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Earnings per share (Tables) | 9 Months Ended
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Sep. 30, 2023
Earnings Per Share [Abstract] |
Schedule Of Earnings Per Share, Basic And Diluted |
| Three Months Ended |  | Nine Months Ended
| September 30 |  | September 30
| 2023 |  | 2022 |  | 2023 |  | 2022
(in millions of U.S. dollars, except share and per share data) |  |  | As Adjusted |  |  |  | As Adjusted
Numerator: |  |  |  |  |  |  |
Net income | $ | 2,040 |  |  | $ | 792 |  |  | $ | 5,725 |  |  | $ | 3,935 |
Net loss attributable to noncontrolling interests | (3) |  |  | — |  |  | (3) |  |  | — |
Net income attributable to Chubb | $ | 2,043 |  |  | $ | 792 |  |  | $ | 5,728 |  |  | $ | 3,935 |
Denominator: |  |  |  |  |  |  |
Denominator for basic earnings per share attributable to Chubb: |  |  |  |  |  |  |
Weighted-average shares outstanding | 409,505,454 |  |  | 416,542,101 |  |  | 412,076,470 |  |  | 421,290,032 |
Denominator for diluted earnings per share attributable to Chubb: |  |  |  |  |  |  |
Share-based compensation plans | 3,100,505 |  |  | 3,076,855 |  |  | 3,288,940 |  |  | 3,733,449 |
Weighted-average shares outstanding and assumed conversions | 412,605,959 |  |  | 419,618,956 |  |  | 415,365,410 |  |  | 425,023,481 |
Basic earnings per share attributable to Chubb | $ | 4.99 |  |  | $ | 1.90 |  |  | $ | 13.90 |  |  | $ | 9.34 |
Diluted earnings per share attributable to Chubb | $ | 4.95 |  |  | $ | 1.89 |  |  | $ | 13.79 |  |  | $ | 9.26 |
Potential anti-dilutive share conversions | 2,562,206 |  |  | 1,693,502 |  |  | 2,330,821 |  |  | 1,377,784 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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