Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Parenthetical) (Detail)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Fixed deposits [member]
Cash and cash equivalents [Line Items]
Borrowings, maturity	90 days or less	90 days or less
Certificate of Deposit [member]
Cash and cash equivalents [Line Items]
Borrowings, maturity	90 days or less	90 days or less

The maturity of borrowings. [Refer: Borrowings]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2018-01-01
-Paragraph 7
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_7&doctype=Standard
-URIDate 2018-03-16

Name:	ifrs-full_BorrowingsMaturity
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration