Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income ("AOCI") by Component, Net of Tax (Detail) $ in Thousands	3 Months Ended
	Sep. 30, 2020 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 2,076,803
Other comprehensive income before reclassifications	35,524
Amounts reclassified from AOCI	(555)
Net current-period other comprehensive income	34,969
Ending Balance	3,046,677
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(31,596)
Other comprehensive income before reclassifications	35,524
Amounts reclassified from AOCI	0
Net current-period other comprehensive income	35,524
Ending Balance	3,928
Interest Rate Swap
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(44,085)
Other comprehensive income before reclassifications	0
Amounts reclassified from AOCI	(555)
Net current-period other comprehensive income	(555)
Ending Balance	(44,640)
Defined Benefit Pension Plan
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(11,702)
Other comprehensive income before reclassifications	0
Amounts reclassified from AOCI	0
Net current-period other comprehensive income	0
Ending Balance	(11,702)
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(87,383)
Ending Balance	$ (52,414)