Quarterly report pursuant to Section 13 or 15(d)

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

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Restructuring Activities - Schedule of Costs Related to the Restructuring Program (Detail)
$ in Millions
 3 Months Ended
Mar. 31, 2024
USD ($)
Restructuring Cost and Reserve [Line Items]  
Restructuring Costs, Total $ 16.7
Cumulative cost incurred 85.1
Restructuring Program [Member]  
Restructuring Cost and Reserve [Line Items]  
Cumulative cost incurred 16.7
Professional Fees [Member]  
Restructuring Cost and Reserve [Line Items]  
Restructuring Costs, Total 2.8
Cumulative cost incurred 25.8
Professional Fees [Member] | Restructuring Program [Member]  
Restructuring Cost and Reserve [Line Items]  
Cumulative cost incurred 2.8
Retention and Separation [Member]  
Restructuring Cost and Reserve [Line Items]  
Restructuring Costs, Total 13.9
Cumulative cost incurred 58.4
Retention and Separation [Member] | Restructuring Program [Member]  
Restructuring Cost and Reserve [Line Items]  
Cumulative cost incurred 13.9
Others [Member]  
Restructuring Cost and Reserve [Line Items]  
Restructuring Costs, Total 0.0
Cumulative cost incurred 0.9
Others [Member] | Restructuring Program [Member]  
Restructuring Cost and Reserve [Line Items]  
Cumulative cost incurred $ 0.0