Financing Receivables (Credit Quality Information Tables) (Details 3) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Commercial mortgage loans
Credit card receivables	$ 96
FICO Score, Greater than 800
Commercial mortgage loans
Credit card receivables	28
FICO Score, 750-799
Commercial mortgage loans
Credit card receivables	23
FICO Score, 700-749
Commercial mortgage loans
Credit card receivables	25
FICO Score. 650 to 699
Commercial mortgage loans
Credit card receivables	15
FICO Score, Less than 650
Commercial mortgage loans
Credit card receivables	5
Commercial mortgage loans [Member]
Commercial mortgage loans
Financing Receivable, Year One, Originated, Current Fiscal Year	134
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	262
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	195
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	289
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	230
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,615
Total loans, gross	2,725	$ 2,797
Less: allowance for loan losses	29	19
Total loans, net	$ 2,696	$ 2,778
Percentage of gross commercial mortgage loans	100.00%	100.00%
Commercial mortgage loans [Member] | Apartments [Member]
Commercial mortgage loans
Total loans, gross	$ 713	$ 692
Percentage of gross commercial mortgage loans	26.00%	25.00%
Commercial mortgage loans [Member] | Hotel [Member]
Commercial mortgage loans
Total loans, gross	$ 50	$ 51
Percentage of gross commercial mortgage loans	2.00%	2.00%
Commercial mortgage loans [Member] | Industrial [Member]
Commercial mortgage loans
Total loans, gross	$ 427	$ 429
Percentage of gross commercial mortgage loans	16.00%	15.00%
Commercial mortgage loans [Member] | Mixed Use [Member]
Commercial mortgage loans
Total loans, gross	$ 87	$ 78
Percentage of gross commercial mortgage loans	3.00%	3.00%
Commercial mortgage loans [Member] | Office
Commercial mortgage loans
Total loans, gross	$ 372	$ 419
Percentage of gross commercial mortgage loans	14.00%	15.00%
Commercial mortgage loans [Member] | Retail
Commercial mortgage loans
Total loans, gross	$ 881	$ 931
Percentage of gross commercial mortgage loans	32.00%	33.00%
Commercial mortgage loans [Member] | Other
Commercial mortgage loans
Total loans, gross	$ 195	$ 197
Percentage of gross commercial mortgage loans	7.00%	7.00%
Commercial mortgage loans [Member] | East North Central [Member]
Commercial mortgage loans
Total loans, gross	$ 259	$ 239
Percentage of gross commercial mortgage loans	10.00%	9.00%
Commercial mortgage loans [Member] | East South Central [Member]
Commercial mortgage loans
Total loans, gross	$ 115	$ 121
Percentage of gross commercial mortgage loans	4.00%	4.00%
Commercial mortgage loans [Member] | Middle Atlantic [Member]
Commercial mortgage loans
Total loans, gross	$ 178	$ 182
Percentage of gross commercial mortgage loans	7.00%	6.00%
Commercial mortgage loans [Member] | Mountain [Member]
Commercial mortgage loans
Total loans, gross	$ 247	$ 251
Percentage of gross commercial mortgage loans	9.00%	9.00%
Commercial mortgage loans [Member] | New England [Member]
Commercial mortgage loans
Total loans, gross	$ 54	$ 54
Percentage of gross commercial mortgage loans	2.00%	2.00%
Commercial mortgage loans [Member] | Pacific [Member]
Commercial mortgage loans
Total loans, gross	$ 825	$ 831
Percentage of gross commercial mortgage loans	30.00%	30.00%
Commercial mortgage loans [Member] | South Atlantic [Member]
Commercial mortgage loans
Total loans, gross	$ 681	$ 723
Percentage of gross commercial mortgage loans	25.00%	26.00%
Commercial mortgage loans [Member] | West North Central [Member]
Commercial mortgage loans
Total loans, gross	$ 198	$ 214
Percentage of gross commercial mortgage loans	7.00%	8.00%
Commercial mortgage loans [Member] | West South Central [Member]
Commercial mortgage loans
Total loans, gross	$ 168	$ 182
Percentage of gross commercial mortgage loans	6.00%	6.00%
Commercial mortgage loans [Member] | Debt-to-Value Ratio, Greater than 100 Percent
Commercial mortgage loans
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	2
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	10
Total loans, gross	12
Commercial mortgage loans [Member] | Debt-to-Value Ratio, 80 to 100 Percent
Commercial mortgage loans
Financing Receivable, Year One, Originated, Current Fiscal Year	15
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	16
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	12
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	3
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	7
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	15
Total loans, gross	68
Commercial mortgage loans [Member] | Debt-to-Value, 60 to 80 Percent
Commercial mortgage loans
Financing Receivable, Year One, Originated, Current Fiscal Year	89
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	166
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	27
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	32
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	46
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	144
Total loans, gross	504
Commercial mortgage loans [Member] | Debt-to-Value, 40 to 60 Percent
Commercial mortgage loans
Financing Receivable, Year One, Originated, Current Fiscal Year	23
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	57
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	74
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	155
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	113
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	551
Total loans, gross	973
Commercial mortgage loans [Member] | Debt-to-Value, Less than 40 Percent
Commercial mortgage loans
Financing Receivable, Year One, Originated, Current Fiscal Year	7
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	23
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	80
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	99
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	64
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	895
Total loans, gross	1,168
Syndicated loans [Member]
Commercial mortgage loans
Financing Receivable, Year One, Originated, Current Fiscal Year	47
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	98
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	121
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	161
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	49
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	119
Total loans, gross	595	$ 543
Syndicated loans [Member] | Internal Risk Rating 5
Commercial mortgage loans
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	3
Total loans, gross	3
Syndicated loans [Member] | Internal Risk Rating 4
Commercial mortgage loans
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	4
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	9
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	10
Total loans, gross	23
Syndicated loans [Member] | Internal Risk Rating 3
Commercial mortgage loans
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	9
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	8
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	25
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	13
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	25
Total loans, gross	80
Syndicated loans [Member] | Internal Risk Rating 2
Commercial mortgage loans
Financing Receivable, Year One, Originated, Current Fiscal Year	30
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	57
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	62
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	69
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	14
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	41
Total loans, gross	273
Syndicated loans [Member] | Internal Risk Rating 1
Commercial mortgage loans
Financing Receivable, Year One, Originated, Current Fiscal Year	17
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	32
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	47
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	58
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	22
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	40
Total loans, gross	216
Loans to financial advisors [Member]
Commercial mortgage loans
Financing Receivable, Year One, Originated, Current Fiscal Year	171
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	137
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	101
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	128
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	84
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	94
Total loans, gross	715
Loans to financial advisors [Member] | Principle Loan Amount Outstanding, Actively Employed Advisors
Commercial mortgage loans
Financing Receivable, Year One, Originated, Current Fiscal Year	171
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	137
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	101
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	127
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	83
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	86
Total loans, gross	705
Loans to financial advisors [Member] | Principal amounts outstanding for advisor loans no longer affiliated with the Ameriprise Financial
Commercial mortgage loans
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	8
Total loans, gross	$ 10