Investments - Rollforward of Allowance for Credit Losses (Details) - Ameriprise Financial - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Rollforward of available-for-Sale securities allowance for credit losses
Beginning Balance	$ 25	$ 1	$ 22	$ 1
Reductions for securities sold during the period (realized)	(13)		(13)
Additional increases (decreases) on securities that had an allowance recorded in a previous period	3
Charge-offs		0		0
Ending Balance	9	1	9	1
Corporate debt securities
Rollforward of available-for-Sale securities allowance for credit losses
Beginning Balance	23	0	20	0
Reductions for securities sold during the period (realized)	(13)		(13)
Additional increases (decreases) on securities that had an allowance recorded in a previous period	(3)
Charge-offs		0		0
Ending Balance	7	0	7	0
State and municipal obligations
Rollforward of available-for-Sale securities allowance for credit losses
Beginning Balance	2	1	2	1
Reductions for securities sold during the period (realized)	0		0
Additional increases (decreases) on securities that had an allowance recorded in a previous period	0
Charge-offs		0		0
Ending Balance	$ 2	$ 1	$ 2	$ 1