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Distribution of Net Revenue by Geographical Area (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Revenue	$ 641,610	$ 591,781	$ 1,261,735	$ 1,169,847
Ireland
Segment Reporting Information [Line Items]
Revenue	260,120	231,315	495,230	463,663
Rest of Europe
Segment Reporting Information [Line Items]
Revenue	96,692	78,922	191,732	151,479
U.S.
Segment Reporting Information [Line Items]
Revenue	221,201	229,938	446,871	453,020
Rest of World
Segment Reporting Information [Line Items]
Revenue	$ 63,597	$ 51,606	$ 127,902	$ 101,685

X

- Definition

Amount of revenue earned from products sold or services provided under the terms of a contract, including, but not limited to, government contracts and construction contracts, classified as other.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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+ References

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