PROPERTY, PLANT AND EQUIPMENT - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 13,483,319	$ 12,237,839
Less accumulated depreciation and amortization	(7,142,852)	(6,431,843)
Property, plant and equipment, net	6,340,467	5,805,996
Depreciation	1,145,316	1,344,732	$ 1,475,251
Customer premise equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,991,746	$ 1,845,830
Customer premise equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		3 years
Customer premise equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		5 years
Headends and related equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,325,852	$ 2,158,704
Headends and related equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years	5 years
Headends and related equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	25 years	25 years
Infrastructure
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 6,606,817	$ 5,964,419
Infrastructure | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		5 years
Infrastructure | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		25 years
Equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,364,560	$ 1,237,057
Equipment and software | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		3 years
Equipment and software | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		10 years
Construction in progress (including materials and supplies)
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	291,611	$ 174,610
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	74,481	$ 65,724
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		5 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		8 years
Transportation equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	145,531	$ 150,974
Transportation equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		5 years
Transportation equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		10 years
Buildings and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	506,363	$ 481,693
Buildings and building improvements | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		10 years
Buildings and building improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		40 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	127,565	$ 110,037
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	48,793	48,791
Acquisition and development of internal use software
Property, Plant and Equipment [Line Items]
Property, plant and equipment capitalized	$ 145,837	$ 134,857	$ 132,966
Plant | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	10 years
Plant | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	25 years