Fair Values of Assets and Liabilities - Changes in Level 3 Liabilities (Details) - Ameriprise Financial - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
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 fair value of embedded derivatives	$ 51	$ 45	$ (23)
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	646	1,367	1,054
Total (gains) included in Net income	1,372	(747)	471
Total gains (losses) included in Other comprehensive income (loss)	0	0
Issues	163	141	(28)
Settlements	(248)	(115)	(130)
Balance, ending	1,933	646	1,367
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period	1,364	(738)	68
Fixed deferred indexed annuities embedded derivatives
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, beginning	44	56	49
Total (gains) included in Net income	8	(9)	10
Total gains (losses) included in Other comprehensive income (loss)	0	0
Issues	0	0	0
Settlements	(3)	(3)	(3)
Balance, ending	49	44	56
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period	$ 0	$ 0	$ 0
Gain (loss), location	Interest credited to fixed accounts	Interest credited to fixed accounts	Interest credited to fixed accounts
IUL embedded derivatives
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, beginning	$ 739	$ 905	$ 935
Total (gains) included in Net income	198	(105)	68
Total gains (losses) included in Other comprehensive income (loss)	0	0
Issues	59	51	0
Settlements	(123)	(112)	(98)
Balance, ending	873	739	905
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period	$ 198	$ (105)	$ 68
Gain (loss), location	Interest credited to fixed accounts	Interest credited to fixed accounts	Interest credited to fixed accounts
Changes in unrealized gains (losses), location	Interest credited to fixed accounts	Interest credited to fixed accounts	Interest credited to fixed accounts
Structured variable annuity embedded derivatives
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, beginning	$ (137)	$ 406	$ 70
Total (gains) included in Net income	1,166	(633)	393
Total gains (losses) included in Other comprehensive income (loss)	0	0
Issues	104	90	(28)
Settlements	(122)	0	(29)
Balance, ending	1,011	(137)	406
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period	$ 1,166	$ (633)	$ 0
Gain (loss), location	Benefits, claims, losses and settlement expenses	Benefits, claims, losses and settlement expenses	Benefits, claims, losses and settlement expenses
Changes in unrealized gains (losses), location	Benefits, claims, losses and settlement expenses	Benefits, claims, losses and settlement expenses	Benefits, claims, losses and settlement expenses
Other liabilities
Changes in Level 3 liabilities measured at fair value on a recurring basis
Balance, beginning	$ 62	$ 61	$ 43
Total (gains) included in Net income	2	0	(13)
Total gains (losses) included in Other comprehensive income (loss)	1	(3)
Issues	44	37	45
Settlements	(33)	(33)	(14)
Balance, ending	76	62	61
Changes in unrealized (gains) losses in net income relating to liabilities held at end of period	$ 0	$ 0	$ 0