v3.25.2
Debt and Other Obligations Extinguishment of Debt (Details) - Securitized Debt [Member] - 2015 Tower Revenue Notes 3.663% due 2045 [Member]
$ in Millions
6 Months Ended
Jun. 30, 2025
USD ($)
Extinguishment of Debt [Line Items]  
Extinguishment of Debt, Amount $ 700
Repayments of Other Long-Term Debt 700 [1]
Gains (losses) on retirement of long-term obligations $ 0
[1] Exclusive of accrued interest.