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Employee Benefits (Tables)
 3 Months Ended
Mar. 31, 2025
Retirement Benefits [Abstract]  
Summary of Workers' Compensation Known Claims and IBNR Reserves
Workers’ compensation known claims and IBNR reserves included on the Condensed Consolidated Balance Sheets were as follows (in millions):
March 31, 2025December 31, 2024
Included in other current liabilities$8.3 $9.2 
Included in other long-term liabilities20.5 18.5 
$28.8 $27.7 
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):
 March 31, 2025December 31, 2024
Included in other non-current assets$4.3 $4.4 
Summary of Equity-based Awards for Employees
Amounts and changes for each category of equity-based award were as follows:
 Common Stock AwardsPerformance-Based Stock AwardsPerformance-Based Restricted Stock Units
 AwardsWeighted Average Grant Date Fair Value Per ShareAwardsWeighted Average Grant Date Fair Value Per ShareUnitsWeighted Average Grant Date Fair Value Per Share
Nonvested awards/units at December 31, 2024
105,957 $156.41 131,134 $133.04 7,861 $242.85 
Granted18,511 170.99 46,556 170.99 — — 
Vested(858)151.11 — — (27)242.85 
Forfeited/Cancelled(212)171.91 — — (154)242.85 
Nonvested awards/units at March 31, 2025123,398 $158.61 177,690 $142.98 7,680 $242.85 
Summary of Stock Compensation Expenses
The following table summarizes the share-based compensation expense recognized by award type (in millions):
 Three months ended March 31,
 20252024
Common Stock Awards$3.0 $1.2 
Non-Employee Common Stock Awards0.2 0.2 
Performance-Based Stock Awards1.9 1.9 
Liability Performance-Based Stock Awards0.3 0.4 
Performance-Based Restricted Stock Units0.5 0.4 
$5.9 $4.1 
We recorded the following stock compensation expense by income statement category (in millions):
 Three months ended March 31,
 20252024
Cost of sales$0.3 $0.3 
Selling0.1 0.1 
Administrative5.5 3.7 
$5.9 $4.1 
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 March 31, 2025
 Unrecognized
Compensation Expense
on Unvested Awards		Weighted Average
Remaining
Vesting Period
Common Stock Awards$8.1 1.6 years
Performance-Based Stock Awards12.9 2.1 years
Performance-Based Restricted Stock Units0.1 0.1 years
Total unrecognized compensation expense related to unvested awards$21.1