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Business segment information - Distribution of Depreciation and Amortization by Geographical Area (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization expense | $ 140,636 | $ 16,801 | $ 175,317 | $ 48,981
Ireland |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization expense | 9,012 | 8,330 | 26,943 | 24,112
Rest of Europe |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization expense | 3,793 | 1,631 | 6,964 | 4,623
U.S. |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization expense | 125,238 | 5,673 | 136,322 | 16,886
Rest of World |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization expense | $ 2,593 | $ 1,167 | $ 5,088 | $ 3,360

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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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