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Investments - Available-for-Sale Securities by Type (Details) - Ameriprise Financial - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Investments
Amortized Cost	$ 46,896	$ 43,384
Gross Unrealized Gains	442	289
Gross Unrealized Losses	(2,430)	(2,840)
Allowance for Credit Losses	(25)	(22)	$ (1)	$ (1)
Fair Value	44,883	40,811
Accrued interest excluded from amortized cost basis	262	237
Assets pledged to meet contractual obligations
Investments
Fair Value	3,300	3,300
Assets pledged to meet contractual obligations, which may be sold, pledged or rehypothecated by the counterparty
Investments
Fair Value	175	302
Corporate debt securities
Investments
Amortized Cost	10,868	10,361
Gross Unrealized Gains	287	180
Gross Unrealized Losses	(622)	(823)
Allowance for Credit Losses	(23)	(20)	0	0
Fair Value	10,510	9,698
Residential mortgage backed securities
Investments
Amortized Cost	18,852	17,056
Gross Unrealized Gains	58	37
Gross Unrealized Losses	(1,247)	(1,390)
Allowance for Credit Losses	0	0
Fair Value	17,663	15,703
Commercial mortgage backed securities
Investments
Amortized Cost	6,859	6,648
Gross Unrealized Gains	12	3
Gross Unrealized Losses	(406)	(439)
Allowance for Credit Losses	0	0
Fair Value	6,465	6,212
Asset backed securities
Investments
Amortized Cost	7,366	6,408
Gross Unrealized Gains	11	14
Gross Unrealized Losses	(133)	(158)
Allowance for Credit Losses	0	0
Fair Value	7,244	6,264
State and municipal obligations
Investments
Amortized Cost	769	773
Gross Unrealized Gains	73	53
Gross Unrealized Losses	(20)	(27)
Allowance for Credit Losses	(2)	(2)	$ (1)	$ (1)
Fair Value	820	797
U.S. government and agencies obligations
Investments
Amortized Cost	2,135	2,079
Gross Unrealized Gains	1	1
Gross Unrealized Losses	0	(1)
Allowance for Credit Losses	0	0
Fair Value	2,136	2,079
Foreign government bonds and obligations
Investments
Amortized Cost	30	43
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2)	(2)
Allowance for Credit Losses	0	0
Fair Value	28	41
Other securities
Investments
Amortized Cost	17	16
Gross Unrealized Gains	0	1
Gross Unrealized Losses	0	0
Allowance for Credit Losses	0	0
Fair Value	$ 17	$ 17