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Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss Attributable to Controlling Interests (Detail)
$ in Millions
 6 Months Ended
Jun. 30, 2021
USD ($)
Accumulated Other Comprehensive Income Loss [Line Items]  
Balance as of December 31, 2020 $ (643.6)
Balance as of June 30, 2021 (530.5)
Pension Liability [Member]  
Accumulated Other Comprehensive Income Loss [Line Items]  
Balance as of December 31, 2020 (56.1)
Net change in period 1.1
Balance as of June 30, 2021 (55.0)
Foreign Currency Translation [Member]  
Accumulated Other Comprehensive Income Loss [Line Items]  
Balance as of December 31, 2020 (491.1)
Net change in period 88.4
Balance as of June 30, 2021 (402.7)
Fair Value of Derivative Investments [Member]  
Accumulated Other Comprehensive Income Loss [Line Items]  
Balance as of December 31, 2020 (96.4)
Net change in period 23.6
Balance as of June 30, 2021 (72.8)
Accumulated Other Comprehensive Loss [Member]  
Accumulated Other Comprehensive Income Loss [Line Items]  
Balance as of December 31, 2020 (643.6)
Net change in period 113.1
Balance as of June 30, 2021 $ (530.5)