Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of changes in equity [abstract]
Income tax relating to cash flow hedges of other comprehensive income	$ 11,322	$ 52,282	$ 49,106
Income tax relating to changes in revaluation surplus of other comprehensive income	$ (139,223)	$ 0

The amount of income tax relating to amounts recognised in other comprehensive income in relation to changes in a revaluation surplus. [Refer: Revaluation surplus; Other comprehensive income]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2017-01-01
-Paragraph 81
-Subparagraph ab
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_ab&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 90
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_90&doctype=Standard
-URIDate 2017-03-09

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Period Type:	duration