Shareholder Report, Average Annual Return (Details) 74200181100_Franklin Retirement Advantage 2040 Fund_Class R5_TSR Annual {Class R5} |
12 Months Ended | 60 Months Ended | 80 Months Ended |
|---|---|---|---|
Aug. 31, 2026 |
Aug. 31, 2026 |
Aug. 31, 2026 |
|
| Class R5 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class R5 | ||
| Average Annual Return, Percent | 15.43% | 8.93% | 11.10% |
| Russell 3000 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 3000 Index | ||
| Average Annual Return, Percent | 20.10% | 11.80% | 15.02% |
| 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 | 1.89% | (0.29%) | 0.77% |
| S&P Target Date To 2040 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | S&P Target Date To 2040 Index | ||
| Average Annual Return, Percent | 16.58% | 8.23% | 10.04% |