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Segment Disclosures and Related Information - Summary of Segment Level Net Income (Loss) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Sales and other operating revenues	$ 54,745,000,000	$ 56,141,000,000	$ 78,494,000,000
Production and operating expenses	8,751,000,000	7,693,000,000	7,006,000,000
Depreciation, depletion and amortization	9,599,000,000	8,270,000,000	7,504,000,000
Income tax provision (benefit)	4,427,000,000	5,331,000,000	9,548,000,000
Total	22,777,000,000	21,294,000,000	24,058,000,000
Equity in earnings of affiliates	(1,705,000,000)	(1,720,000,000)	(2,081,000,000)
Interest income	(402,000,000)	(412,000,000)	(195,000,000)
Interest and debt expense	783,000,000	780,000,000	805,000,000
Other	24,047,000,000	25,242,000,000	37,227,000,000
Total	22,723,000,000	23,890,000,000	35,756,000,000
Net Income (Loss)	9,245,000,000	10,957,000,000	18,680,000,000
Pipeline Company
Segment Reporting Information [Line Items]
Sales and other operating revenues	6,700,000,000	5,800,000,000
Operating Segments And Corporate Nonsegment
Segment Reporting Information [Line Items]
Sales and other operating revenues	56,906,000,000	58,045,000,000	80,984,000,000
Intersegment eliminations
Segment Reporting Information [Line Items]
Sales and other operating revenues	(2,161,000,000)	(1,904,000,000)	(2,490,000,000)
Alaska
Segment Reporting Information [Line Items]
Sales and other operating revenues	6,553,000,000	7,098,000,000	7,905,000,000
Production and operating expenses	1,951,000,000	1,829,000,000	1,703,000,000
Depreciation, depletion and amortization	1,299,000,000	1,061,000,000	939,000,000
Income tax provision (benefit)	480,000,000	642,000,000	885,000,000
Total	3,730,000,000	3,532,000,000	3,527,000,000
Equity in earnings of affiliates	1,000,000	(1,000,000)	(4,000,000)
Interest income	0	0	0
Interest and debt expense	0	0	0
Other	1,496,000,000	1,789,000,000	2,030,000,000
Total	1,497,000,000	1,788,000,000	2,026,000,000
Net Income (Loss)	1,326,000,000	1,778,000,000	2,352,000,000
Alaska | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	6,553,000,000	7,098,000,000	7,905,000,000
Alaska | Intersegment eliminations
Segment Reporting Information [Line Items]
Sales and other operating revenues	0	0	0
Lower 48
Segment Reporting Information [Line Items]
Sales and other operating revenues	37,026,000,000	38,237,000,000	52,903,000,000
Production and operating expenses	4,751,000,000	4,199,000,000	3,627,000,000
Depreciation, depletion and amortization	6,442,000,000	5,722,000,000	4,865,000,000
Income tax provision (benefit)	1,462,000,000	1,763,000,000	3,088,000,000
Total	12,655,000,000	11,684,000,000	11,580,000,000
Equity in earnings of affiliates	(5,000,000)	9,000,000	14,000,000
Interest income	0	0	0
Interest and debt expense	0	0	0
Other	19,201,000,000	20,083,000,000	30,294,000,000
Total	19,196,000,000	20,092,000,000	30,308,000,000
Net Income (Loss)	$ 5,175,000,000	$ 6,461,000,000	11,015,000,000
Lower 48 | Pipeline Company | Revenue Benchmark | Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	12.00%	10.00%
Lower 48 | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	$ 37,028,000,000	$ 38,244,000,000	52,921,000,000
Lower 48 | Intersegment eliminations
Segment Reporting Information [Line Items]
Sales and other operating revenues	(2,000,000)	(7,000,000)	(18,000,000)
Canada
Segment Reporting Information [Line Items]
Sales and other operating revenues	3,514,000,000	3,006,000,000	3,714,000,000
Production and operating expenses	902,000,000	619,000,000	591,000,000
Depreciation, depletion and amortization	639,000,000	420,000,000	402,000,000
Income tax provision (benefit)	228,000,000	26,000,000	206,000,000
Total	1,769,000,000	1,065,000,000	1,199,000,000
Equity in earnings of affiliates	0	0	0
Interest income	0	0	0
Interest and debt expense	0	0	0
Other	1,033,000,000	1,539,000,000	1,801,000,000
Total	1,033,000,000	1,539,000,000	1,801,000,000
Net Income (Loss)	712,000,000	402,000,000	714,000,000
Canada | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	5,636,000,000	4,873,000,000	6,159,000,000
Canada | Intersegment eliminations
Segment Reporting Information [Line Items]
Sales and other operating revenues	(2,122,000,000)	(1,867,000,000)	(2,445,000,000)
Europe, Middle East and North Africa
Segment Reporting Information [Line Items]
Sales and other operating revenues	5,788,000,000	5,854,000,000	11,270,000,000
Production and operating expenses	671,000,000	593,000,000	590,000,000
Depreciation, depletion and amortization	761,000,000	587,000,000	736,000,000
Income tax provision (benefit)	2,854,000,000	3,065,000,000	5,445,000,000
Total	4,286,000,000	4,245,000,000	6,771,000,000
Equity in earnings of affiliates	(586,000,000)	(580,000,000)	(780,000,000)
Interest income	0	(1,000,000)	(1,000,000)
Interest and debt expense	0	0	0
Other	899,000,000	1,001,000,000	3,036,000,000
Total	313,000,000	420,000,000	2,255,000,000
Net Income (Loss)	1,189,000,000	1,189,000,000	2,244,000,000
Europe, Middle East and North Africa | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	5,788,000,000	5,854,000,000	11,271,000,000
Europe, Middle East and North Africa | Intersegment eliminations
Segment Reporting Information [Line Items]
Sales and other operating revenues	0	0	(1,000,000)
Asia Pacific
Segment Reporting Information [Line Items]
Sales and other operating revenues	1,847,000,000	1,913,000,000	2,606,000,000
Production and operating expenses	384,000,000	391,000,000	365,000,000
Depreciation, depletion and amortization	425,000,000	455,000,000	518,000,000
Income tax provision (benefit)	211,000,000	42,000,000	480,000,000
Total	1,020,000,000	888,000,000	1,363,000,000
Equity in earnings of affiliates	(1,089,000,000)	(1,151,000,000)	(1,310,000,000)
Interest income	(8,000,000)	(8,000,000)	(9,000,000)
Interest and debt expense	0	0	0
Other	200,000,000	223,000,000	(174,000,000)
Total	(897,000,000)	(936,000,000)	(1,493,000,000)
Net Income (Loss)	1,724,000,000	1,961,000,000	2,736,000,000
Asia Pacific | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	1,847,000,000	1,913,000,000	2,606,000,000
Asia Pacific | Intersegment eliminations
Segment Reporting Information [Line Items]
Sales and other operating revenues	0	0	0
Other International
Segment Reporting Information [Line Items]
Sales and other operating revenues	0	0	0
Production and operating expenses	0	1,000,000	0
Depreciation, depletion and amortization	0	0	0
Income tax provision (benefit)	(1,000,000)	0	53,000,000
Total	(1,000,000)	1,000,000	53,000,000
Equity in earnings of affiliates	0	0	(1,000,000)
Interest income	0	0	0
Interest and debt expense	0	0	0
Other	2,000,000	12,000,000	(1,000,000)
Total	2,000,000	12,000,000	(2,000,000)
Net Income (Loss)	(1,000,000)	(13,000,000)	(51,000,000)
Other International | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	0	0	0
Other International | Intersegment eliminations
Segment Reporting Information [Line Items]
Sales and other operating revenues	0	0	0
Corporate
Segment Reporting Information [Line Items]
Sales and other operating revenues	17,000,000	33,000,000	96,000,000
Production and operating expenses	92,000,000	61,000,000	130,000,000
Depreciation, depletion and amortization	33,000,000	25,000,000	44,000,000
Income tax provision (benefit)	(807,000,000)	(207,000,000)	(609,000,000)
Total	(682,000,000)	(121,000,000)	(435,000,000)
Equity in earnings of affiliates	(26,000,000)	3,000,000	0
Interest income	(394,000,000)	(403,000,000)	(185,000,000)
Interest and debt expense	783,000,000	780,000,000	805,000,000
Other	1,216,000,000	595,000,000	241,000,000
Total	1,579,000,000	975,000,000	861,000,000
Net Income (Loss)	(880,000,000)	(821,000,000)	(330,000,000)
Corporate | Corporate
Segment Reporting Information [Line Items]
Sales and other operating revenues	54,000,000	63,000,000	122,000,000
Corporate | Intersegment eliminations
Segment Reporting Information [Line Items]
Sales and other operating revenues	$ (37,000,000)	$ (30,000,000)	$ (26,000,000)

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