Derivative Financial Instruments - Effect of Derivative Instruments in Cash Flow Hedging Relationships on Condensed Consolidated Statements of Income and Other Comprehensive Income (OCI) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 23, 2021	Jan. 25, 2020	Jan. 23, 2021	Jan. 25, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Accumulated other comprehensive loss expected to be reclassified into earnings			$ (1,363)
Gain (loss) recognized in income on derivative	$ 145	$ (485)	(635)	$ (6,048)
Interest rate contract
Derivative Instruments, Gain (Loss) [Line Items]
Accumulated other comprehensive loss expected to be reclassified into earnings	(341)	(8,667)	(1,023)	(10,117)
Interest rate contract | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income on derivative				$ (6,048)
Interest rate contract | Other income, net | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income on derivative	$ 145	$ (485)	$ (635)