Prepaid Land Lease Payments - Additional Information (Detail)	12 Months Ended
Dec. 31, 2018
Disclosure Of Arrangements Involving Legal Form Of Lease [Abstract]
Long-term operating lease duration	P50Y

The general description of the lessee's significant leasing arrangements for operating leases including, but not limited to: (a) the basis on which contingent rent payable is determined; (b) the existence and terms of renewal or purchase options and escalation clauses; and (c) restrictions imposed by lease arrangements, such as those concerning dividends, additional debt and further leasing.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2019-01-01
-Name IAS
-Number 17
-IssueDate 2018-01-01
-Paragraph 35
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2018-03-02&anchor=para_35_d&doctype=Standard&book=b
-URIDate 2018-03-16

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