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Business segment information - Distribution of Income from Operations, Excluding Restructuring by Geographical Area (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Segment Reporting Information [Line Items] |  |  |  |
Operating income (loss) excluding restructuring | $ 112,872 | $ 75,038 | $ 228,886 | $ 181,329
Ireland |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating income (loss) excluding restructuring | 85,736 | 56,744 | 174,648 | 130,679
Rest of Europe |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating income (loss) excluding restructuring | 8,794 | 7,120 | 16,404 | 17,816
U.S. |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating income (loss) excluding restructuring | 12,470 | 9,377 | 25,707 | 23,268
Rest of World |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating income (loss) excluding restructuring | $ 5,872 | $ 1,797 | $ 12,127 | $ 9,566

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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