Debt - Balances and Stated Interest Rates (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Debt and stated interest rates
Short-term borrowings	$ 200	$ 200
Ameriprise Financial
Debt and stated interest rates
Other	(21)	(23)
Total long-term debt	3,079	3,077
Short-term borrowings	200	200
Total	$ 3,279	$ 3,277
Ameriprise Financial \| Weighted average
Debt and stated interest rates
FHLB advances, Stated interest rate (as a percent)	3.80%	4.00%
Ameriprise Financial \| Senior notes due 2026
Debt and stated interest rates
Long-term debt	$ 500	$ 500
Stated interest rate long-term debt (as a percent)	2.90%	2.90%
Ameriprise Financial \| Senior notes due 2028
Debt and stated interest rates
Long-term debt	$ 600	$ 600
Stated interest rate long-term debt (as a percent)	5.70%	5.70%
Ameriprise Financial \| Senior notes due 2032
Debt and stated interest rates
Long-term debt	$ 500	$ 500
Stated interest rate long-term debt (as a percent)	4.50%	4.50%
Ameriprise Financial \| Senior notes due 2033
Debt and stated interest rates
Long-term debt	$ 750	$ 750
Stated interest rate long-term debt (as a percent)	5.20%	5.20%
Ameriprise Financial \| Senior notes due 2035
Debt and stated interest rates
Long-term debt	$ 750	$ 750
Stated interest rate long-term debt (as a percent)	5.20%	5.20%

Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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