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Acquisitions (Narrative) (Details)
$ in Millions
 1 Months Ended 6 Months Ended
Aug. 07, 2025
USD ($)
item
site
Jun. 30, 2025
USD ($)
site
item
Jun. 30, 2024
item
Dec. 31, 2024
USD ($)
Business Acquisition [Line Items]        
Performance targets, maximum potential obligation | $   $ 40.1   $ 12.1
Other Acquisitions [Member]        
Business Acquisition [Line Items]        
Number of towers acquired | item   4,673    
Number of communication sites acquired | item     128  
Millicom [Member]        
Business Acquisition [Line Items]        
Number of communication sites acquired | site   4,644    
Subsequent Event [Member] | Other Acquisitions [Member]        
Business Acquisition [Line Items]        
Number of communication sites acquired | item 13      
Cash paid for acquisition | $ $ 5.5      
Subsequent Event [Member] | Millicom [Member]        
Business Acquisition [Line Items]        
Number of sites to be purchased | site 2,500      
Cash paid for acquisition | $ $ 391.0