Derivatives and Financial Instruments - Assets and Liabilities Measured at Fair Value (Detail) - Recurring - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan assets	$ 18.8	$ 15.4
Total recurring fair value measurements	(16.8)	13.8
Currency Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contract liabilities	(36.7)	(8.4)
Contract assets	0.8	6.8
Foreign Currency Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contract liabilities	(0.3)	(0.3)
Contract assets	0.6	0.3
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan assets	12.1	10.2
Total recurring fair value measurements	12.1	10.2
Level 1 | Currency Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contract liabilities	0.0	0.0
Contract assets	0.0	0.0
Level 1 | Foreign Currency Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contract liabilities	0.0	0.0
Contract assets	0.0	0.0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan assets	0.0	0.0
Total recurring fair value measurements	(35.6)	(1.6)
Level 2 | Currency Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contract liabilities	(36.7)	(8.4)
Contract assets	0.8	6.8
Level 2 | Foreign Currency Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contract liabilities	(0.3)	(0.3)
Contract assets	0.6	0.3
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan assets	0.0	0.0
Total recurring fair value measurements	0.0	0.0
Level 3 | Currency Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contract liabilities	0.0	0.0
Contract assets	0.0	0.0
Level 3 | Foreign Currency Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contract liabilities	0.0	0.0
Contract assets	0.0	0.0
NAV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan assets	6.7	5.2
Total recurring fair value measurements	6.7	5.2
NAV | Currency Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contract liabilities	0.0	0.0
Contract assets	0.0	0.0
NAV | Foreign Currency Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contract liabilities	0.0	0.0
Contract assets	$ 0.0	$ 0.0