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Income Taxes - Summary of Temporary Differences That Give Rise to Deferred Income Tax Assets and Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Deferred income tax assets:    
Inventory costing and valuation methods $ 5.9 $ 5.6
Insurance reserves 5.5 8.3
Foreign net operating loss and credit carryforwards 2.4 3.0
Stock-based compensation 3.7 3.8
Operating lease liabilities 72.2 69.5
Section 174 capitalization 11.1 7.4
Other, deferred tax assets 8.3 9.4
Total deferred income tax assets 109.1 107.0
Less: Valuation allowances (1.8) (2.2)
Total net deferred income tax assets 107.3 104.8
Deferred income tax liabilities:    
Property and equipment (90.9) (95.4)
Operating lease ROU assets (70.6) (68.3)
Prepaid expenses (4.6) (3.5)
Other, deferred tax liabilities (0.2) (0.4)
Total deferred income tax liabilities (166.3) (167.6)
Net deferred income tax liabilities $ (59.0) $ (62.8)