LONG-TERM DEBT AND OTHER FINANCING ARRANGEMENTS Debt (Details) (USD $)	Jun. 30, 2014		May 02, 2014	Dec. 31, 2013
Overview [Abstract]
Carrying Amount	$ 802,517,000			$ 956,956,000
Long-term Debt, Current and Noncurrent [Abstract]
Carrying Amount	802,517,000			956,956,000
Total credit facilities and capital leases	25,239,000			8,098,000
Total long-term debt and other financing arrangements	827,756,000			965,054,000
Less: current maturities	(1,479,000)			(2,111,000)
Total non-current long-term debt and other financing arrangements	826,277,000			962,943,000
Long-term Debt, Fiscal Year Maturity [Abstract]
2014	571,000
2015	261,034,000
2016	0
2017	758,682,000
2018	528,000
2019 and thereafter	2,922,000
Total senior debt and credit facilities	1,023,737,000
Net discount	(199,918,000)
Carrying amount of senior debt and credit facilities	823,819,000
2015 Convertible Notes [Member]
Overview [Abstract]
Principal Amount of Liability Component	261,034,000			261,034,000
Unamortized (Discount)/Premium	(14,783,000)			(19,841,000)
Carrying Amount	246,251,000			241,193,000
Equity Component	11,907,000			11,907,000
Long-term Debt, Current and Noncurrent [Abstract]
Carrying Amount	246,251,000			241,193,000
2017 Fixed Rate Notes [Member]
Overview [Abstract]
Principal Amount of Liability Component	327,790,000
Unamortized (Discount)/Premium	4,910,000
Carrying Amount	332,700,000			336,581,000
Equity Component	0
Long-term Debt, Current and Noncurrent [Abstract]
Carrying Amount	332,700,000			336,581,000
2017 PIK Notes [Member]
Overview [Abstract]
Principal Amount of Liability Component	400,000,000	[1]	400,000,000
Unamortized (Discount)/Premium	(176,434,000)	[1]
Carrying Amount	223,566,000	[1]		0
Equity Component	178,626,000	[1]
Long-term Debt, Current and Noncurrent [Abstract]
Carrying Amount	223,566,000	[1]		0
2017 Term Loan Plus Interest Paid-in-Kind [Member]
Overview [Abstract]
Principal Amount of Liability Component	30,727,000	[2],[3]
Unamortized (Discount)/Premium	(13,051,000)	[2],[3]
Carrying Amount	17,676,000	[2],[3]
Equity Component	13,199,000	[2],[3]
Long-term Debt, Current and Noncurrent [Abstract]
Carrying Amount	17,676,000	[2],[3]
2017 Term Loan [Member]
Overview [Abstract]
Principal Amount of Liability Component	30,000,000	[2],[3]
Carrying Amount	17,676,000	[4]		0	[4]
Long-term Debt, Current and Noncurrent [Abstract]
Carrying Amount	17,676,000	[4]		0	[4]
2017 Revolving Credit Facility [Member]
Overview [Abstract]
Principal Amount of Liability Component	0	[2]
Unamortized (Discount)/Premium	0	[2]
Carrying Amount	0	[2]
Equity Component	50,596,000	[2]
Long-term Debt, Current and Noncurrent [Abstract]
Carrying Amount	0	[2]
Other Credit Facilities [Member]
Overview [Abstract]
Principal Amount of Liability Component	4,186,000	[5]
Unamortized (Discount)/Premium	(560,000)	[5]
Carrying Amount	3,626,000	[5]
Equity Component	0	[5]
Long-term Debt, Current and Noncurrent [Abstract]
Carrying Amount	3,626,000	[5]
Senior Debt and Credit Facilities [Member]
Overview [Abstract]
Principal Amount of Liability Component	1,023,737,000
Unamortized (Discount)/Premium	(199,918,000)
Carrying Amount	823,819,000
Long-term Debt, Current and Noncurrent [Abstract]
Carrying Amount	$ 823,819,000

[1] The 2017 PIK Notes were issued, along with the Unit Warrants, as a unit in the Rights Offering and related financing transactions. The equity component above represents the fair value ascribed to the Unit Warrants (see Note 14, "Equity"). The fair value is accounted for as a discount on the 2017 PIK Notes and is being amortized over the life of the 2017 PIK Notes using the effective interest method.

[2] The equity component of the 2017 Term Loan and 2017 Revolving Credit Facility above represents the fair value ascribed to the Initial Warrants (see Note 14, "Equity") based on the relative borrowing capacity of these facilities. The fair value is accounted for as a discount on the 2017 Term Loan, which is being amortized over the life of the 2017 Term Loan using the effective interest method; and as debt issuance costs for the 2017 Revolving Credit Facility, which are being amortized on a straight-line basis over the lives of the respective instruments.

[3] The original principal amount of the 2017 Term Loan was US$ 30.0 million. Amount presented represents original principal amount plus interest paid-in-kind by adding such amount to the outstanding principal amount.

[4] As at June 30, 2014, the principal amount outstanding of the 15.0% term loan facility due 2017 (the "2017 Term Loan") was US$ 30.7 million. The carrying value of the 2017 Term Loan is comprised of the original outstanding principal amount of US$ 30.0 million less an issuance discount plus interest for which we made an election to pay in-kind. Interest is payable semi-annually in arrears on each June 30 and December 31, which the Company may pay in cash or in-kind. The 2017 Term Loan matures on December 1, 2017.The 2017 Term Loan is jointly and severally guaranteed by CME NV and CME BV and is secured by a pledge over 100% of the outstanding shares of each of CME NV and CME BV. The terms of the 2017 Term Loan contains limitations on CME’s ability to incur indebtedness, incur guarantees, grant liens, pay dividends or make other distributions, enter into certain affiliate transactions, consolidate, merge or effect a corporate reconstruction, make certain investments acquisitions and loans, and conduct certain asset sales. The 2017 Term Loan also contains maintenance covenants in respect of interest cover, cash flow cover and total leverage ratios, and has more restrictive provisions, including in respect of certain events of defaults, than corresponding provisions contained in the indenture governing the 2017 Fixed Rate Notes and the 2017 PIK Notes.Under the terms of the 2017 Term Loan, we are permitted to prepay the 2017 Term Loan in whole, but not in part, subject to the concurrent repayment and discharge of the 2017 PIK Notes. Certain derivative instruments, including contingent event of default and change of control put options, have been identified as being embedded in the 2017 Term Loan. The embedded derivatives are not considered clearly and closely related to the 2017 Term Loan, and as such are required to be accounted for separately. The probability-weighted fair value of the embedded derivatives was not material at issuance or at June 30, 2014.

[5] The unamortized discount on the Other credit facilities represents the fair value adjustment recorded on issuance of the CNC loans (as defined and further described in item (e) under the heading 'Credit Facilities and Capital Lease Obligations' below).