Accumulated Other Comprehensive Loss ("AOCL") - Summary of Accumulated Other Comprehensive Loss (Detail) $ in Thousands	9 Months Ended
	Jan. 26, 2019 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 1,461,790
Ending Balance	1,469,144
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	1,649
Ending Balance	(11,469)
Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(61,856)
Other comprehensive loss before reclassifications	(9,676)
Amounts reclassified from AOCL	0
Ending Balance	(71,532)
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(74,974)
Other comprehensive loss before reclassifications	(9,676)
Amounts reclassified from AOCL	1,649
Ending Balance	$ (83,001)