Quarterly report [Sections 13 or 15(d)]

Restructuring Activities - Schedule of Changes in the Liabilities Related to the Transformation Program (Detail)

v3.25.2
Restructuring Activities - Schedule of Changes in the Liabilities Related to the 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]        
Beginning Balance     $ 4.7  
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]     Selling, General and Administrative Expense  
Expenses $ 0.0 $ 3.5 $ 0.0 $ 9.4
Cash payments     (2.0)  
Non-cash items and other     0.0  
Ending Balance 2.7   2.7  
Professional Fees [Member]        
Restructuring Cost and Reserve [Line Items]        
Beginning Balance     0.0  
Expenses 0.0 0.6 0.0 1.5
Cash payments     0.0  
Non-cash items and other     0.0  
Ending Balance 0.0   0.0  
Retention and Separation [Member]        
Restructuring Cost and Reserve [Line Items]        
Beginning Balance     4.7  
Expenses 0.0 2.9 0.0 7.8
Cash payments     (2.0)  
Non-cash items and other     0.0  
Ending Balance 2.7   2.7  
Other [Member]        
Restructuring Cost and Reserve [Line Items]        
Beginning Balance     0.0  
Expenses 0.0 $ 0.0 0.0 $ 0.1
Cash payments     0.0  
Non-cash items and other     0.0  
Ending Balance $ 0.0   $ 0.0