Goodwill and Intangible Assets (Changes in Carrying Amount of Goodwill, by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Jun. 30, 2022	Sep. 30, 2022
Goodwill [Line Items]
Goodwill beginning balance	$ 310,210	$ 952,764
Purchase Accounting Adjustments		8,498
Acquisitions	642,554
Goodwill ending balance	952,764	961,262
Goodwill balance	952,764	961,262	$ 961,262
Chamberlain
Goodwill [Line Items]
Goodwill beginning balance	4,716	4,716
Purchase Accounting Adjustments		0
Acquisitions	0
Goodwill ending balance	4,716	4,716
Goodwill balance	4,716	4,716	4,716
Walden University
Goodwill [Line Items]
Goodwill beginning balance	0	642,554
Purchase Accounting Adjustments		8,498
Acquisitions	642,554
Goodwill ending balance	642,554	651,052
Goodwill balance	642,554	651,052	651,052
Medical and Veterinary
Goodwill [Line Items]
Goodwill beginning balance	305,494	305,494
Purchase Accounting Adjustments		0
Acquisitions	0
Goodwill ending balance	305,494	305,494
Goodwill balance	$ 305,494	$ 305,494	$ 305,494

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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