v3.26.1
Contingencies and Guaranty - Schedule of Spectrum Sale Agreements (Details) - Wireless Licenses
$ in Millions
1 Months Ended 12 Months Ended 15 Months Ended 22 Months Ended 36 Months Ended 62 Months Ended
Jan. 31, 2025
USD ($)
Jun. 30, 2024
USD ($)
Apr. 30, 2023
USD ($)
Feb. 28, 2021
USD ($)
Mar. 31, 2026
USD ($)
license
Mar. 31, 2025
USD ($)
Mar. 31, 2026
USD ($)
Mar. 31, 2026
USD ($)
license
Mar. 31, 2026
USD ($)
license
Mar. 31, 2026
USD ($)
license
SDG&E                    
Other Commitments [Line Items]                    
Total Consideration       $ 50.0            
Payments Received                   $ 45.6
Payments remaining         $ 3.1   $ 3.1 $ 3.1 $ 3.1 $ 3.1
Broadband license(s) delivered | license                   2
Broadband license(s) remaining | license         1          
LCRA Agreement                    
Other Commitments [Line Items]                    
Total Consideration     $ 30.0              
Payments Received                 29.3  
Payments remaining         $ 0.7   0.7 0.7 $ 0.7 $ 0.7
Broadband license(s) delivered | license                 64  
Broadband license(s) remaining | license         4          
LCRA Expansion Agreement                    
Other Commitments [Line Items]                    
Total Consideration $ 13.5                  
Payments Received             6.0      
Payments remaining         $ 6.5   6.5 6.5 $ 6.5 6.5
Broadband license(s) remaining | license         34          
Customer credit         $ 1.0   1.0 1.0 1.0 1.0
Oncor                    
Other Commitments [Line Items]                    
Total Consideration   $ 102.5                
Payments Received               100.6    
Payments remaining         0.0   $ 0.0 $ 0.0 $ 0.0 $ 0.0
Broadband license(s) delivered | license               95    
Reimbursable clearing costs and anti windfall payments         6.0 $ 2.9   $ 7.5    
Realized clearing costs and anti-windfall payments         $ 5.6