Fair Values of Assets and Liabilities - Changes in Level 3 Liabilities (Details) - Ameriprise Financial - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Changes in Level 3 liabilities measured at fair value on a recurring basis
Net increase (decrease) to pretax income from adjustment for nonperformance risk on the fair value of embedded derivatives	$ 1	$ (17)	$ 20	$ 44
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	2,892	1,412	1,933	646
Total (gains) losses included in Net income	526	(244)	1,617	540
Other comprehensive income (loss)	0	0	0
Issues	26	41	116	112
Settlements	(130)	(77)	(352)	(166)
Balance, ending	3,314	1,132	3,314	1,132
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period	523	(244)	1,609	537
Changes in unrealized (gains) losses in other comprehensive income (loss) relating to liabilities held at period end			0
Fixed deferred indexed annuities embedded derivatives
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, beginning	52	46	49	44
Total (gains) losses included in Net income	3	0	8	3
Other comprehensive income (loss)	0	0	0
Issues	0	0	0	0
Settlements	(1)	(1)	(3)	(2)
Balance, ending	54	45	54	45
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period	0	0	0	0
Changes in unrealized (gains) losses in other comprehensive income (loss) relating to liabilities held at period end			0
IUL embedded derivatives
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, beginning	944	809	873	739
Total (gains) losses included in Net income	36	2	169	94
Other comprehensive income (loss)	0	0	0
Issues	3	6	17	46
Settlements	(40)	(30)	(116)	(92)
Balance, ending	943	787	943	787
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period	36	2	169	94
Changes in unrealized (gains) losses in other comprehensive income (loss) relating to liabilities held at period end			0
Structured variable annuity embedded derivatives
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, beginning	1,896	557	1,011	(137)
Total (gains) losses included in Net income	487	(246)	1,440	443
Other comprehensive income (loss)	0	0	0
Issues	23	35	99	66
Settlements	(89)	(46)	(233)	(72)
Balance, ending	2,317	300	2,317	300
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period	487	(246)	1,440	443
Changes in unrealized (gains) losses in other comprehensive income (loss) relating to liabilities held at period end			0
Other liabilities
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, beginning	69	78	76	62
Total (gains) losses included in Net income	0	0	1	1
Other comprehensive income (loss)	1	(1)	1
Issues	3	7	12	40
Settlements	(7)	(7)	(24)	(26)
Balance, ending	66	77	66	77
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period	$ 0	$ 0	0	$ 0
Changes in unrealized (gains) losses in other comprehensive income (loss) relating to liabilities held at period end			$ 1

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

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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.

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

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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 gain (loss) recognized in other comprehensive income (OCI) 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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