Derivatives and Financial Instruments - Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contract liabilities	$ (60.7)	$ (70.0)
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contract assets		0.2
Foreign currency contract liabilities	(60.7)	(70.0)
Deferred compensation plan	29.2	26.1
Total recurring fair value measurements	(33.2)	(43.4)
Fair Value, Measurements, Recurring | Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate contract assets		0.3
Derivative Liability	(1.7)
Level 1 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contract assets		0.0
Foreign currency contract liabilities	0.0	0.0
Deferred compensation plan	14.9	12.1
Total recurring fair value measurements	14.9	12.1
Level 1 | Fair Value, Measurements, Recurring | Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate contract assets		0.0
Derivative Liability	0.0
Level 2 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contract assets		0.2
Foreign currency contract liabilities	(60.7)	(70.0)
Deferred compensation plan	0.0	0.0
Total recurring fair value measurements	(62.4)	(69.5)
Level 2 | Fair Value, Measurements, Recurring | Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate contract assets		0.3
Derivative Liability	(1.7)
Level 3 | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contract assets		0.0
Foreign currency contract liabilities	0.0	0.0
Deferred compensation plan	0.0	0.0
Total recurring fair value measurements	0.0	0.0
Level 3 | Fair Value, Measurements, Recurring | Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate contract assets		0.0
Derivative Liability	0.0
NAV | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contract assets		0.0
Foreign currency contract liabilities	0.0	0.0
Deferred compensation plan	14.3	14.0
Total recurring fair value measurements	14.3	14.0
NAV | Fair Value, Measurements, Recurring | Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate contract assets		$ 0.0
Derivative Liability	$ 0.0