BENEFIT PLANS - Net Periodic Benefit (Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Aug. 01, 2020
Pension Benefits
Net Periodic Benefit (Income) Cost
Expected Return on plan assets	$ (82)	$ (104)	$ (105)
Interest cost	38	37	57
Amortization of prior service credit	0	0	0
Amortization of net actuarial loss (gain)	1	1	0
Settlement (gain) charge	0	0	11
Net periodic benefit (income) cost	$ (43)	$ (66)	$ (37)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Net periodic benefit income, excluding service cost	Net periodic benefit income, excluding service cost	Net periodic benefit income, excluding service cost
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Net periodic benefit income, excluding service cost	Net periodic benefit income, excluding service cost	Net periodic benefit income, excluding service cost
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Net periodic benefit income, excluding service cost	Net periodic benefit income, excluding service cost	Net periodic benefit income, excluding service cost
Defined benefit plan, net periodic benefit (cost) credit, settlement gain (loss), statement of income or comprehensive income			Net periodic benefit income, excluding service cost
Other Changes in Plan Assets and Benefits Obligations Recognized in Other Comprehensive Income (Loss)
Net actuarial loss (gain)	$ 59	$ (225)	$ 109
Prior service (benefit) cost	0	0	0
Amortization of prior service benefit	0	0	0
Amortization of net actuarial (gain) loss	0	(1)	0
Total (benefit) expense recognized in Other comprehensive income (loss)	59	(226)	109
Total (benefit) expense recognized in net periodic benefit cost (income) and Other comprehensive income (loss)	16	(292)	72
Other Postretirement Benefits
Net Periodic Benefit (Income) Cost
Expected Return on plan assets	0	0	0
Interest cost	0	0	1
Amortization of prior service credit	3	(1)	(1)
Amortization of net actuarial loss (gain)	0	(1)	(2)
Settlement (gain) charge	0	(17)	0
Net periodic benefit (income) cost	$ 3	$ (19)	$ (2)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]			Net periodic benefit income, excluding service cost
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration]	Net periodic benefit income, excluding service cost	Net periodic benefit income, excluding service cost	Net periodic benefit income, excluding service cost
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]		Net periodic benefit income, excluding service cost
Defined benefit plan, net periodic benefit (cost) credit, settlement gain (loss), statement of income or comprehensive income		Net periodic benefit income, excluding service cost
Other Changes in Plan Assets and Benefits Obligations Recognized in Other Comprehensive Income (Loss)
Net actuarial loss (gain)	$ (3)	$ (8)	$ 0
Prior service (benefit) cost	0	25	0
Amortization of prior service benefit	(3)	3	1
Amortization of net actuarial (gain) loss	0	1	2
Total (benefit) expense recognized in Other comprehensive income (loss)	(6)	21	3
Total (benefit) expense recognized in net periodic benefit cost (income) and Other comprehensive income (loss)	$ (3)	$ 2	$ 1