The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

Name:	us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Acquisitions (Details) $ in Millions	3 Months Ended	6 Months Ended
Acquisitions (Details) $ in Millions	Feb. 29, 2020 USD ($)	Feb. 29, 2020 USD ($)	Sep. 30, 2017 distribution_center
Rite Aid Corporation
Business Acquisition [Line Items]
Number of distribution centers expected to be acquired \| distribution_center			3
Rite Aid Corporation - Second Distribution Center
Business Acquisition [Line Items]
Payments to acquire business		$ 63
Rite Aid Corporation - First Distribution Center
Business Acquisition [Line Items]
Payments to acquire business	$ 61
Retail Pharmacy USA
Business Acquisition [Line Items]
Payments to acquire business	$ 60	$ 140