Quarterly report pursuant to Section 13 or 15(d)

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

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Restructuring Activities - Schedule of Costs Related to the Organizational Design Transformation Program (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Restructuring Cost and Reserve [Line Items]    
Total cost of transformation program $ 5.9 $ 27.3
Cumulative cost incurred 85.1  
Professional Fees [Member]    
Restructuring Cost and Reserve [Line Items]    
Total cost of transformation program 0.9 2.1
Cumulative cost incurred 25.8  
Retention and Separation [Member]    
Restructuring Cost and Reserve [Line Items]    
Total cost of transformation program 4.9 25.2
Cumulative cost incurred 58.4  
Other [Member]    
Restructuring Cost and Reserve [Line Items]    
Total cost of transformation program 0.1 $ 0.0
Cumulative cost incurred $ 0.9