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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

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 55 -Paragraph 24 -URI https://asc.fasb.org/extlink&oid=122137925&loc=d3e14258-109268 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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- Definition 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 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 55 -Paragraph 24 -URI https://asc.fasb.org/extlink&oid=122137925&loc=d3e14258-109268 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI https://asc.fasb.org/extlink&oid=123586518&loc=d3e961-128460 + Details
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