The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2022 and 2021 (in millions, except per share data): | | | | | | | | | | | | | | | Three Months Ended
September 30, | | Nine Months Ended
September 30, | | | 2022 | | 2021 | | 2022 | | 2021 | Basic earnings per share numerator: | | | | | | | | | | | | | Net income | | $ | 150.2 | | $ | 120.4 | | $ | 75.3 | | $ | 363.1 | Net income allocated to participating securities | | | (0.6) | | | (0.4) | | | (0.6) | | | (1.1) | Net income allocated to common stockholders | | $ | 149.6 | | $ | 120.0 | | $ | 74.7 | | $ | 362.0 | Basic earnings per share denominator: | | | | | | | | | | | | | Weighted average shares outstanding | | | 106.2 | | | 106.8 | | | 106.4 | | | 107.0 | Basic earnings per share | | $ | 1.41 | | $ | 1.12 | | $ | 0.70 | | $ | 3.38 | | | | | | | | | | | | | | Diluted earnings per share numerator: | | | | | | | | | | | | | Net income | | $ | 150.2 | | $ | 120.4 | | $ | 75.3 | | $ | 363.1 | Net income allocated to participating securities | | | (0.6) | | | (0.4) | | | (0.6) | | | (1.1) | Net income allocated to common stockholders | | $ | 149.6 | | $ | 120.0 | | $ | 74.7 | | $ | 362.0 | Diluted earnings per share denominator: | | | | | | | | | | | | | Weighted average shares outstanding | | | 106.2 | | | 106.8 | | | 106.4 | | | 107.0 | Dilutive potential common shares outstanding | | | 0.2 | | | 0.2 | | | 0.2 | | | 0.2 | Total dilutive weighted average shares | | | 106.4 | | | 107.0 | | | 106.6 | | | 107.2 | Diluted earnings per share | | $ | 1.41 | | $ | 1.12 | | $ | 0.70 | | $ | 3.38 |
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