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Consolidated Summary of Investments - Other Than Investments in Related Parties (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 or Amortized Cost | $ 462,275
Estimated Fair Value | 433,293
Fixed Maturities [Member] |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 306,025
Estimated Fair Value | 276,780
Amount at Which Shown on Balance Sheet | 276,780
Foreign government |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 50,047
Estimated Fair Value | 46,747
Amount at Which Shown on Balance Sheet | 46,747
U.S. government and agency |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 35,658
Estimated Fair Value | 32,229
Amount at Which Shown on Balance Sheet | 32,229
Public utilities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 11,476
Estimated Fair Value | 10,717
Amount at Which Shown on Balance Sheet | 10,717
Municipals |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 13,548
Estimated Fair Value | 12,152
Amount at Which Shown on Balance Sheet | 12,152
All other corporate bonds |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 135,710
Estimated Fair Value | 120,916
Amount at Which Shown on Balance Sheet | 120,916
Total bonds |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 246,439
Estimated Fair Value | 222,761
Amount at Which Shown on Balance Sheet | 222,761
Mortgage-backed, asset-backed and collateralized loan obligations securities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 58,610
Estimated Fair Value | 53,050
Amount at Which Shown on Balance Sheet | 53,050
Redeemable preferred stock |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 976
Estimated Fair Value | 969
Amount at Which Shown on Balance Sheet | 969
FVO Securities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 9,106
Estimated Fair Value | 9,668
Amount at Which Shown on Balance Sheet | 9,668
Equity Securities, Investment Summary [Member] |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 1,495
Estimated Fair Value | 1,684
Amount at Which Shown on Balance Sheet | 1,684
Industrial, miscellaneous and all other |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 335
Estimated Fair Value | 504
Amount at Which Shown on Balance Sheet | 504
Public utilities |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 0
Estimated Fair Value | 2
Amount at Which Shown on Balance Sheet | 2
Banks, trust and insurance companies |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 1,012
Estimated Fair Value | 1,036
Amount at Which Shown on Balance Sheet | 1,036
Non-redeemable Preferred Stock |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 148
Estimated Fair Value | 142
Amount at Which Shown on Balance Sheet | 142
Mortgage loans |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 84,290
Estimated Fair Value | 83,763
Policy loans |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 8,874
Estimated Fair Value | 8,874
Real estate and real estate joint ventures |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 12,955
Estimated Fair Value | 12,955
Real estate acquired in satisfaction of debt |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 182
Estimated Fair Value | 182
Other limited partnership interests |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 14,414
Estimated Fair Value | 14,414
Short-term investments |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 4,870
Estimated Fair Value | 4,935
Other invested assets |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |
Cost or Amortized Cost | 20,064
Estimated Fair Value | $ 20,038

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