Accumulated Other Comprehensive Loss ("AOCL") - Summary of Accumulated Other Comprehensive Loss (Detail) $ in Thousands	6 Months Ended
	Oct. 27, 2018 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 1,461,790
Ending Balance	1,451,964
Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(13,118)
Other comprehensive loss before reclassifications	0
Amounts reclassified from AOCL	1,101
Ending Balance	(12,017)
Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(61,856)
Other comprehensive loss before reclassifications	(12,860)
Amounts reclassified from AOCL	0
Ending Balance	(74,716)
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(74,974)
Other comprehensive loss before reclassifications	(12,860)
Amounts reclassified from AOCL	1,101
Ending Balance	$ (86,733)