Project debt, Details of project debt (Details) - USD ($) $ in Thousands |
Mar. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Project debt [Abstract] | ||
| Cash held to satisfy non-recourse debt agreements | $ 311,000 | $ 280,000 |
| Non-current | 4,519,942 | 4,925,268 |
| Current | 680,275 | 312,346 |
| Total Project debt | 5,200,217 | $ 5,237,614 |
| Kaxu [Member] | ||
| Project debt [Abstract] | ||
| Current | $ 355,000 |