Business and Geographic Segment Information - Additional Information (Details)	5 Months Ended	6 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2017 segment state licensed_institution	Jun. 30, 2017 segment	Jul. 31, 2017 segment	Dec. 31, 2017 segment campus state licensed_institution educational_institution
Segment Reporting Information [Line Items]
Number of operating segments (segment) | segment	6		3	6
Number of additional operating segments created (segment) | segment		3
Brazil
Segment Reporting Information [Line Items]
Number of postsecondary educational institutions (educational institution) | educational_institution				13
Number of states in which entity operates (state) | state	8			8
Mexico
Segment Reporting Information [Line Items]
Number of postsecondary educational institutions (educational institution) | educational_institution				2
Number of campuses of postsecondary educational institutions (campus) | campus				40
Saudi Arabia
Segment Reporting Information [Line Items]
Number of licensed institutions managed through joint venture arrangements (licensed institution) | licensed_institution	9			9
China
Segment Reporting Information [Line Items]
Number of licensed institutions managed through joint venture arrangements (licensed institution) | licensed_institution	1			1