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Fair Value of Financial Assets and Liabilities - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Business Combinations contingent liabilities undiscounted maximum payment	$ 24.4
Fair Value, Inputs, Level 3 [Member]
Business combination contingent consideration fair value disclosure	24.4	$ 39.8
Cash And Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents fair value disclosure	$ 618.3	$ 440.1

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- Definition

Business Combinations contingent liabilities undiscounted maximum payment

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- Definition

Contingent consideration Fair Value Disclosure.

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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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