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Property and Equipment and Software and Content Development Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Depreciation	$ 12.8	$ 13.0	$ 14.1
Impairment charges against certain property and equipment assets		1.1
Capitalized software development costs, impairments	22.6		2.3
Software and content development costs, amortization	$ 48.3	$ 42.8	$ 36.8
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration]			General and administrative

X

- Definition

Amount of expense for amortization of capitalized computer software costs.

+ References

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-Topic 985
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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Amount of impairment loss from capitalized computer software costs.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

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Indicates line item in statement of income or comprehensive income that includes impairment of long-lived asset held for use.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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