Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Product Information [Line Items]
REVENUES	$ 13,653	$ 13,200
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	2,851		$ 2,921
Other noncurrent assets	4,793		4,769
Equipment installment plan receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	632		577
Other noncurrent assets	352		$ 261
Internet
Product Information [Line Items]
REVENUES	5,718	5,452
Video
Product Information [Line Items]
REVENUES	4,254	4,346
Voice
Product Information [Line Items]
REVENUES	373	391
Mobile service
Product Information [Line Items]
REVENUES	497	387
Residential revenue
Product Information [Line Items]
REVENUES	10,842	10,576
Small and medium business
Product Information [Line Items]
REVENUES	1,091	1,070
Enterprise
Product Information [Line Items]
REVENUES	682	661
Commercial revenue
Product Information [Line Items]
REVENUES	1,773	1,731
Advertising sales
Product Information [Line Items]
REVENUES	355	383
Other
Product Information [Line Items]
REVENUES	$ 683	$ 510