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v3.25.1

Claim and Claim Adjustment Expense Reserves (Net Prior Year Development) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Segment Reporting Information [Line Items] |  |
Pretax (favorable) unfavorable premium development, excluding Life & Group | $ 83 | $ (7)
Specialty | Property and Casualty Segments |  |
Segment Reporting Information [Line Items] |  |
Pretax (favorable) unfavorable premium development, excluding Life & Group | 10 | (5)
Commercial | Property and Casualty Segments |  |
Segment Reporting Information [Line Items] |  |
Pretax (favorable) unfavorable premium development, excluding Life & Group | 51 | (2)
International | Property and Casualty Segments |  |
Segment Reporting Information [Line Items] |  |
Pretax (favorable) unfavorable premium development, excluding Life & Group | 0 | 0
Corporate & Other |  |
Segment Reporting Information [Line Items] |  |
Pretax (favorable) unfavorable premium development, excluding Life & Group | $ 22 | $ 0

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- Definition Pretax Favorable Unfavorable Premium Development, excluding Life & Group + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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