| USD ($) $ in Millions | Dec 31, 2025 | Dec 31, 2024 | Dec 31, 2023 | Dec 31, 2022 | Dec 31, 2021 | Dec 31, 2020 | Dec 31, 2019 | Dec 31, 2018 | Dec 31, 2017 | Dec 31, 2016 | Dec 31, 2015 | Dec 31, 2014 | Dec 31, 2013 | Dec 31, 2012 | Dec 31, 2011 | Dec 31, 2010 | Dec 31, 2009 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Assets | |||||||||||||||||
Cash and cash equivalents | $ 6,497 | $ 5,607 | $ 5,635 | ||||||||||||||
Short-term investments | 484 | 507 | 971 | ||||||||||||||
Accounts and notes receivable (net of allowance of $4 and $7, respectively) | 5,813 | - | - | ||||||||||||||
Restricted cash | - | - | - | ||||||||||||||
Accounts and notes receivable—related parties | - | - | - | ||||||||||||||
Investment in Cenovus Energy | - | - | - | ||||||||||||||
Inventories | 1,873 | 1,809 | 1,398 | ||||||||||||||
Prepaid expenses and other current assets | 865 | 1,029 | 852 | ||||||||||||||
Total current assets | 15,532 | 15,647 | 14,330 | ||||||||||||||
Investments and long-term receivables | 10,185 | 9,869 | 9,130 | ||||||||||||||
Loans and advances-related parties | - | - | - | ||||||||||||||
Net properties, plants and equipment (net of accumulated DD&A of $90,396 and $81,072, respectively) | 93,239 | 94,356 | 70,044 | ||||||||||||||
Goodwill | - | - | - | ||||||||||||||
Intangibles | - | - | - | ||||||||||||||
Other assets | 2,983 | 2,908 | 2,420 | ||||||||||||||
Total assets | 121,939 | 122,780 | 95,924 | ||||||||||||||
Liabilities | |||||||||||||||||
Accounts payable | 6,218 | - | - | ||||||||||||||
Accounts payable | 6,218 | - | - | ||||||||||||||
Accounts payable—related parties | - | - | - | ||||||||||||||
Short-term debt | 1,020 | 1,035 | 1,074 | ||||||||||||||
Accrued income and other taxes | 1,835 | 2,460 | 1,811 | ||||||||||||||
Employee benefit obligations | 969 | 1,022 | 1,009 | ||||||||||||||
Other accruals | 1,763 | 1,498 | 1,229 | ||||||||||||||
Total current liabilities | 11,972 | 12,124 | 10,005 | ||||||||||||||
Long-term debt | 22,424 | 23,289 | 17,863 | ||||||||||||||
Asset retirement obligations and accrued environmental costs | 8,214 | 8,089 | 7,220 | ||||||||||||||
Deferred income taxes | 12,237 | 11,426 | 8,813 | ||||||||||||||
Joint venture acquisition obligation-related party | - | - | - | ||||||||||||||
Employee benefit obligations | - | - | - | ||||||||||||||
Other liabilities and deferred credits | 1,636 | 2,034 | 1,735 | ||||||||||||||
Total liabilities | 57,452 | 57,984 | 46,645 | ||||||||||||||
Equity | |||||||||||||||||
Par value | 23 | 23 | 21 | ||||||||||||||
Capital in excess of par | 77,728 | 77,529 | 61,303 | ||||||||||||||
Grantor trusts (at cost: 2010- 36,890,375 shares; 2009-38,742,261 shares) | - | - | - | ||||||||||||||
Treasury stock (at cost: 2025—1,028,350,186 shares; 2024—974,806,010 shares) | 76,217 | 71,152 | 65,640 | ||||||||||||||
Accumulated other comprehensive income (loss) | (5,911) | (6,473) | (5,673) | ||||||||||||||
Unearned employee compensation | - | - | - | ||||||||||||||
Retained earnings | 68,864 | 64,869 | 59,268 | ||||||||||||||
Total equity | 64,487 | 64,796 | 49,279 | ||||||||||||||
Noncontrolling interests | - | - | - | ||||||||||||||
Total Equity | - | - | - | ||||||||||||||
Total liabilities and equity | $ 121,939 | $ 122,780 | $ 95,924 |