v3.20.4

Derivative financial instruments, Breakdown of fair value amounts (Details) - Cash Flow Hedge [Member] - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Breakdown of fair value amount of derivative financial instruments [Abstract] |  |
Assets | $ 1,559 | $ 5,230
Liabilities | 328,184 | 298,744
Interest Rate Derivatives [Member] |  |
Breakdown of fair value amount of derivative financial instruments [Abstract] |  |
Assets | 898 | 1,619
Liabilities | 302,302 | 298,744
Foreign Exchange Derivative Instruments [Member] |  |
Breakdown of fair value amount of derivative financial instruments [Abstract] |  |
Assets | 661 | 3,610
Liabilities | 0 | 0
Notes Conversion Option [Member] |  |
Breakdown of fair value amount of derivative financial instruments [Abstract] |  |
Assets | 0 | 0
Liabilities | $ 25,882 | $ 0

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