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BENEFIT PLANS - Fair Value of Defined Benefit Pension Plans Assets (Details) - USD ($) $ in Millions | Jul. 31, 2021 | Aug. 01, 2020
--- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | $ 2,118 | $ 1,991
Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 114 | 345
Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 1,764 | 1,414
Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Measured at NAV as a Practical Expedient |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 240 | 232
Common stock |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 103 | 334
Common stock | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 103 | 334
Common stock | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Common stock | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Common stock | Measured at NAV as a Practical Expedient |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Common collective trusts |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 1,105 | 961
Common collective trusts | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Common collective trusts | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 1,044 | 902
Common collective trusts | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Common collective trusts | Measured at NAV as a Practical Expedient |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 61 | 59
Corporate bonds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 432 | 311
Corporate bonds | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Corporate bonds | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 432 | 311
Corporate bonds | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Corporate bonds | Measured at NAV as a Practical Expedient |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Government securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 218 | 131
Government securities | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Government securities | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 218 | 131
Government securities | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Government securities | Measured at NAV as a Practical Expedient |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Mutual funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 58 | 43
Mutual funds | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Mutual funds | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 58 | 43
Mutual funds | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Mutual funds | Measured at NAV as a Practical Expedient |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Mortgage-backed securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 2 | 4
Mortgage-backed securities | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Mortgage-backed securities | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 2 | 4
Mortgage-backed securities | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Mortgage-backed securities | Measured at NAV as a Practical Expedient |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Other |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 21 | 34
Other | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 11 | 11
Other | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 10 | 23
Other | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Other | Measured at NAV as a Practical Expedient |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Private equity and real estate partnerships |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 179 | 173
Private equity and real estate partnerships | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Private equity and real estate partnerships | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Private equity and real estate partnerships | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 0 | 0
Private equity and real estate partnerships | Measured at NAV as a Practical Expedient |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | $ 179 | $ 173

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