Investments - Available-for Sale Securities in Continuous Unrealized Loss Position (Details) $ in Millions	Dec. 31, 2023 USD ($) position	Dec. 31, 2022 USD ($) position
Unrealized losses
Available -for-sale securities with gross unrealized losses considered investment grade	96.00%	95.00%
Ameriprise Financial
Number of Securities
Less than 12 months | position	275	1,512
12 months or more | position	1,556	512
Total | position	1,831	2,024
Fair Value
Less than 12 months	$ 6,944	$ 24,196
12 months or more	22,956	8,491
Total	29,900	32,687
Unrealized losses
Less than 12 months	(48)	(1,360)
12 months or more	(2,051)	(1,480)
Total	$ (2,099)	$ (2,840)
Ameriprise Financial | Corporate debt securities
Number of Securities
Less than 12 months | position	97	457
12 months or more | position	376	108
Total | position	473	565
Fair Value
Less than 12 months	$ 1,276	$ 5,782
12 months or more	5,197	1,575
Total	6,473	7,357
Unrealized losses
Less than 12 months	(11)	(458)
12 months or more	(496)	(365)
Total	$ (507)	$ (823)
Ameriprise Financial | Residential mortgage backed securities
Number of Securities
Less than 12 months | position	82	589
12 months or more | position	734	244
Total | position	816	833
Fair Value
Less than 12 months	$ 3,052	$ 9,407
12 months or more	10,677	4,076
Total	13,729	13,483
Unrealized losses
Less than 12 months	(25)	(577)
12 months or more	(1,146)	(813)
Total	$ (1,171)	$ (1,390)
Ameriprise Financial | Commercial mortgage backed securities
Number of Securities
Less than 12 months | position	31	249
12 months or more | position	277	101
Total | position	308	350
Fair Value
Less than 12 months	$ 747	$ 3,857
12 months or more	4,092	1,802
Total	4,839	5,659
Unrealized losses
Less than 12 months	(9)	(220)
12 months or more	(332)	(219)
Total	$ (341)	$ (439)
Ameriprise Financial | Asset backed securities
Number of Securities
Less than 12 months | position	49	145
12 months or more | position	116	31
Total | position	165	176
Fair Value
Less than 12 months	$ 885	$ 4,413
12 months or more	2,840	977
Total	3,725	5,390
Unrealized losses
Less than 12 months	(2)	(86)
12 months or more	(57)	(72)
Total	$ (59)	$ (158)
Ameriprise Financial | State and municipal obligations
Number of Securities
Less than 12 months | position	5	48
12 months or more | position	49	27
Total | position	54	75
Fair Value
Less than 12 months	$ 29	$ 134
12 months or more	138	60
Total	167	194
Unrealized losses
Less than 12 months	(1)	(16)
12 months or more	(19)	(11)
Total	$ (20)	$ (27)
Ameriprise Financial | U.S. government and agency obligations
Number of Securities
Less than 12 months | position	11	13
12 months or more | position	1	0
Total | position	12	13
Fair Value
Less than 12 months	$ 955	$ 566
12 months or more	0	0
Total	955	566
Unrealized losses
Less than 12 months	0	(1)
12 months or more	0	0
Total	$ 0	$ (1)
Ameriprise Financial | Foreign government bonds and obligations
Number of Securities
Less than 12 months | position	0	11
12 months or more | position	3	1
Total | position	3	12
Fair Value
Less than 12 months	$ 0	$ 37
12 months or more	12	1
Total	12	38
Unrealized losses
Less than 12 months	0	(2)
12 months or more	(1)	0
Total	$ (1)	$ (2)