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Financial instruments (Details 6) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Financial instruments [Line Items] |  |
Effect on profit or loss for the period Derivative instruments | $ 3,257 |
Hedging reserve in equity before tax | (3,707) |
Debt [Member] |  |
Financial instruments [Line Items] |  |
Hedging assets | 18,081 |
Hedging liabilities |  | $ (18,853)
Effect on profit or loss for the period Derivative instruments | 11,472 | (29,557)
Hedging reserve in equity before tax | 6,609 | 10,704
Debt [Member] | Cross currency swap contracts [Member] |  |
Financial instruments [Line Items] |  |
Hedging liabilities | (19,195) | (22,771)
Effect on profit or loss for the period Derivative instruments | (12,956) | (25,363)
Hedging reserve in equity before tax | (6,239) | 2,592
Debt [Member] | Forward contract [member] |  |
Financial instruments [Line Items] |  |
Hedging assets | 37,276 | 3,918
Effect on profit or loss for the period Derivative instruments | 24,428 | (4,194)
Hedging reserve in equity before tax | 12,848 | 8,112
Investment [Member] |  |
Financial instruments [Line Items] |  |
Hedging assets |  | 16,381
Hedging liabilities | (21,004) |
Effect on profit or loss for the period Derivative instruments | (20,626) | 17,146
Hedging reserve in equity before tax | (378) | (765)
Investment [Member] | Cross currency swap contracts [Member] |  |
Financial instruments [Line Items] |  |
Hedging liabilities | (21,004) | (889)
Effect on profit or loss for the period Derivative instruments | (20,626) | (711)
Hedging reserve in equity before tax | (378) | (178)
Investment [Member] | Forward contract [member] |  |
Financial instruments [Line Items] |  |
Hedging assets | 0 | 17,270
Effect on profit or loss for the period Derivative instruments | 0 | 17,857
Hedging reserve in equity before tax | $ 0 | $ (587)

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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 2020-01-01 -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 2020-01-01 + 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 2020-01-01 -Paragraph 24A -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_24A_a&doctype=Standard -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph 24A -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_24A_a&doctype=Standard -URIDate 2020-01-01 + 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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