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Investments - Available-for-Sale Securities by Contractual Maturity (Details) - Ameriprise Financial - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Amortized cost    
Due within one year $ 3,654  
Due after one year through five years 2,825  
Due after five years through 10 years 3,969  
Due after 10 years 5,039  
Total having single maturity dates 15,487  
Amortized Cost 51,443 $ 43,384
Fair value    
Due within one year 3,638  
Due after one year through five years 2,721  
Due after five years through 10 years 3,440  
Due after 10 years 4,765  
Total having single maturity dates 14,564  
Fair Value 48,193 40,811
Residential mortgage backed securities    
Amortized cost    
Without single maturity dates 21,090  
Amortized Cost 21,090 17,056
Fair value    
Without single maturity dates 19,289  
Fair Value 19,289 15,703
Commercial mortgage backed securities    
Amortized cost    
Without single maturity dates 6,489  
Amortized Cost 6,489 6,648
Fair value    
Without single maturity dates 6,041  
Fair Value 6,041 6,212
Asset backed securities    
Amortized cost    
Without single maturity dates 8,377  
Amortized Cost 8,377 6,408
Fair value    
Without single maturity dates 8,299  
Fair Value $ 8,299 $ 6,264