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v3.20.1

Summary of significant accounting policies (Details 1) - $ / perunit | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
US Dollar [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Closing foreign exchange rate |  | 748.74 | 694.77 | 614.75
Euros [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Closing foreign exchange rate |  | 839.58 | 794.75 | 739.15
Argentinean Pesos [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Closing foreign exchange rate |  | 12.50 | 18.43 | 32.96
Uruguayan Peso [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Closing foreign exchange rate |  | 20.07 | 21.44 | 21.34
Canadian Dollar [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Closing foreign exchange rate |  | 573.26 | 509.62 | 491.05
Sterling Pound [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Closing foreign exchange rate |  | 983.24 | 882.36 | 832.09
Paraguayan Guarani [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Closing foreign exchange rate |  | 0.12 | 0.12 | 0.11
Swiss Franc [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Closing foreign exchange rate |  | 773.81 | 706.00 | 631.16
Bolivians [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Closing foreign exchange rate |  | 107.58 | 101.28 | 89.61
Australian Dollar [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Closing foreign exchange rate |  | 524.25 | 489.17 | 480.31
Danish Krone [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Closing foreign exchange rate |  | 112.41 | 106.44 | 99.31
Brazilian Real [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Closing foreign exchange rate |  | 186.51 | 179.59 | 185.64
Unidades de Fomento [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Closing foreign exchange rate | [1] | 28,309.94 | 27,565.79 | 26,798.14
Colombian Peso [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Closing foreign exchange rate |  | 0.23 | 0.21 | 0.21
Unidad de indexada [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Closing foreign exchange rate | [2] | 87.98 | 86.19 | 79.62
[1] | The Unidad de Fomento (UF) is a Chilean inflation-indexed, Chilean peso-denominated monetary unit. The UF rate is set daily in advance based on changes in the previous months inflation rate.
[2] | The Unidad Indexada (UI) is a Uruguay inflation-indexed, Uruguayan peso-denominated monetary unit. The UI rate is set daily in advance based on changes in the previous months inflation rate.

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- Definition The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard -URIDate 2019-03-27 + Details
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