BENEFIT PLANS BENEFIT PLANS - Net Periodic Benefit Cost (Income) Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Nov. 02, 2019	Oct. 27, 2018
Pension Benefits
Net Periodic Benefit Cost
Service cost	$ 0	$ 0
Interest cost	16,690	1,847
Expected return on plan assets	(27,482)	(2,724)
Amortization of net actuarial loss (gain)	3	0
Net periodic benefit (income) cost	(10,789)	(877)
Contributions to benefit plans	(4,100)	(37)
Other Postretirement Benefits
Net Periodic Benefit Cost
Service cost	14	4
Interest cost	236	38
Expected return on plan assets	(54)	(5)
Amortization of net actuarial loss (gain)	(777)	0
Net periodic benefit (income) cost	(581)	37
Contributions to benefit plans	$ (100)	$ (9)