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Investments - Available-for-Sale Securities by Contractual Maturity (Details) - Ameriprise Financial - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Amortized Cost    
Due within one year $ 1,680  
Due after one year through five years 2,247  
Due after five years through 10 years 3,662  
Due after 10 years 4,237  
Total having single maturity dates 11,826  
Amortized Cost 39,284 $ 30,541
Fair Value    
Due within one year 1,671  
Due after one year through five years 2,155  
Due after five years through 10 years 3,086  
Due after 10 years 4,056  
Total having single maturity dates 10,968  
Fair Value 36,386 32,050
Residential mortgage backed securities    
Amortized Cost    
Without single maturity dates 15,825  
Amortized Cost 15,825 10,927
Fair Value    
Without single maturity dates 14,404  
Fair Value 14,404 10,944
Commercial mortgage backed securities    
Amortized Cost    
Without single maturity dates 6,041  
Amortized Cost 6,041 4,950
Fair Value    
Without single maturity dates 5,606  
Fair Value 5,606 4,986
Asset backed securities    
Amortized Cost    
Without single maturity dates 5,592  
Amortized Cost 5,592 3,639
Fair Value    
Without single maturity dates 5,408  
Fair Value $ 5,408 $ 3,654