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v3.25.3

Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
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Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | $ 44,116 | $ 41,827
Corporate bonds and other |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | 25,461 | 24,944
States, municipalities and political subdivisions |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | 8,376 | 6,804
Asset-backed |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | 8,853 | 8,416
Fair Value, Recurring |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | 43,636 | 41,061
Fixed maturities trading | 480 | 766
Total fixed maturities | 44,116 | 41,827
Equity securities | 1,295 | 1,064
Short-term and other | 5,222 | 4,453
Receivables | 1 | 5
Payable to brokers | (34) | (88)
Fair Value, Recurring | Corporate bonds and other |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | 26,407 | 25,841
Fair Value, Recurring | States, municipalities and political subdivisions |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | 8,376 | 6,804
Fair Value, Recurring | Asset-backed |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | 8,853 | 8,416
Fair Value, Recurring | Level 1 |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | 227 | 223
Fixed maturities trading | 415 | 766
Total fixed maturities | 642 | 989
Equity securities | 792 | 603
Short-term and other | 5,170 | 4,383
Receivables |  |
Payable to brokers | (34) | (88)
Fair Value, Recurring | Level 1 | Corporate bonds and other |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | 227 | 223
Fair Value, Recurring | Level 1 | States, municipalities and political subdivisions |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale |  |
Fair Value, Recurring | Level 1 | Asset-backed |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale |  |
Fair Value, Recurring | Level 2 |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | 41,006 | 38,642
Fixed maturities trading | 65 |
Total fixed maturities | 41,071 | 38,642
Equity securities | 493 | 441
Short-term and other | 52 | 70
Receivables | 1 | 5
Payable to brokers |  |
Fair Value, Recurring | Level 2 | Corporate bonds and other |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | 24,780 | 24,340
Fair Value, Recurring | Level 2 | States, municipalities and political subdivisions |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | 8,332 | 6,762
Fair Value, Recurring | Level 2 | Asset-backed |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | 7,894 | 7,540
Fair Value, Recurring | Level 3 |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | 2,403 | 2,196
Fixed maturities trading |  |
Total fixed maturities | 2,403 | 2,196
Equity securities | 10 | 20
Short-term and other |  |
Receivables |  |
Payable to brokers |  |
Fair Value, Recurring | Level 3 | Corporate bonds and other |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | 1,400 | 1,278
Fair Value, Recurring | Level 3 | States, municipalities and political subdivisions |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | 44 | 42
Fair Value, Recurring | Level 3 | Asset-backed |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Fixed maturities available-for-sale | $ 959 | $ 876

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