Fair Value of Assets and Liabilities Fair Value of Assets and Liabilities (Level 3 rollforwards-Liabilities) (Details) - Ameriprise Financial [Member] - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net		$ (190)	$ 281	$ (71)
Indexed annuity embedded derivatives [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, at the beginning of the period		14	0
Total gains (losses) included in net income	[1]	8	(3)
Issues		21	17
Balance, at the end of the period		43	14	0
IUL embedded derivatives [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, at the beginning of the period		628	601	464
Total gains (losses) included in net income	[1]	209	(9)	87
Issues		113	90	92
Settlements		(69)	(54)	(42)
Balance, at the end of the period		881	628	601
Changes in unrealized gains/ (losses) included in income relating to liabilities held at end of period	[1]	209	(9)	87
GMWB and GMAB embedded derivatives [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, at the beginning of the period		328	(49)	614
Total gains (losses) included in net income	[2]	80	49	(977)
Issues		361	350	326
Settlements		(6)	(22)	(12)
Balance, at the end of the period		763	328	(49)
Changes in unrealized gains/ (losses) included in income relating to liabilities held at end of period	[2]	82	47	(946)
Policyholder account balances, future policy benefits and claims [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, at the beginning of the period		970	552	1,078
Total gains (losses) included in net income		297	37	(890)
Issues		495	457	418
Settlements		(75)	(76)	(54)
Balance, at the end of the period		1,687	970	552
Changes in unrealized gains/ (losses) included in income relating to liabilities held at end of period		291	38	(859)
Contingent Consideration Liability [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, at the beginning of the period		30	28	13
Total gains (losses) included in net income	[3]	(3)	2	2
Issues		18		13
Settlements		1
Balance, at the end of the period		$ 44	$ 30	$ 28

[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.