Annual report [Section 13 and 15(d), not S-K Item 405]

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

v3.25.4
Restructuring Activities - Schedule of Costs Related to the Organizational Design Transformation Program (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]      
Total cost of transformation program $ 0.0 $ 13.3 $ 54.2
Cumulative cost incurred   92.5  
Professional Fees [Member]      
Restructuring Cost and Reserve [Line Items]      
Total cost of transformation program 0.0 1.6 8.0
Cumulative cost incurred   26.5  
Retention and Separation [Member]      
Restructuring Cost and Reserve [Line Items]      
Total cost of transformation program 0.0 10.9 45.7
Cumulative cost incurred   64.4  
Other [Member]      
Restructuring Cost and Reserve [Line Items]      
Total cost of transformation program $ 0.0 0.8 $ 0.5
Cumulative cost incurred   $ 1.6