Fair Values of Assets and Liabilities (Level 3 rollforwards-Liabilities) (Details 3) - Ameriprise Financial [Member] - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation
Transfers from Level 1 to Level 2, liabilities		$ 0	$ 0	$ 0	$ 0
Transfers from Level 2 to Level 1, liabilities		0	0	0	0
Net increase (decrease) to pretax income from embedded derivative liability		(9)	97	(54)	287
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		493	382	464	364
Total gains (losses) included in net income	[1]	21	4	40	(4)
Issues		22	29	44	61
Settlements		(9)	(7)	(21)	(13)
Balance, at the end of the period		527	408	527	408
Changes in unrealized (gains)/losses relating to liabilities held at end of period	[1]	21	4	40	(4)
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		188	1,515	614	851
Total gains (losses) included in net income	[2]	10	386	(489)	988
Issues		77	70	154	138
Settlements		(3)	(6)	(7)	(12)
Balance, at the end of the period		272	1,965	272	1,965
Changes in unrealized (gains)/losses relating to liabilities held at end of period	[2]	20	405	(464)	1,021
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		681	1,897	1,078	1,215
Total gains (losses) included in net income		31	390	(449)	984
Issues		99	99	198	199
Settlements		(12)	(13)	(28)	(25)
Balance, at the end of the period		799	2,373	799	2,373
Changes in unrealized (gains)/losses relating to liabilities held at end of period		41	$ 409	(424)	$ 1,017
Contingent consideration liability [Member]
Summary of changes in Level 3 liabilities measured at fair value on a recurring basis [Rollforward]
Balance, at the beginning of the period		13		13
Total gains (losses) included in net income	[3]	1		1
Balance, at the end of the period		$ 14		$ 14

[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.