FAIR VALUE MEASUREMENTS OF FINANCIAL INSTRUMENTS - Recurring Fair Value Measurements (Details) - USD ($) $ in Millions	Jul. 30, 2022	Jul. 31, 2021
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
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Noncurrent derivative assets		$ 2
Fair Value, Measurements, Recurring | Level 1 | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Noncurrent derivative assets	$ 0
Fair Value, Measurements, Recurring | Level 1 | Fuel derivatives | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Current derivative assets	0	0
Fair Value, Measurements, Recurring | Level 1 | Foreign currency derivatives | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Current derivative assets	0
Current 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 liability		0
Noncurrent derivative liability	0	0
Fair Value, Measurements, Recurring | Level 2
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Noncurrent derivative assets		0
Fair Value, Measurements, Recurring | Level 2 | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Noncurrent derivative assets	1
Fair Value, Measurements, Recurring | Level 2 | Fuel derivatives | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Current derivative assets	3	1
Fair Value, Measurements, Recurring | Level 2 | Foreign currency derivatives | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Current derivative assets	3
Current 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 liability		33
Noncurrent derivative liability	2	42
Fair Value, Measurements, Recurring | Level 3
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Noncurrent derivative assets		0
Fair Value, Measurements, Recurring | Level 3 | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Noncurrent derivative assets	0
Fair Value, Measurements, Recurring | Level 3 | Fuel derivatives | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Current derivative assets	0	0
Fair Value, Measurements, Recurring | Level 3 | Foreign currency derivatives | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Current derivative assets	0
Current 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 liability		0
Noncurrent derivative liability	$ 0	$ 0