CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenues, net (including revenues, net from affiliates)	$ 6,700,848	$ 6,177,575	$ 5,900,074
Operating expenses:
Technical and operating (excluding depreciation, amortization and impairments shown below and including charges from affiliates)	2,968,540	2,663,748	2,532,844
Selling, general and administrative (net of charges to affiliates)	1,482,344	1,440,731	1,389,525
Restructuring expense (credits)	6,311	(58)	5,583
Depreciation and amortization (including impairments)	1,014,974	887,092	916,408
Total operating expenses	5,472,169	4,991,513	4,844,360
Operating income (loss)	1,228,679	1,186,062	1,055,714
Other income (expense):
Interest expense	(746,587)	(711,293)	(673,192)
Interest income	881	542	3,378
Gain on sale of affiliate interests	683	2,051	0
Gain (loss) on investments, net	37,384	109,813	(977)
Gain (loss) on equity derivative contracts, net	1,454	(72,044)	631
Loss on interest rate swap contracts, net	(7,973)	(85,013)	(75,631)
Loss on extinguishment of debt and write-off of deferred financing costs	(92,692)	(110,049)	(73,457)
Miscellaneous, net	1,265	1,447	543
Total other income (expense)	(805,585)	(864,546)	(818,705)
Income (loss) from continuing operations before income taxes	423,094	321,516	237,009
Income tax (expense) benefit	(184,436)	(113,767)	(113,177)
Income from continuing operations	238,658	207,749	123,832
Income from discontinued operations, net of income taxes	53,623	153,848	161,467
Net income	292,281	361,597	285,299
Net loss (income) attributable to noncontrolling interests	(424)	(649)	273
Net income attributable to Cablevision Systems Corporation stockholders/CSC Holdings, LLC's sole member	291,857	360,948	285,572
Cash dividends declared and paid per share of common stock (in dollars per share)	$ 0.575	$ 0.475	$ 0.40
Basic net income per share attributable to Cablevision Systems Corporation stockholders:
Income from continuing operations (in dollars per share)	$ 0.86	$ 0.71	$ 0.43
Income from discontinued operations (in dollars per share)	$ 0.19	$ 0.52	$ 0.55
Net income (in dollars per share)	$ 1.06	$ 1.23	$ 0.98
Basic weighted average common shares (in shares)	276,369	293,165	291,759
Diluted net income per share attributable to Cablevision Systems Corporation stockholders:
Income from continuing operations (in dollars per share)	$ 0.84	$ 0.69	$ 0.42
Income from discontinued operations (in dollars per share)	$ 0.19	$ 0.51	$ 0.54
Net income (in dollars per share)	$ 1.02	$ 1.20	$ 0.96
Diluted weighted average common shares (in shares)	284,904	301,880	298,444
Amounts attributable to Cablevision Systems Corporation stockholders/CSC Holdings, LLC's sole member:
Income from continuing operations, net of income taxes	238,234	207,100	124,105
Income from discontinued operations, net of income taxes	53,623	153,848	161,467
Net income	291,857	360,948	285,572
CSC Holdings, LLC [Member]
Revenues, net (including revenues, net from affiliates)	6,700,848	6,177,575	5,900,074
Operating expenses:
Technical and operating (excluding depreciation, amortization and impairments shown below and including charges from affiliates)	2,968,540	2,663,748	2,532,844
Selling, general and administrative (net of charges to affiliates)	1,482,344	1,440,731	1,389,525
Restructuring expense (credits)	6,311	(58)	5,583
Depreciation and amortization (including impairments)	1,014,974	887,092	916,408
Total operating expenses	5,472,169	4,991,513	4,844,360
Operating income (loss)	1,228,679	1,186,062	1,055,714
Other income (expense):
Interest expense	(563,069)	(531,210)	(559,072)
Interest income	59,945	60,872	65,400
Gain on sale of affiliate interests	683	2,051	0
Gain (loss) on investments, net	37,384	109,813	(977)
Gain (loss) on equity derivative contracts, net	1,454	(72,044)	631
Loss on interest rate swap contracts, net	(7,973)	(85,013)	(75,631)
Loss on extinguishment of debt and write-off of deferred financing costs	(92,692)	0	(72,870)
Miscellaneous, net	1,265	1,433	543
Total other income (expense)	(563,003)	(514,098)	(641,976)
Income (loss) from continuing operations before income taxes	665,676	671,964	413,738
Income tax (expense) benefit	(292,598)	(250,886)	(184,255)
Income from continuing operations	373,078	421,078	229,483
Income from discontinued operations, net of income taxes	53,623	153,848	161,467
Net income	426,701	574,926	390,950
Net loss (income) attributable to noncontrolling interests	(424)	(649)	273
Net income attributable to Cablevision Systems Corporation stockholders/CSC Holdings, LLC's sole member	426,277	574,277	391,223
Amounts attributable to Cablevision Systems Corporation stockholders/CSC Holdings, LLC's sole member:
Income from continuing operations, net of income taxes	372,654	420,429	229,756
Income from discontinued operations, net of income taxes	53,623	153,848	161,467
Net income	$ 426,277	$ 574,277	$ 391,223