Commitments and Contingencies - Additional Information (Details) - Peal [member] - Events after Reporting Period [Member]	Feb. 28, 2019 USD ($)
Disclosure Of Commitments And Contingencies [Line Items]
Termination penalty	$ 20,000,000
Liability recognized	$ 0

The amount of the estimated financial effect of contingent liabilities. [Refer: Contingent liabilities [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 37
-IssueDate 2017-01-01
-Paragraph 86
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2017-03-01&anchor=para_86_a&doctype=Standard
-URIDate 2017-03-09

Name:	ifrs-full_EstimatedFinancialEffectOfContingentLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant