BENEFIT PLANS - Significant Multiemployer Plans (Details) $ in Millions		12 Months Ended
		Aug. 01, 2020 USD ($) Plan	Aug. 03, 2019 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plan, Employer Contribution, Cost		$ 52	$ 41
PPA surcharges		5.00%	10.00%
Minneapolis Food Distributing Industry Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]		No
Multiemployer Plan, Employer Contribution, Cost		$ 11	$ 8
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	[1]	No
Multiemployer Plan, Pension, Significant, Certified Zone Status, Extended Amortization Provision [true false]		false
Minneapolis Retail Meat Cutters And Food Handlers Pension Fund
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]		Implemented
Multiemployer Plan, Employer Contribution, Cost		$ 9	7
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	[1]	No
Multiemployer Plan, Pension, Significant, Certified Zone Status, Extended Amortization Provision [true false]		true
Minneapolis Retail Meat Cutters And Food Handlers Variable Annuity Pension Fund
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]		NA
Multiemployer Plan, Employer Contribution, Cost		$ 3	1
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	[1]	NA
Multiemployer Plan, Pension, Significant, Certified Zone Status, Extended Amortization Provision [true false]		false
Central States, Southeast and Southwest Areas Pension Fund
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]		Implemented
Multiemployer Plan, Employer Contribution, Cost		$ 6	5
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	[1]	No
Multiemployer Plan, Pension, Significant, Certified Zone Status, Extended Amortization Provision [true false]		true
Ufcw Unions And Participating Employers Pension Fund
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]	[2]	Implemented
Multiemployer Plan, Employer Contribution, Cost	[2]	$ 7	4
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	[1],[2]	No
Multiemployer Plan, Pension, Significant, Certified Zone Status, Extended Amortization Provision [true false]	[2]	false
Western Conference Of Teamsters Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]		No
Multiemployer Plan, Employer Contribution, Cost		$ 13	12
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	[1]	No
Multiemployer Plan, Pension, Significant, Certified Zone Status, Extended Amortization Provision [true false]		false
Ufcw Unions And Employers Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]		Implemented
Multiemployer Plan, Employer Contribution, Cost		$ 1	1
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	[1]	No
Multiemployer Plan, Pension, Significant, Certified Zone Status, Extended Amortization Provision [true false]		true
All Other Multiemployer Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plan, Employer Contribution, Cost		$ 2	$ 3
All other multiemployer pension plans | Plan		7

[1] PPA surcharges are 5 percent or 10 percent of eligible contributions and may not apply to all collective bargaining agreements or total contributions to each plan.

[2] These multiemployer pension plans are associated with continued and discontinued operations.