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Cash and cash equivalents (Details 5) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | ---
Cash And Cash Equivalent [Line Items] |  |  |  |
Cash and cash equivalents | $ 509,102 | $ 588,530 | $ 556,066 | $ 630,438
Other current financial assets | 348,069 | 505,490 |  |
Other non-current financial hedge assets | 51,925 | 8,778 |  |
Other current financial liabilities | (68,955) | (291,128) |  |
Lease liabilities, current | 5,528 | 7,694 |  |
Other non-current financial liabilities | (1,899,513) | (1,488,723) |  |
Lease liabilities, non-current | 25,546 | 30,203 |  |
Total | 1,105,095 | 719,810 |  |
Net Debt [Member] |  |  |  |
Cash And Cash Equivalent [Line Items] |  |  |  |
Cash and cash equivalents | 509,102 | 588,530 |  |
Other current financial assets | 348,069 | 505,490 |  |
Other non-current financial hedge assets | 37,276 | 3,918 |  |
Other current financial liabilities | (68,955) | (291,128) |  |
Lease liabilities, current | (5,528) | (7,694) |  |
Other non-current financial liabilities | (1,899,513) | (1,488,723) |  |
Lease liabilities, non-current | (25,546) | (30,203) |  |
Total | $ (1,105,095) | $ (719,810) |  |

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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 current lease liabilities. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_47_b&doctype=Standard -URIDate 2020-01-01 + Details
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