DEBT, Credit Facility Debt (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Apr. 17, 2013
Credit facility debt [Abstract]
Amounts payable on or prior to December 31, 2015	$ 61,849		$ 47,463
Carrying value	2,780,649		3,766,145
Restricted Group
Credit facility debt [Abstract]
Amounts payable on or prior to December 31, 2015	61,849
Carrying value	2,300,649		3,286,145
Restricted Group | Revolving Loan Facility
Credit facility debt [Abstract]
Maturity Date	Apr. 17, 2018	[1]
Interest rate (in hundredths)	0.00%	[1]
Amounts payable on or prior to December 31, 2015	0	[1]
Carrying value	0	[1]	0	[1]
Letters of credit issued	71,661
Credit facility amount undrawn and available to be drawn	1,428,339
Restricted Group | Term A loan facility
Credit facility debt [Abstract]
Maturity Date	Apr. 17, 2018
Interest rate (in hundredths)	1.92%
Amounts payable on or prior to December 31, 2015	47,926
Carrying value	934,547		958,510
Restricted Group | Term B Loan Facility
Credit facility debt [Abstract]
Maturity Date	Apr. 17, 2020	[2]
Interest rate (in hundredths)	2.67%	[2]
Amounts payable on or prior to December 31, 2015	13,923	[2]
Carrying value	1,366,102	[2]	2,327,635	[2]
Debt unamortized discount	5,326		10,615		11,750
Newsday Holdings LLC | Floating Term Rate Loan Facility
Credit facility debt [Abstract]
Maturity Date	Oct. 12, 2016
Interest rate (in hundredths)	3.67%
Amounts payable on or prior to December 31, 2015	0
Carrying value	$ 480,000		$ 480,000

[1] At December 31, 2014, $71,661 of the revolving loan facility was restricted for certain letters of credit issued on behalf of CSC Holdings and $1,428,339 of the revolving loan facility was undrawn and available, subject to covenant limitations, to be drawn to meet the net funding and investment requirements of the Restricted Group.

[2] The unamortized discount related to the Term B loan facility amounted to $5,326 and $10,615 at December 31, 2014 and 2013, respectively.