v3.26.3
Goodwill and Intangible Assets (Changes in Carrying Amount of Goodwill) (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Goodwill [Roll Forward]    
Goodwill, net, beginning balance $ 6,754.7  
Foreign currency translation (134.7)  
Goodwill 6,620.0 $ 6,754.7
Developed Markets Segment    
Goodwill [Roll Forward]    
Goodwill, net, beginning balance 5,024.5  
Foreign currency translation (143.3)  
Goodwill 4,881.2 5,024.5
Accumulated impairment loss 3,190.0 3,190.0
Greater China    
Goodwill [Roll Forward]    
Goodwill, net, beginning balance 933.2  
Foreign currency translation 8.3  
Goodwill 941.5 933.2
Japan, Australia and New Zealand Segment    
Goodwill [Roll Forward]    
Goodwill, net, beginning balance 0.0  
Foreign currency translation 0.0  
Goodwill 0.0 0.0
Accumulated impairment loss 651.8 651.8
Emerging Markets Segment    
Goodwill [Roll Forward]    
Goodwill, net, beginning balance 797.0  
Foreign currency translation 0.3  
Goodwill 797.3 797.0
Accumulated impairment loss $ 499.0 $ 499.0