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Definite Lived Long-Lived Assets - Future Amortization Expense (Detail)
$ in Millions
Jun. 30, 2019
USD ($)
Finite lived intangible assets disclosure [Abstract]  
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months $ 86.8
Finite-Lived Intangible Assets, Amortization Expense, Year Two 86.7
Finite-Lived Intangible Assets, Amortization Expense, Year Three 85.9
Finite-Lived Intangible Assets, Amortization Expense, Year Four 85.6
Finite-Lived Intangible Assets, Amortization Expense, Year Five $ 85.3