v3.25.4
S000000779 [Member] Expense Example - Putnam Dynamic Asset Allocation Conservative Fund
Sep. 30, 2025
USD ($)
Class P  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 61
Expense Example, with Redemption, 3 Years 192
Expense Example, with Redemption, 5 Years 335
Expense Example, with Redemption, 10 Years 750
Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 667
Expense Example, with Redemption, 3 Years 863
Expense Example, with Redemption, 5 Years 1,075
Expense Example, with Redemption, 10 Years 1,686
Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 274
Expense Example, with Redemption, 3 Years 539
Expense Example, with Redemption, 5 Years 929
Expense Example, with Redemption, 10 Years 1,821
Class R  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 123
Expense Example, with Redemption, 3 Years 384
Expense Example, with Redemption, 5 Years 665
Expense Example, with Redemption, 10 Years 1,465
Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 73
Expense Example, with Redemption, 3 Years 228
Expense Example, with Redemption, 5 Years 396
Expense Example, with Redemption, 10 Years 882
Class R5  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 72
Expense Example, with Redemption, 3 Years 225
Expense Example, with Redemption, 5 Years 391
Expense Example, with Redemption, 10 Years 871
Class R6  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 65
Expense Example, with Redemption, 3 Years 204
Expense Example, with Redemption, 5 Years 356
Expense Example, with Redemption, 10 Years $ 797