XML 96 R2.htm IDEA: XBRL DOCUMENT v3.25.1
Shareholder Report
 6 Months Ended
Jan. 31, 2025
USD ($)
$ / shares
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Putnam Target Date Funds
Entity Central Index Key 0001295293
Entity Investment Company Type N-1A
Document Period End Date Jan. 31, 2025
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2065 Fund
Class Name Class A
Trading Symbol PCJQX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2065 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$15
0.28%
[1],[2],[3]
Expenses Paid, Amount $ 15 [1]
Expense Ratio, Percent 0.28% [1]
Net Assets $ 955,233
Holdings Count | $ / shares 8 [4]
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$955,233
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
11%
[4]
Holdings [Text Block]
image
 [5]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2065 Fund
Class Name Class C
Trading Symbol PCJRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2065 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$53
1.03%
[6],[7],[8]
Expenses Paid, Amount $ 53 [6]
Expense Ratio, Percent 1.03% [6]
Net Assets $ 955,233
Holdings Count | $ / shares 8 [9]
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$955,233
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
11%
[9]
Holdings [Text Block]
image
 [10]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2065 Fund
Class Name Class R
Trading Symbol PCJUX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2065 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$35
0.68%
[11],[12],[13]
Expenses Paid, Amount $ 35 [11]
Expense Ratio, Percent 0.68% [11]
Net Assets $ 955,233
Holdings Count | $ / shares 8 [14]
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$955,233
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
11%
[14]
Holdings [Text Block]
image
 [15]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2065 Fund
Class Name Class R3
Trading Symbol PCJVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2065 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$22
0.43%
[16],[17],[18]
Expenses Paid, Amount $ 22 [16]
Expense Ratio, Percent 0.43% [16]
Net Assets $ 955,233
Holdings Count | $ / shares 8 [19]
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$955,233
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
11%
[19]
Holdings [Text Block]
image
 [20]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2065 Fund
Class Name Class R4
Trading Symbol PCJWX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2065 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.18%
[21],[22],[23]
Expenses Paid, Amount $ 9 [21]
Expense Ratio, Percent 0.18% [21]
Net Assets $ 955,233
Holdings Count | $ / shares 8 [24]
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$955,233
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
11%
[24]
Holdings [Text Block]
image
 [25]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2065 Fund
Class Name Class R5
Trading Symbol PCJIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2065 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.03%
[26],[27],[28]
Expenses Paid, Amount $ 2 [26]
Expense Ratio, Percent 0.03% [26]
Net Assets $ 955,233
Holdings Count | $ / shares 8 [29]
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$955,233
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
11%
[29]
Holdings [Text Block]
image
 [30]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2065 Fund
Class Name Class R6
Trading Symbol PCJYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2065 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
-$4
-0.07%
[31],[32],[33]
Expenses Paid, Amount $ (4) [31]
Expense Ratio, Percent (0.07%) [31]
Net Assets $ 955,233
Holdings Count | $ / shares 8 [34]
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$955,233
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
11%
[34]
Holdings [Text Block]
image
 [35]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2065 Fund
Class Name Class Y
Trading Symbol PCJSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2065 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.03%
[36],[37],[38]
Expenses Paid, Amount $ 2 [36]
Expense Ratio, Percent 0.03% [36]
Net Assets $ 955,233
Holdings Count | $ / shares 8 [39]
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$955,233
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
11%
[39]
Holdings [Text Block]
image
 [40]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2060 Fund
Class Name Class A
Trading Symbol PRTFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2060 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$14
0.28%
[41],[42],[43]
Expenses Paid, Amount $ 14 [41]
Expense Ratio, Percent 0.28% [41]
Net Assets $ 57,224,817
Holdings Count | $ / shares 8 [44]
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$57,224,817
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
9%
[44]
Holdings [Text Block]
image
 [45]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2060 Fund
Class Name Class C
No Trading Symbol true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2060 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$53
1.03%
[46],[47],[48]
Expenses Paid, Amount $ 53 [46]
Expense Ratio, Percent 1.03% [46]
Net Assets $ 57,224,817
Holdings Count | $ / shares 8 [49]
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$57,224,817
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
9%
[49]
Holdings [Text Block]
image
 [50]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2060 Fund
Class Name Class R
Trading Symbol PRTRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2060 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$35
0.68%
[51],[52],[53]
Expenses Paid, Amount $ 35 [51]
Expense Ratio, Percent 0.68% [51]
Net Assets $ 57,224,817
Holdings Count | $ / shares 8 [54]
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$57,224,817
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
9%
[54]
Holdings [Text Block]
image
 [55]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2060 Fund
Class Name Class R3
Trading Symbol PAEVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2060 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$22
0.43%
[56],[57],[58]
Expenses Paid, Amount $ 22 [56]
Expense Ratio, Percent 0.43% [56]
Net Assets $ 57,224,817
Holdings Count | $ / shares 8 [59]
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$57,224,817
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
9%
[59]
Holdings [Text Block]
image
 [60]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2060 Fund
Class Name Class R4
Trading Symbol PAEUX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2060 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.18%
[61],[62],[63]
Expenses Paid, Amount $ 9 [61]
Expense Ratio, Percent 0.18% [61]
Net Assets $ 57,224,817
Holdings Count | $ / shares 8 [64]
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$57,224,817
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
9%
[64]
Holdings [Text Block]
image
 [65]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2060 Fund
Class Name Class R5
Trading Symbol PAEWX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2060 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.03%
[66],[67],[68]
Expenses Paid, Amount $ 2 [66]
Expense Ratio, Percent 0.03% [66]
Net Assets $ 57,224,817
Holdings Count | $ / shares 8 [69]
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$57,224,817
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
9%
[69]
Holdings [Text Block]
image
 [70]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2060 Fund
Class Name Class R6
Trading Symbol PEFGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2060 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
-$4
-0.07%
[71],[72],[73]
Expenses Paid, Amount $ (4) [71]
Expense Ratio, Percent (0.07%) [71]
Net Assets $ 57,224,817
Holdings Count | $ / shares 8 [74]
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$57,224,817
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
9%
[74]
Holdings [Text Block]
image
 [75]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2060 Fund
Class Name Class Y
Trading Symbol PRTYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2060 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.03%
[76],[77],[78]
Expenses Paid, Amount $ 2 [76]
Expense Ratio, Percent 0.03% [76]
Net Assets $ 57,224,817
Holdings Count | $ / shares 8 [79]
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$57,224,817
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
9%
[79]
Holdings [Text Block]
image
 [80]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2055 Fund
Class Name Class A
Trading Symbol PRRFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2055 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$15
0.29%
[81],[82],[83]
Expenses Paid, Amount $ 15 [81]
Expense Ratio, Percent 0.29% [81]
Net Assets $ 131,501,884
Holdings Count | $ / shares 8 [84]
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$131,501,884
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
5%
[84]
Holdings [Text Block]
image
 [85]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2055 Fund
Class Name Class C
No Trading Symbol true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2055 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$54
1.04%
[86],[87],[88]
Expenses Paid, Amount $ 54 [86]
Expense Ratio, Percent 1.04% [86]
Net Assets $ 131,501,884
Holdings Count | $ / shares 8 [89]
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$131,501,884
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
5%
[89]
Holdings [Text Block]
image
 [90]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2055 Fund
Class Name Class R
Trading Symbol PRRVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2055 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$36
0.69%
[91],[92],[93]
Expenses Paid, Amount $ 36 [91]
Expense Ratio, Percent 0.69% [91]
Net Assets $ 131,501,884
Holdings Count | $ / shares 8 [94]
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$131,501,884
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
5%
[94]
Holdings [Text Block]
image
 [95]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2055 Fund
Class Name Class R3
Trading Symbol PAEOX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2055 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$23
0.44%
[96],[97],[98]
Expenses Paid, Amount $ 23 [96]
Expense Ratio, Percent 0.44% [96]
Net Assets $ 131,501,884
Holdings Count | $ / shares 8 [99]
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$131,501,884
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
5%
[99]
Holdings [Text Block]
image
 [100]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2055 Fund
Class Name Class R4
Trading Symbol PAEPX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2055 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.19%
[101],[102],[103]
Expenses Paid, Amount $ 10 [101]
Expense Ratio, Percent 0.19% [101]
Net Assets $ 131,501,884
Holdings Count | $ / shares 8 [104]
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$131,501,884
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
5%
[104]
Holdings [Text Block]
image
 [105]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2055 Fund
Class Name Class R5
Trading Symbol PAESX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2055 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.04%
[106],[107],[108]
Expenses Paid, Amount $ 2 [106]
Expense Ratio, Percent 0.04% [106]
Net Assets $ 131,501,884
Holdings Count | $ / shares 8 [109]
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$131,501,884
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
5%
[109]
Holdings [Text Block]
image
 [110]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2055 Fund
Class Name Class R6
Trading Symbol PREVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2055 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
-$3
-0.06%
[111],[112],[113]
Expenses Paid, Amount $ (3) [111]
Expense Ratio, Percent (0.06%) [111]
Net Assets $ 131,501,884
Holdings Count | $ / shares 8 [114]
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$131,501,884
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
5%
[114]
Holdings [Text Block]
image
 [115]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2055 Fund
Class Name Class Y
Trading Symbol PRTLX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2055 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.04%
[116],[117],[118]
Expenses Paid, Amount $ 2 [116]
Expense Ratio, Percent 0.04% [116]
Net Assets $ 131,501,884
Holdings Count | $ / shares 8 [119]
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$131,501,884
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
5%
[119]
Holdings [Text Block]
image
 [120]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2050 Fund
Class Name Class A
Trading Symbol PRRJX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2050 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$15
0.30%
[121],[122],[123]
Expenses Paid, Amount $ 15 [121]
Expense Ratio, Percent 0.30% [121]
Net Assets $ 209,023,108
Holdings Count | $ / shares 8 [124]
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$209,023,108
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
7%
[124]
Holdings [Text Block]
image
 [125]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2050 Fund
Class Name Class C
No Trading Symbol true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2050 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$54
1.05%
[126],[127],[128]
Expenses Paid, Amount $ 54 [126]
Expense Ratio, Percent 1.05% [126]
Net Assets $ 209,023,108
Holdings Count | $ / shares 8 [129]
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$209,023,108
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
7%
[129]
Holdings [Text Block]
image
 [130]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2050 Fund
Class Name Class R
Trading Symbol PRRKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2050 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$36
0.70%
[131],[132],[133]
Expenses Paid, Amount $ 36 [131]
Expense Ratio, Percent 0.70% [131]
Net Assets $ 209,023,108
Holdings Count | $ / shares 8 [134]
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$209,023,108
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
7%
[134]
Holdings [Text Block]
image
 [135]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2050 Fund
Class Name Class R3
Trading Symbol PADWX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2050 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$23
0.45%
[136],[137],[138]
Expenses Paid, Amount $ 23 [136]
Expense Ratio, Percent 0.45% [136]
Net Assets $ 209,023,108
Holdings Count | $ / shares 8 [139]
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$209,023,108
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
7%
[139]
Holdings [Text Block]
image
 [140]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2050 Fund
Class Name Class R4
Trading Symbol PAEHX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2050 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.20%
[141],[142],[143]
Expenses Paid, Amount $ 10 [141]
Expense Ratio, Percent 0.20% [141]
Net Assets $ 209,023,108
Holdings Count | $ / shares 8 [144]
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$209,023,108
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
7%
[144]
Holdings [Text Block]
image
 [145]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2050 Fund
Class Name Class R5
Trading Symbol PAEJX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2050 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.05%
[146],[147],[148]
Expenses Paid, Amount $ 3 [146]
Expense Ratio, Percent 0.05% [146]
Net Assets $ 209,023,108
Holdings Count | $ / shares 8 [149]
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$209,023,108
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
7%
[149]
Holdings [Text Block]
image
 [150]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2050 Fund
Class Name Class R6
Trading Symbol PREUX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2050 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
-$3
-0.05%
[151],[152],[153]
Expenses Paid, Amount $ (3) [151]
Expense Ratio, Percent (0.05%) [151]
Net Assets $ 209,023,108
Holdings Count | $ / shares 8 [154]
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$209,023,108
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
7%
[154]
Holdings [Text Block]
image
 [155]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2050 Fund
Class Name Class Y
Trading Symbol PRRUX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2050 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.05%
[156],[157],[158]
Expenses Paid, Amount $ 3 [156]
Expense Ratio, Percent 0.05% [156]
Net Assets $ 209,023,108
Holdings Count | $ / shares 8 [159]
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$209,023,108
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
7%
[159]
Holdings [Text Block]
image
 [160]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2045 Fund
Class Name Class A
Trading Symbol PRVLX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2045 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$16
0.31%
[161],[162],[163]
Expenses Paid, Amount $ 16 [161]
Expense Ratio, Percent 0.31% [161]
Net Assets $ 273,786,446
Holdings Count | $ / shares 8 [164]
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$273,786,446
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
6%
[164]
Holdings [Text Block]
image
 [165]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2045 Fund
Class Name Class C
No Trading Symbol true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2045 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$55
1.06%
[166],[167],[168]
Expenses Paid, Amount $ 55 [166]
Expense Ratio, Percent 1.06% [166]
Net Assets $ 273,786,446
Holdings Count | $ / shares 8 [169]
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$273,786,446
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
6%
[169]
Holdings [Text Block]
image
 [170]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2045 Fund
Class Name Class R
No Trading Symbol true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2045 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$37
0.71%
[171],[172],[173]
Expenses Paid, Amount $ 37 [171]
Expense Ratio, Percent 0.71% [171]
Net Assets $ 273,786,446
Holdings Count | $ / shares 8 [174]
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$273,786,446
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
6%
[174]
Holdings [Text Block]
image
 [175]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2045 Fund
Class Name Class R3
Trading Symbol PACGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2045 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$24
0.46%
[176],[177],[178]
Expenses Paid, Amount $ 24 [176]
Expense Ratio, Percent 0.46% [176]
Net Assets $ 273,786,446
Holdings Count | $ / shares 8 [179]
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$273,786,446
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
6%
[179]
Holdings [Text Block]
image
 [180]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2045 Fund
Class Name Class R4
Trading Symbol PACFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2045 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.21%
[181],[182],[183]
Expenses Paid, Amount $ 11 [181]
Expense Ratio, Percent 0.21% [181]
Net Assets $ 273,786,446
Holdings Count | $ / shares 8 [184]
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$273,786,446
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
6%
[184]
Holdings [Text Block]
image
 [185]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2045 Fund
Class Name Class R5
Trading Symbol PACHX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2045 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.06%
[186],[187],[188]
Expenses Paid, Amount $ 3 [186]
Expense Ratio, Percent 0.06% [186]
Net Assets $ 273,786,446
Holdings Count | $ / shares 8 [189]
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$273,786,446
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
6%
[189]
Holdings [Text Block]
image
 [190]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2045 Fund
Class Name Class R6
Trading Symbol PREKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2045 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
-0.04%
[191],[192],[193]
Expenses Paid, Amount $ (2) [191]
Expense Ratio, Percent (0.04%) [191]
Net Assets $ 273,786,446
Holdings Count | $ / shares 8 [194]
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$273,786,446
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
6%
[194]
Holdings [Text Block]
image
 [195]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2045 Fund
Class Name Class Y
Trading Symbol PRVYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2045 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.06%
[196],[197],[198]
Expenses Paid, Amount $ 3 [196]
Expense Ratio, Percent 0.06% [196]
Net Assets $ 273,786,446
Holdings Count | $ / shares 8 [199]
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$273,786,446
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
6%
[199]
Holdings [Text Block]
image
 [200]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2040 Fund
Class Name Class A
Trading Symbol PRRZX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2040 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$17
0.33%
[201],[202],[203]
Expenses Paid, Amount $ 17 [201]
Expense Ratio, Percent 0.33% [201]
Net Assets $ 343,214,944
Holdings Count | $ / shares 8 [204]
Investment Company Portfolio Turnover 4.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$343,214,944
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
4%
[204]
Holdings [Text Block]
image
 [205]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2040 Fund
Class Name Class C
No Trading Symbol true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2040 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$56
1.08%
[206],[207],[208]
Expenses Paid, Amount $ 56 [206]
Expense Ratio, Percent 1.08% [206]
Net Assets $ 343,214,944
Holdings Count | $ / shares 8 [209]
Investment Company Portfolio Turnover 4.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$343,214,944
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
4%
[209]
Holdings [Text Block]
image
 [210]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2040 Fund
Class Name Class R
No Trading Symbol true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2040 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$38
0.73%
[211],[212],[213]
Expenses Paid, Amount $ 38 [211]
Expense Ratio, Percent 0.73% [211]
Net Assets $ 343,214,944
Holdings Count | $ / shares 8 [214]
Investment Company Portfolio Turnover 4.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$343,214,944
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
4%
[214]
Holdings [Text Block]
image
 [215]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2040 Fund
Class Name Class R3
Trading Symbol PAAUX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2040 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$25
0.48%
[216],[217],[218]
Expenses Paid, Amount $ 25 [216]
Expense Ratio, Percent 0.48% [216]
Net Assets $ 343,214,944
Holdings Count | $ / shares 8 [219]
Investment Company Portfolio Turnover 4.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$343,214,944
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
4%
[219]
Holdings [Text Block]
image
 [220]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2040 Fund
Class Name Class R4
Trading Symbol PAAYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2040 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$12
0.23%
[221],[222],[223]
Expenses Paid, Amount $ 12 [221]
Expense Ratio, Percent 0.23% [221]
Net Assets $ 343,214,944
Holdings Count | $ / shares 8 [224]
Investment Company Portfolio Turnover 4.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$343,214,944
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
4%
[224]
Holdings [Text Block]
image
 [225]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2040 Fund
Class Name Class R5
Trading Symbol PABTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2040 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$4
0.08%
[226],[227],[228]
Expenses Paid, Amount $ 4 [226]
Expense Ratio, Percent 0.08% [226]
Net Assets $ 343,214,944
Holdings Count | $ / shares 8 [229]
Investment Company Portfolio Turnover 4.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$343,214,944
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
4%
[229]
Holdings [Text Block]
image
 [230]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2040 Fund
Class Name Class R6
Trading Symbol PREHX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2040 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
-$1
-0.02%
[231],[232],[233]
Expenses Paid, Amount $ (1) [231]
Expense Ratio, Percent (0.02%) [231]
Net Assets $ 343,214,944
Holdings Count | $ / shares 8 [234]
Investment Company Portfolio Turnover 4.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$343,214,944
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
4%
[234]
Holdings [Text Block]
image
 [235]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2040 Fund
Class Name Class Y
Trading Symbol PRZZX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2040 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$4
0.08%
[236],[237],[238]
Expenses Paid, Amount $ 4 [236]
Expense Ratio, Percent 0.08% [236]
Net Assets $ 343,214,944
Holdings Count | $ / shares 8 [239]
Investment Company Portfolio Turnover 4.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$343,214,944
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
4%
[239]
Holdings [Text Block]
image
 [240]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2035 Fund
Class Name Class A
Trading Symbol PRRWX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2035 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$18
0.36%
[241],[242],[243]
Expenses Paid, Amount $ 18 [241]
Expense Ratio, Percent 0.36% [241]
Net Assets $ 333,173,514
Holdings Count | $ / shares 8 [244]
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$333,173,514
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
8%
[244]
Holdings [Text Block]
image
 [245]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2035 Fund
Class Name Class C
No Trading Symbol true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2035 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$57
1.11%
[246],[247],[248]
Expenses Paid, Amount $ 57 [246]
Expense Ratio, Percent 1.11% [246]
Net Assets $ 333,173,514
Holdings Count | $ / shares 8 [249]
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$333,173,514
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
8%
[249]
Holdings [Text Block]
image
 [250]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2035 Fund
Class Name Class R
No Trading Symbol true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2035 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$39
0.76%
[251],[252],[253]
Expenses Paid, Amount $ 39 [251]
Expense Ratio, Percent 0.76% [251]
Net Assets $ 333,173,514
Holdings Count | $ / shares 8 [254]
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$333,173,514
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
8%
[254]
Holdings [Text Block]
image
 [255]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2035 Fund
Class Name Class R3
Trading Symbol PADUX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2035 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$26
0.51%
[256],[257],[258]
Expenses Paid, Amount $ 26 [256]
Expense Ratio, Percent 0.51% [256]
Net Assets $ 333,173,514
Holdings Count | $ / shares 8 [259]
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$333,173,514
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
8%
[259]
Holdings [Text Block]
image
 [260]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2035 Fund
Class Name Class R4
Trading Symbol PADSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2035 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.26%
[261],[262],[263]
Expenses Paid, Amount $ 13 [261]
Expense Ratio, Percent 0.26% [261]
Net Assets $ 333,173,514
Holdings Count | $ / shares 8 [264]
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$333,173,514
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
8%
[264]
Holdings [Text Block]
image
 [265]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2035 Fund
Class Name Class R5
Trading Symbol PADVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2035 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.11%
[266],[267],[268]
Expenses Paid, Amount $ 6 [266]
Expense Ratio, Percent 0.11% [266]
Net Assets $ 333,173,514
Holdings Count | $ / shares 8 [269]
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$333,173,514
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
8%
[269]
Holdings [Text Block]
image
 [270]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2035 Fund
Class Name Class R6
Trading Symbol PREGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2035 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$1
0.01%
[271],[272],[273]
Expenses Paid, Amount $ 1 [271]
Expense Ratio, Percent 0.01% [271]
Net Assets $ 333,173,514
Holdings Count | $ / shares 8 [274]
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$333,173,514
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
8%
[274]
Holdings [Text Block]
image
 [275]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2035 Fund
Class Name Class Y
Trading Symbol PRRYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2035 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.11%
[276],[277],[278]
Expenses Paid, Amount $ 6 [276]
Expense Ratio, Percent 0.11% [276]
Net Assets $ 333,173,514
Holdings Count | $ / shares 8 [279]
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$333,173,514
Total Number of Portfolio Holdings*
8
Portfolio Turnover Rate
8%
[279]
Holdings [Text Block]
image
 [280]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2030 Fund
Class Name Class A
Trading Symbol PRRQX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2030 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.41%
[281],[282],[283]
Expenses Paid, Amount $ 21 [281]
Expense Ratio, Percent 0.41% [281]
Net Assets $ 356,055,277
Holdings Count | $ / shares 7 [284]
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$356,055,277
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
7%
[284]
Holdings [Text Block]
image
 [285]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2030 Fund
Class Name Class C
No Trading Symbol true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2030 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$59
1.16%
[286],[287],[288]
Expenses Paid, Amount $ 59 [286]
Expense Ratio, Percent 1.16% [286]
Net Assets $ 356,055,277
Holdings Count | $ / shares 7 [289]
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$356,055,277
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
7%
[289]
Holdings [Text Block]
image
 [290]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2030 Fund
Class Name Class R
No Trading Symbol true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2030 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$41
0.81%
[291],[292],[293]
Expenses Paid, Amount $ 41 [291]
Expense Ratio, Percent 0.81% [291]
Net Assets $ 356,055,277
Holdings Count | $ / shares 7 [294]
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$356,055,277
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
7%
[294]
Holdings [Text Block]
image
 [295]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2030 Fund
Class Name Class R3
Trading Symbol PADOX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2030 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$29
0.56%
[296],[297],[298]
Expenses Paid, Amount $ 29 [296]
Expense Ratio, Percent 0.56% [296]
Net Assets $ 356,055,277
Holdings Count | $ / shares 7 [299]
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$356,055,277
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
7%
[299]
Holdings [Text Block]
image
 [300]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2030 Fund
Class Name Class R4
Trading Symbol PADNX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2030 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$16
0.31%
[301],[302],[303]
Expenses Paid, Amount $ 16 [301]
Expense Ratio, Percent 0.31% [301]
Net Assets $ 356,055,277
Holdings Count | $ / shares 7 [304]
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$356,055,277
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
7%
[304]
Holdings [Text Block]
image
 [305]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2030 Fund
Class Name Class R5
Trading Symbol PADRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2030 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$8
0.16%
[306],[307],[308]
Expenses Paid, Amount $ 8 [306]
Expense Ratio, Percent 0.16% [306]
Net Assets $ 356,055,277
Holdings Count | $ / shares 7 [309]
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$356,055,277
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
7%
[309]
Holdings [Text Block]
image
 [310]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2030 Fund
Class Name Class R6
Trading Symbol PREZX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2030 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$3
0.06%
[311],[312],[313]
Expenses Paid, Amount $ 3 [311]
Expense Ratio, Percent 0.06% [311]
Net Assets $ 356,055,277
Holdings Count | $ / shares 7 [314]
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$356,055,277
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
7%
[314]
Holdings [Text Block]
image
 [315]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2030 Fund
Class Name Class Y
Trading Symbol PRRTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2030 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.16%
[316],[317],[318]
Expenses Paid, Amount $ 8 [316]
Expense Ratio, Percent 0.16% [316]
Net Assets $ 356,055,277
Holdings Count | $ / shares 7 [319]
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$356,055,277
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
7%
[319]
Holdings [Text Block]
image
 [320]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2025 Fund
Class Name Class A
Trading Symbol PRROX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2025 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.42%
[321],[322],[323]
Expenses Paid, Amount $ 21 [321]
Expense Ratio, Percent 0.42% [321]
Net Assets $ 360,981,958
Holdings Count | $ / shares 7 [324]
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$360,981,958
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
6%
[324]
Holdings [Text Block]
image
 [325]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2025 Fund
Class Name Class C
No Trading Symbol true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2025 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$60
1.17%
[326],[327],[328]
Expenses Paid, Amount $ 60 [326]
Expense Ratio, Percent 1.17% [326]
Net Assets $ 360,981,958
Holdings Count | $ / shares 7 [329]
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$360,981,958
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
6%
[329]
Holdings [Text Block]
image
 [330]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2025 Fund
Class Name Class R
No Trading Symbol true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2025 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$42
0.82%
[331],[332],[333]
Expenses Paid, Amount $ 42 [331]
Expense Ratio, Percent 0.82% [331]
Net Assets $ 360,981,958
Holdings Count | $ / shares 7 [334]
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$360,981,958
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
6%
[334]
Holdings [Text Block]
image
 [335]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2025 Fund
Class Name Class R3
Trading Symbol PADHX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2025 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$29
0.57%
[336],[337],[338]
Expenses Paid, Amount $ 29 [336]
Expense Ratio, Percent 0.57% [336]
Net Assets $ 360,981,958
Holdings Count | $ / shares 7 [339]
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$360,981,958
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
6%
[339]
Holdings [Text Block]
image
 [340]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2025 Fund
Class Name Class R4
Trading Symbol PADJX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2025 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$16
0.32%
[341],[342],[343]
Expenses Paid, Amount $ 16 [341]
Expense Ratio, Percent 0.32% [341]
Net Assets $ 360,981,958
Holdings Count | $ / shares 7 [344]
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$360,981,958
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
6%
[344]
Holdings [Text Block]
image
 [345]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2025 Fund
Class Name Class R5
Trading Symbol PADKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2025 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$9
0.17%
[346],[347],[348]
Expenses Paid, Amount $ 9 [346]
Expense Ratio, Percent 0.17% [346]
Net Assets $ 360,981,958
Holdings Count | $ / shares 7 [349]
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$360,981,958
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
6%
[349]
Holdings [Text Block]
image
 [350]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2025 Fund
Class Name Class R6
Trading Symbol PRMFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2025 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$4
0.07%
[351],[352],[353]
Expenses Paid, Amount $ 4 [351]
Expense Ratio, Percent 0.07% [351]
Net Assets $ 360,981,958
Holdings Count | $ / shares 7 [354]
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$360,981,958
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
6%
[354]
Holdings [Text Block]
image
 [355]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement 2025 Fund
Class Name Class Y
Trading Symbol PRRPX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement 2025 Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$9
0.17%
[356],[357],[358]
Expenses Paid, Amount $ 9 [356]
Expense Ratio, Percent 0.17% [356]
Net Assets $ 360,981,958
Holdings Count | $ / shares 7 [359]
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$360,981,958
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
6%
[359]
Holdings [Text Block]
image
 [360]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class A  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement Maturity Fund
Class Name Class A
Trading Symbol PRMAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement Maturity Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
0.42%
[361],[362],[363]
Expenses Paid, Amount $ 21 [361]
Expense Ratio, Percent 0.42% [361]
Net Assets $ 212,004,598
Holdings Count | $ / shares 7 [364]
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$212,004,598
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
5%
[364]
Holdings [Text Block]
image
 [365]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class C  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement Maturity Fund
Class Name Class C
Trading Symbol PRMCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement Maturity Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$60
1.17%
[366],[367],[368]
Expenses Paid, Amount $ 60 [366]
Expense Ratio, Percent 1.17% [366]
Net Assets $ 212,004,598
Holdings Count | $ / shares 7 [369]
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$212,004,598
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
5%
[369]
Holdings [Text Block]
image
 [370]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement Maturity Fund
Class Name Class R
Trading Symbol PRMKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement Maturity Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$42
0.82%
[371],[372],[373]
Expenses Paid, Amount $ 42 [371]
Expense Ratio, Percent 0.82% [371]
Net Assets $ 212,004,598
Holdings Count | $ / shares 7 [374]
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$212,004,598
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
5%
[374]
Holdings [Text Block]
image
 [375]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R3  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement Maturity Fund
Class Name Class R3
Trading Symbol PACKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement Maturity Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$29
0.57%
[376],[377],[378]
Expenses Paid, Amount $ 29 [376]
Expense Ratio, Percent 0.57% [376]
Net Assets $ 212,004,598
Holdings Count | $ / shares 7 [379]
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$212,004,598
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
5%
[379]
Holdings [Text Block]
image
 [380]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R4  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement Maturity Fund
Class Name Class R4
Trading Symbol PACPX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement Maturity Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$16
0.32%
[381],[382],[383]
Expenses Paid, Amount $ 16 [381]
Expense Ratio, Percent 0.32% [381]
Net Assets $ 212,004,598
Holdings Count | $ / shares 7 [384]
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$212,004,598
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
5%
[384]
Holdings [Text Block]
image
 [385]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R5  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement Maturity Fund
Class Name Class R5
Trading Symbol PACQX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement Maturity Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$9
0.17%
[386],[387],[388]
Expenses Paid, Amount $ 9 [386]
Expense Ratio, Percent 0.17% [386]
Net Assets $ 212,004,598
Holdings Count | $ / shares 7 [389]
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$212,004,598
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
5%
[389]
Holdings [Text Block]
image
 [390]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class R6  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement Maturity Fund
Class Name Class R6
Trading Symbol PREWX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement Maturity Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$4
0.07%
[391],[392],[393]
Expenses Paid, Amount $ 4 [391]
Expense Ratio, Percent 0.07% [391]
Net Assets $ 212,004,598
Holdings Count | $ / shares 7 [394]
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$212,004,598
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
5%
[394]
Holdings [Text Block]
image
 [395]
Updated Prospectus Web Address https://www.franklintempleton.com/regulatory-fund-documents
Class Y  
Shareholder Report [Line Items]  
Fund Name Putnam Sustainable Retirement Maturity Fund
Class Name Class Y
Trading Symbol PRMYX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Putnam Sustainable Retirement Maturity Fund for the period August 1, 2024, to January 31, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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
$9
0.17%
[396],[397],[398]
Expenses Paid, Amount $ 9 [396]
Expense Ratio, Percent 0.17% [396]
Net Assets $ 212,004,598
Holdings Count | $ / shares 7 [399]
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of January 31, 2025)
Total Net Assets
$212,004,598
Total Number of Portfolio Holdings*
7
Portfolio Turnover Rate
5%
[399]
Holdings [Text Block]
image
 [400]
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]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[3]
† Annualized.
[4]
* Includes derivatives, if applicable.
[5]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[6]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[7]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[8]
† Annualized.
[9]
* Includes derivatives, if applicable.
[10]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[11]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[12]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[13]
† Annualized.
[14]
* Includes derivatives, if applicable.
[15]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[16]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[17]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[18]
† Annualized.
[19]
* Includes derivatives, if applicable.
[20]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[21]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[22]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[23]
† Annualized.
[24]
* Includes derivatives, if applicable.
[25]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[26]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[27]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[28]
† Annualized.
[29]
* Includes derivatives, if applicable.
[30]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[31]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[32]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[33]
† Annualized.
[34]
* Includes derivatives, if applicable.
[35]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[36]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[37]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[38]
† Annualized.
[39]
* Includes derivatives, if applicable.
[40]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[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]
† Annualized.
[44]
* Includes derivatives, if applicable.
[45]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[46]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[47]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[48]
† Annualized.
[49]
* Includes derivatives, if applicable.
[50]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[51]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[52]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[53]
† Annualized.
[54]
* Includes derivatives, if applicable.
[55]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[56]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[57]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[58]
† Annualized.
[59]
* Includes derivatives, if applicable.
[60]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[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]
† Annualized.
[64]
* Includes derivatives, if applicable.
[65]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[66]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[67]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[68]
† Annualized.
[69]
* Includes derivatives, if applicable.
[70]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[71]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[72]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[73]
† Annualized.
[74]
* Includes derivatives, if applicable.
[75]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[76]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[77]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[78]
† Annualized.
[79]
* Includes derivatives, if applicable.
[80]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[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]
† Annualized.
[84]
* Includes derivatives, if applicable.
[85]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[86]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[87]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[88]
† Annualized.
[89]
* Includes derivatives, if applicable.
[90]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[91]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[92]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[93]
† Annualized.
[94]
* Includes derivatives, if applicable.
[95]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[96]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[97]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[98]
† Annualized.
[99]
* Includes derivatives, if applicable.
[100]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[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]
† Annualized.
[104]
* Includes derivatives, if applicable.
[105]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[106]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[107]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[108]
† Annualized.
[109]
* Includes derivatives, if applicable.
[110]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[111]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[112]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[113]
† Annualized.
[114]
* Includes derivatives, if applicable.
[115]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[116]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[117]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[118]
† Annualized.
[119]
* Includes derivatives, if applicable.
[120]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[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]
† Annualized.
[124]
* Includes derivatives, if applicable.
[125]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[126]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[127]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[128]
† Annualized.
[129]
* Includes derivatives, if applicable.
[130]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[131]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[132]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[133]
† Annualized.
[134]
* Includes derivatives, if applicable.
[135]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[136]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[137]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[138]
† Annualized.
[139]
* Includes derivatives, if applicable.
[140]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[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]
† Annualized.
[144]
* Includes derivatives, if applicable.
[145]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[146]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[147]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[148]
† Annualized.
[149]
* Includes derivatives, if applicable.
[150]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[151]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[152]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[153]
† Annualized.
[154]
* Includes derivatives, if applicable.
[155]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[156]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[157]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[158]
† Annualized.
[159]
* Includes derivatives, if applicable.
[160]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[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]
† Annualized.
[164]
* Includes derivatives, if applicable.
[165]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[166]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[167]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[168]
† Annualized.
[169]
* Includes derivatives, if applicable.
[170]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[171]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[172]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[173]
† Annualized.
[174]
* Includes derivatives, if applicable.
[175]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[176]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[177]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[178]
† Annualized.
[179]
* Includes derivatives, if applicable.
[180]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[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]
† Annualized.
[184]
* Includes derivatives, if applicable.
[185]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[186]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[187]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[188]
† Annualized.
[189]
* Includes derivatives, if applicable.
[190]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[191]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[192]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[193]
† Annualized.
[194]
* Includes derivatives, if applicable.
[195]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[196]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[197]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[198]
† Annualized.
[199]
* Includes derivatives, if applicable.
[200]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[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]
† Annualized.
[204]
* Includes derivatives, if applicable.
[205]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[206]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[207]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[208]
† Annualized.
[209]
* Includes derivatives, if applicable.
[210]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[211]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[212]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[213]
† Annualized.
[214]
* Includes derivatives, if applicable.
[215]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[216]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[217]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[218]
† Annualized.
[219]
* Includes derivatives, if applicable.
[220]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[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]
† Annualized.
[224]
* Includes derivatives, if applicable.
[225]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[226]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[227]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[228]
† Annualized.
[229]
* Includes derivatives, if applicable.
[230]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[231]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[232]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[233]
† Annualized.
[234]
* Includes derivatives, if applicable.
[235]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[236]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[237]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[238]
† Annualized.
[239]
* Includes derivatives, if applicable.
[240]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[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]
† Annualized.
[244]
* Includes derivatives, if applicable.
[245]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[246]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[247]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[248]
† Annualized.
[249]
* Includes derivatives, if applicable.
[250]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[251]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[252]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[253]
† Annualized.
[254]
* Includes derivatives, if applicable.
[255]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[256]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[257]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[258]
† Annualized.
[259]
* Includes derivatives, if applicable.
[260]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[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]
† Annualized.
[264]
* Includes derivatives, if applicable.
[265]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[266]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[267]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[268]
† Annualized.
[269]
* Includes derivatives, if applicable.
[270]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[271]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[272]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[273]
† Annualized.
[274]
* Includes derivatives, if applicable.
[275]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[276]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[277]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[278]
† Annualized.
[279]
* Includes derivatives, if applicable.
[280]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[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]
† Annualized.
[284]
* Includes derivatives, if applicable.
[285]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[286]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[287]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[288]
† Annualized.
[289]
* Includes derivatives, if applicable.
[290]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[291]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[292]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[293]
† Annualized.
[294]
* Includes derivatives, if applicable.
[295]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[296]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[297]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[298]
† Annualized.
[299]
* Includes derivatives, if applicable.
[300]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[301]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[302]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[303]
† Annualized.
[304]
* Includes derivatives, if applicable.
[305]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[306]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[307]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[308]
† Annualized.
[309]
* Includes derivatives, if applicable.
[310]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[311]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[312]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[313]
† Annualized.
[314]
* Includes derivatives, if applicable.
[315]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[316]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[317]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[318]
† Annualized.
[319]
* Includes derivatives, if applicable.
[320]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[321]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[322]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[323]
† Annualized.
[324]
* Includes derivatives, if applicable.
[325]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[326]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[327]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[328]
† Annualized.
[329]
* Includes derivatives, if applicable.
[330]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[331]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[332]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[333]
† Annualized.
[334]
* Includes derivatives, if applicable.
[335]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[336]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[337]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[338]
† Annualized.
[339]
* Includes derivatives, if applicable.
[340]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[341]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[342]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[343]
† Annualized.
[344]
* Includes derivatives, if applicable.
[345]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[346]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[347]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[348]
† Annualized.
[349]
* Includes derivatives, if applicable.
[350]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[351]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[352]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[353]
† Annualized.
[354]
* Includes derivatives, if applicable.
[355]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[356]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[357]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[358]
† Annualized.
[359]
* Includes derivatives, if applicable.
[360]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[361]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[362]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[363]
† Annualized.
[364]
* Includes derivatives, if applicable.
[365]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[366]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[367]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[368]
† Annualized.
[369]
* Includes derivatives, if applicable.
[370]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[371]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[372]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[373]
† Annualized.
[374]
* Includes derivatives, if applicable.
[375]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[376]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[377]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[378]
† Annualized.
[379]
* Includes derivatives, if applicable.
[380]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[381]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[382]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[383]
† Annualized.
[384]
* Includes derivatives, if applicable.
[385]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[386]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[387]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[388]
† Annualized.
[389]
* Includes derivatives, if applicable.
[390]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[391]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[392]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[393]
† Annualized.
[394]
* Includes derivatives, if applicable.
[395]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.
[396]
1 Excludes fees and expenses of the underlying funds in which the Fund invests.
[397]
* Reflects waiver of fees and/or reimbursement of expenses (including acquired fund fees and expenses), without which expenses would be higher.
[398]
† Annualized.
[399]
* Includes derivatives, if applicable.
[400]
Short-Term Fund and Cash Equivalents, if any, represents temporary investments in the Putnam Government Money Market Fund and any cash or cash equivalents. Holdings and allocations may vary over time.