date 2030 Index
     9.51      8.53      6.87
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 4,365,167,433
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 18,369,937
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $4,365,167,433  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
     $   18,369,937  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079563 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2030 Fund
Class Name Premier Class Shares
Trading Symbol TCHPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle 2030 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
Premier Class Shares
  $45    0.43%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.43% [80]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2030 Fund returned 8.04% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2030 Fund Composite Index, which returned 10.28%.
 
•  The Fund’s Composite Index consisted of: 37.8% Russell 3000® Index; 33.9% Bloomberg U.S. Aggregate Bond Index; 20.3% MSCI All Country World Index ex USA Investable Market Index; 4.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 4.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   A position in the Nuveen Real Property Fund LP.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Premier Class Shares at NAV
     8.04      7.95      6.67
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle 2030 Fund Composite Index
     10.28      8.50      7.30
S&P Target Date 2030 Index
     9.51      8.53      6.87
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 4,365,167,433
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 18,369,937
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 4,365,167,433  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
   $ 18,369,937  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162556 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2030 Fund
Class Name Class I Shares
Trading Symbol TCHHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle 2030 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Class I Shares
  $31    0.30%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.30% [81]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2030 Fund returned 8.16% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2030 Fund Composite Index, which returned 10.28%.
 
•  The Fund’s Composite Index consisted of: 37.8% Russell 3000® Index; 33.9% Bloomberg U.S. Aggregate Bond Index; 20.3% MSCI All Country World Index ex USA Investable Market Index; 4.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 4.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   A position in the Nuveen Real Property Fund LP.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      Since Inception  
Class I Shares at NAV
     8.16      8.04      7.46
Russell 3000® Index
     13.12      15.34      13.00
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
Lifecycle 2030 Fund Composite Index
     10.28      8.50      8.03
S&P Target Date 2030 Index
     9.51      8.53      7.53
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 4,365,167,433
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 18,369,937
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 4,365,167,433  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
   $ 18,369,937  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en-us/mutual-funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en-us/mutual-funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en-us/mutual-funds/prospectuses
C000162557 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2035 Fund
Class Name Class I Shares
Trading Symbol TCYHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle 2035 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Class I Shares
  $31    0.30%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.30% [82]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2035 Fund returned 8.41% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2035 Fund Composite Index, which returned 10.91%.
 
•  The Fund’s Composite Index consisted of: 43.0% Russell 3000® Index; 29.8% Bloomberg U.S. Aggregate Bond Index; 23.2% MSCI All Country World Index ex USA Investable Market Index; 2.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 2.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
»   Holding the Nuveen Core Plus Bond Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      Since Inception  
Class I Shares at NAV
     8.41      9.09      8.12
Russell 3000® Index
     13.12      15.34      13.00
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
Lifecycle 2035 Fund Composite Index
     10.91      9.66      8.78
S&P Target Date 2035 Index
     10.24      9.95      8.34
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 4,835,172,704
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 20,275,659
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 4,835,172,704  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
   $ 20,275,659  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000014644 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2035 Fund
Class Name Retirement Class Shares
Trading Symbol TCLRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle 2035 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $54    0.52%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 54
Expense Ratio, Percent 0.52% [83]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2035 Fund returned 8.21% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2035 Fund Composite Index, which returned 10.91%.
 
•  The Fund’s Composite Index consisted of: 43.0% Russell 3000® Index; 29.8% Bloomberg U.S. Aggregate Bond Index; 23.2% MSCI All Country World Index ex USA Investable Market Index; 2.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 2.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
»   Holding the Nuveen Core Plus Bond Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     8.21      8.90      7.17
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2035 Fund Composite Index
     10.91      9.66      7.98
       
S&P Target Date 2035 Index
     10.24      9.95      7.61
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 4,835,172,704
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 20,275,659
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 4,835,172,704  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
   $ 20,275,659  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000047977 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2035 Fund
Class Name Class R6 Shares
Trading Symbol TCIIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle 2035 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $28    0.27%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
 
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.27% [84]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2035 Fund returned 8.51% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2035 Fund Composite Index, which returned 10.91%.
 
•  The Fund’s Composite Index consisted of: 43.0% Russell 3000® Index; 29.8% Bloomberg U.S. Aggregate Bond Index; 23.2% MSCI All Country World Index ex USA Investable Market Index; 2.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 2.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
»   Holding the Nuveen Core Plus Bond Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     8.51      9.19      7.45
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2035 Fund Composite Index
     10.91      9.66      7.98
       
S&P Target Date 2035 Index
     10.24      9.95      7.61
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 4,835,172,704
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 20,275,659
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $4,835,172,704  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
     $   20,275,659  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079564 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2035 Fund
Class Name Premier Class Shares
Trading Symbol TCYPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle 2035 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Premier Class Shares
  $44    0.42%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
 
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.42% [85]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2035 Fund returned 8.36% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2035 Fund Composite Index, which returned 10.91%.
 
•  The Fund’s Composite Index consisted of: 43.0% Russell 3000® Index; 29.8% Bloomberg U.S. Aggregate Bond Index; 23.2% MSCI All Country World Index ex USA Investable Market Index; 2.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 2.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
»   Holding the Nuveen Core Plus Bond Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Premier Class Shares at NAV
     8.36      9.03      7.28
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle 2035 Fund Composite Index
     10.91      9.66      7.98
S&P Target Date 2035 Index
     10.24      9.95      7.61
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 4,835,172,704
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 20,275,659
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 4,835,172,704  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
   $ 20,275,659  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000033271 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Managed Allocation Fund
Class Name Class A Shares
Trading Symbol TIMRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class A Shares of the Nuveen Managed Allocation Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class A Shares
  $26    0.25%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [86]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Managed Allocation Fund returned 8.05% for Class A Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Managed Allocation Fund Composite Index, which returned 10.29%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 39.0% Russell 3000® Index; and 21.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Core Plus Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class A Shares at NAV (excluding maximum sales charge)
     8.05      7.55      6.34
       
Class A at maximum sales charge (Offering Price)
     1.85      6.29      5.71
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Managed Allocation Fund Composite Index
     10.29      7.85      6.85
       
Morningstar Moderate Target Risk Index
     10.52      7.42      6.34
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 876,851,708
Holdings Count | Holding 14
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 876,851,708  
Total number of portfolio holdings
     14  
Portfolio turnover (%)
     11%  
Total management fees paid for the year
   $ 0  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000033272 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Managed Allocation Fund
Class Name Retirement Class Shares
Trading Symbol TITRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Managed Allocation Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $26    0.25%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [87]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Managed Allocation Fund returned 8.10% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Managed Allocation Fund Composite Index, which returned 10.29%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 39.0% Russell 3000® Index; and 21.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Core Plus Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     8.10      7.53      6.33
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Managed Allocation Fund Composite Index
     10.29      7.85      6.85
       
Morningstar Moderate Target Risk Index
     10.52      7.42      6.34
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 876,851,708
Holdings Count | Holding 14
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 876,851,708  
Total number of portfolio holdings
     14  
Portfolio turnover (%)
     11%  
Total management fees paid for the year
   $ 0  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000033273 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Managed Allocation Fund
Class Name Class R6 Shares
Trading Symbol TIMIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Managed Allocation Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $0    0.00%
* The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 0
Expense Ratio, Percent 0.00% [88]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Managed Allocation Fund returned 8.37% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Managed Allocation Fund Composite Index, which returned 10.29%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 39.0% Russell 3000® Index; and 21.0% MSCI All Country World Index ex USA Investable Market Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Core Plus Bond Fund.
 
»   Holding the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Core Equity Fund and the Nuveen Dividend Value Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     8.37      7.82      6.60
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Managed Allocation Fund Composite Index
     10.29      7.85      6.85
       
Morningstar Moderate Target Risk Index
     10.52      7.42      6.34
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 876,851,708
Holdings Count | Holding 14
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 876,851,708  
Total number of portfolio holdings
     14  
Portfolio turnover (%)
     11%  
Total management fees paid for the year
   $ 0  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000054994 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2050 Fund
Class Name Retirement Class Shares
Trading Symbol TLFRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle 2050 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
Retirement Class Shares
  $52    0.50%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 52
Expense Ratio, Percent 0.50% [89]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2050 Fund returned 9.15% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2050 Fund Composite Index, which returned 12.66%.
 
•  The Fund’s Composite Index consisted of: 58.5% Russell 3000® Index; 31.5% MSCI All Country World Index ex USA Investable Market Index; and 10.0% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Retirement Class Shares at NAV
     9.15      11.34      8.47
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle 2050 Fund Composite Index
     12.66      12.39      9.45
S&P Target Date 2050 Index
     11.41      12.12      8.75
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 3,502,564,733
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 14,671,786
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 3,502,564,733  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     16%  
Total management fees paid for the year
   $ 14,671,786  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079576 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2050 Fund
Class Name Premier Class Shares
Trading Symbol TCLPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle 2050 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en-us/mutual-funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Premier Class Shares
  $42    0.40%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.40% [90]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2050 Fund returned 9.27% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2050 Fund Composite Index, which returned 12.66%.
 
•  The Fund’s Composite Index consisted of: 58.5% Russell 3000® Index; 31.5% MSCI All Country World Index ex USA Investable Market Index; and 10.0% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Premier Class Shares at NAV
     9.27      11.44      8.58
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle 2050 Fund Composite Index
     12.66      12.39      9.45
S&P Target Date 2050 Index
     11.41      12.12      8.75
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 3,502,564,733
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 14,671,786
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 3,502,564,733  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     16%  
Total management fees paid for the year
   $ 14,671,786  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162575 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2050 Fund
Class Name Class I Shares
Trading Symbol TFTHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle 2050 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Class I Shares
  $28    0.27%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.27% [91]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2050 Fund returned 9.44% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2050 Fund Composite Index, which returned 12.66%.
 
•  The Fund’s Composite Index consisted of: 58.5% Russell 3000® Index; 31.5% MSCI All Country World Index ex USA Investable Market Index; and 10.0% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      Since Inception  
Class I Shares at NAV
     9.44      11.56      9.56
Russell 3000® Index
     13.12      15.34      13.00
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
Lifecycle 2050 Fund Composite Index
     12.66      12.39      10.38
S&P Target Date 2050 Index
     11.41      12.12      9.58
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 3,502,564,733
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 14,671,786
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 3,502,564,733  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     16%  
Total management fees paid for the year
   $ 14,671,786  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000054992 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2045 Fund
Class Name Retirement Class Shares
Trading Symbol TTFRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle 2045 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en-us/mutual-funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Retirement Class Shares
  $52    0.50%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
 
 
Expenses Paid, Amount $ 52
Expense Ratio, Percent 0.50% [92]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2045 Fund returned 9.06% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2045 Fund Composite Index, which returned 12.37%.
 
•  The Fund’s Composite Index consisted of: 56.0% Russell 3000® Index; 30.1% MSCI All Country World Index ex USA Investable Market Index; and 13.9% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Retirement Class Shares at NAV
     9.06      11.05      8.31
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle 2045 Fund Composite Index
     12.37      12.07      9.26
S&P Target Date 2045 Index
     11.33      11.80      8.56
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 4,362,593,840
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 18,305,071
Investment Company Portfolio Turnover 15.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 4,362,593,840  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     15%  
Total management fees paid for the year
   $ 18,305,071  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079575 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2045 Fund
Class Name Premier Class Shares
Trading Symbol TTFPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle 2045 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $42    0.40%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.40% [93]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2045 Fund returned 9.13% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2045 Fund Composite Index, which returned 12.37%.
 
•  The Fund’s Composite Index consisted of: 56.0% Russell 3000® Index; 30.1% MSCI All Country World Index ex USA Investable Market Index; and 13.9% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     9.13      11.16      8.41
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2045 Fund Composite Index
     12.37      12.07      9.26
       
S&P Target Date 2045 Index
     11.33      11.80      8.56
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 4,362,593,840
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 18,305,071
Investment Company Portfolio Turnover 15.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 4,362,593,840  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     15%  
Total management fees paid for the year
   $ 18,305,071  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162574 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2045 Fund
Class Name Class I Shares
Trading Symbol TTFHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle 2045 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Class I Shares
  $28    0.27%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.27% [94]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2045 Fund returned 9.28% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2045 Fund Composite Index, which returned 12.37%.
 
•  The Fund’s Composite Index consisted of: 56.0% Russell 3000® Index; 30.1% MSCI All Country World Index ex USA Investable Market Index; and 13.9% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      Since Inception  
Class I Shares at NAV
     9.28      11.25      9.39
Russell 3000® Index
     13.12      15.34      13.00
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
Lifecycle 2045 Fund Composite Index
     12.37      12.07      10.19
S&P Target Date 2045 Index
     11.33      11.80      9.37
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 4,362,593,840
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 18,305,071
Investment Company Portfolio Turnover 15.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 4,362,593,840  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     15%  
Total management fees paid for the year
   $ 18,305,071  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000054993 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2050 Fund
Class Name Class R6 Shares
Trading Symbol TFTIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle 2050 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en-us/mutual-funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Class R6 Shares
  $26    0.25%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
 
 
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [95]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2050 Fund returned 9.54% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2050 Fund Composite Index, which returned 12.66%.
 
•  The Fund’s Composite Index consisted of: 58.5% Russell 3000® Index; 31.5% MSCI All Country World Index ex USA Investable Market Index; and 10.0% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Class R6 Shares at NAV
     9.54      11.62      8.75
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle 2050 Fund Composite Index
     12.66      12.39      9.45
S&P Target Date 2050 Index
     11.41      12.12      8.75
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 3,502,564,733
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 14,671,786
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 3,502,564,733  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     16%  
Total management fees paid for the year
   $ 14,671,786  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000054991 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2045 Fund
Class Name Class R6 Shares
Trading Symbol TTFIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle 2045 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Class R6 Shares
  $26    0.25%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [96]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2045 Fund returned 9.32% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2045 Fund Composite Index, which returned 12.37%.
 
•  The Fund’s Composite Index consisted of: 56.0% Russell 3000® Index; 30.1% MSCI All Country World Index ex USA Investable Market Index; and 13.9% Bloomberg U.S. Aggregate Bond Index.
 
•  Top contributors to relative performance
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   Allocations to the Nuveen Quant Small/Mid Cap Equity Fund and the Nuveen Quant Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   Allocations to the Nuveen Dividend Value Fund and the Nuveen Core Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Class R6 Shares at NAV
     9.32      11.34      8.58
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle 2045 Fund Composite Index
     12.37      12.07      9.26
S&P Target Date 2045 Index
     11.33      11.80      8.56
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 4,362,593,840
Holdings Count | Holding 19
Advisory Fees Paid, Amount $ 18,305,071
Investment Company Portfolio Turnover 15.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 4,362,593,840  
Total number of portfolio holdings
     19  
Portfolio turnover (%)
     15%  
Total management fees paid for the year
   $ 18,305,071  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000054995 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Retirement Income Fund
Class Name Class A Shares
Trading Symbol TLRRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class A Shares of the Nuveen Lifecycle Retirement Income Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Class A Shares
  $55    0.53%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 55
Expense Ratio, Percent 0.53% [97]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Retirement Income Fund returned 7.11% for Class A Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Retirement Income Fund Composite Index, which returned 8.87%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI All Country World Index ex USA Investable Market Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Class A Shares at NAV (excluding maximum sales charge)
     7.11      5.16      4.78
Class A at maximum sales charge (Offering Price)
     0.94      3.92      4.16
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle Retirement Income Fund Composite Index
     8.87      5.59      5.28
S&P Target Date Retirement Income Index
     7.91      4.42      4.31
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 392,788,433
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 1,585,977
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 392,788,433  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
   $ 1,585,977  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000054996 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Retirement Income Fund
Class Name Class R6 Shares
Trading Symbol TLRIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle Retirement Income Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Class R6 Shares
  $28    0.27%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
 
 
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.27% [98]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Retirement Income Fund returned 7.37% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Retirement Income Fund Composite Index, which returned 8.87%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI All Country World Index ex USA Investable Market Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
 
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Class R6 Shares at NAV
     7.37      5.43      5.03
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle Retirement Income Fund Composite Index
     8.87      5.59      5.28
S&P Target Date Retirement Income Index
     7.91      4.42      4.31
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 392,788,433
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 1,585,977
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 392,788,433  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
   $ 1,585,977  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000054997 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Retirement Income Fund
Class Name Retirement Class Shares
Trading Symbol TLIRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle Retirement Income Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Retirement Class Shares
  $55    0.53%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
 
 
Expenses Paid, Amount $ 55
Expense Ratio, Percent 0.53% [99]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Retirement Income Fund returned 7.12% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Retirement Income Fund Composite Index, which returned 8.87%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI All Country World Index ex USA Investable Market Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
 
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Retirement Class Shares at NAV
     7.12      5.18      4.78
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle Retirement Income Fund Composite Index
     8.87      5.59      5.28
S&P Target Date Retirement Income Index
     7.91      4.42      4.31
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 392,788,433
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 1,585,977
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 392,788,433  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
   $ 1,585,977  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079577 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Retirement Income Fund
Class Name Premier Class Shares
Trading Symbol TPILX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle Retirement Income Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en-us/mutual-funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Premier Class Shares
  $45    0.43%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.43% [100]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Retirement Income Fund returned 7.21% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Retirement Income Fund Composite Index, which returned 8.87%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI All Country World Index ex USA Investable Market Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Premier Class Shares at NAV
     7.21      5.27      4.88
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle Retirement Income Fund Composite Index
     8.87      5.59      5.28
S&P Target Date Retirement Income Index
     7.91      4.42      4.31
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 392,788,433
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 1,585,977
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 392,788,433  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
   $ 1,585,977  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162576 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Retirement Income Fund
Class Name Class I Shares
Trading Symbol TLRHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle Retirement Income Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $34    0.33%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.33% [101]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Retirement Income Fund returned 7.31% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Retirement Income Fund Composite Index, which returned 8.87%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI All Country World Index ex USA Investable Market Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since Inception  
       
Class I Shares at NAV
     7.31      5.35      5.44
       
Russell 3000® Index
     13.12      15.34      13.00
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
       
Lifecycle Retirement Income Fund Composite Index
     8.87      5.59      5.77
       
S&P Target Date Retirement Income Index
     7.91      4.42      4.69
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 392,788,433
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 1,585,977
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 392,788,433  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
   $ 1,585,977  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162577 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2010 Fund
Class Name Class I Shares
Trading Symbol TLTHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle Index 2010 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $11    0.11%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 11
Expense Ratio, Percent 0.11% [102]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2010 Fund returned 8.35% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund performed in line with the Lifecycle Index 2010 Fund Composite Index, which returned 8.52%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 22.8% Russell 3000® Index; 12.3% MSCI EAFE + Emerging Markets Index; 14.9% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since Inception 
       
Class I Shares at NAV
     8.35      5.19     5.57%
       
Russell 3000® Index
     13.12      15.34    13.00%
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%      1.60%
       
Lifecycle Index 2010 Fund Composite Index
     8.52      5.35     5.72%
       
S&P Target Date 2010 Index
     8.09      5.14     5.23%
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 658,312,939
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 1,110,285
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $658,312,939  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     21%  
Total management fees paid for the year
     $  1,110,285  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079517 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2010 Fund
Class Name Class R6 Shares
Trading Symbol TLTIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle Index 2010 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $10    0.10%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 10
Expense Ratio, Percent 0.10% [103]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2010 Fund returned 8.34% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund performed in line with the Lifecycle Index 2010 Fund Composite Index, which returned 8.52%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 22.8% Russell 3000® Index; 12.3% MSCI EAFE + Emerging Markets Index; 14.9% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     8.34      5.26      5.15
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2010 Fund Composite Index
     8.52      5.35      5.23
       
S&P Target Date 2010 Index
     8.09      5.14      4.79
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 658,312,939
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 1,110,285
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 658,312,939
Total number of portfolio holdings
       7
Portfolio turnover (%)
       21%
Total management fees paid for the year
     $ 1,110,285
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079518 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2010 Fund
Class Name Premier Class Shares
Trading Symbol TLTPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle Index 2010 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $26    0.25%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [104]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2010 Fund returned 8.21% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2010 Fund Composite Index, which returned 8.52%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 22.8% Russell 3000® Index; 12.3% MSCI EAFE + Emerging Markets Index; 14.9% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     8.21      5.10      4.99
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2010 Fund Composite Index
     8.52      5.35      5.23
       
S&P Target Date 2010 Index
     8.09      5.14      4.79
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 658,312,939
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 1,110,285
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $ 658,312,939
Total number of portfolio holdings
       7
Portfolio turnover (%)
       21%
Total management fees paid for the year
     $ 1,110,285
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079519 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2010 Fund
Class Name Retirement Class Shares
Trading Symbol TLTRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle Index 2010 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $36    0.35%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.35% [105]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2010 Fund returned 8.09% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2010 Fund Composite Index, which returned 8.52%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 22.8% Russell 3000® Index; 12.3% MSCI EAFE + Emerging Markets Index; 14.9% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     8.09      5.00      4.89
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2010 Fund Composite Index
     8.52      5.35      5.23
       
S&P Target Date 2010 Index
     8.09      5.14      4.79
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 658,312,939
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 1,110,285
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 658,312,939  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     21%  
Total management fees paid for the year
   $ 1,110,285  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079530 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2020 Fund
Class Name Class R6 Shares
Trading Symbol TLWIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle Index 2020 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $10    0.10%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 10
Expense Ratio, Percent 0.10% [106]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2020 Fund returned 9.09% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund performed in line with the Lifecycle Index 2020 Fund Composite Index, which returned 9.25%.
 
•  The Fund’s Composite Index consisted of: 39.0% Bloomberg U.S. Aggregate Bond Index; 29.3% Russell 3000® Index; 15.7% MSCI EAFE + Emerging Markets Index; 8.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 8.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     9.09      6.44      5.98
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2020 Fund Composite Index
     9.25      6.54      6.06
       
S&P Target Date 2020 Index
     8.47      6.18      5.55
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 3,010,533,049
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 5,125,874
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 3,010,533,049  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     12%  
Total management fees paid for the year
   $ 5,125,874  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079531 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2020 Fund
Class Name Premier Class Shares
Trading Symbol TLWPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle Index 2020 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $26    0.25%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [107]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2020 Fund returned 8.86% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2020 Fund Composite Index, which returned 9.25%.
 
•  The Fund’s Composite Index consisted of: 39.0% Bloomberg U.S. Aggregate Bond Index; 29.3% Russell 3000® Index; 15.7% MSCI EAFE + Emerging Markets Index; 8.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 8.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     8.86      6.27      5.82
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2020 Fund Composite Index
     9.25      6.54      6.06
       
S&P Target Date 2020 Index
     8.47      6.18      5.55
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 3,010,533,049
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 5,125,874
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 3,010,533,049  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     12%  
Total management fees paid for the year
   $ 5,125,874  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079532 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2020 Fund
Class Name Retirement Class Shares
Trading Symbol TLWRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle Index 2020 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $37    0.35%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.35% [108]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2020 Fund returned 8.83% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2020 Fund Composite Index, which returned 9.25%.
 
•  The Fund’s Composite Index consisted of: 39.0% Bloomberg U.S. Aggregate Bond Index; 29.3% Russell 3000® Index; 15.7% MSCI EAFE + Emerging Markets Index; 8.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 8.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     8.83      6.18      5.72
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2020 Fund Composite Index
     9.25      6.54      6.06
       
S&P Target Date 2020 Index
     8.47      6.18      5.55
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 3,010,533,049
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 5,125,874
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 3,010,533,049  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     12%  
Total management fees paid for the year
   $ 5,125,874  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162581 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2020 Fund
Class Name Class I Shares
Trading Symbol TLWHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle Index 2020 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $13    0.12%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 13
Expense Ratio, Percent 0.12% [109]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2020 Fund returned 9.03% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund performed in line with the Lifecycle Index 2020 Fund Composite Index, which returned 9.25%.
 
•  The Fund’s Composite Index consisted of: 39.0% Bloomberg U.S. Aggregate Bond Index; 29.3% Russell 3000® Index; 15.7% MSCI EAFE + Emerging Markets Index; 8.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 8.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since Inception 
       
Class I Shares at NAV
     9.03      6.34     6.46%
       
Russell 3000® Index
     13.12      15.34    13.00%
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%      1.60%
       
Lifecycle Index 2020 Fund Composite Index
     9.25      6.54     6.65%
       
S&P Target Date 2020 Index
     8.47      6.18     6.08%
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 3,010,533,049
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 5,125,874
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $3,010,533,049  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     12%  
Total management fees paid for the year
     $    5,125,874  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079520 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index Retirement Income Fund
Class Name Class R6 Shares
Trading Symbol TRILX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle Index Retirement Income Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $10    0.10%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 10
Expense Ratio, Percent 0.10% [110]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index Retirement Income Fund returned 8.68% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund performed in line with the Lifecycle Index Retirement Income Fund Composite Index, which returned 8.84%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI EAFE + Emerging Markets Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     8.68      5.46      5.20
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index Retirement Income Fund Composite Index
     8.84      5.56      5.26
       
S&P Target Date Retirement Income Index
     7.91      4.42      4.31
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 772,632,516
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 1,238,918
Investment Company Portfolio Turnover 23.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 772,632,516  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     23%  
Total management fees paid for the year
   $ 1,238,918  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079521 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index Retirement Income Fund
Class Name Premier Class Shares
Trading Symbol TLIPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle Index Retirement Income Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $26    0.25%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [111]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index Retirement Income Fund returned 8.53% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index Retirement Income Fund Composite Index, which returned 8.84%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI EAFE + Emerging Markets Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     8.53      5.29      5.04
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index Retirement Income Fund Composite Index
     8.84      5.56      5.26
       
S&P Target Date Retirement Income Index
     7.91      4.42      4.31
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 772,632,516
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 1,238,918
Investment Company Portfolio Turnover 23.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 772,632,516  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     23%  
Total management fees paid for the year
   $ 1,238,918  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079522 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index Retirement Income Fund
Class Name Retirement Class Shares
Trading Symbol TRCIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle Index Retirement Income Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $36    0.35%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.35% [112]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index Retirement Income Fund returned 8.43% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index Retirement Income Fund Composite Index, which returned 8.84%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI EAFE + Emerging Markets Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     8.43      5.20      4.94
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index Retirement Income Fund Composite Index
     8.84      5.56      5.26
       
S&P Target Date Retirement Income Index
     7.91      4.42      4.31
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 772,632,516
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 1,238,918
Investment Company Portfolio Turnover 23.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 772,632,516  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     23%  
Total management fees paid for the year
   $ 1,238,918  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162578 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index Retirement Income Fund
Class Name Class I Shares
Trading Symbol TLIHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle Index Retirement Income Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en-us/mutual-funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $11    0.11%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 11
Expense Ratio, Percent 0.11% [113]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index Retirement Income Fund returned 8.59% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund performed in line with the Lifecycle Index Retirement Income Fund Composite Index, which returned 8.84%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI EAFE + Emerging Markets Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since Inception 
       
Class I Shares at NAV
     8.59      5.35     5.58%
       
Russell 3000® Index
     13.12      15.34    13.00%
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%      1.60%
       
Lifecycle Index Retirement Income Fund Composite Index
     8.84      5.56     5.75%
       
S&P Target Date Retirement Income Index
     7.91      4.42     4.69%
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 772,632,516
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 1,238,918
Investment Company Portfolio Turnover 23.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025) 
Fund net assets
     $772,632,516  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     23%  
Total management fees paid for the year
     $  1,238,918  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079527 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2015 Fund
Class Name Class R6 Shares
Trading Symbol TLFIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle Index 2015 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $10    0.10%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 10
Expense Ratio, Percent 0.10% [114]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2015 Fund returned 8.73% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund performed in line with the Lifecycle Index 2015 Fund Composite Index, which returned 8.89%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI EAFE + Emerging Markets Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     8.73      5.86      5.56
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2015 Fund Composite Index
     8.89      5.94      5.63
       
S&P Target Date 2015 Index
     8.07      5.67      5.17
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 1,002,489,875
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 1,768,166
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 1,002,489,875  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
   $ 1,768,166  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079528 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2015 Fund
Class Name Premier Class Shares
Trading Symbol TLFPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle Index 2015 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Premier Class Shares
  $26    0.25%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.25% [115]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2015 Fund returned 8.55% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2015 Fund Composite Index, which returned 8.89%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI EAFE + Emerging Markets Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Premier Class Shares at NAV
     8.55      5.68      5.39
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2015 Fund Composite Index
     8.89      5.94      5.63
       
S&P Target Date 2015 Index
     8.07      5.67      5.17
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 1,002,489,875
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 1,768,166
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 1,002,489,875  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
   $ 1,768,166  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079529 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2015 Fund
Class Name Retirement Class Shares
Trading Symbol TLGRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle Index 2015 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $36    0.35%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.35% [116]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2015 Fund returned 8.46% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle Index 2015 Fund Composite Index, which returned 8.89%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI EAFE + Emerging Markets Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     8.46      5.59      5.29
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle Index 2015 Fund Composite Index
     8.89      5.94      5.63
       
S&P Target Date 2015 Index
     8.07      5.67      5.17
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 1,002,489,875
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 1,768,166
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 1,002,489,875  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
   $ 1,768,166  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162580 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle Index 2015 Fund
Class Name Class I Shares
Trading Symbol TLFAX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle Index 2015 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $13    0.12%
* The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 13
Expense Ratio, Percent 0.12% [117]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle Index 2015 Fund returned 8.74% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund performed in line with the Lifecycle Index 2015 Fund Composite Index, which returned 8.89%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI EAFE + Emerging Markets Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to absolute performance
 
»   Underlying equity and fixed income funds advanced for the period. U.S. and international equity funds recorded double-digit gains and contributed most.
 
•  Top detractors from absolute performance
 
»   Management fees and other expenses incurred by the Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since Inception 
       
Class I Shares at NAV
     8.74      5.77     6.01%
       
Russell 3000® Index
     13.12      15.34    13.00%
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%      1.60%
       
Lifecycle Index 2015 Fund Composite Index
     8.89      5.94     6.16%
       
S&P Target Date 2015 Index
     8.07      5.67     5.66%
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 1,002,489,875
Holdings Count | Holding 7
Advisory Fees Paid, Amount $ 1,768,166
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $1,002,489,875  
Total number of portfolio holdings
     7  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
     $    1,768,166  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000014641 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2020 Fund
Class Name Retirement Class Shares
Trading Symbol TCLTX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle 2020 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $55    0.53%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 55
Expense Ratio, Percent 0.53% [118]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2020 Fund returned 7.36% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2020 Fund Composite Index, which returned 9.29%.
 
•  The Fund’s Composite Index consisted of: 39.0% Bloomberg U.S. Aggregate Bond Index; 29.3% Russell 3000® Index; 15.7% MSCI All Country World Index ex USA Investable Market Index; 8.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 8.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     7.36      6.05      5.48
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2020 Fund Composite Index
     9.29      6.58      6.08
       
S&P Target Date 2020 Index
     8.47      6.18      5.55
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 2,101,876,834
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 9,002,264
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $2,101,876,834  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     11%  
Total management fees paid for the year
     $    9,002,264  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000047974 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2020 Fund
Class Name Class R6 Shares
Trading Symbol TCWIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle 2020 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257-8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257-8787
Additional Information Website https://www.nuveen.com/en-us/mutual-funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Class R6 Shares
  $29    0.28%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.28% [119]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2020 Fund returned 7.66% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2020 Fund Composite Index, which returned 9.29%.
 
•  The Fund’s Composite Index consisted of: 39.0% Bloomberg U.S. Aggregate Bond Index; 29.3% Russell 3000® Index; 15.7% MSCI All Country World Index ex USA Investable Market Index; 8.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 8.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1-10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1-Year      5-Year      10-Year  
       
Class R6 Shares at NAV
     7.66      6.33      5.74
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2020 Fund Composite Index
     9.29      6.58      6.08
       
S&P Target Date 2020 Index
     8.47      6.18      5.55
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month-end performance, go to https://www.nuveen.com/en-us/mutual-funds/prospectuses or call (800) 257-8787.
Net Assets $ 2,101,876,834
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 9,002,264
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $2,101,876,834  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     11%  
Total management fees paid for the year
     $    9,002,264  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en-us/mutual-funds/prospectuses or upon request at (800) 257-8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en-us/mutual-funds/prospectuses or upon request at (800) 257-8787.
Updated Prospectus Phone Number (800) 257-8787
Updated Prospectus Web Address https://www.nuveen.com/en-us/mutual-funds/prospectuses
C000079561 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2020 Fund
Class Name Premier Class Shares
Trading Symbol TCWPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle 2020 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Premier Class Shares
  $45    0.43%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.43% [120]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2020 Fund returned 7.39% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2020 Fund Composite Index, which returned 9.29%.
 
•  The Fund’s Composite Index consisted of: 39.0% Bloomberg U.S. Aggregate Bond Index; 29.3% Russell 3000® Index; 15.7% MSCI All Country World Index ex USA Investable Market Index; 8.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 8.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Premier Class Shares at NAV
     7.39      6.14      5.58
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle 2020 Fund Composite Index
     9.29      6.58      6.08
S&P Target Date 2020 Index
     8.47      6.18      5.55
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 2,101,876,834
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 9,002,264
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 2,101,876,834  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     11%  
Total management fees paid for the year
   $ 9,002,264  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162554 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2020 Fund
Class Name Class I Shares
Trading Symbol TCWHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle 2020 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $34    0.33%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.33% [121]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2020 Fund returned 7.52% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2020 Fund Composite Index, which returned 9.29%.
 
•  The Fund’s Composite Index consisted of: 39.0% Bloomberg U.S. Aggregate Bond Index; 29.3% Russell 3000® Index; 15.7% MSCI All Country World Index ex USA Investable Market Index; 8.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 8.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since Inception  
       
Class I Shares at NAV
     7.52      6.22      6.24
       
Russell 3000® Index
     13.12      15.34      13.00
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
       
Lifecycle 2020 Fund Composite Index
     9.29      6.58      6.67
       
S&P Target Date 2020 Index
     8.47      6.18      6.08
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 2,101,876,834
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 9,002,264
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 2,101,876,834  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     11%  
Total management fees paid for the year
   $ 9,002,264  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162555 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2025 Fund
Class Name Class I Shares
Trading Symbol TCQHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle 2025 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Class I Shares
  $32    0.31%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 32
Expense Ratio, Percent 0.31% [122]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2025 Fund returned 7.74% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2025 Fund Composite Index, which returned 9.68%.
 
•  The Fund’s Composite Index consisted of: 37.9% Bloomberg U.S. Aggregate Bond Index; 32.6% Russell 3000® Index; 17.5% MSCI All Country World Index ex USA Investable Market Index; 6.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 6.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   An allocation to the Nuveen Quant Small/Mid Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      Since Inception  
Class I Shares at NAV
     7.74      7.06      6.81
Russell 3000® Index
     13.12      15.34      13.00
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
Lifecycle 2025 Fund Composite Index
     9.68      7.46      7.31
S&P Target Date 2025 Index
     8.82      7.23      6.75
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 3,367,492,187
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 14,518,478
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 3,367,492,187  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     12%  
Total management fees paid for the year
   $ 14,518,478  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000014642 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2025 Fund
Class Name Retirement Class Shares
Trading Symbol TCLFX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle 2025 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $55    0.53%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 55
Expense Ratio, Percent 0.53% [123]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2025 Fund returned 7.48% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2025 Fund Composite Index, which returned 9.68%.
 
•  The Fund’s Composite Index consisted of: 37.9% Bloomberg U.S. Aggregate Bond Index; 32.6% Russell 3000® Index; 17.5% MSCI All Country World Index ex USA Investable Market Index; 6.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 6.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   An allocation to the Nuveen Quant Small/Mid Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     7.48      6.85      5.98
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2025 Fund Composite Index
     9.68      7.46      6.65
       
S&P Target Date 2025 Index
     8.82      7.23      6.16
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 3,367,492,187
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 14,518,478
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $3,367,492,187  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     12%  
Total management fees paid for the year
     $   14,518,478  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000047975 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2025 Fund
Class Name Class R6 Shares
Trading Symbol TCYIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle 2025 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257-8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257-8787
Additional Information Website https://www.nuveen.com/en-us/mutual-funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $29    0.28%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.28% [124]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2025 Fund returned 7.73% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2025 Fund Composite Index, which returned 9.68%.
 
•  The Fund’s Composite Index consisted of: 37.9% Bloomberg U.S. Aggregate Bond Index; 32.6% Russell 3000® Index; 17.5% MSCI All Country World Index ex USA Investable Market Index; 6.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 6.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1-10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   An allocation to the Nuveen Quant Small/Mid Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1-Year      5-Year      10-Year  
       
Class R6 Shares at NAV
     7.73      7.12      6.24
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2025 Fund Composite Index
     9.68      7.46      6.65
       
S&P Target Date 2025 Index
     8.82      7.23      6.16
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month-end performance, go to https://www.nuveen.com/en-us/mutual-funds/prospectuses or call (800) 257‑8787.
Net Assets $ 3,367,492,187
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 14,518,478
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $3,367,492,187  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     12%  
Total management fees paid for the year
     $   14,518,478  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en-us/mutual-funds/prospectuses or upon request at (800) 257-8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en-us/mutual-funds/prospectuses or upon request at (800) 257-8787.
Updated Prospectus Phone Number (800) 257-8787
Updated Prospectus Web Address https://www.nuveen.com/en-us/mutual-funds/prospectuses
C000079562 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2025 Fund
Class Name Premier Class Shares
Trading Symbol TCQPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle 2025 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of $10,000
investment*
Premier Class Shares
  $45    0.43%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.43% [125]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2025 Fund returned 7.71% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2025 Fund Composite Index, which returned 9.68%.
 
•  The Fund’s Composite Index consisted of: 37.9% Bloomberg U.S. Aggregate Bond Index; 32.6% Russell 3000® Index; 17.5% MSCI All Country World Index ex USA Investable Market Index; 6.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 6.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
»   An allocation to the Nuveen Quant Small/Mid Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Premier Class Shares at NAV
     7.71      6.98      6.10
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle 2025 Fund Composite Index
     9.68      7.46      6.65
S&P Target Date 2025 Index
     8.82      7.23      6.16
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 3,367,492,187
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 14,518,478
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 3,367,492,187  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     12%  
Total management fees paid for the year
   $ 14,518,478  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000079560 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2015 Fund
Class Name Premier Class Shares
Trading Symbol TCFPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle 2015 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Premier Class Shares
  $45    0.43%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
 
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.43% [126]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2015 Fund returned 7.27% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2015 Fund Composite Index, which returned 8.92%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI All Country World Index ex USA Investable Market Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Premier Class Shares at NAV
     7.27      5.66      5.22
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle 2015 Fund Composite Index
     8.92      5.98      5.64
S&P Target Date 2015 Index
     8.07      5.67      5.17
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 982,124,540
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 4,137,942
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 982,124,540  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     11%  
Total management fees paid for the year
   $ 4,137,942  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000047973 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2015 Fund
Class Name Class R6 Shares
Trading Symbol TCNIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle 2015 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257-8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257-8787
Additional Information Website https://www.nuveen.com/en-us/mutual-funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $29    0.28%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.28% [127]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2015 Fund returned 7.40% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2015 Fund Composite Index, which returned 8.92%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI All Country World Index ex USA Investable Market Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1-10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Class R6 Shares at NAV
     7.40      5.81      5.38
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2015 Fund Composite Index
     8.92      5.98      5.64
       
S&P Target Date 2015 Index
     8.07      5.67      5.17
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month-end performance, go to https://www.nuveen.com/en-us/mutual-funds/prospectuses or call (800) 257-8787.
Net Assets $ 982,124,540
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 4,137,942
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $982,124,540  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     11%  
Total management fees paid for the year
     $  4,137,942  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en-us/mutual-funds/prospectuses or upon request at (800) 257-8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en-us/mutual-funds/prospectuses or upon request at (800) 257-8787.
Updated Prospectus Phone Number (800) 257-8787
Updated Prospectus Web Address https://www.nuveen.com/en-us/mutual-funds/prospectuses
C000162553 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2015 Fund
Class Name Class I Shares
Trading Symbol TCNHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle 2015 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Class I Shares
  $33    0.32%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.32% [128]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2015 Fund returned 7.40% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2015 Fund Composite Index, which returned 8.92%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI All Country World Index ex USA Investable Market Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      Since Inception  
Class I Shares at NAV
     7.40      5.73      5.84
Russell 3000® Index
     13.12      15.34      13.00
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
Lifecycle 2015 Fund Composite Index
     8.92      5.98      6.18
S&P Target Date 2015 Index
     8.07      5.67      5.66
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month-end performance, go to https://www.nuveen.com/en-us/mutual-funds/prospectuses or call (800) 257-8787.
Net Assets $ 982,124,540
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 4,137,942
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 982,124,540  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     11%  
Total management fees paid for the year
   $ 4,137,942  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000014640 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2015 Fund
Class Name Retirement Class Shares
Trading Symbol TCLIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle 2015 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $55    0.53%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 55
Expense Ratio, Percent 0.53% [129]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2015 Fund returned 7.21% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2015 Fund Composite Index, which returned 8.92%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 26.0% Russell 3000® Index; 14.0% MSCI All Country World Index ex USA Investable Market Index; 10.0% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   A position in the Nuveen Real Property Fund LP.
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     7.21      5.55      5.11
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2015 Fund Composite Index
     8.92      5.98      5.64
       
S&P Target Date 2015 Index
     8.07      5.67      5.17
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 982,124,540
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 4,137,942
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $982,124,540  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     11%  
Total management fees paid for the year
     $  4,137,942  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000014639 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2010 Fund
Class Name Retirement Class Shares
Trading Symbol TCLEX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Retirement Class Shares of the Nuveen Lifecycle 2010 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Retirement Class Shares
  $53    0.51%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
 
 
Expenses Paid, Amount $ 53
Expense Ratio, Percent 0.51% [130]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2010 Fund returned 7.14% for Retirement Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2010 Fund Composite Index, which returned 8.55%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 22.8% Russell 3000® Index; 12.3% MSCI All Country World Index ex USA Investable Market Index; 14.9% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   A position in the Nuveen Real Property Fund LP.
 
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      10‑Year  
       
Retirement Class Shares at NAV
     7.14      5.19      4.84
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2010 Fund Composite Index
     8.55      5.39      5.24
       
S&P Target Date 2010 Index
     8.09      5.14      4.79
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 688,742,970
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 2,913,688
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $688,742,970  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
     $  2,913,688  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000047972 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2010 Fund
Class Name Class R6 Shares
Trading Symbol TCTIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class R6 Shares of the Nuveen Lifecycle 2010 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257-8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257-8787
Additional Information Website https://www.nuveen.com/en-us/mutual-funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Class R6 Shares
  $27    0.26%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.26% [131]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2010 Fund returned 7.43% for Class R6 Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2010 Fund Composite Index, which returned 8.55%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 22.8% Russell 3000® Index; 12.3% MSCI All Country World Index ex USA Investable Market Index; 14.9% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1-10 Year Index.
 
•  Top contributors to relative performance
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   A position in the Nuveen Real Property Fund LP.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1-Year      5-Year      10-Year  
       
Class R6 Shares at NAV
     7.43      5.45      5.11
       
Russell 3000® Index
     13.12      15.34      12.21
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
       
Lifecycle 2010 Fund Composite Index
     8.55      5.39      5.24
       
S&P Target Date 2010 Index
     8.09      5.14      4.79
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month-end performance, go to https://www.nuveen.com/en-us/mutual-funds/prospectuses or call (800) 257-8787.
Net Assets $ 688,742,970
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 2,913,688
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
     $688,742,970  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
     $  2,913,688  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en-us/mutual-funds/prospectuses or upon request at (800) 257-8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en-us/mutual-funds/prospectuses or upon request at (800) 257-8787.
Updated Prospectus Phone Number (800) 257-8787
Updated Prospectus Web Address https://www.nuveen.com/en-us/mutual-funds/prospectuses
C000079559 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2010 Fund
Class Name Premier Class Shares
Trading Symbol TCTPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Premier Class Shares of the Nuveen Lifecycle 2010 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information at https://www.nuveen.com/en-us/mutual-funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en-us/mutual-funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
Premier Class Shares
  $42    0.41%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
 
 
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.41% [132]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2010 Fund returned 7.26% for Premier Class Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2010 Fund Composite Index, which returned 8.55%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 22.8% Russell 3000® Index; 12.3% MSCI All Country World Index ex USA Investable Market Index; 14.9% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   A position in the Nuveen Real Property Fund LP.
 
 
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     1‑Year      5‑Year      10‑Year  
Premier Class Shares at NAV
     7.26      5.31      4.96
Russell 3000® Index
     13.12      15.34      12.21
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.49
Lifecycle 2010 Fund Composite Index
     8.55      5.39      5.24
S&P Target Date 2010 Index
     8.09      5.14      4.79
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 688,742,970
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 2,913,688
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 688,742,970  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
   $ 2,913,688  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
C000162552 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Lifecycle 2010 Fund
Class Name Class I Shares
Trading Symbol TCLHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Class I Shares of the Nuveen Lifecycle 2010 Fund for the period of June 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information athttps://www.nuveen.com/en‑us/mutual‑funds/prospectuses. You can also request this information by contacting us at (800) 257‑8787.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 257‑8787
Additional Information Website https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the last year? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
 
Costs paid as a percentage of
$10,000 investment*
     
Class I Shares
  $33    0.32%
* The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.32% [133]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
•  The Nuveen Lifecycle 2010 Fund returned 7.37% for Class I Shares at net asset value (NAV) for the 12 months ended May 31, 2025. The Fund underperformed the Lifecycle 2010 Fund Composite Index, which returned 8.55%.
 
•  The Fund’s Composite Index consisted of: 40.0% Bloomberg U.S. Aggregate Bond Index; 22.8% Russell 3000® Index; 12.3% MSCI All Country World Index ex USA Investable Market Index; 14.9% Bloomberg U.S. 1–3 Year Government/Credit Bond Index; and 10.0% Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) 1‑10 Year Index.
 
•  Top contributors to relative performance
 
»   An allocation to the Nuveen Short Term Bond Fund.
 
»   Holding the Nuveen Core Plus Bond Fund.
 
»   A position in the Nuveen Quant International Small Cap Equity Fund.
 
•  Top detractors from relative performance
 
»   Holding the Nuveen International Opportunities Fund and the Nuveen International Equity Fund.
 
»   A position in the Nuveen Real Property Fund LP.
Performance Past Does Not Indicate Future [Text] Performance data shown represents past performance and does not predict or guarantee future results.
Line Graph [Table Text Block]
LOGO
Average Annual Return [Table Text Block]
Average Annual Total Returns
     
     1‑Year      5‑Year      Since Inception  
       
Class I Shares at NAV
     7.37      5.37      5.57
       
Russell 3000® Index
     13.12      15.34      13.00
       
Bloomberg U.S. Aggregate Bond Index
     5.46      (0.90 )%       1.60
       
Lifecycle 2010 Fund Composite Index
     8.55      5.39      5.74
       
S&P Target Date 2010 Index
     8.09      5.14      5.23
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund Shares.
Updated Performance Information Location [Text Block] For most recent month‑end performance, go to https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 688,742,970
Holdings Count | Holding 21
Advisory Fees Paid, Amount $ 2,913,688
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of May 31, 2025)
Fund net assets
   $ 688,742,970  
Total number of portfolio holdings
     21  
Portfolio turnover (%)
     13%  
Total management fees paid for the year
   $ 2,913,688  
Holdings [Text Block]
LOGO
(1) Affiliated investment companies (Underlying Funds), except for repurchase agreements.
Material Fund Change [Text Block]
How has the Fund changed?
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Summary of Change Legend [Text Block]
For more complete information, you may review the Fund’s next prospectus, which is expected to be available by October 1, 2025 at https://www.nuveen.com/en‑us/mutual‑funds/prospectuses or upon request at (800) 257‑8787.
Updated Prospectus Phone Number (800) 257‑8787
Updated Prospectus Web Address https://www.nuveen.com/en‑us/mutual‑funds/prospectuses
[1] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[2] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[3] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[4] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[5] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[6] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[7] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[8] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[9] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[10] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[11] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[12] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[13] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[14] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[15] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[16] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[17] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[18] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[19] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[20] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[21] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[22] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[23] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[24] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[25] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[26] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[27] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[28] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[29] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[30] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[31] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[32] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[33] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[34] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[35] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[36] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[37] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[38] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[39] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[40] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[41] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[42] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[43] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[44] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[45] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[46] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[47] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[48] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[49] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[50] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[51] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[52] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[53] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[54] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[55] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[56] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[57] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[58] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[59] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[60] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[61] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[62] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[63] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[64] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[65] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[66] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[67] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[68] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[69] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[70] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[71] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[72] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[73] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[74] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[75] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[76] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[77] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[78] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[79] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[80] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[81] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[82] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[83] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[84] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[85] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[86] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[87] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[88] The Fund’s ratios do not include the expenses or income of the Underlying Funds. Annualized for period less than one year.
[89] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[90] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[91] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[92] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[93] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[94] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[95] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[96] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[97] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[98] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[99] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[100] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[101] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[102] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[103] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[104] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[105] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[106] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[107] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[108] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[109] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[110] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[111] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[112] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[113] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[114] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[115] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[116] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[117] The Fund’s ratios include the expenses and exclude the income of the Underlying Funds. Annualized for period less than one year.
[118] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[119] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[120] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[121] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[122] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[123] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[124] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[125] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[126] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[127] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[128] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[129] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[130] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[131] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[132] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.
[133] The Fund’s ratios include the expenses of the Underlying Funds, excluding the expenses of the Dividend Growth, Dividend Value, Growth Opportunities ETF and the Nuveen Real Property Fund LP and exclude the income of the Underlying Funds. Annualized for period less than one year.