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Employee Benefits (Tables) | 12 Months Ended
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Dec. 31, 2024
Retirement Benefits [Abstract] |
Schedule of Workers' Compensation Known Claims and IBNR Reserves | Workers’ compensation known claims and IBNR reserves included on the Consolidated Balance Sheets were as follows (in millions):
| As of December 31,
| 2024 |  | 2023
Included in other current liabilities | $ | 9.2 |  |  | $ | 9.5 |
Included in other long-term liabilities | 18.5 |  |  | 17.0 |
| $ | 27.7 |  |  | $ | 26.5 |
Schedule of Insurance Receivable for Claims | This receivable offsets an equal liability included within the reserve amounts noted above and was as follows (in millions):
| As of December 31,
| 2024 |  | 2023
Included in other non-current assets | $ | 4.4 |  |  | $ | 3.0 |
Schedule of Contributions to Multiemployer Pensions and Health and Welfare Benefit Plans | Our contributions to multiemployer pension and health and welfare benefit plans were as follows (in millions):
| Years ended December 31,
| 2024 |  | 2023 |  | 2022
Pension plans | $ | 2.8 |  |  | $ | 3.6 |  |  | $ | 2.9 |
Health & welfare plans | 2.9 |  |  | 3.7 |  |  | 3.1 |
Total contributions | $ | 5.7 |  |  | $ | 7.3 |  |  | $ | 6.0 |
Schedule of Equity-Based Awards for Employees | Amounts and changes for each category of equity-based award were as follows:
| Common Stock Awards |  | Performance-Based Stock Awards |  | Performance-Based Restricted Stock Units
| Awards |  | Weighted Average Grant Date Fair Value Per Share |  | Awards |  | Weighted Average Grant Date Fair Value Per Share |  | Units |  | Weighted Average Grant Date Fair Value Per Share
Nonvested awards/units at December 31, 2023 | 116,482 |  |  | $ | 103.02 |  |  | 148,459 |  |  | $ | 108.83 |  |  | 14,382 |  |  | $ | 111.71 |
Granted | 45,166 |  |  | 230.55 |  |  | 35,320 |  |  | 205.96 |  |  | 8,228 |  |  | 242.85 |
Vested | (55,017) |  |  | 104.00 |  |  | (51,215) |  |  | 111.12 |  |  | (14,271) |  |  | 111.71 |
Forfeited/Cancelled | (674) |  |  | 175.93 |  |  | (1,430) |  |  | 205.96 |  |  | (478) |  |  | 212.37 |
Nonvested awards/units at December 31, 2024 | 105,957 |  |  | $ | 156.41 |  |  | 131,134 |  |  | $ | 133.04 |  |  | 7,861 |  |  | $ | 242.85 |
Schedule of Stock Compensation Expenses | The following table summarizes the share-based compensation expense recognized by award type (in millions):
| Years ended December 31,
| 2024 |  | 2023 |  | 2022
Common Stock Awards | $ | 6.8 |  |  | $ | 7.1 |  |  | $ | 6.2 |
Non-Employee Common Stock Awards | 0.8 |  |  | 0.7 |  |  | 0.5 |
Performance-Based Stock Awards | 6.9 |  |  | 6.3 |  |  | 5.4 |
Liability Performance-Based Stock Awards | 3.0 |  |  | 0.3 |  |  | 0.5 |
Performance-Based Restricted Stock Units | 1.9 |  |  | 1.5 |  |  | 1.2 |
| $ | 19.4 |  |  | $ | 15.9 |  |  | $ | 13.8 |
We recorded the following stock compensation expense, by income statement category (in millions):
| Years ended December 31,
| 2024 |  | 2023 |  | 2022
Cost of sales | $ | 1.1 |  |  | $ | 0.9 |  |  | $ | 0.6 |
Selling | 0.6 |  |  | 0.4 |  |  | 0.5 |
Administrative | 17.7 |  |  | 14.6 |  |  | 12.7 |
| $ | 19.4 |  |  | $ | 15.9 |  |  | $ | 13.8 |
Schedule of Unrecognized Share-Based Compensation Expense Related to Unvested Awards | Unrecognized share-based compensation expense related to unvested awards was as follows (in millions):
| As of December 31, 2024
| Unrecognized Compensation Expense on Unvested Awards |  | Weighted Average Remaining Vesting Period
Common Stock Awards | $ | 9.8 |  |  | 1.6 years
Performance-Based Stock Awards | 6.9 |  |  | 1.5 years
Performance-Based Restricted Stock Units | 0.5 |  |  | 0.3 years
Total unrecognized compensation expense related to unvested awards | $ | 17.2 |  |  |

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