Segment Information - Schedule of Selected Financial Information by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Selected Information [Line Items]
Operating Revenues and Other	$ 7,593	$ 4,765	$ 18,983	$ 12,598
Operating Income (Loss)	3,664	1,471	7,113	3,574
Other Income, Net	40	6	66	0
Interest Expense, Net	(41)	(48)	(137)	(140)
Income Before Income Taxes	3,663	1,429	7,042	3,434
Operating Segments
Selected Information [Line Items]
Operating Revenues and Other	7,593	4,765	18,983	12,598
Operating Income (Loss)	3,664	1,471	7,113	3,574
Segment Reconciling Items
Selected Information [Line Items]
Other Income, Net	40	6	66	0
Interest Expense, Net	(41)	(48)	(137)	(140)
United States | Operating Segments
Selected Information [Line Items]
Operating Revenues and Other	7,481	4,692	18,733	12,293
Operating Income (Loss)	3,606	1,455	7,010	3,422
Trinidad | Operating Segments
Selected Information [Line Items]
Operating Revenues and Other	111	72	249	229
Operating Income (Loss)	73	37	132	121
Other International
Selected Information [Line Items]
Pretax Impairment Charges for Proved Oil and Gas Properties and Other Property, Plant and Equipment	10	13	12	15
Other International | Operating Segments
Selected Information [Line Items]
Operating Revenues and Other	1	1	1	76
Operating Income (Loss)	$ (15)	$ (21)	$ (29)	$ 31