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Investments - Available-for-Sale Securities by Type (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Investments
Securities invested		$ 4,235	$ 2,680
RiverSource Life
Investments
Amortized Cost	$ 16,809	16,809			$ 14,718
Gross Unrealized Gains	193	193			1,600
Gross Unrealized Losses	(1,591)	(1,591)			(78)
Allowance for Credit Losses	(22)	(22)	(1)	$ (1)	(1)	$ 0	$ (10)
Fair Value	15,389	15,389			16,239
Accrued interest excluded from amortized cost basis	139	139			118
RiverSource Life \| Assets pledged to meet contractual obligations
Investments
Fair Value	3,000	3,000			2,400
RiverSource Life \| Assets pledged to meet contractual obligations, which may be sold, pledged or rehypothecated by the counterparty
Investments
Fair Value	373	373			314
RiverSource Life \| Corporate debt securities
Investments
Amortized Cost	9,093	9,093			8,447
Gross Unrealized Gains	125	125			1,238
Gross Unrealized Losses	(958)	(958)			(47)
Allowance for Credit Losses	(20)	(20)	0	0	0	0	(10)
Fair Value	8,240	8,240			9,638
RiverSource Life \| Residential mortgage backed securities
Investments
Amortized Cost	2,944	2,944			2,226
Gross Unrealized Gains	0	0			36
Gross Unrealized Losses	(319)	(319)			(12)
Allowance for Credit Losses	0	0			0
Fair Value	2,625	2,625			2,250
RiverSource Life \| Commercial mortgage backed securities
Investments
Amortized Cost	3,056	3,056			2,615
Gross Unrealized Gains	0	0			56
Gross Unrealized Losses	(258)	(258)			(15)
Allowance for Credit Losses	0	0			0
Fair Value	2,798	2,798			2,656
RiverSource Life \| State and municipal obligations
Investments
Amortized Cost	768	768			832
Gross Unrealized Gains	57	57			244
Gross Unrealized Losses	(26)	(26)			(1)
Allowance for Credit Losses	(2)	(2)	$ (1)	$ (1)	(1)	$ 0	$ 0
Fair Value	797	797			1,074
RiverSource Life \| Asset backed securities
Investments
Amortized Cost	908	908			517
Gross Unrealized Gains	11	11			22
Gross Unrealized Losses	(27)	(27)			(2)
Allowance for Credit Losses	0	0			0
Fair Value	892	892			537
RiverSource Life \| Asset backed securities \| Affiliated [Member]
Investments
Fair Value	555	555			289
Securities invested	564
RiverSource Life \| Foreign government bonds and obligations
Investments
Amortized Cost	39	39			80
Gross Unrealized Gains	0	0			4
Gross Unrealized Losses	(3)	(3)			(1)
Allowance for Credit Losses	0	0			0
Fair Value	36	36			83
RiverSource Life \| U.S. government and agency obligations
Investments
Amortized Cost	1	1			1
Gross Unrealized Gains	0	0			0
Gross Unrealized Losses	0	0			0
Allowance for Credit Losses	0	0			0
Fair Value	$ 1	$ 1			$ 1