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Investments - Available-for-Sale Securities by Type (Details) - Ameriprise Financial - USD ($) $ in Millions	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Investments
Amortized Cost	$ 39,284		$ 30,541
Gross Unrealized Gains	199		1,644
Gross Unrealized Losses	(3,075)		(134)
Allowance for Credit Losses	(22)	$ (1)	(1)	$ (1)	$ 0	$ (11)
Fair Value	36,386		32,050
Accrued interest excluded from amortized cost basis	207		140
Assets pledged to meet contractual obligations
Investments
Fair Value	3,600		3,100
Assets pledged to meet contractual obligations, which may be sold, pledged or rehypothecated by the counterparty
Investments
Fair Value	373		314
Corporate debt securities
Investments
Amortized Cost	9,777		8,737
Gross Unrealized Gains	125		1,243
Gross Unrealized Losses	(983)		(48)
Allowance for Credit Losses	(20)	0	0	0	0	(10)
Fair Value	8,899		9,932
Residential mortgage backed securities
Investments
Amortized Cost	15,825		10,927
Gross Unrealized Gains	5		67
Gross Unrealized Losses	(1,426)		(50)
Allowance for Credit Losses	0		0
Fair Value	14,404		10,944
Commercial mortgage backed securities
Investments
Amortized Cost	6,041		4,950
Gross Unrealized Gains	1		59
Gross Unrealized Losses	(436)		(23)
Allowance for Credit Losses	0		0
Fair Value	5,606		4,986
Asset backed securities
Investments
Amortized Cost	5,592		3,639
Gross Unrealized Gains	11		26
Gross Unrealized Losses	(195)		(11)
Allowance for Credit Losses	0	0	0	0	0	(1)
Fair Value	5,408		3,654
State and municipal obligations
Investments
Amortized Cost	782		850
Gross Unrealized Gains	56		244
Gross Unrealized Losses	(26)		(1)
Allowance for Credit Losses	(2)	$ (1)	(1)	$ (1)	$ 0	$ 0
Fair Value	810		1,092
U.S. government and agency obligations
Investments
Amortized Cost	1,174		1,301
Gross Unrealized Gains	0		0
Gross Unrealized Losses	(1)		0
Allowance for Credit Losses	0		0
Fair Value	1,173		1,301
Foreign government bonds and obligations
Investments
Amortized Cost	48		88
Gross Unrealized Gains	0		5
Gross Unrealized Losses	(5)		(1)
Allowance for Credit Losses	0		0
Fair Value	43		92
Other securities
Investments
Amortized Cost	45		49
Gross Unrealized Gains	1		0
Gross Unrealized Losses	(3)		0
Allowance for Credit Losses	0		0
Fair Value	$ 43		$ 49