Quarterly report [Sections 13 or 15(d)]

Restructuring Activities - Additional Information (Detail)

v3.25.1
Restructuring Activities - Additional Information (Detail) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Apr. 30, 2025
Mar. 31, 2025
Mar. 31, 2024
Restructuring Cost and Reserve [Line Items]      
Restructuring costs   $ 3.3 $ 16.7
Total cost of transformation program   0.0 5.9
Expenses recognized under technology realignment program   0.0  
Restructuring Program [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring costs   3.3 16.7
Subsequent Event [Member] | Technology Realignment Program [Member]      
Restructuring Cost and Reserve [Line Items]      
Expected Pre-tax charges $ 5.0    
Minimum [Member]      
Restructuring Cost and Reserve [Line Items]      
Expected Pre-tax charges   92.5  
Minimum [Member] | Restructuring Program [Member]      
Restructuring Cost and Reserve [Line Items]      
Expected Pre-tax charges   $ 72.4 $ 74.0