Segment Information - Reconciliation of Reportable Segment Revenues, Other Income and Adjusted EBITDA to Net Income (Parenthetical) (Detail) - USD ($) $ in Millions		12 Months Ended
Aug. 03, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Insurance litigation settlement proceeds relating to event cancellation		$ 1.5	$ 2.8
Remeasurement of contingent consideration		1.2	2.3	$ 33.3
Acquisition-related integration		8.3	6.1
Severance expense		3.7	1.5
Acquisition-related transaction costs		3.4	2.6	3.6
Non-recurring legal, audit and consulting fees		$ 3.0	$ 4.1	1.7
Restructuring-related transition costs,				6.1
Non-cash lease abandonment charges				3.0
Insurance settlement related expenses				$ 7.9
COVID-19 [Member]
Segment Reporting Information [Line Items]
Insurance litigation settlement proceeds relating to event cancellation	$ 148.6

Insurance settlement related expenses.

No definition available.

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Period Type:	duration

- Definition

Non cash lease abandonment charges.

+ References

No definition available.

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- Definition

Non recurring legal audit and consulting fees.

+ References

No definition available.

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479405/805-10-25-23

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- Definition

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479581/805-30-50-4

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- Definition

Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

+ References

No definition available.

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- Definition

Amount of cash inflow for proceeds from settlement of insurance claim, classified as operating activities. Excludes insurance settlement classified as investing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 16
-Subparagraph (c)
-SubTopic 10
-Topic 230
-Publisher FASB
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-Name Accounting Standards Codification
-Section 45
-Paragraph 21B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-21B

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- Definition

Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

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- Definition

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.

+ References

No definition available.

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- Definition

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References

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- Details

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