SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT (Statement of Operations) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues
Other revenues									$ 1,279	$ 1,249	$ 1,105
Gain on disposal of business									213	0	0
Total revenues									13,103	12,924	12,180
Banking and deposit interest expense									136	89	48
Total net revenues	$ 3,287	$ 3,317	$ 3,245	$ 3,118	$ 3,179	$ 3,292	$ 3,196	$ 3,168	12,967	12,835	12,132
Expenses
Benefits, claims, losses and settlement expenses									2,576	2,302	2,233
Distribution expenses									3,810	3,637	3,397
Interest and debt expense									214	245	207
General and administrative expense									3,287	3,171	3,158
Total expenses									10,735	10,351	9,918
Income tax benefit									339	386	734
Net income	$ 463	$ 543	$ 492	$ 395	$ 539	$ 503	$ 462	$ 594	1,893	2,098	1,480
Other comprehensive income (loss), net of tax									553	(519)	29
Total comprehensive income									2,446	1,579	1,509
Management and financial advice fees [Member]
Revenues
Management and financial advice fees									(7,015)	(6,776)	(6,415)
Ameriprise Financial, Inc:
Revenues
Net investment income									9	34	11
Other revenues									14	4	8
Gain on disposal of business									213
Total revenues									235	37	18
Banking and deposit interest expense									9	7	5
Total net revenues									226	30	13
Expenses
Benefits, claims, losses and settlement expenses									49	4	76
Distribution expenses									24	4	18
Interest and debt expense									126	120	116
General and administrative expense									244	210	246
Total expenses									443	338	456
Pretax loss before equity in earnings of subsidiaries									(217)	(308)	(443)
Income tax benefit									(38)	(73)	(47)
Loss before equity in earnings of subsidiaries									(179)	(235)	(396)
Equity in earnings of subsidiaries									2,072	2,333	1,876
Net income									1,893	2,098	1,480
Other comprehensive income (loss), net of tax									553	(519)	29
Total comprehensive income									2,446	1,579	1,509
Ameriprise Financial, Inc: | Management and financial advice fees [Member]
Revenues
Management and financial advice fees									$ (1)	$ (1)	$ (1)