v3.25.3
Shareholder Report
 12 Months Ended
Aug. 31, 2025
USD ($)
$ / shares
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name Putnam Target Date Funds
Entity Central Index Key 0001295293
Entity Investment Company Type N-1A
Document Period End Date Aug. 31, 2025
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage Maturity Fund
Class Name Class A
Trading Symbol POMGX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage Maturity Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class A1,2
$43
0.42%
[1],[2],[3]
Expenses Paid, Amount $ 43 [1],[2]
Expense Ratio, Percent 0.42% [1],[2]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class A shares of Putnam Retirement Advantage Maturity Fund returned 6.62%. The Fund compares its performance to the S&P Target Date To Retirement Income Index, which returned 7.00% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Global Fixed Income strategy
↑
High Yield Fixed Income strategy
↑
International High Dividend Equity strategy
Top detractors from performance:
↓
U.S. High Dividend Equity strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class A
6.62
4.06
4.41
Class A (with sales charge)
2.35
3.21
3.67
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
Russell 3000 Index
15.84
14.11
14.15
S&P Target Date To Retirement Income Index
7.00
4.25
4.64
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 41,010,267
Holdings Count | $ / shares 2
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 58.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$41,010,267
Total Number of Portfolio Holdings
2
Total Management Fee Paid
$0
Portfolio Turnover Rate
58%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [4],[5]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage Maturity Fund
Class Name Class C
Trading Symbol PLFGX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage Maturity Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class C1,2
$121
1.18%
[6],[7],[8]
Expenses Paid, Amount $ 121 [6],[7]
Expense Ratio, Percent 1.18% [6],[7]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class C shares of Putnam Retirement Advantage Maturity Fund returned 5.88%. The Fund compares its performance to the S&P Target Date To Retirement Income Index, which returned 7.00% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Global Fixed Income strategy
↑
High Yield Fixed Income strategy
↑
International High Dividend Equity strategy
Top detractors from performance:
↓
U.S. High Dividend Equity strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class C
5.88
3.30
3.65
Class C (with sales charge)
4.88
3.30
3.65
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
Russell 3000 Index
15.84
14.11
14.15
S&P Target Date To Retirement Income Index
7.00
4.25
4.64
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 41,010,267
Holdings Count | $ / shares 2
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 58.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$41,010,267
Total Number of Portfolio Holdings
2
Total Management Fee Paid
$0
Portfolio Turnover Rate
58%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [9],[10]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage Maturity Fund
Class Name Class R
Trading Symbol PAKYX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage Maturity Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R1,2
$85
0.82%
[11],[12],[13]
Expenses Paid, Amount $ 85 [11],[12]
Expense Ratio, Percent 0.82% [11],[12]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R shares of Putnam Retirement Advantage Maturity Fund returned 6.22%. The Fund compares its performance to the S&P Target Date To Retirement Income Index, which returned 7.00% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Global Fixed Income strategy
↑
High Yield Fixed Income strategy
↑
International High Dividend Equity strategy
Top detractors from performance:
↓
U.S. High Dividend Equity strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R
6.22
3.65
3.99
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
Russell 3000 Index
15.84
14.11
14.15
S&P Target Date To Retirement Income Index
7.00
4.25
4.64
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 41,010,267
Holdings Count | $ / shares 2
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 58.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$41,010,267
Total Number of Portfolio Holdings
2
Total Management Fee Paid
$0
Portfolio Turnover Rate
58%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [14],[15]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage Maturity Fund
Class Name Class R3
Trading Symbol PAHMX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage Maturity Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R31,2
$59
0.57%
[16],[17],[18]
Expenses Paid, Amount $ 59 [16],[17]
Expense Ratio, Percent 0.57% [16],[17]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R3 shares of Putnam Retirement Advantage Maturity Fund returned 6.47%. The Fund compares its performance to the S&P Target Date To Retirement Income Index, which returned 7.00% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Global Fixed Income strategy
↑
High Yield Fixed Income strategy
↑
International High Dividend Equity strategy
Top detractors from performance:
↓
U.S. High Dividend Equity strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R3
6.47
3.90
4.26
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
Russell 3000 Index
15.84
14.11
14.15
S&P Target Date To Retirement Income Index
7.00
4.25
4.64
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 41,010,267
Holdings Count | $ / shares 2
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 58.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$41,010,267
Total Number of Portfolio Holdings
2
Total Management Fee Paid
$0
Portfolio Turnover Rate
58%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [19],[20]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage Maturity Fund
Class Name Class R4
Trading Symbol PAHNX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage Maturity Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R41,2
$33
0.32%
[21],[22],[23]
Expenses Paid, Amount $ 33 [21],[22]
Expense Ratio, Percent 0.32% [21],[22]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R4 shares of Putnam Retirement Advantage Maturity Fund returned 6.70%. The Fund compares its performance to the S&P Target Date To Retirement Income Index, which returned 7.00% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Global Fixed Income strategy
↑
High Yield Fixed Income strategy
↑
International High Dividend Equity strategy
Top detractors from performance:
↓
U.S. High Dividend Equity strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R4
6.70
4.16
4.50
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
Russell 3000 Index
15.84
14.11
14.15
S&P Target Date To Retirement Income Index
7.00
4.25
4.64
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 41,010,267
Holdings Count | $ / shares 2
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 58.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$41,010,267
Total Number of Portfolio Holdings
2
Total Management Fee Paid
$0
Portfolio Turnover Rate
58%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [24],[25]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage Maturity Fund
Class Name Class R5
Trading Symbol PAHOX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage Maturity Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R51,2
$18
0.17%
[26],[27],[28]
Expenses Paid, Amount $ 18 [26],[27]
Expense Ratio, Percent 0.17% [26],[27]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R5 shares of Putnam Retirement Advantage Maturity Fund returned 6.91%. The Fund compares its performance to the S&P Target Date To Retirement Income Index, which returned 7.00% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Global Fixed Income strategy
↑
High Yield Fixed Income strategy
↑
International High Dividend Equity strategy
Top detractors from performance:
↓
U.S. High Dividend Equity strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R5
6.91
4.31
4.66
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
Russell 3000 Index
15.84
14.11
14.15
S&P Target Date To Retirement Income Index
7.00
4.25
4.64
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 41,010,267
Holdings Count | $ / shares 2
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 58.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$41,010,267
Total Number of Portfolio Holdings
2
Total Management Fee Paid
$0
Portfolio Turnover Rate
58%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [29],[30]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage Maturity Fund
Class Name Class R6
Trading Symbol PADLX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage Maturity Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R61,2
$7
0.07%
[31],[32],[33]
Expenses Paid, Amount $ 7 [31],[32]
Expense Ratio, Percent 0.07% [31],[32]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R6 shares of Putnam Retirement Advantage Maturity Fund returned 7.10%. The Fund compares its performance to the S&P Target Date To Retirement Income Index, which returned 7.00% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Global Fixed Income strategy
↑
High Yield Fixed Income strategy
↑
International High Dividend Equity strategy
Top detractors from performance:
↓
U.S. High Dividend Equity strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R6
7.10
4.44
4.79
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
Russell 3000 Index
15.84
14.11
14.15
S&P Target Date To Retirement Income Index
7.00
4.25
4.64
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 41,010,267
Holdings Count | $ / shares 2
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 58.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$41,010,267
Total Number of Portfolio Holdings
2
Total Management Fee Paid
$0
Portfolio Turnover Rate
58%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [34],[35]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage Maturity Fund
Class Name Class Y
Trading Symbol PAETX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage Maturity Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class Y1,2
$18
0.17%
[36],[37],[38]
Expenses Paid, Amount $ 18 [36],[37]
Expense Ratio, Percent 0.17% [36],[37]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class Y shares of Putnam Retirement Advantage Maturity Fund returned 6.90%. The Fund compares its performance to the S&P Target Date To Retirement Income Index, which returned 7.00% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Global Fixed Income strategy
↑
High Yield Fixed Income strategy
↑
International High Dividend Equity strategy
Top detractors from performance:
↓
U.S. High Dividend Equity strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class Y
6.90
4.31
4.66
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
Russell 3000 Index
15.84
14.11
14.15
S&P Target Date To Retirement Income Index
7.00
4.25
4.64
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 41,010,267
Holdings Count | $ / shares 2
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 58.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$41,010,267
Total Number of Portfolio Holdings
2
Total Management Fee Paid
$0
Portfolio Turnover Rate
58%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [39],[40]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2030 Fund
Class Name Class A
Trading Symbol PDLTX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2030 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class A1
$28
0.27%
[41],[42]
Expenses Paid, Amount $ 28 [41]
Expense Ratio, Percent 0.27% [41]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class A shares of Putnam Retirement Advantage 2030 Fund returned 7.84%. The Fund compares its performance to the S&P Target Date To 2030 Index, which returned 8.90% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Fundamental International Equity strategy
↑
Quantitative International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
↓
U.S. High Dividend Equity strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class A
7.84
6.84
6.98
Class A (with sales charge)
1.64
5.58
5.87
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2030 Index
8.90
7.23
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 38,846,788
Holdings Count | $ / shares 4
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$38,846,788
Total Number of Portfolio Holdings
4
Total Management Fee Paid
$0
Portfolio Turnover Rate
56%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [43],[44]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2030 Fund
Class Name Class C
Trading Symbol PDLKX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2030 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class C1
$107
1.03%
[45],[46]
Expenses Paid, Amount $ 107 [45]
Expense Ratio, Percent 1.03% [45]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class C shares of Putnam Retirement Advantage 2030 Fund returned 7.01%. The Fund compares its performance to the S&P Target Date To 2030 Index, which returned 8.90% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Fundamental International Equity strategy
↑
Quantitative International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
↓
U.S. High Dividend Equity strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class C
7.01
6.05
6.19
Class C (with sales charge)
6.01
6.05
6.19
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2030 Index
8.90
7.23
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 38,846,788
Holdings Count | $ / shares 4
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$38,846,788
Total Number of Portfolio Holdings
4
Total Management Fee Paid
$0
Portfolio Turnover Rate
56%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [47],[48]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2030 Fund
Class Name Class R
Trading Symbol PDKAX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2030 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R1
$69
0.67%
[49],[50]
Expenses Paid, Amount $ 69 [49]
Expense Ratio, Percent 0.67% [49]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R shares of Putnam Retirement Advantage 2030 Fund returned 7.42%. The Fund compares its performance to the S&P Target Date To 2030 Index, which returned 8.90% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Fundamental International Equity strategy
↑
Quantitative International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
↓
U.S. High Dividend Equity strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R
7.42
6.43
6.56
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2030 Index
8.90
7.23
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 38,846,788
Holdings Count | $ / shares 4
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$38,846,788
Total Number of Portfolio Holdings
4
Total Management Fee Paid
$0
Portfolio Turnover Rate
56%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [51],[52]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2030 Fund
Class Name Class R3
Trading Symbol PAFOX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2030 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R31
$44
0.42%
[53],[54]
Expenses Paid, Amount $ 44 [53]
Expense Ratio, Percent 0.42% [53]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R3 shares of Putnam Retirement Advantage 2030 Fund returned 7.67%. The Fund compares its performance to the S&P Target Date To 2030 Index, which returned 8.90% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Fundamental International Equity strategy
↑
Quantitative International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
↓
U.S. High Dividend Equity strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R3
7.67
6.69
6.83
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2030 Index
8.90
7.23
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 38,846,788
Holdings Count | $ / shares 4
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$38,846,788
Total Number of Portfolio Holdings
4
Total Management Fee Paid
$0
Portfolio Turnover Rate
56%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [55],[56]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2030 Fund
Class Name Class R4
Trading Symbol PAFQX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2030 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R41
$18
0.17%
[57],[58]
Expenses Paid, Amount $ 18 [57]
Expense Ratio, Percent 0.17% [57]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R4 shares of Putnam Retirement Advantage 2030 Fund returned 8.05%. The Fund compares its performance to the S&P Target Date To 2030 Index, which returned 8.90% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Fundamental International Equity strategy
↑
Quantitative International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
↓
U.S. High Dividend Equity strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R4
8.05
6.96
7.09
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2030 Index
8.90
7.23
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 38,846,788
Holdings Count | $ / shares 4
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$38,846,788
Total Number of Portfolio Holdings
4
Total Management Fee Paid
$0
Portfolio Turnover Rate
56%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [59],[60]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2030 Fund
Class Name Class R5
Trading Symbol PAFVX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2030 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R51
$2
0.02%
[61],[62]
Expenses Paid, Amount $ 2 [61]
Expense Ratio, Percent 0.02% [61]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R5 shares of Putnam Retirement Advantage 2030 Fund returned 8.17%. The Fund compares its performance to the S&P Target Date To 2030 Index, which returned 8.90% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Fundamental International Equity strategy
↑
Quantitative International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
↓
U.S. High Dividend Equity strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R5
8.17
7.12
7.25
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2030 Index
8.90
7.23
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 38,846,788
Holdings Count | $ / shares 4
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$38,846,788
Total Number of Portfolio Holdings
4
Total Management Fee Paid
$0
Portfolio Turnover Rate
56%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [63],[64]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2030 Fund
Class Name Class R6
Trading Symbol PDIZX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2030 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R61
$(8)
-0.08%
[65],[66]
Expenses Paid, Amount $ (8)
Expense Ratio, Percent (0.08%) [65]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R6 shares of Putnam Retirement Advantage 2030 Fund returned 8.28%. The Fund compares its performance to the S&P Target Date To 2030 Index, which returned 8.90% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Fundamental International Equity strategy
↑
Quantitative International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
↓
U.S. High Dividend Equity strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R6
8.28
7.22
7.35
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2030 Index
8.90
7.23
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 38,846,788
Holdings Count | $ / shares 4
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$38,846,788
Total Number of Portfolio Holdings
4
Total Management Fee Paid
$0
Portfolio Turnover Rate
56%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [67],[68]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2030 Fund
Class Name Class Y
Trading Symbol PDGKX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2030 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class Y1
$2
0.02%
[69],[70]
Expenses Paid, Amount $ 2 [69]
Expense Ratio, Percent 0.02% [69]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class Y shares of Putnam Retirement Advantage 2030 Fund returned 8.23%. The Fund compares its performance to the S&P Target Date To 2030 Index, which returned 8.90% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Fundamental International Equity strategy
↑
Quantitative International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
↓
U.S. High Dividend Equity strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class Y
8.23
7.12
7.25
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2030 Index
8.90
7.23
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 38,846,788
Holdings Count | $ / shares 4
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$38,846,788
Total Number of Portfolio Holdings
4
Total Management Fee Paid
$0
Portfolio Turnover Rate
56%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [71],[72]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2035 Fund
Class Name Class A
Trading Symbol PDFLX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2035 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class A1
$27
0.26%
[73],[74]
Expenses Paid, Amount $ 27 [73]
Expense Ratio, Percent 0.26% [73]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class A shares of Putnam Retirement Advantage 2035 Fund returned 10.30%. The Fund compares its performance to the S&P Target Date To 2035 Index, which returned 10.13% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Fundamental International Equity strategy
↑
Quantitative International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class A
10.30
9.08
8.98
Class A (with sales charge)
3.95
7.80
7.84
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2035 Index
10.13
8.54
8.11
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 45,446,662
Holdings Count | $ / shares 4
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$45,446,662
Total Number of Portfolio Holdings
4
Total Management Fee Paid
$0
Portfolio Turnover Rate
32%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [75],[76]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2035 Fund
Class Name Class C
Trading Symbol PDAWX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2035 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class C1
$107
1.02%
[77],[78]
Expenses Paid, Amount $ 107 [77]
Expense Ratio, Percent 1.02% [77]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class C shares of Putnam Retirement Advantage 2035 Fund returned 9.43%. The Fund compares its performance to the S&P Target Date To 2035 Index, which returned 10.13% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Fundamental International Equity strategy
↑
Quantitative International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class C
9.43
8.28
8.18
Class C (with sales charge)
8.43
8.28
8.18
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2035 Index
10.13
8.54
8.11
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 45,446,662
Holdings Count | $ / shares 4
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$45,446,662
Total Number of Portfolio Holdings
4
Total Management Fee Paid
$0
Portfolio Turnover Rate
32%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [79],[80]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2035 Fund
Class Name Class R
Trading Symbol PDAKX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2035 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R1
$70
0.67%
[81],[82]
Expenses Paid, Amount $ 70 [81]
Expense Ratio, Percent 0.67% [81]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R shares of Putnam Retirement Advantage 2035 Fund returned 9.80%. The Fund compares its performance to the S&P Target Date To 2035 Index, which returned 10.13% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Fundamental International Equity strategy
↑
Quantitative International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R
9.80
8.65
8.54
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2035 Index
10.13
8.54
8.11
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 45,446,662
Holdings Count | $ / shares 4
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$45,446,662
Total Number of Portfolio Holdings
4
Total Management Fee Paid
$0
Portfolio Turnover Rate
32%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [83],[84]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2035 Fund
Class Name Class R3
Trading Symbol PAFWX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2035 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R31
$43
0.41%
[85],[86]
Expenses Paid, Amount $ 43 [85]
Expense Ratio, Percent 0.41% [85]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R3 shares of Putnam Retirement Advantage 2035 Fund returned 10.04%. The Fund compares its performance to the S&P Target Date To 2035 Index, which returned 10.13% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Fundamental International Equity strategy
↑
Quantitative International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R3
10.04
8.91
8.81
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2035 Index
10.13
8.54
8.11
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 45,446,662
Holdings Count | $ / shares 4
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$45,446,662
Total Number of Portfolio Holdings
4
Total Management Fee Paid
$0
Portfolio Turnover Rate
32%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [87],[88]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2035 Fund
Class Name Class R4
Trading Symbol PAFUX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2035 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R41
$17
0.16%
[89],[90]
Expenses Paid, Amount $ 17 [89]
Expense Ratio, Percent 0.16% [89]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R4 shares of Putnam Retirement Advantage 2035 Fund returned 10.43%. The Fund compares its performance to the S&P Target Date To 2035 Index, which returned 10.13% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Fundamental International Equity strategy
↑
Quantitative International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R4
10.43
9.19
9.07
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2035 Index
10.13
8.54
8.11
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 45,446,662
Holdings Count | $ / shares 4
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$45,446,662
Total Number of Portfolio Holdings
4
Total Management Fee Paid
$0
Portfolio Turnover Rate
32%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [91],[92]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2035 Fund
Class Name Class R5
Trading Symbol PAFYX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2035 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R51
$2
0.02%
[93],[94]
Expenses Paid, Amount $ 2 [93]
Expense Ratio, Percent 0.02% [93]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R5 shares of Putnam Retirement Advantage 2035 Fund returned 10.54%. The Fund compares its performance to the S&P Target Date To 2035 Index, which returned 10.13% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Fundamental International Equity strategy
↑
Quantitative International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R5
10.54
9.35
9.23
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2035 Index
10.13
8.54
8.11
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 45,446,662
Holdings Count | $ / shares 4
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$45,446,662
Total Number of Portfolio Holdings
4
Total Management Fee Paid
$0
Portfolio Turnover Rate
32%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [95],[96]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2035 Fund
Class Name Class R6
Trading Symbol PCDLX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2035 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R61
$(9)
-0.09%
[97],[98]
Expenses Paid, Amount $ (9)
Expense Ratio, Percent (0.09%) [97]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R6 shares of Putnam Retirement Advantage 2035 Fund returned 10.65%. The Fund compares its performance to the S&P Target Date To 2035 Index, which returned 10.13% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Fundamental International Equity strategy
↑
Quantitative International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R6
10.65
9.46
9.35
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2035 Index
10.13
8.54
8.11
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 45,446,662
Holdings Count | $ / shares 4
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$45,446,662
Total Number of Portfolio Holdings
4
Total Management Fee Paid
$0
Portfolio Turnover Rate
32%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [99],[100]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2035 Fund
Class Name Class Y
Trading Symbol POWYX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2035 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class Y1
$1
0.01%
[101],[102]
Expenses Paid, Amount $ 1 [101]
Expense Ratio, Percent 0.01% [101]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class Y shares of Putnam Retirement Advantage 2035 Fund returned 10.58%. The Fund compares its performance to the S&P Target Date To 2035 Index, which returned 10.13% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Fundamental International Equity strategy
↑
Quantitative International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class Y
10.58
9.36
9.24
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2035 Index
10.13
8.54
8.11
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 45,446,662
Holdings Count | $ / shares 4
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$45,446,662
Total Number of Portfolio Holdings
4
Total Management Fee Paid
$0
Portfolio Turnover Rate
32%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [103],[104]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2040 Fund
Class Name Class A
Trading Symbol PCCLX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2040 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class A1
$23
0.22%
[105],[106]
Expenses Paid, Amount $ 23 [105]
Expense Ratio, Percent 0.22% [105]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class A shares of Putnam Retirement Advantage 2040 Fund returned 11.89%. The Fund compares its performance to the S&P Target Date To 2040 Index, which returned 11.25% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class A
11.89
10.39
10.11
Class A (with sales charge)
5.45
9.09
8.96
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2040 Index
11.25
9.67
8.92
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 38,655,513
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$38,655,513
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
39%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [107],[108]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2040 Fund
Class Name Class C
Trading Symbol PBBZX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2040 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class C1
$102
0.97%
[109],[110]
Expenses Paid, Amount $ 102 [109]
Expense Ratio, Percent 0.97% [109]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class C shares of Putnam Retirement Advantage 2040 Fund returned 10.96%. The Fund compares its performance to the S&P Target Date To 2040 Index, which returned 11.25% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class C
10.96
9.56
9.28
Class C (with sales charge)
9.96
9.56
9.28
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2040 Index
11.25
9.67
8.92
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 38,655,513
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$38,655,513
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
39%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [111],[112]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2040 Fund
Class Name Class R
Trading Symbol PBAOX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2040 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R1
$66
0.62%
[113],[114]
Expenses Paid, Amount $ 66 [113]
Expense Ratio, Percent 0.62% [113]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R shares of Putnam Retirement Advantage 2040 Fund returned 11.45%. The Fund compares its performance to the S&P Target Date To 2040 Index, which returned 11.25% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R
11.45
9.95
9.67
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2040 Index
11.25
9.67
8.92
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 38,655,513
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$38,655,513
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
39%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [115],[116]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2040 Fund
Class Name Class R3
Trading Symbol PAGKX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2040 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R31
$39
0.37%
[117],[118]
Expenses Paid, Amount $ 39 [117]
Expense Ratio, Percent 0.37% [117]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R3 shares of Putnam Retirement Advantage 2040 Fund returned 11.70%. The Fund compares its performance to the S&P Target Date To 2040 Index, which returned 11.25% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R3
11.70
10.22
9.94
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2040 Index
11.25
9.67
8.92
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 38,655,513
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$38,655,513
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
39%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [119],[120]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2040 Fund
Class Name Class R4
Trading Symbol PAGJX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2040 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R41
$13
0.12%
[121],[122]
Expenses Paid, Amount $ 13 [121]
Expense Ratio, Percent 0.12% [121]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R4 shares of Putnam Retirement Advantage 2040 Fund returned 11.93%. The Fund compares its performance to the S&P Target Date To 2040 Index, which returned 11.25% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R4
11.93
10.48
10.19
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2040 Index
11.25
9.67
8.92
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 38,655,513
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$38,655,513
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
39%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [123],[124]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2040 Fund
Class Name Class R5
Trading Symbol PAGOX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2040 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R51
$(3)
-0.03%
[125],[126]
Expenses Paid, Amount $ (3)
Expense Ratio, Percent (0.03%) [125]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R5 shares of Putnam Retirement Advantage 2040 Fund returned 12.10%. The Fund compares its performance to the S&P Target Date To 2040 Index, which returned 11.25% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R5
12.10
10.64
10.35
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2040 Index
11.25
9.67
8.92
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 38,655,513
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$38,655,513
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
39%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [127],[128]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2040 Fund
Class Name Class R6
Trading Symbol PBAMX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2040 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R61
$(14)
-0.13%
[129],[130]
Expenses Paid, Amount $ (14)
Expense Ratio, Percent (0.13%) [129]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R6 shares of Putnam Retirement Advantage 2040 Fund returned 12.32%. The Fund compares its performance to the S&P Target Date To 2040 Index, which returned 11.25% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R6
12.32
10.77
10.48
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2040 Index
11.25
9.67
8.92
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 38,655,513
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$38,655,513
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
39%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [131],[132]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2040 Fund
Class Name Class Y
Trading Symbol PALZX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2040 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class Y1
$(3)
-0.03%
[133],[134]
Expenses Paid, Amount $ (3)
Expense Ratio, Percent (0.03%) [133]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class Y shares of Putnam Retirement Advantage 2040 Fund returned 12.08%. The Fund compares its performance to the S&P Target Date To 2040 Index, which returned 11.25% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class Y
12.08
10.64
10.35
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2040 Index
11.25
9.67
8.92
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 38,655,513
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$38,655,513
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
39%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [135],[136]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2045 Fund
Class Name Class A
Trading Symbol PALGX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2045 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class A1
$20
0.19%
[137],[138]
Expenses Paid, Amount $ 20 [137]
Expense Ratio, Percent 0.19% [137]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class A shares of Putnam Retirement Advantage 2045 Fund returned 12.95%. The Fund compares its performance to the S&P Target Date To 2045 Index, which returned 12.16% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class A
12.95
11.19
10.81
Class A (with sales charge)
6.45
9.88
9.66
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2045 Index
12.16
10.55
9.60
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 26,850,748
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$26,850,748
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
30%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [139],[140]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2045 Fund
Class Name Class C
Trading Symbol PAFPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2045 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class C1
$100
0.94%
[141],[142]
Expenses Paid, Amount $ 100 [141]
Expense Ratio, Percent 0.94% [141]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class C shares of Putnam Retirement Advantage 2045 Fund returned 12.06%. The Fund compares its performance to the S&P Target Date To 2045 Index, which returned 12.16% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class C
12.06
10.37
9.99
Class C (with sales charge)
11.06
10.37
9.99
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2045 Index
12.16
10.55
9.60
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 26,850,748
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$26,850,748
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
30%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [143],[144]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2045 Fund
Class Name Class R
Trading Symbol PAFZX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2045 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R1
$63
0.59%
[145],[146]
Expenses Paid, Amount $ 63 [145]
Expense Ratio, Percent 0.59% [145]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R shares of Putnam Retirement Advantage 2045 Fund returned 12.41%. The Fund compares its performance to the S&P Target Date To 2045 Index, which returned 12.16% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R
12.41
10.76
10.38
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2045 Index
12.16
10.55
9.60
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 26,850,748
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$26,850,748
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
30%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [147],[148]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2045 Fund
Class Name Class R3
Trading Symbol PAGQX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2045 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R31
$36
0.34%
[149],[150]
Expenses Paid, Amount $ 36 [149]
Expense Ratio, Percent 0.34% [149]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R3 shares of Putnam Retirement Advantage 2045 Fund returned 12.69%. The Fund compares its performance to the S&P Target Date To 2045 Index, which returned 12.16% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R3
12.69
11.03
10.65
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2045 Index
12.16
10.55
9.60
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 26,850,748
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$26,850,748
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
30%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [151],[152]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2045 Fund
Class Name Class R4
Trading Symbol PAGUX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2045 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R41
$10
0.09%
[153],[154]
Expenses Paid, Amount $ 10 [153]
Expense Ratio, Percent 0.09% [153]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R4 shares of Putnam Retirement Advantage 2045 Fund returned 12.99%. The Fund compares its performance to the S&P Target Date To 2045 Index, which returned 12.16% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R4
12.99
11.30
10.91
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2045 Index
12.16
10.55
9.60
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 26,850,748
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$26,850,748
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
30%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [155],[156]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2045 Fund
Class Name Class R5
Trading Symbol PAGWX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2045 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R51
$(6)
-0.06%
[157],[158]
Expenses Paid, Amount $ (6)
Expense Ratio, Percent (0.06%) [157]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R5 shares of Putnam Retirement Advantage 2045 Fund returned 13.18%. The Fund compares its performance to the S&P Target Date To 2045 Index, which returned 12.16% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R5
13.18
11.47
11.08
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2045 Index
12.16
10.55
9.60
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 26,850,748
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$26,850,748
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
30%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [159],[160]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2045 Fund
Class Name Class R6
Trading Symbol PAFMX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2045 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R61
$(17)
-0.16%
[161],[162]
Expenses Paid, Amount $ (17)
Expense Ratio, Percent (0.16%) [161]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R6 shares of Putnam Retirement Advantage 2045 Fund returned 13.29%. The Fund compares its performance to the S&P Target Date To 2045 Index, which returned 12.16% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R6
13.29
11.58
11.20
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2045 Index
12.16
10.55
9.60
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 26,850,748
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$26,850,748
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
30%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [163],[164]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2045 Fund
Class Name Class Y
Trading Symbol PAFJX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2045 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class Y1
$(6)
-0.06%
[165],[166]
Expenses Paid, Amount $ (6)
Expense Ratio, Percent (0.06%) [165]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class Y shares of Putnam Retirement Advantage 2045 Fund returned 13.13%. The Fund compares its performance to the S&P Target Date To 2045 Index, which returned 12.16% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class Y
13.13
11.46
11.08
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2045 Index
12.16
10.55
9.60
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 26,850,748
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$26,850,748
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
30%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [167],[168]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2050 Fund
Class Name Class A
Trading Symbol PAEZX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2050 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class A1
$19
0.18%
[169],[170]
Expenses Paid, Amount $ 19 [169]
Expense Ratio, Percent 0.18% [169]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class A shares of Putnam Retirement Advantage 2050 Fund returned 13.57%. The Fund compares its performance to the S&P Target Date To 2050 Index, which returned 12.60% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class A
13.57
11.86
11.49
Class A (with sales charge)
7.04
10.54
10.34
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2050 Index
12.60
11.04
10.06
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 25,807,493
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 28.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$25,807,493
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
28%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [171],[172]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2050 Fund
Class Name Class C
Trading Symbol PAENX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2050 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class C1
$99
0.93%
[173],[174]
Expenses Paid, Amount $ 99 [173]
Expense Ratio, Percent 0.93% [173]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class C shares of Putnam Retirement Advantage 2050 Fund returned 12.66%. The Fund compares its performance to the S&P Target Date To 2050 Index, which returned 12.60% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class C
12.66
11.02
10.66
Class C (with sales charge)
11.66
11.02
10.66
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2050 Index
12.60
11.04
10.06
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 25,807,493
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 28.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$25,807,493
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
28%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [175],[176]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2050 Fund
Class Name Class R
Trading Symbol PAEQX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2050 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R1
$62
0.58%
[177],[178]
Expenses Paid, Amount $ 62 [177]
Expense Ratio, Percent 0.58% [177]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R shares of Putnam Retirement Advantage 2050 Fund returned 13.12%. The Fund compares its performance to the S&P Target Date To 2050 Index, which returned 12.60% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R
13.12
11.41
11.05
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2050 Index
12.60
11.04
10.06
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 25,807,493
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 28.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$25,807,493
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
28%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [179],[180]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2050 Fund
Class Name Class R3
Trading Symbol PAGZX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2050 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R31
$35
0.33%
[181],[182]
Expenses Paid, Amount $ 35 [181]
Expense Ratio, Percent 0.33% [181]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R3 shares of Putnam Retirement Advantage 2050 Fund returned 13.37%. The Fund compares its performance to the S&P Target Date To 2050 Index, which returned 12.60% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R3
13.37
11.68
11.32
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2050 Index
12.60
11.04
10.06
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 25,807,493
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 28.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$25,807,493
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
28%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [183],[184]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2050 Fund
Class Name Class R4
Trading Symbol PAHAX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2050 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R41
$9
0.08%
[185],[186]
Expenses Paid, Amount $ 9 [185]
Expense Ratio, Percent 0.08% [185]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R4 shares of Putnam Retirement Advantage 2050 Fund returned 13.68%. The Fund compares its performance to the S&P Target Date To 2050 Index, which returned 12.60% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R4
13.68
11.96
11.59
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2050 Index
12.60
11.04
10.06
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 25,807,493
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 28.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$25,807,493
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
28%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [187],[188]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2050 Fund
Class Name Class R5
Trading Symbol PAHDX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2050 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R51
$(7)
-0.07%
[189],[190]
Expenses Paid, Amount $ (7)
Expense Ratio, Percent (0.07%) [189]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R5 shares of Putnam Retirement Advantage 2050 Fund returned 13.77%. The Fund compares its performance to the S&P Target Date To 2050 Index, which returned 12.60% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R5
13.77
12.12
11.74
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2050 Index
12.60
11.04
10.06
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 25,807,493
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 28.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$25,807,493
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
28%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [191],[192]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2050 Fund
Class Name Class R6
Trading Symbol PAEKX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2050 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R61
$(18)
-0.17%
[193],[194]
Expenses Paid, Amount $ (18)
Expense Ratio, Percent (0.17%) [193]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R6 shares of Putnam Retirement Advantage 2050 Fund returned 13.89%. The Fund compares its performance to the S&P Target Date To 2050 Index, which returned 12.60% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R6
13.89
12.23
11.86
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2050 Index
12.60
11.04
10.06
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 25,807,493
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 28.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$25,807,493
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
28%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [195],[196]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2050 Fund
Class Name Class Y
Trading Symbol PHPDX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2050 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class Y1
$(7)
-0.07%
[197],[198]
Expenses Paid, Amount $ (7)
Expense Ratio, Percent (0.07%) [197]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class Y shares of Putnam Retirement Advantage 2050 Fund returned 13.77%. The Fund compares its performance to the S&P Target Date To 2050 Index, which returned 12.60% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class Y
13.77
12.12
11.74
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2050 Index
12.60
11.04
10.06
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 25,807,493
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 28.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$25,807,493
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
28%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [199],[200]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2055 Fund
Class Name Class A
Trading Symbol PADYX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2055 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class A1
$20
0.19%
[201],[202]
Expenses Paid, Amount $ 20 [201]
Expense Ratio, Percent 0.19% [201]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class A shares of Putnam Retirement Advantage 2055 Fund returned 14.17%. The Fund compares its performance to the S&P Target Date To 2055 Index, which returned 12.99% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class A
14.17
12.50
12.11
Class A (with sales charge)
7.61
11.17
10.95
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2055 Index
12.99
11.21
10.13
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 17,620,748
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 45.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$17,620,748
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
45%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [203],[204]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2055 Fund
Class Name Class C
Trading Symbol PACWX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2055 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class C1
$100
0.94%
[205],[206]
Expenses Paid, Amount $ 100 [205]
Expense Ratio, Percent 0.94% [205]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class C shares of Putnam Retirement Advantage 2055 Fund returned 13.26%. The Fund compares its performance to the S&P Target Date To 2055 Index, which returned 12.99% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class C
13.26
11.67
11.29
Class C (with sales charge)
12.26
11.67
11.29
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2055 Index
12.99
11.21
10.13
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 17,620,748
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 45.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$17,620,748
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
45%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [207],[208]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2055 Fund
Class Name Class R
Trading Symbol PACSX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2055 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R1
$63
0.59%
[209],[210]
Expenses Paid, Amount $ 63 [209]
Expense Ratio, Percent 0.59% [209]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R shares of Putnam Retirement Advantage 2055 Fund returned 13.67%. The Fund compares its performance to the S&P Target Date To 2055 Index, which returned 12.99% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R
13.67
12.05
11.66
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2055 Index
12.99
11.21
10.13
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 17,620,748
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 45.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$17,620,748
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
45%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [211],[212]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2055 Fund
Class Name Class R3
Trading Symbol PAHEX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2055 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R31
$36
0.34%
[213],[214]
Expenses Paid, Amount $ 36 [213]
Expense Ratio, Percent 0.34% [213]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R3 shares of Putnam Retirement Advantage 2055 Fund returned 14.01%. The Fund compares its performance to the S&P Target Date To 2055 Index, which returned 12.99% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R3
14.01
12.33
11.95
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2055 Index
12.99
11.21
10.13
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 17,620,748
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 45.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$17,620,748
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
45%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [215],[216]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2055 Fund
Class Name Class R4
Trading Symbol PAHFX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2055 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R41
$10
0.09%
[217],[218]
Expenses Paid, Amount $ 10 [217]
Expense Ratio, Percent 0.09% [217]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R4 shares of Putnam Retirement Advantage 2055 Fund returned 14.28%. The Fund compares its performance to the S&P Target Date To 2055 Index, which returned 12.99% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R4
14.28
12.61
12.21
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2055 Index
12.99
11.21
10.13
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 17,620,748
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 45.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$17,620,748
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
45%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [219],[220]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2055 Fund
Class Name Class R5
Trading Symbol PAHGX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2055 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R51
$6)
-0.06%
[221],[222]
Expenses Paid, Amount $ 6 [221]
Expense Ratio, Percent (0.06%) [221]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R5 shares of Putnam Retirement Advantage 2055 Fund returned 14.40%. The Fund compares its performance to the S&P Target Date To 2055 Index, which returned 12.99% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R5
14.40
12.77
12.37
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2055 Index
12.99
11.21
10.13
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 17,620,748
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 45.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$17,620,748
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
45%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [223],[224]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2055 Fund
Class Name Class R6
Trading Symbol PACJX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2055 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R61
$(17)
-0.16%
[225],[226]
Expenses Paid, Amount $ (17)
Expense Ratio, Percent (0.16%) [225]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R6 shares of Putnam Retirement Advantage 2055 Fund returned 14.51%. The Fund compares its performance to the S&P Target Date To 2055 Index, which returned 12.99% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R6
14.51
12.88
12.49
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2055 Index
12.99
11.21
10.13
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 17,620,748
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 45.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$17,620,748
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
45%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [227],[228]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2055 Fund
Class Name Class Y
Trading Symbol PAAWX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2055 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class Y1
$(6)
-0.06%
[229],[230]
Expenses Paid, Amount $ (6)
Expense Ratio, Percent (0.06%) [229]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class Y shares of Putnam Retirement Advantage 2055 Fund returned 14.41%. The Fund compares its performance to the S&P Target Date To 2055 Index, which returned 12.99% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class Y
14.41
12.77
12.38
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2055 Index
12.99
11.21
10.13
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 17,620,748
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 45.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$17,620,748
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
45%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [231],[232]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2060 Fund
Class Name Class A
Trading Symbol PAAVX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2060 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class A1
$21
0.20%
[233],[234]
Expenses Paid, Amount $ 21 [233]
Expense Ratio, Percent 0.20% [233]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class A shares of Putnam Retirement Advantage 2060 Fund returned 14.71%. The Fund compares its performance to the S&P Target Date To 2060 Index, which returned 13.07% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class A
14.71
13.04
12.65
Class A (with sales charge)
8.11
11.71
11.48
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2060 Index
13.07
11.30
10.32
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 13,283,781
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$13,283,781
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
31%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [235],[236]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2060 Fund
Class Name Class C
Trading Symbol PAAPX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2060 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class C1
$102
0.95%
[237],[238]
Expenses Paid, Amount $ 102 [237]
Expense Ratio, Percent 0.95% [237]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class C shares of Putnam Retirement Advantage 2060 Fund returned 13.87%. The Fund compares its performance to the S&P Target Date To 2060 Index, which returned 13.07% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class C
13.87
12.20
11.81
Class C (with sales charge)
12.87
12.20
11.81
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2060 Index
13.07
11.30
10.32
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 13,283,781
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$13,283,781
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
31%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [239],[240]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2060 Fund
Class Name Class R
Trading Symbol PAAMX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2060 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R1
$64
0.60%
[241],[242]
Expenses Paid, Amount $ 64 [241]
Expense Ratio, Percent 0.60% [241]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R shares of Putnam Retirement Advantage 2060 Fund returned 14.27%. The Fund compares its performance to the S&P Target Date To 2060 Index, which returned 13.07% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R
14.27
12.59
12.19
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2060 Index
13.07
11.30
10.32
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 13,283,781
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$13,283,781
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
31%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [243],[244]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2060 Fund
Class Name Class R3
Trading Symbol PAHJX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2060 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R31
$38
0.35%
[245],[246]
Expenses Paid, Amount $ 38 [245]
Expense Ratio, Percent 0.35% [245]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R3 shares of Putnam Retirement Advantage 2060 Fund returned 14.55%. The Fund compares its performance to the S&P Target Date To 2060 Index, which returned 13.07% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R3
14.55
12.87
12.47
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2060 Index
13.07
11.30
10.32
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 13,283,781
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$13,283,781
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
31%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [247],[248]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2060 Fund
Class Name Class R4
Trading Symbol PAHKX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2060 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R41
$11
0.10%
[249],[250]
Expenses Paid, Amount $ 11 [249]
Expense Ratio, Percent 0.10% [249]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R4 shares of Putnam Retirement Advantage 2060 Fund returned 14.85%. The Fund compares its performance to the S&P Target Date To 2060 Index, which returned 13.07% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R4
14.85
13.14
12.73
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2060 Index
13.07
11.30
10.32
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 13,283,781
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$13,283,781
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
31%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [251],[252]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2060 Fund
Class Name Class R5
Trading Symbol PAHLX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2060 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R51
$(5)
-0.05%
[253],[254]
Expenses Paid, Amount $ (5)
Expense Ratio, Percent (0.05%) [253]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R5 shares of Putnam Retirement Advantage 2060 Fund returned 14.99%. The Fund compares its performance to the S&P Target Date To 2060 Index, which returned 13.07% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R5
14.99
13.31
12.90
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2060 Index
13.07
11.30
10.32
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 13,283,781
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$13,283,781
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
31%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [255],[256]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2060 Fund
Class Name Class R6
Trading Symbol PAAKX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2060 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R61
$(16)
-0.15%
[257],[258]
Expenses Paid, Amount $ (16)
Expense Ratio, Percent (0.15%) [257]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R6 shares of Putnam Retirement Advantage 2060 Fund returned 15.09%. The Fund compares its performance to the S&P Target Date To 2060 Index, which returned 13.07% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class R6
15.09
13.42
13.02
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2060 Index
13.07
11.30
10.32
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 13,283,781
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$13,283,781
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
31%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [259],[260]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2060 Fund
Class Name Class Y
Trading Symbol PAKJX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2060 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class Y1
$(5)
-0.05%
[261],[262]
Expenses Paid, Amount $ (5)
Expense Ratio, Percent (0.05%) [261]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class Y shares of Putnam Retirement Advantage 2060 Fund returned 14.97%. The Fund compares its performance to the S&P Target Date To 2060 Index, which returned 13.07% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
5 Year
Since Inception
(12/31/2019)
Class Y
14.97
13.31
12.90
Russell 3000 Index
15.84
14.11
14.15
Bloomberg U.S. Aggregate Index
3.14
-0.68
0.57
S&P Target Date To 2060 Index
13.07
11.30
10.32
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 13,283,781
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$13,283,781
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
31%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [263],[264]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2065 Fund
Class Name Class A
Trading Symbol PCJZX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2065 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class A1
$19
0.18%
[265],[266]
Expenses Paid, Amount $ 19 [265]
Expense Ratio, Percent 0.18% [265]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class A shares of Putnam Retirement Advantage 2065 Fund returned 15.14%. The Fund compares its performance to the S&P Target Date To 2065+ Index, which returned 13.38% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
Since Inception
(12/29/2020)
Class A
15.14
12.16
Class A (with sales charge)
8.52
10.74
Russell 3000 Index
15.84
12.91
Bloomberg U.S. Aggregate Index
3.14
-0.82
S&P Target Date To 2065+ Index
13.38
10.05
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 3,291,842
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 48.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$3,291,842
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
48%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [267],[268]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2065 Fund
Class Name Class C
Trading Symbol PCKBX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2065 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class C1
$101
0.94%
[269],[270]
Expenses Paid, Amount $ 101 [269]
Expense Ratio, Percent 0.94% [269]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class C shares of Putnam Retirement Advantage 2065 Fund returned 14.29%. The Fund compares its performance to the S&P Target Date To 2065+ Index, which returned 13.38% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
Since Inception
(12/29/2020)
Class C
14.29
11.32
Class C (with sales charge)
13.29
11.32
Russell 3000 Index
15.84
12.91
Bloomberg U.S. Aggregate Index
3.14
-0.82
S&P Target Date To 2065+ Index
13.38
10.05
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 3,291,842
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 48.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$3,291,842
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
48%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [271],[272]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2065 Fund
Class Name Class R
Trading Symbol PCKFX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2065 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R1
$63
0.59%
[273],[274]
Expenses Paid, Amount $ 63 [273]
Expense Ratio, Percent 0.59% [273]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R shares of Putnam Retirement Advantage 2065 Fund returned 14.69%. The Fund compares its performance to the S&P Target Date To 2065+ Index, which returned 13.38% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
Since Inception
(12/29/2020)
Class R
14.69
11.71
Russell 3000 Index
15.84
12.91
Bloomberg U.S. Aggregate Index
3.14
-0.82
S&P Target Date To 2065+ Index
13.38
10.05
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 3,291,842
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 48.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$3,291,842
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
48%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [275],[276]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2065 Fund
Class Name Class R3
Trading Symbol PCKGX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2065 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R31
$37
0.34%
[277],[278]
Expenses Paid, Amount $ 37 [277]
Expense Ratio, Percent 0.34% [277]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R3 shares of Putnam Retirement Advantage 2065 Fund returned 14.88%. The Fund compares its performance to the S&P Target Date To 2065+ Index, which returned 13.38% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
Since Inception
(12/29/2020)
Class R3
14.88
11.99
Russell 3000 Index
15.84
12.91
Bloomberg U.S. Aggregate Index
3.14
-0.82
S&P Target Date To 2065+ Index
13.38
10.05
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 3,291,842
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 48.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$3,291,842
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
48%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [279],[280]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2065 Fund
Class Name Class R4
Trading Symbol PCKHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2065 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R41
$10
0.09%
[281],[282]
Expenses Paid, Amount $ 10 [281]
Expense Ratio, Percent 0.09% [281]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R4 shares of Putnam Retirement Advantage 2065 Fund returned 15.29%. The Fund compares its performance to the S&P Target Date To 2065+ Index, which returned 13.38% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
Since Inception
(12/29/2020)
Class R4
15.29
12.28
Russell 3000 Index
15.84
12.91
Bloomberg U.S. Aggregate Index
3.14
-0.82
S&P Target Date To 2065+ Index
13.38
10.05
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 3,291,842
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 48.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$3,291,842
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
48%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [283],[284]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2065 Fund
Class Name Class R5
Trading Symbol PCKIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2065 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R51
$(6)
-0.06%
[285],[286]
Expenses Paid, Amount $ (6)
Expense Ratio, Percent (0.06%) [285]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R5 shares of Putnam Retirement Advantage 2065 Fund returned 15.37%. The Fund compares its performance to the S&P Target Date To 2065+ Index, which returned 13.38% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
Since Inception
(12/29/2020)
Class R5
15.37
12.44
Russell 3000 Index
15.84
12.91
Bloomberg U.S. Aggregate Index
3.14
-0.82
S&P Target Date To 2065+ Index
13.38
10.05
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 3,291,842
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 48.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$3,291,842
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
48%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [287],[288]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2065 Fund
Class Name Class R6
Trading Symbol PCKJX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2065 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R61
$(18)
-0.17%
[289],[290]
Expenses Paid, Amount $ (18)
Expense Ratio, Percent (0.17%) [289]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class R6 shares of Putnam Retirement Advantage 2065 Fund returned 15.50%. The Fund compares its performance to the S&P Target Date To 2065+ Index, which returned 13.38% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
Since Inception
(12/29/2020)
Class R6
15.50
12.54
Russell 3000 Index
15.84
12.91
Bloomberg U.S. Aggregate Index
3.14
-0.82
S&P Target Date To 2065+ Index
13.38
10.05
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 3,291,842
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 48.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$3,291,842
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
48%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [291],[292]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2065 Fund
Class Name Class Y
Trading Symbol PCKEX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2065 Fund for the period September 1, 2024, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class Y1
$(8)
-0.07%
[293],[294]
Expenses Paid, Amount $ (8)
Expense Ratio, Percent (0.07%) [293]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the twelve months ended August 31, 2025, Class Y shares of Putnam Retirement Advantage 2065 Fund returned 15.47%. The Fund compares its performance to the S&P Target Date To 2065+ Index, which returned 13.38% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
1 Year
Since Inception
(12/29/2020)
Class Y
15.47
12.45
Russell 3000 Index
15.84
12.91
Bloomberg U.S. Aggregate Index
3.14
-0.82
S&P Target Date To 2065+ Index
13.38
10.05
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.
Material Change Date Sep. 01, 2024
Updated Performance Information Location [Text Block]
For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 3,291,842
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 48.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$3,291,842
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
48%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [295],[296]
Material Fund Change [Text Block]
HOW HAS THE FUND CHANGED?
Effective November 1, 2024 (the “Effective Date”), Putnam Investments Limited (“PIL”), a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Resources, Inc. (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers, Inc. (“Franklin Advisers”) and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-advisor of the Fund on the Effective Date.
Effective March 31, 2025, the portfolio managers for the Fund are Adrian Chan, Brett Goldstein, Jacqueline Kenney, Thomas A. Nelson, and Jonathan M. Schreiber.
This is a summary of certain changes to the Fund since September 1, 2024. For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by January 1, 2026, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or
funddocuments@putnam.com.
Updated Prospectus Phone Number (800) 225-1581
Updated Prospectus Email Address funddocuments@putnam.com
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2070 Fund
Class Name Class A
Trading Symbol PAJFX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2070 Fund for the period August 1, 2025, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class A1,2
$20
0.20%
[297],[298],[299]
Expenses Paid, Amount $ 20 [297],[298]
Expense Ratio, Percent 0.20% [297],[298]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the period August 1, 2025, to August 31, 2025, Class A shares of Putnam Retirement Advantage 2070 Fund returned 4.00%. The Fund compares its performance to the S&P Target Date To 2065+ Index, which returned 3.83% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
Since Inception
(8/1/2025)
Class A
4.00
Russell 3000 Index
4.02
Bloomberg U.S. Aggregate Index
0.38
S&P Target Date To 2065+ Index
3.83
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 current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 1,060,896
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$1,060,896
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
0%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [300],[301]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2070 Fund
Class Name Class C
Trading Symbol PAJHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2070 Fund for the period August 1, 2025, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class C1,2
$98
0.96%
[302],[303],[304]
Expenses Paid, Amount $ 98 [302],[303]
Expense Ratio, Percent 0.96% [302],[303]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the period August 1, 2025, to August 31, 2025, Class C shares of Putnam Retirement Advantage 2070 Fund returned 4.00%. The Fund compares its performance to the S&P Target Date To 2065+ Index, which returned 3.83% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
Since Inception
(8/1/2025)
Class C
4.00
Russell 3000 Index
4.02
Bloomberg U.S. Aggregate Index
0.38
S&P Target Date To 2065+ Index
3.83
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 current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 1,060,896
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$1,060,896
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
0%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [305],[306]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2070 Fund
Class Name Class R
Trading Symbol PAJIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2070 Fund for the period August 1, 2025, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R1,2
$63
0.62%
[307],[308],[309]
Expenses Paid, Amount $ 63 [307],[308]
Expense Ratio, Percent 0.62% [307],[308]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the period August 1, 2025, to August 31, 2025, Class R shares of Putnam Retirement Advantage 2070 Fund returned 4.10%. The Fund compares its performance to the S&P Target Date To 2065+ Index, which returned 3.83% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
Since Inception
(8/1/2025)
Class R
4.10
Russell 3000 Index
4.02
Bloomberg U.S. Aggregate Index
0.38
S&P Target Date To 2065+ Index
3.83
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 current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 1,060,896
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$1,060,896
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
0%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [310],[311]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2070 Fund
Class Name Class R3
Trading Symbol PAJJX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2070 Fund for the period August 1, 2025, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R31,2
$40
0.39%
[312],[313],[314]
Expenses Paid, Amount $ 40 [312],[313]
Expense Ratio, Percent 0.39% [312],[313]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the period August 1, 2025, to August 31, 2025, Class R3 shares of Putnam Retirement Advantage 2070 Fund returned 4.10%. The Fund compares its performance to the S&P Target Date To 2065+ Index, which returned 3.83% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
Since Inception
(8/1/2025)
Class R3
4.10
Russell 3000 Index
4.02
Bloomberg U.S. Aggregate Index
0.38
S&P Target Date To 2065+ Index
3.83
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 current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 1,060,896
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$1,060,896
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
0%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [315],[316]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2070 Fund
Class Name Class R4
Trading Symbol PAJKX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2070 Fund for the period August 1, 2025, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R41,2
$14
0.14%
[317],[318],[319]
Expenses Paid, Amount $ 14 [317],[318]
Expense Ratio, Percent 0.14% [317],[318]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the period August 1, 2025, to August 31, 2025, Class R4 shares of Putnam Retirement Advantage 2070 Fund returned 4.10%. The Fund compares its performance to the S&P Target Date To 2065+ Index, which returned 3.83% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
Since Inception
(8/1/2025)
Class R4
4.10
Russell 3000 Index
4.02
Bloomberg U.S. Aggregate Index
0.38
S&P Target Date To 2065+ Index
3.83
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 current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 1,060,896
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$1,060,896
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
0%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [320],[321]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2070 Fund
Class Name Class R5
Trading Symbol PAJLX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2070 Fund for the period August 1, 2025, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R51,2
$(1)
-0.01%
[322],[323],[324]
Expenses Paid, Amount $ (1)
Expense Ratio, Percent (0.01%) [322],[323]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the period August 1, 2025, to August 31, 2025, Class R5 shares of Putnam Retirement Advantage 2070 Fund returned 4.10%. The Fund compares its performance to the S&P Target Date To 2065+ Index, which returned 3.83% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
Since Inception
(8/1/2025)
Class R5
4.10
Russell 3000 Index
4.02
Bloomberg U.S. Aggregate Index
0.38
S&P Target Date To 2065+ Index
3.83
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 current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 1,060,896
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$1,060,896
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
0%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [325],[326]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2070 Fund
Class Name Class R6
Trading Symbol PAJMX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2070 Fund for the period August 1, 2025, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class R61,2
$(11)
-0.11%
[327],[328],[329]
Expenses Paid, Amount $ (11)
Expense Ratio, Percent (0.11%) [327],[328]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the period August 1, 2025, to August 31, 2025, Class R6 shares of Putnam Retirement Advantage 2070 Fund returned 4.10%. The Fund compares its performance to the S&P Target Date To 2065+ Index, which returned 3.83% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
Since Inception
(8/1/2025)
Class R6
4.10
Russell 3000 Index
4.02
Bloomberg U.S. Aggregate Index
0.38
S&P Target Date To 2065+ Index
3.83
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 current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 1,060,896
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$1,060,896
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
0%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [330],[331]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Retirement Advantage 2070 Fund
Class Name Class Y
Trading Symbol PAJNX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Putnam Retirement Advantage 2070 Fund for the period August 1, 2025, to August 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents. You can also request this information by contacting us at (800) 225-1581.
Additional Information Phone Number (800) 225-1581
Additional Information Website https://www.franklintempleton.com/regulatory-fund-documents
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Class Y1,2
$(1)
-0.01%
[332],[333],[334]
Expenses Paid, Amount $ (1)
Expense Ratio, Percent (0.01%) [332],[333]
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the period August 1, 2025, to August 31, 2025, Class Y shares of Putnam Retirement Advantage 2070 Fund returned 4.10%. The Fund compares its performance to the S&P Target Date To 2065+ Index, which returned 3.83% for the same period.
PERFORMANCE HIGHLIGHTS
Top contributors to performance:
↑
Quantitative Large Cap strategy
↑
Quantitative International Equity strategy
↑
Fundamental International Equity strategy
Top detractors from performance:
↓
Fundamental U.S. Large Cap Growth strategy
↓
High Yield Fixed Income strategy
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended August 31, 2025
 
Since Inception
(8/1/2025)
Class Y
4.10
Russell 3000 Index
4.02
Bloomberg U.S. Aggregate Index
0.38
S&P Target Date To 2065+ Index
3.83
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 current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit
https://www.franklintempleton.com/investments/options/mutual-funds.
Important data provider notices and terms available at www.franklintempletondatasources.com.
Net Assets $ 1,060,896
Holdings Count | $ / shares 3
Advisory Fees Paid, Amount $ 0
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of August 31, 2025)
Total Net Assets
$1,060,896
Total Number of Portfolio Holdings
3
Total Management Fee Paid
$0
Portfolio Turnover Rate
0%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of August 31, 2025)
Portfolio Composition*,† (% of Total Investments)
image
 [335],[336]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
[1]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[2]
2 Includes non-recurring merger related expenses. Excluding these costs, net expenses would have been 0.09%.
[3]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[4]
* Does not include derivatives, except purchased options, if any.  
[5]
† Certain categories may represent less than 0.1%.
[6]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[7]
2 Includes non-recurring merger related expenses. Excluding these costs, net expenses would have been 0.53%.
[8]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[9]
* Does not include derivatives, except purchased options, if any.  
[10]
† Certain categories may represent less than 0.1%.
[11]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[12]
2 Includes non-recurring merger related expenses. Excluding these costs, net expenses would have been 0.05%.
[13]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[14]
* Does not include derivatives, except purchased options, if any.  
[15]
† Certain categories may represent less than 0.1%.
[16]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[17]
2 Includes non-recurring merger related expenses. Excluding these costs, net expenses would have been (0.21)%.
[18]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[19]
* Does not include derivatives, except purchased options, if any.  
[20]
† Certain categories may represent less than 0.1%.
[21]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[22]
2 Includes non-recurring merger related expenses. Excluding these costs, net expenses would have been (0.36)%.
[23]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[24]
* Does not include derivatives, except purchased options, if any.  
[25]
† Certain categories may represent less than 0.1%.
[26]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[27]
2 Includes non-recurring merger related expenses. Excluding these costs, net expenses would have been (0.60)%.
[28]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[29]
* Does not include derivatives, except purchased options, if any.  
[30]
† Certain categories may represent less than 0.1%.
[31]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[32]
2 Includes non-recurring merger related expenses. Excluding these costs, net expenses would have been (0.28)%.
[33]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[34]
* Does not include derivatives, except purchased options, if any.  
[35]
† Certain categories may represent less than 0.1%.
[36]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[37]
2 Includes non-recurring merger related expenses. Excluding these costs, net expenses would have been (0.35)%.
[38]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[39]
* Does not include derivatives, except purchased options, if any.  
[40]
† Certain categories may represent less than 0.1%.
[41]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[42]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[43]
* Does not include derivatives, except purchased options, if any.  
[44]
† Certain categories may represent less than 0.1%.
[45]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[46]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[47]
* Does not include derivatives, except purchased options, if any.  
[48]
† Certain categories may represent less than 0.1%.
[49]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[50]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[51]
* Does not include derivatives, except purchased options, if any.  
[52]
† Certain categories may represent less than 0.1%.
[53]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[54]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[55]
* Does not include derivatives, except purchased options, if any.  
[56]
† Certain categories may represent less than 0.1%.
[57]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[58]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[59]
* Does not include derivatives, except purchased options, if any.  
[60]
† Certain categories may represent less than 0.1%.
[61]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[62]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[63]
* Does not include derivatives, except purchased options, if any.  
[64]
† Certain categories may represent less than 0.1%.
[65]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[66]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[67]
* Does not include derivatives, except purchased options, if any.  
[68]
† Certain categories may represent less than 0.1%.
[69]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[70]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[71]
* Does not include derivatives, except purchased options, if any.  
[72]
† Certain categories may represent less than 0.1%.
[73]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[74]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[75]
* Does not include derivatives, except purchased options, if any.  
[76]
† Certain categories may represent less than 0.1%.
[77]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[78]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[79]
* Does not include derivatives, except purchased options, if any.  
[80]
† Certain categories may represent less than 0.1%.
[81]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[82]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[83]
* Does not include derivatives, except purchased options, if any.  
[84]
† Certain categories may represent less than 0.1%.
[85]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[86]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[87]
* Does not include derivatives, except purchased options, if any.  
[88]
† Certain categories may represent less than 0.1%.
[89]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[90]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[91]
* Does not include derivatives, except purchased options, if any.  
[92]
† Certain categories may represent less than 0.1%.
[93]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[94]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[95]
* Does not include derivatives, except purchased options, if any.  
[96]
† Certain categories may represent less than 0.1%.
[97]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[98]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[99]
* Does not include derivatives, except purchased options, if any.  
[100]
† Certain categories may represent less than 0.1%.
[101]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[102]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[103]
* Does not include derivatives, except purchased options, if any.  
[104]
† Certain categories may represent less than 0.1%.
[105]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[106]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[107]
* Does not include derivatives, except purchased options, if any.  
[108]
† Certain categories may represent less than 0.1%.
[109]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[110]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[111]
* Does not include derivatives, except purchased options, if any.  
[112]
† Certain categories may represent less than 0.1%.
[113]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[114]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[115]
* Does not include derivatives, except purchased options, if any.  
[116]
† Certain categories may represent less than 0.1%.
[117]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[118]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[119]
* Does not include derivatives, except purchased options, if any.  
[120]
† Certain categories may represent less than 0.1%.
[121]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[122]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[123]
* Does not include derivatives, except purchased options, if any.  
[124]
† Certain categories may represent less than 0.1%.
[125]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[126]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[127]
* Does not include derivatives, except purchased options, if any.  
[128]
† Certain categories may represent less than 0.1%.
[129]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[130]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[131]
* Does not include derivatives, except purchased options, if any.  
[132]
† Certain categories may represent less than 0.1%.
[133]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[134]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[135]
* Does not include derivatives, except purchased options, if any.  
[136]
† Certain categories may represent less than 0.1%.
[137]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[138]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[139]
* Does not include derivatives, except purchased options, if any.  
[140]
† Certain categories may represent less than 0.1%.
[141]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[142]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[143]
* Does not include derivatives, except purchased options, if any.  
[144]
† Certain categories may represent less than 0.1%.
[145]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[146]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[147]
* Does not include derivatives, except purchased options, if any.  
[148]
† Certain categories may represent less than 0.1%.
[149]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[150]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[151]
* Does not include derivatives, except purchased options, if any.  
[152]
† Certain categories may represent less than 0.1%.
[153]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[154]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[155]
* Does not include derivatives, except purchased options, if any.  
[156]
† Certain categories may represent less than 0.1%.
[157]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[158]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[159]
* Does not include derivatives, except purchased options, if any.  
[160]
† Certain categories may represent less than 0.1%.
[161]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[162]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[163]
* Does not include derivatives, except purchased options, if any.  
[164]
† Certain categories may represent less than 0.1%.
[165]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[166]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[167]
* Does not include derivatives, except purchased options, if any.  
[168]
† Certain categories may represent less than 0.1%.
[169]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[170]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[171]
* Does not include derivatives, except purchased options, if any.  
[172]
† Certain categories may represent less than 0.1%.
[173]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[174]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[175]
* Does not include derivatives, except purchased options, if any.  
[176]
† Certain categories may represent less than 0.1%.
[177]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[178]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[179]
* Does not include derivatives, except purchased options, if any.  
[180]
† Certain categories may represent less than 0.1%.
[181]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[182]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[183]
* Does not include derivatives, except purchased options, if any.  
[184]
† Certain categories may represent less than 0.1%.
[185]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[186]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[187]
* Does not include derivatives, except purchased options, if any.  
[188]
† Certain categories may represent less than 0.1%.
[189]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[190]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[191]
* Does not include derivatives, except purchased options, if any.  
[192]
† Certain categories may represent less than 0.1%.
[193]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[194]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[195]
* Does not include derivatives, except purchased options, if any.  
[196]
† Certain categories may represent less than 0.1%.
[197]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[198]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[199]
* Does not include derivatives, except purchased options, if any.  
[200]
† Certain categories may represent less than 0.1%.
[201]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[202]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[203]
* Does not include derivatives, except purchased options, if any.  
[204]
† Certain categories may represent less than 0.1%.
[205]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[206]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[207]
* Does not include derivatives, except purchased options, if any.  
[208]
† Certain categories may represent less than 0.1%.
[209]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[210]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[211]
* Does not include derivatives, except purchased options, if any.  
[212]
† Certain categories may represent less than 0.1%.
[213]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[214]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[215]
* Does not include derivatives, except purchased options, if any.  
[216]
† Certain categories may represent less than 0.1%.
[217]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[218]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[219]
* Does not include derivatives, except purchased options, if any.  
[220]
† Certain categories may represent less than 0.1%.
[221]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[222]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[223]
* Does not include derivatives, except purchased options, if any.  
[224]
† Certain categories may represent less than 0.1%.
[225]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[226]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[227]
* Does not include derivatives, except purchased options, if any.  
[228]
† Certain categories may represent less than 0.1%.
[229]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[230]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[231]
* Does not include derivatives, except purchased options, if any.  
[232]
† Certain categories may represent less than 0.1%.
[233]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[234]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[235]
* Does not include derivatives, except purchased options, if any.  
[236]
† Certain categories may represent less than 0.1%.
[237]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[238]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[239]
* Does not include derivatives, except purchased options, if any.  
[240]
† Certain categories may represent less than 0.1%.
[241]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[242]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[243]
* Does not include derivatives, except purchased options, if any.  
[244]
† Certain categories may represent less than 0.1%.
[245]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[246]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[247]
* Does not include derivatives, except purchased options, if any.  
[248]
† Certain categories may represent less than 0.1%.
[249]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[250]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[251]
* Does not include derivatives, except purchased options, if any.  
[252]
† Certain categories may represent less than 0.1%.
[253]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[254]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[255]
* Does not include derivatives, except purchased options, if any.  
[256]
† Certain categories may represent less than 0.1%.
[257]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[258]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[259]
* Does not include derivatives, except purchased options, if any.  
[260]
† Certain categories may represent less than 0.1%.
[261]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[262]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[263]
* Does not include derivatives, except purchased options, if any.  
[264]
† Certain categories may represent less than 0.1%.
[265]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[266]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[267]
* Does not include derivatives, except purchased options, if any.  
[268]
† Certain categories may represent less than 0.1%.
[269]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[270]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[271]
* Does not include derivatives, except purchased options, if any.  
[272]
† Certain categories may represent less than 0.1%.
[273]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[274]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[275]
* Does not include derivatives, except purchased options, if any.  
[276]
† Certain categories may represent less than 0.1%.
[277]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[278]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[279]
* Does not include derivatives, except purchased options, if any.  
[280]
† Certain categories may represent less than 0.1%.
[281]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[282]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[283]
* Does not include derivatives, except purchased options, if any.  
[284]
† Certain categories may represent less than 0.1%.
[285]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[286]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[287]
* Does not include derivatives, except purchased options, if any.  
[288]
† Certain categories may represent less than 0.1%.
[289]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[290]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[291]
* Does not include derivatives, except purchased options, if any.  
[292]
† Certain categories may represent less than 0.1%.
[293]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[294]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[295]
* Does not include derivatives, except purchased options, if any.  
[296]
† Certain categories may represent less than 0.1%.
[297]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[298]
2 Amounts are for the period August 1, 2025 through August 31, 2025. Expenses for the full reporting period would have been higher.
[299]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[300]
* Does not include derivatives, except purchased options, if any.  
[301]
† Certain categories may represent less than 0.1%.
[302]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[303]
2 Amounts are for the period August 1, 2025 through August 31, 2025. Expenses for the full reporting period would have been higher.
[304]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[305]
* Does not include derivatives, except purchased options, if any.  
[306]
† Certain categories may represent less than 0.1%.
[307]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[308]
2 Amounts are for the period August 1, 2025 through August 31, 2025. Expenses for the full reporting period would have been higher.
[309]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[310]
* Does not include derivatives, except purchased options, if any.  
[311]
† Certain categories may represent less than 0.1%.
[312]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[313]
2 Amounts are for the period August 1, 2025 through August 31, 2025. Expenses for the full reporting period would have been higher.
[314]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[315]
* Does not include derivatives, except purchased options, if any.  
[316]
† Certain categories may represent less than 0.1%.
[317]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[318]
2 Amounts are for the period August 1, 2025 through August 31, 2025. Expenses for the full reporting period would have been higher.
[319]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[320]
* Does not include derivatives, except purchased options, if any.  
[321]
† Certain categories may represent less than 0.1%.
[322]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[323]
2 Amounts are for the period August 1, 2025 through August 31, 2025. Expenses for the full reporting period would have been higher.
[324]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[325]
* Does not include derivatives, except purchased options, if any.  
[326]
† Certain categories may represent less than 0.1%.
[327]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[328]
2 Amounts are for the period August 1, 2025 through August 31, 2025. Expenses for the full reporting period would have been higher.
[329]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[330]
* Does not include derivatives, except purchased options, if any.  
[331]
† Certain categories may represent less than 0.1%.
[332]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[333]
2 Amounts are for the period August 1, 2025 through August 31, 2025. Expenses for the full reporting period would have been higher.
[334]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[335]
* Does not include derivatives, except purchased options, if any.  
[336]
† Certain categories may represent less than 0.1%.