GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION Income statement (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]
Net revenues	$ 140,149	$ 130,988	$ 496,256	$ 437,214
Cost of revenues	113,982	133,841	377,711	408,244
Selling, general and administrative expenses	34,465	36,888	110,294	103,467
Restructuring costs	342	4,192	8,628	8,890
Operating Income (Loss)	(8,640)	(43,933)	(377)	(83,387)
Interest income	59	166	354	579
Interest expense	(37,103)	(23,816)	(104,112)	(87,002)
Loss on extinguishment of debt (Note 5)	0	0	(24,161)	(23,115)
Foreign currency exchange (loss) / gain, net	(6,018)	43,711	(6,410)	8,906
Change in fair value of derivatives	0	0	2,311	104
Other income / (expense), net	22	(232)	(1,746)	(657)
Loss from continuing operations before tax and loss from investment in subsidiaries	(51,680)	(24,104)	(134,141)	(184,572)
(Provision) / credit for income taxes	(658)	2,296	(948)	13,609
Income / (loss) from continuing operations before income / (loss) from investment in subsidiaries	(52,338)	(21,808)	(135,089)	(170,963)
Loss from investment in subsidiaries	0	0	0	0
Loss from continuing operations before loss from investment in subsidiaries	(52,338)	(21,808)	(135,089)	(170,963)
Loss from discontinued operations, net of tax	(144)	(1,465)	18,532	2,361
Net loss	(52,482)	(23,273)	(153,621)	(173,324)
Net loss attributable to noncontrolling interests	344	182	1,130	995
Net loss attributable to CME Ltd.	(52,138)	(23,091)	(152,491)	(172,329)
Comprehensive loss attributable to CME Ltd.	(154,265)	(22,864)	(261,616)	(181,095)
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues	0	0	0	0
Cost of revenues	0	0	0	0
Selling, general and administrative expenses	3,757	14,702	12,713	25,361
Restructuring costs	0	742	0	742
Operating Income (Loss)	(3,757)	(15,444)	(12,713)	(26,103)
Interest income	33,114	32,121	106,842	100,210
Interest expense	(36,480)	(17,071)	(101,104)	(66,306)
Loss on extinguishment of debt (Note 5)	0		(24,161)	(23,115)
Foreign currency exchange (loss) / gain, net	3,799	36,176	4,761	15,520
Change in fair value of derivatives	0		2,311	0
Other income / (expense), net	0	0	0	0
Loss from continuing operations before tax and loss from investment in subsidiaries	(3,324)	35,782	(24,064)	206
(Provision) / credit for income taxes	0	0	0	0
Income / (loss) from continuing operations before income / (loss) from investment in subsidiaries	(3,324)	35,782	(24,064)	206
Loss from investment in subsidiaries	(150,941)	(58,646)	(237,552)	(181,301)
Loss from continuing operations before loss from investment in subsidiaries	154,265	22,864	261,616	181,095
Loss from discontinued operations, net of tax	0	0	0	0
Net loss	(154,265)	(22,864)	(261,616)	(181,095)
Net loss attributable to noncontrolling interests	0	0	0	0
Net loss attributable to CME Ltd.	(154,265)	(22,864)	(261,616)	(181,095)
Comprehensive loss attributable to CME Ltd.	(154,265)	(22,864)	(261,616)	(181,095)
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues	0	0	0	0
Cost of revenues	0	0	0	0
Selling, general and administrative expenses	608	1	1,135	2
Restructuring costs	0	24	0	24
Operating Income (Loss)	(608)	(25)	(1,135)	(26)
Interest income	6,800	741	20,905	1,555
Interest expense	(33,046)	(29,064)	(106,652)	(87,441)
Loss on extinguishment of debt (Note 5)	0		0	0
Foreign currency exchange (loss) / gain, net	(224)	956	(3,946)	1,592
Change in fair value of derivatives	(3,150)		(5,579)	0
Other income / (expense), net	0	0	0	0
Loss from continuing operations before tax and loss from investment in subsidiaries	(30,228)	(27,392)	(96,407)	(84,320)
(Provision) / credit for income taxes	2,398	2,416	10,327	7,990
Income / (loss) from continuing operations before income / (loss) from investment in subsidiaries	(27,830)	(24,976)	(86,080)	(76,330)
Loss from investment in subsidiaries	(2,381)	(1,295)	(30,929)	(72,985)
Loss from continuing operations before loss from investment in subsidiaries	30,211	26,271	117,009	149,315
Loss from discontinued operations, net of tax	0	0	0	0
Net loss	(30,211)	(26,271)	(117,009)	(149,315)
Net loss attributable to noncontrolling interests	0	0	0	0
Net loss attributable to CME Ltd.	(30,211)	(26,271)	(117,009)	(149,315)
Comprehensive loss attributable to CME Ltd.	(150,941)	(58,646)	(237,552)	(181,301)
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues	140,149	130,988	496,256	437,214
Cost of revenues	113,982	133,841	377,711	408,244
Selling, general and administrative expenses	30,100	22,185	96,446	78,104
Restructuring costs	342	3,426	8,628	8,124
Operating Income (Loss)	(4,275)	(28,464)	13,471	(57,258)
Interest income	56	159	337	552
Interest expense	(7,488)	(10,536)	(24,086)	(34,993)
Loss on extinguishment of debt (Note 5)	0		0	0
Foreign currency exchange (loss) / gain, net	(9,593)	6,579	(7,225)	(8,206)
Change in fair value of derivatives	3,150		5,579	104
Other income / (expense), net	22	(232)	(1,746)	(657)
Loss from continuing operations before tax and loss from investment in subsidiaries	(18,128)	(32,494)	(13,670)	(100,458)
(Provision) / credit for income taxes	(3,056)	(120)	(11,275)	5,619
Income / (loss) from continuing operations before income / (loss) from investment in subsidiaries	(21,184)	(32,614)	(24,945)	(94,839)
Loss from investment in subsidiaries	0	0	0	0
Loss from continuing operations before loss from investment in subsidiaries	21,184	32,614	24,945	94,839
Loss from discontinued operations, net of tax	(144)	(1,465)	18,532	2,361
Net loss	(21,328)	(34,079)	(43,477)	(97,200)
Net loss attributable to noncontrolling interests	344	182	1,130	995
Net loss attributable to CME Ltd.	(20,984)	(33,897)	(42,347)	(96,205)
Comprehensive loss attributable to CME Ltd.	(2,381)	(1,295)	(30,929)	(72,985)
Consolidation, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues	0	0	0	0
Cost of revenues	0	0	0	0
Selling, general and administrative expenses	0	0	0	0
Restructuring costs	0	0	0	0
Operating Income (Loss)	0	0	0	0
Interest income	(39,911)	(32,855)	(127,730)	(101,738)
Interest expense	39,911	32,855	127,730	101,738
Loss on extinguishment of debt (Note 5)	0		0	0
Foreign currency exchange (loss) / gain, net	0	0	0	0
Change in fair value of derivatives	0		0	0
Other income / (expense), net	0	0	0	0
Loss from continuing operations before tax and loss from investment in subsidiaries	0	0	0	0
(Provision) / credit for income taxes	0	0	0	0
Income / (loss) from continuing operations before income / (loss) from investment in subsidiaries	0	0	0	0
Loss from investment in subsidiaries	153,322	59,941	268,481	254,286
Loss from continuing operations before loss from investment in subsidiaries	(153,322)	(59,941)	(268,481)	(254,286)
Loss from discontinued operations, net of tax	0	0	0	0
Net loss	153,322	59,941	268,481	254,286
Net loss attributable to noncontrolling interests	0	0	0	0
Net loss attributable to CME Ltd.	153,322	59,941	268,481	254,286
Comprehensive loss attributable to CME Ltd.	$ 153,322	$ 59,941	$ 268,481	$ 254,286