Investments - Available-for Sale Securities in Continuous Unrealized Loss Position (Details) - Ameriprise Financial $ in Millions	Mar. 31, 2022 USD ($) position	Dec. 31, 2021 USD ($) position
Number of securities
Less than 12 months | position	1,099	490
12 months or more | position	146	91
Total | position	1,245	581
Fair Value
Less than 12 months	$ 20,085	$ 12,001
12 months or more	1,387	533
Total	21,472	12,534
Unrealized Losses
Less than 12 months	(859)	(125)
12 months or more	(111)	(9)
Total	$ (970)	$ (134)
Available -for-Sale Securities with gross unrealized losses considered investment grade (as a percent)	94.00%	96.00%
Corporate debt securities
Number of securities
Less than 12 months | position	253	110
12 months or more | position	40	14
Total | position	293	124
Fair Value
Less than 12 months	$ 3,182	$ 2,056
12 months or more	441	81
Total	3,623	2,137
Unrealized Losses
Less than 12 months	(234)	(43)
12 months or more	(63)	(5)
Total	$ (297)	$ (48)
Residential mortgage backed securities
Number of securities
Less than 12 months | position	444	206
12 months or more | position	70	56
Total | position	514	262
Fair Value
Less than 12 months	$ 9,348	$ 5,808
12 months or more	544	191
Total	9,892	5,999
Unrealized Losses
Less than 12 months	(410)	(48)
12 months or more	(29)	(2)
Total	$ (439)	$ (50)
Commercial mortgage backed securities
Number of securities
Less than 12 months | position	248	102
12 months or more | position	20	9
Total | position	268	111
Fair Value
Less than 12 months	$ 4,322	$ 2,184
12 months or more	277	139
Total	4,599	2,323
Unrealized Losses
Less than 12 months	(153)	(22)
12 months or more	(15)	(1)
Total	$ (168)	$ (23)
Asset backed securities
Number of securities
Less than 12 months | position	88	41
12 months or more | position	6	6
Total | position	94	47
Fair Value
Less than 12 months	$ 3,003	$ 1,883
12 months or more	113	118
Total	3,116	2,001
Unrealized Losses
Less than 12 months	(52)	(11)
12 months or more	(2)	0
Total	$ (54)	$ (11)
State and municipal obligations
Number of securities
Less than 12 months | position	55	26
12 months or more | position	1	0
Total | position	56	26
Fair Value
Less than 12 months	$ 126	$ 64
12 months or more	4	0
Total	130	64
Unrealized Losses
Less than 12 months	(8)	(1)
12 months or more	0	0
Total	$ (8)	$ (1)
Foreign government bonds and obligations
Number of securities
Less than 12 months | position	7	5
12 months or more | position	9	6
Total | position	16	11
Fair Value
Less than 12 months	$ 28	$ 6
12 months or more	8	4
Total	36	10
Unrealized Losses
Less than 12 months	(1)	0
12 months or more	(2)	(1)
Total	$ (3)	$ (1)
Other securities
Number of securities
Less than 12 months | position	4
12 months or more | position	0
Total | position	4
Fair Value
Less than 12 months	$ 76
12 months or more	0
Total	76
Unrealized Losses
Less than 12 months	(1)
12 months or more	0
Total	$ (1)