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Minimum Term of Contract

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- Definition

Percentage of Refundable Amounts Included Within Contract Liabilities.

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Percentage of Revenue Recognized During Period from Contract with Customer, Excluding Assessed Tax

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Revenue Remaining Performance Obligation Percentage of Revenue Expected to be Recognized Over Next 12 Months

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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- Definition

Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable.

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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 from Contracts with Customers (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Disaggregation of Revenue [Line Items]
Percentage of Refundable Amounts Included Within Contract Liabilities	17.00%		19.00%
Deferred Revenue	$ 408,272		$ 397,435
Deferred Revenue Recognized in Period Related to Beginning Balance	206,000
Deferred Revenue Recognized of Refundable Prepaid Amounts	$ 27,500
Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Percentage of Revenue	54.00%	54.00%
Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Percentage of Revenue	46.00%	46.00%
U.S. [Member]
Disaggregation of Revenue [Line Items]
Percentage of Revenue	78.00%	78.00%
Non-US [Member]
Disaggregation of Revenue [Line Items]
Percentage of Revenue	22.00%	22.00%
Kaplan International [Member]
Disaggregation of Revenue [Line Items]
Contract Asset, Total	$ 36,100		36,600
Contract Asset, Current	3,800		1,900
Contract Asset, Noncurrent	$ 32,300		34,700
Supplemental Education [Member] \| Long-term Contract with Customer [Member]
Disaggregation of Revenue [Line Items]
Minimum Term of Contract	12 months
Revenue Remaining Performance Obligation Percentage of Revenue Expected to be Recognized Over Next 12 Months	67.00%
Additional Contract Assets
Disaggregation of Revenue [Line Items]
Contract Asset, Current	$ 2,700		$ 3,100