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Investments - Available-for-Sale Securities by Contractual Maturity (Details) - Ameriprise Financial - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Amortized Cost    
Due within one year $ 3,537  
Due after one year through five years 2,423  
Due after five years through 10 years 5,507  
Due after 10 years 6,273  
Total having single maturity dates 17,740  
Amortized Cost 53,926 $ 53,048
Fair Value    
Due within one year 3,536  
Due after one year through five years 2,361  
Due after five years through 10 years 5,216  
Due after 10 years 6,128  
Total having single maturity dates 17,241  
Fair Value 52,153 51,562
Residential mortgage backed securities    
Amortized Cost    
Without single maturity dates 24,396  
Amortized Cost 24,396 22,130
Fair Value    
Without single maturity dates 23,344  
Fair Value 23,344 21,066
Commercial mortgage backed securities    
Amortized Cost    
Without single maturity dates 5,339  
Amortized Cost 5,339 6,380
Fair Value    
Without single maturity dates 5,126  
Fair Value 5,126 6,050
Asset backed securities    
Amortized Cost    
Without single maturity dates 6,451  
Amortized Cost 6,451 8,353
Fair Value    
Without single maturity dates 6,442  
Fair Value $ 6,442 $ 8,319