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FAIR VALUE MEASUREMENTS OF FINANCIAL INSTRUMENTS - Recurring Fair Value Measurements (Details) - USD ($) $ in Millions | Jul. 30, 2022 | Jul. 31, 2021
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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

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