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Stockholders' Equity - (Tables) | 6 Months Ended
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Jun. 30, 2022
Share-based Payment Arrangement [Abstract] |
Employee Equity-Based Compensation Expense |
| Quarter Ended June 30, |  | Six Months Ended June 30,
| 2022 | 2021 |  | 2022 | 2021
Total stock-based compensation expense (selling, general and administrative and other operating charges, net) | $ | 4.9 |  | $ | 0.7 |  |  | $ | 5.5 |  | $ | 3.1 |
Income tax benefit related to stock-based compensation | $ | 1.2 |  | $ | 0.2 |  |  | $ | 1.4 |  | $ | 0.8 |
Impact on cash flow due to taxes paid related to net share settlement of equity awards | $ | 1.0 |  | $ | 0.1 |  |  | $ | 2.5 |  | $ | 1.7 |

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