v3.20.4
Property, Plant And Equipment (Tables)
12 Months Ended
Dec. 31, 2020
Property, Plant and Equipment [Abstract]  
Schedule of Property, Plant and Equipment
Property, plant and equipment is summarized as follows at December 31:
Lives (years)
20202019
Land-$2,571 $2,651 
Buildings and improvements
2-44
39,418 38,924 
Central office equipment1
3-10
95,981 96,061 
Cable, wiring and conduit
15-50
75,409 72,042 
Satellites
14-17
908 2,489 
Other equipment
3-20
90,883 94,951 
Software
3-7
18,482 22,244 
Under construction-4,099 4,176 
327,751 333,538 
Accumulated depreciation and amortization200,436 203,410 
Property, plant and equipment - net$127,315 $130,128 
1Includes certain network software.