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Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss Attributable to Controlling Interests (Detail)
$ in Millions
 3 Months Ended
Mar. 31, 2025
USD ($)
Accumulated Other Comprehensive Income Loss [Line Items]  
Beginning balance $ 20,179.6
Ending balance 22,353.7
Pension Liability [Member]  
Accumulated Other Comprehensive Income Loss [Line Items]  
Beginning balance (23.2)
Net change in period (0.1)
Ending balance (23.3)
Foreign Currency Translation [Member]  
Accumulated Other Comprehensive Income Loss [Line Items]  
Beginning balance (1,232.8)
Net change in period 217.3
Ending balance (1,015.5)
Fair Value of Derivative Investments [Member]  
Accumulated Other Comprehensive Income Loss [Line Items]  
Beginning balance 104.9
Net change in period (0.1)
Ending balance 104.8
Accumulated Other Comprehensive Loss [Member]  
Accumulated Other Comprehensive Income Loss [Line Items]  
Beginning balance (1,151.1)
Net change in period 217.1
Ending balance $ (934.0)