XML 84 R45.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Property, Plant and Equipment (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
Property, Plant and Equipment [Abstract] |
Schedule of net property, plant and equipment | Net property, plant and equipment is composed of the following:
| Depreciable Lives |  | As of December 31,
|  | 2024 |  | 2023
|  |  | (Dollars in millions)
Land | N/A |  | $ | 630 |  |  | 646 |
Fiber, conduit and other outside plant (1) | 15-45 years |  | 17,348 |  |  | 15,217 |
Central office and other network electronics(2) | 3-10 years |  | 16,616 |  |  | 15,741 |
Support assets(3) | 3-30 years |  | 6,804 |  |  | 6,714 |
Construction in progress(4) | N/A |  | 2,144 |  |  | 2,758 |
Gross property, plant and equipment |  |  | 43,542 |  |  | 41,076 |
Accumulated depreciation |  |  | (23,121) |  |  | (21,318) |
Net property, plant and equipment |  |  | $ | 20,421 |  |  | 19,758 |
_______________________________________________________________________________ (1)Fiber, conduit and other outside plant consists of fiber and metallic cable, conduit, poles and other supporting structures. (2)Central office and other network electronics consists of circuit and packet switches, routers, transmission electronics and electronics providing service to customers. (3)Support assets consist of buildings, data centers, computers and other administrative and support equipment. (4)Construction in progress includes inventory held for construction and property of the aforementioned categories that has not been placed in service as it is still under construction.
Schedule of changes to asset retirement obligations | The following table provides asset retirement obligation activity:
| Years Ended December 31,
| 2024 |  | 2023
| (Dollars in millions)
Balance at beginning of period | $ | 157 |  |  | 156 |
Accretion expense | 12 |  |  | 6 |
Liabilities settled | (12) |  |  | (9) |
Change in estimate | — |  |  | 4 |
Balance at end of period | $ | 157 |  |  | 157 |

X
- References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 + Details
Name: | us-gaap_PropertyPlantAndEquipmentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 + Details
Name: | us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration