Subsequent Events (Details)	3 Months Ended	9 Months Ended
Sep. 30, 2021 USD ($) state student campus	Sep. 30, 2020 student
Subsequent Event [Line Items]
Number of students \| student		88,300
Forecast \| Secured Debt \| Senior Secured Term Loan Facility \| Medium-term Notes
Subsequent Event [Line Items]
Principal amount	$ 175,000,000
Forecast \| Revolving Credit Facility \| Senior Secured Revolving Loan Facility \| Line of Credit
Subsequent Event [Line Items]
Principal amount	$ 20,000,000
Forecast \| Rasmussen University
Subsequent Event [Line Items]
Number of students \| student	18,000
Number of campuses \| campus	24
Number of states \| state	6
Cash consideration	$ 300,000,000
Consideration of shares	29,000,000
Forecast \| Rasmussen University \| Maximum
Subsequent Event [Line Items]
Additional cash consideration	29,000,000
Expected consideration	$ 175,000,000

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