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