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v3.19.3.a.u2

Information provided in connection with outstanding debt of subsidiaries (Condensed Consolidating Statement Of Operations and Comprehensive Income) (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Information Provided In Connection With Outstanding Debt Of Subsidiaries [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums written |  |  |  |  |  |  |  |  | $ 32,275 | $ 30,579 | $ 29,244
Net premiums earned | $ 7,935 | $ 8,327 | $ 7,891 | $ 7,137 | $ 7,465 | $ 7,908 | $ 7,664 | $ 7,027 | 31,290 | 30,064 | 29,034
Net Investment Income | 858 | 873 | 859 | 836 | 848 | 823 | 828 | 806 | 3,426 | 3,305 | 3,125
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net Realized Gains Losses | (55) | (155) | (223) | (97) | (687) | 19 | 18 | (2) | (530) | (652) | 84
Losses and loss expenses | 4,865 | 5,052 | 4,715 | 4,098 | 4,610 | 4,868 | 4,487 | 4,102 | 18,730 | 18,067 | 18,454
Policy benefits | 225 | 158 | 161 | 196 | 162 | 127 | 150 | 151 | 740 | 590 | 676
Policy acquisition costs and administrative expenses |  |  |  |  |  |  |  |  | 9,183 | 8,798 | 8,614
Interest (income) expense |  |  |  |  |  |  |  |  | 552 | 641 | 607
Other (Income) Expense |  |  |  |  |  |  |  |  | (596) | (434) | (400)
Amortization of Purchased Intangibles |  |  |  |  |  |  |  |  | 305 | 339 | 260
Chubb integration expenses |  |  |  |  |  |  |  |  | 23 | 59 | 310
Income tax expense (benefit) |  |  |  |  |  |  |  |  | 795 | 695 | (139)
Net income | $ 1,173 | $ 1,091 | $ 1,150 | $ 1,040 | $ 355 | $ 1,231 | $ 1,294 | $ 1,082 | 4,454 | 3,962 | 3,861
Comprehensive income |  |  |  |  |  |  |  |  | 7,521 | 1,242 | 4,718
Chubb limited (Parent Guarantor) |  |  |  |  |  |  |  |  |  |  |
Information Provided In Connection With Outstanding Debt Of Subsidiaries [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums written |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net premiums earned |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net Investment Income |  |  |  |  |  |  |  |  | 1 | 6 | 4
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | 4,307 | 3,753 | 3,640
Net Realized Gains Losses |  |  |  |  |  |  |  |  | (17) | 0 | 0
Losses and loss expenses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Policy benefits |  |  |  |  |  |  |  |  | 0 | 0 | 0
Policy acquisition costs and administrative expenses |  |  |  |  |  |  |  |  | 92 | 87 | 75
Interest (income) expense |  |  |  |  |  |  |  |  | (243) | (299) | (332)
Other (Income) Expense |  |  |  |  |  |  |  |  | (27) | (24) | (12)
Amortization of Purchased Intangibles |  |  |  |  |  |  |  |  | 0 | 0 | 0
Chubb integration expenses |  |  |  |  |  |  |  |  | 1 | 14 | 32
Income tax expense (benefit) |  |  |  |  |  |  |  |  | 14 | 19 | 20
Net income |  |  |  |  |  |  |  |  | 4,454 | 3,962 | 3,861
Comprehensive income |  |  |  |  |  |  |  |  | 7,521 | 1,242 | 4,718
Chubb INA Holdings Inc. (Subsidiary Issuer) |  |  |  |  |  |  |  |  |  |  |
Information Provided In Connection With Outstanding Debt Of Subsidiaries [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums written |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net premiums earned |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net Investment Income |  |  |  |  |  |  |  |  | (15) | 13 | 14
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | 3,022 | 2,578 | 2,424
Net Realized Gains Losses |  |  |  |  |  |  |  |  | (31) | 117 | (25)
Losses and loss expenses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Policy benefits |  |  |  |  |  |  |  |  | 0 | 0 | 0
Policy acquisition costs and administrative expenses |  |  |  |  |  |  |  |  | (26) | (58) | 40
Interest (income) expense |  |  |  |  |  |  |  |  | 705 | 806 | 847
Other (Income) Expense |  |  |  |  |  |  |  |  | 6 | 26 | 93
Amortization of Purchased Intangibles |  |  |  |  |  |  |  |  | 0 | 0 | 0
Chubb integration expenses |  |  |  |  |  |  |  |  | 2 | 1 | 69
Income tax expense (benefit) |  |  |  |  |  |  |  |  | (175) | (148) | (742)
Net income |  |  |  |  |  |  |  |  | 2,464 | 2,081 | 2,106
Comprehensive income |  |  |  |  |  |  |  |  | 4,988 | (27) | 3,075
Other Chubb Limited Subsidiaries and Eliminations |  |  |  |  |  |  |  |  |  |  |
Information Provided In Connection With Outstanding Debt Of Subsidiaries [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums written |  |  |  |  |  |  |  |  | 32,275 | 30,579 | 29,244
Net premiums earned |  |  |  |  |  |  |  |  | 31,290 | 30,064 | 29,034
Net Investment Income |  |  |  |  |  |  |  |  | 3,440 | 3,286 | 3,107
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net Realized Gains Losses |  |  |  |  |  |  |  |  | (482) | (769) | 109
Losses and loss expenses |  |  |  |  |  |  |  |  | 18,730 | 18,067 | 18,454
Policy benefits |  |  |  |  |  |  |  |  | 740 | 590 | 676
Policy acquisition costs and administrative expenses |  |  |  |  |  |  |  |  | 9,117 | 8,769 | 8,499
Interest (income) expense |  |  |  |  |  |  |  |  | 90 | 134 | 92
Other (Income) Expense |  |  |  |  |  |  |  |  | (575) | (436) | (481)
Amortization of Purchased Intangibles |  |  |  |  |  |  |  |  | 305 | 339 | 260
Chubb integration expenses |  |  |  |  |  |  |  |  | 20 | 44 | 209
Income tax expense (benefit) |  |  |  |  |  |  |  |  | 956 | 824 | 583
Net income |  |  |  |  |  |  |  |  | 4,865 | 4,250 | 3,958
Comprehensive income |  |  |  |  |  |  |  |  | 7,922 | 1,808 | 4,430
Consolidating Adjustments |  |  |  |  |  |  |  |  |  |  |
Information Provided In Connection With Outstanding Debt Of Subsidiaries [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums written |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net premiums earned |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net Investment Income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | (7,329) | (6,331) | (6,064)
Net Realized Gains Losses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Losses and loss expenses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Policy benefits |  |  |  |  |  |  |  |  | 0 | 0 | 0
Policy acquisition costs and administrative expenses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Interest (income) expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other (Income) Expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Amortization of Purchased Intangibles |  |  |  |  |  |  |  |  |  | 0 | 0
Chubb integration expenses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income tax expense (benefit) |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net income |  |  |  |  |  |  |  |  | (7,329) | (6,331) | (6,064)
Comprehensive income |  |  |  |  |  |  |  |  | $ (12,910) | $ (1,781) | $ (7,505)

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