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Investments - Available-for-Sale Securities by Contractual Maturity (Details) - Ameriprise Financial - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Amortized cost    
Due within one year $ 4,125  
Due after one year through five years 2,277  
Due after five years through 10 years 5,200  
Due after 10 years 5,799  
Total having single maturity dates 17,401  
Amortized Cost 53,006 $ 53,048
Fair value    
Due within one year 4,127  
Due after one year through five years 2,265  
Due after five years through 10 years 5,099  
Due after 10 years 6,076  
Total having single maturity dates 17,567  
Fair Value 52,417 51,562
Residential mortgage backed securities    
Amortized cost    
Without single maturity dates 23,598  
Amortized Cost 23,598 22,130
Fair value    
Without single maturity dates 23,009  
Fair Value 23,009 21,066
Commercial mortgage backed securities    
Amortized cost    
Without single maturity dates 5,459  
Amortized Cost 5,459 6,380
Fair value    
Without single maturity dates 5,283  
Fair Value 5,283 6,050
Asset backed securities    
Amortized cost    
Without single maturity dates 6,548  
Amortized Cost 6,548 8,353
Fair value    
Without single maturity dates 6,558  
Fair Value $ 6,558 $ 8,319