FAIR VALUE MEASUREMENTS OF FINANCIAL INSTRUMENTS - Recurring Fair Value Measurements (Details) - USD ($) $ in Millions	Jan. 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
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other long-term liabilities	Other long-term liabilities
Fair value, measurements, recurring \| Level 1 \| Fuel derivatives \| Designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Current derivative liability	$ 0
Noncurrent derivative liability	0
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
Current derivative liability		0
Fair value, measurements, recurring \| Level 2 \| Fuel derivatives \| Designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Current derivative liability	1
Noncurrent derivative liability	1
Fair value, measurements, recurring \| Level 2 \| Interest rate swaps \| Designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Current derivative assets	13	17
Noncurrent derivative assets	1	5
Current derivative liability		1
Fair value, measurements, recurring \| Level 3 \| Fuel derivatives \| Designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Current derivative liability	0
Noncurrent derivative liability	0
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
Current derivative liability		$ 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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