Redemption period where loyalty program awards are recognized as revenue if not redeemed.

No definition available.

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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- Definition

Amount of revenue recognized arising from contract liability from change in timeframe for performance obligation to be satisfied.

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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.

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REVENUE RECOGNITION - Transaction price allocated to the remaining performance obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Deferred revenues and income	$ 432.4	$ 421.8
Gift Card And Ticket Exchange
Disaggregation of Revenue [Line Items]
Deferred revenues and income	$ 327.9
Redemption period	24 months
Loyalty Program
Disaggregation of Revenue [Line Items]
Deferred revenues and income	$ 79.3
Redemption period	24 months
Exhibitor Services Agreement
Disaggregation of Revenue [Line Items]
Expected to be recognized as revenue	$ 464.0
Exhibitor Services Agreement \| Year ended 2025
Disaggregation of Revenue [Line Items]
Expected to be recognized as revenue	24.4
Exhibitor Services Agreement \| Year Ended 2026
Disaggregation of Revenue [Line Items]
Expected to be recognized as revenue	26.2
Exhibitor Services Agreement \| Year Ended 2027
Disaggregation of Revenue [Line Items]
Expected to be recognized as revenue	28.2
Exhibitor Services Agreement \| Year Ended 2028
Disaggregation of Revenue [Line Items]
Expected to be recognized as revenue	30.4
Exhibitor Services Agreement \| Year Ended 2029
Disaggregation of Revenue [Line Items]
Expected to be recognized as revenue	32.8
Exhibitor Services Agreement \| Years ended 2030 through February 2037
Disaggregation of Revenue [Line Items]
Expected to be recognized as revenue	$ 322.0