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Preferred Members' Interests	9 Months Ended
Preferred Members' Interests	Sep. 30, 2011
Preferred Members' Interests [Abstract]
PREFERRED MEMBERS' INTERESTS	8. PREFERRED MEMBERS’ INTERESTS Mediacom LLC has a $150 million preferred membership investment in us, which has a 12% annual cash dividend, payable quarterly. During each of the three months ended September 30, 2011 and 2010, we paid $4.5 million in cash dividends on the preferred membership interest. During each of the months ended September 30, 2011 and 2010, we paid $13.5 million in cash dividends on the preferred membership interest.