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Property, Plant and Equpment (Tables) | 12 Months Ended
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Dec. 31, 2016
Property, Plant and Equipment [Abstract] |
Property, plant and equipment | TDS’ Property, plant and equipment in service and under construction, and related accumulated depreciation and amortization, as of December 31, 2016 and 2015 were as follows:
| Useful Lives |  |  |  |  |  |
December 31, | (Years) |  | 2016 |  | 2015
(Dollars in millions) |  |  |  |  |  |  |
Land | N/A |  | $ | 54 |  | $ | 55
Buildings | 5-40 |  |  | 511 |  |  | 506
Leasehold and land improvements | 1-30 |  |  | 1,188 |  |  | 1,137
Cable and wire | 15-35 |  |  | 1,740 |  |  | 1,689
Network and switching equipment | 3-13 |  |  | 2,348 |  |  | 2,279
Cell site equipment | 7-25 |  |  | 3,383 |  |  | 3,383
Office furniture and equipment | 3-10 |  |  | 508 |  |  | 587
Other operating assets and equipment | 3-12 |  |  | 187 |  |  | 205
System development | 1-7 |  |  | 1,523 |  |  | 1,459
Work in process | N/A |  |  | 237 |  |  | 220
Total property, plant and equipment, gross |  |  |  | 11,679 |  |  | 11,520
Accumulated depreciation and amortization |  |  |  | (8,124) |  |  | (7,756)
Total property, plant and equipment, net |  |  | $ | 3,555 |  | $ | 3,764

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- 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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