LONG-TERM DEBT AND OTHER FINANCING ARRANGEMENTS Credit Facility (Details)																0 Months Ended		1 Months Ended
	Sep. 30, 2011 USD ($)		Dec. 31, 2010 USD ($)	Sep. 30, 2011 BMG Bank Mendes Gans [Member] USD ($)	Dec. 31, 2010 BMG Bank Mendes Gans [Member] USD ($)	Sep. 30, 2011 BMG Bank Mendes Gans [Member] Bank Overdrafts [Member] USD ($)	Sep. 30, 2011 BMG Bank Mendes Gans [Member] Bank Overdrafts [Member] EUR (€)	Sep. 30, 2011 Ceska Sporitelna [Member] Subsidiaries [Member] CZK	Sep. 30, 2011 Ceska Sporitelna [Member] Subsidiaries [Member] USD ($)	Sep. 30, 2011 Media Pro Entertainment Segment [Member] CNC Central National Cinematografei [Member] USD ($)	Sep. 30, 2011 Media Pro Entertainment Segment [Member] CNC Central National Cinematografei [Member] RON	Dec. 31, 2010 Media Pro Entertainment Segment [Member] CNC Central National Cinematografei [Member] RON	Dec. 31, 2010 Media Pro Entertainment Segment [Member] CNC Central National Cinematografei [Member] USD ($)	Sep. 30, 2011 CNC Central National Cinematografei [Member] USD ($)	Dec. 31, 2010 CNC Central National Cinematografei [Member] USD ($)	Oct. 26, 2011 CET 21 [Member] Secured Debt [Member] USD ($)	Oct. 26, 2011 CET 21 [Member] Secured Debt [Member] CZK	Sep. 26, 2011 CET 21 [Member] Secured Debt [Member] CZK	Sep. 26, 2011 CET 21 [Member] Secured Debt [Member] USD ($)	Sep. 30, 2011 CET 21 [Member] Secured Debt [Member] USD ($)	Sep. 30, 2011 CET 21 [Member] Secured Debt [Member] CZK	Dec. 31, 2010 CET 21 [Member] Secured Debt [Member] CZK	Oct. 21, 2010 CET 21 [Member] Secured Debt [Member] USD ($)	Oct. 21, 2010 CET 21 [Member] Secured Debt [Member] CZK
Line of Credit Facility [Line Items]
Credit facilities	$ 60,081,000		$ 14,004,000	$ 3,100,000	$ 12,300,000																	0
Line of Credit Facility, Increase, Additional Borrowings																27,300,000	500,000,000	1,000,000,000	54,600,000
Capital leases	3,767,000		4,236,000
Total credit facilites and capital leases	63,848,000		18,240,000
Current maturities	(4,070,000)		(13,562,000)
Total non current credit facilites an capital leasesd Capital Leases	59,778,000		4,678,000
Line of Credit Facility, Maximum Borrowing Capacity						6,800,000	5,000,000	300,000,000	16,400,000											40,900,000	750,000,000		81,800,000	1,500,000,000
Line of credit facility cash pooling arrangment deposit				36,400,000	20,300,000
Line Of Credit Facility Interest Rate Margin				2.00%					2.50%											4.50%
Long-term Debt	1,342,511,000	[1]	1,359,784,000							2,300,000	7,500,000	9,300,000	2,900,000
Number Of Loans Oustanding														12
Long Term Debt Fair Value Adjustment														$ 1,000,000	$ 1,200,000

[1] Third party debt is defined as credit facilities and capital leases or debt with entities that are not part of the CME Ltd. consolidated group.