Quarterly report [Sections 13 or 15(d)]

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

v3.26.1
Restructuring Activities - Schedule of Costs Related to the Restructuring Program (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Restructuring Cost and Reserve [Line Items]          
Restructuring Costs, Total $ 0.0 $ 0.7 $ 0.0 $ 4.0  
Restructuring Program [Member]          
Restructuring Cost and Reserve [Line Items]          
Cumulative cost incurred         $ 76.1
Professional Fees [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring Costs, Total 0.0 (0.5) 0.0 (0.5)  
Professional Fees [Member] | Restructuring Program [Member]          
Restructuring Cost and Reserve [Line Items]          
Cumulative cost incurred         4.1
Retention and Separation [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring Costs, Total 0.0 1.2 0.0 4.5  
Retention and Separation [Member] | Restructuring Program [Member]          
Restructuring Cost and Reserve [Line Items]          
Cumulative cost incurred         72.0
Others [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring Costs, Total $ 0.0 $ 0.0 $ 0.0 $ 0.0  
Others [Member] | Restructuring Program [Member]          
Restructuring Cost and Reserve [Line Items]          
Cumulative cost incurred         $ 0.0