Fair Values of Assets and Liabilities (Level 3 rollforwards-Assets) (Details 2) - Ameriprise Financial [Member] - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Corporate debt securities [Member]
Summary of changes in Level 3 assets measured at fair value on a recurring basis [Rollforward]
Balance, at the beginning of the period		$ 847	$ 1,095	$ 913	$ 1,139
Total gains (losses) included in net income					(1)
Total gains (losses) included in other comprehensive income (loss)		13	(12)	28	(26)
Purchases		14	15	14	15
Settlements		(65)	(58)	(146)	(87)
Balance, at the end of the period		809	1,040	809	1,040
Changes in unrealized gains (losses) relating to assets held at end of period					(1)
Residential mortgage backed securities [Member]
Summary of changes in Level 3 assets measured at fair value on a recurring basis [Rollforward]
Balance, at the beginning of the period		37	146	136	155
Total gains (losses) included in other comprehensive income (loss)			3		1
Purchases		417		417
Settlements		(2)	(12)	(6)	(19)
Transfers out of Level 3		(4)	(17)	(99)	(17)
Balance, at the end of the period		448	120	448	120
Commercial mortgage backed securities [Member]
Summary of changes in Level 3 assets measured at fair value on a recurring basis [Rollforward]
Balance, at the beginning of the period			0	20	0
Purchases			52		52
Transfers out of Level 3				(20)
Balance, at the end of the period		0	52	0	52
Asset backed securities [Member]
Summary of changes in Level 3 assets measured at fair value on a recurring basis [Rollforward]
Balance, at the beginning of the period		6	17	6	7
Purchases		18	22	18	32
Transfers into Level 3			2		2	[1]
Transfers out of Level 3			(10)		(10)
Balance, at the end of the period		24	31	24	31
Available-for-sale securities [Member]
Summary of changes in Level 3 assets measured at fair value on a recurring basis [Rollforward]
Balance, at the beginning of the period		890	1,258	1,075	1,301
Total gains (losses) included in net income	[2]				(1)
Total gains (losses) included in other comprehensive income (loss)		13	(9)	28	(25)
Purchases		449	89	449	99
Settlements		(67)	(70)	(152)	(106)
Transfers into Level 3			2		2
Transfers out of Level 3		(4)	(27)	(119)	(27)
Balance, at the end of the period		$ 1,281	1,243	$ 1,281	1,243
Changes in unrealized gains (losses) relating to assets held at end of period	[2]				(1)
Other contracts [Member]
Summary of changes in Level 3 assets measured at fair value on a recurring basis [Rollforward]
Balance, at the beginning of the period			0		0
Total gains (losses) included in net income	[3]		(1)		(1)
Purchases			3		3
Balance, at the end of the period			2		2
Changes in unrealized gains (losses) relating to assets held at end of period	[3]		$ (1)		$ (1)

[1] Represents the elimination of intersegment revenues recognized for the six months ended June 30, 2019 and 2018 in each segment as follows: Advice & Wealth Management ($449 million and $487 million, respectively); Asset Management ($27 million and $24 million, respectively); Annuities ($179 million and $180 million, respectively); Protection ($30 million and $29 million, respectively); and Corporate & Other ($(3) million and $(1) million, respectively)

[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.