Debt - Revolving Credit Facility - Additional Information (Detail) - USD ($)	3 Months Ended
	Sep. 30, 2015	Aug. 04, 2015
Debt Instrument [Line Items]
Aggregate committed amount of credit facility	$ 1,950,000,000
Credit facility, amendment fees incurred	100,000
Term Loans [Member]
Debt Instrument [Line Items]
Aggregate committed amount of credit facility	250,000,000
Revolving credit facility [Member]
Debt Instrument [Line Items]
Aggregate committed amount of credit facility	1,300,000,000	$ 1,250,000,000
Accordion to credit facility	$ 400,000,000