v3.26.1
Restructuring - Summary of Liabilities Recognized Related to Restructuring Plan (Detail) - 2025 Restructuring Plan [Member]
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2026
USD ($)
Restructuring Cost And Reserve [Line Items]    
Beginning Balance   $ 99.6
Expenses incurred $ 3.4 9.7
Cash payments   (58.7)
Foreign currency exchange rate changes   (1.1)
Ending Balance 49.5 49.5
Expense incurred since the start of the Restructuring Plan 146.5 146.5
Expense estimated to be recognized for the Restructuring Plan 155.0 155.0
Employee Termination Benefits [Member]    
Restructuring Cost And Reserve [Line Items]    
Beginning Balance   91.5
Expenses incurred 1.9 4.2
Cash payments   (50.7)
Foreign currency exchange rate changes   (1.0)
Ending Balance 44.0 44.0
Expense incurred since the start of the Restructuring Plan 125.5 125.5
Expense estimated to be recognized for the Restructuring Plan 130.0 130.0
Contract Termination [Member]    
Restructuring Cost And Reserve [Line Items]    
Beginning Balance   5.0
Expenses incurred   0.3
Cash payments   (2.4)
Ending Balance 2.9 2.9
Expense incurred since the start of the Restructuring Plan 7.6 7.6
Expense estimated to be recognized for the Restructuring Plan 10.0 10.0
Other Restructuring [Member]    
Restructuring Cost And Reserve [Line Items]    
Beginning Balance   3.1
Expenses incurred 1.5 5.2
Cash payments   (5.6)
Foreign currency exchange rate changes   (0.1)
Ending Balance 2.6 2.6
Expense incurred since the start of the Restructuring Plan 13.4 13.4
Expense estimated to be recognized for the Restructuring Plan $ 15.0 $ 15.0