Fair Values of Assets and Liabilities (Level 3 rollforwards-Liabilities) (Details 3) - Ameriprise Financial [Member] - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Summary of changes in Level 3 liabilities measured at fair value on a recurring basis [Rollforward]
Net increase (decrease) to pretax income from adjustment for nonperformance risk on the fair value of embedded derivatives		$ 1,800	$ (158)
Fixed deferred indexed annuity embedded derivatives [Member]
Summary of changes in Level 3 liabilities measured at fair value on a recurring basis [Rollforward]
Balance, at the beginning of the period		43	14
Total gains (losses) included in net income	[1]	(12)	2
Issues		2	7
Balance, at the end of the period		33	23
IUL embedded derivatives [Member]
Summary of changes in Level 3 liabilities measured at fair value on a recurring basis [Rollforward]
Balance, at the beginning of the period		881	628
Total gains (losses) included in net income	[1]	(145)	98
Issues		8	36
Settlements		(19)	(17)
Balance, at the end of the period		725	745
Changes in unrealized (gains) losses relating to liabilities held at end of period	[1]	(145)	98
GMWB and GMAB embedded derivatives [Member]
Summary of changes in Level 3 liabilities measured at fair value on a recurring basis [Rollforward]
Balance, at the beginning of the period		763	328
Total gains (losses) included in net income	[2]	2,420	(230)
Issues		88	84
Settlements		5	(2)
Balance, at the end of the period		3,276	180
Changes in unrealized (gains) losses relating to liabilities held at end of period	[2]	2,423	(230)
Structured annuity embedded derivatives [Member]
Summary of changes in Level 3 liabilities measured at fair value on a recurring basis [Rollforward]
Balance, at the beginning of the period		0
Total gains (losses) included in net income	[2]	(3)
Issues		(6)
Balance, at the end of the period		(9)
Policyholder account balances, future policy benefits and claims [Member]
Summary of changes in Level 3 liabilities measured at fair value on a recurring basis [Rollforward]
Balance, at the beginning of the period		1,687	970
Total gains (losses) included in net income		2,260	(130)
Issues		92	127
Settlements		(14)	(19)
Balance, at the end of the period		4,025	948
Changes in unrealized (gains) losses relating to liabilities held at end of period		2,278	(132)
Contingent consideration liabilities [Member]
Summary of changes in Level 3 liabilities measured at fair value on a recurring basis [Rollforward]
Balance, at the beginning of the period		44	30
Total gains (losses) included in net income	[3]	(2)	1
Issues		2
Settlements		(2)
Balance, at the end of the period		$ 42	$ 31

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

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

[3] Included in general and administrative expense in the Consolidated Statements of Operations.