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Schedule I Summary of Investments - Other Than Investments in Affiliates (Details) $ in Millions | Dec. 31, 2019 USD ($)
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SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | $ 51,012
Amount at which shown on Balance Sheet | 53,030
U.S. government and government agencies and authorities (guaranteed and sponsored) |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 5,478
Fair Value | 5,644
Amount at which shown on Balance Sheet | 5,644
States, municipalities and political subdivisions |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 8,763
Fair Value | 9,498
Amount at which shown on Balance Sheet | 9,498
Foreign government/government agencies |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 1,057
Fair Value | 1,123
Amount at which shown on Balance Sheet | 1,123
Public utilities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 2,019
Fair Value | 2,147
Amount at which shown on Balance Sheet | 2,147
All other corporate bonds |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 14,416
Fair Value | 15,249
Amount at which shown on Balance Sheet | 15,249
All other mortgage-backed and asset-backed securities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 8,345
Fair Value | 8,487
Amount at which shown on Balance Sheet | 8,487
Total fixed maturities, available-for-sale |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 40,078
Fair Value | 42,148
Amount at which shown on Balance Sheet | 42,148
Fixed maturities, at fair value using fair value option |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 11
Fair Value | 11
Amount at which shown on Balance Sheet | 11
Total fixed maturities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 40,089
Fair Value | 42,159
Amount at which shown on Balance Sheet | 42,159
Industrial, miscellaneous and all other |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 1,471
Fair Value | 1,471
Amount at which shown on Balance Sheet | 1,471
Non-redeemable preferred stocks |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 186
Fair Value | 186
Amount at which shown on Balance Sheet | 186
Equity securities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 1,657
Fair Value | 1,657
Amount at which shown on Balance Sheet | 1,657
Mortgage loans |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 4,215
Fair Value | 4,350
Amount at which shown on Balance Sheet | 4,215
Futures, options and miscellaneous |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 376
Fair Value | 320
Amount at which shown on Balance Sheet | 320
Short-term investments |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 2,917
Fair Value | 2,921
Amount at which shown on Balance Sheet | 2,921
Investments in partnerships and trusts |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 1,758
Amount at which shown on Balance Sheet | $ 1,758

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