COMPREHENSIVE (LOSS) INCOME AND ACCUMULATED OTHER COMPREHENSIVE LOSS - Reclassification out of Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2020	Nov. 02, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense, net	$ (12,036)	$ (2,370)
Cost of sales	5,706,108	5,389,401
Benefit for income taxes	(991)	(66,955)
Net income (loss)	324	(383,408)
Expected reclassification	45,200
Reclassification out of accumulated other comprehensive income | Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net periodic benefit income, excluding service cost	(309)	774
Benefit for income taxes	103	(202)
Net income (loss)	(206)	572
Reclassification out of accumulated other comprehensive income | Cash Flow Derivatives | Swap Agreements
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense, net	12,036	2,370
Benefit for income taxes	(3,230)	(428)
Net income (loss)	8,806	1,942
Reclassification out of accumulated other comprehensive income | Cash Flow Derivatives | Other Cash Flow Derivatives
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	169	0
Benefit for income taxes	(45)	0
Net income (loss)	$ 124	$ 0