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Financial instruments (Details 6) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Financial instruments [Line Items] |  |
Effect on profit or loss for the period Derivative instruments | $ (18,707) | $ 16
Hedging reserve in equity before tax | 1,982 |
Debt [Member] |  |
Financial instruments [Line Items] |  |
Hedging liabilities | (18,853) | (3,893)
Effect on profit or loss for the period Derivative instruments | (29,557) | (13,615)
Hedging reserve in equity before tax | 10,704 | 9,722
Debt [Member] | Cross currency swap contracts [Member] |  |
Financial instruments [Line Items] |  |
Hedging liabilities | (22,771) | (17,318)
Effect on profit or loss for the period Derivative instruments | (25,363) | (18,859)
Hedging reserve in equity before tax | 2,592 | 1,541
Debt [Member] | Forward contract [member] |  |
Financial instruments [Line Items] |  |
Hedging assets | 3,918 | 13,425
Effect on profit or loss for the period Derivative instruments | (4,194) | 5,244
Hedging reserve in equity before tax | 8,112 | 8,181
Investment [Member] |  |
Financial instruments [Line Items] |  |
Hedging assets | 16,381 | 18,146
Effect on profit or loss for the period Derivative instruments | 17,146 | 19,911
Hedging reserve in equity before tax | (765) | (1,765)
Investment [Member] | Cross currency swap contracts [Member] |  |
Financial instruments [Line Items] |  |
Hedging liabilities | (889) |
Effect on profit or loss for the period Derivative instruments | (711) |
Hedging reserve in equity before tax | (178) |
Investment [Member] | Forward contract [member] |  |
Financial instruments [Line Items] |  |
Hedging assets | 17,270 | 18,146
Effect on profit or loss for the period Derivative instruments | 17,857 | 19,911
Hedging reserve in equity before tax | $ (587) | $ (1,765)

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- Definition The gains (losses) on hedging instruments in fair value hedges. [Refer: Fair value hedges [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 24 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_24_a_i&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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- Definition The amount of a hedging instrument, recognised as an asset. [Refer: Hedging instruments [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 24A -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_24A_a&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of a hedging instrument, recognised as a liability. [Refer: Hedging instruments [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 24A -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_24A_a&doctype=Standard -URIDate 2019-03-27 + Details
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- References No definition available. + Details
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- Definition A component of gross equity representing the hedging reserve. + References No definition available. + Details
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- Details
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- Details
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- Details
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