Investments - Summary of Net Investment Income (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022		Sep. 30, 2023	Sep. 30, 2022
Summary of Net investment income
Net investment income	$ 809	$ 349	[1]	$ 2,318	$ 897	[1]
Ameriprise Financial
Summary of Net investment income
Investment income on fixed maturities	693	363		1,909	836
Net realized gains (losses)	(37)	(87)		(27)	(82)
Affordable housing partnerships	(5)	(11)		(8)	(37)
Other	112	51		311	110
Consolidated investment entities
Summary of Net investment income
Net investment income	$ 46	$ 33		$ 133	$ 70

[1] Certain prior period amounts have been restated. See Note 3 for more information.