May refer to a number of different types of wires or groups of wires capable of carrying voice or data transmissions.

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Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount before accumulated depreciation, depletion and amortization of other physical assets used in the normal conduct of business to produce goods and services and not intended for resale.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Land	$ 62	$ 56
Buildings	541	533
Leasehold and land improvements	1,476	1,404
Cable and wire	2,403	2,195
Network and switching equipment	2,671	2,634
Cell site equipment	4,150	4,017
Office furniture and equipment	346	394
Other operating assets and equipment	176	189
System development	1,864	1,709
Work in process	576	528
Total property, plant and equipment, gross	14,265	13,659
Accumulated depreciation and amortization	(9,904)	(9,687)
Property, plant and equipment, net	4,361	3,972
Depreciation and amortization expense	851	862	$ 890
(Gain) loss on asset disposals, net	$ 26	$ 27	$ 12
Buildings \| Minimum
Property, Plant and Equipment [Line Items]
Useful life	5 years
Buildings \| Maximum
Property, Plant and Equipment [Line Items]
Useful life	40 years
Leasehold and land improvements \| Minimum
Property, Plant and Equipment [Line Items]
Useful life	1 year
Leasehold and land improvements \| Maximum
Property, Plant and Equipment [Line Items]
Useful life	30 years
Cable and wire \| Minimum
Property, Plant and Equipment [Line Items]
Useful life	15 years
Cable and wire \| Maximum
Property, Plant and Equipment [Line Items]
Useful life	40 years
Network and switching equipment \| Minimum
Property, Plant and Equipment [Line Items]
Useful life	3 years
Network and switching equipment \| Maximum
Property, Plant and Equipment [Line Items]
Useful life	10 years
Cell site equipment \| Minimum
Property, Plant and Equipment [Line Items]
Useful life	7 years
Cell site equipment \| Maximum
Property, Plant and Equipment [Line Items]
Useful life	25 years
Office furniture and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Useful life	3 years
Office furniture and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Useful life	10 years
Other operating assets and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Useful life	1 year
Other operating assets and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Useful life	12 years
System development \| Minimum
Property, Plant and Equipment [Line Items]
Useful life	1 year
System development \| Maximum
Property, Plant and Equipment [Line Items]
Useful life	7 years