QUARTERLY FINANCIAL DATA (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Data [Abstract]
Net revenues	$ 195,552	$ 117,322	$ 166,834	$ 126,133	$ 216,196	$ 131,081	$ 192,811	$ 140,705	$ 605,841	$ 680,793	$ 633,134
Cost of revenues	116,654	85,832	101,229	98,828	138,125	105,823	125,514	119,579	402,543	489,041	578,570
Operating (loss) / income	46,528	28,853	36,441	(17,239)	38,298	(8,023)	22,687	(14,682)	94,583	38,280	(180,017)
Net loss	1,137	(21,510)	(11,669)	(70,243)	(17,805)	(51,308)	(41,352)	(41,000)	(102,285)	(151,465)	(276,434)
Loss from discontinued operations, net of tax (Note 3)	(12,418)	(265)	2,684	(3,288)	(60,470)	(1,174)	(11,154)	(7,633)	(13,287)	(80,431)	(5,099)
Net loss	(11,281)	(21,775)	(8,985)	(73,531)	(78,275)	(52,482)	(52,506)	(48,633)	(115,572)	(231,896)	(281,533)
Net loss attributable to CME Ltd.	$ (11,427)	$ (21,522)	$ (8,678)	$ (73,274)	$ (74,937)	$ (52,138)	$ (52,437)	$ (47,916)	$ (114,901)	$ (227,428)	$ (277,651)
Net loss per share:
Basic EPS (in dollars per share)	$ (0.11)	$ (0.18)	$ (0.09)	$ (0.53)	$ (0.54)	$ (0.38)	$ (0.39)	$ (0.35)	$ (0.90)	$ (1.66)	$ (2.27)
Effect of dilutive securities (in dollars per share)	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Diluted (in dollars per share)	$ (0.11)	$ (0.18)	$ (0.09)	$ (0.53)	$ (0.54)	$ (0.38)	$ (0.39)	$ (0.35)	$ (0.90)	$ (1.66)	$ (2.27)