Fair Values of Assets and Liabilities - Changes in Level 3 Assets (Details) - Ameriprise Financial - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Available-for-Sale securities
Changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning		$ 813	$ 786	$ 1,075
Total gains (losses) included in Net income	[1]	(1)	(1)	(1)
Total gains (losses) included in Other comprehensive income (loss)		(10)	15	30
Purchases		221	282	550
Sales		(1)
Settlements		(121)	(54)	(260)
Transfers into Level 3		170	14	14
Transfers out of Level 3		(527)	(229)	(622)
Balance, ending		544	813	786
Changes in unrealized gains (losses) in net income relating to assets held at end of period	[1]	(2)	(2)	(1)
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period		(7)	16
Corporate debt securities
Changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning		772	750	913
Total gains (losses) included in Net income		(1)	(1)	(1)
Total gains (losses) included in Other comprehensive income (loss)		(10)	15	31
Purchases		108	62	55
Settlements		(119)	(54)	(248)
Transfers into Level 3		168
Transfers out of Level 3		(416)
Balance, ending		502	772	750
Changes in unrealized gains (losses) in net income relating to assets held at end of period		(1)	(1)	(1)
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period		(8)	16
Residential mortgage backed securities
Changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning		9	17	136
Total gains (losses) included in Other comprehensive income (loss)			1
Purchases		78	220	477
Settlements				(12)
Transfers out of Level 3		(87)	(229)	(584)
Balance, ending		0	9	17
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period			1
Commercial mortgage backed securities
Changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning		0	0	20
Purchases		35
Transfers out of Level 3				(20)
Balance, ending		35	0	0
Asset backed securities
Changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning		32	19	6
Total gains (losses) included in Other comprehensive income (loss)			(1)	(1)
Purchases				18
Sales		(1)
Settlements		(2)		0
Transfers into Level 3		2	14	14
Transfers out of Level 3		(24)		(18)
Balance, ending		7	32	$ 19
Changes in unrealized gains (losses) in net income relating to assets held at end of period		(1)	(1)
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period		1	(1)
Fixed deferred indexed annuities ceded embedded derivatives
Changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning		0
Total gains (losses) included in Net income		3
Issues	[2]	57
Settlements		(1)
Balance, ending		$ 59	$ 0

[1] Included in Net investment income.

[2] Represents the amount of ceded embedded derivatives associated with fixed deferred annuity products reinsured in the third quarter of 2021. See Note 1 for additional information on the reinsurance transaction.