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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Income Tax Examination [Line Items]
Unrecognized tax benefits	$ 12.2	$ 12.2
Income tax interest and penalty expense	9.2	9.2
Accrued interest related to uncertain tax positions	$ 3.3	$ 3.3
U.S. Federal [Member]
Income Tax Examination [Line Items]
Open tax year	2008
U.S. State and Local [Member]
Income Tax Examination [Line Items]
Open tax year	2009
Non-U.S [Member]
Income Tax Examination [Line Items]
Open tax year	2012

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Tax year that remains open to examination under enacted tax laws, in CCYY format.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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Amount of unrecognized tax benefits.

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Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of interest expense accrued for an underpayment of income taxes.

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