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Fair Values of Assets and Liabilities - Changes in Level 3 Liabilities (Details) - Ameriprise Financial - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Changes in Level 3 liabilities measured at fair value on a recurring basis
Net decrease to pretax income from adjustment for nonperformance risk on the fair value of embedded derivatives	$ 16	$ 0
Policyholder account balances, future policy benefits and claims embedded derivatives
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, beginning	3,516	1,933
Total (gains) losses included in Net income	(543)	674
Issues	12	43
Settlements	(124)	(90)
Balance, ending	2,861	2,560
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period	(543)	670
Fixed deferred indexed annuities embedded derivatives
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, beginning	53	49
Total (gains) losses included in Net income	0	4
Issues	0	0
Settlements	(2)	(1)
Balance, ending	51	52
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period	0	0
IUL embedded derivatives
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, beginning	1,002	873
Total (gains) losses included in Net income	5	42
Issues	(1)	6
Settlements	(37)	(33)
Balance, ending	969	888
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period	5	42
Structured variable annuity embedded derivatives
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, beginning	2,461	1,011
Total (gains) losses included in Net income	(548)	628
Issues	13	37
Settlements	(85)	(56)
Balance, ending	1,841	1,620
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period	(548)	628
Other liabilities
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, beginning	68	76
Total (gains) losses included in Net income	(6)	0
Issues	10	3
Settlements	(7)	(8)
Balance, ending	65	71
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period	$ 0	$ 0

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- Definition

Net Increase or Decrease in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 15
-Name Accounting Standards Codification
-Publisher FASB
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Amount of unrealized gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3) and still held.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

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Amount of issuances of financial instrument classified as a liability 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 settlements of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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

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