Income Tax, Movements in deferred tax assets and liabilities (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Deferred tax assets [Abstract] | ||
| Beginning of period | $ 152,290 | $ 147,966 |
| Increase/(decrease) through the consolidated income statement | 46,855 | 6,003 |
| Increase/(decrease) through other consolidated comprehensive income (equity) | (23,712) | (8,698) |
| Business combinations (Note 5) | 4,410 | |
| Currency translation differences and other | (7,575) | 7,019 |
| End of period | 172,268 | 152,290 |
| Deferred tax liabilities [Abstract] | ||
| Beginning of period | 260,923 | 248,996 |
| Increase/(decrease) through the consolidated income statement | 32,059 | 9,675 |
| Business combinations (Note 5) | 4,910 | |
| Currency translation differences and other | 10,967 | 2,252 |
| End of period | $ 308,859 | $ 260,923 |