Fair Value Measurement of Assets and Liabilities - Schedule of Fair Value Measurement of Asset and Liabilities (Detail) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Derivatives Not Designated as Hedges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, current and long-term		$ 1.6
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current	Other Liabilities, Current
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		$ 0.4
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets, Current	Assets, Current
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	$ 46.5	$ 60.2
Contingent consideration related to acquisitions	142.7	141.7
Total Liabilities	335.1	359.8
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	46.5	60.2
Total Liabilities	192.4	218.1
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 consideration related to acquisitions	142.7	141.7
Total Liabilities	142.7	141.7
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	$ 18.2	$ 5.4
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets, Current, Other Assets, Noncurrent	Assets, Current, Other Assets, Noncurrent
Derivatives, current and long-term	$ 66.2	$ 68.1
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current, Other Liabilities, Noncurrent	Other Liabilities, Current, Other Liabilities, Noncurrent
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	$ 18.2	$ 5.4
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets, Current, Other Assets, Noncurrent	Assets, Current, Other Assets, Noncurrent
Derivatives, current and long-term	$ 66.2	$ 68.1
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current, Other Liabilities, Noncurrent	Other Liabilities, Current, Other Liabilities, Noncurrent
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	$ 121.8	$ 144.7
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current, Other Liabilities, Noncurrent	Other Liabilities, Current, Other Liabilities, Noncurrent
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	$ 121.8	$ 144.7
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current, Other Liabilities, Noncurrent	Other Liabilities, Current, Other Liabilities, Noncurrent
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	$ 28.3	$ 54.4
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets, Current, Other Assets, Noncurrent	Assets, Current, Other Assets, Noncurrent
Derivatives, current and long-term	$ 4.4	$ 3.7
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current, Other Liabilities, Noncurrent	Other Liabilities, Current, Other Liabilities, Noncurrent
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		$ 0.4
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Assets, Current, Other Assets, Noncurrent
Derivatives, current and long-term		$ 1.6
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Other Liabilities, Current, Other Liabilities, Noncurrent
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	$ 28.3	$ 54.4
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets, Current, Other Assets, Noncurrent	Assets, Current, Other Assets, Noncurrent
Derivatives, current and long-term	$ 4.4	$ 3.7
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current, Other Liabilities, Noncurrent	Other Liabilities, Current, Other Liabilities, Noncurrent
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		$ 0.4
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Assets, Current, Other Assets, Noncurrent
Derivatives, current and long-term		$ 1.6
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Other Liabilities, Current, Other Liabilities, Noncurrent