Nature of Operations	12 Months Ended
Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations	Nature of OperationsStrategic Education, Inc. (“Strategic Education” or the “Company”), a Maryland corporation formerly known as Strayer Education, Inc., is a leader in education innovation, dedicated to enabling economic mobility for working adults through education. As discussed in Note 2 and Note 3, the Company completed its merger with Capella Education Company (“CEC”) on August 1, 2018 and completed its acquisition of Torrens University and related assets in Australia and New Zealand ("ANZ”) on November 3, 2020. During 2020, the Company revised its reportable segments, as discussed further in Note 20. Prior period segment disclosures have been restated to conform to the current period presentation. The accompanying consolidated financial statements and footnotes include the results of the Company’s three reportable segments: Strayer University, Capella University, and Australia/New Zealand.

The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-URI http://asc.fasb.org/topic&trid=2134479

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