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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- Definition

Indicates (true false) whether optional exemption was applied not to disclose amount of transaction price allocated to and explanation of expected timing of revenue recognition for remaining performance obligation, when contract has expected duration of one year or less or right to consideration corresponds directly to performance completed.

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REVENUE RECOGNITION (Details) - USD ($) $ in Millions	12 Months Ended
REVENUE RECOGNITION (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Disaggregation of Revenue [Line Items]
Deferred revenues and income	$ 465.5	$ 432.4
Performance obligations	true
Gift Cards and Exchange Tickets
Disaggregation of Revenue [Line Items]
Deferred revenues and income	$ 341.8
Loyalty Programs
Disaggregation of Revenue [Line Items]
Deferred revenues and income	$ 94.4
Minimum \| Gift Cards and Exchange Tickets
Disaggregation of Revenue [Line Items]
Redemption period	1 month
Maximum \| Gift Cards and Exchange Tickets
Disaggregation of Revenue [Line Items]
Redemption period	36 months
Exhibitor Services Agreement
Disaggregation of Revenue [Line Items]
Total	$ 459.1
Exhibitor Services Agreement \| Year ended 2026
Disaggregation of Revenue [Line Items]
Total	6.5
Exhibitor Services Agreement \| Year ended 2027
Disaggregation of Revenue [Line Items]
Total	7.6
Exhibitor Services Agreement \| Year ended 2028
Disaggregation of Revenue [Line Items]
Total	8.9
Exhibitor Services Agreement \| Year ended 2029
Disaggregation of Revenue [Line Items]
Total	10.5
Exhibitor Services Agreement \| Year ended 2030
Disaggregation of Revenue [Line Items]
Total	12.3
Exhibitor Services Agreement \| Years ended 2031 through February 2042
Disaggregation of Revenue [Line Items]
Total	$ 413.3