Property, Plant and Equipment Disclosure
Asset Age Ratios (Summary)
Average Age
Estimated Total Useful Life
Estimated Age, Time Elapsed Since Purchase
Estimated Remaining Life

AT&T Inc., balance sheet: property, plant and equipment

US$ in millions

	Dec 31, 2023	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019
Land	1,377)	1,381)	2,458)	2,571)	2,651)
Buildings and improvements	39,380)	38,751)	39,306)	39,418)	38,924)
Central office equipment	100,264)	98,468)	97,069)	95,981)	96,061)
Cable, wiring and conduit	90,109)	84,447)	79,961)	75,409)	72,042)
Other equipment	85,379)	81,761)	86,933)	91,791)	97,440)
Software	17,742)	17,640)	17,916)	18,482)	22,244)
Under construction	5,640)	7,182)	5,845)	4,099)	4,176)
Property, plant and equipment, gross	339,891)	329,630)	329,488)	327,751)	333,538)
Accumulated depreciation and amortization	(211,402)	(202,185)	(203,584)	(200,436)	(203,410)
Property, plant and equipment, net	128,489)	127,445)	125,904)	127,315)	130,128)

Based on: 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31).

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Item	Description	The company
Property, plant and equipment, gross	Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.	AT&T Inc. property, plant and equipment, gross increased from 2021 to 2022 and from 2022 to 2023.
Property, plant and equipment, net	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.	AT&T Inc. property, plant and equipment, net increased from 2021 to 2022 and from 2022 to 2023.

AT&T Inc., asset age ratios

	Dec 31, 2023	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019
Average age ratio	62.45%	61.60%	62.25%	61.64%	61.47%
Estimated total useful life (years)	18	18	18	16	16
Estimated age, time elapsed since purchase (years)	11	11	11	10	10
Estimated remaining life (years)	7	7	7	6	6

Based on: 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31).

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Asset age ratio	Description	The company
Average age ratio	As long as straight-line depreciation is used, this is an accurate estimate of asset age as a percentage of depreciable life. The relative age is a useful measure of whether the company fixed asset base is old or new. Newer assets are likely to be more efficient.	AT&T Inc. average age ratio of depreciable property, plant and equipment improved from 2021 to 2022 but then deteriorated significantly from 2022 to 2023.
Estimated total useful life	Over longer time periods, this ratio is a useful measure of company depreciation policy and can be used for comparisons with competitors.	AT&T Inc. estimated total useful life of depreciable property, plant and equipment increased from 2021 to 2022 but then slightly decreased from 2022 to 2023.
Estimated time elapsed since purchase	The approximate age in years of a company fixed assets. Useful for comparison purposes.	AT&T Inc. estimated time elapsed since purchase of depreciable property, plant and equipment deteriorated from 2021 to 2022 and from 2022 to 2023.
Estimated remaining life		AT&T Inc. estimated remaining life of depreciable property, plant and equipment increased from 2021 to 2022 but then slightly decreased from 2022 to 2023 not reaching 2021 level.

	Dec 31, 2023	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019
Selected Financial Data (US$ in millions)
Accumulated depreciation and amortization	211,402)	202,185)	203,584)	200,436)	203,410)
Property, plant and equipment, gross	339,891)	329,630)	329,488)	327,751)	333,538)
Land	1,377)	1,381)	2,458)	2,571)	2,651)
Asset Age Ratio
Average age¹	62.45%	61.60%	62.25%	61.64%	61.47%

Based on: 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31).

2023 Calculations

¹ Average age = 100 × Accumulated depreciation and amortization ÷ (Property, plant and equipment, gross – Land)
= 100 × 211,402 ÷ (339,891 – 1,377) = 62.45%

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Asset age ratio	Description	The company
Average age	As long as straight-line depreciation is used, this is an accurate estimate of asset age as a percentage of depreciable life. The relative age is a useful measure of whether the company fixed asset base is old or new. Newer assets are likely to be more efficient.	AT&T Inc. average age ratio of depreciable property, plant and equipment improved from 2021 to 2022 but then deteriorated significantly from 2022 to 2023.

	Dec 31, 2023	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019
Selected Financial Data (US$ in millions)
Property, plant and equipment, gross	339,891)	329,630)	329,488)	327,751)	333,538)
Land	1,377)	1,381)	2,458)	2,571)	2,651)
Depreciation expense	18,593)	17,852)	18,629)	20,277)	20,285)
Asset Age Ratio (Years)
Estimated total useful life¹	18	18	18	16	16

Based on: 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31).

2023 Calculations

¹ Estimated total useful life = (Property, plant and equipment, gross – Land) ÷ Depreciation expense
= (339,891 – 1,377) ÷ 18,593 = 18

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Asset age ratio	Description	The company
Estimated total useful life	Over longer time periods, this ratio is a useful measure of company depreciation policy and can be used for comparisons with competitors.	AT&T Inc. estimated total useful life of depreciable property, plant and equipment increased from 2021 to 2022 but then slightly decreased from 2022 to 2023.

	Dec 31, 2023	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019
Selected Financial Data (US$ in millions)
Accumulated depreciation and amortization	211,402)	202,185)	203,584)	200,436)	203,410)
Depreciation expense	18,593)	17,852)	18,629)	20,277)	20,285)
Asset Age Ratio (Years)
Time elapsed since purchase¹	11	11	11	10	10

Based on: 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31).

2023 Calculations

¹ Time elapsed since purchase = Accumulated depreciation and amortization ÷ Depreciation expense
= 211,402 ÷ 18,593 = 11

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Asset age ratio	Description	The company
Estimated time elapsed since purchase	The approximate age in years of a company fixed assets. Useful for comparison purposes.	AT&T Inc. estimated time elapsed since purchase of depreciable property, plant and equipment deteriorated from 2021 to 2022 and from 2022 to 2023.

	Dec 31, 2023	Dec 31, 2022	Dec 31, 2021	Dec 31, 2020	Dec 31, 2019
Selected Financial Data (US$ in millions)
Property, plant and equipment, net	128,489)	127,445)	125,904)	127,315)	130,128)
Land	1,377)	1,381)	2,458)	2,571)	2,651)
Depreciation expense	18,593)	17,852)	18,629)	20,277)	20,285)
Asset Age Ratio (Years)
Estimated remaining life¹	7	7	7	6	6

Based on: 10-K (reporting date: 2023-12-31), 10-K (reporting date: 2022-12-31), 10-K (reporting date: 2021-12-31), 10-K (reporting date: 2020-12-31), 10-K (reporting date: 2019-12-31).

2023 Calculations

¹ Estimated remaining life = (Property, plant and equipment, net – Land) ÷ Depreciation expense
= (128,489 – 1,377) ÷ 18,593 = 7

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Asset age ratio	Description	The company
Estimated remaining life		AT&T Inc. estimated remaining life of depreciable property, plant and equipment increased from 2021 to 2022 but then slightly decreased from 2022 to 2023 not reaching 2021 level.

AT&T Inc. (NYSE:T)

Analysis of Property, Plant and Equipment

Property, Plant and Equipment Disclosure

Asset Age Ratios (Summary)

Average Age

Estimated Total Useful Life

Estimated Age, Time Elapsed since Purchase

Estimated Remaining Life