Computation Of Earnings Per Common Share (Tables)

6 Months Ended

Dec. 31, 2011

Computation Of Earnings Per Common Share [Abstract]

Reconciliation Of Weighted-Average Shares Used In The Calculation Of Basic And Diluted EPS

	Three Months Ended December 31,				Six Months Ended December 31,
	2011		2010		2011		2010
Weighted-average shares for basic EPS		74,632		74,033		74,573		74,021
Dilutive effect of shares issuable under share-based compensation plans and shares restricted on the same basis as underlying Cablevision restricted shares		2,747		3,010		2,710		2,906
Weighted-average shares for diluted EPS		77,379		77,043		77,283		76,927