Contingencies (Details) (USD $)	12 Months Ended	0 Months Ended	12 Months Ended		1 Months Ended	0 Months Ended	1 Months Ended
	Dec. 31, 2014 claim	Jul. 22, 2011	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2014	Dec. 23, 2014	Oct. 31, 2014 allegations	Feb. 13, 2013 allegations	Aug. 17, 2011 Complaint claim
Loss Contingencies [Line Items]
Number of existing legal claims or proceedings that are likely to have a material effect on the Company's business	0
Percentage Of Receipts From Title IV Programs	90.00%
Portion of regulations under 90/10 rule	a KHE school would lose its eligibility to participate in Title IV programs for a period of at least two fiscal years if the institution derives more than 90% of its receipts from Title IV programs, as calculated on a cash basis in accordance with the Higher Education Act and applicable ED regulations, in each of two consecutive fiscal years. An institution with Title IV receipts exceeding 90% for a single fiscal year would be placed on provisional certification and may be subject to other enforcement measures.
Jajdelski case [Member]
Loss Contingencies [Line Items]
Number of allegations not dismissed								1
KHE's Broomall, PA location [Member]
Loss Contingencies [Line Items]
Amount payable under agreement		$ 1,600,000
Higher Education [Member]
Loss Contingencies [Line Items]
Number of schools combined into groups for determining Title IV compliance	two or more
Amount of OPEID numbers	25
Education division revenue derived from financial aid received by students under Title IV programs	806,000,000		819,000,000	882,000,000
Estimated campus OPEID units over 90/10 ratio	3
Percentage of revenue of campus OPEID units over 90/10 ratio	2.60%
Kaplan University [Member]
Loss Contingencies [Line Items]
Percentage of Title IV revenue received from largest OPEID reporting unit	73.00%
Kaplan University [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Percentage of receipts derived from Title IV	81.00%		81.00%
Other OPEID units [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Percentage of receipts derived from Title IV	65.00%		69.00%
Other OPEID units [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Percentage of receipts derived from Title IV	91.00%		89.00%
Education [Member] | AVC related to the FL AG investigation [Member]
Loss Contingencies [Line Items]
Investigation costs					200,000
Minimum amount of Kaplan Commitment savings to lift condition					350,000
Education [Member] | Urquilla-Diaz And Jajdelski Case [Member]
Loss Contingencies [Line Items]
Number of unsealed cases filed by former employees under the U.S. Federal False Claims Act	2
Education [Member] | Diaz Case [Member]
Loss Contingencies [Line Items]
The number of separate complaints included in the Diaz case that received rulings									3
Remaining employment claim in the Diaz complaint									1
Education [Member] | Coleman case [Member]
Loss Contingencies [Line Items]
Amount payable under agreement						1,300,000
Education [Member] | Coleman case [Member] | Refunds to students [Member]
Loss Contingencies [Line Items]
Amount payable under agreement						$ 1,100,000
Number of former students refunded						289
Higher Education [Member] | Charlestown And Kenmore Square Campuses [Member]
Loss Contingencies [Line Items]
Number Of Allegations Communicated							12
Higher Education [Member] | Title IV participating institutions including Broomall, PA and Pittsburgh, PA [Member]
Loss Contingencies [Line Items]
Number of pending ED program reviews	4