Derivatives and Financial Instruments - Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024	Dec. 02, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contract liabilities	$ (34.2)	$ (16.3)
Contingent earn-out liabilities			$ (8.0)
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contract assets		2.5
Foreign currency contract liabilities	(34.2)	(16.3)
Deferred compensation plan	25.7	29.4
Contingent earn-out liabilities	(8.0)	(8.0)
Total recurring fair value measurements	(16.1)	9.5
Fair Value, Measurements, Recurring | Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate contract assets	0.4	1.9
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	12.0	15.0
Contingent earn-out liabilities	0.0	0.0
Total recurring fair value measurements	12.0	15.0
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	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		2.5
Foreign currency contract liabilities	(34.2)	(16.3)
Deferred compensation plan	0.0	0.0
Contingent earn-out liabilities	0.0	0.0
Total recurring fair value measurements	(33.8)	(11.9)
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	0.4	1.9
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
Contingent earn-out liabilities	(8.0)	(8.0)
Total recurring fair value measurements	(8.0)	(8.0)
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	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	13.7	14.4
Contingent earn-out liabilities	0.0	0.0
Total recurring fair value measurements	13.7	14.4
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	$ 0.0