v3.20.4

Cash and cash equivalents (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | ---
Cash and cash equivalents [abstract] |  |  |  |
Cash at bank and on hand - non restricted | $ 588,690 | $ 223,867 |  |
Cash at bank and on hand - restricted | 279,811 | 338,928 |  |
Cash and cash equivalents | 868,501 | 562,795 | $ 631,542 | $ 669,387
U.S. Dollar [Member] |  |  |  |
Cash and cash equivalents [abstract] |  |  |  |
Cash and cash equivalents | 575,567 | 313,678 |  |
Euro [Member] |  |  |  |
Cash and cash equivalents [abstract] |  |  |  |
Cash and cash equivalents | 196,431 | 181,961 |  |
South African Rand [Member] |  |  |  |
Cash and cash equivalents [abstract] |  |  |  |
Cash and cash equivalents | 40,561 | 47,679 |  |
Mexico, Peso [Member] |  |  |  |
Cash and cash equivalents [abstract] |  |  |  |
Cash and cash equivalents | 23,570 | 64 |  |
Algerian Dinar [Member] |  |  |  |
Cash and cash equivalents [abstract] |  |  |  |
Cash and cash equivalents | 21,114 | 9,301 |  |
Others [Member] |  |  |  |
Cash and cash equivalents [abstract] |  |  |  |
Cash and cash equivalents | $ 11,258 | $ 10,176 |  |

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- Definition The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_45&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2020-01-01 -Paragraph B13 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B -URIDate 2020-01-01 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_i&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of cash and cash equivalents whose use or withdrawal is restricted. [Refer: Cash and cash equivalents] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard -URIDate 2020-01-01 + Details
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