ACCOUNTING POLICIES - PHARMACY CONTRACT (Details) - Pharmacy - Sales $ in Millions	3 Months Ended
Nov. 09, 2019 USD ($)
Description of Business, Basis of Presentation and Principles of Consolidation
Decrease in sales	$ (29)
Increase in current liabilities	$ 29

Amount of increase (decrease) in current liabilities classified as other.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

Name:	us-gaap_IncreaseDecreaseInOtherCurrentLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration