v3.25.2
Supplemental Financial Statement Information - Changes in Accumulated Other Comprehensive Loss, Net of Tax (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance     $ (3,456.1)  
Ending balance $ (2,440.6) $ (3,349.2) (2,440.6) $ (3,349.2)
Foreign Currency Translation [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (172.5) (237.6) (308.8) (232.4)
Other comprehensive income (loss) 89.5 (16.1) 127.9 (48.7)
Amounts reclassified from AOCL 3.1 0.0 101.0 27.4
Ending balance (79.9) (253.7) (79.9) (253.7)
Defined Benefit Plan Activity [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (15.5) (15.1) (15.5) (14.9)
Other comprehensive income (loss) 0.2 0.1 0.2 (0.1)
Ending balance (15.3) (15.0) (15.3) (15.0)
Hedging Instruments [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (21.6) (12.6) (20.2) (19.4)
Other comprehensive income (loss) 0.3 0.6 (1.1) 7.4
Ending balance (21.3) (12.0) (21.3) (12.0)
Accumulated Other Comprehensive Loss [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (209.6) (265.3) (344.5) (266.7)
Ending balance $ (116.5) $ (280.7) $ (116.5) $ (280.7)