v3.26.3
Segment Disclosures and Related Information - Summary of Segment Level Net Income (Loss) (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues $ 19,435,000,000 $ 15,031,000,000 $ 54,357,000,000 $ 45,552,000,000
Production and operating expenses 2,440,000,000 2,632,000,000 7,147,000,000 7,710,000,000
Depreciation, depletion and amortization 3,005,000,000 2,917,000,000 8,894,000,000 8,501,000,000
Income tax provision (benefit) 1,981,000,000 1,202,000,000 5,312,000,000 3,865,000,000
Total 7,426,000,000 6,751,000,000 21,353,000,000 20,076,000,000
Equity in earnings of affiliates (448,000,000) (345,000,000) (934,000,000) (1,052,000,000)
Interest income (104,000,000) (62,000,000) (293,000,000) (205,000,000)
Interest and debt expense 142,000,000 223,000,000 522,000,000 660,000,000
Other 8,418,000,000 6,738,000,000 23,594,000,000 19,527,000,000
Total 8,008,000,000 6,554,000,000 22,889,000,000 18,930,000,000
Net income (loss) 4,001,000,000 1,726,000,000 10,115,000,000 6,546,000,000
Physical contracts meeting the definition of a derivative        
Segment Reporting [Line Items]        
Revenue from contracts outside the scope of ASC Topic 606 2,234,000,000 1,758,000,000 5,381,000,000 5,173,000,000
Operating Segments And Corporate Nonsegment        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 20,105,000,000 15,515,000,000 56,331,000,000 47,087,000,000
Intersegment eliminations        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues (670,000,000) (484,000,000) (1,974,000,000) (1,535,000,000)
Segment Totals        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 19,428,000,000 15,015,000,000 54,331,000,000 45,519,000,000
Production and operating expenses 2,409,000,000 2,530,000,000 7,108,000,000 7,570,000,000
Depreciation, depletion and amortization 2,996,000,000 2,906,000,000 8,867,000,000 8,457,000,000
Income tax provision (benefit) 2,216,000,000 1,231,000,000 5,643,000,000 4,024,000,000
Total 7,621,000,000 6,667,000,000 21,618,000,000 20,051,000,000
Equity in earnings of affiliates (422,000,000) (354,000,000) (893,000,000) (1,041,000,000)
Interest income 0 (2,000,000) 0 (6,000,000)
Interest and debt expense 0 0 0 0
Other 8,276,000,000 6,510,000,000 23,150,000,000 18,968,000,000
Total 7,854,000,000 6,154,000,000 22,257,000,000 17,921,000,000
Net income (loss) 3,953,000,000 2,194,000,000 10,456,000,000 7,547,000,000
Segment Totals | Operating Segments        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 20,089,000,000 15,491,000,000 56,278,000,000 47,031,000,000
Segment Totals | Intersegment eliminations        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues (661,000,000) (476,000,000) (1,947,000,000) (1,512,000,000)
Alaska        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 1,782,000,000 1,443,000,000 5,178,000,000 4,368,000,000
Production and operating expenses 500,000,000 564,000,000 1,497,000,000 1,616,000,000
Depreciation, depletion and amortization 353,000,000 327,000,000 1,051,000,000 1,043,000,000
Income tax provision (benefit) 132,000,000 61,000,000 383,000,000 247,000,000
Total 985,000,000 952,000,000 2,931,000,000 2,906,000,000
Equity in earnings of affiliates 0 0 0 0
Interest income 0 0 0 0
Interest and debt expense 0 0 0 0
Other 374,000,000 361,000,000 1,008,000,000 870,000,000
Total 374,000,000 361,000,000 1,008,000,000 870,000,000
Net income (loss) 423,000,000 130,000,000 1,239,000,000 592,000,000
Alaska | Operating Segments        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 1,782,000,000 1,443,000,000 5,178,000,000 4,368,000,000
Alaska | Intersegment eliminations        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 0 0 0 0
L48        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 13,231,000,000 10,538,000,000 37,339,000,000 32,049,000,000
Production and operating expenses 1,335,000,000 1,434,000,000 3,864,000,000 4,399,000,000
Depreciation, depletion and amortization 2,155,000,000 2,079,000,000 6,353,000,000 5,986,000,000
Income tax provision (benefit) 651,000,000 345,000,000 1,768,000,000 1,175,000,000
Total 4,141,000,000 3,858,000,000 11,985,000,000 11,560,000,000
Equity in earnings of affiliates 0 (3,000,000) 0 (11,000,000)
Interest income 0 0 0 0
Interest and debt expense 0 0 0 0
Other 6,629,000,000 5,443,000,000 18,906,000,000 16,071,000,000
Total 6,629,000,000 5,440,000,000 18,906,000,000 16,060,000,000
Net income (loss) 2,461,000,000 1,240,000,000 6,448,000,000 4,429,000,000
L48 | Physical contracts meeting the definition of a derivative        
Segment Reporting [Line Items]        
Revenue from contracts outside the scope of ASC Topic 606 1,600,000,000 1,500,000,000 3,700,000,000 4,200,000,000
L48 | Operating Segments        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 13,234,000,000 10,541,000,000 37,351,000,000 32,055,000,000
L48 | Intersegment eliminations        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues (3,000,000) (3,000,000) (12,000,000) (6,000,000)
Canada        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 1,221,000,000 941,000,000 3,542,000,000 2,774,000,000
Production and operating expenses 203,000,000 218,000,000 682,000,000 635,000,000
Depreciation, depletion and amortization 152,000,000 142,000,000 437,000,000 416,000,000
Income tax provision (benefit) 65,000,000 60,000,000 196,000,000 191,000,000
Total 420,000,000 420,000,000 1,315,000,000 1,242,000,000
Equity in earnings of affiliates 0 0 0 0
Interest income 0 0 0 0
Interest and debt expense 0 0 0 0
Other 622,000,000 333,000,000 1,643,000,000 939,000,000
Total 622,000,000 333,000,000 1,643,000,000 939,000,000
Net income (loss) 179,000,000 188,000,000 584,000,000 593,000,000
Canada | Physical contracts meeting the definition of a derivative        
Segment Reporting [Line Items]        
Revenue from contracts outside the scope of ASC Topic 606 100,000,000 100,000,000 500,000,000 500,000,000
Canada | Operating Segments        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 1,879,000,000 1,414,000,000 5,477,000,000 4,280,000,000
Canada | Intersegment eliminations        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues (658,000,000) (473,000,000) (1,935,000,000) (1,506,000,000)
EMENA        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 2,564,000,000 1,578,000,000 6,467,000,000 4,918,000,000
Production and operating expenses 275,000,000 213,000,000 802,000,000 669,000,000
Depreciation, depletion and amortization 232,000,000 245,000,000 712,000,000 662,000,000
Income tax provision (benefit) 1,301,000,000 676,000,000 3,059,000,000 2,191,000,000
Total 1,808,000,000 1,134,000,000 4,573,000,000 3,522,000,000
Equity in earnings of affiliates (56,000,000) (157,000,000) (196,000,000) (445,000,000)
Interest income 0 0 0 0
Interest and debt expense 0 0 0 0
Other 450,000,000 274,000,000 1,117,000,000 858,000,000
Total 394,000,000 117,000,000 921,000,000 413,000,000
Net income (loss) 362,000,000 327,000,000 973,000,000 983,000,000
EMENA | Physical contracts meeting the definition of a derivative        
Segment Reporting [Line Items]        
Revenue from contracts outside the scope of ASC Topic 606 500,000,000 100,000,000 1,100,000,000 500,000,000
EMENA | Operating Segments        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 2,564,000,000 1,578,000,000 6,467,000,000 4,918,000,000
EMENA | Intersegment eliminations        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 0 0 0 0
AP        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 630,000,000 515,000,000 1,805,000,000 1,410,000,000
Production and operating expenses 96,000,000 101,000,000 263,000,000 251,000,000
Depreciation, depletion and amortization 104,000,000 113,000,000 314,000,000 350,000,000
Income tax provision (benefit) 67,000,000 89,000,000 237,000,000 220,000,000
Total 267,000,000 303,000,000 814,000,000 821,000,000
Equity in earnings of affiliates (366,000,000) (194,000,000) (697,000,000) (585,000,000)
Interest income 0 (2,000,000) 0 (6,000,000)
Interest and debt expense 0 0 0 0
Other 201,000,000 99,000,000 476,000,000 230,000,000
Total (165,000,000) (97,000,000) (221,000,000) (361,000,000)
Net income (loss) 528,000,000 309,000,000 1,212,000,000 950,000,000
AP | Operating Segments        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 630,000,000 515,000,000 1,805,000,000 1,410,000,000
AP | Intersegment eliminations        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 0 0 0 0
Corporate        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 7,000,000 16,000,000 26,000,000 33,000,000
Production and operating expenses 31,000,000 102,000,000 39,000,000 140,000,000
Depreciation, depletion and amortization 9,000,000 11,000,000 27,000,000 44,000,000
Income tax provision (benefit) (235,000,000) (29,000,000) (331,000,000) (159,000,000)
Total (195,000,000) 84,000,000 (265,000,000) 25,000,000
Equity in earnings of affiliates (26,000,000) 9,000,000 (41,000,000) (11,000,000)
Interest income (104,000,000) (60,000,000) (293,000,000) (199,000,000)
Interest and debt expense 142,000,000 223,000,000 522,000,000 660,000,000
Other 142,000,000 228,000,000 444,000,000 559,000,000
Total 154,000,000 400,000,000 632,000,000 1,009,000,000
Net income (loss) 48,000,000 (468,000,000) (341,000,000) (1,001,000,000)
Corporate | Corporate        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues 16,000,000 24,000,000 53,000,000 56,000,000
Corporate | Intersegment eliminations        
Segment Reporting [Line Items]        
Consolidated sales and other operating revenues $ (9,000,000) $ (8,000,000) $ (27,000,000) $ (23,000,000)