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v3.25.2

Investments (Equity Securities) (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity Securities, FV-NI, Unrealized Gains (Losses) | $ 2,695 | $ 2,388
Equity securities | 790 | 712
Common Stock |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity Securities, FV-NI, Cost | 411 | 451
Equity Securities, FV-NI, Unrealized Gains (Losses) | 250 | 167
Equity securities | 661 | 618
Non-redeemable preferred Stock |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity Securities, FV-NI, Cost | 130 | 93
Equity Securities, FV-NI, Unrealized Gains (Losses) | (1) | 1
Equity securities | 129 | 94
Equity Securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Equity Securities, FV-NI, Cost | 541 | 544
Equity Securities, FV-NI, Unrealized Gains (Losses) | 249 | 168
Equity securities | $ 790 | $ 712

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