Long-Term Debt and Note Payable - Affiliate - Interest Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Amount of gross interest expense, net of capitalized interest and interest expense - affiliates
Gross interest expense	$ 200	$ 308	$ 407
Capitalized interest	(19)	(29)	(27)
Total interest expense	181	279	380
Interest expense-affiliates, net	$ 105	$ 74	$ 62