BENEFIT PLANS - Amounts Recognized in Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Aug. 01, 2020	Aug. 03, 2019
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Accrued compensation and benefits	$ 1,500	$ 1,900
Pension and other postretirement benefit obligations	267,419	210,827
Total	268,919	212,727
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Accrued compensation and benefits	0	0
Pension and other postretirement benefit obligations	24,709	26,439
Total	24,709	26,439
Postemployment Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Accrued compensation and benefits	2,356	2,356
Pension and other postretirement benefit obligations	5,053	5,053
Total	$ 7,409	$ 7,409