Segment Disclosures and Related Information - Summary of Segment Level Net Income (Loss) (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | $ 19,161,000,000 | $ 14,004,000,000 | $ 34,922,000,000 | $ 30,521,000,000 |
| Production and operating expenses | 2,431,000,000 | 2,572,000,000 | 4,707,000,000 | 5,078,000,000 |
| Depreciation, depletion and amortization | 2,983,000,000 | 2,838,000,000 | 5,889,000,000 | 5,584,000,000 |
| Income tax provision (benefit) | 2,151,000,000 | 1,046,000,000 | 3,331,000,000 | 2,663,000,000 |
| Total | 7,565,000,000 | 6,456,000,000 | 13,927,000,000 | 13,325,000,000 |
| Equity in earnings of affiliates | (239,000,000) | (315,000,000) | (486,000,000) | (707,000,000) |
| Interest income | (80,000,000) | (67,000,000) | (189,000,000) | (143,000,000) |
| Interest and debt expense | 182,000,000 | 232,000,000 | 380,000,000 | 437,000,000 |
| Other | 7,802,000,000 | 5,727,000,000 | 15,176,000,000 | 12,789,000,000 |
| Total | 7,665,000,000 | 5,577,000,000 | 14,881,000,000 | 12,376,000,000 |
| Net income (loss) | 3,931,000,000 | 1,971,000,000 | 6,114,000,000 | 4,820,000,000 |
| Physical contracts meeting the definition of a derivative | ||||
| Segment Reporting [Line Items] | ||||
| Revenue from contracts outside the scope of ASC Topic 606 | 1,008,000,000 | 1,445,000,000 | 3,147,000,000 | 3,415,000,000 |
| Operating Segments And Corporate Nonsegment | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | 19,794,000,000 | 14,500,000,000 | 36,226,000,000 | 31,572,000,000 |
| Intersegment eliminations | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | (633,000,000) | (496,000,000) | (1,304,000,000) | (1,051,000,000) |
| Segment Totals | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | 19,155,000,000 | 13,997,000,000 | 34,903,000,000 | 30,504,000,000 |
| Production and operating expenses | 2,445,000,000 | 2,553,000,000 | 4,699,000,000 | 5,040,000,000 |
| Depreciation, depletion and amortization | 2,974,000,000 | 2,823,000,000 | 5,871,000,000 | 5,551,000,000 |
| Income tax provision (benefit) | 2,128,000,000 | 1,139,000,000 | 3,427,000,000 | 2,793,000,000 |
| Total | 7,547,000,000 | 6,515,000,000 | 13,997,000,000 | 13,384,000,000 |
| Equity in earnings of affiliates | (212,000,000) | (304,000,000) | (471,000,000) | (687,000,000) |
| Interest income | 0 | (2,000,000) | 0 | (4,000,000) |
| Interest and debt expense | 0 | 0 | 0 | 0 |
| Other | 7,659,000,000 | 5,538,000,000 | 14,874,000,000 | 12,458,000,000 |
| Total | 7,447,000,000 | 5,232,000,000 | 14,403,000,000 | 11,767,000,000 |
| Net income (loss) | 4,161,000,000 | 2,250,000,000 | 6,503,000,000 | 5,353,000,000 |
| Segment Totals | Operating Segments | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | 19,779,000,000 | 14,486,000,000 | 36,189,000,000 | 31,540,000,000 |
| Segment Totals | Intersegment eliminations | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | (624,000,000) | (489,000,000) | (1,286,000,000) | (1,036,000,000) |
| Alaska | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | 1,873,000,000 | 1,315,000,000 | 3,396,000,000 | 2,925,000,000 |
| Production and operating expenses | 522,000,000 | 546,000,000 | 997,000,000 | 1,052,000,000 |
| Depreciation, depletion and amortization | 346,000,000 | 361,000,000 | 698,000,000 | 716,000,000 |
| Income tax provision (benefit) | 159,000,000 | 47,000,000 | 251,000,000 | 186,000,000 |
| Total | 1,027,000,000 | 954,000,000 | 1,946,000,000 | 1,954,000,000 |
| Equity in earnings of affiliates | 0 | 0 | 0 | 0 |
| Interest income | 0 | 0 | 0 | 0 |
| Interest and debt expense | 0 | 0 | 0 | 0 |
| Other | 324,000,000 | 226,000,000 | 634,000,000 | 509,000,000 |
| Total | 324,000,000 | 226,000,000 | 634,000,000 | 509,000,000 |
| Net income (loss) | 522,000,000 | 135,000,000 | 816,000,000 | 462,000,000 |
| Alaska | Operating Segments | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | 1,873,000,000 | 1,315,000,000 | 3,396,000,000 | 2,925,000,000 |
| 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 | 13,028,000,000 | 9,963,000,000 | 24,108,000,000 | 21,511,000,000 |
| Production and operating expenses | 1,276,000,000 | 1,474,000,000 | 2,529,000,000 | 2,965,000,000 |
| Depreciation, depletion and amortization | 2,147,000,000 | 2,003,000,000 | 4,198,000,000 | 3,907,000,000 |
| Income tax provision (benefit) | 722,000,000 | 382,000,000 | 1,117,000,000 | 830,000,000 |
| Total | 4,145,000,000 | 3,859,000,000 | 7,844,000,000 | 7,702,000,000 |
| Equity in earnings of affiliates | 0 | (4,000,000) | 0 | (8,000,000) |
| Interest income | 0 | 0 | 0 | 0 |
| Interest and debt expense | 0 | 0 | 0 | 0 |
| Other | 6,299,000,000 | 4,709,000,000 | 12,277,000,000 | 10,628,000,000 |
| Total | 6,299,000,000 | 4,705,000,000 | 12,277,000,000 | 10,620,000,000 |
| Net income (loss) | 2,584,000,000 | 1,399,000,000 | 3,987,000,000 | 3,189,000,000 |
| L48 | Physical contracts meeting the definition of a derivative | ||||
| Segment Reporting [Line Items] | ||||
| Revenue from contracts outside the scope of ASC Topic 606 | 500,000,000 | 1,200,000,000 | 2,100,000,000 | 2,700,000,000 |
| L48 | Operating Segments | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | 13,031,000,000 | 9,966,000,000 | 24,117,000,000 | 21,514,000,000 |
| L48 | Intersegment eliminations | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | (3,000,000) | (3,000,000) | (9,000,000) | (3,000,000) |
| Canada | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | 1,304,000,000 | 848,000,000 | 2,321,000,000 | 1,833,000,000 |
| Production and operating expenses | 290,000,000 | 216,000,000 | 479,000,000 | 417,000,000 |
| Depreciation, depletion and amortization | 133,000,000 | 143,000,000 | 285,000,000 | 274,000,000 |
| Income tax provision (benefit) | 104,000,000 | 50,000,000 | 131,000,000 | 131,000,000 |
| Total | 527,000,000 | 409,000,000 | 895,000,000 | 822,000,000 |
| Equity in earnings of affiliates | 0 | 0 | 0 | 0 |
| Interest income | 0 | 0 | 0 | 0 |
| Interest and debt expense | 0 | 0 | 0 | 0 |
| Other | 457,000,000 | 290,000,000 | 1,021,000,000 | 606,000,000 |
| Total | 457,000,000 | 290,000,000 | 1,021,000,000 | 606,000,000 |
| Net income (loss) | 320,000,000 | 149,000,000 | 405,000,000 | 405,000,000 |
| 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 | 200,000,000 | 400,000,000 | 400,000,000 |
| Canada | Operating Segments | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | 1,925,000,000 | 1,334,000,000 | 3,598,000,000 | 2,866,000,000 |
| Canada | Intersegment eliminations | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | (621,000,000) | (486,000,000) | (1,277,000,000) | (1,033,000,000) |
| EMENA | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | 2,276,000,000 | 1,400,000,000 | 3,903,000,000 | 3,340,000,000 |
| Production and operating expenses | 270,000,000 | 232,000,000 | 527,000,000 | 456,000,000 |
| Depreciation, depletion and amortization | 241,000,000 | 198,000,000 | 480,000,000 | 417,000,000 |
| Income tax provision (benefit) | 1,033,000,000 | 593,000,000 | 1,758,000,000 | 1,515,000,000 |
| Total | 1,544,000,000 | 1,023,000,000 | 2,765,000,000 | 2,388,000,000 |
| Equity in earnings of affiliates | (45,000,000) | (115,000,000) | (140,000,000) | (288,000,000) |
| Interest income | 0 | 0 | 0 | 0 |
| Interest and debt expense | 0 | 0 | 0 | 0 |
| Other | 431,000,000 | 255,000,000 | 667,000,000 | 584,000,000 |
| Total | 386,000,000 | 140,000,000 | 527,000,000 | 296,000,000 |
| Net income (loss) | 346,000,000 | 237,000,000 | 611,000,000 | 656,000,000 |
| EMENA | Physical contracts meeting the definition of a derivative | ||||
| Segment Reporting [Line Items] | ||||
| Revenue from contracts outside the scope of ASC Topic 606 | 400,000,000 | 100,000,000 | 600,000,000 | 400,000,000 |
| EMENA | Operating Segments | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | 2,276,000,000 | 1,400,000,000 | 3,903,000,000 | 3,340,000,000 |
| 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 | 674,000,000 | 471,000,000 | 1,175,000,000 | 895,000,000 |
| Production and operating expenses | 87,000,000 | 85,000,000 | 167,000,000 | 150,000,000 |
| Depreciation, depletion and amortization | 107,000,000 | 118,000,000 | 210,000,000 | 237,000,000 |
| Income tax provision (benefit) | 110,000,000 | 67,000,000 | 170,000,000 | 131,000,000 |
| Total | 304,000,000 | 270,000,000 | 547,000,000 | 518,000,000 |
| Equity in earnings of affiliates | (167,000,000) | (185,000,000) | (331,000,000) | (391,000,000) |
| Interest income | 0 | (2,000,000) | 0 | (4,000,000) |
| Interest and debt expense | 0 | 0 | 0 | 0 |
| Other | 148,000,000 | 58,000,000 | 275,000,000 | 131,000,000 |
| Total | (19,000,000) | (129,000,000) | (56,000,000) | (264,000,000) |
| Net income (loss) | 389,000,000 | 330,000,000 | 684,000,000 | 641,000,000 |
| AP | Operating Segments | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | 674,000,000 | 471,000,000 | 1,175,000,000 | 895,000,000 |
| 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 | 6,000,000 | 7,000,000 | 19,000,000 | 17,000,000 |
| Production and operating expenses | (14,000,000) | 19,000,000 | 8,000,000 | 38,000,000 |
| Depreciation, depletion and amortization | 9,000,000 | 15,000,000 | 18,000,000 | 33,000,000 |
| Income tax provision (benefit) | 23,000,000 | (93,000,000) | (96,000,000) | (130,000,000) |
| Total | 18,000,000 | (59,000,000) | (70,000,000) | (59,000,000) |
| Equity in earnings of affiliates | (27,000,000) | (11,000,000) | (15,000,000) | (20,000,000) |
| Interest income | (80,000,000) | (65,000,000) | (189,000,000) | (139,000,000) |
| Interest and debt expense | 182,000,000 | 232,000,000 | 380,000,000 | 437,000,000 |
| Other | 143,000,000 | 189,000,000 | 302,000,000 | 331,000,000 |
| Total | 218,000,000 | 345,000,000 | 478,000,000 | 609,000,000 |
| Net income (loss) | (230,000,000) | (279,000,000) | (389,000,000) | (533,000,000) |
| Corporate | Corporate | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | 15,000,000 | 14,000,000 | 37,000,000 | 32,000,000 |
| Corporate | Intersegment eliminations | ||||
| Segment Reporting [Line Items] | ||||
| Consolidated sales and other operating revenues | $ (9,000,000) | $ (7,000,000) | $ (18,000,000) | $ (15,000,000) |