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Debt - Long-Term Debt (Details) - USD ($)
$ in Millions
9 Months Ended
Mar. 22, 2022
Sep. 30, 2022
Sep. 30, 2021
May 13, 2022
Dec. 31, 2021
Debt          
Repayments of long-term debt   $ 507 $ 6    
Senior notes due 2022 | Ameriprise Financial          
Debt          
Repayments of long-term debt $ 500        
Stated interest rate long-term debt (as a percent) 3.00% 0.00%     3.00%
Senior notes due 2032 | Ameriprise Financial          
Debt          
Stated interest rate long-term debt (as a percent)   4.50%     0.00%
Debt issued       $ 500  
Interest rate       4.50%  
Debt issuance costs       $ 5