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v3.19.3

Segment Information (Operations By Segment) (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | $ 8,622 | $ 8,110 | $ 24,278 | $ 23,229
Net premiums earned | 8,327 | 7,908 | 23,355 | 22,599
Losses and loss expenses | 5,052 | 4,868 | 13,865 | 13,457
Policy benefits | 158 | 127 | 515 | 428
Policy acquisition costs | 1,603 | 1,504 | 4,611 | 4,432
Administrative expenses | 752 | 719 | 2,220 | 2,158
Underwriting income (loss) | 762 | 690 | 2,144 | 2,124
Net investment income (loss) | 873 | 823 | 2,568 | 2,457
Other (income) expense | (57) | (145) | (326) | (307)
Amortization of purchased intangibles | 76 | 83 | 229 | 253
Segment Income (loss) | 1,616 | 1,575 | 4,809 | 4,635
Net Realized Gains Losses | (155) | 19 | (475) | 35
Interest expense | 138 | 164 | 418 | 488
Chubb integration expenses | 2 | 16 | 9 | 39
Income tax expense | 230 | 183 | 626 | 536
Net income | 1,091 | 1,231 | 3,281 | 3,607
North America Commercial P&C Insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 3,452 | 3,199 | 9,937 | 9,342
Net premiums earned | 3,185 | 3,019 | 9,660 | 9,325
Losses and loss expenses | 2,051 | 1,881 | 6,238 | 5,873
Policy benefits | 0 | 0 | 0 | 0
Policy acquisition costs | 459 | 458 | 1,377 | 1,378
Administrative expenses | 256 | 251 | 755 | 735
Underwriting income (loss) | 419 | 429 | 1,290 | 1,339
Net investment income (loss) | 532 | 503 | 1,563 | 1,516
Other (income) expense | (1) | (1) | (4) | (20)
Amortization of purchased intangibles | 0 | 0 | 0 | 0
Segment Income (loss) | 952 | 933 | 2,857 | 2,875
North America Personal P&C Insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 1,251 | 1,218 | 3,616 | 3,601
Net premiums earned | 1,187 | 1,167 | 3,509 | 3,463
Losses and loss expenses | 674 | 860 | 2,178 | 2,474
Policy benefits | 0 | 0 | 0 | 0
Policy acquisition costs | 240 | 236 | 708 | 701
Administrative expenses | 72 | 69 | 211 | 202
Underwriting income (loss) | 201 | 2 | 412 | 86
Net investment income (loss) | 66 | 59 | 194 | 177
Other (income) expense | 1 | 0 | 2 | 1
Amortization of purchased intangibles | 3 | 4 | 9 | 10
Segment Income (loss) | 263 | 57 | 595 | 252
North America Agricultural Insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 938 | 884 | 1,534 | 1,380
Net premiums earned | 941 | 857 | 1,374 | 1,251
Losses and loss expenses | 866 | 719 | 1,155 | 955
Policy benefits | 0 | 0 | 0 | 0
Policy acquisition costs | 56 | 49 | 90 | 74
Administrative expenses | 4 | 2 | 9 | 0
Underwriting income (loss) | 15 | 87 | 120 | 222
Net investment income (loss) | 8 | 7 | 22 | 20
Other (income) expense | 0 | 0 | 1 | 1
Amortization of purchased intangibles | 7 | 7 | 21 | 21
Segment Income (loss) | 16 | 87 | 120 | 220
Overseas General Insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 2,228 | 2,081 | 6,881 | 6,664
Net premiums earned | 2,256 | 2,157 | 6,595 | 6,425
Losses and loss expenses | 1,154 | 1,114 | 3,385 | 3,263
Policy benefits | 0 | 0 | 0 | 0
Policy acquisition costs | 630 | 582 | 1,855 | 1,754
Administrative expenses | 257 | 252 | 771 | 757
Underwriting income (loss) | 215 | 209 | 584 | 651
Net investment income (loss) | 148 | 155 | 443 | 461
Other (income) expense | 3 | (7) | 10 | (12)
Amortization of purchased intangibles | 11 | 8 | 34 | 29
Segment Income (loss) | 349 | 363 | 983 | 1,095
Global Reinsurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 141 | 164 | 540 | 554
Net premiums earned | 160 | 157 | 487 | 492
Losses and loss expenses | 79 | 86 | 245 | 236
Policy benefits | 0 | 0 | 0 | 0
Policy acquisition costs | 42 | 40 | 127 | 120
Administrative expenses | 9 | 10 | 26 | 29
Underwriting income (loss) | 30 | 21 | 89 | 107
Net investment income (loss) | 55 | 63 | 166 | 192
Other (income) expense | (16) | (13) | (40) | (26)
Amortization of purchased intangibles | 0 | 0 | 0 | 0
Segment Income (loss) | 101 | 97 | 295 | 325
Life Insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 612 | 564 | 1,770 | 1,688
Net premiums earned | 598 | 551 | 1,730 | 1,643
Losses and loss expenses | 190 | 195 | 581 | 584
Policy benefits | 158 | 127 | 515 | 428
Policy acquisition costs | 176 | 139 | 454 | 405
Administrative expenses | 80 | 77 | 237 | 235
Underwriting income (loss) | (6) | 13 | (57) | (9)
Net investment income (loss) | 92 | 85 | 278 | 253
Other (income) expense | (10) | 20 | (57) | 24
Amortization of purchased intangibles | 1 | 0 | 2 | 1
Segment Income (loss) | 95 | 78 | 276 | 219
Corporate Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 0 | 0 | 0 | 0
Net premiums earned | 0 | 0 | 0 | 0
Losses and loss expenses | 38 | 13 | 83 | 72
Policy benefits | 0 | 0 | 0 | 0
Policy acquisition costs | 0 | 0 | 0 | 0
Administrative expenses | 74 | 58 | 211 | 200
Underwriting income (loss) | (112) | (71) | (294) | (272)
Net investment income (loss) | (28) | (49) | (98) | (162)
Other (income) expense | (34) | (144) | (238) | (275)
Amortization of purchased intangibles | 54 | 64 | 163 | 192
Segment Income (loss) | (160) | (40) | (317) | (351)
Net Realized Gains Losses | (155) | 19 | (475) | 35
Interest expense | 138 | 164 | 418 | 488
Chubb integration expenses | 2 | 16 | 9 | 39
Income tax expense | 230 | 183 | 626 | 536
Net income | $ (685) | $ (384) | $ (1,845) | $ (1,379)

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