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	Sep. 30, 2020	Jun. 30, 2021
Goodwill [Line Items]
Goodwill beginning balance	$ 686,374	$ 686,214	$ 686,480
Acquisitions	642,554
Foreign exchange rate changes		266	(106)
Goodwill ending balance	1,328,928	686,480	686,374
Chamberlain University Segment [Member]
Goodwill [Line Items]
Goodwill beginning balance	4,716	4,716	4,716
Goodwill ending balance	4,716	4,716	4,716
Walden University
Goodwill [Line Items]
Acquisitions	642,554
Goodwill ending balance	642,554
Medical and Veterinary [Member]
Goodwill [Line Items]
Goodwill beginning balance	305,494	305,494	305,494
Goodwill ending balance	305,494	305,494	305,494
Financial Service [Member]
Goodwill [Line Items]
Goodwill beginning balance	376,164	376,004	376,270
Foreign exchange rate changes		266	(106)
Goodwill ending balance	$ 376,164	$ 376,270	$ 376,164

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
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Publisher FASB
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-Topic 350
-SubTopic 20
-Section 50
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
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