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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2023
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, 2023 and 2022, were as follows:
December 31,Useful Lives (Years)20232022
(Dollars in millions)   
LandN/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 processN/A653 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