Quarterly report [Sections 13 or 15(d)]

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

v3.26.1
Restructuring Activities - Schedule of Changes in the Liabilities Related to the Technology Realignment Program (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Restructuring Cost and Reserve [Line Items]    
Beginning Balance $ 3.9  
Expenses 2.4 $ 0.0
Cash payments (3.8)  
Non-cash items and other 0.0  
Ending balance 2.5  
Professional Fees [Member]    
Restructuring Cost and Reserve [Line Items]    
Beginning Balance 0.0  
Expenses 0.0 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 3.9  
Expenses 2.4 0.0
Cash payments (3.8)  
Non-cash items and other 0.0  
Ending balance 2.5  
Other [Member]    
Restructuring Cost and Reserve [Line Items]    
Beginning Balance 0.0  
Expenses 0.0 $ 0.0
Cash payments 0.0  
Non-cash items and other 0.0  
Ending balance $ 0.0