Accumulated Other Comprehensive Loss ("AOCL") - Summary of Accumulated Other Comprehensive Loss (Detail) $ in Thousands	6 Months Ended
	Oct. 28, 2017 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCL Beginning Balance	$ 1,394,433
AOCL Ending Balance	1,366,940
Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCL Beginning Balance	(14,989)
Other comprehensive loss before reclassifications	0
Amounts reclassified from AOCL	875
AOCL Ending Balance	(14,114)
Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCL Beginning Balance	(77,680)
Other comprehensive loss before reclassifications	8,119
Amounts reclassified from AOCL	0
AOCL Ending Balance	(69,561)
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCL Beginning Balance	(92,669)
Other comprehensive loss before reclassifications	8,119
Amounts reclassified from AOCL	875
AOCL Ending Balance	$ (83,675)