Quarterly report [Sections 13 or 15(d)]

Restructuring Activities - Schedule of Costs Related to the Restructuring Program (Detail)

v3.25.1
Restructuring Activities - Schedule of Costs Related to the Restructuring Program (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Restructuring Cost and Reserve [Line Items]    
Restructuring Costs, Total $ 3.3 $ 16.7
Cumulative cost incurred 92.5  
Restructuring Program [Member]    
Restructuring Cost and Reserve [Line Items]    
Restructuring Costs, Total 3.3 16.7
Cumulative cost incurred 72.4  
Professional Fees [Member]    
Restructuring Cost and Reserve [Line Items]    
Restructuring Costs, Total 0.0 2.8
Cumulative cost incurred 26.5  
Professional Fees [Member] | Restructuring Program [Member]    
Restructuring Cost and Reserve [Line Items]    
Cumulative cost incurred 4.6  
Retention and Separation [Member]    
Restructuring Cost and Reserve [Line Items]    
Restructuring Costs, Total 3.3 13.9
Cumulative cost incurred 64.4  
Retention and Separation [Member] | Restructuring Program [Member]    
Restructuring Cost and Reserve [Line Items]    
Cumulative cost incurred 67.8  
Others [Member]    
Restructuring Cost and Reserve [Line Items]    
Restructuring Costs, Total 0.0 $ 0.0
Cumulative cost incurred 1.6  
Others [Member] | Restructuring Program [Member]    
Restructuring Cost and Reserve [Line Items]    
Cumulative cost incurred $ 0.0