v3.26.1
Derivative Instruments and Hedging Activities - Net Investment Hedge Gains (Losses) Recognized on Condensed Consolidated Statements of Comprehensive Income (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Recognized in AOCI $ 24.3 $ (188.6) $ 75.9 $ (286.9)
Euro Notes [Member]        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Recognized in AOCI 14.8 (158.8) 53.1 (234.5)
Swiss Notes [Member]        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Recognized in AOCI 3.6   13.6  
Cross-currency Interest Rate Swaps [Member]        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain (Loss) Recognized in AOCI $ 5.9 $ (29.8) $ 9.2 $ (52.4)