Investments - Available-for-Sale Securities by Type (Details) - Ameriprise Financial - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Investments
Amortized Cost	$ 32,433	$ 30,541
Gross Unrealized Gains	868	1,644
Gross Unrealized Losses	(970)	(134)
Allowance for Credit Losses	(1)	(1)	$ 0	$ (11)
Fair Value	32,330	32,050
Accrued interest excluded from amortized cost basis	156	140
Fair value of investment securities pledged to meet contractual obligations	3,300	3,100
Fair value of investment securities pledged that may be sold, pledged or rehypothecated by the counterparty	428	314
Corporate debt securities
Investments
Amortized Cost	9,012	8,737
Gross Unrealized Gains	667	1,243
Gross Unrealized Losses	(297)	(48)
Allowance for Credit Losses	0	0	0	(10)
Fair Value	9,382	9,932
Residential mortgage backed securities
Investments
Amortized Cost	12,117	10,927
Gross Unrealized Gains	17	67
Gross Unrealized Losses	(439)	(50)
Allowance for Credit Losses	0	0
Fair Value	11,695	10,944
Commercial mortgage backed securities
Investments
Amortized Cost	5,461	4,950
Gross Unrealized Gains	3	59
Gross Unrealized Losses	(168)	(23)
Allowance for Credit Losses	0	0
Fair Value	5,296	4,986
Asset backed securities
Investments
Amortized Cost	3,676	3,639
Gross Unrealized Gains	16	26
Gross Unrealized Losses	(54)	(11)
Allowance for Credit Losses	0	0	0	(1)
Fair Value	3,638	3,654
State and municipal obligations
Investments
Amortized Cost	847	850
Gross Unrealized Gains	163	244
Gross Unrealized Losses	(8)	(1)
Allowance for Credit Losses	(1)	(1)	$ 0	$ 0
Fair Value	1,001	1,092
U.S. government and agencies obligations
Investments
Amortized Cost	1,160	1,301
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Allowance for Credit Losses	0	0
Fair Value	1,160	1,301
Foreign government bonds and obligations
Investments
Amortized Cost	83	88
Gross Unrealized Gains	2	5
Gross Unrealized Losses	(3)	(1)
Allowance for Credit Losses	0	0
Fair Value	82	92
Other securities
Investments
Amortized Cost	77	49
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1)	0
Allowance for Credit Losses	0	0
Fair Value	$ 76	$ 49

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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