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, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation
Gain (Loss) on Embedded Derivative, Net		$ 43	$ 15	$ (115)	$ 48
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		23	3	14	0
Total gains (losses) included in net income	[1]	1		3
Issues		7	5	14	8
Balance, at the end of the period		31	8	31	8
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		745	585	628	601
Total gains (losses) included in net income	[1]	60	26	158	1
Issues		31	21	67	41
Settlements		(17)	(12)	(34)	(23)
Balance, at the end of the period		819	620	819	620
Changes in unrealized (gains) losses relating to liabilities held at end of period	[1]	60	26	158	1
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		180	(329)	328	(49)
Total gains (losses) included in net income	[2]	433	(175)	203	(531)
Issues		86	84	170	167
Settlements		(3)	(5)	(5)	(12)
Balance, at the end of the period		696	(425)	696	(425)
Changes in unrealized (gains) losses relating to liabilities held at end of period	[2]	430	(173)	200	(521)
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		948	259	970	552
Total gains (losses) included in net income		494	(149)	364	(530)
Issues		124	110	251	216
Settlements		(20)	(17)	(39)	(35)
Balance, at the end of the period		1,546	203	1,546	203
Changes in unrealized (gains) losses relating to liabilities held at end of period		490	(147)	358	(520)
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		31	28	30	28
Total gains (losses) included in net income	[3]		1	1	1
Balance, at the end of the period		$ 31	$ 29	$ 31	$ 29

[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.