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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2024
Earnings Per Share [Abstract] |
Average Common Shares Outstanding Basic and Diluted | The average number of common shares outstanding is reconciled to those used in the basic and diluted EPS computations as follows:
|  | Three Months Ended September 30 |  | Nine Months Ended September 30
(Millions of shares) |  | 2024 |  | 2023 |  | 2024 |  | 2023
Basic |  | 335.7 |  |  | 338.1 |  |  | 336.6 |  |  | 337.9 |
Dilutive effect of stock options and restricted share unit awards |  | 1.5 |  |  | 0.8 |  |  | 1.3 |  |  | 0.9 |
Diluted |  | 337.2 |  |  | 338.9 |  |  | 337.9 |  |  | 338.8 |

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