Shareholder Report, Average Annual Return (Details) 74200181400_Franklin Retirement Advantage 2055 Fund_Class A_TSR Annual {Class A}	12 Months Ended	60 Months Ended	72 Months Ended	80 Months Ended
	Aug. 31, 2026	Aug. 31, 2026	Aug. 31, 2026	Aug. 31, 2026
Class A
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Class A (with sales charge)
Average Annual Return, Percent	12.32%	9.48%	12.14%
Without Sales Load [Member] \| Class A
Average Annual Return [Line Items]
Line Graph and Table Measure Name	Class A
Average Annual Return, Percent	19.18%	10.79%		13.15%
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 2055 Index [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name	S&P Target Date To 2055 Index
Average Annual Return, Percent	19.83%	9.76%		11.54%