v3.24.2.u1
Restructuring Costs, Net - Summary of Company's Net Pretax Restructuring Charges (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]        
Restructuring costs, net $ 0.9 $ 36.6 $ 31.5 $ 25.5
CCS [Member]        
Restructuring Cost and Reserve [Line Items]        
Restructuring costs, net 0.4 13.2 0.8 (1.9)
OWN [Member]        
Restructuring Cost and Reserve [Line Items]        
Restructuring costs, net 0.2 3.8 0.2 3.9
NICS [Member]        
Restructuring Cost and Reserve [Line Items]        
Restructuring costs, net 1.4 9.0 2.6 11.0
ANS [Member]        
Restructuring Cost and Reserve [Line Items]        
Restructuring costs, net (1.1) 9.3 27.9 10.7
Corporate and Other [Member]        
Restructuring Cost and Reserve [Line Items]        
Restructuring costs, net $ 0.0 $ 1.3 $ 0.0 $ 1.8