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v3.25.3

Segments of Operations - Earnings before income taxes by segment and sub-segment (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Earnings before realized gains and income taxes | $ 255 | $ 231 | $ 676 | $ 794
Realized gains (losses) on securities | 12 | (2) | 17 | 10
Realized gain on subsidiaries | 1 | 0 | 1 | 0
Earnings before income taxes | 268 | 229 | 694 | 804
Operating segments | Property and Casualty Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Property and casualty insurance underwriting | 138 | 115 | 345 | 418
Investment and other income, net | 190 | 176 | 502 | 532
Earnings before realized gains and income taxes | 328 | 291 | 847 | 950
Operating segments | Property and Casualty Insurance | Property and transportation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Property and casualty insurance underwriting | 55 | 33 | 119 | 133
Operating segments | Property and Casualty Insurance | Specialty casualty |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Property and casualty insurance underwriting | 33 | 63 | 102 | 210
Operating segments | Property and Casualty Insurance | Specialty financial |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Property and casualty insurance underwriting | 51 | 21 | 126 | 79
Operating segments | Property and Casualty Insurance | Other lines |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Property and casualty insurance underwriting | (1) | (2) | (2) | (4)
Operating segments | Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Earnings before realized gains and income taxes | $ (73) | $ (60) | $ (171) | $ (156)

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