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Investments - Summary of Fixed Maturity Securities by Rating (Details) - Ameriprise Financial - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
Investments |  |
Fixed maturity securities rated internally | $ 422 | $ 270
Amortized Cost | 46,896 | 43,384
Fair Value | 44,883 | 40,811
Holdings of single issuer greater than 10% of equity | 0 | 0
AAA |  |
Investments |  |
Amortized Cost | 33,517 | 30,900
Fair Value | 31,827 | 28,980
AA |  |
Investments |  |
Amortized Cost | 1,420 | 1,219
Fair Value | 1,470 | 1,249
A |  |
Investments |  |
Amortized Cost | 2,303 | 2,080
Fair Value | 2,369 | 2,097
BBB |  |
Investments |  |
Amortized Cost | 9,051 | 8,524
Fair Value | 8,661 | 7,890
Below investment grade |  |
Investments |  |
Amortized Cost | 605 | 661
Fair Value | 556 | 595
CLOs | Below investment grade |  |
Investments |  |
Amortized Cost | 1 | 1
Fair Value | $ 1 | $ 1
Total investments | Credit concentration risk | Fixed maturity securities |  |
Investments |  |
Percentage of total | 92.00% | 92.00%
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 | 71.00% | 71.00%
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 | 5.00% | 5.00%
Fixed maturity securities | Credit concentration risk | BBB |  |
Investments |  |
Percentage of total | 20.00% | 19.00%
Fixed maturity securities | Credit concentration risk | Below investment grade |  |
Investments |  |
Percentage of total | 1.00% | 2.00%
Fixed maturity securities | Credit concentration risk | GNMA, FNMA and FHLMC mortgage backed securities. | AAA |  |
Investments |  |
Percentage of total | 30.00% | 30.00%

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