v3.26.3
Summary of Significant Accounting Policies - Schedule of Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Jun. 30, 2026
Dec. 31, 2025
Sep. 30, 2025
Jun. 30, 2025
Dec. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Total $ 6,596.6 $ 7,212.8 $ 7,057.1 $ 6,845.1 $ 6,717.6 $ 6,347.6
Accumulated Other Comprehensive Loss            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Total (194.2) $ (192.6) (170.2) $ (196.5) $ (189.5) $ (329.8)
Currency translation adjustments            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Total (194.9)   (172.7)      
Unrealized gains on defined benefit plans            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Total $ 0.7   $ 2.5