SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Non-Cash Investing and Financing Activities:
Property and equipment accrued but unpaid	$ 210,204	$ 245,692
Notes payable issued to vendor for the purchase of equipment and other assets	11,582	16,204
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	78,564	6,501
Deferred financing costs accrued but unpaid	1,644	853
Supplemental Data:
Interest Paid, Excluding Capitalized Interest, Operating Activities	673,222	763,819
Income taxes paid, net	28,406	6,247
Noncash contribution from parent	115,187	0
CSC Holdings
Supplemental Data:
Interest Paid, Excluding Capitalized Interest, Operating Activities	673,222	724,299
Income taxes paid, net	$ 28,406	$ 6,247