Leases - Supplemental Lease Disclosures (Details) $ in Thousands	9 Months Ended
	Jan. 25, 2020 USD ($)
Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities, operating	$ 57,851
Cash paid for amounts included in the measurement of lease liabilities, financing	138
Lease liabilities arising from new ROU assets, operating	$ 52,954
Lease term and discount rate
Operating lease, Weighted-average remaining lease term (years)	6 years 8 months 12 days
Finance lease, Weighted-average remaining lease term (years)	15 days
Operating Lease, Weighted-average discount rate	3.80%
Finance lease, Weighted-average discount rate	3.90%