Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Investment in partnerships	$ 436	$ 523
Net operating losses	784	716
Derivative instruments	19	0
Lease liabilities	46	40
Other	43	45
Total deferred tax assets	1,328	1,324
Deferred tax liabilities:
Property and equipment in excess of tax values	(525)	(573)
Derivative instruments	0	(6)
Lease assets	(44)	(38)
Other	(3)	(3)
Total deferred tax liabilities	(572)	(620)
Net deferred tax assets	756	704
Deferred tax asset	1,220	1,239
Other long-term assets, net
Deferred tax liabilities:
Deferred tax asset	1,220	1,239
Other long-term liabilities and deferred credits
Deferred tax liabilities:
Other long-term liabilities and deferred credits	$ (464)	$ (535)