INVESTMENT PROPERTIES - Narrative (Details) $ in Millions	6 Months Ended
Jun. 30, 2018 USD ($)
Disclosure of detailed information about investment property [line items]
Additions and acquisitions through business combinations	$ 4,000
Dispositions	$ 2,199

The decrease in investment property resulting from disposals. [Refer: Investment property]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 40
-IssueDate 2017-01-01
-Paragraph 76
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_76_c&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 40
-IssueDate 2017-01-01
-Paragraph 79
-Subparagraph d
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_79_d_iii&doctype=Standard
-URIDate 2017-03-09

Name:	ifrs-full_DisposalsInvestmentProperty
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration