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Schedule I Summary of Investments - Other Than Investments in Affiliates (Details) $ in Millions | Dec. 31, 2022 USD ($)
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SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | $ 55,967
Amount at which shown on Balance Sheet | 52,560
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 | 5,573
Fair Value | 5,025
Amount at which shown on Balance Sheet | 5,025
States, municipalities and political subdivisions |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 6,718
Fair Value | 6,296
Amount at which shown on Balance Sheet | 6,296
Foreign government/government agencies |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 596
Fair Value | 547
Amount at which shown on Balance Sheet | 547
Public utilities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 1,871
Fair Value | 1,662
Amount at which shown on Balance Sheet | 1,662
All other corporate bonds |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 14,923
Fair Value | 13,571
Amount at which shown on Balance Sheet | 13,571
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 | 9,852
Fair Value | 9,130
Amount at which shown on Balance Sheet | 9,130
Total fixed maturities, available-for-sale |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 39,533
Fair Value | 36,231
Amount at which shown on Balance Sheet | 36,231
Fixed Income Securities, Fair Value Option [Member] |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 366
Fair Value | 333
Amount at which shown on Balance Sheet | 333
Industrial, miscellaneous and all other |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 1,289
Fair Value | 1,315
Amount at which shown on Balance Sheet | 1,315
Non-redeemable preferred stocks |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 542
Fair Value | 486
Amount at which shown on Balance Sheet | 486
Equity securities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 1,831
Fair Value | 1,801
Amount at which shown on Balance Sheet | 1,801
Mortgage loans [2] |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 6,036
Fair Value | 5,362
Amount at which shown on Balance Sheet | 6,000
Other investments |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 165
Fair Value | 159
Amount at which shown on Balance Sheet | 159
Short-term investments |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 3,859
Fair Value | 3,859
Amount at which shown on Balance Sheet | 3,859
Limited partnerships and other alternative investments [3] |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost | 4,177
Amount at which shown on Balance Sheet | $ 4,177

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