Leases Leases (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2020	Oct. 26, 2019	Oct. 31, 2020	Oct. 26, 2019
Leases [Abstract]
Operating Lease, Weighted Average Remaining Lease Term	5 years 6 months		5 years 6 months
Variable Lease, Cost	$ 34,335	$ 24,140	$ 41,742	$ 31,010
Lease, Cost	59,778	74,566	69,574	99,960
Operating Lease, Expense	94,113	$ 98,706	111,316	$ 130,970
Lessee, Operating Lease, Liability, Payments, Due Year Two	53,953		53,953
Lessee, Operating Lease, Liability, Payments, Due Year Three	45,690		45,690
Lessee, Operating Lease, Liability, Payments, Due Year Four	37,977		37,977
Lessee, Operating Lease, Liability, Payments, Due Year Five	31,539		31,539
Lessee, Operating Lease, Liability, Payments, Due after Year Five	88,826		88,826
Lessee, Operating Lease, Liability, Payments, Due	368,653		368,653
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	48,145		48,145
Operating Lease, Liability	$ 320,508		$ 320,508
Operating Lease, Weighted Average Discount Rate, Percent	4.50%		4.50%
Operating Lease, Payments			$ 53,667
ROU Asst Obtained in Exchange for Lease Liabilites			110,834
Lessee, Operating Lease, Liability, to be Paid, Year One	$ 110,668		$ 110,668