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Earnings per share | 6 Months Ended
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Jun. 30, 2023
Earnings Per Share [Abstract] |
Earnings per share | Earnings per share
| Three Months Ended |  | Six Months Ended
| June 30 |  | June 30
| 2023 |  | 2022 |  | 2023 |  | 2022
(in millions of U.S. dollars, except share and per share data) |  |  | As Adjusted |  |  |  | As Adjusted
Numerator: |  |  |  |  |  |  |
Net income | $ | 1,793 |  |  | $ | 1,190 |  |  | $ | 3,685 |  |  | $ | 3,143 |
Denominator: |  |  |  |  |  |  |
Denominator for basic earnings per share: |  |  |  |  |  |  |
Weighted-average shares outstanding | 412,487,400 |  |  | 421,624,660 |  |  | 413,383,304 |  |  | 423,703,328 |
Denominator for diluted earnings per share: |  |  |  |  |  |  |
Share-based compensation plans | 3,084,476 |  |  | 3,793,686 |  |  | 3,387,233 |  |  | 3,982,116 |
Weighted-average shares outstanding and assumed conversions | 415,571,876 |  |  | 425,418,346 |  |  | 416,770,537 |  |  | 427,685,444 |
Basic earnings per share | $ | 4.35 |  |  | $ | 2.82 |  |  | $ | 8.92 |  |  | $ | 7.42 |
Diluted earnings per share | $ | 4.32 |  |  | $ | 2.80 |  |  | $ | 8.84 |  |  | $ | 7.35 |
Potential anti-dilutive share conversions | 3,143,311 |  |  | 1,690,893 |  |  | 2,190,304 |  |  | 1,196,180 |
Excluded from weighted-average shares outstanding and assumed conversions is the impact of securities that would have been anti-dilutive during the respective periods. These securities consisted of stock options in which the underlying exercise prices were greater than the average market prices of our Common Shares. Refer to Note 12 to the Consolidated Financial Statements of our 2022 Form 10-K for additional information on stock options.

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