Shareholder Report, Average Annual Return (Details) 74300185600_Franklin Multi-Asset Income Fund_Class A_TSR Annual {Class A}

12 Months Ended

43 Months Ended

60 Months Ended

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

5.07%

4.13%

3.13%

Without Sales Load [Member] | Class A

Average Annual Return [Line Items]

Line Graph and Table Measure Name

Class A

Average Annual Return, Percent

9.45%

4.77%

3.97%

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%

0.77%

(0.29%)

Franklin Multi-Asset Income Blended Benchmark [Member]

Average Annual Return [Line Items]

Line Graph and Table Measure Name

Franklin Multi-Asset Income Blended Benchmark

Average Annual Return, Percent

^[1]

7.55%

5.24%

4.01%

[1]

†	The Franklin Multi-Asset Income Blended Benchmark is comprised of 43.5% Bloomberg U.S. Aggregate Index, 21.5% Russell 3000 Index, 18.5% Bloomberg U.S. Corporate High Yield Index, 11% Bloomberg Global Aggregate ex-USD Index Hedged USD, and 5.5% MSCI ACWI ex USA Index-NR.