Related Party Transactions - Schedule of Significant Transactions with Related Parties (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Significant Transactions with Equity Affiliates
Operating revenues and other income	$ 21	$ 22	$ 64	$ 63
Purchases	0	1	1	5
Operating expenses and selling, general and administrative expenses	55	45	145	135
Net interest (income) expense	$ 0	$ 0	$ (1)	$ (2)