FAIR VALUE MEASUREMENTS OF FINANCIAL INSTRUMENTS - Recurring Fair Value Measurements (Details) - USD ($) $ in Millions	Apr. 27, 2024	Jul. 29, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Prepaid expenses and other current assets	Prepaid expenses and other current assets
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other long-term assets	Other long-term assets
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued expenses and other current liabilities	Accrued expenses and other current liabilities
Fair value, measurements, recurring \| Level 1 \| Interest rate swaps \| Designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Current derivative assets	$ 0	$ 0
Noncurrent derivative assets	0	0
Fair value, measurements, recurring \| Level 1 \| Fuel derivatives \| Designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Current derivative liability	0	0
Fair value, measurements, recurring \| Level 2 \| Interest rate swaps \| Designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Current derivative assets	12	17
Noncurrent derivative assets	4	5
Fair value, measurements, recurring \| Level 2 \| Fuel derivatives \| Designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Current derivative liability	1	1
Fair value, measurements, recurring \| Level 3 \| Interest rate swaps \| Designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Current derivative assets	0	0
Noncurrent derivative assets	0	0
Fair value, measurements, recurring \| Level 3 \| Fuel derivatives \| Designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Current derivative liability	$ 0	$ 0

Indicates line item in statement of financial position that includes derivative asset classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483466/210-20-50-3

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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