The amount of cash paid for the settlement of litigation or for other legal issues during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585

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

Commitments and contingencies (Details) $ in Millions		12 Months Ended
Commitments and contingencies (Details) $ in Millions	Jan. 22, 2019 USD ($)	Aug. 31, 2018 USD ($)	May 31, 2019 lawsuit
Loss Contingencies [Line Items]
Payments for legal settlements \| $	$ 209.2	$ 34.5
Rite Aid transactions
Loss Contingencies [Line Items]
Number of lawsuits filed			2
State of Pennsylvania in the court of common pleas of Cumberland County
Loss Contingencies [Line Items]
Number of lawsuits filed			1