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Investments (Rating info) (Details) - USD ($) $ in Millions | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Investments |  |  |
Percentage of GNMA, FNMA and FHLMC securities rated AAA |  | 34.00% | 45.00%
Ameriprise Financial [Member] |  |  |
Investments |  |  |
Number of holdings of other than GNMA, FNMA, and FHLMC having greater than 10% of total equity |  | 0 |
Ameriprise Financial [Member] | AAA [Member] |  |  |
Investments |  |  |
Amortized cost |  | $ 20,156 | $ 18,256
Fair value |  | $ 20,563 | $ 18,437
Percent of total fair value |  | 57.00% | 56.00%
Ameriprise Financial [Member] | AA [Member] |  |  |
Investments |  |  |
Amortized cost |  | $ 1,120 | $ 1,113
Fair value |  | $ 1,359 | $ 1,304
Percent of total fair value |  | 4.00% | 4.00%
Ameriprise Financial [Member] | A [Member] |  |  |
Investments |  |  |
Amortized cost |  | $ 2,905 | $ 3,008
Fair value |  | $ 3,459 | $ 3,474
Percent of total fair value |  | 9.00% | 10.00%
Ameriprise Financial [Member] | BBB [Member] |  |  |
Investments |  |  |
Amortized cost |  | $ 7,841 | $ 8,178
Fair value |  | $ 8,923 | $ 9,102
Percent of total fair value |  | 25.00% | 28.00%
Ameriprise Financial [Member] | Below investment grade [Member] |  |  |
Investments |  |  |
Amortized cost | [1] | $ 1,592 | $ 777
Fair value | [1] | $ 1,655 | $ 812
Percent of total fair value |  | 5.00% | 2.00%
Ameriprise Financial [Member] | Total fixed maturities [Member] |  |  |
Investments |  |  |
Amortized cost |  | $ 33,614 | $ 31,332
Fair value |  | $ 35,959 | $ 33,129
Percent of total fair value |  | 100.00% | 100.00%
Ameriprise Financial [Member] | Interest in CLOs managed by the Company [Member] | Below investment grade [Member] |  |  |
Investments |  |  |
Amortized cost |  | $ 4 | $ 5
Fair value |  | $ 2 | $ 6
[1] | The amortized cost and fair value of below investment grade securities includes interest in CLOs managed by the Company of $4 million and $2 million, respectively, as of September 30, 2020, and $5 million and $6 million, respectively, as of December 31, 2019. These securities are not rated but are included in below investment grade due to their risk characteristics.

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