Receivables Securitization Program - Activity in DPP Receivable (Details) - USD ($) $ in Thousands	9 Months Ended
	Jan. 23, 2021	Jan. 25, 2020	Jan. 23, 2021	Jan. 25, 2020
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Cash collections on DPP receivable	$ (634,499)	$ (359,329)
Receivables Purchase Agreements
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Beginning DPP receivable balance	117,327	57,238
Non-cash additions to DPP receivable	572,683	422,941
Cash collections on DPP receivable	(526,369)	(320,770)
Ending DPP receivable balance	$ 117,327	$ 57,238	$ 163,641	$ 159,409