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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2024

Income Tax Disclosure [Abstract]

Summary of Components of Income Before Provision for Income Taxes

The components of income before income tax expense are as follows:

			Year ended
			December 31, 2024			December 31, 2023			December 31, 2022
			(in thousands)
Ireland			$	736,374		$	624,642		$	432,963
United States			(304,546)			(352,532)			(270,440)
Other			437,356			352,357			405,328
Income before income tax expense			$	869,184		$	624,467		$	567,851

Summary of Components of Provision for Income Taxes

The components of income tax expense are as follows:

			Year ended
			December 31, 2024			December 31, 2023			December 31, 2022
Income tax expense:			(in thousands)
Current tax (benefit)/expense:
Ireland			$	118,255		$	80,427		$	53,248
United States			(45,307)			(42,428)			60,753
Other			105,304			59,153			70,395
Total current tax expense			178,252			97,152			184,396
Deferred tax (benefit)/expense:
Ireland			(26,663)			45,253			(6,166)
United States			(69,493)			(143,323)			(118,475)
Other			(4,386)			12,667			(344)
Total deferred tax benefit			(100,542)			(85,403)			(124,985)
Income tax expense			77,710			11,749			59,411
Income tax expense was allocated to the following components of other comprehensive income:
Currency impact on long term funding			1,728			(3,903)			7,211
Retirement benefit obligations			(895)			—			—
Cash flow hedge			647			301			—
Total			$	79,190		$	8,147		$	66,622

Schedule of Reconciliation of Consolidated Reported Provision for Income Taxes and Statutory Rate

The Company's consolidated reported income tax expense differed from the amount that would result from applying the Irish statutory rate as set forth below:

			Year ended
			December 31, 2024			December 31, 2023			December 31, 2022
			(in thousands)
Taxes at Irish statutory rate of 12.5% (2023:12.5%; 2022:12.5%)			$	108,648		$	78,058		$	70,980
Rate differential from amortization of intangible assets			(48,240)			(71,223)			(59,330)
Global Minimum Tax			16,719			—			—
Foreign and other income taxed at higher rates			49,703			35,778			52,464
Research & development tax incentives			(3,041)			(3,868)			(2,608)
Movement in valuation allowance			(5,279)			(1,068)			(777)
Effects of change in tax rates			25,691			3,154			(300)
(Decrease)/ increase in unrecognized tax benefits			(59,456)			(54,347)			8,392
Investor tax expense on foreign subsidiary earnings			(7,995)			39,165			—
Impact of stock compensation			(9,385)			(11,487)			(8,756)
Other and non-deductible expenses			10,345			(2,413)			(654)
Income tax expense			$	77,710		$	11,749		$	59,411

Schedule of Tax Effects of Temporary Differences that Give Rise to Significant Portions of Deferred Tax Assets and Deferred Tax Liabilities

The tax effects of temporary differences and carryforwards that give rise to significant portions of deferred tax assets and deferred tax liabilities are presented below:

			December 31, 2024			December 31, 2023
Deferred tax liabilities:			(in thousands)
Property, plant and equipment			$	2,869		$	7,547
Operating right-of-use-assets			15,633			16,108
Goodwill			43,390			39,014
Intangible assets			901,731			950,055
Investments in foreign subsidiaries			34,983			52,408
Other			3,887			7,982
Total deferred tax liabilities recognized			1,002,493			1,073,114
Deferred tax assets:
Operating loss and tax credits carryforwards			164,904			124,150
Property, plant and equipment			7,869			9,082
Operating lease liabilities			21,503			20,190
Intangible assets			45			2,166
Stock compensation			14,309			17,605
Other liabilities			78,428			84,928
Unearned revenue			10,364			23,748
Other			6,298			8,774
Total deferred tax assets			303,720			290,643
Valuation allowance for deferred tax assets			(38,955)			(42,967)
Deferred tax assets recognized			264,765			247,676
Overall net deferred tax liability			$	(737,728)		$	(825,438)

Schedule of Expected Expiry Dates of NOL's

The expected expiry dates of the US NOLs are as follows: 

			Federal NOL's			State NOL's
			(in thousands)
2025-2038			$	8,035		$	262,170
2039-2043			—			6,057
Indefinite			—			9,601
			$	8,035		$	277,828

Schedule of Unrecognized Tax Benefits Roll Forward

A reconciliation of the beginning and ending amount of total unrecognized tax benefits is as follows:

			December 31, 2024			December 31, 2023			December 31, 2022
			(in thousands)
Unrecognized tax benefits at start of year			$	160,016		$	217,584		$	202,065
Increase related to prior year tax positions			7,374			1,161			16,098
Decrease related to prior year tax positions			(2,525)			(918)			(5,442)
Increase related to current year tax positions			2,171			4,552			5,701
Lapse of statute of limitations			(65,417)			(62,363)			(838)
Unrecognized tax benefits at end of year			$	101,619		$	160,016		$	217,584

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