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Acquisitions and Divestitures - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Jul. 14, 2025
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Licenses   $ 1,650,288   $ 1,650,288   $ 3,289,648
Expenses related to strategic alternatives review   4,100 $ 1,500 6,200 $ 31,100  
Gain on sale of business and other exit costs, net   (2,844) 11,733 6,032 11,733  
Income tax expense (benefit)   72,772 30,656 85,119 36,795  
Equity in earnings of unconsolidated entities   69,838 $ 43,415 149,309 125,117  
Distributions from unconsolidated entities       149,732 $ 106,458  
Non-current assets held for sale   1,617,872   1,617,872   12
Equity method investments            
Equity in earnings of unconsolidated entities   34,100        
Distributions from unconsolidated entities       42,500    
Call Option            
Business divestiture agreement amount   86,400   86,400    
Licenses   86,500   86,500    
Array | Verizon License Purchase Agreement            
License sale agreement amount           1,000,000
Licenses   588,800   588,800    
Array | AT&T License Purchase Agreement            
License sale agreement amount           1,018,000
Licenses   861,000   861,000    
Array | T-Mobile License Purchase Agreement            
License sale agreement amount           85,000
Licenses   64,300   64,300    
Non-current assets held for sale   53,100   53,100    
Array | Put/Call Agreement            
Business divestiture agreement amount           106,000
TDS Telecom | Colorado incumbent markets            
Business divestiture agreement amount   18,500   18,500    
Gain on sale of business and other exit costs, net       6,800    
TDS Telecom | Oklahoma incumbent markets            
Business divestiture agreement amount   $ 43,000   43,000    
Array            
Gain on sale of business and other exit costs, net       47,700    
Array | King Street Wireless and Sunshine Spectrum            
Purchase price $ 16,700         $ 9,400
Purchase price paid at time of close $ 7,300          
Income tax expense (benefit)       $ (47,600)