BENEFIT PLANS - Defined Benefit Pension Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 01, 2020	Aug. 03, 2019	Oct. 22, 2018
Changes in Plan Assets
Fair value of plan assets at beginning of year	$ 2,496,547
Fair value of plan assets at end of year	1,990,568	$ 2,496,547
Pension Plan
Changes in Benefit Obligation
Benefit obligation at beginning of year	2,709,274	0
Benefit obligation at acquisition date of October 22, 2018			$ 2,499,954
Plan amendment	0	0
Service cost	0	0
Interest cost	57,495	75,706
Actuarial loss (gain)	276,635	249,899
Settlements paid	(689,989)	0
Benefits paid	(93,928)	(116,285)
Benefit obligation at end of year	2,259,487	2,709,274
Changes in Plan Assets
Fair value of plan assets at beginning of year	2,496,547	0
Fair value of plan assets at acquisition date of October 22, 2018			2,305,020
Actual return on plan assets	261,839	303,696
Employer contributions	16,099	4,116
Settlements paid	(689,989)	0
Benefits paid	(93,928)	(116,285)
Fair value of plan assets at end of year	1,990,568	2,496,547
Unfunded status at end of year	(268,919)	(212,727)
Other Postretirement Benefits
Changes in Benefit Obligation
Benefit obligation at beginning of year	37,682	0
Benefit obligation at acquisition date of October 22, 2018			52,276
Plan amendment	0	(4,199)
Service cost	54	173
Interest cost	943	1,447
Actuarial loss (gain)	719	(9,836)
Settlements paid	0	0
Benefits paid	(2,285)	(2,179)
Benefit obligation at end of year	37,113	37,682
Changes in Plan Assets
Fair value of plan assets at beginning of year	11,243	0
Fair value of plan assets at acquisition date of October 22, 2018			$ 11,586
Actual return on plan assets	845	260
Employer contributions	2,601	1,636
Settlements paid	0	0
Benefits paid	(2,285)	(2,239)
Fair value of plan assets at end of year	12,404	11,243
Unfunded status at end of year	$ (24,709)	$ (26,439)