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Investments - Available-for-Sale Securities by Contractual Maturity (Details) - Ameriprise Financial - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Amortized Cost    
Due within one year $ 4,305  
Due after one year through five years 2,621  
Due after five years through 10 years 4,280  
Due after 10 years 4,979  
Total having single maturity dates 16,185  
Amortized Cost 53,048 $ 43,384
Fair Value    
Due within one year 4,294  
Due after one year through five years 2,587  
Due after five years through 10 years 4,018  
Due after 10 years 5,228  
Total having single maturity dates 16,127  
Fair Value 51,562 40,811
Residential mortgage backed securities    
Amortized Cost    
Without single maturity dates 22,130  
Amortized Cost 22,130 17,056
Fair Value    
Without single maturity dates 21,066  
Fair Value 21,066 15,703
Commercial mortgage backed securities    
Amortized Cost    
Without single maturity dates 6,380  
Amortized Cost 6,380 6,648
Fair Value    
Without single maturity dates 6,050  
Fair Value 6,050 6,212
Asset backed securities    
Amortized Cost    
Without single maturity dates 8,353  
Amortized Cost 8,353 6,408
Fair Value    
Without single maturity dates 8,319  
Fair Value $ 8,319 $ 6,264