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v3.25.2

Revenue from Contracts with Customers (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024
Disaggregation of Revenue [Line Items] |  |  |  |  |
Percentage of Refundable Amounts Included Within Contract Liabilities | 27.00% |  | 27.00% |  | 19.00%
Deferred Revenue Recognized in Period Related to Beginning Balance |  |  | $ 300.9 |  |
Deferred Revenue Recognized of Refundable Prepaid Amounts |  |  | $ 45.0 |  |
U.S. [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Percentage of Revenue | 78.00% | 78.00% | 78.00% | 78.00% |
Non-US [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Percentage of Revenue | 22.00% | 22.00% | 22.00% | 22.00% |
Transferred over Time [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Percentage of Revenue | 54.00% | 54.00% | 54.00% | 54.00% |
Transferred at Point in Time [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Percentage of Revenue | 46.00% | 46.00% | 46.00% | 46.00% |
Kaplan International [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Contract Asset, Total | $ 36.9 |  | $ 36.9 |  | $ 36.6
Contract Asset, Current | 6.3 |  | 6.3 |  | 1.9
Contract Asset, Noncurrent | 30.6 |  | 30.6 |  | 34.7
Additional Contract Assets |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Contract Asset, Current | $ 3.1 |  | $ 3.1 |  | $ 3.1
Long-term Contract with Customer [Member] | Supplemental Education [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 | 72.00% |  | 72.00% |  |

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