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v3.20.1

Segment Information (Operations By Segment) (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Segment Reporting Information [Line Items] |  |
Net premiums written | $ 7,977 | $ 7,313
Net premiums earned | 7,794 | 7,137
Losses and loss expenses | 4,485 | 4,098
Policy benefits | 129 | 196
Policy acquisition costs | 1,615 | 1,464
Administrative expenses | 741 | 710
Underwriting income (loss) | 824 | 669
Net investment income (loss) | 861 | 836
Other (income) expense | 55 | (39)
Amortization of purchased intangibles | 73 | 76
Segment Income (loss) | 1,557 | 1,468
Net Realized Gains Losses | (958) | (97)
Interest expense | 132 | 140
Chubb integration expenses | 0 | 3
Income tax expense | 215 | 188
Net income | 252 | 1,040
North America Commercial P&C Insurance [Member] |  |
Segment Reporting Information [Line Items] |  |
Net premiums written | 3,252 | 2,951
Net premiums earned | 3,376 | 3,085
Losses and loss expenses | 2,181 | 1,973
Policy benefits | 0 | 0
Policy acquisition costs | 492 | 459
Administrative expenses | 259 | 240
Underwriting income (loss) | 444 | 413
Net investment income (loss) | 516 | 510
Other (income) expense | (3) | (5)
Amortization of purchased intangibles | 0 | 0
Segment Income (loss) | 963 | 928
North America Personal P&C Insurance [Member] |  |
Segment Reporting Information [Line Items] |  |
Net premiums written | 1,107 | 1,056
Net premiums earned | 1,200 | 1,154
Losses and loss expenses | 683 | 757
Policy benefits | 0 | 0
Policy acquisition costs | 245 | 231
Administrative expenses | 68 | 68
Underwriting income (loss) | 204 | 98
Net investment income (loss) | 66 | 64
Other (income) expense | 2 | 0
Amortization of purchased intangibles | 3 | 3
Segment Income (loss) | 265 | 159
North America Agricultural Insurance [Member] |  |
Segment Reporting Information [Line Items] |  |
Net premiums written | 157 | 130
Net premiums earned | 94 | 55
Losses and loss expenses | 63 | (27)
Policy benefits | 0 | 0
Policy acquisition costs | 11 | 7
Administrative expenses | 4 | 1
Underwriting income (loss) | 16 | 74
Net investment income (loss) | 9 | 10
Other (income) expense | 0 | 0
Amortization of purchased intangibles | 7 | 7
Segment Income (loss) | 18 | 77
Overseas General Insurance [Member] |  |
Segment Reporting Information [Line Items] |  |
Net premiums written | 2,598 | 2,395
Net premiums earned | 2,307 | 2,114
Losses and loss expenses | 1,258 | 1,106
Policy benefits | 0 | 0
Policy acquisition costs | 642 | 596
Administrative expenses | 258 | 249
Underwriting income (loss) | 149 | 163
Net investment income (loss) | 145 | 144
Other (income) expense | 4 | 4
Amortization of purchased intangibles | 12 | 11
Segment Income (loss) | 278 | 292
Global Reinsurance [Member] |  |
Segment Reporting Information [Line Items] |  |
Net premiums written | 218 | 202
Net premiums earned | 186 | 168
Losses and loss expenses | 87 | 76
Policy benefits | 0 | 0
Policy acquisition costs | 45 | 43
Administrative expenses | 10 | 10
Underwriting income (loss) | 44 | 39
Net investment income (loss) | 54 | 56
Other (income) expense | (15) | (9)
Amortization of purchased intangibles | 0 | 0
Segment Income (loss) | 113 | 104
Life Insurance [Member] |  |
Segment Reporting Information [Line Items] |  |
Net premiums written | 645 | 579
Net premiums earned | 631 | 561
Losses and loss expenses | 202 | 202
Policy benefits | 129 | 196
Policy acquisition costs | 180 | 128
Administrative expenses | 76 | 79
Underwriting income (loss) | 44 | (44)
Net investment income (loss) | 95 | 89
Other (income) expense | 44 | (40)
Amortization of purchased intangibles | 1 | 0
Segment Income (loss) | 94 | 85
Corporate Segment [Member] |  |
Segment Reporting Information [Line Items] |  |
Net premiums written | 0 | 0
Net premiums earned | 0 | 0
Losses and loss expenses | 11 | 11
Policy benefits | 0 | 0
Policy acquisition costs | 0 | 0
Administrative expenses | 66 | 63
Underwriting income (loss) | (77) | (74)
Net investment income (loss) | (24) | (37)
Other (income) expense | 23 | 11
Amortization of purchased intangibles | 50 | 55
Segment Income (loss) | (174) | (177)
Net Realized Gains Losses | (958) | (97)
Interest expense | 132 | 140
Chubb integration expenses |  | 3
Income tax expense | 215 | 188
Net income | $ (1,479) | $ (605)

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