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Earnings per share | 3 Months Ended
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Mar. 31, 2019
Earnings Per Share [Abstract] |
Earnings per share | Earnings per share
| Three Months Ended |
| March 31 |
(in millions of U.S. dollars, except share and per share data) | 2019 |  |  | 2018 |
Numerator: |  |  |
Net income | $ | 1,040 |  |  | $ | 1,082 |
Denominator: |  |  |
Denominator for basic earnings per share: |  |  |
Weighted-average shares outstanding | 458,805,185 |  |  | 465,703,240 |
Denominator for diluted earnings per share: |  |  |
Share-based compensation plans | 2,731,755 |  |  | 3,770,351 |
Weighted-average shares outstanding and assumed conversions | 461,536,940 |  |  | 469,473,591 |
Basic earnings per share | $ | 2.27 |  |  | $ | 2.32 |
Diluted earnings per share | $ | 2.25 |  |  | $ | 2.30 |
Potential anti-dilutive share conversions | 4,343,204 |  |  | 2,116,188 |
Excluded from weighted-average shares outstanding and assumed conversions is the impact of securities that would have been anti-dilutive during the respective periods.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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