Fair Values of Assets and Liabilities (Level 3 rollforwards-Liabilities) (Details 3) - Ameriprise Financial - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021		Jun. 30, 2020
Changes in Level 3 liabilities measured at fair value on a recurring basis
Net increase (decrease) to pretax income from adjustment for nonperformance risk on the fair value of embedded derivatives		$ 27	$ (1,200)	$ (139)		$ 569
Policyholder account balances, future policy benefits and claims embedded derivatives
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, at the beginning of the period		1,840	4,025	3,370		1,687
Total gains (losses) included in net income		636	(53)	(986)		2,207
Issues		87	119	168		211
Settlements		6	(30)	17		(44)
Balance, at the end of the period		2,569	4,061	2,569		4,061
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period		537	(56)	(1,139)		2,222
Fixed deferred indexed annuity embedded derivatives
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, at the beginning of the period		52	33	49		43
Total gains (losses) included in net income	[1]	2	7	6		(5)
Issues			1			3
Settlements				(1)
Balance, at the end of the period		54	41	54		41
IUL embedded derivatives
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, at the beginning of the period		949	725	935		881
Total gains (losses) included in net income	[1]	8	148	37		3
Issues		(1)	30	4		38
Settlements		(28)	(21)	(48)		(40)
Balance, at the end of the period		928	882	928		882
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period		8	148	37	[2]	3	[2]
GMWB and GMAB embedded derivatives
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, at the beginning of the period		715	3,276	2,316		763
Total gains (losses) included in net income		525	(224)	(1,204)	[1]	2,196	[1]
Issues		89	86	179		174
Settlements		44	(9)	82		(4)
Balance, at the end of the period		1,373	3,129	1,373		3,129
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period		529	(204)	(1,176)	[1]	2,219	[1]
Structured annuity embedded derivatives
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, at the beginning of the period		124	(9)	70		0
Total gains (losses) included in net income		101	16	175	[1]	13
Issues		(1)	2	(15)		(4)
Settlements		(10)		(16)
Balance, at the end of the period		214	9	214		9
Contingent consideration liabilities
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, at the beginning of the period		43	42	43		44
Total gains (losses) included in net income		1	1	1	[3]	(1)	[3]
Issues		4	8	6		10
Settlements		(4)	(3)	(6)		(5)
Balance, at the end of the period		$ 44	$ 48	$ 44		$ 48

[1] Included in interest credited to fixed accounts in the Consolidated Statements of Operations.

[2] Included in net investment income in the Consolidated Statements of Operations.

[3] Included in benefits, claims, losses and settlement expenses in the Consolidated Statements of Operations.