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Basis for preparation, consolidation and accounting policies - Summary of the impact from the uncertain tax treatments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Basis for preparation, consolidation and accounting policies
Increase in current tax assets	$ 35,701
Increase in current tax liabilities	21,920
Increase in deferred tax liabilities	20,767
Increase in income taxes expense	$ 6,986

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- References

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- Definition

Amount of increase in current tax asset due to change in regulation.

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- Definition

Amount of increase in current tax liabilities due to change in regulation.

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- Definition

The increase (decrease) in current tax expense (income) due to rate regulation. Rate regulation is a framework for establishing the prices that can be charged to customers for goods or services and that framework is subject to oversight and/or approval by a rate regulator. [Refer: Current tax expense (income)]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 14
-IssueDate 2019-01-01
-Paragraph 34
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- Definition

The increase (decrease) in a deferred tax liability (asset). [Refer: Deferred tax liability (asset)]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 12
-IssueDate 2019-01-01
-Paragraph 81
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