Income Taxes - Jurisdictions the Company Remains Subject to Tax Examinations (Detail)	12 Months Ended
	Dec. 31, 2021
United States | Earliest Tax Year | Federal
Income Taxes [Line Items]
Tax Years	2018
United States | Earliest Tax Year | State
Income Taxes [Line Items]
Tax Years	2012
United States | Latest Tax Year | Federal
Income Taxes [Line Items]
Tax Years	2021
United States | Latest Tax Year | State
Income Taxes [Line Items]
Tax Years	2021
Ireland | Earliest Tax Year
Income Taxes [Line Items]
Tax Years	2017
Ireland | Latest Tax Year
Income Taxes [Line Items]
Tax Years	2021
United Kingdom | Earliest Tax Year
Income Taxes [Line Items]
Tax Years	2020
United Kingdom | Latest Tax Year
Income Taxes [Line Items]
Tax Years	2021