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Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss Attributable to Controlling Interests (Detail)
$ in Millions
 9 Months Ended
Sep. 30, 2020
USD ($)
Accumulated Other Comprehensive Income Loss [Line Items]  
Balance as of December 31, 2019 $ (759.6)
Balance as of September 30, 2020 (870.4)
Pension Liability [Member]  
Accumulated Other Comprehensive Income Loss [Line Items]  
Balance as of December 31, 2019 (56.5)
Net change in period 1.6
Balance as of September 30, 2020 (54.9)
Foreign Currency Translation [Member]  
Accumulated Other Comprehensive Income Loss [Line Items]  
Balance as of December 31, 2019 (674.8)
Net change in period (28.7)
Balance as of September 30, 2020 (703.5)
Fair Value of Derivative Investments [Member]  
Accumulated Other Comprehensive Income Loss [Line Items]  
Balance as of December 31, 2019 (28.3)
Net change in period (83.7)
Balance as of September 30, 2020 (112.0)
Accumulated Other Comprehensive Loss [Member]  
Accumulated Other Comprehensive Income Loss [Line Items]  
Balance as of December 31, 2019 (759.6)
Net change in period (110.8)
Balance as of September 30, 2020 $ (870.4)