Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2010

Notes To Financial Statements [Abstract]

Assets and liabilities measured at fair value on a recurring basis

The following table presents for each of these hierarchy levels, the Company's financial assets and financial liabilities that are measured at fair value on a recurring basis at December 31, 2010 and December 31, 2009:

At December 31, 2010:
	Level I		Level II		Level III		Total
Assets:
Money market funds	$	259,463	$	-	$	-	$	259,463
Investment securities		101		-		-		101
Investment securities pledged as collateral		471,864		-		-		471,864
Liabilities:
Liabilities under derivative contracts:
Prepaid forward contracts		-		59,300		-		59,300
Interest rate swap contracts		-		167,278		-		167,278

At December 31, 2009:
	Level I		Level II		Level III		Total
Assets:
Cash equivalents(a)	$	188,093	$	-	$	-	$	188,093
Investment securities		92		-		-		92
Investment securities pledged as collateral		362,113		-		-		362,113
Derivative contracts		-		45,498		-		45,498
Liabilities:
Liabilities under derivative contracts		-		220,990		-		220,990

______________

(a) Represents the Company's investment in funds that invest primarily in money market securities.

Carrying values and estimated fair values of financial instruments, excluding those carried at fair value

The carrying values and estimated fair values of the Company's financial instruments, excluding those that are carried at fair value in the accompanying consolidated balance sheets, are summarized as follows:

	December 31, 2010
	Carrying Amount		Estimated Fair Value
CSC Holdings notes receivable:
Cablevision senior notes held by Newsday Holdings LLC(a)	$	753,717	$	795,508
Debt instruments:
Credit facility debt(b)	$	5,756,510	$	5,802,917
Collateralized indebtedness		352,606		349,853
Senior notes and debentures		3,402,505		3,781,994
CSC Holdings total debt instruments		9,511,621		9,934,764
Cablevision senior notes and debentures		2,165,688		2,328,644
Cablevision total debt instruments	$	11,677,309	$	12,263,408

	December 31, 2009
	Carrying Amount		Estimated Fair Value
CSC Holdings notes receivable:
Cablevision senior notes held by Newsday Holdings LLC(a)	$	660,951	$	721,317
Debt instruments:
Credit facility debt(b)	$	4,718,750	$	4,752,245
Collateralized indebtedness		375,832		371,921
Senior notes and debentures		3,134,909		3,411,945
CSC Holdings total debt instruments		8,229,491		8,536,111
Cablevision senior notes and debentures		1,887,691		1,994,670
Cablevision total debt instruments	$	10,117,182	$	10,530,781

______________

(a) These notes are eliminated at the consolidated Cablevision level.

(b) The carrying value of the Company's credit facility debt which bears interest at variable rates approximates its fair value.