Quarterly report [Sections 13 or 15(d)]

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

v3.25.2
Restructuring Activities - Schedule of Costs Related to the Organizational Design Transformation Program (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Restructuring Cost and Reserve [Line Items]        
Total cost of transformation program $ 0.0 $ 3.5 $ 0.0 $ 9.4
Cumulative cost incurred 92.5   92.5  
Professional Fees [Member]        
Restructuring Cost and Reserve [Line Items]        
Total cost of transformation program 0.0 0.6 0.0 1.5
Cumulative cost incurred 26.5   26.5  
Retention and Separation [Member]        
Restructuring Cost and Reserve [Line Items]        
Total cost of transformation program 0.0 2.9 0.0 7.8
Cumulative cost incurred 64.4   64.4  
Other [Member]        
Restructuring Cost and Reserve [Line Items]        
Total cost of transformation program 0.0 $ 0.0 0.0 $ 0.1
Cumulative cost incurred $ 1.6   $ 1.6