Shareholder Report, Average Annual Return (Details) 74200181200_Franklin Retirement Advantage 2045 Fund_Class R4_TSR Annual {Class R4} |
12 Months Ended | 60 Months Ended | 80 Months Ended |
|---|---|---|---|
Aug. 31, 2026 |
Aug. 31, 2026 |
Aug. 31, 2026 |
|
| Class R4 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class R4 | ||
| Average Annual Return, Percent | 17.55% | 9.74% | 11.89% |
| 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 2045 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | S&P Target Date To 2045 Index | ||
| Average Annual Return, Percent | 18.43% | 9.11% | 10.88% |