Revenues - Disaggregation of Revenues (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
REVENUES	$ 54,607	$ 54,022	$ 51,682
Revenue from Contract with Customer, Including Assessed Tax	993	1,100	1,100
Internet
Disaggregation of Revenue [Line Items]
REVENUES	23,032	22,222	21,094
Video
Disaggregation of Revenue [Line Items]
REVENUES	16,351	17,460	17,630
Voice
Disaggregation of Revenue [Line Items]
REVENUES	1,510	1,559	1,598
Mobile service
Disaggregation of Revenue [Line Items]
REVENUES	2,243	1,698	1,239
Residential revenue
Disaggregation of Revenue [Line Items]
REVENUES	43,136	42,939	41,561
Small and medium business
Disaggregation of Revenue [Line Items]
REVENUES	4,353	4,350	4,198
Enterprise
Disaggregation of Revenue [Line Items]
REVENUES	2,770	2,677	2,573
Commercial revenue
Disaggregation of Revenue [Line Items]
REVENUES	7,123	7,027	6,771
Advertising sales
Disaggregation of Revenue [Line Items]
REVENUES	1,551	1,882	1,594
Other
Disaggregation of Revenue [Line Items]
REVENUES	$ 2,797	$ 2,174	$ 1,756