v3.20.4

Financial instruments by category, Reconciliation to statement of financial position (Details) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 USD ($) mi | May 31, 2020 | Dec. 31, 2019 USD ($)
Financial Assets [Abstract] |  |  |
Financial assets | $ 1,490,073 |  | $ 1,190,527
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 6,658,891 |  | 6,020,060
Befesa Agua Tenes [Member] |  |  |
Financial Assets [Abstract] |  |  |
Percentage interest acquired |  | 51.00% |
Corporate Debt [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 993,725 |  | 723,791
Project Debt [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 5,237,614 |  | 4,852,348
Related Parties - Non-current [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 6,810 |  | 17,115
Trade and Other Current Liabilities [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 92,557 |  | 128,062
Derivative Liabilities [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 328,184 |  | 298,744
Derivative Liabilities [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 1,559 |  | 5,230
Investment in Ten West Link [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | $ 12,896 |  | 9,874
Percentage interest acquired | 12.50% |  |
Length of transmission lines | mi | 114 |  |
Investment in Rioglass [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | $ 2,687 |  | 7,000
Percentage interest acquired | 15.12% |  |
Financial Assets under IFRIC 12 (Short-term Portion) [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | $ 178,198 |  | 160,624
Trade and Other Receivables [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 331,735 |  | 317,568
Cash and Cash Equivalents [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 868,501 |  | 562,795
Other Financial Investments [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 94,497 |  | 127,436
Amortized Cost [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 6,330,707 |  | 5,721,316
Amortized Cost [Member] | Corporate Debt [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 993,725 |  | 723,791
Amortized Cost [Member] | Project Debt [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 5,237,614 |  | 4,852,348
Amortized Cost [Member] | Related Parties - Non-current [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 6,810 |  | 17,115
Amortized Cost [Member] | Trade and Other Current Liabilities [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 92,557 |  | 128,062
Amortized Cost [Member] | Derivative Liabilities [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 0 |  | 0
Fair Value Through Profit or Loss [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 328,184 |  | 298,744
Fair Value Through Profit or Loss [Member] | Corporate Debt [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 0 |  | 0
Fair Value Through Profit or Loss [Member] | Project Debt [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 0 |  | 0
Fair Value Through Profit or Loss [Member] | Related Parties - Non-current [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 0 |  | 0
Fair Value Through Profit or Loss [Member] | Trade and Other Current Liabilities [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 0 |  | 0
Fair Value Through Profit or Loss [Member] | Derivative Liabilities [Member] |  |  |
Financial Liabilities [Abstract] |  |  |
Financial liabilities | 328,184 |  | 298,744
Amortized Cost [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 1,472,931 |  | 1,168,423
Amortized Cost [Member] | Derivative Liabilities [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 0 |  | 0
Amortized Cost [Member] | Investment in Ten West Link [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 0 |  | 0
Amortized Cost [Member] | Investment in Rioglass [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 0 |  | 0
Amortized Cost [Member] | Financial Assets under IFRIC 12 (Short-term Portion) [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 178,198 |  | 160,624
Amortized Cost [Member] | Trade and Other Receivables [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 331,735 |  | 317,568
Amortized Cost [Member] | Cash and Cash Equivalents [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 868,501 |  | 562,795
Amortized Cost [Member] | Other Financial Investments [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 94,497 |  | 127,436
Fair Value Through Other Comprehensive Income [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 12,896 |  | 9,874
Fair Value Through Other Comprehensive Income [Member] | Derivative Liabilities [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 0 |  | 0
Fair Value Through Other Comprehensive Income [Member] | Investment in Ten West Link [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 12,896 |  | 9,874
Fair Value Through Other Comprehensive Income [Member] | Investment in Rioglass [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 0 |  | 0
Fair Value Through Other Comprehensive Income [Member] | Financial Assets under IFRIC 12 (Short-term Portion) [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 0 |  | 0
Fair Value Through Other Comprehensive Income [Member] | Trade and Other Receivables [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 0 |  | 0
Fair Value Through Other Comprehensive Income [Member] | Cash and Cash Equivalents [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 0 |  | 0
Fair Value Through Other Comprehensive Income [Member] | Other Financial Investments [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 0 |  | 0
Fair Value Through Profit or Loss [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 4,246 |  | 12,230
Fair Value Through Profit or Loss [Member] | Derivative Liabilities [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 1,559 |  | 5,230
Fair Value Through Profit or Loss [Member] | Investment in Ten West Link [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 0 |  | 0
Fair Value Through Profit or Loss [Member] | Investment in Rioglass [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 2,687 |  | 7,000
Fair Value Through Profit or Loss [Member] | Financial Assets under IFRIC 12 (Short-term Portion) [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 0 |  | 0
Fair Value Through Profit or Loss [Member] | Trade and Other Receivables [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 0 |  | 0
Fair Value Through Profit or Loss [Member] | Cash and Cash Equivalents [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | 0 |  | 0
Fair Value Through Profit or Loss [Member] | Other Financial Investments [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets | $ 0 |  | 0
Loans Receivable [Member] | Befesa Agua Tenes [Member] |  |  |
Financial Assets [Abstract] |  |  |
Financial assets |  |  | $ 13,000

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