Fair Values of Assets and Liabilities - Changes in Level 3 Assets (Details) - Ameriprise Financial - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Available-for-Sale securities
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	$ 616	$ 929	$ 544	$ 813
Total gains (losses) included in Net income	(1)		(1)	(1)
Total gains (losses) included in Other comprehensive income (loss)	(11)	2	(33)	(3)
Purchases	153	21	288	145
Settlements	(27)	(28)	(33)	(30)
Transfers out of Level 3	(112)	(527)	(147)	(527)
Balance, ending	618	397	618	397
Changes in unrealized gains (losses) included 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	(11)	2	(32)
Corporate debt securities
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	497	812	502	772
Total gains (losses) included in Net income	(1)		(1)	0
Total gains (losses) included in Other comprehensive income (loss)	(11)	2	(33)	(3)
Purchases	0	21	23	67
Settlements	(27)	(28)	(33)	(29)
Transfers out of Level 3	0	(416)	0	(416)
Balance, ending	458	391	458	391
Changes in unrealized gains (losses) included in net income relating to assets held at end of period	(1)		(1)	0
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period	(11)	2	(32)
Residential mortgage backed securities
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	0	87	0	9
Total gains (losses) included in Net income	0		0	0
Total gains (losses) included in Other comprehensive income (loss)	0	0	0	0
Purchases	139	0	139	78
Settlements	0	0	0	0
Transfers out of Level 3	0	(87)	0	(87)
Balance, ending	139	0	139	0
Changes in unrealized gains (losses) included in net income relating to assets held at end of period	0		0	0
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period	0	0	0
Commercial mortgage backed securities
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	112		35
Total gains (losses) included in Net income	0		0
Total gains (losses) included in Other comprehensive income (loss)	0		0
Purchases	0		112
Settlements	0		0
Transfers out of Level 3	(112)		(147)
Balance, ending	0		0
Changes in unrealized gains (losses) included in net income relating to assets held at end of period	0		0
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period	0		0
Asset backed securities
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	7	30	7	32
Total gains (losses) included in Net income	0		0	(1)
Total gains (losses) included in Other comprehensive income (loss)	0	0	0	0
Purchases	14	0	14	0
Settlements	0	0	0	(1)
Transfers out of Level 3	0	(24)	0	(24)
Balance, ending	21	6	21	6
Changes in unrealized gains (losses) included in net income relating to assets held at end of period	0		0	$ (1)
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period	0	$ 0	0
Fixed deferred indexed annuities ceded embedded derivatives
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	55		59
Total gains (losses) included in Net income	(5)		(8)
Total gains (losses) included in Other comprehensive income (loss)	0		0
Purchases	0		0
Settlements	(1)		(2)
Transfers out of Level 3	0		0
Balance, ending	49		49
Changes in unrealized gains (losses) included in net income relating to assets held at end of period	0		0
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period	$ 0		$ 0

Amount of unrealized gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3) and still held.

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Amount of unrealized gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3) and still held.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).

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Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3).

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Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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