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BENEFIT PLANS - Fair Value of Defined Benefit Pension Plans Assets (Details) - USD ($) $ in Thousands | Aug. 01, 2020 | Aug. 03, 2019
--- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | $ 1,990,568 | $ 2,496,547
Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 344,964 | 403,872
Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 1,413,359 | 1,804,632
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 | 232,245 | 288,043
Common stock |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 334,194 | 397,800
Common stock | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 334,194 | 397,800
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 | 960,712 | 1,130,094
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 | 901,258 | 1,046,590
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 | 59,454 | 83,504
Corporate bonds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 310,694 | 362,251
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 | 310,694 | 362,251
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 | 131,424 | 248,872
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 | 131,424 | 248,872
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 | 43,323 | 62,723
Mutual funds | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 456 | 469
Mutual funds | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 42,867 | 62,254
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 | 3,979 | 10,920
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 | 3,979 | 10,920
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 | 33,451 | 79,348
Other | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 10,314 | 5,603
Other | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Plan assets | 23,137 | 73,745
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 | 172,791 | 204,539
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 | $ 172,791 | $ 204,539

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