Fair Values of Assets and Liabilities - Changes in Level 3 Assets (Details) - Ameriprise Financial - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Changes in Level 3 assets measured at fair value on a recurring basis
Issues			$ 57
Available-for-Sale securities
Changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	$ 411	$ 544	813
Total gains (losses) included in Net income	0	(1)	(1)
Total gains (losses) included in Other comprehensive income (loss)	11	(49)	(10)
Purchases	126	572	221
Sales			(1)
Issues			0
Settlements	(78)	(91)	(121)
Transfers into Level 3			170
Transfers out of Level 3		(564)	(527)
Balance, ending	470	411	544
Changes in unrealized gains (losses) in net income relating to assets held at end of period		(1)	(2)
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period	11	(43)	(7)
Corporate debt securities
Changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	405	502	772
Total gains (losses) included in Net income	0	(1)	(1)
Total gains (losses) included in Other comprehensive income (loss)	11	(44)	(10)
Purchases	126	39	108
Sales			0
Issues			0
Settlements	(73)	(91)	(119)
Transfers into Level 3			168
Transfers out of Level 3		0	(416)
Balance, ending	469	405	502
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	11	(42)	(8)
Residential mortgage backed securities
Changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	0	0	9
Total gains (losses) included in Net income		0	0
Total gains (losses) included in Other comprehensive income (loss)		(4)	0
Purchases		389	78
Sales			0
Issues			0
Settlements		0	0
Transfers into Level 3			0
Transfers out of Level 3		(385)	(87)
Balance, ending		0	0
Changes in unrealized gains (losses) 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
Commercial mortgage backed securities
Changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	0	35	0
Total gains (losses) included in Net income		0	0
Total gains (losses) included in Other comprehensive income (loss)		0	0
Purchases		112	35
Sales			0
Issues			0
Settlements		0	0
Transfers into Level 3			0
Transfers out of Level 3		(147)	0
Balance, ending		0	35
Changes in unrealized gains (losses) 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
Changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	6	7	32
Total gains (losses) included in Net income	0	0	0
Total gains (losses) included in Other comprehensive income (loss)	0	(1)	0
Purchases	0	32	0
Sales			(1)
Issues			0
Settlements	(5)	0	(2)
Transfers into Level 3			2
Transfers out of Level 3		(32)	(24)
Balance, ending	1	6	7
Changes in unrealized gains (losses) in net income relating to assets held at end of period		0	(1)
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period	0	(1)	1
Fixed deferred indexed annuities ceded embedded derivatives
Changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	48	59	0
Total gains (losses) included in Net income	6	(8)	3
Total gains (losses) included in Other comprehensive income (loss)	0	0	0
Purchases	0	0	0
Sales			0
Settlements	(3)	(3)	(1)
Transfers into Level 3			0
Transfers out of Level 3		0	0
Balance, ending	51	48	59
Changes in unrealized gains (losses) 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	$ 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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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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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 issuances 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 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 sale 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 transfer of financial instrument classified as an asset into level 3 of the fair value hierarchy.

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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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