Business Segment Information - Schedule of Selected Financial Information by Reportable Segment (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) purchaser	Dec. 31, 2023 USD ($) purchaser	Dec. 31, 2022 USD ($) purchaser
Schedule of Segment Reporting Information By Segment [Abstract]
Gains (Losses) on Asset Dispositions, Net	$ 16	$ 95	$ 74
Total	23,698	24,186	25,702
Lease and Well	1,572	1,454	1,331
Gathering, Processing and Transportation Costs	1,722	1,620	1,587
Marketing Costs	5,717	5,709	6,535
Depreciation, Depletion and Amortization	4,108	3,492	3,542
General and Administrative	669	640	570
Taxes Other Than Income	1,249	1,284	1,585
Operating Income (Loss)	8,082	9,603	9,966
Interest Income	277	240	85
Other Income (Expense)	(3)	(6)	29
Interest Expense, Net	138	148	179
Income Before Income Taxes	8,218	9,689	9,901
Additions to Oil and Gas Properties, Excluding Dry Hole Costs	5,448	5,579	4,727
Total Property, Plant and Equipment, Net	34,212	32,297	29,429
Total Assets	47,186	43,857	41,371
Crude Oil and Condensate
Schedule of Segment Reporting Information By Segment [Abstract]
Revenue from contract with customer	13,921	13,748	16,367
Natural Gas Liquids
Schedule of Segment Reporting Information By Segment [Abstract]
Revenue from contract with customer	2,106	1,884	2,648
Natural Gas
Schedule of Segment Reporting Information By Segment [Abstract]
Revenue from contract with customer	1,551	1,744	3,781
Gains (Losses) on Mark-to-Market Financial Commodity and Other Derivative Contracts, Net
Schedule of Segment Reporting Information By Segment [Abstract]
Revenue not from contract with customer	204	818	(3,982)
Gathering, Processing and Marketing
Schedule of Segment Reporting Information By Segment [Abstract]
Revenue from contract with customer	5,800	5,806	6,696
Other, Net
Schedule of Segment Reporting Information By Segment [Abstract]
Revenue not from contract with customer	100	91	118
United States
Schedule of Segment Reporting Information By Segment [Abstract]
Gains (Losses) on Asset Dispositions, Net	21	53	77
Total	23,387	23,916	25,394
Lease and Well	1,532	1,410	1,294
Gathering, Processing and Transportation Costs	1,722	1,620	1,587
Marketing Costs	5,717	5,709	6,535
Depreciation, Depletion and Amortization	3,968	3,414	3,469
General and Administrative	639	618	548
Taxes Other Than Income	1,245	1,278	1,575
Other Segment Items	509	351	506
Operating Income (Loss)	8,055	9,516	9,880
Interest Income	257	223	81
Interest Expense, Net	138	148	179
Additions to Oil and Gas Properties, Excluding Dry Hole Costs	5,213	5,413	4,599
Total Property, Plant and Equipment, Net	33,690	31,876	29,109
Total Assets	$ 45,776	$ 42,674	$ 40,349
Number of significant purchaser | purchaser	3	3	3
First sale with significant purchaser | purchaser	1	1	1
Amount of sales with a single significant purchaser in the United States segment	$ 2,900	$ 3,300	$ 3,300
Amount of sales with a second significant purchaser in the United States segment.	2,600	$ 2,600	3,100
Sales made with second significant purchaser | purchaser		2
Amount of sales with a third significant purchaser in the United States segment.	2,500	$ 2,600	3,000
United States | Crude Oil and Condensate
Schedule of Segment Reporting Information By Segment [Abstract]
Revenue from contract with customer	13,901	13,734	16,349
United States | Natural Gas Liquids
Schedule of Segment Reporting Information By Segment [Abstract]
Revenue from contract with customer	2,106	1,884	2,648
United States | Natural Gas
Schedule of Segment Reporting Information By Segment [Abstract]
Revenue from contract with customer	1,256	1,530	3,489
United States | Gains (Losses) on Mark-to-Market Financial Commodity and Other Derivative Contracts, Net
Schedule of Segment Reporting Information By Segment [Abstract]
Revenue not from contract with customer	204	818	(3,982)
United States | Gathering, Processing and Marketing
Schedule of Segment Reporting Information By Segment [Abstract]
Revenue from contract with customer	5,799	5,806	6,695
United States | Other, Net
Schedule of Segment Reporting Information By Segment [Abstract]
Revenue not from contract with customer	100	91	118
Trinidad
Schedule of Segment Reporting Information By Segment [Abstract]
Gains (Losses) on Asset Dispositions, Net	(5)	42	(4)
Total	311	270	307
Lease and Well	40	43	36
Depreciation, Depletion and Amortization	139	78	73
General and Administrative	15	15	13
Taxes Other Than Income	3	6	10
Other Segment Items	19	4	53
Operating Income (Loss)	95	124	122
Interest Income	15	12	2
Additions to Oil and Gas Properties, Excluding Dry Hole Costs	223	162	122
Total Property, Plant and Equipment, Net	497	404	307
Total Assets	1,220	1,063	879
Trinidad | Crude Oil and Condensate
Schedule of Segment Reporting Information By Segment [Abstract]
Revenue from contract with customer	20	14	18
Trinidad | Natural Gas
Schedule of Segment Reporting Information By Segment [Abstract]
Revenue from contract with customer	295	214	292
Trinidad | Gathering, Processing and Marketing
Schedule of Segment Reporting Information By Segment [Abstract]
Revenue from contract with customer	1		1
Other International
Schedule of Segment Reporting Information By Segment [Abstract]
Gains (Losses) on Asset Dispositions, Net			1
Total			1
Lease and Well		1	1
Depreciation, Depletion and Amortization	1
General and Administrative	15	7	9
Taxes Other Than Income	1
Other Segment Items	51	29	27
Operating Income (Loss)	(68)	(37)	(36)
Interest Income	5	5	2
Additions to Oil and Gas Properties, Excluding Dry Hole Costs	12	4	6
Total Property, Plant and Equipment, Net	25	17	13
Total Assets	190	120	143
Pretax impairment charges	$ 31	$ 18	$ 15