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Investments - Available-for-Sale Securities by Contractual Maturity (Details) - Ameriprise Financial - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Amortized Cost    
Due within one year $ 1,884  
Due after one year through five years 2,125  
Due after five years through 10 years 3,283  
Due after 10 years 3,733  
Total having single maturity dates 11,025  
Amortized Cost 30,541 $ 33,601
Fair Value    
Due within one year 1,892  
Due after one year through five years 2,231  
Due after five years through 10 years 3,359  
Due after 10 years 4,984  
Total having single maturity dates 12,466  
Fair Value 32,050 36,283
Residential mortgage backed securities    
Amortized Cost    
Without single maturity dates 10,927  
Amortized Cost 10,927 9,845
Fair Value    
Without single maturity dates 10,944  
Fair Value 10,944 10,029
Commercial mortgage backed securities    
Amortized Cost    
Without single maturity dates 4,950  
Amortized Cost 4,950 5,867
Fair Value    
Without single maturity dates 4,986  
Fair Value 4,986 6,088
Asset backed securities    
Amortized Cost    
Without single maturity dates 3,639  
Amortized Cost 3,639 3,283
Fair Value    
Without single maturity dates 3,654  
Fair Value $ 3,654 $ 3,329