Investments - Available-for Sale Securities in Continuous Unrealized Loss Position (Details) - Ameriprise Financial $ in Millions	Sep. 30, 2022 USD ($) security	Dec. 31, 2021 USD ($) security
Number of securities
Less than 12 Months | security	1,687	490
12 Months or More | security	303	91
Total | security	1,990	581
Fair Value
Less than 12 Months	$ 28,479	$ 12,001
12 Months or More	4,356	533
Total	32,835	12,534
Unrealized Losses
Less than 12 Months	(2,256)	(125)
12 Months or More	(819)	(9)
Unrealized Losses	$ (3,075)	$ (134)
Available -for-Sale Securities with gross unrealized losses considered investment grade (as a percent)	95.00%	96.00%
Corporate debt securities
Number of securities
Less than 12 Months | security	484	110
12 Months or More | security	72	14
Total | security	556	124
Fair Value
Less than 12 Months	$ 6,088	$ 2,056
12 Months or More	1,049	81
Total	7,137	2,137
Unrealized Losses
Less than 12 Months	(694)	(43)
12 Months or More	(289)	(5)
Unrealized Losses	$ (983)	$ (48)
Residential mortgage backed securities
Number of securities
Less than 12 Months | security	675	206
12 Months or More | security	141	56
Total | security	816	262
Fair Value
Less than 12 Months	$ 12,000	$ 5,808
12 Months or More	2,067	191
Total	14,067	5,999
Unrealized Losses
Less than 12 Months	(1,057)	(48)
12 Months or More	(369)	(2)
Unrealized Losses	$ (1,426)	$ (50)
Commercial mortgage backed securities
Number of securities
Less than 12 Months | security	273	102
12 Months or More | security	61	9
Total | security	334	111
Fair Value
Less than 12 Months	$ 4,064	$ 2,184
12 Months or More	941	139
Total	5,005	2,323
Unrealized Losses
Less than 12 Months	(308)	(22)
12 Months or More	(128)	(1)
Unrealized Losses	$ (436)	$ (23)
Asset backed securities
Number of securities
Less than 12 Months | security	152	41
12 Months or More | security	12	6
Total | security	164	47
Fair Value
Less than 12 Months	$ 4,981	$ 1,883
12 Months or More	262	118
Total	5,243	2,001
Unrealized Losses
Less than 12 Months	(171)	(11)
12 Months or More	(24)	0
Unrealized Losses	$ (195)	$ (11)
State and municipal obligations
Number of securities
Less than 12 Months | security	61	26
12 Months or More | security	16	0
Total | security	77	26
Fair Value
Less than 12 Months	$ 158	$ 64
12 Months or More	36	0
Total	194	64
Unrealized Losses
Less than 12 Months	(18)	(1)
12 Months or More	(8)	0
Unrealized Losses	$ (26)	$ (1)
U.S. government and agency obligations
Number of securities
Less than 12 Months | security	26
12 Months or More | security	0
Total | security	26
Fair Value
Less than 12 Months	$ 1,108
12 Months or More	0
Total	1,108
Unrealized Losses
Less than 12 Months	(1)
12 Months or More	0
Unrealized Losses	$ (1)
Foreign government bonds and obligations
Number of securities
Less than 12 Months | security	13	5
12 Months or More | security	1	6
Total | security	14	11
Fair Value
Less than 12 Months	$ 38	$ 6
12 Months or More	1	4
Total	39	10
Unrealized Losses
Less than 12 Months	(4)	0
12 Months or More	(1)	(1)
Unrealized Losses	$ (5)	$ (1)
Other securities
Number of securities
Less than 12 Months | security	3
12 Months or More | security	0
Total | security	3
Fair Value
Less than 12 Months	$ 42
12 Months or More	0
Total	42
Unrealized Losses
Less than 12 Months	(3)
12 Months or More	0
Unrealized Losses	$ (3)