| Summary of Plant, Property and Equipment |
The following table displays the details of Property, plant and equipment, which is stated at cost: | | | | | | | | | | | | | | | | | | | | | (dollars in millions) | | At December 31, | Lives (years) | | 2025 | | 2024 | | Land | - | | $ | 743 | | | $ | 740 | | | Buildings and equipment | 7 to 45 | | 40,872 | | | 39,130 | | | Central office and other network equipment | 3 to 15 | | 180,506 | | | 176,680 | | | Antennas, cable, conduit, poles and towers | 4 to 50 | | 86,221 | | | 82,810 | | | Leasehold improvements | 5 to 20 | | 11,099 | | | 10,562 | | | Work in progress | - | | 8,493 | | | 9,424 | | | Furniture, vehicles and other | 3 to 20 | | 10,057 | | | 12,060 | | | | | 337,991 | | | 331,406 | | | Less accumulated depreciation | | | 228,524 | | | 222,884 | | | Property, plant and equipment, net | | | $ | 109,467 | | | $ | 108,522 | |
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