v3.26.3
Shareholder Report, Line Graph (Details) 74200181800_Franklin Retirement Advantage 2065 Fund_Class A_TSR Annual {Class A} - USD ($)
12 Months Ended
Aug. 31, 2025
Aug. 31, 2024
Aug. 31, 2023
Aug. 31, 2022
Aug. 31, 2021
Dec. 30, 2020
Aug. 31, 2026
Class A              
Account Value [Line Items]              
Line Graph and Table Measure Name             Class A (with sales charge)
Accumulated Value $ 16,109 $ 13,992 $ 10,877 $ 9,412 $ 11,197 $ 9,425 $ 19,389
Russell 3000 Index [Member]              
Account Value [Line Items]              
Line Graph and Table Measure Name             Russell 3000 Index
Accumulated Value 17,507 15,113 11,981 10,440 12,039 10,000 $ 21,027
Bloomberg U.S. Aggregate Index [Member]              
Account Value [Line Items]              
Line Graph and Table Measure Name             Bloomberg U.S. Aggregate Index
Accumulated Value 9,608 9,316 8,682 8,787 9,931 10,000 $ 9,790
S&P Target Date To 2065+ Index [Member]              
Account Value [Line Items]              
Line Graph and Table Measure Name             S&P Target Date To 2065+ Index
Accumulated Value $ 15,562 $ 13,726 $ 11,316 $ 9,975 $ 11,537 $ 10,000 $ 18,702