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FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Aug. 01, 2020 | Aug. 03, 2019
Fair Value Disclosures [Abstract] |  |
Effect of one percent increase on fair value of interest rate fair value hedging instruments | $ 60.4 |
Effect of one percent decrease on fair value of interest rate fair value hedging instruments | 57.1 |
Fuel supply and derivative agreements liability, net | 0.1 | $ 0.0
Foreign exchange derivatives liability, net | $ 0.2 |

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