| Fiscal period | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
| Period End Date | 12/31/2025 | 12/31/2024 | 12/31/2023 | 12/31/2022 | 12/31/2021 | 12/31/2020 | 12/31/2019 | 12/31/2018 | 12/31/2017 | 12/31/2016 |
| Revenues:Oil sales | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Revenues:Oil, gas and NGL sales | 11,223.00 | 11,176.00 | 10,791.00 | 14,082.00 | 9,531.00 | 2,695.00 | -- | -- | -- | 4,182.00 |
| Upstream revenues | -- | -- | -- | -- | -- | -- | 3,355.00 | 6,285.00 | 5,307.00 | -- |
| Revenues:Marketing and midstream revenues | 5,563.00 | 4,743.00 | 4,349.00 | 5,745.00 | 4,219.00 | 1,978.00 | 2,865.00 | 4,449.00 | 8,642.00 | 6,323.00 |
| Revenues: Gas sales | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Revenues: NGL sales | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Revenue: Other | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Revenues:Net (loss) gain on oil and gas derivative financial instruments | 402.00 | 21.00 | 118.00 | (658.00) | (1,544.00) | 155.00 | -- | -- | -- | (201.00) |
| Asset dispositions and other | -- | -- | -- | -- | -- | -- | -- | -- | -- | 1,893.00 |
| Total revenues | 17,188.00 | 15,940.00 | 15,258.00 | 19,169.00 | 12,206.00 | 4,828.00 | 6,220.00 | 10,734.00 | 13,949.00 | 12,197.00 |
| Production expenses | 3,567.00 | 3,183.00 | 2,928.00 | 2,797.00 | 2,131.00 | 1,123.00 | 1,197.00 | 2,225.00 | -- | -- |
| Lease operating expenses | -- | -- | -- | -- | -- | 270.00 | -- | -- | 1,823.00 | 1,582.00 |
| Depreciation, depletion and amortization of oil and gas properties | 3,595.00 | 3,255.00 | -- | 2,223.00 | 2,158.00 | 1,300.00 | 1,497.00 | 1,658.00 | 2,074.00 | 1,792.00 |
| Depreciation and amortization of non-oil and gas properties | -- | -- | 2,554.00 | -- | -- | -- | -- | -- | -- | -- |
| Amortization of goodwill | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| General and administrative expenses | 492.00 | 500.00 | 408.00 | 395.00 | 391.00 | 338.00 | 475.00 | 650.00 | 872.00 | 645.00 |
| Marketing and midstream operating costs and expenses | 5,635.00 | 4,792.00 | 4,409.00 | 5,780.00 | 4,238.00 | 2,013.00 | 2,812.00 | 4,363.00 | 7,730.00 | 5,492.00 |
| Taxes other than income taxes | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Production taxes | -- | -- | -- | -- | -- | -- | -- | -- | -- | 275.00 |
| Restructuring costs | -- | -- | -- | -- | 258.00 | 49.00 | 84.00 | 114.00 | -- | 267.00 |
| Asset impairments | (254.00) | -- | -- | -- | -- | (2,693.00) | -- | (156.00) | (17.00) | (4,975.00) |
| Exploration expenses | (43.00) | (28.00) | (20.00) | (29.00) | (14.00) | (167.00) | (58.00) | (177.00) | (380.00) | -- |
| Accretion of asset retirement obligation | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Reduction of carrying value of oil and gas properties | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Transportation costs | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Expenses related to mergers | -- | -- | -- | -- | -- | 167.00 | -- | -- | -- | -- |
| Impairment of ChevronTexaco Corporation common stock | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Other operating items | (24.00) | -- | -- | -- | 43.00 | 34.00 | (4.00) | (140.00) | -- | (64.00) |
| Gains and losses on asset sales | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Asset dispositions | 343.00 | (11.00) | 30.00 | 44.00 | 168.00 | 1.00 | 48.00 | 263.00 | -- | -- |
| Financing costs, net | (455.00) | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Total Operating Expenses | 13,722.00 | -- | 10,635.00 | -- | 9,308.00 | 7,918.00 | 6,329.00 | 9,814.00 | -- | 15,092.00 |
| Operating Income | -- | -- | -- | -- | -- | -- | -- | -- | -- | (2,895.00) |
| Interest expense | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Restructuring costs | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Dividends on subsidiary’s preferred stock | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Other income, net | -- | -- | (38.00) | -- | -- | -- | -- | -- | -- | -- |
| Effects of changes in foreign currency exchange rates | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Change in fair value of derivative financial instruments | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Interest-rate and other financial instruments | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Asset impairments | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net financing costs | -- | (363.00) | (308.00) | (309.00) | (329.00) | -- | (250.00) | (594.00) | (498.00) | (904.00) |
| Other nonoperating items | -- | (96.00) | -- | 95.00 | -- | -- | -- | -- | 124.00 | (78.00) |
| Asset dispositions | -- | -- | -- | -- | -- | -- | -- | -- | 217.00 | -- |
| Earnings before income tax expense | 3,466.00 | 3,712.00 | 4,623.00 | 7,775.00 | 2,898.00 | (3,090.00) | (109.00) | 920.00 | 896.00 | (3,877.00) |
| Income tax expense (benefit) | 785.00 | 770.00 | 841.00 | 1,738.00 | 65.00 | (547.00) | (30.00) | 156.00 | (182.00) | (173.00) |
| Income tax expense: Current | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income tax expense: Deferred | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Deferred income tax expense (benefit): U.S.federal | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Deferred income tax expense (benefit): Various states | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Deferred income tax expense (benefit): Canada | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Deferred income tax expense (benefit): International | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Current income tax expense (benefit): U.S.federal | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Current income tax expense (benefit): Various states | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Current income tax expense (benefit): Canada | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Current income tax expense (benefit): International | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Current income tax expense: Other | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Deferred income tax expense (benefit): Other | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings before cumulative effect of change in accounting principle | -- | -- | -- | 6,037.00 | 2,833.00 | (2,543.00) | -- | 764.00 | -- | -- |
| Net results of discontinued operations | -- | -- | -- | -- | -- | (128.00) | (274.00) | 2,460.00 | -- | -- |
| Cumulative change in accounting principle, net of tax | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net earnings | 2,681.00 | 2,942.00 | 3,782.00 | 6,037.00 | 2,833.00 | (2,671.00) | (353.00) | 3,224.00 | 1,078.00 | (3,704.00) |
| Net earnings attributable to noncontrolling interests | 39.00 | 51.00 | 35.00 | 22.00 | 20.00 | 9.00 | 2.00 | 160.00 | 180.00 | (402.00) |
| Preferred stock dividends | -- | -- | -- | -- | -- | -- | -- | -- | 10.00 | -- |
| Net earnings applicable to common stockholders | 2,642.00 | 2,891.00 | 3,747.00 | 6,015.00 | 2,813.00 | (2,680.00) | (355.00) | 3,064.00 | 888.00 | (3,302.00) |
| Earnings before change in accounting principle: Basic | -- | -- | -- | 9.15 | 4.20 | (6.78) | (0.21) | 1.53 | -- | -- |
| Net results of discontinued operations | -- | -- | -- | -- | -- | (0.34) | (0.68) | 4.61 | -- | -- |
| Cumulative effect of change in accounting principle | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Basic net earnings per share | 4.18 | 4.58 | 5.86 | 9.15 | 4.20 | (7.12) | (0.89) | 6.14 | 1.71 | (6.52) |
| Earnings before change in accounting principle: Diluted | -- | -- | -- | 9.12 | 4.19 | (6.78) | (0.21) | 1.52 | -- | -- |
| Net results of discontinued operations | -- | -- | -- | -- | -- | (0.34) | (0.68) | 4.58 | -- | -- |
| Cumulative effect of change in accounting principle | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Diluted net earnings per share | 4.17 | 4.56 | 5.84 | 9.12 | 4.19 | (7.12) | (0.89) | 6.10 | 1.70 | (6.52) |
| Weighted Average Shares Outstanding (Basic) | 632.00 | 632.00 | 639.00 | 651.00 | 663.00 | 377.00 | 401.00 | 494.00 | 520.00 | 507.00 |
| Weighted Average Shares Outstanding (Diluted) | 633.00 | 634.00 | 642.00 | 653.00 | 665.00 | 377.00 | 401.00 | 497.00 | 523.00 | 507.00 |