Debt (Additional Information) (Details) - USD ($)										1 Months Ended	3 Months Ended
	Sep. 22, 2022	Apr. 11, 2022	Mar. 11, 2022	Aug. 12, 2021	Jul. 29, 2021	Mar. 01, 2021	Feb. 12, 2021	Mar. 24, 2020	Apr. 13, 2018	Jun. 30, 2022	Mar. 31, 2024	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Mar. 31, 2021	Dec. 31, 2016
Line of Credit Facility [Line Items]
Repayment of long-term debt												$ 100,861,000				$ 291,000,000
Gain on extinguishment of debt												71,000				0
Line of Credit facility, initiation date									Apr. 13, 2018
Debt Issuance Costs Write-off												2,895,000
Interest Rate Swap
Line of Credit Facility [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax												0				(4,525,000)
Interest Rate Swap | Interest Expense.
Line of Credit Facility [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax					$ (4,500,000)
Revolver
Line of Credit Facility [Line Items]
Maximum borrowing capacity				$ 400,000,000.0
Term																	5 years
Debt Issuance Costs Write-off												$ 0
Revolver | LIBOR Floor
Line of Credit Facility [Line Items]
Basic spread rate												0.75%
Revolver | LIBOR Floor | Minimum
Line of Credit Facility [Line Items]
Basic spread rate												3.75%
Revolver | LIBOR Floor | Maximum
Line of Credit Facility [Line Items]
Basic spread rate												4.25%
Revolver | Alternate Base Rate | Minimum
Line of Credit Facility [Line Items]
Basic spread rate												2.75%
Revolver | Alternate Base Rate | Maximum
Line of Credit Facility [Line Items]
Basic spread rate												3.25%
Walden Title IV Letter Of Credit
Line of Credit Facility [Line Items]
Letters of credit outstanding												$ 84,000,000.0
Commitment fee percentage												0.25%
Undrawn amount on letters of credit												$ 400,000,000.0
De Vry University Title IV Letter Of Credit
Line of Credit Facility [Line Items]
Letters of credit outstanding												$ 0				68,400,000		$ 68,400,000
Letter Of Credit Title Iv Disbursement Percentage																		10.00%
Letter of credit, repayment period																		5 years
Credit annual fee percentage reimbursement												2.00%
Prior Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity									$ 300,000,000.0
Line of credit facility, expiration date									Apr. 13, 2023
Debt Issuance Costs Write-off												$ 0				6,000,000
Prior Revolving Credit Facility | Interest Expense.
Line of Credit Facility [Line Items]
Debt Issuance Costs Write-off												$ 6,000,000.0
Prior Revolving Credit Facility | Base Rate | Minimum
Line of Credit Facility [Line Items]
Application rate, percentage																	0.75%
Prior Revolving Credit Facility | Base Rate | Maximum
Line of Credit Facility [Line Items]
Application rate, percentage																	1.75%
Prior Revolving Credit Facility | Eurocurrency Rate | Minimum
Line of Credit Facility [Line Items]
Application rate, percentage												1.75%
Prior Revolving Credit Facility | Eurocurrency Rate | Maximum
Line of Credit Facility [Line Items]
Application rate, percentage												2.75%
Term Loan B
Line of Credit Facility [Line Items]
Debt instrument, face amount							$ 850,000,000.0
Repayment of long-term debt	$ 100,000,000.0		$ 396,700,000									$ 100,000,000.0
Debt Instrument, Issuance Price, Percent Of Principal Amount				99.00%
Debt Instrument, Issuance Discount, Percent				1.00%
Debt Issuance Costs Write-off												$ 2,900,000
Asset sale or disposition period												1 year
Asset sale or disposition investments												$ 20,000,000.0
Mandatory prepayment terms												0
Bridge
Line of Credit Facility [Line Items]
Debt Issuance Costs Write-off												0				10,329,000
Bridge | Interest Expense.
Line of Credit Facility [Line Items]
Debt Issuance Costs Write-off												$ 10,300,000
Senior Secured Notes Due 2028 And Term B Loan
Line of Credit Facility [Line Items]
Term																	7 years
Cap percentage												20.00%
Senior Secured Notes Due 2028 And Term B Loan | Scenario, Plan
Line of Credit Facility [Line Items]
Total net leverage ratio											3.25%				4.00%
Senior Secured Notes Due 2028
Line of Credit Facility [Line Items]
Debt instrument, face amount						$ 800,000,000.0
Fixed interest rate						5.50%
Repayment of long-term debt		$ 373,300,000								$ 20,800,000		$ 900,000	$ 394,100,000
Gain on extinguishment of debt												$ 100,000
Percentage of notes issued on par value						100.00%
Redemption price, percentage of principal amount redeemed		100.00%				100.00%				90.00%		92.00%
Debt covenant, percentage of principal amount of notes outstanding						25.00%
Debt Issuance Costs Write-off												$ 15,000				0
Senior Secured Notes Due 2028 | Accrued Liabilities
Line of Credit Facility [Line Items]
Debt Instrument, Accrued Interest										$ 7,400,000		$ 1,900,000	$ 7,400,000			3,700,000
Senior Secured Notes Due 2028 | 2024
Line of Credit Facility [Line Items]
Redemption price, percentage of principal amount redeemed						102.75%
Senior Secured Notes Due 2028 | 2025
Line of Credit Facility [Line Items]
Redemption price, percentage of principal amount redeemed						101.375%
Senior Secured Notes Due 2028 | 2026
Line of Credit Facility [Line Items]
Redemption price, percentage of principal amount redeemed						100.00%
Senior Secured Notes Due 2028 | Prior to March 1,2024
Line of Credit Facility [Line Items]
Redemption price percentage						105.50%
Senior Secured Notes Due 2028 | Maximum | Prior to March 1,2024
Line of Credit Facility [Line Items]
Redemption price, percentage of principal amount redeemed						40.00%
Term B Loan
Line of Credit Facility [Line Items]
Debt instrument, face amount				$ 850,000,000.0
Fixed interest rate												7.05%
Repayment of long-term debt	$ 100,000,000.0			$ 396,700,000
Debt Instrument, Ticking Fee, Term							30 days
Debt Instrument, Ticking Fee, Percent							50.00%
Basic spread rate							4.50%
Principal payment														$ 2,125,000
Debt Issuance Costs Write-off												$ 2,880,000				$ 0
Term B Loan | LIBOR Floor
Line of Credit Facility [Line Items]
Basic spread rate				0.75%			0.75%
Term B Loan | Alternate Base Rate | Minimum
Line of Credit Facility [Line Items]
Basic spread rate				3.00%
Term B Loan | Alternate Base Rate | Maximum
Line of Credit Facility [Line Items]
Basic spread rate				3.50%
Term B Loan | LIBOR
Line of Credit Facility [Line Items]
Basic spread rate							4.50%
Term B Loan | Eurocurrency Rate | Minimum
Line of Credit Facility [Line Items]
Basic spread rate				4.00%
Term B Loan | Eurocurrency Rate | Maximum
Line of Credit Facility [Line Items]
Basic spread rate				4.50%
Prior Term Loan B
Line of Credit Facility [Line Items]
Debt instrument, face amount									$ 300,000,000.0
Repayment of long-term debt				$ 291,000,000.0
Principal payment									$ 750,000
Debt instrument, maturity date									Apr. 13, 2025
Prior Term Loan B | Base Rate
Line of Credit Facility [Line Items]
Basic spread rate												2.00%
Debt instrument, description of variable rate basis												base rate plus 2%
Prior Term Loan B | Eurocurrency Rate
Line of Credit Facility [Line Items]
Basic spread rate								3.00%				3.00%
Debt instrument, description of variable rate basis												LIBOR-equivalent rate plus 3%
Prior Term Loan B | Interest Rate Swap
Line of Credit Facility [Line Items]
Derivative, Fixed Interest Rate								0.946%
Derivative, Swaption Interest Rate												3.946%
Prior Term Loan B | Interest Rate Swap | LIBOR
Line of Credit Facility [Line Items]
Debt instrument, description of variable rate basis								one-month LIBOR
Prior Term Loan B | Interest Rate Swap | LIBOR | Minimum
Line of Credit Facility [Line Items]
Derivative, Floor Interest Rate								0.00%