Income Taxes - Schedule of Temporary Differences That Give Rise to Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Deferred compensation	$ 13.6	$ 11.4
Allowance for doubtful accounts	6.2	6.8
Accrued vacation and other	13.1	10.8
Inventory valuation	19.4	17.4
Tax loss carryforwards	3.3	0.4
Unrealized (gain) loss on financial derivatives	(1.4)	(1.7)
Lease liability	161.2	131.5
Total deferred tax assets	215.4	176.6
Deferred tax liabilities:
Excess book over tax depreciation and amortization	(113.8)	(75.1)
Lease right-of-use asset	(138.6)	(119.5)
Total deferred tax liabilities	(252.4)	(194.6)
Deferred income tax liabilities	$ (37.0)	$ (18.0)