Affiliate Transactions - Affiliate Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Related Party Transaction [Line Items]
Total revenue	$ 1,161	$ 1,363	$ 3,589	$ 4,144
Affiliates
Related Party Transaction [Line Items]
Total revenue	477	570	1,441	1,676
Affiliates | Direct affiliate revenue
Related Party Transaction [Line Items]
Total revenue	325	423	1,011	1,241
Affiliates | Allocated affiliate revenue
Related Party Transaction [Line Items]
Total revenue	$ 152	$ 147	$ 430	$ 435