Shareholder Report, Line Graph (Details) 74200174400_Franklin Retirement Advantage Plus 2040 Fund_Class A_TSR Annual {Class A} - USD ($) |
12 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jul. 31, 2026 |
Jul. 31, 2025 |
Jul. 31, 2024 |
Jul. 31, 2023 |
Jul. 31, 2022 |
Jul. 31, 2021 |
Jul. 31, 2020 |
Jul. 31, 2019 |
Jul. 31, 2018 |
Jul. 31, 2017 |
Jul. 31, 2016 |
Jul. 31, 2026 |
|
| Class A | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class A (with sales charge) | |||||||||||
| Accumulated Value | $ 20,496 | $ 18,632 | $ 17,470 | $ 14,763 | $ 13,659 | $ 14,782 | $ 12,293 | $ 11,815 | $ 11,660 | $ 10,663 | $ 9,425 | |
| Russell 3000 Index [Member] | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||||||||
| Accumulated Value | 38,932 | 32,551 | 28,138 | 23,240 | 20,631 | 22,268 | 16,052 | 14,470 | 13,517 | 11,614 | 10,000 | |
| Bloomberg U.S. Aggregate Index [Member] | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||||||||||
| Accumulated Value | 11,431 | 11,130 | 10,766 | 10,243 | 10,600 | 11,664 | 11,746 | 10,666 | 9,869 | 9,949 | 10,000 | |
| S&P Target Date To 2040 Index [Member] | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | S&P Target Date To 2040 Index | |||||||||||
| Accumulated Value | $ 25,345 | $ 21,640 | $ 19,549 | $ 17,171 | $ 15,654 | $ 17,079 | $ 13,407 | $ 12,767 | $ 12,358 | $ 11,245 | $ 10,000 |