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Business segment information - Distribution of Income from Operations, Including Restructuring, by Geographical Area (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Segment Reporting Information [Line Items] |  |  |  |
Income from operations, including restructuring | $ 5,108 | $ 108,401 | $ 233,994 | $ 271,641
Ireland |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Income from operations, including restructuring | 95,478 | 81,800 | 270,126 | 194,390
Rest of Europe |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Income from operations, including restructuring | 92,605 | 4,713 | 109,009 | 22,529
U.S. |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Income from operations, including restructuring | (159,704) | 14,399 | (133,997) | 37,667
Rest of World |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Income from operations, including restructuring | $ (23,271) | $ 7,489 | $ (11,144) | $ 17,055

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