Fair Values of Financial Instruments Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 30, 2021	Jan. 25, 2020	Jan. 30, 2021	Jan. 25, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Nonrecurring Expense	$ (27,630)	$ 0	$ (27,630)	$ (433)
Finite-lived Intangible Assets, Fair Value Disclosure	1,445	0	1,445	0
Other Assets, Fair Value Disclosure	600	0	600	0
Impaired Assets to be Disposed of by Method Other than Sale, Carrying Value of Asset	(43,194)	(433)	(43,194)	(433)
Receivables, Fair Value Disclosure	0	0	0	0
Property, Plant, and Equipment, Fair Value Disclosure	420	0	420	0
us-gaap_OperatingLeaseRightOfUseAssetfairvalue	13,099	0	13,099	0
Property, Plant, and Equipment, Fair Value Disclosure	0	0	0	0
Fair Value, Net Asset (Liability)	15,564	0	15,564	0
us-gaap_OtherNonrecurringExpensenetoftax	20,506
Property, Plant and Equipment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Nonrecurring Expense	(5,085)			(300)
Impaired Assets to be Disposed of by Method Other than Sale, Carrying Value of Asset	(5,505)	(300)	(5,505)	(300)
Accounts Receivable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Nonrecurring Expense	0			(245)
Impaired Assets to be Disposed of by Method Other than Sale, Carrying Value of Asset	0	(245)	0	(245)
Property Subject to Operating Lease
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Nonrecurring Expense	(13,328)			0
Impaired Assets to be Disposed of by Method Other than Sale, Carrying Value of Asset	(26,427)	0	(26,427)	0
Other Intangible Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Nonrecurring Expense	(6,278)			0
Impaired Assets to be Disposed of by Method Other than Sale, Carrying Value of Asset	(7,723)	0	(7,723)	0
Other Noncurrent Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Nonrecurring Expense	(2,939)			0
Impaired Assets to be Disposed of by Method Other than Sale, Carrying Value of Asset	(3,539)	0	(3,539)	0
Accrued Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Nonrecurring Expense	0			(112)
Impaired Assets to be Disposed of by Method Other than Sale, Carrying Value of Asset	0	$ (112)	0	$ (112)
Phantom Share Units (PSUs)
Fair Value Disclosures [Abstract]
Other Deferred Compensation Arrangements, Liability, Classified, Noncurrent	636		636
Other Deferred Compensation Arrangements, Liability, Current and Noncurrent	1,729		1,729
Other Deferred Compensation Arrangements, Liability, Current	1,093		1,093
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Deferred Compensation Arrangements, Liability, Current	1,093		1,093
Other Deferred Compensation Arrangements, Liability, Classified, Noncurrent	$ 636		$ 636