INCOME TAXES - Income Tax Expense (Benefit) Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Tax Expense (Benefit)	$ 82,846	$ 112,007
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	284,987	390,546
CSC Holdings
Income Tax Expense (Benefit)	82,846	112,007
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ 284,987	$ 390,546