v3.26.3
Debt (Secured Tower Revenue Securities) (Narrative) (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Debt Instrument [Line Items]      
Repayment of tower securities $ 750,000 $ 1,165,000  
Amount Outstanding 12,975,000   $ 12,959,750
2020-1C Tower Securities [Member]      
Debt Instrument [Line Items]      
Repayment of tower securities 750,000    
Amount Outstanding     $ 750,000
2020-2R Tower Securities [Member]      
Debt Instrument [Line Items]      
Repayment of tower securities 39,500    
Amount Outstanding $ 31,600