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Revenue Recognition - Narrative (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 USD ($) course term | Dec. 31, 2023 USD ($)
Graduation Fund [Line Items] |  |
Number of free courses | course | 1 |
Number of successfully completed courses | course | 3 |
Consecutive terms of non attendance in which graduation fund credits will be lost | term | 1 |
Graduation Fund | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 |  |
Graduation Fund [Line Items] |  |
Revenue performance obligation expected period of recognition | 12 months |
Revenue remaining performance obligation | $ 15.9 |
Undergraduate Degree Programs |  |
Graduation Fund [Line Items] |  |
Graduation fund liability | 35.3 | $ 40.6
Tuition Cap |  |
Graduation Fund [Line Items] |  |
Contract liabilities, tuition cap | $ 14.7 | $ 11.8
Tuition Cap | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 |  |
Graduation Fund [Line Items] |  |
Revenue performance obligation expected period of recognition | 12 months |
Revenue remaining performance obligation | $ 5.3 |
Minimum | Graduation Fund | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 |  |
Graduation Fund [Line Items] |  |
Revenue performance obligation expected period of recognition | 2 years |
Minimum | Australia / New Zealand |  |
Graduation Fund [Line Items] |  |
Deferred contract costs, amortization period | 1 year |
Maximum | Graduation Fund | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 |  |
Graduation Fund [Line Items] |  |
Revenue performance obligation expected period of recognition | 4 years |
Maximum | Australia / New Zealand |  |
Graduation Fund [Line Items] |  |
Deferred contract costs, amortization period | 2 years |

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- Definition Amortization period of cost capitalized in obtaining or fulfilling contract with customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -SubTopic 40 -Topic 340 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479483/340-40-50-2 + Details
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