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v3.23.2

Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Recurring - USD ($) $ in Millions | Jun. 30, 2023 | Dec. 31, 2022
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Assets and Liabilities Measured at Fair Value [Abstract] |  |
Debt securities | $ 38,728 | $ 37,627
Debt securities, trading | 198 | 70
Debt securities | 38,926 | 37,697
Equity securities | 1,051 | 1,139
Short term and other | 4,316 | 4,706
Receivables | 20 | 19
Payable to brokers | (54) | (82)
Corporate bonds and other |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Debt securities | 23,394 | 22,117
States, municipalities and political subdivisions |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Debt securities | 7,810 | 8,317
Asset-backed |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Debt securities | 7,524 | 7,193
Level 1 |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Debt securities | 137 | 120
Debt securities, trading | 198 | 1
Debt securities | 335 | 121
Equity securities | 603 | 669
Short term and other | 4,274 | 4,539
Receivables |  |
Payable to brokers | (54) | (82)
Level 1 | Corporate bonds and other |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Debt securities | 137 | 120
Level 1 | States, municipalities and political subdivisions |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Debt securities |  |
Level 1 | Asset-backed |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Debt securities |  |
Level 2 |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Debt securities | 36,694 | 35,866
Debt securities, trading |  | 69
Debt securities | 36,694 | 35,935
Equity securities | 422 | 435
Short term and other | 42 | 167
Receivables | 20 | 19
Payable to brokers |  |
Level 2 | Corporate bonds and other |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Debt securities | 22,286 | 21,187
Level 2 | States, municipalities and political subdivisions |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Debt securities | 7,767 | 8,274
Level 2 | Asset-backed |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Debt securities | 6,641 | 6,405
Level 3 |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Debt securities | 1,897 | 1,641
Debt securities, trading |  |
Debt securities | 1,897 | 1,641
Equity securities | 26 | 35
Short term and other |  |
Receivables |  |
Payable to brokers |  |
Level 3 | Corporate bonds and other |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Debt securities | 971 | 810
Level 3 | States, municipalities and political subdivisions |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Debt securities | 43 | 43
Level 3 | Asset-backed |  |
Assets and Liabilities Measured at Fair Value [Abstract] |  |
Debt securities | $ 883 | $ 788

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