Long-term Debt and Finance Lease Obligations, Lines of Credit and Fair Value Disclosure - Narrative (Details) - USD ($)		3 Months Ended		9 Months Ended
	Oct. 30, 2024	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024	Oct. 04, 2024	Apr. 30, 2024
Debt Instrument
Fair value of long-term debt		$ 2,454,000,000		$ 2,454,000,000			$ 1,375,000,000
Finance lease obligations		107,301,000		107,301,000			101,818,000
Interest income		3,365,000	$ 2,238,000	9,543,000	$ 10,290,000
Capitalized interest		564,000	$ 901,000	1,472,000	$ 2,381,000
Series I And J Senior Notes | Senior Notes
Debt Instrument
Principal amount						$ 250,000,000
Debt outstanding		250,000,000		250,000,000
Series I Senior Notes | Senior Notes
Debt Instrument
Principal amount						$ 150,000,000
Interest rate						5.23%
Series J Senior Notes | Senior Notes
Debt Instrument
Principal amount						$ 100,000,000
Interest rate						5.43%
Incremental Term Loan | Revolving Credit Facility | Line of Credit
Debt Instrument
Debt outstanding		850,000,000		850,000,000
Maximum borrowing capacity	$ 850,000,000
Quarterly payments	$ 10,625,000
Credit Facilities | Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Line of Credit
Debt Instrument
Basis spread on variable rate	0.10%
Credit Facilities | Revolving Credit Facility | Federal Funds | Line of Credit
Debt Instrument
Basis spread on variable rate	0.50%
Credit Facilities | Revolving Credit Facility | Daily Simple Secured Overnight Financing Rate | Line of Credit
Debt Instrument
Basis spread on variable rate	1.00%
Credit Facilities | Minimum | Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Line of Credit
Debt Instrument
Basis spread on variable rate	0.00%
Credit Facilities | Minimum | Revolving Credit Facility | Base Rate | Line of Credit
Debt Instrument
Basis spread on variable rate	1.10%
Credit Facilities | Minimum | Revolving Credit Facility | Daily Simple Secured Overnight Financing Rate | Line of Credit
Debt Instrument
Basis spread on variable rate	0.10%
Credit Facilities | Maximum | Revolving Credit Facility | Base Rate | Line of Credit
Debt Instrument
Basis spread on variable rate	1.70%
Credit Facilities | Maximum | Revolving Credit Facility | Daily Simple Secured Overnight Financing Rate | Line of Credit
Debt Instrument
Basis spread on variable rate	0.70%
Unsecured Revolving Credit Facility Due January 2024 | Revolving Credit Facility
Debt Instrument
Maximum borrowing capacity		850,000,000		850,000,000
Fair value of amount outstanding		0		0			0
Unsecured Revolving Line of Credit | Line of Credit
Debt Instrument
Maximum borrowing capacity		50,000,000		50,000,000
Fair value of amount outstanding		0		0			$ 0
Unsecured Revolving Line of Credit | Letter of Credit
Debt Instrument
Maximum borrowing capacity		$ 308,000		$ 308,000