v3.25.4
Shareholder Report
12 Months Ended
Dec. 31, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name Nushares ETF Trust
Entity Central Index Key 0001635073
Entity Investment Company Type N-1A
Document Period End Date Dec. 31, 2025
C000175155 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen Short-Term REIT ETF
Class Name Nuveen Short-Term REIT ETF
Trading Symbol NURE
Security Exchange Name CboeBZX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Nuveen Short-Term REIT ETF for the period of January 1, 2025 to December 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/exchange‑traded‑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/exchange‑traded‑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*
     
Nuveen Short-Term REIT ETF
  $35    0.36%
* Annualized for period less than one year.
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.36% [1]
Factors Affecting Performance [Text Block]
How did the Fund perform last year? What affected the Fund’s performance?
Performance Highlights
 
The Nuveen Short-Term REIT ETF’s total return at net asset value (NAV) was ‑7.53% for the 12 months ended December 31, 2025. The Fund’s custom index, the Dow Jones U.S. Select Short-Term REIT Index, returned ‑7.25%.
 
The difference between the Fund’s total return at NAV and that of the custom index is attributable to management fees and other expenses incurred by the Fund that are not incurred by the custom index.
 
During the reporting period, the Fund’s custom index significantly underperformed the Fund’s base index, the Dow Jones U.S. Select REIT Index, which returned 3.67%.
 
Performance drivers between the Fund’s custom index and base index during the reporting period:
 
Top contributors to the custom index’s relative performance
 
An underweight to specialized REITs.
 
A lack of exposure to office REITs.
 
Top detractors from the custom index’s relative performance
 
An overweight allocation to residential REITs.
 
A lack of exposure to health care REITs.
 
An overweight allocation to hotel & resort REIT.
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
(12/19/16)
       
NAV
   (7.53)%    4.14%    4.86%
       
S&P 500® Index
   17.88%    14.42%    14.96%
       
Dow Jones U.S. Select REIT Index
   3.67%    6.65%    4.66%
       
Dow Jones U.S. Select Short-Term REIT Index
   (7.25)%    4.51%    5.22%
Performance Inception Date Dec. 19, 2016
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/exchange‑traded‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 31,008,241
Holdings Count | Holding 33
Advisory Fees Paid, Amount $ 140,548
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of December 31, 2025)
Fund net assets
     $31,008,241  
Total number of portfolio holdings
     33  
Portfolio turnover (%)
     14%  
Total management fees paid for the year
     $   140,548  
Holdings [Text Block]
LOGO
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 April 30, 2026 at https://www.nuveen.com/en‑us/exchange‑traded‑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 April 30, 2026 at https://www.nuveen.com/en‑us/exchange‑traded‑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/exchange‑traded‑funds/prospectuses
Accountant Change Statement [Text Block] On October 24, 2024, the Fund’s Board of Trustees engaged PricewaterhouseCoopers LLP (“PwC”) as the independent registered public accounting firm for the Fund and dismissed KPMG LLP (“KPMG”) as the independent registered public accounting firm for the Fund subject to the completion of the December 31, 2024 fiscal year end audit.
Accountant Change Date Oct. 24, 2024
Accountant Change Disagreements [Text Block]
Changes in independent registered public accounting firm
On October 24, 2024, the Fund’s Board of Trustees engaged PricewaterhouseCoopers LLP (“PwC”) as the independent registered public accounting firm for the Fund and dismissed KPMG LLP (“KPMG”) as the independent registered public accounting firm for the Fund subject to the completion of the December 31, 2024 fiscal year end audit. During the Fund’s fiscal years ended December 31, 2024 and December 31, 2023, and the subsequent interim period through February 28, 2025, there have been no disagreements with KPMG on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedures
C000264203 [Member]  
Shareholder Report [Line Items]  
Fund Name Nuveen International Aggregate Bond ETF
Class Name Nuveen International Aggregate Bond ETF
Trading Symbol NXUS
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Nuveen International Aggregate Bond ETF for the period of September 23, 2025 to December 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/exchange‑traded‑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/exchange‑traded‑funds/prospectuses
Expenses [Text Block]
What were the Fund costs for the period since inception? (based on a hypothetical $10,000 investment)
   
   
Cost of a 
$10,000 investment 
  Costs paid as a percentage of
$10,000 investment*
     
Nuveen International Aggregate Bond ETF
  $8    0.08%
* Annualized for period less than one year.
Expenses Paid, Amount $ 8
Expense Ratio, Percent 0.08% [2]
Factors Affecting Performance [Text Block]
How did the Fund perform since inception? What affected the Fund’s performance?
Performance Highlights
 
The Nuveen International Aggregate Bond ETF’s total return at net asset value (NAV) was 0.43% for the abbreviated annual reporting period from the Fund’s launch on September 23, 2025, through December 31, 2025. The Fund’s index, the Bloomberg Global Aggregate ex‑USD Index (Hedged) Index, returned 0.65%.
 
The difference between the Fund’s total return at NAV and that of the index was driven by a limited investable universe relative to the index and transaction costs incurred during the Fund’s ramp‑up period. Both factors are expected to normalize going forward.
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
 
     Since Inception
(9/23/25)
   
NAV
   0.43%
   
Bloomberg Global Aggregate Bond Index
   0.08%
   
Bloomberg Global Aggregate ex‑USD Index (Hedged)
   0.65%
Performance Inception Date Sep. 23, 2025
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/exchange‑traded‑funds/prospectuses or call (800) 257‑8787.
Net Assets $ 2,535,933,488
Holdings Count | Holding 2,792
Advisory Fees Paid, Amount $ 164,476
Investment Company Portfolio Turnover 2.00%
Additional Fund Statistics [Text Block]
Fund Statistics (as of December 31, 2025)
Fund net assets
     $2,535,933,488  
Total number of portfolio holdings
     2,792  
Portfolio turnover (%)
     2%  
Total management fees paid for the year
     $      164,476  
Holdings [Text Block]
 
 
LOGO
LOGO
LOGO
(1) The Fund uses credit quality ratings for its portfolio securities provided by Standard & Poor’s Group (“Standard & Poor’s”), Moody’s Investors Service, Inc. (“Moody’s”) and Fitch, Inc.(“Fitch”). If all three provide a rating for a security, the middle is used; if two of the three agencies rate a security, the lower rating is used; and if only one rating agency rates a security, that rating is used. AAA, AA, A, and BBB are investment grade ratings; BB, B, CCC/CC/C and D are below-investment grade ratings. Credit ratings are subject to change. Holdings designated N/R are not rated by Moody’s, S&P or Fitch.
Credit Ratings Selection [Text Block] The Fund uses credit quality ratings for its portfolio securities provided by Standard & Poor’s Group (“Standard & Poor’s”), Moody’s Investors Service, Inc. (“Moody’s”) and Fitch, Inc.(“Fitch”). If all three provide a rating for a security, the middle is used; if two of the three agencies rate a security, the lower rating is used; and if only one rating agency rates a security, that rating is used. AAA, AA, A, and BBB are investment grade ratings; BB, B, CCC/CC/C and D are below-investment grade ratings. Credit ratings are subject to change. Holdings designated N/R are not rated by Moody’s, S&P or Fitch.
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 April 30, 2026 at https://www.nuveen.com/en‑us/exchange‑traded‑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 April 30, 2026 at https://www.nuveen.com/en‑us/exchange‑traded‑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/exchange‑traded‑funds/prospectuses
[1] Annualized for period less than one year.
[2] Annualized for period less than one year.