Customer Financing - Activity in DPP Receivables (Details) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2021	Jul. 25, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Cash collections on DPP receivable	$ (315,217)	$ (139,466)
Customer Finance Contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning DPP receivable balance	227,967	228,019
Non-cash additions to DPP receivable	19,110	16,511
Cash collections on DPP receivable	(51,142)	7,648
Ending DPP receivable balance	$ 195,935	$ 252,178