Shareholder Report, Average Annual Return (Details) 74200198100_Franklin Retirement Advantage Plus 2070 Fund_Class R5_TSR Annual {Class R5} |
12 Months Ended |
|---|---|
Jul. 31, 2026 | |
| Class R5 | |
| Average Annual Return [Line Items] | |
| Line Graph and Table Measure Name | Class R5 |
| Average Annual Return, Percent | 14.92% |
| Russell 3000 Index [Member] | |
| Average Annual Return [Line Items] | |
| Line Graph and Table Measure Name | Russell 3000 Index |
| Average Annual Return, Percent | 21.60% |
| Bloomberg U.S. Aggregate Index [Member] | |
| Average Annual Return [Line Items] | |
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index |
| Average Annual Return, Percent | 1.88% |
| S&P Target Date To 2065+ Index [Member] | |
| Average Annual Return [Line Items] | |
| Line Graph and Table Measure Name | S&P Target Date To 2065+ Index |
| Average Annual Return, Percent | 21.94% |