v3.26.3
JPMorgan SmartRetirement Blend 2045 Fund Expense Example - R2 R3 R4 R5 R6 Shares [Member] - JPMorgan SmartRetirement Blend 2045 Fund
Jun. 30, 2026
USD ($)
Class R2  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 94
Expense Example, with Redemption, 3 Years 353
Expense Example, with Redemption, 5 Years 633
Expense Example, with Redemption, 10 Years 1,430
Class R3  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 68
Expense Example, with Redemption, 3 Years 255
Expense Example, with Redemption, 5 Years 458
Expense Example, with Redemption, 10 Years 1,043
Class R4  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 43
Expense Example, with Redemption, 3 Years 176
Expense Example, with Redemption, 5 Years 321
Expense Example, with Redemption, 10 Years 744
Class R5  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 28
Expense Example, with Redemption, 3 Years 128
Expense Example, with Redemption, 5 Years 239
Expense Example, with Redemption, 10 Years 561
Class R6  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 17
Expense Example, with Redemption, 3 Years 96
Expense Example, with Redemption, 5 Years 183
Expense Example, with Redemption, 10 Years $ 437