Revenue Recognition - Operating Revenues by Principal Geographic Region (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 906	$ 630	$ 2,420	$ 1,451
Domestic
Disaggregation of Revenue [Line Items]
Total operating revenues	832	595	2,197	1,376
Latin America
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 74	$ 35	$ 223	$ 75