Segment Disclosures and Related Information - Summary of Segment Level Net Income (Loss) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	$ 14,004,000,000	$ 13,620,000,000	$ 30,521,000,000	$ 27,468,000,000
Production and operating expenses	2,572,000,000	2,164,000,000	5,078,000,000	4,179,000,000
Depreciation, depletion and amortization	2,838,000,000	2,334,000,000	5,584,000,000	4,545,000,000
Income tax provision (benefit)	1,046,000,000	1,330,000,000	2,663,000,000	2,587,000,000
Total	6,456,000,000	5,828,000,000	13,325,000,000	11,311,000,000
Equity in earnings of affiliates	(315,000,000)	(403,000,000)	(707,000,000)	(824,000,000)
Interest income	(67,000,000)	(97,000,000)	(143,000,000)	(200,000,000)
Interest and debt expense	232,000,000	198,000,000	437,000,000	403,000,000
Other	5,727,000,000	5,765,000,000	12,789,000,000	11,898,000,000
Total	5,577,000,000	5,463,000,000	12,376,000,000	11,277,000,000
Net Income (Loss)	1,971,000,000	2,329,000,000	4,820,000,000	4,880,000,000
Operating Segments And Corporate Nonsegment
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	14,500,000,000	14,239,000,000	31,572,000,000	28,606,000,000
Intersegment eliminations
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	(496,000,000)	(619,000,000)	(1,051,000,000)	(1,138,000,000)
Alaska
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	1,315,000,000	1,783,000,000	2,925,000,000	3,453,000,000
Production and operating expenses	546,000,000	490,000,000	1,052,000,000	969,000,000
Depreciation, depletion and amortization	361,000,000	321,000,000	716,000,000	645,000,000
Income tax provision (benefit)	47,000,000	135,000,000	186,000,000	257,000,000
Total	954,000,000	946,000,000	1,954,000,000	1,871,000,000
Equity in earnings of affiliates	0	0	0	0
Interest income	0	0	0	0
Interest and debt expense	0	0	0	0
Other	226,000,000	477,000,000	509,000,000	876,000,000
Total	226,000,000	477,000,000	509,000,000	876,000,000
Net Income (Loss)	135,000,000	360,000,000	462,000,000	706,000,000
Alaska \| Operating Segments
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	1,315,000,000	1,783,000,000	2,925,000,000	3,453,000,000
Alaska \| Intersegment eliminations
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	0	0	0	0
L48
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	9,963,000,000	9,053,000,000	21,511,000,000	18,361,000,000
Production and operating expenses	1,474,000,000	1,158,000,000	2,965,000,000	2,240,000,000
Depreciation, depletion and amortization	2,003,000,000	1,557,000,000	3,907,000,000	2,989,000,000
Income tax provision (benefit)	382,000,000	367,000,000	830,000,000	752,000,000
Total	3,859,000,000	3,082,000,000	7,702,000,000	5,981,000,000
Equity in earnings of affiliates	(4,000,000)	0	(8,000,000)	0
Interest income	0	0	0	0
Interest and debt expense	0	0	0	0
Other	4,709,000,000	4,712,000,000	10,628,000,000	9,740,000,000
Total	4,705,000,000	4,712,000,000	10,620,000,000	9,740,000,000
Net Income (Loss)	1,399,000,000	1,259,000,000	3,189,000,000	2,640,000,000
L48 \| Operating Segments
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	9,966,000,000	9,053,000,000	21,514,000,000	18,362,000,000
L48 \| Intersegment eliminations
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	(3,000,000)	0	(3,000,000)	(1,000,000)
Canada
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	848,000,000	941,000,000	1,833,000,000	1,877,000,000
Production and operating expenses	216,000,000	223,000,000	417,000,000	440,000,000
Depreciation, depletion and amortization	143,000,000	166,000,000	274,000,000	324,000,000
Income tax provision (benefit)	50,000,000	86,000,000	131,000,000	142,000,000
Total	409,000,000	475,000,000	822,000,000	906,000,000
Equity in earnings of affiliates	0	0	0	0
Interest income	0	0	0	0
Interest and debt expense	0	0	0	0
Other	290,000,000	205,000,000	606,000,000	530,000,000
Total	290,000,000	205,000,000	606,000,000	530,000,000
Net Income (Loss)	149,000,000	261,000,000	405,000,000	441,000,000
Canada \| Operating Segments
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	1,334,000,000	1,553,000,000	2,866,000,000	2,997,000,000
Canada \| Intersegment eliminations
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	(486,000,000)	(612,000,000)	(1,033,000,000)	(1,120,000,000)
EMENA
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	1,400,000,000	1,296,000,000	3,340,000,000	2,753,000,000
Production and operating expenses	232,000,000	162,000,000	456,000,000	317,000,000
Depreciation, depletion and amortization	198,000,000	175,000,000	417,000,000	355,000,000
Income tax provision (benefit)	593,000,000	666,000,000	1,515,000,000	1,443,000,000
Total	1,023,000,000	1,003,000,000	2,388,000,000	2,115,000,000
Equity in earnings of affiliates	(115,000,000)	(137,000,000)	(288,000,000)	(277,000,000)
Interest income	0	0	0	0
Interest and debt expense	0	0	0	0
Other	255,000,000	179,000,000	584,000,000	360,000,000
Total	140,000,000	42,000,000	296,000,000	83,000,000
Net Income (Loss)	237,000,000	251,000,000	656,000,000	555,000,000
EMENA \| Operating Segments
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	1,400,000,000	1,296,000,000	3,340,000,000	2,753,000,000
EMENA \| Intersegment eliminations
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	0	0	0	0
AP
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	471,000,000	543,000,000	895,000,000	1,017,000,000
Production and operating expenses	85,000,000	92,000,000	150,000,000	171,000,000
Depreciation, depletion and amortization	118,000,000	107,000,000	237,000,000	217,000,000
Income tax provision (benefit)	67,000,000	95,000,000	131,000,000	100,000,000
Total	270,000,000	294,000,000	518,000,000	488,000,000
Equity in earnings of affiliates	(185,000,000)	(268,000,000)	(391,000,000)	(550,000,000)
Interest income	(2,000,000)	(2,000,000)	(4,000,000)	(4,000,000)
Interest and debt expense	0	0	0	0
Other	58,000,000	75,000,000	131,000,000	127,000,000
Total	(129,000,000)	(195,000,000)	(264,000,000)	(427,000,000)
Net Income (Loss)	330,000,000	444,000,000	641,000,000	956,000,000
AP \| Operating Segments
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	471,000,000	543,000,000	895,000,000	1,017,000,000
AP \| Intersegment eliminations
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	0	0	0	0
OI
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	0	0	0	0
Production and operating expenses	0	0	0	0
Depreciation, depletion and amortization	0	0	0	0
Income tax provision (benefit)	0	0	0	0
Total	0	0	0	0
Equity in earnings of affiliates	0	0	0	0
Interest income	0	0	0	0
Interest and debt expense	0	0	0	0
Other	(1,000,000)	(3,000,000)	(3,000,000)	(2,000,000)
Total	(1,000,000)	(3,000,000)	(3,000,000)	(2,000,000)
Net Income (Loss)	1,000,000	3,000,000	3,000,000	2,000,000
OI \| Operating Segments
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	0	0	0	0
OI \| Intersegment eliminations
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	0	0	0	0
Corporate
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	7,000,000	4,000,000	17,000,000	7,000,000
Production and operating expenses	19,000,000	39,000,000	38,000,000	42,000,000
Depreciation, depletion and amortization	15,000,000	8,000,000	33,000,000	15,000,000
Income tax provision (benefit)	(93,000,000)	(19,000,000)	(130,000,000)	(107,000,000)
Total	(59,000,000)	28,000,000	(59,000,000)	(50,000,000)
Equity in earnings of affiliates	(11,000,000)	2,000,000	(20,000,000)	3,000,000
Interest income	(65,000,000)	(95,000,000)	(139,000,000)	(196,000,000)
Interest and debt expense	232,000,000	198,000,000	437,000,000	403,000,000
Other	190,000,000	120,000,000	334,000,000	267,000,000
Total	346,000,000	225,000,000	612,000,000	477,000,000
Net Income (Loss)	(280,000,000)	(249,000,000)	(536,000,000)	(420,000,000)
Corporate \| Corporate
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	14,000,000	11,000,000	32,000,000	24,000,000
Corporate \| Intersegment eliminations
Segment Reporting Information [Line Items]
Consolidated sales and other operating revenues	$ (7,000,000)	$ (7,000,000)	$ (15,000,000)	$ (17,000,000)

CONOCOPHILLIPS 10-Q