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v3.22.4

Business Segments (Revenues by Line of Business) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Total revenues | $ 11,879 | $ 11,908 | $ 10,808
Total operating revenues | 12,078 | 11,788 | 10,862
Net investment gains (losses) | (199) | 120 | (54)
Operating Segments | Specialty |  |  |
Total revenues | 5,209 | 5,004 | 4,585
Operating Segments | Commercial |  |  |
Total revenues | 4,441 | 4,199 | 3,861
Operating Segments | International |  |  |
Total revenues | 1,134 | 1,114 | 998
Operating Segments | Life & Group |  |  |
Total revenues | 1,276 | 1,457 | 1,355
Operating Segments | Corporate & Other |  |  |
Total revenues | 24 | 21 | 69
Eliminations |  |  |
Total revenues | (6) | (7) | (6)
Management & Professional Liability | Operating Segments | Specialty |  |  |
Total revenues | 2,771 | 2,776 | 2,577
Surety | Operating Segments | Specialty |  |  |
Total revenues | 652 | 604 | 596
Warranty & Alternative Risks | Operating Segments | Specialty |  |  |
Total revenues | 1,786 | 1,624 | 1,412
Middle Market | Operating Segments | Commercial |  |  |
Total revenues | 1,532 | 1,508 | 1,444
Construction | Operating Segments | Commercial |  |  |
Total revenues | 1,421 | 1,322 | 1,120
Small Business | Operating Segments | Commercial |  |  |
Total revenues | 581 | 558 | 482
Other Commercial | Operating Segments | Commercial |  |  |
Total revenues | 907 | 811 | 815
Canada | Operating Segments | International |  |  |
Total revenues | 366 | 344 | 291
Europe | Operating Segments | International |  |  |
Total revenues | 466 | 473 | 389
Hardy | Operating Segments | International |  |  |
Total revenues | $ 302 | $ 297 | $ 318

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