Fair Value Measurement of Assets and Liabilities - Schedule of Fair Value Liabilities Measured on Recurring Basis (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Acquisition Integration Divestiture And Related Expenses
Fair Value Measurements at Reporting Date Using: Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Beginning balance December 31, 2023	$ 141.7
New contingent consideration related to acquisitions	26.5
Change in estimates	2.4
Settlements	(28.9)
Foreign currency impact	1.0
Ending balance September 30, 2024	$ 142.7