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v3.23.2

Segments of Operations - Revenues by segment and sub-segment (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Segment Reporting Information [Line Items] |  |  |  |
Total premiums earned | $ 1,507 | $ 1,393 | $ 2,944 | $ 2,695
Net investment income | 198 | 168 | 415 | 398
Other income | 25 | 32 | 57 | 62
Revenues before realized gains (losses) | 1,842 | 1,632 | 3,628 | 3,235
Realized gains (losses) on securities | (2) | (93) | (48) | (108)
Total revenues | 1,840 | 1,539 | 3,580 | 3,127
Property and Casualty Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total premiums earned | 1,507 | 1,393 | 2,944 | 2,695
Net investment income | 191 | 156 | 398 | 379
Other income | 3 | 6 | 8 | 10
Revenues before realized gains (losses) | 1,701 | 1,555 | 3,350 | 3,084
Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues before realized gains (losses) | 141 | 77 | 278 | 151
Property and transportation | Property and Casualty Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total premiums earned | 534 | 505 | 1,009 | 948
Specialty casualty | Property and Casualty Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total premiums earned | 711 | 657 | 1,415 | 1,296
Specialty financial | Property and Casualty Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total premiums earned | 195 | 171 | 391 | 334
Other specialty | Property and Casualty Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total premiums earned | $ 67 | $ 60 | $ 129 | $ 117

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