GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION Income statement (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Condensed Financial Statements, Captions [Line Items]
Net revenues	$ 204,870	$ 175,566	$ 356,107	$ 306,226
Cost of revenues	135,689	141,303	263,729	274,403
Selling, general and administrative expenses	43,688	34,161	75,829	66,579
Restructuring costs	2,920	4,698	8,286	4,698
Operating Income (Loss)	22,573	(4,596)	8,263	(39,454)
Interest income	149	180	295	413
Interest expense	(39,098)	(31,179)	(67,009)	(63,186)
Loss on extinguishment of debt (Note 5)	(24,161)	(23,115)	(24,161)	(23,115)
Foreign currency exchange gain / (loss), net	26	15,047	(392)	(34,805)
Change in fair value of derivatives	2,361	0	2,311	104
Other expense, net	(1,775)	(412)	(1,768)	(425)
Loss from continuing operations before tax and loss from investment in subsidiaries	(39,925)	(44,075)	(82,461)	(160,468)
(Provision) / credit for income taxes	(2,487)	3,332	(290)	11,313
income / (loss) from continuing operations before income / (loss) from investment in subsidiaries	(42,412)	(40,743)	(82,751)	(149,155)
Loss from investment in subsidiaries	0	0	0	0
Loss from continuing operations before loss from investment in subsidiaries	(42,412)	(40,743)	(82,751)	(149,155)
Loss from discontinued operations, net of tax	(10,095)	(350)	18,388	896
Net loss	(52,507)	(41,093)	(101,139)	(150,051)
Net loss attributable to noncontrolling interests	69	131	786	813
Net loss attributable to CME Ltd.	(52,438)	(40,962)	(100,353)	(149,238)
Comprehensive loss attributable to CME Ltd.	(60,810)	(52,275)	(107,351)	(158,231)
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	5,289	6,114	8,956	9,488
Restructuring costs	0	0	0	0
Operating Income (Loss)	(5,289)	(6,114)	(8,956)	(9,488)
Interest income	34,537	31,749	73,728	68,089
Interest expense	(38,217)	(24,645)	(64,624)	(49,235)
Loss on extinguishment of debt (Note 5)	(24,161)	(23,115)	(24,161)	(23,115)
Foreign currency exchange gain / (loss), net	784	17,186	962	(20,656)
Change in fair value of derivatives	2,361		2,311	0
Other expense, net	0	0	0	0
Loss from continuing operations before tax and loss from investment in subsidiaries	(29,985)	(4,939)	(20,740)	(34,405)
(Provision) / credit for income taxes	0	0	0	0
income / (loss) from continuing operations before income / (loss) from investment in subsidiaries	(29,985)	(4,939)	(20,740)	(34,405)
Loss from investment in subsidiaries	(30,825)	(47,333)	(86,611)	(123,826)
Loss from continuing operations before loss from investment in subsidiaries	60,810	52,272	107,351	158,231
Loss from discontinued operations, net of tax	0	0	0	0
Net loss	(60,810)	(52,272)	(107,351)	(158,231)
Net loss attributable to noncontrolling interests	0	0	0	0
Net loss attributable to CME Ltd.	(60,810)	(52,272)	(107,351)	(158,231)
Comprehensive loss attributable to CME Ltd.	(60,810)	(52,272)	(107,351)	(158,231)
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	275	980	527	1,172
Restructuring costs	0	0	0	0
Operating Income (Loss)	(275)	(980)	(527)	(1,172)
Interest income	7,058	799	14,105	814
Interest expense	(34,476)	(28,274)	(73,606)	(58,377)
Loss on extinguishment of debt (Note 5)	0	0	0	0
Foreign currency exchange gain / (loss), net	(2,822)	1,218	(3,722)	636
Change in fair value of derivatives	418		(2,429)	0
Other expense, net	0	38	0	0
Loss from continuing operations before tax and loss from investment in subsidiaries	(30,097)	(27,199)	(66,179)	(58,099)
(Provision) / credit for income taxes	4,326	1,797	7,929	5,574
income / (loss) from continuing operations before income / (loss) from investment in subsidiaries	(25,771)	(25,402)	(58,250)	(52,525)
Loss from investment in subsidiaries	(5,054)	(21,934)	(28,548)	(71,690)
Loss from continuing operations before loss from investment in subsidiaries	30,825	47,336	86,798	124,215
Loss from discontinued operations, net of tax	0	0	0	0
Net loss	(30,825)	(47,336)	(86,798)	(124,215)
Net loss attributable to noncontrolling interests	0	0	0	0
Net loss attributable to CME Ltd.	(30,825)	(47,336)	(86,798)	(124,215)
Comprehensive loss attributable to CME Ltd.	(30,825)	(47,336)	(86,611)	(123,826)
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues	204,870	175,566	356,107	306,226
Cost of revenues	135,689	141,303	263,729	274,403
Selling, general and administrative expenses	38,124	27,067	66,346	55,919
Restructuring costs	2,920	4,698	8,286	4,698
Operating Income (Loss)	28,137	2,498	17,746	(28,794)
Interest income	145	178	281	393
Interest expense	(7,996)	(10,806)	(16,598)	(24,457)
Loss on extinguishment of debt (Note 5)	0	0	0	0
Foreign currency exchange gain / (loss), net	2,064	(3,357)	2,368	(14,785)
Change in fair value of derivatives	(418)		2,429	104
Other expense, net	(1,775)	(450)	(1,768)	(425)
Loss from continuing operations before tax and loss from investment in subsidiaries	20,157	(11,937)	4,458	(67,964)
(Provision) / credit for income taxes	(6,813)	1,535	(8,219)	5,739
income / (loss) from continuing operations before income / (loss) from investment in subsidiaries	13,344	(10,402)	(3,761)	(62,225)
Loss from investment in subsidiaries	0	0	0	0
Loss from continuing operations before loss from investment in subsidiaries	(13,344)	10,402	3,761	62,225
Loss from discontinued operations, net of tax	(10,095)	(350)	18,388	896
Net loss	3,249	(10,752)	(22,149)	(63,121)
Net loss attributable to noncontrolling interests	69	131	786	813
Net loss attributable to CME Ltd.	3,318	(10,621)	(21,363)	(62,308)
Comprehensive loss attributable to CME Ltd.	(5,054)	(21,934)	(28,548)	(71,690)
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	(41,591)	(32,546)	(87,819)	(68,883)
Interest expense	41,591	32,546	87,819	68,883
Loss on extinguishment of debt (Note 5)	0	0	0	0
Foreign currency exchange gain / (loss), net	0	0	0	0
Change in fair value of derivatives	0		0	0
Other 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	35,879	69,267	115,159	195,516
Loss from continuing operations before loss from investment in subsidiaries	(35,879)	(69,267)	(115,159)	(195,516)
Loss from discontinued operations, net of tax	0	0	0	0
Net loss	35,879	69,267	115,159	195,516
Net loss attributable to noncontrolling interests	0	0	0	0
Net loss attributable to CME Ltd.	35,879	69,267	115,159	195,516
Comprehensive loss attributable to CME Ltd.	$ 35,879	$ 69,267	$ 115,159	$ 195,516