CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues, net (including revenues, net from affiliates)	$ 1,523,667	$ 1,535,225
Operating expenses:
Technical and operating (excluding depreciation, amortization and impairments shown below and including charges from affiliates)	803,567	725,957
Selling, general and administrative (including net charges from affiliates)	392,791	349,769
Restructuring credits	(365)	(298)
Depreciation and amortization (including impairments)	236,382	212,364
Total operating expenses	1,432,375	1,287,792
Operating income	91,292	247,433
Other income (expense):
Interest expense, net	(153,284)	(166,962)
Gain on investments, net	99,458	135,325
Loss on equity derivative contracts, net	(71,716)	(111,194)
Loss on interest rate swap contracts, net	0	(1,645)
Miscellaneous, net	379	544
Total other income (expense)	(125,163)	(143,932)
Income (loss) from continuing operations before income taxes	(33,871)	103,501
Income tax benefit (expense)	17,221	(39,137)
Income (loss) from continuing operations	(16,650)	64,364
Income (loss) from discontinued operations, net of income taxes	252	(7,260)
Net income (loss)	(16,398)	57,104
Net loss attributable to noncontrolling interests	257	143
Net income (loss) attributable to Cablevision Systems Corporation stockholders/CSC Holdings, LLC's sole member	(16,141)	57,247
Basic net income (loss) per share attributable to Cablevision Systems Corporation stockholders:
Income (loss) from continuing operations (in dollars per share)	$ (0.06)	$ 0.24
Income (loss) from discontinued operations (in dollars per share)	$ 0	$ (0.03)
Net income (loss) (in dollars per share)	$ (0.06)	$ 0.21
Basic weighted average common shares (in shares)	259,500	267,419
Diluted net income (loss) per share attributable to Cablevision Systems Corporation stockholders:
Income (loss) from continuing operations (in dollars per share)	$ (0.06)	$ 0.24
Income (loss) from discontinued operations (in dollars per share)	$ 0	$ (0.03)
Net income (loss) (in dollars per share)	$ (0.06)	$ 0.21
Diluted weighted average common shares (in shares)	259,500	274,038
Amounts attributable to Cablevision Systems Corporation stockholders/CSC Holdings, LLC's sole member:
Income (loss) from continuing operations, net of income taxes	(16,393)	64,507
Income (loss) from discontinued operations, net of income taxes	252	(7,260)
Net income (loss) attributable to Cablevision Systems Corporation stockholders/CSC Holdings, LLC's sole member	(16,141)	57,247
Cash dividends declared per share of common stock (in dollars per share)	$ 0.15	$ 0.15
CSC Holdings, LLC [Member]
Revenues, net (including revenues, net from affiliates)	1,523,667	1,535,225
Operating expenses:
Technical and operating (excluding depreciation, amortization and impairments shown below and including charges from affiliates)	803,567	725,957
Selling, general and administrative (including net charges from affiliates)	392,791	349,769
Restructuring credits	(365)	(298)
Depreciation and amortization (including impairments)	236,382	212,364
Total operating expenses	1,432,375	1,287,792
Operating income	91,292	247,433
Other income (expense):
Interest expense	(96,564)	(121,349)
Interest income	14,857	15,079
Gain on investments, net	99,458	135,325
Loss on equity derivative contracts, net	(71,716)	(111,194)
Loss on interest rate swap contracts, net	0	(1,645)
Miscellaneous, net	379	544
Total other income (expense)	(53,586)	(83,240)
Income (loss) from continuing operations before income taxes	37,706	164,193
Income tax benefit (expense)	(13,268)	(65,381)
Income (loss) from continuing operations	24,438	98,812
Income (loss) from discontinued operations, net of income taxes	252	(7,260)
Net income (loss)	24,690	91,552
Net loss attributable to noncontrolling interests	257	143
Net income (loss) attributable to Cablevision Systems Corporation stockholders/CSC Holdings, LLC's sole member	24,947	91,695
Amounts attributable to Cablevision Systems Corporation stockholders/CSC Holdings, LLC's sole member:
Income (loss) from continuing operations, net of income taxes	24,695	98,955
Income (loss) from discontinued operations, net of income taxes	252	(7,260)
Net income (loss) attributable to Cablevision Systems Corporation stockholders/CSC Holdings, LLC's sole member	$ 24,947	$ 91,695