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Schedule I - Summary Of Investments - Other Than Investments In Related Parties (Details) $ in Millions | Dec. 31, 2022 USD ($)
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Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | $ 31,807
Total investments and cash, Market Value | 29,853
Total investments and cash, Amount Shown in Balance Sheet | 29,872
Fixed Maturity Securities [Member] | Available For Sale [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 24,191
Total investments and cash, Market Value | 22,236
Total investments and cash, Amount Shown in Balance Sheet | 22,236
Fixed Maturity Securities [Member] | Held-to-Maturity [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 848
Total investments and cash, Market Value | 821
Total investments and cash, Amount Shown in Balance Sheet | 839
U.S. Government and Government Agencies [Member] | Available For Sale [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 1,334
Total investments and cash, Market Value | 1,257
Total investments and cash, Amount Shown in Balance Sheet | 1,257
State, Municipalities and Political Subdivisions [Member] | Available For Sale [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 444
Total investments and cash, Market Value | 413
Total investments and cash, Amount Shown in Balance Sheet | 413
Foreign Government Securities [Member] | Available For Sale [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 1,586
Total investments and cash, Market Value | 1,415
Total investments and cash, Amount Shown in Balance Sheet | 1,415
Foreign Corporate Securities [Member] | Available For Sale [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 5,143
Total investments and cash, Market Value | 4,596
Total investments and cash, Amount Shown in Balance Sheet | 4,596
Foreign Corporate Securities [Member] | Held-to-Maturity [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 28
Total investments and cash, Market Value | 28
Total investments and cash, Amount Shown in Balance Sheet | 27
Public Utilities [Member] | Available For Sale [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 218
Total investments and cash, Market Value | 203
Total investments and cash, Amount Shown in Balance Sheet | 203
All Other Corporate Bonds [Member] | Available For Sale [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 10,688
Total investments and cash, Market Value | 10,013
Total investments and cash, Amount Shown in Balance Sheet | 10,013
All Other Corporate Bonds [Member] | Held-to-Maturity [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 813
Total investments and cash, Market Value | 786
Total investments and cash, Amount Shown in Balance Sheet | 806
Mortgage-Backed Securities: Commercial [Member] | Available For Sale [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 1,023
Total investments and cash, Market Value | 919
Total investments and cash, Amount Shown in Balance Sheet | 919
Mortgage-Backed Securities: Commercial [Member] | Held-to-Maturity [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 7
Total investments and cash, Market Value | 7
Total investments and cash, Amount Shown in Balance Sheet | 7
Mortgage Backed Securities: Agency residential [Member] | Available For Sale [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 3,382
Total investments and cash, Market Value | 3,099
Total investments and cash, Amount Shown in Balance Sheet | 3,099
Mortgage Backed Securities: Non-agency residential [Member] | Available For Sale [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 5
Total investments and cash, Market Value | 4
Total investments and cash, Amount Shown in Balance Sheet | 4
Redeemable Preferred Stock [Member] | Available For Sale [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 368
Total investments and cash, Market Value | 316
Total investments and cash, Amount Shown in Balance Sheet | 316
Equity Securities [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 252
Total investments and cash, Market Value | 281
Total investments and cash, Amount Shown in Balance Sheet | 281
Short Term Investments [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 1,032
Total investments and cash, Market Value | 1,032
Total investments and cash, Amount Shown in Balance Sheet | 1,032
Other Invested Assets [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 4,085
Total investments and cash, Market Value | 4,085
Total investments and cash, Amount Shown in Balance Sheet | 4,085
Cash [Member] |
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items] |
Total investments and cash, Cost | 1,398
Total investments and cash, Market Value | 1,398
Total investments and cash, Amount Shown in Balance Sheet | $ 1,398

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