Property, Plant and Equipment - Schedule of Property, Plant, and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Property, plant and equipment
Gross property, plant and equipment	$ 39,052	$ 40,166
Accumulated depreciation	(19,886)	(19,271)
Net property, plant and equipment	19,166	20,895
Land
Property, plant and equipment
Gross property, plant and equipment	651	751
Fiber, conduit and other outside plant
Property, plant and equipment
Gross property, plant and equipment	$ 14,451	15,366
Fiber, conduit and other outside plant | Minimum
Property, plant and equipment
Depreciable Lives	15 years
Fiber, conduit and other outside plant | Maximum
Property, plant and equipment
Depreciable Lives	45 years
Central office and other network electronics
Property, plant and equipment
Gross property, plant and equipment	$ 15,077	15,394
Central office and other network electronics | Minimum
Property, plant and equipment
Depreciable Lives	3 years
Central office and other network electronics | Maximum
Property, plant and equipment
Depreciable Lives	10 years
Support assets
Property, plant and equipment
Gross property, plant and equipment	$ 6,863	7,181
Support assets | Minimum
Property, plant and equipment
Depreciable Lives	3 years
Support assets | Maximum
Property, plant and equipment
Depreciable Lives	30 years
Construction in progress
Property, plant and equipment
Gross property, plant and equipment	$ 2,010	$ 1,474