DEBT, Summary of Debt Maturities (Details) $ in Thousands	Dec. 31, 2015 USD ($)
Summary of Debt Maturities [Abstract]
2016	$ 1,014,014	[1]
2017	1,797,914	[1]
2018	2,288,575	[1]
2019	540,141	[1]
2020	1,612,844	[1]
Thereafter	2,399,024	[1]
CSC Holdings, LLC
Summary of Debt Maturities [Abstract]
2016	1,014,014
2017	897,914
2018	1,538,575
2019	540,141
2020	1,112,844
Thereafter	$ 1,750,000

[1] Excludes the Cablevision senior notes held by Newsday Holdings.