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Property, Plant and Equipment | 9 Months Ended
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Sep. 30, 2025
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | Note 6—Property, Plant and Equipment Net property, plant and equipment is composed of the following:
| Depreciable Lives |  | September 30, 2025 |  | December 31, 2024
|  |  | (Dollars in millions)
Land | N/A |  | $ | 328 |  |  | 329 |
Fiber, conduit and other outside plant(1) | 15-45 years |  | 7,300 |  |  | 8,246 |
Central office and other network electronics(2) | 7-10 years |  | 5,506 |  |  | 5,792 |
Support assets(3) | 3-30 years |  | 2,869 |  |  | 2,878 |
Construction in progress(4) | N/A |  | 298 |  |  | 530 |
Gross property, plant and equipment |  |  | 16,301 |  |  | 17,775 |
Accumulated depreciation |  |  | (8,789) |  |  | (8,910) |
Net property, plant and equipment |  |  | $ | 7,512 |  |  | 8,865 |
_______________________________________________________________________________ (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, 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. As of September 30, 2025, we classified certain property, plant and equipment, net as held for sale and discontinued recording depreciation on the disposal group. See Note 2—Planned Divestiture of the Lumen Mass Markets Fiber-to-the-Home Business. We recorded depreciation expense of $154 million and $502 million, respectively, for the three and nine months ended September 30, 2025 and $179 million and $528 million, respectively, for the three and nine months ended September 30, 2024.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-7 + Details
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