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Income Taxes - Consolidated Reported Provision for Income Taxes Differed from Statutory Rate (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Income Tax Disclosure [Abstract] |  |  |
Taxes at Irish statutory rate of 12.5% (2022:12.5%; 2021:12.5%) | $ 78,058 | $ 70,980 | $ 24,586
Rate differential from amortization of intangible assets | (71,223) | (59,330) | (31,228)
Foreign and other income taxed at higher rates | 35,778 | 52,464 | 51,273
Research & development tax incentives | (3,868) | (2,608) | (3,120)
Movement in valuation allowance | (1,068) | (777) | 3,101
Effects of change in tax rates | 3,154 | (300) | (128)
(Decrease)/ increase in unrecognized tax benefits | (54,347) | 8,392 | 5,246
Investor tax expense on foreign subsidiary earnings | 39,165 |  |
Impact of stock compensation | (11,487) | (8,756) | (9,083)
Other | (2,413) | (654) | 687
Income tax expense allocated to continuing operations | $ 11,749 | $ 59,411 | $ 41,334

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