Fair Values of Assets and Liabilities - Changes in Level 3 Assets (Details) - Ameriprise Financial - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Available-for-Sale securities
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	$ 411	$ 544
Total gains (losses) included in Net income		0
Total gains (losses) included in Other comprehensive income (loss)	8	(22)
Purchases	55	135
Settlements	(29)	(6)
Transfers out of Level 3		(35)
Balance, ending	445	616
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period	8	(21)
Corporate debt securities
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	405	502
Total gains (losses) included in Net income		0
Total gains (losses) included in Other comprehensive income (loss)	8	(22)
Purchases	55	23
Settlements	(28)	(6)
Transfers out of Level 3		0
Balance, ending	440	497
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period	8	(21)
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
Asset backed securities
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning	6	7
Total gains (losses) included in Net income		0
Total gains (losses) included in Other comprehensive income (loss)	0	0
Purchases	0	0
Settlements	(1)	0
Transfers out of Level 3		0
Balance, ending	5	7
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	48	59
Total gains (losses) included in Net income		(3)
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	48	55
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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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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).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
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-Section 50
-Paragraph 2
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-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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- Definition

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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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(3)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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- Definition

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.

+ References

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-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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