v3.25.1
Restructuring - Summary of Liabilities Recognized Related to Restructuring Plan (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Feb. 28, 2025
Dec. 31, 2023
Dec. 31, 2019
2025 Restructuring Plan [Member]        
Restructuring Cost And Reserve [Line Items]        
Expenses $ 23.3      
Cash payments (10.2)      
Ending Balance 13.1      
Expense incurred since the start of the Restructuring Plan 23.3      
Expense estimated to be recognized for the Restructuring Plan 85.0 $ 85.0    
2025 Restructuring Plan [Member] | Employee Termination Benefits [Member]        
Restructuring Cost And Reserve [Line Items]        
Expenses 23.2      
Cash payments (10.2)      
Ending Balance 13.0      
Expense incurred since the start of the Restructuring Plan 23.2      
Expense estimated to be recognized for the Restructuring Plan 75.0      
2025 Restructuring Plan [Member] | Contract Termination [Member]        
Restructuring Cost And Reserve [Line Items]        
Expense estimated to be recognized for the Restructuring Plan 2.0      
2025 Restructuring Plan [Member] | Other Restructuring [Member]        
Restructuring Cost And Reserve [Line Items]        
Expenses 0.1      
Ending Balance 0.1      
Expense incurred since the start of the Restructuring Plan 0.1      
Expense estimated to be recognized for the Restructuring Plan 8.0      
2023 Restructuring Plan [Member]        
Restructuring Cost And Reserve [Line Items]        
Beginning Balance 27.1      
Expenses 3.7      
Cash payments (16.3)      
Foreign currency exchange rate changes 0.7      
Ending Balance 15.2      
Expense incurred since the start of the Restructuring Plan 117.2      
Expense estimated to be recognized for the Restructuring Plan     $ 117.0  
2023 Restructuring Plan [Member] | Employee Termination Benefits [Member]        
Restructuring Cost And Reserve [Line Items]        
Beginning Balance 18.8      
Expenses (0.7)      
Cash payments (7.9)      
Foreign currency exchange rate changes 0.6      
Ending Balance 10.8      
Expense incurred since the start of the Restructuring Plan 93.1      
2023 Restructuring Plan [Member] | Contract Termination [Member]        
Restructuring Cost And Reserve [Line Items]        
Beginning Balance 1.4      
Expenses 2.5      
Cash payments (2.7)      
Ending Balance 1.2      
Expense incurred since the start of the Restructuring Plan 5.6      
2023 Restructuring Plan [Member] | Other Restructuring [Member]        
Restructuring Cost And Reserve [Line Items]        
Beginning Balance 6.9      
Expenses 1.9      
Cash payments (5.7)      
Foreign currency exchange rate changes 0.1      
Ending Balance 3.2      
Expense incurred since the start of the Restructuring Plan 18.5      
2019 Restructuring Plan [Member]        
Restructuring Cost And Reserve [Line Items]        
Beginning Balance 43.1      
Expenses 8.9      
Cash payments (5.6)      
Foreign currency exchange rate changes 1.2      
Ending Balance 47.6      
Expense incurred since the start of the Restructuring Plan 376.4      
Expense estimated to be recognized for the Restructuring Plan 400.0     $ 400.0
2019 Restructuring Plan [Member] | Employee Termination Benefits [Member]        
Restructuring Cost And Reserve [Line Items]        
Beginning Balance 38.0      
Expenses 4.1      
Cash payments (0.1)      
Foreign currency exchange rate changes 1.2      
Ending Balance 43.2      
Expense incurred since the start of the Restructuring Plan 156.2      
Expense estimated to be recognized for the Restructuring Plan 160.0      
2019 Restructuring Plan [Member] | Contract Termination [Member]        
Restructuring Cost And Reserve [Line Items]        
Beginning Balance 3.8      
Cash payments (0.5)      
Ending Balance 3.3      
Expense incurred since the start of the Restructuring Plan 35.0      
Expense estimated to be recognized for the Restructuring Plan 35.0      
2019 Restructuring Plan [Member] | Other Restructuring [Member]        
Restructuring Cost And Reserve [Line Items]        
Beginning Balance 1.3      
Expenses 4.8      
Cash payments (5.0)      
Ending Balance 1.1      
Expense incurred since the start of the Restructuring Plan 185.2      
Expense estimated to be recognized for the Restructuring Plan $ 205.0