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Property, Plant and Equipment (Table)
12 Months Ended
Dec. 31, 2013
Disclosure Text Block  
Property, plant and equipment
December 31,Useful Lives (Years) 2013 2012
(Dollars in thousands)       
Land N/A $ 36,266 $ 33,947
Buildings 20   304,272   341,852
Leasehold and land improvements 1-30   1,197,520   1,188,720
Cell site equipment 6-25   3,306,575   3,100,916
Switching equipment 1-8   1,161,976   1,155,114
Office furniture and equipment 3-5   539,248   535,656
Other operating assets and equipment 5-25   92,456   128,290
System development 3-7   962,698   631,184
Work in process N/A   116,501   362,749
     7,717,512   7,478,428
Accumulated depreciation and amortization    (4,860,992)   (4,455,840)
    $ 2,856,520 $ 3,022,588