CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2014	Dec. 31, 2013
Current Assets:
Cash and cash equivalents	$ 850,413,000	$ 702,224,000
Accounts receivable, trade (less allowance for doubtful accounts of $12,112 and $14,614)	277,526,000	283,079,000
Prepaid expenses and other current assets	140,094,000	158,433,000
Amounts due from affiliates	1,732,000	1,520,000
Deferred tax asset	37,943,000	159,824,000
Investment securities pledged as collateral	622,958,000	419,354,000
Total current assets	1,930,666,000	1,724,434,000
Property, plant and equipment, net of accumulated depreciation of $9,454,315 and $9,264,848	3,025,747,000	2,978,353,000
Other receivables	854,000	1,683,000
Investment securities pledged as collateral	622,958,000	696,730,000
Derivative contracts	7,317,000	3,385,000
Other assets	43,651,000	29,184,000
Amortizable intangible assets, net of accumulated amortization of $60,018 and $78,047	36,781,000	49,952,000
Indefinite-lived cable television franchises	731,848,000	731,848,000
Trademarks and other indefinite-lived intangible assets	7,250,000	7,450,000
Goodwill	264,690,000	264,690,000
Deferred financing costs, net of accumulated amortization of $58,651 and $42,602	93,409,000	103,367,000
Total assets	6,765,171,000	6,591,076,000
Current Liabilities:
Accounts payable	431,761,000	422,929,000
Accrued liabilities:
Interest	117,354,000	114,569,000
Employee related costs	306,270,000	211,682,000
Other accrued expenses	160,822,000	174,674,000
Amounts due to affiliates	29,651,000	30,941,000
Deferred revenue	52,932,000	47,229,000
Liabilities under derivative contracts	93,010,000	99,577,000
Credit facility debt	61,849,000	47,463,000
Collateralized indebtedness	466,335,000	248,388,000
Capital lease obligations	17,216,000	12,025,000
Notes payable	12,968,000	3,744,000
Senior notes	0	27,831,000
Total current liabilities	1,750,168,000	1,441,052,000
Defined benefit plan obligations	120,644,000	162,812,000
Deferred revenue	4,701,000	5,235,000
Liabilities under derivative contracts	9,207,000	47,370,000
Other liabilities	166,723,000	219,018,000
Deferred tax liability	611,088,000	570,056,000
Credit facility debt	2,718,800,000	3,718,682,000
Collateralized indebtedness	519,848,000	569,562,000
Capital lease obligations	29,196,000	19,265,000
Notes payable	10,943,000	1,590,000
Senior notes and debentures	5,855,867,000	5,110,684,000
Total liabilities	11,797,185,000	11,865,326,000
Commitments and contingencies
Redeemable noncontrolling interest	8,676,000	9,294,000
Stockholders' Deficiency:
Preferred Stock, $.01 par value, 50,000,000 shares authorized, none issued	0	0
Paid-in capital	823,103,000	885,601,000
Accumulated deficit	(4,234,860,000)	(4,546,299,000)
Total stockholders'/member's deficiency before treasury stock, accumulated other comprehensive loss and noncontrolling interest	(3,408,213,000)	(3,657,232,000)
Treasury stock, at cost (80,122,914 and 78,890,427 CNYG Class A common shares)	(1,591,021,000)	(1,584,404,000)
Accumulated other comprehensive loss	(42,235,000)	(42,694,000)
Total stockholders' deficiency	(5,041,469,000)	(5,284,330,000)
Noncontrolling interests	779,000	786,000
Total deficiency	(5,040,690,000)	(5,283,544,000)
Total liabilities and stockholders'/member's deficiency	6,765,171,000	6,591,076,000
CNYG Class A Common Stock
Stockholders' Deficiency:
Common stock	3,003,000	2,925,000
CNYG Class B Common Stock
Stockholders' Deficiency:
Common stock	541,000	541,000
RMG Class A Common Stock
Stockholders' Deficiency:
Common stock	0	0
RMG Class B Common Stock
Stockholders' Deficiency:
Common stock	0	0
CSC Holdings, LLC
Current Assets:
Cash and cash equivalents	813,396,000	651,058,000
Accounts receivable, trade (less allowance for doubtful accounts of $12,112 and $14,614)	277,526,000	283,079,000
Prepaid expenses and other current assets	131,891,000	154,876,000
Amounts due from affiliates	1,694,000	115,538,000
Investment securities pledged as collateral	622,958,000	419,354,000
Total current assets	1,847,465,000	1,623,905,000
Property, plant and equipment, net of accumulated depreciation of $9,454,315 and $9,264,848	3,025,747,000	2,978,353,000
Other receivables	854,000	1,683,000
Investment securities pledged as collateral	622,958,000	696,730,000
Derivative contracts	7,317,000	3,385,000
Other assets	43,651,000	29,184,000
Amortizable intangible assets, net of accumulated amortization of $60,018 and $78,047	36,781,000	49,952,000
Indefinite-lived cable television franchises	731,848,000	731,848,000
Trademarks and other indefinite-lived intangible assets	7,250,000	7,450,000
Goodwill	264,690,000	264,690,000
Deferred financing costs, net of accumulated amortization of $58,651 and $42,602	59,470,000	61,367,000
Total assets	6,648,031,000	6,448,547,000
Current Liabilities:
Accounts payable	431,761,000	422,929,000
Accrued liabilities:
Interest	62,555,000	59,130,000
Employee related costs	302,397,000	210,233,000
Other accrued expenses	160,822,000	174,187,000
Amounts due to affiliates	135,636,000	30,887,000
Deferred tax liability	105,285,000	60,582,000
Deferred revenue	52,932,000	47,229,000
Liabilities under derivative contracts	93,010,000	99,577,000
Credit facility debt	61,849,000	47,463,000
Collateralized indebtedness	466,335,000	248,388,000
Capital lease obligations	17,216,000	12,025,000
Notes payable	12,968,000	3,744,000
Total current liabilities	1,902,766,000	1,416,374,000
Defined benefit plan obligations	120,644,000	162,812,000
Deferred revenue	4,701,000	5,235,000
Liabilities under derivative contracts	9,207,000	47,370,000
Other liabilities	162,276,000	214,409,000
Deferred tax liability	626,367,000	617,837,000
Credit facility debt	2,718,800,000	3,718,682,000
Collateralized indebtedness	519,848,000	569,562,000
Capital lease obligations	29,196,000	19,265,000
Notes payable	10,943,000	1,590,000
Senior notes and debentures	3,062,126,000	2,309,403,000
Total liabilities	9,166,874,000	9,082,539,000
Commitments and contingencies
Redeemable noncontrolling interest	8,676,000	9,294,000
Stockholders' Deficiency:
Accumulated deficit	(2,024,065,000)	(2,486,073,000)
Senior notes due from Cablevision	(611,455,000)	(611,455,000)
Other member's equity (17,631,479 membership units issued and outstanding)	149,457,000	496,150,000
Total stockholders'/member's deficiency before treasury stock, accumulated other comprehensive loss and noncontrolling interest	(2,486,063,000)	(2,601,378,000)
Accumulated other comprehensive loss	(42,235,000)	(42,694,000)
Total stockholders' deficiency	(2,528,298,000)	(2,644,072,000)
Noncontrolling interests	779,000	786,000
Total deficiency	(2,527,519,000)	(2,643,286,000)
Total liabilities and stockholders'/member's deficiency	$ 6,648,031,000	$ 6,448,547,000