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Property, Plant and Equipment | 12 Months Ended
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Dec. 31, 2023
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | Note 9 Property, Plant and Equipment TDS’ Property, plant and equipment in service and under construction, and related accumulated depreciation and amortization, as of December 31, 2023 and 2022, were as follows:
December 31, | Useful Lives (Years) |  | 2023 |  | 2022
(Dollars in millions) |  |  |  |  |
Land | N/A |  | $ | 67 |  |  | $ | 63 |
Buildings | 5-40 |  | 542 |  |  | 532 |
Leasehold and land improvements | 1-30 |  | 1,598 |  |  | 1,538 |
Cable and wire | 15-40 |  | 2,928 |  |  | 2,609 |
Network and switching equipment | 3-10 |  | 2,717 |  |  | 2,706 |
Cell site equipment | 7-30 |  | 4,381 |  |  | 4,248 |
Office furniture and equipment | 3-10 |  | 272 |  |  | 296 |
Other operating assets and equipment | 1-12 |  | 240 |  |  | 200 |
System development | 1-7 |  | 2,214 |  |  | 2,070 |
Work in process | N/A |  | 653 |  |  | 709 |
Total property, plant and equipment, gross |  |  | 15,612 |  |  | 14,971 |
Accumulated depreciation and amortization |  |  | (10,550) |  |  | (10,211) |
Total property, plant and equipment, net |  |  | $ | 5,062 |  |  | $ | 4,760 |
Depreciation and amortization expense totaled $865 million, $882 million and $851 million in 2023, 2022 and 2021, respectively.

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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//1943274/2147480321/958-360-50-6 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//1943274/2147480321/958-360-50-1 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//1943274/2147480321/958-360-50-7 + Details
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