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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2024
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, 2024 and 2023, were as follows:
December 31,Useful Lives (Years)20242023
(Dollars in millions)   
LandN/A$65 $67 
Buildings
15-40
420 542 
Leasehold and land improvements
1-30
1,651 1,598 
Cable and wire
15-40
3,191 2,928 
Network and switching equipment
1-10
2,241 2,717 
Cell site equipment
7-30
3,492 4,381 
Office furniture and equipment
3-10
242 272 
Other operating assets and equipment
1-12
240 240 
System development
1-7
2,267 2,214 
Work in processN/A554 653 
Total property, plant and equipment, gross 14,363 15,612 
Accumulated depreciation and amortization (9,369)(10,550)
Total property, plant and equipment, net $4,994 $5,062