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Business segment information - Distribution of Total Assets by Geographical Area (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Assets	$ 3,584,464	$ 3,435,606
Ireland
Segment Reporting Information [Line Items]
Assets	1,936,492	1,675,980
Rest of Europe
Segment Reporting Information [Line Items]
Assets	639,961	671,218
U.S.
Segment Reporting Information [Line Items]
Assets	830,877	909,202
Rest of World
Segment Reporting Information [Line Items]
Assets	$ 177,134	$ 179,206

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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