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v3.25.2

Segment information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | $ 14,196 | $ 13,360 | $ 26,842 | $ 25,581
Net premiums earned | 13,125 | 12,292 | 25,125 | 23,875
Losses and loss expenses | 6,572 | 6,431 | 13,468 | 12,158
Policy acquisition costs | 2,415 | 2,226 | 4,728 | 4,433
Administrative expenses | 1,125 | 1,094 | 2,205 | 2,164
Other (income) expense | (655) | (110) | (738) | (301)
Amortization of purchased intangibles | 74 | 80 | 149 | 160
Segment Income (loss) | 3,508 | 3,173 | 5,739 | 6,190
Net realized gains (losses) | 160 | 104 | 44 | 3
Market risk benefits gains (losses) | (17) | (29) | (109) | (8)
Interest Income (Expense), Net | 181 | 182 | 362 | 360
Integration expenses | 2 | 7 | 2 | 14
Segment Reporting, Other Segment Item, Amount | (38) | (82) |  | (81)
Income before income tax | 3,716 | 2,706 | 5,380 | 5,342
North America Commercial P&C Insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 5,723 | 5,501 | 10,510 | 10,190
Net premiums earned | 5,177 | 4,900 | 10,165 | 9,780
Losses and loss expenses | 3,258 | 3,074 | 6,289 | 6,249
Segment Liability for Future Policy Benefits, Period Expense (Income) | 0 | 0 | 0 | 0
Policy acquisition costs | 705 | 660 | 1,424 | 1,348
Administrative expenses | 357 | 327 | 701 | 655
Underwriting Income (Loss) | 857 | 839 | 1,751 | 1,528
Segment Net Investment Income | 938 | 863 | 1,867 | 1,689
Other (income) expense | 8 | 15 | 16 | 22
Amortization of purchased intangibles | 2 | 0 | 3 | 0
Segment Income (loss) | 1,785 | 1,687 | 3,599 | 3,195
North American Personal P&C Insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 1,938 | 1,776 | 3,490 | 3,232
Net premiums earned | 1,681 | 1,512 | 3,255 | 2,983
Losses and loss expenses | 822 | 876 | 2,915 | 1,775
Segment Liability for Future Policy Benefits, Period Expense (Income) | 0 | 0 | 0 | 0
Policy acquisition costs | 332 | 299 | 662 | 599
Administrative expenses | 82 | 88 | 169 | 174
Underwriting Income (Loss) | 445 | 249 | (491) | 435
Segment Net Investment Income | 118 | 108 | 238 | 210
Other (income) expense | 0 | (2) | 1 | (1)
Amortization of purchased intangibles | 2 | 2 | 4 | 4
Segment Income (loss) | 561 | 357 | (258) | 642
North America Agricultural Insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 733 | 758 | 1,009 | 1,007
Net premiums earned | 598 | 626 | 763 | 754
Losses and loss expenses | 483 | 543 | 575 | 592
Segment Liability for Future Policy Benefits, Period Expense (Income) | 0 | 0 | 0 | 0
Policy acquisition costs | 48 | 45 | 65 | 66
Administrative expenses | 2 | 3 | 4 | 5
Underwriting Income (Loss) | 65 | 35 | 119 | 91
Segment Net Investment Income | 19 | 21 | 43 | 42
Other (income) expense | 0 | 0 | 1 | 0
Amortization of purchased intangibles | 6 | 7 | 12 | 13
Segment Income (loss) | 78 | 49 | 149 | 120
Overseas General Insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 3,620 | 3,334 | 7,523 | 7,169
Net premiums earned | 3,542 | 3,347 | 6,751 | 6,545
Losses and loss expenses | 1,789 | 1,671 | 3,186 | 3,097
Segment Liability for Future Policy Benefits, Period Expense (Income) | 129 | 92 | 242 | 192
Policy acquisition costs | 913 | 842 | 1,750 | 1,665
Administrative expenses | 369 | 348 | 699 | 679
Underwriting Income (Loss) | 342 | 394 | 874 | 912
Segment Net Investment Income | 278 | 283 | 559 | 550
Other (income) expense | 5 | 4 | 11 | 9
Amortization of purchased intangibles | 19 | 20 | 38 | 40
Segment Income (loss) | 596 | 653 | 1,384 | 1,413
Global Reinsurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 380 | 411 | 788 | 770
Net premiums earned | 338 | 339 | 706 | 634
Losses and loss expenses | 132 | 155 | 374 | 292
Segment Liability for Future Policy Benefits, Period Expense (Income) | 0 | 0 | 0 | 0
Policy acquisition costs | 98 | 80 | 198 | 161
Administrative expenses | 10 | 11 | 20 | 20
Underwriting Income (Loss) | 98 | 93 | 114 | 161
Segment Net Investment Income | 85 | 58 | 155 | 115
Other (income) expense | 0 | 0 | 0 | 0
Amortization of purchased intangibles | 0 | 0 | 0 | 0
Segment Income (loss) | 183 | 151 | 269 | 276
Life Insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 1,802 | 1,580 | 3,522 | 3,213
Net premiums earned | 1,789 | 1,568 | 3,485 | 3,179
Losses and loss expenses | 20 | 22 | 46 | 54
Segment Liability for Future Policy Benefits, Period Expense (Income) | 1,249 | 1,031 | 2,412 | 2,101
Policy acquisition costs | 319 | 300 | 629 | 594
Administrative expenses | 199 | 218 | 401 | 425
Segment Net Investment Income | 274 | 258 | 545 | 488
Other (income) expense | (37) | (32) | (72) | (72)
Amortization of purchased intangibles | 8 | 11 | 18 | 21
Segment Income (loss) | 305 | 276 | 596 | 544
Segment Corporate and Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Underwriting Income (Loss) | (176) | (192) | (295) | (309)
Segment Net Investment Income | (29) | (32) | (56) | (58)
Other (income) expense | (528) | 7 | (495) | (61)
Amortization of purchased intangibles | $ 37 | $ 40 | $ 74 | $ 82

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