v3.26.3
OTHER COMPREHENSIVE INCOME/(LOSS) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance $ 13,106.9 $ 14,427.3 $ 12,929.5 $ 15,124.1
Currency translation differences on investments in foreign subsidiaries 4.2 (72.4) (87.4) 297.5
Other comprehensive income, net adjustments 1.1 0.9 4.1 2.9
Ending balance 13,331.5 14,641.8 13,331.5 14,641.8
Total        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (811.5) (664.2) (722.9) (1,036.1)
Ending balance (806.2) (735.7) (806.2) (735.7)
Foreign Currency Translation        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (684.8) (534.5) (593.2) (904.4)
Currency translation differences on investments in foreign subsidiaries 4.2 (72.4) (87.4) 297.5
Ending balance (680.6) (606.9) (680.6) (606.9)
Employee Benefit Plans        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (126.7) (129.7) (129.7) (131.7)
Currency translation differences on investments in foreign subsidiaries 0.0      
Other comprehensive income, net adjustments 1.1 0.9 4.1 2.9
Ending balance $ (125.6) $ (128.8) $ (125.6) $ (128.8)