Derivative Financial Instruments - Effect of Interest Rate Contracts and Interest Rate Swaps on Consolidated Statements of Income and Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
Apr. 25, 2020	Apr. 27, 2019	Apr. 28, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Loss on interest rate swap agreements	$ (18,712)	$ (2,903)	$ 0
Interest rate contracts \| Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified form Accumulated Other Comprehensive Loss	(10,458)	(2,908)	(2,809)
Interest rate contracts \| Other income, net
Derivative Instruments, Gain (Loss) [Line Items]
Loss on interest rate swap agreements	$ (18,712)	$ (2,903)	$ 0

Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e689-108580

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e637-108580

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration