v3.26.3
Restructuring Activities - Schedule of Changes in the Liabilities Related to the Optimization Program (Detail)
$ in Millions
 9 Months Ended
Sep. 30, 2026
USD ($)
Restructuring Cost and Reserve [Line Items]  
Beginning Balance $ 1.3
Expenses 0.0
Ending Balance 0.5
Optimization Program [Member]  
Restructuring Cost and Reserve [Line Items]  
Expenses 6.9
Cash payments (1.1)
Non-cash items and other 0.0
Ending Balance 5.8
Professional Fees [Member]  
Restructuring Cost and Reserve [Line Items]  
Beginning Balance 0.0
Expenses 0.0
Ending Balance 0.0
Professional Fees [Member] | Optimization Program [Member]  
Restructuring Cost and Reserve [Line Items]  
Expenses 0.0
Cash payments 0.0
Non-cash items and other 0.0
Ending Balance 0.0
Retention and Separation [Member]  
Restructuring Cost and Reserve [Line Items]  
Beginning Balance 1.3
Expenses 0.0
Ending Balance 0.5
Retention and Separation [Member] | Optimization Program [Member]  
Restructuring Cost and Reserve [Line Items]  
Expenses 6.8
Cash payments (1.0)
Non-cash items and other 0.0
Ending Balance 5.8
Other [Member]  
Restructuring Cost and Reserve [Line Items]  
Beginning Balance 0.0
Expenses 0.0
Ending Balance 0.0
Other [Member] | Optimization Program [Member]  
Restructuring Cost and Reserve [Line Items]  
Expenses 0.1
Cash payments (0.1)
Non-cash items and other 0.0
Ending Balance $ 0.0