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Business Combinations and Asset Acquisitions - Summary of Preliminary Allocation of Purchase Price (Parenthetical) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)
Business Acquisition [Line Items]
Amount of Goodwill is deductible for tax purposes	$ 22.9
Amount of tax-deductible goodwill may increase in the future,dependent on contingent consideration milestones being achieved	$ 52.1
2021 Acquisitions | Maximum [Member]
Business Acquisition [Line Items]
Acquired intangible assets useful life	9 years
2021 Acquisitions | Minimum [Member]
Business Acquisition [Line Items]
Acquired intangible assets useful life	2 years
2020 Acquisitions | Maximum [Member]
Business Acquisition [Line Items]
Acquired intangible assets useful life	6 years
2020 Acquisitions | Minimum [Member]
Business Acquisition [Line Items]
Acquired intangible assets useful life	3 years
2019 Acquisitions | Maximum [Member]
Business Acquisition [Line Items]
Acquired intangible assets useful life	9 years
2019 Acquisitions | Minimum [Member]
Business Acquisition [Line Items]
Acquired intangible assets useful life	2 years

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

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