Customer Financing - Activity in DPP Receivables (Details) - USD ($) $ in Thousands	9 Months Ended
	Jan. 23, 2021	Jan. 25, 2020	Jan. 23, 2021	Jan. 25, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Cash collections on DPP receivable	$ (634,499)	$ (359,329)
Customer Finance Contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning DPP receivable balance	228,019	121,657
Non-cash additions to DPP receivable	86,986	95,330
Cash collections on DPP receivable	(108,130)	(38,559)
Ending DPP receivable balance	$ 228,019	$ 121,657	$ 206,875	$ 178,428