GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION Income statement (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Net revenues	$ 153,050	$ 132,715
Cost of revenues	129,274	134,735
Selling, general and administrative expenses	32,804	33,065
Restructuring costs (Note 15)	5,366	0
Operating Income (Loss)	(14,394)	(35,085)
Interest income	146	235
Interest expense	(27,921)	(32,013)
Foreign currency exchange loss, net	(460)	(49,882)
Change in fair value of derivatives	(50)	104
Other income / (expense), net	0	(16)
Loss from continuing operations before tax and loss from investment in subsidiaries	(42,679)	(116,657)
Credit for income taxes	2,110	7,618
income / (loss) from continuing operations before income / (loss) from investment in subsidiaries	(40,569)	(109,039)
Loss from investment in subsidiaries	0	0
Loss from continuing operations before loss from investment in subsidiaries	(40,569)	(109,039)
Loss from discontinued operations, net of tax	8,064	(77)
Net loss	(48,633)	(108,962)
Net loss attributable to noncontrolling interests	717	682
Net loss attributable to CME Ltd.	(47,916)	(108,280)
Comprehensive loss attributable to CME Ltd.	(46,541)	(105,960)
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues	0	0
Cost of revenues	0	0
Selling, general and administrative expenses	3,667	3,374
Restructuring costs (Note 15)	0
Operating Income (Loss)	(3,667)	(3,374)
Interest income	39,191	36,340
Interest expense	(26,407)	(24,590)
Foreign currency exchange loss, net	178	(37,842)
Change in fair value of derivatives	(50)	0
Other income / (expense), net		0
Loss from continuing operations before tax and loss from investment in subsidiaries	9,245	(29,466)
Credit for income taxes	0	0
income / (loss) from continuing operations before income / (loss) from investment in subsidiaries	9,245	(29,466)
Loss from investment in subsidiaries	(55,786)	(76,494)
Loss from continuing operations before loss from investment in subsidiaries	46,541	105,960
Loss from discontinued operations, net of tax	0	0
Net loss	(46,541)	(105,960)
Net loss attributable to noncontrolling interests	0	0
Net loss attributable to CME Ltd.	(46,541)	(105,960)
Comprehensive loss attributable to CME Ltd.	(46,541)	(105,960)
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues	0	0
Cost of revenues	0	0
Selling, general and administrative expenses	252	192
Restructuring costs (Note 15)	0
Operating Income (Loss)	(252)	(192)
Interest income	7,047	15
Interest expense	(39,130)	(30,106)
Foreign currency exchange loss, net	(892)	(582)
Change in fair value of derivatives	(2,855)	0
Other income / (expense), net		(38)
Loss from continuing operations before tax and loss from investment in subsidiaries	(36,082)	(30,903)
Credit for income taxes	3,603	3,777
income / (loss) from continuing operations before income / (loss) from investment in subsidiaries	(32,479)	(27,126)
Loss from investment in subsidiaries	(23,494)	(49,757)
Loss from continuing operations before loss from investment in subsidiaries	55,973	76,883
Loss from discontinued operations, net of tax	0	0
Net loss	(55,973)	(76,883)
Net loss attributable to noncontrolling interests	0	0
Net loss attributable to CME Ltd.	(55,973)	(76,883)
Comprehensive loss attributable to CME Ltd.	(55,786)	(76,494)
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues	153,050	132,715
Cost of revenues	129,274	134,735
Selling, general and administrative expenses	28,885	29,499
Restructuring costs (Note 15)	5,366
Operating Income (Loss)	(10,475)	(31,519)
Interest income	136	217
Interest expense	(8,612)	(13,654)
Foreign currency exchange loss, net	254	(11,458)
Change in fair value of derivatives	2,855	104
Other income / (expense), net		22
Loss from continuing operations before tax and loss from investment in subsidiaries	(15,842)	(56,288)
Credit for income taxes	(1,493)	3,841
income / (loss) from continuing operations before income / (loss) from investment in subsidiaries	(17,335)	(52,447)
Loss from investment in subsidiaries	0	0
Loss from continuing operations before loss from investment in subsidiaries	17,335	52,447
Loss from discontinued operations, net of tax	8,064	(77)
Net loss	(25,399)	(52,370)
Net loss attributable to noncontrolling interests	717	682
Net loss attributable to CME Ltd.	(24,682)	(51,688)
Comprehensive loss attributable to CME Ltd.	(23,494)	(49,757)
Consolidation, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues	0	0
Cost of revenues	0	0
Selling, general and administrative expenses	0	0
Restructuring costs (Note 15)	0
Operating Income (Loss)	0	0
Interest income	(46,228)	(36,337)
Interest expense	46,228	36,337
Foreign currency exchange loss, net	0	0
Change in fair value of derivatives	0	0
Other income / (expense), net		0
Loss from continuing operations before tax and loss from investment in subsidiaries	0	0
Credit for income taxes	0	0
income / (loss) from continuing operations before income / (loss) from investment in subsidiaries	0	0
Loss from investment in subsidiaries	79,280	126,251
Loss from continuing operations before loss from investment in subsidiaries	(79,280)	(126,251)
Loss from discontinued operations, net of tax	0	0
Net loss	79,280	126,251
Net loss attributable to noncontrolling interests	0	0
Net loss attributable to CME Ltd.	79,280	126,251
Comprehensive loss attributable to CME Ltd.	$ 79,280	$ 126,251