Fair Values of Assets and Liabilities - Changes in Level 3 Assets (Details) - Ameriprise Financial - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Available-for-Sale securities
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	$ 544	$ 813
Total gains (losses) included in Net income	0	(1)
Total gains (losses) included in Other comprehensive income (loss)	(22)	(5)
Purchases	135	124
Settlements	(6)	(2)
Transfers out of Level 3	(35)
Balance, ending	616	929
Changes in unrealized gains (losses) included in net income relating to assets held at end of period		(1)
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period	(21)	(5)
Corporate debt securities
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	502	772
Total gains (losses) included in Net income	0	0
Total gains (losses) included in Other comprehensive income (loss)	(22)	(5)
Purchases	23	46
Settlements	(6)	(1)
Transfers out of Level 3	0
Balance, ending	497	812
Changes in unrealized gains (losses) included in net income relating to assets held at end of period		0
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period	(21)	(5)
Commercial mortgage backed securities
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	35
Total gains (losses) included in Net income	0
Total gains (losses) included in Other comprehensive income (loss)	0
Purchases	112
Settlements	0
Transfers out of Level 3	(35)
Balance, ending	112
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period	0
Residential mortgage backed securities
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning		9
Total gains (losses) included in Net income		0
Total gains (losses) included in Other comprehensive income (loss)		0
Purchases		78
Settlements		0
Balance, ending		87
Changes in unrealized gains (losses) included in net income relating to assets held at end of period		0
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period		0
Asset backed securities
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	7	32
Total gains (losses) included in Net income	0	(1)
Total gains (losses) included in Other comprehensive income (loss)	0	0
Purchases	0	0
Settlements	0	(1)
Transfers out of Level 3	0
Balance, ending	7	30
Changes in unrealized gains (losses) included in net income relating to assets held at end of period		(1)
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period	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	59
Total gains (losses) included in Net income	(3)
Total gains (losses) included in Other comprehensive income (loss)	0
Purchases	0
Settlements	(1)
Transfers out of Level 3	0
Balance, ending	55
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period	$ 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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-Topic 820
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-Section 50
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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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- Definition

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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