Fair Value Measurement of Assets and Liabilities - Schedule of Fair Value Measurement of Asset and Liabilities (Detail) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Derivatives Not Designated as Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, current and long-term	$ 11.1	$ 0.8
Foreign Exchange Forward [Member] | Derivatives Not Designated as Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, current and long-term		1.8
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	32.0	141.6
Contingent payments related to acquisitions	166.7	180.7
Total Liabilities	346.3	356.1
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using: Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	32.0	141.6
Total Liabilities	179.6	175.4
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements at Reporting Date Using: Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent payments related to acquisitions	166.7	180.7
Total Liabilities	166.7	180.7
Fair Value, Measurements, Recurring [Member] | Cross-currency Interest Rate Swaps [Member] | Derivatives Designated as Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, current and long-term	19.6	50.3
Derivatives, current and long-term	27.9	14.2
Fair Value, Measurements, Recurring [Member] | Cross-currency Interest Rate Swaps [Member] | Fair Value Measurements at Reporting Date Using: Significant Other Observable Inputs (Level 2) [Member] | Derivatives Designated as Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, current and long-term	19.6	50.3
Derivatives, current and long-term	27.9	14.2
Fair Value, Measurements, Recurring [Member] | Interest Rate Swaps [Member] | Derivatives Designated as Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, current and long-term	121.1	158.6
Fair Value, Measurements, Recurring [Member] | Interest Rate Swaps [Member] | Fair Value Measurements at Reporting Date Using: Significant Other Observable Inputs (Level 2) [Member] | Derivatives Designated as Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, current and long-term	121.1	158.6
Fair Value, Measurements, Recurring [Member] | Foreign Exchange Forward [Member] | Derivatives Designated as Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, current and long-term	12.4	89.5
Derivatives, current and long-term	19.5	1.8
Fair Value, Measurements, Recurring [Member] | Foreign Exchange Forward [Member] | Derivatives Not Designated as Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, current and long-term		1.8
Derivatives, current and long-term	11.1	0.8
Fair Value, Measurements, Recurring [Member] | Foreign Exchange Forward [Member] | Fair Value Measurements at Reporting Date Using: Significant Other Observable Inputs (Level 2) [Member] | Derivatives Designated as Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, current and long-term	12.4	89.5
Derivatives, current and long-term	19.5	1.8
Fair Value, Measurements, Recurring [Member] | Foreign Exchange Forward [Member] | Fair Value Measurements at Reporting Date Using: Significant Other Observable Inputs (Level 2) [Member] | Derivatives Not Designated as Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, current and long-term		1.8
Derivatives, current and long-term	$ 11.1	$ 0.8