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Investments - Summary of Fixed Maturity Securities by Rating (Details) - Ameriprise Financial - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Investments    
Fixed maturity securities rated internally $ 400 $ 605
Amortized Cost 30,541 33,601
Fair Value 32,050 36,283
Holdings of single issuer greater than 10% of equity 0 0
AAA    
Investments    
Amortized Cost 20,563 19,815
Fair Value 20,625 20,253
AA    
Investments    
Amortized Cost 727 1,082
Fair Value 898 1,312
A    
Investments    
Amortized Cost 1,775 2,953
Fair Value 2,129 3,534
BBB    
Investments    
Amortized Cost 6,495 8,271
Fair Value 7,268 9,542
Below investment grade    
Investments    
Amortized Cost [1] 981 1,480
Fair Value [1] 1,130 1,642
CLOs | Below investment grade    
Investments    
Amortized Cost 1 3
Fair Value $ 2 $ 3
Total investments | Credit concentration risk | Fixed maturity securities    
Investments    
Percentage of total 89.00% 88.00%
Fixed maturity securities | Credit concentration risk    
Investments    
Percentage of total 100.00% 100.00%
Fixed maturity securities | Credit concentration risk | AAA    
Investments    
Percentage of total 64.00% 56.00%
Fixed maturity securities | Credit concentration risk | AA    
Investments    
Percentage of total 3.00% 3.00%
Fixed maturity securities | Credit concentration risk | A    
Investments    
Percentage of total 7.00% 10.00%
Fixed maturity securities | Credit concentration risk | BBB    
Investments    
Percentage of total 23.00% 26.00%
Fixed maturity securities | Credit concentration risk | Below investment grade    
Investments    
Percentage of total 3.00% 5.00%
Fixed maturity securities | Credit concentration risk | GNMA, FNMA and FHLMC mortgage backed securities. | AAA    
Investments    
Percentage of total 30.00% 33.00%
[1] The amortized cost and fair value of below investment grade securities includes interest in non-consolidated CLOs managed by the Company of $1 million and $2 million, respectively, as of December 31, 2021 and $3 million as of December 31, 2020. These securities are not rated but are included in below investment grade due to their risk characteristics.