SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 10,090,849	$ 9,894,642	$ 9,760,859
Broadband [Member]
Disaggregation of Revenue [Line Items]
Revenues	3,925,089	3,689,159	3,222,605
Pay TV [Member]
Disaggregation of Revenue [Line Items]
Revenues	3,526,205	3,670,859	3,997,873
Telephony [Member]
Disaggregation of Revenue [Line Items]
Revenues	404,813	468,777	598,694
Business Services and Wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,586,044	1,454,532	1,428,532
Advertising and News [Member]
Disaggregation of Revenue [Line Items]
Revenues	550,667	519,205	475,904
Mobile [Member]
Disaggregation of Revenue [Line Items]
Revenues	84,194	78,127	21,264
Other
Disaggregation of Revenue [Line Items]
Revenues	$ 13,837	$ 13,983	$ 15,987