Investments - Available-for Sale Securities in Continuous Unrealized Loss Position (Details) - Ameriprise Financial $ in Millions	Jun. 30, 2023 USD ($) security	Dec. 31, 2022 USD ($) security
Number of securities
Less than 12 months | security	769	1,512
12 months or more | security	1,422	512
Total | security	2,191	2,024
Fair Value
Less than 12 months	$ 18,219	$ 24,196
12 months or more	20,511	8,491
Total	38,730	32,687
Unrealized Losses
Less than 12 months	(348)	(1,360)
12 months or more	(2,396)	(1,480)
Total	$ (2,744)	$ (2,840)
Available -for-Sale Securities with gross unrealized losses considered investment grade (as a percent)	96.00%	95.00%
Corporate debt securities
Number of securities
Less than 12 months | security	285	457
12 months or more | security	335	108
Total | security	620	565
Fair Value
Less than 12 months	$ 4,078	$ 5,782
12 months or more	4,144	1,575
Total	8,222	7,357
Unrealized Losses
Less than 12 months	(105)	(458)
12 months or more	(615)	(365)
Total	$ (720)	$ (823)
Residential mortgage backed securities
Number of securities
Less than 12 months | security	285	589
12 months or more | security	633	244
Total | security	918	833
Fair Value
Less than 12 months	$ 7,992	$ 9,407
12 months or more	8,978	4,076
Total	16,970	13,483
Unrealized Losses
Less than 12 months	(194)	(577)
12 months or more	(1,232)	(813)
Total	$ (1,426)	$ (1,390)
Commercial mortgage backed securities
Number of securities
Less than 12 months | security	59	249
12 months or more | security	278	101
Total | security	337	350
Fair Value
Less than 12 months	$ 1,371	$ 3,857
12 months or more	3,990	1,802
Total	5,361	5,659
Unrealized Losses
Less than 12 months	(30)	(220)
12 months or more	(417)	(219)
Total	$ (447)	$ (439)
Asset backed securities
Number of securities
Less than 12 months | security	102	145
12 months or more | security	117	31
Total | security	219	176
Fair Value
Less than 12 months	$ 3,202	$ 4,413
12 months or more	3,241	977
Total	6,443	5,390
Unrealized Losses
Less than 12 months	(14)	(86)
12 months or more	(109)	(72)
Total	$ (123)	$ (158)
State and municipal obligations
Number of securities
Less than 12 months | security	14	48
12 months or more | security	54	27
Total | security	68	75
Fair Value
Less than 12 months	$ 45	$ 134
12 months or more	141	60
Total	186	194
Unrealized Losses
Less than 12 months	(1)	(16)
12 months or more	(21)	(11)
Total	$ (22)	$ (27)
U.S. government and agencies obligations
Number of securities
Less than 12 months | security	21	13
12 months or more | security	0	0
Total | security	21	13
Fair Value
Less than 12 months	$ 1,523	$ 566
12 months or more	0	0
Total	1,523	566
Unrealized Losses
Less than 12 months	(4)	(1)
12 months or more	0	0
Total	$ (4)	$ (1)
Foreign government bonds and obligations
Number of securities
Less than 12 months | security	3	11
12 months or more | security	5	1
Total | security	8	12
Fair Value
Less than 12 months	$ 8	$ 37
12 months or more	17	1
Total	25	38
Unrealized Losses
Less than 12 months	0	(2)
12 months or more	(2)	0
Total	$ (2)	$ (2)