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Earnings Per Common Share | 9 Months Ended
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Sep. 30, 2020
Earnings Per Common Share |
Earnings Per Common Share | 15. Earnings Per Common Share The computations of the basic and diluted per share amounts were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the three months ended | ​ | For the nine months ended
​ | ​ | September 30, | ​ | September 30,
​ |  | 2020 |  | 2019 |  | 2020 |  | 2019
​ | ​ | (in millions, except per share data)
Net income | ​ | $ | 235.9 | ​ | $ | 284.6 | ​ | $ | 937.0 | ​ | $ | 1,128.8
Subtract: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income (loss) attributable to noncontrolling interest | ​ | ​ | (0.1) | ​ | ​ | 7.5 | ​ | ​ | 13.8 | ​ | ​ | 35.5
Total | ​ | $ | 236.0 | ​ | $ | 277.1 | ​ | $ | 923.2 | ​ | $ | 1,093.3
Weighted-average shares outstanding: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic | ​ | ​ | 274.8 | ​ | ​ | 279.0 | ​ | ​ | 274.7 | ​ | ​ | 278.9
Dilutive effects: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Stock options | ​ | ​ | 0.4 | ​ | ​ | 0.9 | ​ | ​ | 0.3 | ​ | ​ | 0.9
Restricted stock units | ​ | ​ | 1.5 | ​ | ​ | 1.4 | ​ | ​ | 1.3 | ​ | ​ | 1.4
Performance share awards | ​ | ​ | 0.1 | ​ | ​ | 0.1 | ​ | ​ | 0.1 | ​ | ​ | 0.1
Diluted | ​ | ​ | 276.8 | ​ | ​ | 281.4 | ​ | ​ | 276.4 | ​ | ​ | 281.3
Net income per common share: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic | ​ | $ | 0.86 | ​ | $ | 0.99 | ​ | $ | 3.36 | ​ | $ | 3.92
Diluted | ​ | $ | 0.85 | ​ | $ | 0.98 | ​ | $ | 3.34 | ​ | $ | 3.89
​ The calculation of diluted earnings per share for the three and nine months ended September 30, 2020 and 2019, excludes the incremental effect related to certain outstanding stock-based compensation grants due to their anti-dilutive effect.

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