BASIS OF PREPARATION - CHANGES IN ACCOUNTING POLICIES AND DISCLOSURES (Details) - IFRS 16	12 Months Ended
Dec. 31, 2017
Top of range
Disclosure of expected impact of initial application of new standards or interpretations [line items]
Percent of assets	4.00%
Bottom of range
Disclosure of expected impact of initial application of new standards or interpretations [line items]
Percent of assets	6.00%

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

No definition available.

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