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Affiliate Transactions (Tables)
 9 Months Ended
Sep. 30, 2025
Related Party Transactions [Abstract]  
Schedule of Affiliate Revenue
The following table provides details of our affiliate revenue:

Three Months Ended September 30,Nine Months Ended September 30,
2025202420252024
 (Dollars in millions)
Direct affiliate revenue
$325 423 1,011 1,241 
Allocated affiliate revenue
152 147 430 435 
Total operating revenue—affiliates
$477 570 1,441 1,676