Quarterly report pursuant to Section 13 or 15(d)

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

v3.24.2
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, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Restructuring Cost and Reserve [Line Items]        
Beginning Balance     $ 9.2  
Expenses $ 3.5 $ 10.1 9.4 $ 37.4
Cash payments     (10.2)  
Non-cash items and other     0.0  
Ending Balance 8.4   8.4  
Professional Fees [Member]        
Restructuring Cost and Reserve [Line Items]        
Beginning Balance     1.0  
Expenses 0.6 2.0 1.5 4.1
Cash payments     (2.2)  
Non-cash items and other     0.0  
Ending Balance 0.3   0.3  
Retention and Separation [Member]        
Restructuring Cost and Reserve [Line Items]        
Beginning Balance     8.2  
Expenses 2.9 7.9 7.8 33.1
Cash payments     (7.9)  
Non-cash items and other     0.0  
Ending Balance 8.1   8.1  
Other [Member]        
Restructuring Cost and Reserve [Line Items]        
Beginning Balance     0.0  
Expenses 0.0 $ 0.2 0.1 $ 0.2
Cash payments     (0.1)  
Non-cash items and other     0.0  
Ending Balance $ 0.0   $ 0.0