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16. Property, plant and equipment (Details Narrative)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property Plant And Equipment Details Narrative Abstract
Depreciation average rate	12.3%	13.6%	10.9%

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- References

No definition available.

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- Definition

The useful lives or depreciation rates used for property, plant and equipment. [Refer: Property, plant and equipment]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2018-01-01
-Paragraph 73
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2018-03-01&anchor=para_73_c&doctype=Standard
-URIDate 2018-03-16

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