CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $)	Sep. 30, 2011	Dec. 31, 2010
CME Ltd. shareholders' equity:
Preferred stock, shares outstanding (in shares)	0	0
Preferred stock, par value (in dollars per share)	$ 0.08	$ 0.08
Common Class A [Member]
CME Ltd. shareholders' equity:
Common stock, shares issued (in shares)	56,892,114	56,878,489
Common stock, par value (in dollars per share)	$ 0.08	$ 0.08
Common Class B [Member]
CME Ltd. shareholders' equity:
Common stock, shares issued (in shares)	7,500,936	7,490,936
Common stock, par value (in dollars per share)	$ 0.08	$ 0.08

Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

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