Exxon Mobil (XOM) 10-K 28 Feb 24 2023 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2023	Jan. 31, 2024	Jun. 30, 2023
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Transition Report	false
Entity File Number	1-2256
Entity Registrant Name	Exxon Mobil Corporation
Entity Incorporation, State or Country Code	NJ
Entity Tax Identification Number	13-5409005
Entity Address Address Line 1	22777 Springwoods Village Parkway
Entity Address City or Town	Spring
Entity Address State or Province	TX
Entity Address Postal Zip Code	77389-1425
City Area Code	972
Local Phone Number	940-6000
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Document Financial Statement Error Correction [Flag]	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 429
Entity Common Stock Shares Outstanding		3,967,844,307
Documents Incorporated by Reference Text Block	Proxy Statement for the 2024 Annual Meeting of Shareholders (Part III)
Amendment Flag	false
Document Fiscal Period Focus	FY
Entity Central Index Key	0000034088
Common Stock, without par value [Member]
Document Information [Line Items]
Security 12(b) Title	Common Stock, without par value
Trading Symbol	XOM
Security Exchange Name	NYSE
0.142% Notes Due in 2024 [Member]
Document Information [Line Items]
Security 12(b) Title	0.142% Notes due 2024
Trading Symbol	XOM24B
Security Exchange Name	NYSE
0.524% Notes Due in 2028 [Member]
Document Information [Line Items]
Security 12(b) Title	0.524% Notes due 2028
Trading Symbol	XOM28
Security Exchange Name	NYSE
0.835% Notes Due in 2032 [Member]
Document Information [Line Items]
Security 12(b) Title	0.835% Notes due 2032
Trading Symbol	XOM32
Security Exchange Name	NYSE
1.408% Notes Due in 2039 [Member]
Document Information [Line Items]
Security 12(b) Title	1.408% Notes due 2039
Trading Symbol	XOM39A
Security Exchange Name	NYSE

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2023
Audit Information [Abstract]
Auditor Name	PricewaterhouseCoopers LLP
Auditor Location	Houston, Texas
Auditor Firm ID	238

Consolidated Statement Of Incom

Consolidated Statement Of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues and other income
Total revenues	$ 344,582	$ 413,680	$ 285,640
Costs and other deductions
Crude oil and product purchases	193,029	228,959	155,164
Production and manufacturing expenses	36,885	42,609	36,035
Selling, general and administrative expenses	9,919	10,095	9,574
Depreciation and depletion (includes impairments)	20,641	24,040	20,607
Exploration expenses, including dry holes	751	1,025	1,054
Non-service pension and postretirement benefit expense	714	482	786
Interest expense	849	798	947
Other taxes and duties	29,011	27,919	30,239
Total costs and other deductions	291,799	335,927	254,406
Income (loss) before income taxes	52,783	77,753	31,234
Income tax expense (benefit)	15,429	20,176	7,636
Net income (loss) including noncontrolling interests	37,354	57,577	23,598
Net income (loss) attributable to noncontrolling interests	1,344	1,837	558
Net income (loss) attributable to ExxonMobil	$ 36,010	$ 55,740	$ 23,040
Earnings (loss) per common share (dollars)	$ 8.89	$ 13.26	$ 5.39
Earnings (loss) per common share, basic (in dollars per share)	$ 8.89	$ 13.26	$ 5.39
Sales and other operating revenue
Revenues and other income
Total revenues	$ 334,697	$ 398,675	$ 276,692
Income from equity affiliates
Revenues and other income
Total revenues	6,385	11,463	6,657
Other income
Revenues and other income
Total revenues	$ 3,500	$ 3,542	$ 2,291

Consolidated Statement Of Compr

Consolidated Statement Of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss) including noncontrolling interests	$ 37,354	$ 57,577	$ 23,598
Other comprehensive income (loss) (net of income taxes)
Foreign exchange translation adjustment	1,241	(3,482)	(872)
Adjustment for foreign exchange translation (gain)/loss included in net income	609	0	(2)
Postretirement benefits reserves adjustment (excluding amortization)	(369)	3,395	3,118
Amortization and settlement of postretirement benefits reserves adjustment included in net periodic benefit costs	61	403	925
Total other comprehensive income (loss)	1,542	316	3,169
Comprehensive income (loss) including noncontrolling interests	38,896	57,893	26,767
Comprehensive income (loss) attributable to noncontrolling interests	1,605	1,659	786
Comprehensive income (loss) attributable to ExxonMobil	$ 37,291	$ 56,234	$ 25,981

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 31,539	$ 29,640
Cash and cash equivalents – restricted	29	25
Notes and accounts receivable – net	38,015	41,749
Inventories
Crude oil, products and merchandise	20,528	20,434
Materials and supplies	4,592	4,001
Other current assets	1,906	1,782
Total current assets	96,609	97,631
Investments, advances and long-term receivables	47,630	49,793
Property, plant and equipment, at cost, less accumulated depreciation and depletion	214,940	204,692
Other assets, including intangibles – net	17,138	16,951
Total Assets	376,317	369,067
Current liabilities
Notes and loans payable	4,090	634
Accounts payable and accrued liabilities	58,037	63,197
Income taxes payable	3,189	5,214
Total current liabilities	65,316	69,045
Long-term debt	37,483	40,559
Postretirement benefits reserves	10,496	10,045
Deferred income tax liabilities	24,452	22,874
Total Liabilities	163,779	166,594
Commitments and contingencies
EQUITY
Common stock without par value (9,000 million shares authorized, 8,019 million shares issued)	17,781	15,752
Earnings reinvested	453,927	432,860
Accumulated other comprehensive income	(11,989)	(13,270)
Common stock held in treasury (4,048 million shares in 2023 and 3,937 million shares in 2022)	(254,917)	(240,293)
ExxonMobil share of equity	204,802	195,049
Noncontrolling interests	7,736	7,424
Total Equity	212,538	202,473
Total Liabilities and Equity	376,317	369,067
Related Party
Current liabilities
Other long-term obligations	1,804	2,338
Nonrelated Party
Current liabilities
Other long-term obligations	$ 24,228	$ 21,733

Consolidated Balance Sheet (Par

Consolidated Balance Sheet (Parenthetical) - $ / shares shares in Millions	Dec. 31, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Common stock, without par value
Common stock, shares authorized	9,000	9,000
Common stock, shares issued	8,019	8,019
Common stock held in treasury, shares	4,048	3,937

Consolidated Statement Of Cash

Consolidated Statement Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023		Dec. 31, 2022	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss) including noncontrolling interests	$ 37,354		$ 57,577	$ 23,598
Adjustments for noncash transactions
Depreciation and depletion (includes impairments)	20,641		24,040	20,607
Deferred income tax charges/(credits)	634		3,758	303
Postretirement benefits expense in excess of/(less than) net payments	90		(2,981)	754
Other long-term obligation provisions in excess of/(less than) payments	(1,501)		(1,932)	50
Dividends received greater than/(less than) equity in current earnings of equity companies	509		(2,446)	(668)
Changes in operational working capital, excluding cash and debt
Notes and accounts receivable reduction/(increase)	4,370		(11,019)	(12,098)
Inventories reduction/(increase)	(3,472)		(6,947)	(489)
Other current assets reduction/(increase)	(426)		(688)	(71)
Accounts and other payables increase/(reduction)	(4,727)		18,460	16,820
Net (gain)/loss on asset sales	(513)		(1,034)	(1,207)
All other items - net	2,410		9	530
Net cash provided by operating activities	55,369		76,797	48,129
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to property, plant and equipment	(21,919)		(18,407)	(12,076)
Proceeds from asset sales and returns of investments	4,078		5,247	3,176
Additional investments and advances	(2,995)		(3,090)	(2,817)
Other investing activities including collection of advances	1,562		1,508	1,482
Net cash used in investing activities	(19,274)		(14,742)	(10,235)
CASH FLOWS FROM FINANCING ACTIVITIES
Additions to long-term debt	939	[1]	637	46
Reductions in long-term debt	(15)		(5)	(8)
Additions to short-term debt	0		198	12,687
Reductions in short-term debt	(879)		(8,075)	(29,396)
Additions/(reductions) in debt with three months or less maturity	(284)		25	(2,983)
Contingent consideration payments	(68)		(58)	(30)
Cash dividends to ExxonMobil shareholders	(14,941)		(14,939)	(14,924)
Cash dividends to noncontrolling interests	(531)		(267)	(224)
Changes in noncontrolling interests	(770)		(1,475)	(436)
Common stock acquired	(17,748)		(15,155)	(155)
Net cash provided by (used in) financing activities	(34,297)		(39,114)	(35,423)
Effects of exchange rate changes on cash	105		(78)	(33)
Increase/(decrease) in cash and cash equivalents	1,903		22,863	2,438
Cash and cash equivalents at beginning of year	29,665		6,802	4,364
Cash and cash equivalents at end of year	$ 31,568		$ 29,665	$ 6,802
[1] Includes $568 million issued to facilitate the sale of an entity where the buyer assumed the debt upon closing; no longer on the Consolidated Balance Sheet at the end of 2023.

Condensed Consolidated Statemen

Condensed Consolidated Statement Of Cash Flows (Parenthetical) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)
Supplemental Cash Flow Elements [Abstract]
Long-Term Debt Assumed by 3rd party	568

Consolidated Statement Of Chang

Consolidated Statement Of Changes In Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock, without par value [Member]	ExxonMobil Share Of Earnings Reinvested [Member]	ExxonMobil Share Of Accumulated Other Comprehensive Income [Member]	Common Stock Held In Treasury [Member]	ExxonMobil Share of Equity [Member]	Noncontrolling Interest [Member]
Balance at Dec. 31, 2020	$ 164,130	$ 15,688	$ 383,943	$ (16,705)	$ (225,776)	$ 157,150	$ 6,980
Balance (in shares) - issued at Dec. 31, 2020	8,019
Balance (in shares) - in treasury at Dec. 31, 2020	(3,786)
Balance (in shares) - outstanding at Dec. 31, 2020	4,233
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Amortization of stock-based awards	$ 534	534				534
Other	(361)	(476)				(476)	115
Net income (loss) for the year	23,598		23,040			23,040	558
Dividends - common shares (company)			(14,924)			(14,924)
Dividends - common shares (NCI)							(224)
Dividends - common shares (total)	(15,148)
Other comprehensive income	3,169			2,941		2,941	228
Share repurchases, at cost (company)					(155)	(155)
Share repurchase, at cost, noncontrolling interest							(551)
Share repurchase, at cost, including noncontrolling interest	$ (706)
Share repurchases, at cost (in shares)	(2)
Dispositions	$ 467				467	467
Dispositions (in shares)	8
Balance at Dec. 31, 2021	$ 175,683	15,746	392,059	(13,764)	(225,464)	168,577	7,106
Balance (in shares) - issued at Dec. 31, 2021	8,019
Balance (in shares) - in treasury at Dec. 31, 2021	(3,780)
Balance (in shares) - outstanding at Dec. 31, 2021	4,239
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Amortization of stock-based awards	$ 481	481				481
Other	(70)	(475)				(475)	405
Net income (loss) for the year	57,577		55,740			55,740	1,837
Dividends - common shares (company)			(14,939)			(14,939)
Dividends - common shares (NCI)							(267)
Dividends - common shares (total)	(15,206)
Other comprehensive income	316			494		494	(178)
Share repurchases, at cost (company)					(15,295)	(15,295)
Share repurchase, at cost, noncontrolling interest							(1,479)
Share repurchase, at cost, including noncontrolling interest	$ (16,774)
Share repurchases, at cost (in shares)	(165)
Dispositions	$ 466				466	466
Dispositions (in shares)	8
Balance at Dec. 31, 2022	$ 202,473	15,752	432,860	(13,270)	(240,293)	195,049	7,424
Balance (in shares) - issued at Dec. 31, 2022	8,019
Balance (in shares) - in treasury at Dec. 31, 2022	(3,937)
Balance (in shares) - outstanding at Dec. 31, 2022	4,082
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Amortization of stock-based awards	$ 565	565				565
Other	(427)	(514)	(2)			(516)	89
Net income (loss) for the year	37,354		36,010			36,010	1,344
Dividends - common shares (company)			(14,941)			(14,941)
Dividends - common shares (NCI)							(531)
Dividends - common shares (total)	(15,472)
Other comprehensive income	1,542			1,281		1,281	261
Share repurchases, at cost (company)					(17,993)	(17,993)
Share repurchase, at cost, noncontrolling interest							(851)
Share repurchase, at cost, including noncontrolling interest	$ (18,844)
Share repurchases, at cost (in shares)	(165)
Issued for acquisitions	$ 4,844	1,978			2,866	4,844
Issued for acquisitions (in shares)	46
Dispositions	$ 503				503	503
Dispositions (in shares)	8
Balance at Dec. 31, 2023	$ 212,538	$ 17,781	$ 453,927	$ (11,989)	$ (254,917)	$ 204,802	$ 7,736
Balance (in shares) - issued at Dec. 31, 2023	8,019
Balance (in shares) - in treasury at Dec. 31, 2023	(4,048)
Balance (in shares) - outstanding at Dec. 31, 2023	3,971

Summary Of Accounting Policies

Summary Of Accounting Policies	12 Months Ended
	Dec. 31, 2023
Accounting Policies [Abstract]
Summary Of Accounting Policies	Summary of Accounting Policies Principles of Consolidation and Accounting for Investments The Consolidated Financial Statements include the accounts of subsidiaries the Corporation controls and any variable interest entities where it is deemed the primary beneficiary. They also include the Corporation’s share of the undivided interest in certain upstream assets, liabilities, revenues, and expenses. Amounts representing the Corporation’s interest in entities that it does not control, but over which it exercises significant influence, are included in “Investments, advances and long-term receivables”. Under the equity method of accounting, the Corporation recognizes its share of the net income of these companies in “Income from equity affiliates”. Majority ownership is normally the indicator of control that is the basis on which subsidiaries are consolidated. However, certain factors may indicate that a majority-owned investment is not controlled and, therefore, should be accounted for using the equity method of accounting. These factors occur where the minority shareholders are granted, by law or by contract, substantive participating rights. These include the right to approve operating policies, expense budgets, financing and investment plans, and management compensation and succession plans. Investments accounted for by the equity method are assessed for possible impairment when events or changes in circumstances indicate that the carrying value of an investment may not be recoverable. Examples of key indicators include a history of operating losses, negative earnings and cash flow outlook, significant downward revisions to oil and gas reserves, and the financial condition and prospects for the investee’s business segment or geographic region. If the decline in value of the investment is other than temporary, the carrying value of the investment is written down to fair value. In the absence of market prices for the investment, discounted cash flows are used to assess fair value. The Corporation’s share of the cumulative foreign exchange translation adjustment for equity method investments is reported in “Accumulated other comprehensive income”. Investments in equity securities, other than consolidated subsidiaries and equity method investments, are measured at fair value with changes in fair value recognized in net income. The Corporation uses the modified approach for equity securities that do not have a readily determinable fair value. This modified approach measures investments at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions in a similar investment of the same issuer. Revenue Recognition The Corporation generally sells crude oil, natural gas, and petroleum and chemical products under short-term agreements at prevailing market prices. In some cases (e.g., natural gas), products may be sold under long-term agreements, with periodic price adjustments to reflect market conditions. Revenue is recognized at the amount the Corporation expects to receive when the customer has taken control, which is typically when title transfers and the customer has assumed the risks and rewards of ownership. The prices of certain sales are based on price indices that are sometimes not available until the next period. In such cases, estimated realizations are accrued when the sale is recognized, and are finalized when the price is available. Such adjustments to revenue from performance obligations satisfied in previous periods are not significant. Payment for revenue transactions is typically due within 30 days. Future volume delivery obligations that are unsatisfied at the end of the period are expected to be fulfilled through ordinary production or purchases. These performance obligations are based on market prices at the time of the transaction and are fully constrained due to market price volatility. Purchases and sales of inventory with the same counterparty that are entered into in contemplation of one another are combined and recorded as exchanges measured at the book value of the item sold. “Sales and other operating revenue” and “Notes and accounts receivable” include revenue and receivables both within the scope of ASC 606 "Revenue from Contracts with Customers” and those outside the scope of ASC 606. Long-term receivables are primarily from receivables outside the scope of ASC 606. Contract assets are mainly from marketing assistance programs and are not significant. Contract liabilities are mainly customer prepayments and accruals of expected volume discounts and are not significant. Income and Other Taxes The Corporation excludes from the Consolidated Statement of Income certain sales and value-added taxes imposed on and concurrent with revenue-producing transactions with customers and collected on behalf of governmental authorities. Similar taxes, for which the Corporation is not considered to be an agent for the government, are reported on a gross basis (included in both “Sales and other operating revenue” and “Other taxes and duties”). The Corporation accounts for U.S. tax on global intangible low-taxed income as an income tax expense in the period in which it is incurred. Derivative Instruments The Corporation may use derivative instruments for trading purposes and to offset exposures associated with commodity prices, foreign currency exchange rates, and interest rates that arise from existing assets, liabilities, firm commitments, and forecasted transactions. All derivative instruments, except those designated as normal purchase and normal sale, are recorded at fair value. Derivative assets and liabilities with the same counterparty are netted if the right of offset exists and certain other criteria are met. Collateral payables or receivables are netted against derivative assets and derivative liabilities, respectively. Recognition and classification of the gain or loss that results from adjusting a derivative to fair value depends on the purpose for the derivative. All gains and losses from derivative instruments for which the Corporation does not apply hedge accounting are immediately recognized in earnings. The Corporation may designate derivatives as fair value or cash flow hedges. For fair value hedges, the gain or loss from derivative instruments and the offsetting gain or loss from the hedged item are recognized in earnings. For cash flow hedges, the gain or loss from the derivative instrument is initially reported as a component of other comprehensive income and subsequently reclassified into earnings in the period that the forecasted transaction affects earnings. Fair Value Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. Hierarchy levels 1, 2, and 3 are terms for the priority of inputs to valuation techniques used to measure fair value. Hierarchy level 1 inputs are quoted prices in active markets for identical assets or liabilities. Hierarchy level 2 inputs are inputs other than quoted prices included within level 1 that are directly or indirectly observable for the asset or liability. Hierarchy level 3 inputs are inputs that are not observable in the market. Inventories Crude oil, products, and merchandise inventories are carried at the lower of current market value or cost (generally determined under the last-in, first-out method – LIFO). Inventory costs include expenditures and other charges (including depreciation) directly and indirectly incurred in bringing the inventory to its existing condition and location. Selling expenses and general and administrative expenses are reported as period costs and excluded from inventory cost. Inventories of materials and supplies are valued at cost or less. Property, Plant, and Equipment Cost Basis. The Corporation uses the “successful efforts” method to account for its exploration and production activities. Under this method, costs are accumulated on a field-by-field basis. Costs incurred to purchase, lease, or otherwise acquire a property (whether unproved or proved) are capitalized when incurred. Exploratory well costs are carried as an asset when the well has found a sufficient quantity of reserves to justify its completion as a producing well and where the Corporation is making sufficient progress assessing the reserves and the economic and operating viability of the project. Exploratory well costs not meeting these criteria are charged to expense. Other exploratory expenditures, including geophysical costs and annual lease rentals, are expensed as incurred. Development costs, including costs of productive wells and development dry holes, are capitalized. Interest costs incurred to finance expenditures during the construction phase of multiyear projects are capitalized as part of the historical cost of acquiring the constructed assets. The project construction phase commences with the development of the detailed engineering design and ends when the constructed assets are ready for their intended use. Capitalized interest costs are included in property, plant, and equipment and are depreciated over the service life of the related assets. Depreciation, Depletion, and Amortization. Depreciation, depletion, and amortization are primarily determined under either the unit-of-production method or the straight-line method, which is based on estimated asset service life, taking obsolescence into consideration. Acquisition costs of proved properties are amortized using a unit-of-production method, computed on the basis of total proved oil and natural gas reserve volumes. Capitalized exploratory drilling and development costs associated with productive depletable extractive properties are amortized using the unit-of-production rates based on the amount of proved developed reserves of oil and gas that are estimated to be recoverable from existing facilities using current operating methods. Under the unit-of-production method, oil and natural gas volumes are considered produced once they have been measured through meters at custody transfer or sales transaction points at the outlet valve on the lease or field storage tank. In the event that the unit-of-production method does not result in an equitable allocation of cost over the economic life of an upstream asset, an alternative method is used. The straight-line method is used in limited situations where the expected life of the asset does not reasonably correlate with that of the underlying reserves. For example, certain assets used in the production of oil and natural gas have a shorter life than the reserves, and as such, the Corporation uses straight-line depreciation to ensure the asset is fully depreciated by the end of its useful life. To the extent that proved reserves for a property are substantially de-booked and that property continues to produce such that the resulting depreciation charge does not result in an equitable allocation of cost over the expected life, assets will be depreciated using a unit-of-production method based on reserves determined at the most recent SEC price which results in a more meaningful quantity of proved reserves, appropriately adjusted for production and technical changes. Investments in refinery, chemical process, and lubes basestock manufacturing equipment are generally depreciated on a straight-line basis over a 25-year life. Service station buildings and fixed improvements are generally depreciated over a 20-year life. Maintenance and repairs, including planned major maintenance, are expensed as incurred. Major renewals and improvements are capitalized, and the assets replaced are retired. Impairment Assessment. The Corporation tests assets or groups of assets for recoverability on an ongoing basis whenever events or changes in circumstances indicate that the carrying amounts may not be recoverable. Among the events or changes in circumstances which could indicate that the carrying value of an asset or asset group may not be recoverable are the following: • a significant decrease in the market price of a long-lived asset; • a significant adverse change in the extent or manner in which an asset is being used or in its physical condition, including a significant decrease in current and projected reserve volumes; • a significant adverse change in legal factors or in the business climate that could affect the value, including an adverse action or assessment by a regulator; • an accumulation of project costs significantly in excess of the amount originally expected; • a current-period operating loss combined with a history and forecast of operating or cash flow losses; and • a current expectation that, more likely than not, a long-lived asset will be sold or otherwise disposed of significantly before the end of its previously estimated useful life. The Corporation has a robust process to monitor for indicators of potential impairment across its asset groups throughout the year. This process is aligned with the requirements of ASC 360 and ASC 932, and relies, in part, on the Corporation’s planning and budgeting cycle. Asset valuation analysis, profitability reviews, and other periodic control processes assist the Corporation in assessing whether events or changes in circumstances indicate the carrying amounts of any of its assets may not be recoverable. Because the lifespans of the vast majority of the Corporation’s major assets are measured in decades, the future cash flows of these assets are predominantly based on long-term oil and natural gas commodity prices and industry margins, development costs, and production costs. Significant reductions in the Corporation’s view of oil or natural gas commodity prices or margin ranges, especially the longer-term prices and margins, and changes in the development plans, including decisions to defer, reduce, or eliminate planned capital spending, can be an indicator of potential impairment. Other events or changes in circumstances can be indicators of potential impairment as well. In general, the Corporation does not view temporarily low prices or margins as an indication of impairment. Management believes that prices over the long term must be sufficient to generate investments in energy supply to meet global demand. Although prices will occasionally drop significantly, industry prices over the long term will continue to be driven by market supply and demand fundamentals. On the supply side, industry production from mature fields is declining. This is being offset by investments to generate production from new discoveries, field developments, and technology and efficiency advancements. OPEC investment activities and production policies also have an impact on world oil supplies. The demand side is largely a function of general economic activities, alternative energy sources, and levels of prosperity. During the lifespan of its major assets, the Corporation expects that oil and gas prices and industry margins will experience significant volatility. Consequently, these assets will experience periods of higher earnings and periods of lower earnings, or even losses. In assessing whether events or changes in circumstances indicate the carrying value of an asset may not be recoverable, the Corporation considers recent periods of operating losses in the context of its longer-term view of prices and margins. In the Upstream, the standardized measure of discounted cash flows included in the Supplemental Information on Oil and Gas Exploration and Production Activities is required to use prices based on the average of first-of-month prices in the year. These prices represent discrete points in time and could be higher or lower than the Corporation’s price assumptions which are used for impairment assessments. The Corporation believes the standardized measure does not provide a reliable estimate of the expected future cash flows to be obtained from the development and production of its oil and gas properties or of the value of its oil and gas reserves, and therefore, does not consider it relevant in determining whether events or changes in circumstances indicate the need for an impairment assessment. Global Outlook and Cash Flow Assessment. The annual planning and budgeting process, known as the Corporate Plan, is the mechanism by which resources (capital, operating expenses, and people) are allocated across the Corporation. The foundation for the assumptions supporting the Corporate Plan is the Global Outlook (Outlook), which contains the Corporation’s demand and supply projections based on its assessment of current trends in technology, government policies, consumer preferences, geopolitics, economic development, and other factors. Reflective of the existing global policy environment, the Outlook does not attempt to project the degree of necessary future policy and technology advancement and deployment for the world, or the Corporation, to meet net zero by 2050. As future policies and technology advancements emerge, they will be incorporated into the Outlook, and the Corporation’s business plans will be updated accordingly. If events or changes in circumstances indicate that the carrying value of an asset may not be recoverable, the Corporation estimates the future undiscounted cash flows of the affected properties to judge the recoverability of carrying amounts. In performing this assessment, assets are grouped at the lowest level for which there are identifiable cash flows that are largely independent of the cash flows of other groups of assets. Cash flows used in recoverability assessments are based on the assumptions developed in the Corporate Plan, which is reviewed and approved by the Board of Directors, and are consistent with the criteria management uses to evaluate investment opportunities. These evaluations make use of the Corporation’s assumptions of future capital allocations, crude oil and natural gas commodity prices including price differentials, refining and chemical margins, volumes, development and operating costs including greenhouse gas emission prices, and foreign currency exchange rates. Notably, when assessing future cash flows, the Corporation includes the estimated costs in support of reaching its 2030 greenhouse gas emission-reduction plans, including its goal of net-zero Scope 1 and 2 greenhouse gas emissions from unconventional operated assets in the Permian Basin. Volumes are based on projected field and facility production profiles, throughput, or sales. Management’s estimate of upstream production volumes used for projected cash flows makes use of proved reserve quantities and may include risk-adjusted unproved reserve quantities. Cash flow estimates for impairment testing exclude the effects of derivative instruments. As part of the Corporate Plan, the Company considers estimated greenhouse gas emission costs, even for jurisdictions without a current greenhouse gas pricing policy. Fair Value of Impaired Assets. An asset group is impaired if its estimated undiscounted cash flows are less than the asset group's carrying value. Impairments are measured by the excess of the carrying value over fair value. The assessment of fair value is based upon the views of a likely market participant. The principal parameters used to establish fair value include estimates of acreage values and flowing production metrics from comparable market transactions, market-based estimates of historical cash flow multiples, and discounted cash flows. Inputs and assumptions used in discounted cash flow models include estimates of future production volumes, throughput and product sales volumes, commodity prices (which are consistent with the average of third-party industry experts and government agencies), refining and chemical margins, drilling and development costs, operating costs, and discount rates which are reflective of the characteristics of the asset group. Other Impairments Related to Property, Plant and Equipment. Unproved properties are assessed periodically to determine whether they have been impaired. Significant unproved properties are assessed for impairment individually, and valuation allowances against the capitalized costs are recorded based on the Corporation's future development plans, the estimated economic chance of success, and the length of time that the Corporation expects to hold the properties. Properties that are not individually significant are aggregated by groups and amortized based on development risk and average holding period. Long-lived assets that are held for sale are evaluated for possible impairment by comparing the carrying value of the asset with its fair value less the cost to sell. If the net book value exceeds the fair value less cost to sell, the assets are considered impaired and adjusted to the lower value. Gains on sales of proved and unproved properties are only recognized when there is neither uncertainty about the recovery of costs applicable to any interest retained nor any substantial obligation for future performance by the Corporation. Environmental Liabilities Liabilities for environmental costs are recorded when it is probable that obligations have been incurred and the amounts can be reasonably estimated. These liabilities are not reduced by possible recoveries from third parties, and projected cash expenditures are not discounted. Foreign Currency Translation The Corporation selects the functional reporting currency for its international subsidiaries based on the currency of the primary economic environment in which each subsidiary operates. Operations in the Product Solutions businesses use the local currency. However, the U.S. dollar is used in countries with a history of high inflation (primarily in Latin America) and in Singapore, which predominantly sells into the U.S. dollar export market. Upstream operations which are relatively self-contained and integrated within a particular country, such as in Canada and Europe, use the local currency. Some Upstream operations, primarily in Asia and Africa, use the U.S. dollar because they predominantly sell crude and natural gas production into U.S. dollar-denominated markets. For all operations, gains or losses from remeasuring foreign currency transactions into the functional currency are included in income.

Russia

Russia	12 Months Ended
	Dec. 31, 2023
Impairment or Disposal of Tangible Assets Disclosure [Abstract]
Russia	Russia In response to Russia’s military action in Ukraine, the Corporation announced in early 2022 that it planned to discontinue operations on the Sakhalin-1 project (“Sakhalin”) and develop steps to exit the venture. In light of this, an impairment assessment was conducted, and management determined that the carrying value of the asset group was not recoverable. As a result, the Corporation’s first-quarter 2022 earnings included after-tax charges of $3.4 billion largely representing the full impairment of its operations related to Sakhalin. On a before-tax basis, the charges amounted to $4.6 billion, substantially all of which is reflected in the line captioned “Depreciation and depletion (including impairments)” on the Consolidated Statement of Income. Effective October 14, 2022, the Russian government unilaterally terminated the Corporation’s interests in Sakhalin, transferring operations to a Russian operator. The Corporation’s fourth-quarter 2022 results include an after-tax benefit of $1.1 billion largely reflecting the impact of the expropriation on the company’s various obligations related to Sakhalin. The Corporation's exit from the project resulted in approximately 150 million oil-equivalent barrels no longer qualifying as proved reserves at year-end 2022.

Miscellaneous Financial Informa

Miscellaneous Financial Information	12 Months Ended
	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Miscellaneous Financial Information	Miscellaneous Financial Information Research and development expenses totaled $879 million in 2023, $824 million in 2022, and $843 million in 2021. Net income included before-tax aggregate foreign exchange transaction losses of $51 million, $218 million, and $18 million in 2023, 2022, and 2021, respectively. LIFO Inventory. In 2023, 2022, and 2021, net income included gains of $366 million, $367 million, and $54 million, respectively, attributable to the combined effects of LIFO inventory accumulations and drawdowns. The aggregate replacement cost of inventories was estimated to exceed their LIFO carrying values by approximately $14 billion and $15 billion at December 31, 2023 and 2022, respectively. Crude oil, products, and merchandise as of year-end 2023 and 2022 consist of the following: (millions of dollars) Dec 31, 2023 Dec 31, 2022 Crude oil 6,944 6,909 Petroleum products 6,248 6,291 Chemical products (1) 3,930 3,806 Gas/other 3,406 3,428 Total 20,528 20,434 (1) Chemical products includes basic chemicals (olefins and aromatics), polymers (such as polyolefins, adhesions, specialty elastomers, & butyl), intermediates (e.g. hydrocarbon fluids, plasticizers) and synthetics. Government Assistance. ASC 832 "Government Assistance" requires disclosure of certain types of government assistance not otherwise covered by authoritative accounting guidance. During 2023 and 2022, certain governments outside the United States provided payments which, individually and in aggregate, were immaterial to the Corporation's financial results. Among these are programs where governments endeavor to stabilize or cap fuel and energy costs for local consumers. To compensate producers who sell at the government-mandated prices, these governments provide reimbursements to the producers. In 2023 such reimbursements were negligible and in 2022 these reimbursements totaled approximately $1.5 billion before tax, which were reflected as reductions to the line captioned " Crude oil and product purchases

Other Comprehensive Income Info

Other Comprehensive Income Information	12 Months Ended
	Dec. 31, 2023
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Other Comprehensive Income Information	Other Comprehensive Income Information ExxonMobil Share of Accumulated Other Comprehensive Income (millions of dollars) Cumulative Foreign Exchange Translation Adjustment Postretirement Benefits Reserves Adjustment Total Balance as of December 31, 2020 (10,614) (6,091) (16,705) Current period change excluding amounts reclassified from accumulated other comprehensive income (883) 2,938 2,055 Amounts reclassified from accumulated other comprehensive income (2) 888 886 Total change in accumulated other comprehensive income (885) 3,826 2,941 Balance as of December 31, 2021 (11,499) (2,265) (13,764) Current period change excluding amounts reclassified from accumulated other comprehensive income (1) (3,092) 3,205 113 Amounts reclassified from accumulated other comprehensive income — 381 381 Total change in accumulated other comprehensive income (3,092) 3,586 494 Balance as of December 31, 2022 (14,591) 1,321 (13,270) Current period change excluding amounts reclassified from accumulated other comprehensive income (1) 1,108 (305) 803 Amounts reclassified from accumulated other comprehensive income 427 51 478 Total change in accumulated other comprehensive income 1,535 (254) 1,281 Balance as of December 31, 2023 (13,056) 1,067 (11,989) (1) Cumulative Foreign Exchange Translation Adjustment includes net investment hedge gain/(loss) net of taxes of $(135) million and $230 million in 2023 and 2022, respectively. Amounts Reclassified Out of Accumulated Other Comprehensive Income - Before-tax Income/(Expense) (millions of dollars) 2023 2022 2021 Foreign exchange translation gain/(loss) included in net income (Statement of Income line: Other income) (609) — 2 Amortization and settlement of postretirement benefits reserves adjustment included in net periodic benefit costs (Statement of Income line: Non-service pension and postretirement benefit expense) (81) (519) (1,229) Income Tax (Expense)/Credit For Components of Other Comprehensive Income (millions of dollars) 2023 2022 2021 Foreign exchange translation adjustment 341 54 (114) Postretirement benefits reserves adjustment (excluding amortization) 200 (1,120) (983) Amortization and settlement of postretirement benefits reserves adjustment included in net periodic benefit costs (20) (116) (304) Total 521 (1,182) (1,401)

Cash Flow Information

Cash Flow Information	12 Months Ended
	Dec. 31, 2023
Supplemental Cash Flow Information [Abstract]
Cash Flow Information	Cash Flow Information The Consolidated Statement of Cash Flows provides information about changes in cash and cash equivalents. Highly liquid investments with maturities of three months or less when acquired are classified as cash equivalents. In 2023, the Corporation completed the acquisition of Denbury Inc. (Denbury) through the issuance of 46 million shares of ExxonMobil Corporation common stock having a fair value of $4.8 billion on the acquisition date. Additional information is provided in Note 21. In 2023, the Corporation completed the sale of Esso Thailand. The sale included cash proceeds as well as cash from debt that was issued to facilitate the sale, which was assumed by the buyer upon closing. For 2023, The “Net (gain)/loss on asset sales” on the Consolidated Statement of Cash Flows includes before-tax amounts mainly from the sale of upstream assets in the United States. For 2022, the number includes before-tax amounts from the sale of certain unproved assets in Romania and unconventional assets in Canada and the United States, as well as other smaller divestments. For 2021, the number includes before-tax amounts from the sale of non-operated upstream assets in the United Kingdom Central and Northern North Sea and the sale of ExxonMobil's global Santoprene business. These net (gain)/loss amounts are reported in "Other income" on the Consolidated Statement of Income. (millions of dollars) 2023 2022 2021 Income taxes paid 15,473 15,364 5,341 Cash interest paid Included in cash flows from operating activities 584 666 819 Capitalized, included in cash flows from investing activities 1,152 838 655 Total cash interest paid 1,736 1,504 1,474

Additional Working Capital Info

Additional Working Capital Information	12 Months Ended
	Dec. 31, 2023
Additional Working Capital Information [Abstract]
Additional Working Capital Information	Additional Working Capital Information (millions of dollars) Dec 31, 2023 Dec 31, 2022 Notes and accounts receivable Trade, less reserves of $170 million and $168 million 30,296 32,844 Other, less reserves of $101 million and $402 million 7,719 8,905 Total 38,015 41,749 Notes and loans payable Bank loans 6 379 Commercial paper 75 74 Long-term debt due within one year 4,009 181 Total 4,090 634 Accounts payable and accrued liabilities Trade payables 31,249 33,169 Payables to equity companies 11,885 14,585 Accrued taxes other than income taxes 3,817 3,969 Other 11,086 11,474 Total 58,037 63,197 Trade notes and accounts receivables include both receivables within the scope of ASC 606 and outside the scope of ASC 606. Receivables outside the scope of ASC 606 primarily relate to physically settled commodity contracts accounted for as derivatives. Credit quality and type of customer are generally similar between receivables within the scope of ASC 606 and those outside it. The Corporation has short-term committed lines of credit of $0.3 billion which were unused as of December 31, 2023. These lines are available for general corporate purposes.

Equity Company Information

Equity Company Information	12 Months Ended
	Dec. 31, 2023
Equity Method Investment, Financial Statement, Reported Amounts [Abstract]
Equity Company Information	Equity Company Information The summarized financial information below includes amounts related to certain less-than-majority-owned companies and majority-owned subsidiaries where minority shareholders possess the right to participate in significant management decisions (see Note 1). These companies are primarily engaged in oil and gas exploration and production, natural gas marketing, transportation of crude oil, and petrochemical manufacturing in North America; natural gas production and distribution in Europe; LNG operations in Africa; and exploration, production, LNG operations, and the manufacture and sale of petroleum and petrochemical products in Asia and the Middle East. Also included are several refining and marketing ventures. The share of total equity company revenues from sales to ExxonMobil consolidated companies was 9 percent, 11 percent, and 10 percent in the years 2023, 2022, and 2021, respectively. The Corporation’s ownership in these ventures is in the form of shares in corporate joint ventures as well as interests in partnerships. Differences between the company’s carrying value of an equity investment and its underlying equity in the net assets of the affiliate are assigned, to the extent practicable, to specific assets and liabilities based on the company’s analysis of the factors giving rise to the difference. The amortization of this difference, as appropriate, is included in “Income from equity affiliates” on the Consolidated Statement of Income. Impairments related to Upstream equity investments of $0.6 billion, $0.6 billion, and $0.2 billion in 2023, 2022, and 2021, respectively, are included in “Income from equity affiliates” or “Other income” on the Consolidated Statement of Income. Equity Company Financial Summary (millions of dollars) 2023 2022 2021 Total ExxonMobil Total ExxonMobil Share Total ExxonMobil Total revenues 132,783 40,682 183,812 57,528 116,972 34,995 Income before income taxes 35,999 10,078 61,550 19,279 35,142 9,278 Income taxes 11,404 3,085 23,149 7,603 11,010 2,763 Income from equity affiliates 24,595 6,993 38,401 11,676 24,132 6,515 Current assets 53,081 18,713 77,457 24,994 45,267 15,542 Long-term assets 150,198 40,986 153,186 42,921 150,699 41,614 Total assets 203,279 59,699 230,643 67,915 195,966 57,156 Current liabilities 30,721 9,652 53,640 15,555 28,862 8,297 Long-term liabilities 57,237 17,059 62,009 18,929 63,138 19,084 Net assets 115,321 32,988 114,994 33,431 103,966 29,775 A list of significant equity companies as of December 31, 2023, together with the Corporation’s percentage ownership interest, is detailed below: Percentage Ownership Interest Upstream Barzan Gas Company Limited 7 BEB Erdgas und Erdoel GmbH & Co. KG 50 Caspian Pipeline Consortium 8 Coral FLNG S.A. 25 Cross Timbers Energy LLC 50 GasTerra B.V. 25 Golden Pass LNG Terminal LLC 30 Golden Pass Pipeline LLC 30 Marine Well Containment Company LLC 10 Mozambique Rovuma Venture S.p.A. 36 Nederlandse Aardolie Maatschappij B.V. 50 Papua New Guinea Liquefied Natural Gas Global Company LDC 33 Permian Highway Pipeline LLC 17 QatarEnergy LNG N (2) 24 QatarEnergy LNG NFE (3) 25 QatarEnergy LNG S (1) 25 QatarEnergy LNG S (2) 31 QatarEnergy LNG S (3) 30 South Hook LNG Terminal Company Limited 24 Tengizchevroil LLP 25 Terminale GNL Adriatico S.r.l. 71 Energy Products, Chemical Products, and/or Specialty Products Al-Jubail Petrochemical Company 50 Alberta Products Pipe Line Ltd. 45 Fujian Refining & Petrochemical Co. Ltd. 25 Gulf Coast Growth Ventures LLC 50 Infineum USA L.P. 50 Permian Express Partners LLC 12 Saudi Aramco Mobil Refinery Company Ltd. 50 Saudi Yanbu Petrochemical Co. 50

Investments, Advances And Long-

Investments, Advances And Long-Term Receivables	12 Months Ended
	Dec. 31, 2023
Long-Term Investments and Receivables, Net [Abstract]
Investments, Advances And Long-Term Receivables	Investments, Advances and Long-Term Receivables (millions of dollars) Dec 31, 2023 Dec 31, 2022 Equity method company investments and advances Investments 34,080 34,522 Advances, net of allowances of $33 million and $28 million 7,527 8,049 Total equity method company investments and advances 41,607 42,571 Equity securities carried at fair value and other investments at adjusted cost basis 177 278 Long-term receivables and miscellaneous, net of reserves of $1,966 million and $1,623 million 5,846 6,944 Total 47,630 49,793

Property, Plant And Equipment A

Property, Plant And Equipment And Asset Retirement Obligations	12 Months Ended
	Dec. 31, 2023
Property, Plant And Equipment And Asset Retirement Obligations [Abstract]
Property, Plant And Equipment And Asset Retirement Obligations	Property, Plant and Equipment and Asset Retirement Obligations Property, Plant and Equipment (millions of dollars) December 31, 2023 December 31, 2022 Cost Net Cost Net Upstream 359,031 148,245 350,748 144,146 Energy Products 57,400 27,284 58,393 26,765 Chemical Products 38,801 20,329 36,322 19,064 Specialty Products 9,385 4,378 8,895 4,303 Other 22,768 14,704 18,335 10,414 Total 487,385 214,940 472,693 204,692 In 2023, the Corporation identified situations where events or changes in circumstances indicated that the carrying value of certain long-lived assets may not be recoverable and conducted impairment assessments. Before-tax charges of $3.3 billion were recognized, in large part due to impairing the idled Upstream Santa Ynez Unit assets and associated facilities in California, reflecting the continuing challenges in the state regulatory environment that impeded progress in restoring operations. Other before-tax impairment charges recognized during 2023 included $0.3 billion in Upstream, $0.3 billion in Chemical Products, and $0.1 billion in Specialty Products. In 2022, before-tax impairment charges of $4.5 billion were recognized during the first quarter as a result of the Corporation's plans to discontinue operations on the Sakhalin-1 project and develop steps to exit the venture in response to Russia's military action in Ukraine (Refer to Note 2 for additional information). Other before-tax impairment charges recognized during 2022 included $1.5 billion in Upstream and $0.4 billion in Energy Products. In 2021, the Corporation recognized before-tax impairment charges of $1.2 billion largely as a result of changes to Upstream development plans. Impairment charges are primarily recognized in the lines “ Depreciation and depletion” and “Exploration expenses, including dry holes Asset Retirement Obligations The Corporation incurs retirement obligations for certain assets. The fair values of these obligations are recorded as liabilities on a discounted basis, which is typically at the time the assets are installed. In the estimation of fair value, the Corporation uses assumptions and judgments regarding such factors as the existence of a legal obligation for an asset retirement obligation, technical assessments of the assets, estimated amounts and timing of settlements, discount rates, and inflation rates. Asset retirement obligations incurred in the current period were Level 3 fair value measurements. The costs associated with these liabilities are capitalized as part of the related assets and depreciated as the reserves are produced. Over time, the liabilities are accreted for the change in their present value. Asset retirement obligations for facilities in the Product Solutions business generally become firm at the time a decision is made to permanently shut down and dismantle the facilities. These obligations may include the costs of asset disposal and additional soil remediation. However, these sites generally have indeterminate lives based on plans for continued operations and as such, the fair value of the conditional legal obligations cannot be measured, since it is impossible to estimate the future settlement dates of such obligations. The following table summarizes the activity in the liability for asset retirement obligations: (millions of dollars) 2023 2022 2021 Balance at January 1 10,491 10,630 11,247 Accretion expense and other provisions 734 744 548 Reduction due to property sales (288) (328) (1,002) Payments made (693) (518) (444) Liabilities incurred 831 119 42 Foreign currency translation 124 (330) (147) Revisions 1,790 174 386 Balance at December 31 12,989 10,491 10,630 The long-term Asset Retirement Obligations were $11,942 million and $9,650 million at December 31, 2023 and 2022, respectively, and are included in “Other long-term obligations” on the Consolidated Balance Sheet. Estimated cash payments in 2024 and 2025 are $1,047 million and $899 million, respectively.

Accounting For Suspended Explor

Accounting For Suspended Exploratory Well Costs	12 Months Ended
	Dec. 31, 2023
Capitalized Exploratory Well Costs [Abstract]
Accounting For Suspended Exploratory Well Costs	Accounting for Suspended Exploratory Well Costs The Corporation continues capitalization of exploratory well costs when the well has found a sufficient quantity of reserves to justify its completion as a producing well and the Corporation is making sufficient progress assessing the reserves and the economic and operating viability of the project. The term “project” as used in this report can refer to a variety of different activities and does not necessarily have the same meaning as in any government payment transparency reports. The following two tables provide details of the changes in the balance of suspended exploratory well costs, including an aging summary of those costs. Change in capitalized suspended exploratory well costs (millions of dollars) 2023 2022 2021 Balance beginning at January 1 3,512 4,120 4,382 Additions pending the determination of proved reserves 200 378 420 Charged to expense (95) (259) (325) Reclassifications to wells, facilities and equipment based on the determination of proved reserves (142) (142) (328) Divestments/Other 84 (585) (29) Ending balance at December 31 3,559 3,512 4,120 Ending balance attributed to equity companies included above 306 306 306 Period-end capitalized suspended exploratory well costs (millions of dollars) 2023 2022 2021 Capitalized for a period of one year or less 200 378 420 Capitalized for a period of between one and five years 1,030 969 1,642 Capitalized for a period of between five and ten years 1,411 1,410 1,657 Capitalized for a period of greater than ten years 918 755 401 Capitalized for a period greater than one year - subtotal 3,359 3,134 3,700 Total 3,559 3,512 4,120 Exploration activity often involves drilling multiple wells, over a number of years, to fully evaluate a project. The table below provides a breakdown of the number of projects with only exploratory well costs capitalized for a period of one year or less and those that have had exploratory well costs capitalized for a period greater than one year. 2023 2022 2021 Number of projects that only have exploratory well costs capitalized for a period of one year or less — 10 4 Number of projects that have exploratory well costs capitalized for a period greater than one year 31 26 30 Total 31 36 34 Of the 31 projects that have exploratory well costs capitalized for a period greater than one year as of December 31, 2023, 16 projects have drilling in the preceding year or exploratory activity planned in the next two years, while the remaining 15 projects are those with completed exploratory activity progressing toward development. The table below provides additional detail for those 15 projects, which total $2,389 million. Country/Project December 31, 2023 Years Wells Drilled / Acquired Comment (millions of dollars) Angola Block 32 Central NE Hub 66 2007 - 2021 Evaluating development plan to tie into existing infrastructure. Argentina La Invernada 72 2014 Evaluating development plan to tie into planned infrastructure. Australia Gorgon Area Ullage 308 1994 - 2015 Evaluating development plans to tie into existing LNG facilities. Canada Hibernia North 25 2019 Awaiting capacity in existing/planned infrastructure. Guyana Whiptail 178 2019 - 2022 Continuing discussions with the government regarding development plan. Kazakhstan Kairan 53 2004 - 2007 Evaluating commercialization and field development alternatives, while continuing discussions with the government regarding the development plan. Mozambique Rovuma LNG Phase 1 150 2017 Progressing development plan to tie into planned LNG facilities. Rovuma LNG Future Non-Straddling Train 120 2017 Evaluating/progressing development plan to tie into planned LNG facilities. Rovuma LNG Unitized Trains 35 2017 Evaluating/progressing development plan to tie into planned LNG facilities. Nigeria Bonga North 34 2004 - 2009 Progressing development plan to tie into existing/planned infrastructure. Papua New Guinea Papua LNG 246 2017 Evaluating/progressing development plans. Muruk 165 2017 - 2019 Evaluating/progressing development plans. P'nyang 116 2012 - 2018 Evaluating/progressing development plans. Tanzania Block 2 525 2012 - 2015 Evaluating development alternatives, while continuing discussions with the government regarding development plan. Vietnam Blue Whale 296 2011 - 2015 Evaluating/progressing development plans. Total 2023 (15 projects) 2,389

Leases

Leases	12 Months Ended
	Dec. 31, 2023
Lessee Disclosure [Abstract]
Leases	Leases The Corporation and its consolidated affiliates generally purchase the property, plant and equipment used in operations, but there are situations where assets are leased, primarily for drilling equipment, tankers, office buildings, railcars, and other moveable equipment. Right of use assets and lease liabilities are established on the balance sheet for leases with an expected term greater than one year by discounting the amounts fixed in the lease agreement for the duration of the lease which is reasonably certain, considering the probability of exercising any early termination and extension options. The portion of the fixed payment related to service costs for drilling equipment, tankers, and finance leases is excluded from the calculation of right of use assets and lease liabilities. Generally, assets are leased only for a portion of their useful lives and are accounted for as operating leases. In limited situations, assets are leased for nearly all of their useful lives and are accounted for as finance leases. Variable payments under these lease agreements are not significant. Residual value guarantees, restrictions, or covenants related to leases, and transactions with related parties are also not significant. In general, leases are capitalized using the incremental borrowing rate of the leasing affiliate. The Corporation’s activities as a lessor are not significant. Lease Cost (millions of dollars) Operating Leases Finance Leases 2023 2022 2021 2023 2022 2021 Operating lease cost 1,976 1,776 1,542 Short-term and other (net of sublease rental income) 1,563 1,389 1,351 Amortization of right of use assets 107 243 133 Interest on lease liabilities 140 210 158 Total (1) 3,539 3,165 2,893 247 453 291 (1) Includes $999 million, $908 million, and $681 million for drilling rigs and related equipment operating leases in 2023, 2022, and 2021, respectively. Balance Sheet (millions of dollars) Operating Leases Finance Leases December 31, 2023 December 31, 2022 December 31, 2023 December 31, 2022 Right of use assets Included in Other assets, including intangibles - net 6,849 6,451 Included in Property, plant and equipment - net 2,712 2,090 Total right of use assets 6,849 6,451 2,712 2,090 Lease liability due within one year Included in Accounts payable and accrued liabilities 1,617 1,527 5 5 Included in Notes and loans payable 95 69 Long-term lease liability Included in Other long-term obligations 4,393 4,067 Included in Long-term debt 1,821 1,389 Included in Long-term obligations to equity companies 121 126 Total lease liability (2) 6,010 5,594 2,042 1,589 Weighted-average remaining lease term (years) 8 9 26 22 Weighted-average discount rate (percent) 3.9 % 2.4 % 7.2 % 8.0 % (2) Includes $2,032 million and $1,646 million for drilling rigs and related equipment operating leases in 2023 and 2022, respectively. Maturity Analysis of Lease Liabilities (millions of dollars) Operating Leases Finance Leases December 31, 2023 2024 1,807 243 2025 1,464 237 2026 1,046 234 2027 577 224 2028 307 241 2029 and beyond 1,781 2,256 Total lease payments 6,982 3,435 Discount to present value (972) (1,393) Total lease liability 6,010 2,042 In addition to the lease liabilities in the table immediately above, at December 31, 2023, undiscounted commitments for leases not yet commenced totaled $4,063 million for operating leases and $2,256 million for finance leases. Estimated cash payments for operating and finance leases not yet commenced are $267 million and $331 million for 2024 and 2025 respectively. Not yet commenced finance leases primarily relate to a CO2 transportation and service agreement, and a long-term hydrogen purchase agreement. The underlying assets are primarily designed by, and are being constructed by, the lessors. Other Information (millions of dollars) Operating Leases Finance Leases 2023 2022 2021 2023 2022 2021 Cash paid for amounts included in the measurement of lease liabilities Cash flows from operating activities 1,135 1,119 1,135 20 20 20 Cash flows from investing activities 758 500 291 Cash flows from financing activities 86 149 110 Noncash right of use assets recorded for lease liabilities In exchange for lease liabilities during the period 2,161 1,997 1,405 529 73 200
Leases	Leases The Corporation and its consolidated affiliates generally purchase the property, plant and equipment used in operations, but there are situations where assets are leased, primarily for drilling equipment, tankers, office buildings, railcars, and other moveable equipment. Right of use assets and lease liabilities are established on the balance sheet for leases with an expected term greater than one year by discounting the amounts fixed in the lease agreement for the duration of the lease which is reasonably certain, considering the probability of exercising any early termination and extension options. The portion of the fixed payment related to service costs for drilling equipment, tankers, and finance leases is excluded from the calculation of right of use assets and lease liabilities. Generally, assets are leased only for a portion of their useful lives and are accounted for as operating leases. In limited situations, assets are leased for nearly all of their useful lives and are accounted for as finance leases. Variable payments under these lease agreements are not significant. Residual value guarantees, restrictions, or covenants related to leases, and transactions with related parties are also not significant. In general, leases are capitalized using the incremental borrowing rate of the leasing affiliate. The Corporation’s activities as a lessor are not significant. Lease Cost (millions of dollars) Operating Leases Finance Leases 2023 2022 2021 2023 2022 2021 Operating lease cost 1,976 1,776 1,542 Short-term and other (net of sublease rental income) 1,563 1,389 1,351 Amortization of right of use assets 107 243 133 Interest on lease liabilities 140 210 158 Total (1) 3,539 3,165 2,893 247 453 291 (1) Includes $999 million, $908 million, and $681 million for drilling rigs and related equipment operating leases in 2023, 2022, and 2021, respectively. Balance Sheet (millions of dollars) Operating Leases Finance Leases December 31, 2023 December 31, 2022 December 31, 2023 December 31, 2022 Right of use assets Included in Other assets, including intangibles - net 6,849 6,451 Included in Property, plant and equipment - net 2,712 2,090 Total right of use assets 6,849 6,451 2,712 2,090 Lease liability due within one year Included in Accounts payable and accrued liabilities 1,617 1,527 5 5 Included in Notes and loans payable 95 69 Long-term lease liability Included in Other long-term obligations 4,393 4,067 Included in Long-term debt 1,821 1,389 Included in Long-term obligations to equity companies 121 126 Total lease liability (2) 6,010 5,594 2,042 1,589 Weighted-average remaining lease term (years) 8 9 26 22 Weighted-average discount rate (percent) 3.9 % 2.4 % 7.2 % 8.0 % (2) Includes $2,032 million and $1,646 million for drilling rigs and related equipment operating leases in 2023 and 2022, respectively. Maturity Analysis of Lease Liabilities (millions of dollars) Operating Leases Finance Leases December 31, 2023 2024 1,807 243 2025 1,464 237 2026 1,046 234 2027 577 224 2028 307 241 2029 and beyond 1,781 2,256 Total lease payments 6,982 3,435 Discount to present value (972) (1,393) Total lease liability 6,010 2,042 In addition to the lease liabilities in the table immediately above, at December 31, 2023, undiscounted commitments for leases not yet commenced totaled $4,063 million for operating leases and $2,256 million for finance leases. Estimated cash payments for operating and finance leases not yet commenced are $267 million and $331 million for 2024 and 2025 respectively. Not yet commenced finance leases primarily relate to a CO2 transportation and service agreement, and a long-term hydrogen purchase agreement. The underlying assets are primarily designed by, and are being constructed by, the lessors. Other Information (millions of dollars) Operating Leases Finance Leases 2023 2022 2021 2023 2022 2021 Cash paid for amounts included in the measurement of lease liabilities Cash flows from operating activities 1,135 1,119 1,135 20 20 20 Cash flows from investing activities 758 500 291 Cash flows from financing activities 86 149 110 Noncash right of use assets recorded for lease liabilities In exchange for lease liabilities during the period 2,161 1,997 1,405 529 73 200

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2023
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Earnings per common share 2023 2022 2021 Net income (loss) attributable to ExxonMobil (millions of dollars) 36,010 55,740 23,040 Weighted-average number of common shares outstanding (millions of shares) (1) 4,052 4,205 4,275 Earnings (loss) per common share (dollars) (2) 8.89 13.26 5.39 Dividends paid per common share (dollars) 3.68 3.55 3.49 (1) Includes restricted shares not vested. (2) The earnings (loss) per common share and earnings (loss) per common share - assuming dilution are the same in each period shown.

Financial Instruments And Deriv

Financial Instruments And Derivatives	12 Months Ended
	Dec. 31, 2023
Financial Instruments And Derivatives [Abstract]
Financial Instruments And Derivatives	Financial Instruments and Derivatives The estimated fair value of financial instruments and derivatives at December 31, 2023, and December 31, 2022, and the related hierarchy level for the fair value measurement was as follows: December 31, 2023 Fair Value (millions of dollars) Level 1 Level 2 Level 3 Total Gross Assets & Liabilities Effect of Counterparty Netting Effect of Collateral Netting Difference in Carrying Value and Fair Value Net Carrying Value Assets Derivative assets (1) 4,544 1,731 — 6,275 (5,177) (528) — 570 Advances to/receivables from equity companies (2)(6) — 2,517 4,491 7,008 — — 519 7,527 Other long-term financial assets (3) 1,389 — 944 2,333 — — 202 2,535 Liabilities Derivative liabilities (4) 4,056 1,608 — 5,664 (5,177) (40) — 447 Long-term debt (5) 30,556 2,004 — 32,560 — — 3,102 35,662 Long-term obligations to equity companies (6) — — 1,896 1,896 — — (92) 1,804 Other long-term financial liabilities (7) — — 697 697 — — 45 742 December 31, 2022 Fair Value (millions of dollars) Level 1 Level 2 Level 3 Total Gross Assets & Liabilities Effect of Counterparty Netting Effect of Collateral Netting Difference in Carrying Value and Fair Value Net Carrying Value Assets Derivative assets (1) 4,309 3,455 — 7,764 (5,778) (969) — 1,017 Advances to/receivables from equity companies (2)(6) — 2,406 4,958 7,364 — — 685 8,049 Other long-term financial assets (3) 1,208 — 1,413 2,621 — — 346 2,967 Liabilities Derivative liabilities (4) 3,417 3,264 — 6,681 (5,778) (79) — 824 Long-term debt (5) 33,112 1,880 6 34,998 — — 4,173 39,171 Long-term obligations to equity companies (6) — — 2,467 2,467 — — (129) 2,338 Other long-term financial liabilities (7) — — 679 679 — — 38 717 (1) Included in the Balance Sheet lines: Notes and accounts receivable - net and Other assets, including intangibles - net. (2) Included in the Balance Sheet line: Investments, advances and long-term receivables. (3) Included in the Balance Sheet lines: Investments, advances and long-term receivables and Other assets, including intangibles - net. (4) Included in the Balance Sheet lines: Accounts payable and accrued liabilities and Other long-term obligations. (5) Excluding finance lease obligations. (6) Advances to/receivables from equity companies and long-term obligations to equity companies are mainly designated as hierarchy level 3 inputs. The fair value is calculated by discounting the remaining obligations by a rate consistent with the credit quality and industry of the company. (7) Included in the Balance Sheet line: Other long-term obligations. Includes contingent consideration related to a prior year acquisition where fair value is based on expected drilling activities and discount rates. At December 31, 2023, and December 31, 2022, respectively, the Corporation had $800 million and $1,494 million of collateral under master netting arrangements not offset against the derivatives on the Consolidated Balance Sheet, primarily related to initial margin requirements. Derivative Instruments. The Corporation’s size, strong capital structure, geographic diversity, and the complementary nature of its business segments reduce the Corporation’s enterprise-wide risk from changes in commodity prices, currency rates, and interest rates. In addition, the Corporation uses commodity-based contracts, including derivatives, to manage commodity price risk and to generate returns from trading. Commodity contracts held for trading purposes are presented in the Consolidated Statement of Income on a net basis in the line “Sales and other operating revenue” and in the Consolidated Statement of Cash Flows in “Cash Flows from Operating Activities”. The Corporation’s commodity derivatives are not accounted for under hedge accounting. At times, the Corporation also enters into currency and interest rate derivatives, none of which are material to the Corporation’s financial position as of December 31, 2023 and 2022, or results of operations for 2023, 2022, and 2021. Credit risk associated with the Corporation’s derivative position is mitigated by several factors, including the use of derivative clearing exchanges and the quality of and financial limits placed on derivative counterparties. The Corporation maintains a system of controls that includes the authorization, reporting, and monitoring of derivative activity. The net notional long/(short) position of derivative instruments at December 31, 2023, and December 31, 2022, was as follows: (millions) December 31, December 31, 2023 2022 Crude oil (barrels) (7) 4 Petroleum products (barrels) (43) (52) Natural gas (MMBTUs) (560) (64) Realized and unrealized gains/(losses) on derivative instruments that were recognized in the Consolidated Statement of Income are included in the following lines on a before-tax basis: (millions of dollars) 2023 2022 2021 Sales and other operating revenue 986 (1,763) (3,818) Crude oil and product purchases 79 314 48 Total 1,065 (1,449) (3,770)

Long-Term Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2023
Long-Term Debt, Unclassified [Abstract]
Long-Term Debt	Long-Term Debt At December 31, 2023, long-term debt consisted of $32,510 million due in U.S. dollars and $4,973 million representing the U.S. dollar equivalent at year-end exchange rates of amounts payable in foreign currencies. These amounts exclude that portion of long-term debt, totaling $4,009 million, which matures within one year and is included in current liabilities. On December 22, 2022, the Company irrevocably deposited sufficient cash with the Trustee to fund (i) the redemption of its 2.726% notes due 2023 and (ii) the redemption of its 1.571% notes due 2023. After the deposit of the funds, the Corporation was released from its obligation and the debt was extinguished. The amounts of long-term debt, excluding finance lease obligations, maturing in each of the four years after December 31, 2024, in millions of dollars, are: 2025 – $5,371; 2026 – $3,651; 2027 – $1,098; and 2028 – $1,207. At December 31, 2023, the Corporation's unused long-term lines of credit were $1.3 billion. The Corporation may use non-derivative financial instruments, such as its foreign currency-denominated debt, as hedges of its net investments in certain foreign subsidiaries. Under this method, the change in the carrying value of the financial instruments due to foreign exchange fluctuations is reported in accumulated other comprehensive income. As of December 31, 2023, the Corporation has designated its $5.0 billion of Euro-denominated debt and related accrued interest as a net investment hedge of its European business. The net investment hedge is deemed to be perfectly effective. Summarized long-term debt at year-end 2023 and 2022 are shown in the table below: (millions of dollars, except where stated otherwise) Average Rate (1) Dec 31, 2023 Dec 31, 2022 Exxon Mobil Corporation (2) 3.176% notes due 2024 — 1,000 2.019% notes due 2024 — 1,000 2.709% notes due 2025 1,750 1,750 2.992% notes due 2025 2,767 2,781 3.043% notes due 2026 2,500 2,500 2.275% notes due 2026 1,000 1,000 3.294% notes due 2027 1,000 1,000 2.440% notes due 2029 1,250 1,250 3.482% notes due 2030 2,000 2,000 2.610% notes due 2030 2,000 2,000 2.995% notes due 2039 750 750 4.227% notes due 2040 2,080 2,084 3.567% notes due 2045 1,000 1,000 4.114% notes due 2046 2,500 2,500 3.095% notes due 2049 1,500 1,500 4.327% notes due 2050 2,750 2,750 3.452% notes due 2051 2,750 2,750 Exxon Mobil Corporation - Euro-denominated 0.142% notes due 2024 — 1,600 0.524% notes due 2028 1,105 1,066 0.835% notes due 2032 1,105 1,066 1.408% notes due 2039 1,105 1,066 XTO Energy Inc. (3) 6.100% senior notes due 2036 189 189 6.750% senior notes due 2037 286 289 6.375% senior notes due 2038 223 224 Industrial revenue bonds due 2022-2051 3.080% 2,123 2,245 Finance leases & other obligations 5.985% 3,838 3,299 Debt issuance costs (88) (100) Total long-term debt 37,483 40,559 (1) Average effective or imputed interest rates at December 31, 2023. (2) Includes premiums of $97 million in 2023 and $115 million in 2022. (3) Includes premiums of $71 million in 2023 and $76 million in 2022.

Incentive Program

Incentive Program	12 Months Ended
	Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]
Incentive Program	Incentive Program The 2003 Incentive Program provides for grants of stock options, stock appreciation rights (SARs), restricted stock, and other forms of awards. Awards may be granted to eligible employees of the Corporation and those affiliates at least 50 percent owned. Outstanding awards are subject to certain forfeiture provisions contained in the program or award instrument. Options and SARs may be granted at prices not less than 100 percent of market value on the date of grant and have a maximum life of 10 years. The maximum number of shares of stock that may be issued under the 2003 Incentive Program is 220 million. Awards that are forfeited, expire, or are settled in cash, do not count against this maximum limit. The 2003 Incentive Program does not have a specified term. New awards may be made until the available shares are depleted, unless the Board terminates the plan early. At the end of 2023, remaining shares available for award under the 2003 Incentive Program were 54 million. Restricted Stock and Restricted Stock Units. Awards totaling 9,701 thousand, 9,392 thousand, and 8,133 thousand of restricted (nonvested) common stock units were granted in 2023, 2022, and 2021, respectively. Compensation expense for these awards is based on the price of the stock at the date of grant and is recognized in income over the requisite service period. Shares for these awards are issued to employees from treasury stock. The units that are settled in cash are recorded as liabilities, and their changes in fair value are recognized over the vesting period. During the applicable restricted periods, the shares and units may not be sold or transferred and are subject to forfeiture. The majority of the awards have graded vesting periods, with 50 percent of the shares and units in each award vesting after three years, and the remaining 50 percent vesting after seven years. Some management, professional, and technical participants will receive awards that vest in full after three years. Awards granted to a small number of senior executives have vesting periods of five years for 50 percent of the award and of 10 years for the remaining 50 percent of the award, except that for awards granted prior to 2020 the vesting of the 10-year portion of the award is delayed until retirement if later than 10 years. The following tables summarize information about restricted stock and restricted stock units for the year ended December 31, 2023. Restricted stock and units outstanding 2023 Shares Weighted-Average (thousands) (dollars) Issued and outstanding at January 1 37,573 67.47 Awards issued in 2023 9,247 110.84 Vested (8,572) 67.75 Forfeited (436) 73.62 Issued and outstanding at December 31 37,812 77.94 Value of restricted stock units 2023 2022 2021 Grant price (dollars) 103.16 110.46 62.76 Value at date of grant: (millions of dollars) Units settled in stock 900 931 461 Units settled in cash 101 106 49 Total value 1,001 1,037 510 As of December 31, 2023, there was $2,120 million of unrecognized compensation cost related to the nonvested restricted awards. This cost is expected to be recognized over a weighted-average period of 4.7 years. The compensation cost charged against income for the restricted stock and restricted stock units was $611 million, $648 million, and $612 million for 2023, 2022, and 2021, respectively. The income tax benefit recognized in income related to this compensation expense was $50 million, $52 million, and $49 million for the same periods, respectively. The fair value of shares and units vested in 2023, 2022, and 2021 was $892 million, $1,027 million, and $562 million, respectively. Cash payments of $79 million, $89 million, and $48 million for vested restricted stock units settled in cash were made in 2023, 2022, and 2021, respectively.

Litigation And Other Contingenc

Litigation And Other Contingencies	12 Months Ended
	Dec. 31, 2023
Loss Contingency [Abstract]
Litigation And Other Contingencies	Litigation and Other Contingencies Litigation. A variety of claims have been made against ExxonMobil and certain of its consolidated subsidiaries in a number of pending lawsuits. Management has regular litigation reviews, including updates from corporate and outside counsel, to assess the need for accounting recognition or disclosure of these contingencies. The Corporation accrues an undiscounted liability for those contingencies where the incurrence of a loss is probable and the amount can be reasonably estimated. If a range of amounts can be reasonably estimated and no amount within the range is a better estimate than any other amount, then the minimum of the range is accrued. The Corporation does not record liabilities when the likelihood that the liability has been incurred is probable but the amount cannot be reasonably estimated or when the liability is believed to be only reasonably possible or remote. For contingencies where an unfavorable outcome is reasonably possible and which are significant, the Corporation discloses the nature of the contingency and, where feasible, an estimate of the possible loss. For purposes of our contingency disclosures, “significant” includes material matters, as well as other matters, which management believes should be disclosed. State and local governments and other entities in various jurisdictions across the United States and its territories have filed a number of legal proceedings against several oil and gas companies, including ExxonMobil, requesting unprecedented legal and equitable relief for various alleged injuries purportedly connected to climate change. These lawsuits assert a variety of novel, untested claims under statutory and common law. Additional such lawsuits may be filed. We believe the legal and factual theories set forth in these proceedings are meritless and represent an inappropriate attempt to use the court system to usurp the proper role of policymakers in addressing the societal challenges of climate change. Local governments in Louisiana have filed unprecedented legal proceedings against a number of oil and gas companies, including ExxonMobil, requesting compensation for the restoration of coastal marsh erosion in the state. We believe the factual and legal theories set forth in these proceedings are meritless. While the outcome of any litigation can be unpredictable, we believe the likelihood is remote that the ultimate outcomes of these lawsuits will have a material adverse effect on the Corporation’s operations, financial condition, or financial statements taken as a whole. We will continue to defend vigorously against these claims. Other Contingencies. The Corporation and certain of its consolidated subsidiaries were contingently liable at December 31, 2023, for guarantees relating to notes, loans and performance under contracts. Where guarantees for environmental remediation and other similar matters do not include a stated cap, the amounts reflect management’s estimate of the maximum potential exposure. Where it is not possible to make a reasonable estimation of the maximum potential amount of future payments, future performance is expected to be either immaterial or have only a remote chance of occurrence. December 31, 2023 (millions of dollars) Equity Company Obligations (1) Other Third-Party Obligations Total Guarantees Debt-related 1,151 149 1,300 Other 711 5,796 6,507 Total 1,862 5,945 7,807 (1) ExxonMobil share. Additionally, the Corporation and its affiliates have numerous long-term sales and purchase commitments in their various business activities, all of which are expected to be fulfilled with no adverse consequences material to the Corporation’s operations or financial condition.

Pension And Other Postretiremen

Pension And Other Postretirement Benefits	12 Months Ended
	Dec. 31, 2023
Retirement Benefits [Abstract]
Pension And Other Postretirement Benefits	Pension and Other Postretirement Benefits The benefit obligations and plan assets associated with the Corporation’s principal benefit plans are measured on December 31. Pension Benefits Other Postretirement Benefits (millions of dollars, except where stated otherwise) U.S. Non-U.S. 2023 2022 2023 2022 2023 2022 Weighted-average assumptions used to determine benefit obligations at December 31 Discount rate (percent) 5.30 5.60 4.30 4.90 5.30 5.60 Long-term rate of compensation increase (percent) 4.50 4.50 4.50 5.20 4.50 4.50 Change in benefit obligation Benefit obligation at January 1 12,350 18,511 19,342 29,492 5,211 7,265 Service cost 466 712 323 570 78 138 Interest cost 664 518 922 614 276 216 Actuarial loss/(gain) (1) 550 (4,432) 1,393 (7,742) 176 (1,990) Benefits paid (2)(3) (870) (2,959) (1,214) (1,415) (545) (492) Foreign exchange rate changes — — 515 (2,258) 11 (47) Amendments, divestments and other (17) — 46 81 (193) 121 Benefit obligation at December 31 13,143 12,350 21,327 19,342 5,014 5,211 Accumulated benefit obligation at December 31 11,033 10,367 19,769 18,047 — — (1) Actuarial loss/(gain) primarily reflects lower discount rates. (2) Benefit payments for funded and unfunded plans. (3) For 2023 and 2022, other postretirement benefits paid are net of $19 million and $24 million of Medicare subsidy receipts, respectively. For selection of the discount rate for U.S. plans, several sources of information are considered, including interest rate market indicators and the effective discount rate determined by use of a yield curve based on high-quality, noncallable bonds applied to the estimated cash outflows for benefit payments. For major non-U.S. plans, the discount rate is determined by using a spot yield curve of high-quality, local-currency-denominated bonds at an average maturity approximating that of the liabilities. The measurement of the accumulated postretirement benefit obligation assumes a health care cost trend rate of 4.0 percent in 2025 and subsequent years. Pension Benefits Other Postretirement Benefits (millions of dollars) U.S. Non-U.S. 2023 2022 2023 2022 2023 2022 Change in plan assets Fair value at January 1 10,989 13,266 16,757 24,880 348 440 Actual return on plan assets 1,121 (3,265) 1,484 (5,287) 36 (66) Foreign exchange rate changes — — 492 (2,012) — — Company contribution — 3,596 615 655 38 27 Benefits paid (1) (743) (2,608) (878) (1,070) (51) (53) Other — — (39) (409) — — Fair value at December 31 11,367 10,989 18,431 16,757 371 348 (1) Benefit payments for funded plans. The funding levels of all qualified pension plans are in compliance with standards set by applicable law or regulation. As shown in the table below, certain smaller U.S. pension plans and a number of non-U.S. pension plans are not funded because local applicable tax rules and regulatory practices do not encourage funding of these plans. All defined benefit pension obligations, regardless of the funding status of the underlying plans, are fully supported by the financial strength of the Corporation or the respective sponsoring affiliate. Pension Benefits (millions of dollars) U.S. Non-U.S. 2023 2022 2023 2022 Assets in excess of/(less than) benefit obligation Balance at December 31 Funded plans (271) (23) 1,028 1,019 Unfunded plans (1,505) (1,338) (3,924) (3,604) Total (1,776) (1,361) (2,896) (2,585) The authoritative guidance for defined benefit pension and other postretirement plans requires an employer to recognize the overfunded or underfunded status of a defined benefit postretirement plan as an asset or liability in its statement of financial position and to recognize changes in that funded status in the year in which the changes occur through other comprehensive income. Pension Benefits Other Postretirement Benefits (millions of dollars) U.S. Non-U.S. 2023 2022 2023 2022 2023 2022 Assets in excess of/(less than) benefit obligation Balance at December 31 (1) (1,776) (1,361) (2,896) (2,585) (4,643) (4,863) Amounts recorded in the consolidated balance sheet consist of: Other assets — — 1,895 1,962 — — Current liabilities (201) (168) (225) (254) (288) (304) Postretirement benefits reserves (1,575) (1,193) (4,566) (4,293) (4,355) (4,559) Total recorded (1,776) (1,361) (2,896) (2,585) (4,643) (4,863) Amounts recorded in accumulated other comprehensive income consist of: Net actuarial loss/(gain) 744 897 1,364 846 (1,453) (1,726) Prior service cost (283) (295) 401 278 (459) (190) Total recorded in accumulated other comprehensive income 461 602 1,765 1,124 (1,912) (1,916) (1) Fair value of assets less benefit obligation shown on the preceding page. The long-term expected rate of return on funded assets shown below is established for each benefit plan by developing a forward-looking, long-term return assumption for each asset class, taking into account factors such as the expected real return for the specific asset class and inflation. A single, long-term rate of return is then calculated as the weighted average of the target asset allocation percentages and the long-term return assumption for each asset class. Pension Benefits Other Postretirement (millions of dollars, except where stated otherwise) U.S. Non-U.S. 2023 2022 2021 2023 2022 2021 2023 2022 2021 Weighted-average assumptions used to determine net periodic benefit cost for years ended December 31 Discount rate (percent) 5.60 3.00 2.80 4.90 2.20 1.60 5.60 3.10 2.80 Long-term rate of return on funded assets (percent) 5.20 4.60 5.30 4.20 3.50 4.10 4.70 3.80 4.60 Long-term rate of compensation increase (percent) 4.50 4.50 5.50 5.20 4.20 4.20 4.50 4.50 5.50 Components of net periodic benefit cost Service cost 466 712 919 323 570 774 78 138 188 Interest cost 664 518 558 922 614 526 276 216 221 Expected return on plan assets (532) (560) (722) (688) (815) (1,031) (14) (14) (19) Amortization of actuarial loss/(gain) 85 156 244 108 180 420 (122) 6 76 Amortization of prior service cost (29) (29) (23) 52 43 57 (42) (42) (42) Net pension enhancement and curtailment/settlement cost 29 205 489 5 4 32 — — — Net periodic benefit cost 683 1,002 1,465 722 596 778 176 304 424 Changes in amounts recorded in accumulated other comprehensive income: Net actuarial loss/(gain) (39) (607) (504) 602 (1,641) (2,361) 154 (1,910) (891) Amortization of actuarial (loss)/gain (114) (361) (733) (108) (183) (430) 122 (6) (76) Prior service cost/(credit) (17) — (72) 153 84 92 (312) — — Amortization of prior service (cost)/credit 29 29 23 (52) (40) (55) 42 42 42 Foreign exchange rate changes — — — 46 (199) (255) (2) (7) — Total recorded in other comprehensive income (141) (939) (1,286) 641 (1,979) (3,009) 4 (1,881) (925) Total recorded in net periodic benefit cost and other comprehensive income, before tax 542 63 179 1,363 (1,383) (2,231) 180 (1,577) (501) Costs for defined contribution plans were $383 million, $365 million, and $177 million in 2023, 2022, and 2021, respectively. A summary of the change in accumulated other comprehensive income is shown in the table below: Total Pension and Other Postretirement Benefits (millions of dollars) 2023 2022 2021 (Charge)/credit to other comprehensive income, before tax U.S. pension 141 939 1,286 Non-U.S. pension (641) 1,979 3,009 Other postretirement benefits (4) 1,881 925 Total (charge)/credit to other comprehensive income, before tax (504) 4,799 5,220 (Charge)/credit to income tax (see Note 4) 180 (1,236) (1,287) (Charge)/credit to investment in equity companies 16 235 110 (Charge)/credit to other comprehensive income including noncontrolling interests, after tax (308) 3,798 4,043 Charge/(credit) to equity of noncontrolling interests 54 (212) (217) (Charge)/credit to other comprehensive income attributable to ExxonMobil (254) 3,586 3,826 The Corporation’s investment strategy for benefit plan assets reflects a long-term view, a careful assessment of the risks inherent in plan assets and liabilities, and broad diversification to reduce the risk of the portfolio. The benefit plan assets are primarily invested in passive global equity and local currency fixed income index funds to diversify risk while minimizing costs. The equity funds hold ExxonMobil stock only to the extent necessary to replicate the relevant equity index. The fixed income funds are largely invested in investment grade corporate and government debt securities with interest rate sensitivity designed to approximate the interest rate sensitivity of plan liabilities. Target asset allocations for benefit plans are reviewed periodically and set based on considerations such as risk, diversification, liquidity, and funding level. The target asset allocations for the major benefit plans range from 10 to 35 percent in equity securities and the remainder in fixed income securities. The equity for the U.S. and certain non-U.S. plans include allocations to private equity partnerships that primarily focus on early-stage venture capital of less than 5 percent. The fair value measurement levels are accounting terms that refer to different methods of valuing assets. The terms do not represent the relative risk or credit quality of an investment. The 2023 fair value of the benefit plan assets, including the level within the fair value hierarchy, is shown in the tables below: U.S. Pension Non-U.S. Pension (millions of dollars) Fair Value Measurement at December 31, 2023, Using: Fair Value Measurement at December 31, 2023, Using: Level 1 Level 2 Level 3 Net Asset Value Total Level 1 Level 2 Level 3 Net Asset Value Total Asset category: Equity securities U.S. — — — 2,114 2,114 — — — 2,642 2,642 Non-U.S. — — — 1,344 1,344 52 (1) — — 1,688 1,740 Private equity — — — 375 375 — — — 294 294 Debt securities Corporate — 4,699 (2) — 1 4,700 — 61 (2) — 4,370 4,431 Government — 2,650 (2) — 2 2,652 134 (3) 171 (2) — 8,429 8,734 Asset-backed — — — 1 1 — 22 (2) — 221 243 Other — — — — — — — — 4 4 Real Estate — — — — — — — — 70 70 Cash — — — 178 178 189 17 (4) — 45 251 Total at fair value — 7,349 — 4,015 11,364 375 271 — 17,763 18,409 Insurance contracts at contract value 3 22 Total plan assets 11,367 18,431 (1) For non-U.S. equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges. (2) For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions. (3) For government debt securities that are traded on active exchanges, fair value is based on observable quoted prices. (4) For cash balances that are subject to withdrawal penalties or other adjustments, the fair value is treated as a Level 2 input. Other Postretirement (millions of dollars) Fair Value Measurement at December 31, 2023, Using: Level 1 Level 2 Level 3 Net Asset Value Total Asset category: Equity securities U.S. 84 (1) — — — 84 Non-U.S. 40 (1) — — — 40 Debt securities Corporate — 61 (2) — — 61 Government — 182 (2) — — 182 Asset-backed — 3 (2) — — 3 Cash — 1 — — 1 Total at fair value 124 247 — — 371 (1) For equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges. (2) For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions. The 2022 fair value of the benefit plan assets, including the level within the fair value hierarchy, is shown in the tables below: U.S. Pension Non-U.S. Pension (millions of dollars) Fair Value Measurement at December 31, 2022, Using: Fair Value Measurement at December 31, 2022, Using: Level 1 Level 2 Level 3 Net Asset Value Total Level 1 Level 2 Level 3 Net Asset Value Total Asset category: Equity securities U.S. — — — 1,726 1,726 — — — 2,318 2,318 Non-U.S. — — — 1,131 1,131 61 (1) — — 1,676 1,737 Private equity — — — 506 506 — — — 472 472 Debt securities Corporate — 4,582 (2) — 1 4,583 — 63 (2) — 4,199 4,262 Government — 2,869 (2) — 2 2,871 202 (3) 144 (2) — 7,189 7,535 Asset-backed — — — 1 1 — 22 (2) — 185 207 Cash — — — 168 168 88 40 (4) — 77 205 Total at fair value — 7,451 — 3,535 10,986 351 269 — 16,116 16,736 Insurance contracts at contract value 3 21 Total plan assets 10,989 16,757 (1) For non-U.S. equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges. (2) For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions. (3) For government debt securities that are traded on active exchanges, fair value is based on observable quoted prices. (4) For cash balances that are subject to withdrawal penalties or other adjustments, the fair value is treated as a Level 2 input. Other Postretirement (millions of dollars) Fair Value Measurement at December 31, 2022, Using: Level 1 Level 2 Level 3 Net Asset Value Total Asset category: Equity securities U.S. 70 (1) — — — 70 Non-U.S. 37 (1) — — — 37 Debt securities Corporate — 59 (2) — — 59 Government — 175 (2) — — 175 Asset-backed — 4 (2) — — 4 Cash — 3 — — 3 Total at fair value 107 241 — — 348 (1) For equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges. (2) For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions. A summary of pension plans with an accumulated benefit obligation and projected benefit obligation in excess of plan assets is shown in the table below: Pension Benefits (millions of dollars) U.S. Non-U.S. 2023 2022 2023 2022 For funded pension plans with an accumulated benefit obligation in excess of plan assets: Accumulated benefit obligation — — 1,145 1,098 Fair value of plan assets — — 562 400 For funded pension plans with a projected benefit obligation in excess of plan assets: Projected benefit obligation 11,638 11,012 2,334 1,956 Fair value of plan assets 11,367 10,989 1,465 1,012 For unfunded pension plans: Projected benefit obligation 1,505 1,338 3,924 3,604 Accumulated benefit obligation 1,173 1,045 3,592 3,261 All other postretirement benefit plans are unfunded or underfunded. Pension Benefits Other Postretirement Benefits (millions of dollars) U.S. Non-U.S. Gross Medicare Subsidy Receipt Contributions expected in 2024 — 275 — — Benefit payments expected in: 2024 1,053 1,200 363 — 2025 1,053 1,158 356 — 2026 1,064 1,144 347 1 2027 1,066 1,185 342 1 2028 1,087 1,216 339 1 2029 - 2033 5,644 6,116 1,710 3

Disclosures About Segments And

Disclosures About Segments And Related Information	12 Months Ended
	Dec. 31, 2023
Segment Reporting, Measurement Disclosures [Abstract]
Disclosures About Segments And Related Information	Disclosures about Segments and Related Information Our reportable segments are Upstream, Energy Products, Chemical Products, and Specialty Products. The factors used to identify these reportable segments are based on the nature of the operations that are undertaken by each segment. The Upstream segment is organized and operates to explore for and produce crude oil and natural gas. The Energy Products, Chemical Products, and Specialty Products segments are organized and operate to manufacture and sell petroleum products and petrochemicals. • Energy Products: Fuels, aromatics, and catalysts and licensing • Chemical Products: Olefins, polyolefins, and intermediates • Specialty Products: Finished lubricants, basestocks and waxes, synthetics, and elastomers and resins Earnings after income tax include transfers at estimated market prices. In Corporate and Financing, interest revenue relates to interest earned on cash deposits and marketable securities. Interest expense includes non-debt-related interest expense of $234 million in 2023, $117 million in 2022, and $103 million in 2021. (millions of dollars) Upstream Energy Products Chemical Products Specialty Products Corporate and Financing Corporate Total U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. As of December 31, 2023 Earnings (loss) after income tax 4,202 17,106 6,123 6,019 1,626 11 1,536 1,178 (1,791) 36,010 Earnings of equity companies included above 63 5,550 140 131 126 761 — (25) (361) 6,385 Sales and other operating revenue 9,500 16,074 103,868 164,515 7,951 14,314 6,044 12,363 68 334,697 Intersegment revenue 20,971 38,982 23,481 28,258 7,991 3,643 2,570 555 244 — Depreciation and depletion expense 8,863 7,737 765 797 605 706 93 222 853 20,641 Interest revenue — — — — — — — — 1,628 1,628 Interest expense 82 74 4 7 2 2 — 2 676 849 Income tax expense (benefit) 1,016 10,593 1,543 1,492 396 158 458 235 (462) 15,429 Additions to property, plant and equipment 10,372 8,217 1,106 1,455 600 1,775 81 370 5,062 29,038 Investments in equity companies 4,436 21,485 406 1,135 3,086 2,700 — 952 (120) 34,080 Total assets 67,452 138,914 32,123 42,337 17,599 17,076 2,620 8,379 49,817 376,317 As of December 31, 2022 Earnings (loss) after income tax 11,728 24,751 8,340 6,626 2,328 1,215 1,190 1,225 (1,663) 55,740 Earnings of equity companies included above 411 10,133 126 322 91 771 — (23) (368) 11,463 Sales and other operating revenue 14,579 30,585 117,824 188,153 10,670 16,949 6,152 13,727 36 398,675 Intersegment revenue 25,658 46,076 29,001 36,894 9,081 5,201 2,587 825 241 — Depreciation and depletion expense 5,791 14,013 741 1,246 542 446 95 193 973 24,040 Interest revenue — — — — — — — — 446 446 Interest expense 51 38 1 7 — 1 — 1 699 798 Income tax expense (benefit) 3,330 11,575 2,615 2,420 520 292 334 252 (1,162) 20,176 Additions to property, plant and equipment 5,940 6,441 1,141 964 1,026 1,692 37 200 897 18,338 Investments in equity companies 4,893 21,502 368 1,154 3,124 2,417 — 1,177 (113) 34,522 Total assets 66,695 139,764 31,729 41,836 17,342 15,875 2,839 8,316 44,671 369,067 As of December 31, 2021 Earnings (loss) after income tax 3,663 12,112 668 (1,014) 3,697 3,292 1,452 1,807 (2,636) 23,040 Earnings of equity companies included above 288 5,535 122 100 (139) 1,141 — (36) (354) 6,657 Sales and other operating revenue 8,883 12,914 78,500 130,406 11,995 16,633 4,858 12,473 30 276,692 Intersegment revenue 16,692 33,405 16,735 25,097 5,993 4,082 2,193 749 227 — Depreciation and depletion expense 6,831 9,918 700 1,036 505 450 97 195 875 20,607 Interest revenue — — — — — — — — 33 33 Interest expense 58 36 1 6 — 1 — 1 844 947 Income tax expense (benefit) 1,116 4,871 156 (165) 1,235 684 464 329 (1,054) 7,636 Additions to property, plant and equipment 3,308 5,308 979 874 538 712 28 136 658 12,541 Investments in equity companies 4,999 18,544 353 972 3,019 2,490 — 1,185 (337) 31,225 Total assets 67,294 141,978 26,932 37,698 16,695 14,555 2,878 8,030 22,863 338,923 Due to rounding, numbers presented may not add up precisely to the totals indicated. Revenue from Contracts with Customers Sales and other operating revenue include both revenue within the scope of ASC 606 and outside the scope of ASC 606. Revenue outside the scope of ASC 606 primarily relates to physically settled commodity contracts accounted for as derivatives. Contractual terms, credit quality, and type of customer are generally similar between contracts within the scope of ASC 606 and those outside it. Sales and other operating revenue (millions of dollars) 2023 2022 2021 Revenue from contracts with customers 256,455 304,758 228,968 Revenue outside the scope of ASC 606 78,242 93,917 47,724 Total 334,697 398,675 276,692 Geographic Sales and other operating revenue (millions of dollars) 2023 2022 2021 United States 127,374 149,225 104,236 Non-U.S. 207,323 249,450 172,456 Total 334,697 398,675 276,692 Significant non-U.S. revenue sources include: (1) Canada 28,994 32,970 22,166 United Kingdom 23,372 33,988 14,759 Singapore 15,331 19,029 15,031 France 14,803 17,727 13,236 Australia 9,883 11,316 7,646 Belgium 9,840 11,279 9,153 Germany 9,297 10,190 7,565 (1) Revenue is determined by primary country of operations. Excludes certain sales and other operating revenues in Non-U.S. operations where attribution to a specific country is not practicable. Long-lived assets (millions of dollars) December 31, 2023 2022 2021 United States 95,792 90,051 90,412 Non-U.S. 119,148 114,641 126,140 Total 214,940 204,692 216,552 Significant non-U.S. long-lived assets include: Canada 31,682 31,106 34,907 Singapore 12,490 11,972 11,969 Australia 11,212 11,372 12,988 Guyana 9,689 6,766 4,892 Kazakhstan 7,728 8,172 8,463 Papua New Guinea 7,433 7,338 7,534 United Arab Emirates 5,480 5,448 5,392 Brazil 4,203 3,649 4,337 China 3,669 2,350 984 Nigeria 3,319 4,090 5,235 Russia — — 4,055

Income And Other Taxes

Income And Other Taxes	12 Months Ended
	Dec. 31, 2023
Income And Other Taxes [Abstract]
Income And Other Taxes	Income and Other Taxes (millions of dollars) 2023 2022 2021 U.S. Non-U.S. Total U.S. Non-U.S. Total U.S. Non-U.S. Total Income tax expense (benefit) Federal and non-U.S. Current 1,987 12,111 14,098 696 15,071 15,767 236 6,948 7,184 Deferred - net 463 481 944 4,122 (539) 3,583 870 (914) (44) U.S. tax on non-U.S. operations 315 — 315 65 — 65 26 — 26 Total federal and non-U.S. 2,765 12,592 15,357 4,883 14,532 19,415 1,132 6,034 7,166 State 72 — 72 761 — 761 470 — 470 Total income tax expense (benefit) 2,837 12,592 15,429 5,644 14,532 20,176 1,602 6,034 7,636 All other taxes and duties Other taxes and duties 3,871 25,140 29,011 4,087 23,832 27,919 3,731 26,508 30,239 Included in production and manufacturing expenses 1,961 726 2,687 2,204 862 3,066 1,589 674 2,263 Included in SG&A expenses 183 310 493 151 319 470 170 283 453 Total other taxes and duties 6,015 26,176 32,191 6,442 25,013 31,455 5,490 27,465 32,955 Total 8,852 38,768 47,620 12,086 39,545 51,631 7,092 33,499 40,591 The above provisions for deferred income taxes include net expenses of $24 million in 2023, and $30 million in 2022, and net benefits of $53 million in 2021 related to changes in tax laws and rates. Additional European Taxes on the Energy Sector. On October 6, 2022, European Union (“EU”) Member States adopted an EU Council Regulation which, along with other measures, introduced a new tax described as an emergency intervention to address high energy prices. This regulation imposed a mandatory tax on certain companies active in the crude petroleum, coal, natural gas, and refinery sectors. The regulation required Member States to levy a minimum 33 percent tax on in-scope companies’ 2022 and/or 2023 “surplus profits", defined in the regulation as taxable profits exceeding 120 percent of the annual average profits during the 2018-2021 period. EU Member States were required to implement the tax, or an equivalent national measure, by December 31, 2022. The enactment of these regulations by Member States resulted in an after-tax charge of approximately $1.8 billion to the Corporation’s fourth-quarter 2022 results and approximately $0.2 billion in 2023, mainly reflected in the line “Income tax expense (benefit)” on the Consolidated Statement of Income. The reconciliation between income tax expense (credit) and a theoretical U.S. tax computed by applying a rate of 21 percent for 2023, 2022, and 2021 is as follows: (millions of dollars) 2023 2022 2021 Income (loss) before income taxes United States 14,786 28,281 9,478 Non-U.S. 37,997 49,472 21,756 Total 52,783 77,753 31,234 Theoretical tax 11,084 16,328 6,559 Effect of equity method of accounting (1,341) (2,407) (1,398) Non-U.S. taxes in excess of/(less than) theoretical U.S. tax (1) 5,888 6,423 2,809 State taxes, net of federal tax benefit 57 601 371 Other (259) (769) (705) Total income tax expense (credit) 15,429 20,176 7,636 Effective tax rate calculation Income tax expense (credit) 15,429 20,176 7,636 ExxonMobil share of equity company income taxes 3,058 7,594 2,756 Total income tax expense (credit) 18,487 27,770 10,392 Net income (loss) including noncontrolling interests 37,354 57,577 23,598 Total income (loss) before taxes 55,841 85,347 33,990 Effective income tax rate 33% 33% 31% (1) Includes the impact of the additional European taxes on the energy sector of $1,825 million in 2022 and $115 million in 2023. Deferred income taxes reflect the impact of temporary differences between the amount of assets and liabilities recognized for financial reporting purposes and such amounts recognized for tax purposes. Deferred tax liabilities/(assets) are comprised of the following at December 31: Tax effects of temporary differences for: (millions of dollars) 2023 2022 Property, plant and equipment 26,627 25,607 Other liabilities 7,534 7,401 Total deferred tax liabilities 34,161 33,008 Pension and other postretirement benefits (1,777) (1,754) Asset retirement obligations (3,532) (3,045) Tax loss carryforwards (4,317) (4,862) Other assets (6,361) (6,948) Total deferred tax assets (15,987) (16,609) Asset valuation allowances 2,641 2,650 Net deferred tax liabilities 20,815 19,049 In 2023, asset valuation allowances of $2,641 million decreased by $9 million and included net provisions of $104 million and foreign currency and other effects of $113 million. Balance sheet classification (millions of dollars) 2023 2022 Other assets, including intangibles, net (3,637) (3,825) Deferred income tax liabilities 24,452 22,874 Net deferred tax liabilities 20,815 19,049 The Corporation’s undistributed earnings from subsidiary companies outside the United States include amounts that have been retained to fund prior and future capital project expenditures. Deferred income taxes have not been recorded for potential future tax obligations, such as foreign withholding tax and state tax, as these undistributed earnings are expected to be indefinitely reinvested for the foreseeable future. As of December 31, 2023, it is not practicable to estimate the unrecognized deferred tax liability. However, unrecognized deferred taxes on remittance of these funds are not expected to be material. Unrecognized Tax Benefits. The Corporation is subject to income taxation in many jurisdictions around the world. The benefits of uncertain tax positions that the Corporation has taken or expects to take in its income tax returns are recognized in the financial statements if management concludes that it is more likely than not that the position will be sustained with the tax authorities. For a position that is likely to be sustained, the benefit recognized in the financial statements is measured at the largest amount that is greater than 50 percent likely of being realized. Unrecognized tax benefits reflect the difference between positions taken or expected to be taken on income tax returns and the amounts recognized in the financial statements. The following table summarizes the movement in unrecognized tax benefits: Gross unrecognized tax benefits (millions of dollars) 2023 2022 2021 Balance at January 1 3,398 9,130 8,764 Additions based on current year's tax positions 350 539 358 Additions for prior years' tax positions 400 294 100 Reductions for prior years' tax positions (38) (6,243) (79) Reductions due to lapse of the statute of limitations (25) (16) (2) Settlements with tax authorities (153) (277) (11) Foreign exchange effects/other 3 (29) — Balance at December 31 3,935 3,398 9,130 The gross unrecognized tax benefit balances are predominantly related to tax positions that would reduce the Corporation’s effective tax rate if the positions are favorably resolved. Unfavorable resolution of these tax positions generally would not increase the effective tax rate. The 2023, 2022, and 2021 changes in unrecognized tax benefits did not have a material effect on the Corporation’s net income. Resolution of these tax positions through negotiations with the relevant tax authorities or through litigation will take many years to complete. It is difficult to predict the timing of resolution for these tax positions since the timing is not entirely within the control of the Corporation. Unlike 2022, during which litigation resolved certain unrecognized tax benefit positions, there was no major resolution of unrecognized tax benefit positions in 2023. The Corporation has various U.S. federal income tax positions at issue with the Internal Revenue Service (IRS) for tax years beginning in 2010. Unfavorable resolution of these issues would not have a material adverse effect on the Corporation’s operations or financial condition. It is reasonably possible that the total amount of unrecognized tax benefits could increase by up to 20 percent or decrease by up to 30 percent in the next 12 months. The following table summarizes the tax years that remain subject to examination by major tax jurisdiction: Country of Operation Open Tax Years Australia 2010 — 2023 Belgium 2020 — 2023 Canada 2001 — 2023 Kazakhstan 2015 — 2023 Nigeria 2016 — 2023 Papua New Guinea 2008 — 2023 United Arab Emirates 2022 — 2023 United States 2010 — 2023 The Corporation classifies interest on income tax-related balances as interest expense or interest income and classifies tax-related penalties as operating expense. For 2023, 2022, and 2021 the Corporation's net interest expense on income tax reserves was $60 million, $16 million, and $0 million, respectively. The related interest payable balances were $134 million and $63 million at December 31, 2023 and 2022, respectively.

Divestment Activities

Divestment Activities	12 Months Ended
	Dec. 31, 2023
Discontinued Operations and Disposal Groups [Abstract]
Divestment Activities	Divestment Activities In 2023, the Corporation realized proceeds of approximately $4.1 billion and recognized net after-tax earnings of approximately $0.6 billion from its divestment activities. This included the sale of the Aera Energy joint venture, Esso Thailand Ltd., the Billings Refinery, certain unconventional assets in the United States, as well as other smaller divestments. In 2022, the Corporation realized proceeds of approximately $5.2 billion and recognized net after-tax earnings of approximately $0.4 billion from its divestment activities. This included the sale of certain unproved assets in Romania and unconventional assets in Canada and the United States, as well as other smaller divestments. In February 2022, the Corporation signed an agreement with Seplat Energy Offshore Limited for the sale of Mobil Producing Nigeria Unlimited. The agreement is subject to certain conditions precedent and government approvals. In early July 2022, a Nigerian court issued an order to halt transition activities and enter into arbitration with the Nigerian National Petroleum Company. The closing date and any loss on sale will depend on resolution of these matters. On February 14, 2024, the Corporation closed the sale of the Santa Ynez Unit and associated facilities in California. The Corporation expects no material impacts on its first quarter 2024 financial statements.

Mergers and Acquisitions

Mergers and Acquisitions	12 Months Ended
	Dec. 31, 2023
Business Combination and Asset Acquisition [Abstract]
Mergers and Acquisitions	Mergers and Acquisitions Denbury Inc. On November 2, 2023, the Corporation acquired Denbury, a developer of carbon capture, utilization, and storage solutions and enhanced oil recovery producing assets. The acquisition also included Gulf Coast and Rocky Mountain oil and natural gas operations which consisted of proved reserves totaling approximately 0.2 billion oil-equivalent barrels and approximately 45 thousand oil-equivalent barrels per day of production. Total consideration was $5.1 billion, which included the issuance of 46 million shares of ExxonMobil common stock from treasury having a fair value of $4.8 billion on the acquisition date, and cash payments of $0.3 billion related to repayment of Denbury's credit facility and settlement of fractional shares. The transaction was accounted for as a business combination in accordance with ASC 805, which requires that assets acquired and liabilities assumed be recognized at their fair values as of the acquisition date. The following table summarizes the fair values of the assets acquired and liabilities assumed: (billions of dollars) Current assets 0.4 Property, plant & equipment 6.4 Other assets 0.2 Total assets 7.0 Current liabilities 0.3 Long-term liabilities 1.6 Total liabilities 1.9 Net assets acquired 5.1 Inputs for the assumptions used in the income approach to value property, plant and equipment included estimates for pipeline tariff rates, pipeline throughput volumes, commodity prices, future oil and gas production profiles, operating expenses, and a risk-adjusted discount rate. The Denbury acquisition resulted in an immaterial amount of goodwill. Revenues and earnings arising from Denbury's operations are immaterial in 2023 for pro forma disclosure purposes. Pioneer Natural Resources Company On October 11, 2023, the Corporation announced a merger agreement with Pioneer Natural Resources Company (Pioneer), an independent oil and gas exploration and production company, in exchange for ExxonMobil common stock. Based on the October 5 closing price for ExxonMobil shares, the fixed exchange rate of 2.3234 per Pioneer share, and Pioneer's outstanding net debt, the implied enterprise value of the transaction was approximately $65 billion. We expect the number of shares issuable in connection with the transaction to be approximately 546 million. The transaction is expected to close in the second quarter of 2024, subject to regulatory approvals. Pioneer holds over 850 thousand net acres in the Midland Basin of West Texas, which consist of proved reserves totaling over 2.3 billion oil-equivalent barrels (as of December 31, 2022) and over 700 thousand oil-equivalent barrels per day of production for the three months ended September 30, 2023.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pay vs Performance Disclosure
Net income (loss) attributable to ExxonMobil	$ 36,010	$ 55,740	$ 23,040

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Dec. 31, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Summary Of Accounting Policies

Summary Of Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2023
Accounting Policies [Abstract]
Principles of Consolidation and Accounting for Investments	Principles of Consolidation and Accounting for Investments The Consolidated Financial Statements include the accounts of subsidiaries the Corporation controls and any variable interest entities where it is deemed the primary beneficiary. They also include the Corporation’s share of the undivided interest in certain upstream assets, liabilities, revenues, and expenses. Amounts representing the Corporation’s interest in entities that it does not control, but over which it exercises significant influence, are included in “Investments, advances and long-term receivables”. Under the equity method of accounting, the Corporation recognizes its share of the net income of these companies in “Income from equity affiliates”. Majority ownership is normally the indicator of control that is the basis on which subsidiaries are consolidated. However, certain factors may indicate that a majority-owned investment is not controlled and, therefore, should be accounted for using the equity method of accounting. These factors occur where the minority shareholders are granted, by law or by contract, substantive participating rights. These include the right to approve operating policies, expense budgets, financing and investment plans, and management compensation and succession plans. Investments accounted for by the equity method are assessed for possible impairment when events or changes in circumstances indicate that the carrying value of an investment may not be recoverable. Examples of key indicators include a history of operating losses, negative earnings and cash flow outlook, significant downward revisions to oil and gas reserves, and the financial condition and prospects for the investee’s business segment or geographic region. If the decline in value of the investment is other than temporary, the carrying value of the investment is written down to fair value. In the absence of market prices for the investment, discounted cash flows are used to assess fair value. The Corporation’s share of the cumulative foreign exchange translation adjustment for equity method investments is reported in “Accumulated other comprehensive income”. Investments in equity securities, other than consolidated subsidiaries and equity method investments, are measured at fair value with changes in fair value recognized in net income. The Corporation uses the modified approach for equity securities that do not have a readily determinable fair value. This modified approach measures investments at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions in a similar investment of the same issuer.
Revenue Recognition	Revenue Recognition The Corporation generally sells crude oil, natural gas, and petroleum and chemical products under short-term agreements at prevailing market prices. In some cases (e.g., natural gas), products may be sold under long-term agreements, with periodic price adjustments to reflect market conditions. Revenue is recognized at the amount the Corporation expects to receive when the customer has taken control, which is typically when title transfers and the customer has assumed the risks and rewards of ownership. The prices of certain sales are based on price indices that are sometimes not available until the next period. In such cases, estimated realizations are accrued when the sale is recognized, and are finalized when the price is available. Such adjustments to revenue from performance obligations satisfied in previous periods are not significant. Payment for revenue transactions is typically due within 30 days. Future volume delivery obligations that are unsatisfied at the end of the period are expected to be fulfilled through ordinary production or purchases. These performance obligations are based on market prices at the time of the transaction and are fully constrained due to market price volatility. Purchases and sales of inventory with the same counterparty that are entered into in contemplation of one another are combined and recorded as exchanges measured at the book value of the item sold. “Sales and other operating revenue” and “Notes and accounts receivable” include revenue and receivables both within the scope of ASC 606 "Revenue from Contracts with Customers” and those outside the scope of ASC 606. Long-term receivables are primarily from receivables outside the scope of ASC 606. Contract assets are mainly from marketing assistance programs and are not significant. Contract liabilities are mainly customer prepayments and accruals of expected volume discounts and are not significant.
Income and Other Taxes	Income and Other Taxes The Corporation excludes from the Consolidated Statement of Income certain sales and value-added taxes imposed on and concurrent with revenue-producing transactions with customers and collected on behalf of governmental authorities. Similar taxes, for which the Corporation is not considered to be an agent for the government, are reported on a gross basis (included in both “Sales and other operating revenue” and “Other taxes and duties”). The Corporation accounts for U.S. tax on global intangible low-taxed income as an income tax expense in the period in which it is incurred.
Derivative Instruments	Derivative Instruments The Corporation may use derivative instruments for trading purposes and to offset exposures associated with commodity prices, foreign currency exchange rates, and interest rates that arise from existing assets, liabilities, firm commitments, and forecasted transactions. All derivative instruments, except those designated as normal purchase and normal sale, are recorded at fair value. Derivative assets and liabilities with the same counterparty are netted if the right of offset exists and certain other criteria are met. Collateral payables or receivables are netted against derivative assets and derivative liabilities, respectively. Recognition and classification of the gain or loss that results from adjusting a derivative to fair value depends on the purpose for the derivative. All gains and losses from derivative instruments for which the Corporation does not apply hedge accounting are immediately recognized in earnings. The Corporation may designate derivatives as fair value or cash flow hedges. For fair value hedges, the gain or loss from derivative instruments and the offsetting gain or loss from the hedged item are recognized in earnings. For cash flow hedges, the gain or loss from the derivative instrument is initially reported as a component of other comprehensive income and subsequently reclassified into earnings in the period that the forecasted transaction affects earnings.
Fair Value	Fair Value Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. Hierarchy levels 1, 2, and 3 are terms for the priority of inputs to valuation techniques used to measure fair value. Hierarchy level 1 inputs are quoted prices in active markets for identical assets or liabilities. Hierarchy level 2 inputs are inputs other than quoted prices included within level 1 that are directly or indirectly observable for the asset or liability. Hierarchy level 3 inputs are inputs that are not observable in the market.
Inventories	Inventories
Property, Plant And Equipment	Property, Plant, and Equipment Cost Basis. The Corporation uses the “successful efforts” method to account for its exploration and production activities. Under this method, costs are accumulated on a field-by-field basis. Costs incurred to purchase, lease, or otherwise acquire a property (whether unproved or proved) are capitalized when incurred. Exploratory well costs are carried as an asset when the well has found a sufficient quantity of reserves to justify its completion as a producing well and where the Corporation is making sufficient progress assessing the reserves and the economic and operating viability of the project. Exploratory well costs not meeting these criteria are charged to expense. Other exploratory expenditures, including geophysical costs and annual lease rentals, are expensed as incurred. Development costs, including costs of productive wells and development dry holes, are capitalized. Interest costs incurred to finance expenditures during the construction phase of multiyear projects are capitalized as part of the historical cost of acquiring the constructed assets. The project construction phase commences with the development of the detailed engineering design and ends when the constructed assets are ready for their intended use. Capitalized interest costs are included in property, plant, and equipment and are depreciated over the service life of the related assets. Depreciation, Depletion, and Amortization. Depreciation, depletion, and amortization are primarily determined under either the unit-of-production method or the straight-line method, which is based on estimated asset service life, taking obsolescence into consideration. Acquisition costs of proved properties are amortized using a unit-of-production method, computed on the basis of total proved oil and natural gas reserve volumes. Capitalized exploratory drilling and development costs associated with productive depletable extractive properties are amortized using the unit-of-production rates based on the amount of proved developed reserves of oil and gas that are estimated to be recoverable from existing facilities using current operating methods. Under the unit-of-production method, oil and natural gas volumes are considered produced once they have been measured through meters at custody transfer or sales transaction points at the outlet valve on the lease or field storage tank. In the event that the unit-of-production method does not result in an equitable allocation of cost over the economic life of an upstream asset, an alternative method is used. The straight-line method is used in limited situations where the expected life of the asset does not reasonably correlate with that of the underlying reserves. For example, certain assets used in the production of oil and natural gas have a shorter life than the reserves, and as such, the Corporation uses straight-line depreciation to ensure the asset is fully depreciated by the end of its useful life. To the extent that proved reserves for a property are substantially de-booked and that property continues to produce such that the resulting depreciation charge does not result in an equitable allocation of cost over the expected life, assets will be depreciated using a unit-of-production method based on reserves determined at the most recent SEC price which results in a more meaningful quantity of proved reserves, appropriately adjusted for production and technical changes. Investments in refinery, chemical process, and lubes basestock manufacturing equipment are generally depreciated on a straight-line basis over a 25-year life. Service station buildings and fixed improvements are generally depreciated over a 20-year life. Maintenance and repairs, including planned major maintenance, are expensed as incurred. Major renewals and improvements are capitalized, and the assets replaced are retired. Impairment Assessment. The Corporation tests assets or groups of assets for recoverability on an ongoing basis whenever events or changes in circumstances indicate that the carrying amounts may not be recoverable. Among the events or changes in circumstances which could indicate that the carrying value of an asset or asset group may not be recoverable are the following: • a significant decrease in the market price of a long-lived asset; • a significant adverse change in the extent or manner in which an asset is being used or in its physical condition, including a significant decrease in current and projected reserve volumes; • a significant adverse change in legal factors or in the business climate that could affect the value, including an adverse action or assessment by a regulator; • an accumulation of project costs significantly in excess of the amount originally expected; • a current-period operating loss combined with a history and forecast of operating or cash flow losses; and • a current expectation that, more likely than not, a long-lived asset will be sold or otherwise disposed of significantly before the end of its previously estimated useful life. The Corporation has a robust process to monitor for indicators of potential impairment across its asset groups throughout the year. This process is aligned with the requirements of ASC 360 and ASC 932, and relies, in part, on the Corporation’s planning and budgeting cycle. Asset valuation analysis, profitability reviews, and other periodic control processes assist the Corporation in assessing whether events or changes in circumstances indicate the carrying amounts of any of its assets may not be recoverable. Because the lifespans of the vast majority of the Corporation’s major assets are measured in decades, the future cash flows of these assets are predominantly based on long-term oil and natural gas commodity prices and industry margins, development costs, and production costs. Significant reductions in the Corporation’s view of oil or natural gas commodity prices or margin ranges, especially the longer-term prices and margins, and changes in the development plans, including decisions to defer, reduce, or eliminate planned capital spending, can be an indicator of potential impairment. Other events or changes in circumstances can be indicators of potential impairment as well. In general, the Corporation does not view temporarily low prices or margins as an indication of impairment. Management believes that prices over the long term must be sufficient to generate investments in energy supply to meet global demand. Although prices will occasionally drop significantly, industry prices over the long term will continue to be driven by market supply and demand fundamentals. On the supply side, industry production from mature fields is declining. This is being offset by investments to generate production from new discoveries, field developments, and technology and efficiency advancements. OPEC investment activities and production policies also have an impact on world oil supplies. The demand side is largely a function of general economic activities, alternative energy sources, and levels of prosperity. During the lifespan of its major assets, the Corporation expects that oil and gas prices and industry margins will experience significant volatility. Consequently, these assets will experience periods of higher earnings and periods of lower earnings, or even losses. In assessing whether events or changes in circumstances indicate the carrying value of an asset may not be recoverable, the Corporation considers recent periods of operating losses in the context of its longer-term view of prices and margins. In the Upstream, the standardized measure of discounted cash flows included in the Supplemental Information on Oil and Gas Exploration and Production Activities is required to use prices based on the average of first-of-month prices in the year. These prices represent discrete points in time and could be higher or lower than the Corporation’s price assumptions which are used for impairment assessments. The Corporation believes the standardized measure does not provide a reliable estimate of the expected future cash flows to be obtained from the development and production of its oil and gas properties or of the value of its oil and gas reserves, and therefore, does not consider it relevant in determining whether events or changes in circumstances indicate the need for an impairment assessment. Global Outlook and Cash Flow Assessment. The annual planning and budgeting process, known as the Corporate Plan, is the mechanism by which resources (capital, operating expenses, and people) are allocated across the Corporation. The foundation for the assumptions supporting the Corporate Plan is the Global Outlook (Outlook), which contains the Corporation’s demand and supply projections based on its assessment of current trends in technology, government policies, consumer preferences, geopolitics, economic development, and other factors. Reflective of the existing global policy environment, the Outlook does not attempt to project the degree of necessary future policy and technology advancement and deployment for the world, or the Corporation, to meet net zero by 2050. As future policies and technology advancements emerge, they will be incorporated into the Outlook, and the Corporation’s business plans will be updated accordingly. If events or changes in circumstances indicate that the carrying value of an asset may not be recoverable, the Corporation estimates the future undiscounted cash flows of the affected properties to judge the recoverability of carrying amounts. In performing this assessment, assets are grouped at the lowest level for which there are identifiable cash flows that are largely independent of the cash flows of other groups of assets. Cash flows used in recoverability assessments are based on the assumptions developed in the Corporate Plan, which is reviewed and approved by the Board of Directors, and are consistent with the criteria management uses to evaluate investment opportunities. These evaluations make use of the Corporation’s assumptions of future capital allocations, crude oil and natural gas commodity prices including price differentials, refining and chemical margins, volumes, development and operating costs including greenhouse gas emission prices, and foreign currency exchange rates. Notably, when assessing future cash flows, the Corporation includes the estimated costs in support of reaching its 2030 greenhouse gas emission-reduction plans, including its goal of net-zero Scope 1 and 2 greenhouse gas emissions from unconventional operated assets in the Permian Basin. Volumes are based on projected field and facility production profiles, throughput, or sales. Management’s estimate of upstream production volumes used for projected cash flows makes use of proved reserve quantities and may include risk-adjusted unproved reserve quantities. Cash flow estimates for impairment testing exclude the effects of derivative instruments. As part of the Corporate Plan, the Company considers estimated greenhouse gas emission costs, even for jurisdictions without a current greenhouse gas pricing policy. Fair Value of Impaired Assets. An asset group is impaired if its estimated undiscounted cash flows are less than the asset group's carrying value. Impairments are measured by the excess of the carrying value over fair value. The assessment of fair value is based upon the views of a likely market participant. The principal parameters used to establish fair value include estimates of acreage values and flowing production metrics from comparable market transactions, market-based estimates of historical cash flow multiples, and discounted cash flows. Inputs and assumptions used in discounted cash flow models include estimates of future production volumes, throughput and product sales volumes, commodity prices (which are consistent with the average of third-party industry experts and government agencies), refining and chemical margins, drilling and development costs, operating costs, and discount rates which are reflective of the characteristics of the asset group. Other Impairments Related to Property, Plant and Equipment. Unproved properties are assessed periodically to determine whether they have been impaired. Significant unproved properties are assessed for impairment individually, and valuation allowances against the capitalized costs are recorded based on the Corporation's future development plans, the estimated economic chance of success, and the length of time that the Corporation expects to hold the properties. Properties that are not individually significant are aggregated by groups and amortized based on development risk and average holding period.
Environmental Liabilities	Environmental Liabilities Liabilities for environmental costs are recorded when it is probable that obligations have been incurred and the amounts can be reasonably estimated. These liabilities are not reduced by possible recoveries from third parties, and projected cash expenditures are not discounted.
Foreign Currency Translation	Foreign Currency Translation The Corporation selects the functional reporting currency for its international subsidiaries based on the currency of the primary economic environment in which each subsidiary operates. Operations in the Product Solutions businesses use the local currency. However, the U.S. dollar is used in countries with a history of high inflation (primarily in Latin America) and in Singapore, which predominantly sells into the U.S. dollar export market. Upstream operations which are relatively self-contained and integrated within a particular country, such as in Canada and Europe, use the local currency. Some Upstream operations, primarily in Asia and Africa, use the U.S. dollar because they predominantly sell crude and natural gas production into U.S. dollar-denominated markets. For all operations, gains or losses from remeasuring foreign currency transactions into the functional currency are included in income.
Asset Retirement Obligations	The Corporation incurs retirement obligations for certain assets. The fair values of these obligations are recorded as liabilities on a discounted basis, which is typically at the time the assets are installed. In the estimation of fair value, the Corporation uses assumptions and judgments regarding such factors as the existence of a legal obligation for an asset retirement obligation, technical assessments of the assets, estimated amounts and timing of settlements, discount rates, and inflation rates. Asset retirement obligations incurred in the current period were Level 3 fair value measurements. The costs associated with these liabilities are capitalized as part of the related assets and depreciated as the reserves are produced. Over time, the liabilities are accreted for the change in their present value.
Oil and Gas Properties	The Corporation continues capitalization of exploratory well costs when the well has found a sufficient quantity of reserves to justify its completion as a producing well and the Corporation is making sufficient progress assessing the reserves and the economic and operating viability of the project.
Leases	Right of use assets and lease liabilities are established on the balance sheet for leases with an expected term greater than one year by discounting the amounts fixed in the lease agreement for the duration of the lease which is reasonably certain, considering the probability of exercising any early termination and extension options. The portion of the fixed payment related to service costs for drilling equipment, tankers, and finance leases is excluded from the calculation of right of use assets and lease liabilities.In general, leases are capitalized using the incremental borrowing rate of the leasing affiliate.
Net Investment Hedge Risk Management	The Corporation may use non-derivative financial instruments, such as its foreign currency-denominated debt, as hedges of its net investments in certain foreign subsidiaries. Under this method, the change in the carrying value of the financial instruments due to foreign exchange fluctuations is reported in accumulated other comprehensive income.
Stock-Based Payments	Compensation expense for these awards is based on the price of the stock at the date of grant and is recognized in income over the requisite service period. Shares for these awards are issued to employees from treasury stock. The units that are settled in cash are recorded as liabilities, and their changes in fair value are recognized over the vesting period.
Commitments and Contingencies	The Corporation accrues an undiscounted liability for those contingencies where the incurrence of a loss is probable and the amount can be reasonably estimated. If a range of amounts can be reasonably estimated and no amount within the range is a better estimate than any other amount, then the minimum of the range is accrued. The Corporation does not record liabilities when the likelihood that the liability has been incurred is probable but the amount cannot be reasonably estimated or when the liability is believed to be only reasonably possible or remote. For contingencies where an unfavorable outcome is reasonably possible and which are significant, the Corporation discloses the nature of the contingency and, where feasible, an estimate of the possible loss. For purposes of our contingency disclosures, “significant” includes material matters, as well as other matters, which management believes should be disclosed.
Income Tax Uncertainties	The benefits of uncertain tax positions that the Corporation has taken or expects to take in its income tax returns are recognized in the financial statements if management concludes that it is more likely than not that the position will be sustained with the tax authorities. For a position that is likely to be sustained, the benefit recognized in the financial statements is measured at the largest amount that is greater than 50 percent likely of being realized. Unrecognized tax benefits reflect the difference between positions taken or expected to be taken on income tax returns and the amounts recognized in the financial statements.

Miscellaneous Financial Infor_2

Miscellaneous Financial Information (Tables)	12 Months Ended
	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Crude Oil, Products And Merchandise	Crude oil, products, and merchandise as of year-end 2023 and 2022 consist of the following: (millions of dollars) Dec 31, 2023 Dec 31, 2022 Crude oil 6,944 6,909 Petroleum products 6,248 6,291 Chemical products (1) 3,930 3,806 Gas/other 3,406 3,428 Total 20,528 20,434 (1) Chemical products includes basic chemicals (olefins and aromatics), polymers (such as polyolefins, adhesions, specialty elastomers, & butyl), intermediates (e.g. hydrocarbon fluids, plasticizers) and synthetics.

Other Comprehensive Income In_2

Other Comprehensive Income Information (Tables)	12 Months Ended
	Dec. 31, 2023
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Schedule Of Accumulated Other Comprehensive Income Information	ExxonMobil Share of Accumulated Other Comprehensive Income (millions of dollars) Cumulative Foreign Exchange Translation Adjustment Postretirement Benefits Reserves Adjustment Total Balance as of December 31, 2020 (10,614) (6,091) (16,705) Current period change excluding amounts reclassified from accumulated other comprehensive income (883) 2,938 2,055 Amounts reclassified from accumulated other comprehensive income (2) 888 886 Total change in accumulated other comprehensive income (885) 3,826 2,941 Balance as of December 31, 2021 (11,499) (2,265) (13,764) Current period change excluding amounts reclassified from accumulated other comprehensive income (1) (3,092) 3,205 113 Amounts reclassified from accumulated other comprehensive income — 381 381 Total change in accumulated other comprehensive income (3,092) 3,586 494 Balance as of December 31, 2022 (14,591) 1,321 (13,270) Current period change excluding amounts reclassified from accumulated other comprehensive income (1) 1,108 (305) 803 Amounts reclassified from accumulated other comprehensive income 427 51 478 Total change in accumulated other comprehensive income 1,535 (254) 1,281 Balance as of December 31, 2023 (13,056) 1,067 (11,989) (1) Cumulative Foreign Exchange Translation Adjustment includes net investment hedge gain/(loss) net of taxes of $(135) million and $230 million in 2023 and 2022, respectively.
Reclassification Out Of Accumulated Other Comprehensive Income	Amounts Reclassified Out of Accumulated Other Comprehensive Income - Before-tax Income/(Expense) (millions of dollars) 2023 2022 2021 Foreign exchange translation gain/(loss) included in net income (Statement of Income line: Other income) (609) — 2 Amortization and settlement of postretirement benefits reserves adjustment included in net periodic benefit costs (Statement of Income line: Non-service pension and postretirement benefit expense) (81) (519) (1,229)
Schedule Of Income Tax (Expense)/Credit For Components Of Other Comprehensive Income	Income Tax (Expense)/Credit For Components of Other Comprehensive Income (millions of dollars) 2023 2022 2021 Foreign exchange translation adjustment 341 54 (114) Postretirement benefits reserves adjustment (excluding amortization) 200 (1,120) (983) Amortization and settlement of postretirement benefits reserves adjustment included in net periodic benefit costs (20) (116) (304) Total 521 (1,182) (1,401)

Cash Flow Information (Tables)

Cash Flow Information (Tables)	12 Months Ended
	Dec. 31, 2023
Supplemental Cash Flow Information [Abstract]
Cash Payments For Interest And Income Taxes	(millions of dollars) 2023 2022 2021 Income taxes paid 15,473 15,364 5,341 Cash interest paid Included in cash flows from operating activities 584 666 819 Capitalized, included in cash flows from investing activities 1,152 838 655 Total cash interest paid 1,736 1,504 1,474

Additional Working Capital In_2

Additional Working Capital Information (Tables)	12 Months Ended
	Dec. 31, 2023
Additional Working Capital Information [Abstract]
Schedule Of Notes, Accounts Receivable And Payable, Loans Payable, And Accrued Liabilities	(millions of dollars) Dec 31, 2023 Dec 31, 2022 Notes and accounts receivable Trade, less reserves of $170 million and $168 million 30,296 32,844 Other, less reserves of $101 million and $402 million 7,719 8,905 Total 38,015 41,749 Notes and loans payable Bank loans 6 379 Commercial paper 75 74 Long-term debt due within one year 4,009 181 Total 4,090 634 Accounts payable and accrued liabilities Trade payables 31,249 33,169 Payables to equity companies 11,885 14,585 Accrued taxes other than income taxes 3,817 3,969 Other 11,086 11,474 Total 58,037 63,197

Equity Company Information (Tab

Equity Company Information (Tables)	12 Months Ended
	Dec. 31, 2023
Equity Method Investment, Financial Statement, Reported Amounts [Abstract]
Schedule Of Equity Company Financial Summary	Equity Company Financial Summary (millions of dollars) 2023 2022 2021 Total ExxonMobil Total ExxonMobil Share Total ExxonMobil Total revenues 132,783 40,682 183,812 57,528 116,972 34,995 Income before income taxes 35,999 10,078 61,550 19,279 35,142 9,278 Income taxes 11,404 3,085 23,149 7,603 11,010 2,763 Income from equity affiliates 24,595 6,993 38,401 11,676 24,132 6,515 Current assets 53,081 18,713 77,457 24,994 45,267 15,542 Long-term assets 150,198 40,986 153,186 42,921 150,699 41,614 Total assets 203,279 59,699 230,643 67,915 195,966 57,156 Current liabilities 30,721 9,652 53,640 15,555 28,862 8,297 Long-term liabilities 57,237 17,059 62,009 18,929 63,138 19,084 Net assets 115,321 32,988 114,994 33,431 103,966 29,775
Schedule Of The Corporation's Percentage Ownership Interest	A list of significant equity companies as of December 31, 2023, together with the Corporation’s percentage ownership interest, is detailed below: Percentage Ownership Interest Upstream Barzan Gas Company Limited 7 BEB Erdgas und Erdoel GmbH & Co. KG 50 Caspian Pipeline Consortium 8 Coral FLNG S.A. 25 Cross Timbers Energy LLC 50 GasTerra B.V. 25 Golden Pass LNG Terminal LLC 30 Golden Pass Pipeline LLC 30 Marine Well Containment Company LLC 10 Mozambique Rovuma Venture S.p.A. 36 Nederlandse Aardolie Maatschappij B.V. 50 Papua New Guinea Liquefied Natural Gas Global Company LDC 33 Permian Highway Pipeline LLC 17 QatarEnergy LNG N (2) 24 QatarEnergy LNG NFE (3) 25 QatarEnergy LNG S (1) 25 QatarEnergy LNG S (2) 31 QatarEnergy LNG S (3) 30 South Hook LNG Terminal Company Limited 24 Tengizchevroil LLP 25 Terminale GNL Adriatico S.r.l. 71 Energy Products, Chemical Products, and/or Specialty Products Al-Jubail Petrochemical Company 50 Alberta Products Pipe Line Ltd. 45 Fujian Refining & Petrochemical Co. Ltd. 25 Gulf Coast Growth Ventures LLC 50 Infineum USA L.P. 50 Permian Express Partners LLC 12 Saudi Aramco Mobil Refinery Company Ltd. 50 Saudi Yanbu Petrochemical Co. 50

Investments, Advances And Lon_2

Investments, Advances And Long-Term Receivables (Tables)	12 Months Ended
	Dec. 31, 2023
Long-Term Investments and Receivables, Net [Abstract]
Schedule Of Investments, Advances And Long-Term Receivables	(millions of dollars) Dec 31, 2023 Dec 31, 2022 Equity method company investments and advances Investments 34,080 34,522 Advances, net of allowances of $33 million and $28 million 7,527 8,049 Total equity method company investments and advances 41,607 42,571 Equity securities carried at fair value and other investments at adjusted cost basis 177 278 Long-term receivables and miscellaneous, net of reserves of $1,966 million and $1,623 million 5,846 6,944 Total 47,630 49,793

Property, Plant And Equipment_2

Property, Plant And Equipment And Asset Retirement Obligations (Tables)	12 Months Ended
	Dec. 31, 2023
Property, Plant And Equipment And Asset Retirement Obligations [Abstract]
Property, Plant And Equipment	Property, Plant and Equipment (millions of dollars) December 31, 2023 December 31, 2022 Cost Net Cost Net Upstream 359,031 148,245 350,748 144,146 Energy Products 57,400 27,284 58,393 26,765 Chemical Products 38,801 20,329 36,322 19,064 Specialty Products 9,385 4,378 8,895 4,303 Other 22,768 14,704 18,335 10,414 Total 487,385 214,940 472,693 204,692
Schedule of Asset Retirement Obligations	The following table summarizes the activity in the liability for asset retirement obligations: (millions of dollars) 2023 2022 2021 Balance at January 1 10,491 10,630 11,247 Accretion expense and other provisions 734 744 548 Reduction due to property sales (288) (328) (1,002) Payments made (693) (518) (444) Liabilities incurred 831 119 42 Foreign currency translation 124 (330) (147) Revisions 1,790 174 386 Balance at December 31 12,989 10,491 10,630

Accounting For Suspended Expl_2

Accounting For Suspended Exploratory Well Costs (Tables)	12 Months Ended
	Dec. 31, 2023
Capitalized Exploratory Well Costs [Abstract]
Change In Capitalized Suspended Exploratory Well Costs	Change in capitalized suspended exploratory well costs (millions of dollars) 2023 2022 2021 Balance beginning at January 1 3,512 4,120 4,382 Additions pending the determination of proved reserves 200 378 420 Charged to expense (95) (259) (325) Reclassifications to wells, facilities and equipment based on the determination of proved reserves (142) (142) (328) Divestments/Other 84 (585) (29) Ending balance at December 31 3,559 3,512 4,120 Ending balance attributed to equity companies included above 306 306 306
Period End Capitalized Suspended Exploratory Well Costs	Period-end capitalized suspended exploratory well costs (millions of dollars) 2023 2022 2021 Capitalized for a period of one year or less 200 378 420 Capitalized for a period of between one and five years 1,030 969 1,642 Capitalized for a period of between five and ten years 1,411 1,410 1,657 Capitalized for a period of greater than ten years 918 755 401 Capitalized for a period greater than one year - subtotal 3,359 3,134 3,700 Total 3,559 3,512 4,120
Number Of Projects With Capitalized Suspended Exploratory Well Costs	2023 2022 2021 Number of projects that only have exploratory well costs capitalized for a period of one year or less — 10 4 Number of projects that have exploratory well costs capitalized for a period greater than one year 31 26 30 Total 31 36 34
Additional Detail For Projects With Completed Exploratory Activity Progressing Toward Development	The table below provides additional detail for those 15 projects, which total $2,389 million. Country/Project December 31, 2023 Years Wells Drilled / Acquired Comment (millions of dollars) Angola Block 32 Central NE Hub 66 2007 - 2021 Evaluating development plan to tie into existing infrastructure. Argentina La Invernada 72 2014 Evaluating development plan to tie into planned infrastructure. Australia Gorgon Area Ullage 308 1994 - 2015 Evaluating development plans to tie into existing LNG facilities. Canada Hibernia North 25 2019 Awaiting capacity in existing/planned infrastructure. Guyana Whiptail 178 2019 - 2022 Continuing discussions with the government regarding development plan. Kazakhstan Kairan 53 2004 - 2007 Evaluating commercialization and field development alternatives, while continuing discussions with the government regarding the development plan. Mozambique Rovuma LNG Phase 1 150 2017 Progressing development plan to tie into planned LNG facilities. Rovuma LNG Future Non-Straddling Train 120 2017 Evaluating/progressing development plan to tie into planned LNG facilities. Rovuma LNG Unitized Trains 35 2017 Evaluating/progressing development plan to tie into planned LNG facilities. Nigeria Bonga North 34 2004 - 2009 Progressing development plan to tie into existing/planned infrastructure. Papua New Guinea Papua LNG 246 2017 Evaluating/progressing development plans. Muruk 165 2017 - 2019 Evaluating/progressing development plans. P'nyang 116 2012 - 2018 Evaluating/progressing development plans. Tanzania Block 2 525 2012 - 2015 Evaluating development alternatives, while continuing discussions with the government regarding development plan. Vietnam Blue Whale 296 2011 - 2015 Evaluating/progressing development plans. Total 2023 (15 projects) 2,389

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2023
Lessee Disclosure [Abstract]
Lease Cost	Lease Cost (millions of dollars) Operating Leases Finance Leases 2023 2022 2021 2023 2022 2021 Operating lease cost 1,976 1,776 1,542 Short-term and other (net of sublease rental income) 1,563 1,389 1,351 Amortization of right of use assets 107 243 133 Interest on lease liabilities 140 210 158 Total (1) 3,539 3,165 2,893 247 453 291 (1) Includes $999 million, $908 million, and $681 million for drilling rigs and related equipment operating leases in 2023, 2022, and 2021, respectively.
Right Of Use Assets And Lease Liabilities	Balance Sheet (millions of dollars) Operating Leases Finance Leases December 31, 2023 December 31, 2022 December 31, 2023 December 31, 2022 Right of use assets Included in Other assets, including intangibles - net 6,849 6,451 Included in Property, plant and equipment - net 2,712 2,090 Total right of use assets 6,849 6,451 2,712 2,090 Lease liability due within one year Included in Accounts payable and accrued liabilities 1,617 1,527 5 5 Included in Notes and loans payable 95 69 Long-term lease liability Included in Other long-term obligations 4,393 4,067 Included in Long-term debt 1,821 1,389 Included in Long-term obligations to equity companies 121 126 Total lease liability (2) 6,010 5,594 2,042 1,589 Weighted-average remaining lease term (years) 8 9 26 22 Weighted-average discount rate (percent) 3.9 % 2.4 % 7.2 % 8.0 % (2) Includes $2,032 million and $1,646 million for drilling rigs and related equipment operating leases in 2023 and 2022, respectively.
Maturity Analysis of Operating Leases	Maturity Analysis of Lease Liabilities (millions of dollars) Operating Leases Finance Leases December 31, 2023 2024 1,807 243 2025 1,464 237 2026 1,046 234 2027 577 224 2028 307 241 2029 and beyond 1,781 2,256 Total lease payments 6,982 3,435 Discount to present value (972) (1,393) Total lease liability 6,010 2,042
Maturity Analysis of Finance Leases	Maturity Analysis of Lease Liabilities (millions of dollars) Operating Leases Finance Leases December 31, 2023 2024 1,807 243 2025 1,464 237 2026 1,046 234 2027 577 224 2028 307 241 2029 and beyond 1,781 2,256 Total lease payments 6,982 3,435 Discount to present value (972) (1,393) Total lease liability 6,010 2,042
Operating And Finance Leases Other Information	Other Information (millions of dollars) Operating Leases Finance Leases 2023 2022 2021 2023 2022 2021 Cash paid for amounts included in the measurement of lease liabilities Cash flows from operating activities 1,135 1,119 1,135 20 20 20 Cash flows from investing activities 758 500 291 Cash flows from financing activities 86 149 110 Noncash right of use assets recorded for lease liabilities In exchange for lease liabilities during the period 2,161 1,997 1,405 529 73 200

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2023
Earnings Per Share [Abstract]
Earnings Per Share Computation	Earnings per common share 2023 2022 2021 Net income (loss) attributable to ExxonMobil (millions of dollars) 36,010 55,740 23,040 Weighted-average number of common shares outstanding (millions of shares) (1) 4,052 4,205 4,275 Earnings (loss) per common share (dollars) (2) 8.89 13.26 5.39 Dividends paid per common share (dollars) 3.68 3.55 3.49 (1) Includes restricted shares not vested. (2) The earnings (loss) per common share and earnings (loss) per common share - assuming dilution are the same in each period shown.

Financial Instruments and Der_2

Financial Instruments and Derivatives (Tables)	12 Months Ended
	Dec. 31, 2023
Financial Instruments And Derivatives [Abstract]
Financial Instruments	The estimated fair value of financial instruments and derivatives at December 31, 2023, and December 31, 2022, and the related hierarchy level for the fair value measurement was as follows: December 31, 2023 Fair Value (millions of dollars) Level 1 Level 2 Level 3 Total Gross Assets & Liabilities Effect of Counterparty Netting Effect of Collateral Netting Difference in Carrying Value and Fair Value Net Carrying Value Assets Derivative assets (1) 4,544 1,731 — 6,275 (5,177) (528) — 570 Advances to/receivables from equity companies (2)(6) — 2,517 4,491 7,008 — — 519 7,527 Other long-term financial assets (3) 1,389 — 944 2,333 — — 202 2,535 Liabilities Derivative liabilities (4) 4,056 1,608 — 5,664 (5,177) (40) — 447 Long-term debt (5) 30,556 2,004 — 32,560 — — 3,102 35,662 Long-term obligations to equity companies (6) — — 1,896 1,896 — — (92) 1,804 Other long-term financial liabilities (7) — — 697 697 — — 45 742 December 31, 2022 Fair Value (millions of dollars) Level 1 Level 2 Level 3 Total Gross Assets & Liabilities Effect of Counterparty Netting Effect of Collateral Netting Difference in Carrying Value and Fair Value Net Carrying Value Assets Derivative assets (1) 4,309 3,455 — 7,764 (5,778) (969) — 1,017 Advances to/receivables from equity companies (2)(6) — 2,406 4,958 7,364 — — 685 8,049 Other long-term financial assets (3) 1,208 — 1,413 2,621 — — 346 2,967 Liabilities Derivative liabilities (4) 3,417 3,264 — 6,681 (5,778) (79) — 824 Long-term debt (5) 33,112 1,880 6 34,998 — — 4,173 39,171 Long-term obligations to equity companies (6) — — 2,467 2,467 — — (129) 2,338 Other long-term financial liabilities (7) — — 679 679 — — 38 717 (1) Included in the Balance Sheet lines: Notes and accounts receivable - net and Other assets, including intangibles - net. (2) Included in the Balance Sheet line: Investments, advances and long-term receivables. (3) Included in the Balance Sheet lines: Investments, advances and long-term receivables and Other assets, including intangibles - net. (4) Included in the Balance Sheet lines: Accounts payable and accrued liabilities and Other long-term obligations. (5) Excluding finance lease obligations. (6) Advances to/receivables from equity companies and long-term obligations to equity companies are mainly designated as hierarchy level 3 inputs. The fair value is calculated by discounting the remaining obligations by a rate consistent with the credit quality and industry of the company. (7) Included in the Balance Sheet line: Other long-term obligations. Includes contingent consideration related to a prior year acquisition where fair value is based on expected drilling activities and discount rates.
Schedule of Notional Amounts of Outstanding Derivative Positions	The net notional long/(short) position of derivative instruments at December 31, 2023, and December 31, 2022, was as follows: (millions) December 31, December 31, 2023 2022 Crude oil (barrels) (7) 4 Petroleum products (barrels) (43) (52) Natural gas (MMBTUs) (560) (64)
Derivative Instruments - Before-Tax Realized and Unrealized Gains / (Losses)	Realized and unrealized gains/(losses) on derivative instruments that were recognized in the Consolidated Statement of Income are included in the following lines on a before-tax basis: (millions of dollars) 2023 2022 2021 Sales and other operating revenue 986 (1,763) (3,818) Crude oil and product purchases 79 314 48 Total 1,065 (1,449) (3,770)

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2023
Long-Term Debt, Unclassified [Abstract]
Summarized Long-Term Debt	Summarized long-term debt at year-end 2023 and 2022 are shown in the table below: (millions of dollars, except where stated otherwise) Average Rate (1) Dec 31, 2023 Dec 31, 2022 Exxon Mobil Corporation (2) 3.176% notes due 2024 — 1,000 2.019% notes due 2024 — 1,000 2.709% notes due 2025 1,750 1,750 2.992% notes due 2025 2,767 2,781 3.043% notes due 2026 2,500 2,500 2.275% notes due 2026 1,000 1,000 3.294% notes due 2027 1,000 1,000 2.440% notes due 2029 1,250 1,250 3.482% notes due 2030 2,000 2,000 2.610% notes due 2030 2,000 2,000 2.995% notes due 2039 750 750 4.227% notes due 2040 2,080 2,084 3.567% notes due 2045 1,000 1,000 4.114% notes due 2046 2,500 2,500 3.095% notes due 2049 1,500 1,500 4.327% notes due 2050 2,750 2,750 3.452% notes due 2051 2,750 2,750 Exxon Mobil Corporation - Euro-denominated 0.142% notes due 2024 — 1,600 0.524% notes due 2028 1,105 1,066 0.835% notes due 2032 1,105 1,066 1.408% notes due 2039 1,105 1,066 XTO Energy Inc. (3) 6.100% senior notes due 2036 189 189 6.750% senior notes due 2037 286 289 6.375% senior notes due 2038 223 224 Industrial revenue bonds due 2022-2051 3.080% 2,123 2,245 Finance leases & other obligations 5.985% 3,838 3,299 Debt issuance costs (88) (100) Total long-term debt 37,483 40,559 (1) Average effective or imputed interest rates at December 31, 2023. (2) Includes premiums of $97 million in 2023 and $115 million in 2022. (3) Includes premiums of $71 million in 2023 and $76 million in 2022.

Incentive Program (Tables)

Incentive Program (Tables)	12 Months Ended
	Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]
Summary Of Restricted Stock And Units Outstanding	The following tables summarize information about restricted stock and restricted stock units for the year ended December 31, 2023. Restricted stock and units outstanding 2023 Shares Weighted-Average (thousands) (dollars) Issued and outstanding at January 1 37,573 67.47 Awards issued in 2023 9,247 110.84 Vested (8,572) 67.75 Forfeited (436) 73.62 Issued and outstanding at December 31 37,812 77.94
Grant Value Of Restricted Stock Units	Value of restricted stock units 2023 2022 2021 Grant price (dollars) 103.16 110.46 62.76 Value at date of grant: (millions of dollars) Units settled in stock 900 931 461 Units settled in cash 101 106 49 Total value 1,001 1,037 510

Litigation And Other Continge_2

Litigation And Other Contingencies (Tables)	12 Months Ended
	Dec. 31, 2023
Loss Contingency [Abstract]
Schedule Of Guarantees	December 31, 2023 (millions of dollars) Equity Company Obligations (1) Other Third-Party Obligations Total Guarantees Debt-related 1,151 149 1,300 Other 711 5,796 6,507 Total 1,862 5,945 7,807 (1) ExxonMobil share.

Pension And Other Postretirem_2

Pension And Other Postretirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2023
Retirement Benefits [Abstract]
Change In Benefit Obligation Of Pension And Other Postretirement Benefits	Pension Benefits Other Postretirement Benefits (millions of dollars, except where stated otherwise) U.S. Non-U.S. 2023 2022 2023 2022 2023 2022 Weighted-average assumptions used to determine benefit obligations at December 31 Discount rate (percent) 5.30 5.60 4.30 4.90 5.30 5.60 Long-term rate of compensation increase (percent) 4.50 4.50 4.50 5.20 4.50 4.50 Change in benefit obligation Benefit obligation at January 1 12,350 18,511 19,342 29,492 5,211 7,265 Service cost 466 712 323 570 78 138 Interest cost 664 518 922 614 276 216 Actuarial loss/(gain) (1) 550 (4,432) 1,393 (7,742) 176 (1,990) Benefits paid (2)(3) (870) (2,959) (1,214) (1,415) (545) (492) Foreign exchange rate changes — — 515 (2,258) 11 (47) Amendments, divestments and other (17) — 46 81 (193) 121 Benefit obligation at December 31 13,143 12,350 21,327 19,342 5,014 5,211 Accumulated benefit obligation at December 31 11,033 10,367 19,769 18,047 — — (1) Actuarial loss/(gain) primarily reflects lower discount rates. (2) Benefit payments for funded and unfunded plans. (3) For 2023 and 2022, other postretirement benefits paid are net of $19 million and $24 million of Medicare subsidy receipts, respectively.
Change In Plan Assets Of Pension And Other Postretirement Benefits	Pension Benefits Other Postretirement Benefits (millions of dollars) U.S. Non-U.S. 2023 2022 2023 2022 2023 2022 Change in plan assets Fair value at January 1 10,989 13,266 16,757 24,880 348 440 Actual return on plan assets 1,121 (3,265) 1,484 (5,287) 36 (66) Foreign exchange rate changes — — 492 (2,012) — — Company contribution — 3,596 615 655 38 27 Benefits paid (1) (743) (2,608) (878) (1,070) (51) (53) Other — — (39) (409) — — Fair value at December 31 11,367 10,989 18,431 16,757 371 348 (1) Benefit payments for funded plans.
Summary Of Assets In Excess Of/(Less Than) Benefit Obligation	Pension Benefits (millions of dollars) U.S. Non-U.S. 2023 2022 2023 2022 Assets in excess of/(less than) benefit obligation Balance at December 31 Funded plans (271) (23) 1,028 1,019 Unfunded plans (1,505) (1,338) (3,924) (3,604) Total (1,776) (1,361) (2,896) (2,585)
Amounts Recorded In Balance Sheet And Other Comprehensive Income	Pension Benefits Other Postretirement Benefits (millions of dollars) U.S. Non-U.S. 2023 2022 2023 2022 2023 2022 Assets in excess of/(less than) benefit obligation Balance at December 31 (1) (1,776) (1,361) (2,896) (2,585) (4,643) (4,863) Amounts recorded in the consolidated balance sheet consist of: Other assets — — 1,895 1,962 — — Current liabilities (201) (168) (225) (254) (288) (304) Postretirement benefits reserves (1,575) (1,193) (4,566) (4,293) (4,355) (4,559) Total recorded (1,776) (1,361) (2,896) (2,585) (4,643) (4,863) Amounts recorded in accumulated other comprehensive income consist of: Net actuarial loss/(gain) 744 897 1,364 846 (1,453) (1,726) Prior service cost (283) (295) 401 278 (459) (190) Total recorded in accumulated other comprehensive income 461 602 1,765 1,124 (1,912) (1,916) (1) Fair value of assets less benefit obligation shown on the preceding page.
Schedule Of Assumptions, Components Of Benefit Cost And Amounts Recorded In Accumulated Other Comprehensive Income For Pension And Other Postretirement Benefits	Pension Benefits Other Postretirement (millions of dollars, except where stated otherwise) U.S. Non-U.S. 2023 2022 2021 2023 2022 2021 2023 2022 2021 Weighted-average assumptions used to determine net periodic benefit cost for years ended December 31 Discount rate (percent) 5.60 3.00 2.80 4.90 2.20 1.60 5.60 3.10 2.80 Long-term rate of return on funded assets (percent) 5.20 4.60 5.30 4.20 3.50 4.10 4.70 3.80 4.60 Long-term rate of compensation increase (percent) 4.50 4.50 5.50 5.20 4.20 4.20 4.50 4.50 5.50 Components of net periodic benefit cost Service cost 466 712 919 323 570 774 78 138 188 Interest cost 664 518 558 922 614 526 276 216 221 Expected return on plan assets (532) (560) (722) (688) (815) (1,031) (14) (14) (19) Amortization of actuarial loss/(gain) 85 156 244 108 180 420 (122) 6 76 Amortization of prior service cost (29) (29) (23) 52 43 57 (42) (42) (42) Net pension enhancement and curtailment/settlement cost 29 205 489 5 4 32 — — — Net periodic benefit cost 683 1,002 1,465 722 596 778 176 304 424 Changes in amounts recorded in accumulated other comprehensive income: Net actuarial loss/(gain) (39) (607) (504) 602 (1,641) (2,361) 154 (1,910) (891) Amortization of actuarial (loss)/gain (114) (361) (733) (108) (183) (430) 122 (6) (76) Prior service cost/(credit) (17) — (72) 153 84 92 (312) — — Amortization of prior service (cost)/credit 29 29 23 (52) (40) (55) 42 42 42 Foreign exchange rate changes — — — 46 (199) (255) (2) (7) — Total recorded in other comprehensive income (141) (939) (1,286) 641 (1,979) (3,009) 4 (1,881) (925) Total recorded in net periodic benefit cost and other comprehensive income, before tax 542 63 179 1,363 (1,383) (2,231) 180 (1,577) (501)
Summary Of Change In Accumulated Other Comprehensive Income	A summary of the change in accumulated other comprehensive income is shown in the table below: Total Pension and Other Postretirement Benefits (millions of dollars) 2023 2022 2021 (Charge)/credit to other comprehensive income, before tax U.S. pension 141 939 1,286 Non-U.S. pension (641) 1,979 3,009 Other postretirement benefits (4) 1,881 925 Total (charge)/credit to other comprehensive income, before tax (504) 4,799 5,220 (Charge)/credit to income tax (see Note 4) 180 (1,236) (1,287) (Charge)/credit to investment in equity companies 16 235 110 (Charge)/credit to other comprehensive income including noncontrolling interests, after tax (308) 3,798 4,043 Charge/(credit) to equity of noncontrolling interests 54 (212) (217) (Charge)/credit to other comprehensive income attributable to ExxonMobil (254) 3,586 3,826
Fair Value Of The Benefit Plan Assets (Pension)	The 2023 fair value of the benefit plan assets, including the level within the fair value hierarchy, is shown in the tables below: U.S. Pension Non-U.S. Pension (millions of dollars) Fair Value Measurement at December 31, 2023, Using: Fair Value Measurement at December 31, 2023, Using: Level 1 Level 2 Level 3 Net Asset Value Total Level 1 Level 2 Level 3 Net Asset Value Total Asset category: Equity securities U.S. — — — 2,114 2,114 — — — 2,642 2,642 Non-U.S. — — — 1,344 1,344 52 (1) — — 1,688 1,740 Private equity — — — 375 375 — — — 294 294 Debt securities Corporate — 4,699 (2) — 1 4,700 — 61 (2) — 4,370 4,431 Government — 2,650 (2) — 2 2,652 134 (3) 171 (2) — 8,429 8,734 Asset-backed — — — 1 1 — 22 (2) — 221 243 Other — — — — — — — — 4 4 Real Estate — — — — — — — — 70 70 Cash — — — 178 178 189 17 (4) — 45 251 Total at fair value — 7,349 — 4,015 11,364 375 271 — 17,763 18,409 Insurance contracts at contract value 3 22 Total plan assets 11,367 18,431 (1) For non-U.S. equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges. (2) For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions. (3) For government debt securities that are traded on active exchanges, fair value is based on observable quoted prices. (4) For cash balances that are subject to withdrawal penalties or other adjustments, the fair value is treated as a Level 2 input. The 2022 fair value of the benefit plan assets, including the level within the fair value hierarchy, is shown in the tables below: U.S. Pension Non-U.S. Pension (millions of dollars) Fair Value Measurement at December 31, 2022, Using: Fair Value Measurement at December 31, 2022, Using: Level 1 Level 2 Level 3 Net Asset Value Total Level 1 Level 2 Level 3 Net Asset Value Total Asset category: Equity securities U.S. — — — 1,726 1,726 — — — 2,318 2,318 Non-U.S. — — — 1,131 1,131 61 (1) — — 1,676 1,737 Private equity — — — 506 506 — — — 472 472 Debt securities Corporate — 4,582 (2) — 1 4,583 — 63 (2) — 4,199 4,262 Government — 2,869 (2) — 2 2,871 202 (3) 144 (2) — 7,189 7,535 Asset-backed — — — 1 1 — 22 (2) — 185 207 Cash — — — 168 168 88 40 (4) — 77 205 Total at fair value — 7,451 — 3,535 10,986 351 269 — 16,116 16,736 Insurance contracts at contract value 3 21 Total plan assets 10,989 16,757 (1) For non-U.S. equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges. (2) For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions. (3) For government debt securities that are traded on active exchanges, fair value is based on observable quoted prices. (4) For cash balances that are subject to withdrawal penalties or other adjustments, the fair value is treated as a Level 2 input.
Fair Value Of The Benefit Plan Assets (Other Postretirement)	Other Postretirement (millions of dollars) Fair Value Measurement at December 31, 2023, Using: Level 1 Level 2 Level 3 Net Asset Value Total Asset category: Equity securities U.S. 84 (1) — — — 84 Non-U.S. 40 (1) — — — 40 Debt securities Corporate — 61 (2) — — 61 Government — 182 (2) — — 182 Asset-backed — 3 (2) — — 3 Cash — 1 — — 1 Total at fair value 124 247 — — 371 (1) For equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges. (2) For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions. Other Postretirement (millions of dollars) Fair Value Measurement at December 31, 2022, Using: Level 1 Level 2 Level 3 Net Asset Value Total Asset category: Equity securities U.S. 70 (1) — — — 70 Non-U.S. 37 (1) — — — 37 Debt securities Corporate — 59 (2) — — 59 Government — 175 (2) — — 175 Asset-backed — 4 (2) — — 4 Cash — 3 — — 3 Total at fair value 107 241 — — 348 (1) For equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges. (2) For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.
Pension Plans With Accumulated Benefit Obligation In Excess Of Plan Assets	A summary of pension plans with an accumulated benefit obligation and projected benefit obligation in excess of plan assets is shown in the table below: Pension Benefits (millions of dollars) U.S. Non-U.S. 2023 2022 2023 2022 For funded pension plans with an accumulated benefit obligation in excess of plan assets: Accumulated benefit obligation — — 1,145 1,098 Fair value of plan assets — — 562 400 For funded pension plans with a projected benefit obligation in excess of plan assets: Projected benefit obligation 11,638 11,012 2,334 1,956 Fair value of plan assets 11,367 10,989 1,465 1,012 For unfunded pension plans: Projected benefit obligation 1,505 1,338 3,924 3,604 Accumulated benefit obligation 1,173 1,045 3,592 3,261
Expected Contributions and Benefit Payments for Pension Benefits And Other Postretirement Benefits	Pension Benefits Other Postretirement Benefits (millions of dollars) U.S. Non-U.S. Gross Medicare Subsidy Receipt Contributions expected in 2024 — 275 — — Benefit payments expected in: 2024 1,053 1,200 363 — 2025 1,053 1,158 356 — 2026 1,064 1,144 347 1 2027 1,066 1,185 342 1 2028 1,087 1,216 339 1 2029 - 2033 5,644 6,116 1,710 3

Disclosures About Segments An_2

Disclosures About Segments And Related Information (Tables)	12 Months Ended
	Dec. 31, 2023
Segment Reporting, Measurement Disclosures [Abstract]
Disclosures About Segments And Related Information	(millions of dollars) Upstream Energy Products Chemical Products Specialty Products Corporate and Financing Corporate Total U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. As of December 31, 2023 Earnings (loss) after income tax 4,202 17,106 6,123 6,019 1,626 11 1,536 1,178 (1,791) 36,010 Earnings of equity companies included above 63 5,550 140 131 126 761 — (25) (361) 6,385 Sales and other operating revenue 9,500 16,074 103,868 164,515 7,951 14,314 6,044 12,363 68 334,697 Intersegment revenue 20,971 38,982 23,481 28,258 7,991 3,643 2,570 555 244 — Depreciation and depletion expense 8,863 7,737 765 797 605 706 93 222 853 20,641 Interest revenue — — — — — — — — 1,628 1,628 Interest expense 82 74 4 7 2 2 — 2 676 849 Income tax expense (benefit) 1,016 10,593 1,543 1,492 396 158 458 235 (462) 15,429 Additions to property, plant and equipment 10,372 8,217 1,106 1,455 600 1,775 81 370 5,062 29,038 Investments in equity companies 4,436 21,485 406 1,135 3,086 2,700 — 952 (120) 34,080 Total assets 67,452 138,914 32,123 42,337 17,599 17,076 2,620 8,379 49,817 376,317 As of December 31, 2022 Earnings (loss) after income tax 11,728 24,751 8,340 6,626 2,328 1,215 1,190 1,225 (1,663) 55,740 Earnings of equity companies included above 411 10,133 126 322 91 771 — (23) (368) 11,463 Sales and other operating revenue 14,579 30,585 117,824 188,153 10,670 16,949 6,152 13,727 36 398,675 Intersegment revenue 25,658 46,076 29,001 36,894 9,081 5,201 2,587 825 241 — Depreciation and depletion expense 5,791 14,013 741 1,246 542 446 95 193 973 24,040 Interest revenue — — — — — — — — 446 446 Interest expense 51 38 1 7 — 1 — 1 699 798 Income tax expense (benefit) 3,330 11,575 2,615 2,420 520 292 334 252 (1,162) 20,176 Additions to property, plant and equipment 5,940 6,441 1,141 964 1,026 1,692 37 200 897 18,338 Investments in equity companies 4,893 21,502 368 1,154 3,124 2,417 — 1,177 (113) 34,522 Total assets 66,695 139,764 31,729 41,836 17,342 15,875 2,839 8,316 44,671 369,067 As of December 31, 2021 Earnings (loss) after income tax 3,663 12,112 668 (1,014) 3,697 3,292 1,452 1,807 (2,636) 23,040 Earnings of equity companies included above 288 5,535 122 100 (139) 1,141 — (36) (354) 6,657 Sales and other operating revenue 8,883 12,914 78,500 130,406 11,995 16,633 4,858 12,473 30 276,692 Intersegment revenue 16,692 33,405 16,735 25,097 5,993 4,082 2,193 749 227 — Depreciation and depletion expense 6,831 9,918 700 1,036 505 450 97 195 875 20,607 Interest revenue — — — — — — — — 33 33 Interest expense 58 36 1 6 — 1 — 1 844 947 Income tax expense (benefit) 1,116 4,871 156 (165) 1,235 684 464 329 (1,054) 7,636 Additions to property, plant and equipment 3,308 5,308 979 874 538 712 28 136 658 12,541 Investments in equity companies 4,999 18,544 353 972 3,019 2,490 — 1,185 (337) 31,225 Total assets 67,294 141,978 26,932 37,698 16,695 14,555 2,878 8,030 22,863 338,923 Due to rounding, numbers presented may not add up precisely to the totals indicated.
Disaggregation of Revenue	Sales and other operating revenue (millions of dollars) 2023 2022 2021 Revenue from contracts with customers 256,455 304,758 228,968 Revenue outside the scope of ASC 606 78,242 93,917 47,724 Total 334,697 398,675 276,692
Geographic Sales And Other Operating Revenue	Sales and other operating revenue (millions of dollars) 2023 2022 2021 United States 127,374 149,225 104,236 Non-U.S. 207,323 249,450 172,456 Total 334,697 398,675 276,692 Significant non-U.S. revenue sources include: (1) Canada 28,994 32,970 22,166 United Kingdom 23,372 33,988 14,759 Singapore 15,331 19,029 15,031 France 14,803 17,727 13,236 Australia 9,883 11,316 7,646 Belgium 9,840 11,279 9,153 Germany 9,297 10,190 7,565 (1) Revenue is determined by primary country of operations. Excludes certain sales and other operating revenues in Non-U.S. operations where attribution to a specific country is not practicable.
Schedule Of Long-Lived Assets By Geographic Regions	Long-lived assets (millions of dollars) December 31, 2023 2022 2021 United States 95,792 90,051 90,412 Non-U.S. 119,148 114,641 126,140 Total 214,940 204,692 216,552 Significant non-U.S. long-lived assets include: Canada 31,682 31,106 34,907 Singapore 12,490 11,972 11,969 Australia 11,212 11,372 12,988 Guyana 9,689 6,766 4,892 Kazakhstan 7,728 8,172 8,463 Papua New Guinea 7,433 7,338 7,534 United Arab Emirates 5,480 5,448 5,392 Brazil 4,203 3,649 4,337 China 3,669 2,350 984 Nigeria 3,319 4,090 5,235 Russia — — 4,055

Income And Other Taxes (Tables)

Income And Other Taxes (Tables)	12 Months Ended
	Dec. 31, 2023
Income And Other Taxes [Abstract]
Schedule Of Income And Other Taxes	(millions of dollars) 2023 2022 2021 U.S. Non-U.S. Total U.S. Non-U.S. Total U.S. Non-U.S. Total Income tax expense (benefit) Federal and non-U.S. Current 1,987 12,111 14,098 696 15,071 15,767 236 6,948 7,184 Deferred - net 463 481 944 4,122 (539) 3,583 870 (914) (44) U.S. tax on non-U.S. operations 315 — 315 65 — 65 26 — 26 Total federal and non-U.S. 2,765 12,592 15,357 4,883 14,532 19,415 1,132 6,034 7,166 State 72 — 72 761 — 761 470 — 470 Total income tax expense (benefit) 2,837 12,592 15,429 5,644 14,532 20,176 1,602 6,034 7,636 All other taxes and duties Other taxes and duties 3,871 25,140 29,011 4,087 23,832 27,919 3,731 26,508 30,239 Included in production and manufacturing expenses 1,961 726 2,687 2,204 862 3,066 1,589 674 2,263 Included in SG&A expenses 183 310 493 151 319 470 170 283 453 Total other taxes and duties 6,015 26,176 32,191 6,442 25,013 31,455 5,490 27,465 32,955 Total 8,852 38,768 47,620 12,086 39,545 51,631 7,092 33,499 40,591
Reconciliation Between Income Tax Expense And A Theoretical U.S. Tax	The reconciliation between income tax expense (credit) and a theoretical U.S. tax computed by applying a rate of 21 percent for 2023, 2022, and 2021 is as follows: (millions of dollars) 2023 2022 2021 Income (loss) before income taxes United States 14,786 28,281 9,478 Non-U.S. 37,997 49,472 21,756 Total 52,783 77,753 31,234 Theoretical tax 11,084 16,328 6,559 Effect of equity method of accounting (1,341) (2,407) (1,398) Non-U.S. taxes in excess of/(less than) theoretical U.S. tax (1) 5,888 6,423 2,809 State taxes, net of federal tax benefit 57 601 371 Other (259) (769) (705) Total income tax expense (credit) 15,429 20,176 7,636 Effective tax rate calculation Income tax expense (credit) 15,429 20,176 7,636 ExxonMobil share of equity company income taxes 3,058 7,594 2,756 Total income tax expense (credit) 18,487 27,770 10,392 Net income (loss) including noncontrolling interests 37,354 57,577 23,598 Total income (loss) before taxes 55,841 85,347 33,990 Effective income tax rate 33% 33% 31% (1) Includes the impact of the additional European taxes on the energy sector of $1,825 million in 2022 and $115 million in 2023.
Deferred Tax Liabilities/(Assets)	Deferred tax liabilities/(assets) are comprised of the following at December 31: Tax effects of temporary differences for: (millions of dollars) 2023 2022 Property, plant and equipment 26,627 25,607 Other liabilities 7,534 7,401 Total deferred tax liabilities 34,161 33,008 Pension and other postretirement benefits (1,777) (1,754) Asset retirement obligations (3,532) (3,045) Tax loss carryforwards (4,317) (4,862) Other assets (6,361) (6,948) Total deferred tax assets (15,987) (16,609) Asset valuation allowances 2,641 2,650 Net deferred tax liabilities 20,815 19,049
Deferred Income Tax (Assets) And Liabilities By Balance Sheet Classification	Balance sheet classification (millions of dollars) 2023 2022 Other assets, including intangibles, net (3,637) (3,825) Deferred income tax liabilities 24,452 22,874 Net deferred tax liabilities 20,815 19,049
Unrecognized Tax Benefits	The following table summarizes the movement in unrecognized tax benefits: Gross unrecognized tax benefits (millions of dollars) 2023 2022 2021 Balance at January 1 3,398 9,130 8,764 Additions based on current year's tax positions 350 539 358 Additions for prior years' tax positions 400 294 100 Reductions for prior years' tax positions (38) (6,243) (79) Reductions due to lapse of the statute of limitations (25) (16) (2) Settlements with tax authorities (153) (277) (11) Foreign exchange effects/other 3 (29) — Balance at December 31 3,935 3,398 9,130
Remaining Tax Years Subject To Examination By Major Tax Jurisdiction	The following table summarizes the tax years that remain subject to examination by major tax jurisdiction: Country of Operation Open Tax Years Australia 2010 — 2023 Belgium 2020 — 2023 Canada 2001 — 2023 Kazakhstan 2015 — 2023 Nigeria 2016 — 2023 Papua New Guinea 2008 — 2023 United Arab Emirates 2022 — 2023 United States 2010 — 2023

Mergers and Acquisitions (Table

Mergers and Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2023
Business Combination and Asset Acquisition [Abstract]
Schedule of Business Acquisitions, by Acquisition	The following table summarizes the fair values of the assets acquired and liabilities assumed: (billions of dollars) Current assets 0.4 Property, plant & equipment 6.4 Other assets 0.2 Total assets 7.0 Current liabilities 0.3 Long-term liabilities 1.6 Total liabilities 1.9 Net assets acquired 5.1

Summary Of Accounting Policie_2

Summary Of Accounting Policies (Details)	Dec. 31, 2023
Investments in refinery, chemical process, and lubes basestock manufacturing equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	25 years
Service station buildings and fixed improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	20 years

Russia (Details)

Russia (Details) Boe in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) Boe
Schedule of Impaired Long-Lived Assets Held and Used And Impact Of Expropriation [Line Items]
Impact of expropriation (after-tax) benefit	$ 1,100
Sakhalin -1 [Member]
Schedule of Impaired Long-Lived Assets Held and Used And Impact Of Expropriation [Line Items]
Asset impairment charges after tax		$ 3,400
Asset impairment charges, before-tax		$ 4,600
Proved developed and undeveloped reserves disqualified exit from operations | Boe		150

Miscellaneous Financial Infor_3

Miscellaneous Financial Information (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Research and development expense	$ 879	$ 824	$ 843
Foreign currency transaction gain/(loss), before tax	(51)	(218)	(18)
Gains/(losses) on combined effects of LIFO inventory accumulations and draw-downs	366	367	$ 54
Aggregate replacement cost of inventories estimated to exceed LIFO carrying values	$ 14,000	$ 15,000

Miscellaneous Financial Infor_4

Miscellaneous Financial Information (Crude Oil, Products And Merchandise) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Crude oil	$ 6,944	$ 6,909
Petroleum products	6,248	6,291
Chemical products	3,930	3,806
Gas/other	3,406	3,428
Total	$ 20,528	$ 20,434

Miscellaneous Financial Infor_5

Miscellaneous Financial Information (Government Assistance Narrative) (Details) - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Government Assistance [Line Items]
Government Assistance, Statement of Income or Comprehensive Income [Extensible Enumeration]	Crude oil and product purchases
Government Assistance, Affordable Fuel Pricing
Government Assistance [Line Items]
Government assistance, amount - before tax amount		$ 1.5
Government assistance, receivable		$ 0.5

Other Comprehensive Income In_3

Other Comprehensive Income Information (Schedule of Accumulated Other Comprehensive Income Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cumulative Translation Adjustment Summary [Roll Forward]
Current period change excluding amounts reclassified from accumulated other comprehensive income	$ 1,241	$ (3,482)	$ (872)
Amounts reclassified from accumulated other comprehensive income	609	0	(2)
Postretirement Benefits Reserves Adjustment [Roll Forward]
Current period change excluding amounts reclassified from accumulated other comprehensive income	(369)	3,395	3,118
Amounts reclassified from accumulated other comprehensive income	61	403	925
Accumulated Other Comprehensive Income [Roll Forward]
Balance at beginning of period	(13,270)
Balance at end of period	(11,989)	(13,270)
Exxon Mobil Corporation Share After Noncontrolling Interest [Member]
Cumulative Translation Adjustment Summary [Roll Forward]
Balance at beginning of period	(14,591)	(11,499)	(10,614)
Current period change excluding amounts reclassified from accumulated other comprehensive income	1,108	(3,092)	(883)
Amounts reclassified from accumulated other comprehensive income	427	0	(2)
Total change in accumulated other comprehensive income	1,535	(3,092)	(885)
Balance at end of period	(13,056)	(14,591)	(11,499)
Net investment hedge gain/(loss), net of taxes	(135)	230
Postretirement Benefits Reserves Adjustment [Roll Forward]
Balance at beginning of period	1,321	(2,265)	(6,091)
Current period change excluding amounts reclassified from accumulated other comprehensive income	(305)	3,205	2,938
Amounts reclassified from accumulated other comprehensive income	51	381	888
Total change in accumulated other comprehensive income	(254)	3,586	3,826
Balance at end of period	1,067	1,321	(2,265)
Accumulated Other Comprehensive Income [Roll Forward]
Balance at beginning of period	(13,270)	(13,764)	(16,705)
Current period change excluding amounts reclassified from accumulated other comprehensive income	803	113	2,055
Amounts reclassified from accumulated other comprehensive income	478	381	886
Total change in accumulated other comprehensive income	1,281	494	2,941
Balance at end of period	$ (11,989)	$ (13,270)	$ (13,764)

Other Comprehensive Income In_4

Other Comprehensive Income Information (Amounts Reclassified Out Of Acc Other Comp Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other Comprehensive Income Information Before Tax [Abstract]
Foreign exchange translation gain/(loss) included in net income (Statement of Income line: Other income)	$ (609)	$ 0	$ 2
Amortization and settlement of postretirement benefits reserves adjustment included in net periodic benefit costs (Statement of Income line: Non-service pension and postretirement benefit expense)	$ (81)	$ (519)	$ (1,229)

Other Comprehensive Income In_5

Other Comprehensive Income Information (Schedule Of Income Tax (Expense)/Credit For Components Of Other Comprehensive Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other Comprehensive Income Information Tax [Abstract]
Foreign exchange translation adjustment	$ 341	$ 54	$ (114)
Postretirement benefits reserves adjustment (excluding amortization)	200	(1,120)	(983)
Amortization and settlement of postretirement benefits reserves adjustment included in net periodic benefit costs	(20)	(116)	(304)
Total	$ 521	$ (1,182)	$ (1,401)

Cash Flow Information (Narrativ

Cash Flow Information (Narrative) (Details) - Denbury Inc. $ in Billions	Nov. 02, 2023 USD ($) shares
Equity interests issued or issuable, number of shares (in shares) | shares	46,000,000
Business acquisition, equity interest issued or issuable, value assigned | $	$ 4.8

Cash Flow Information (Cash Pay

Cash Flow Information (Cash Payments For Interest And Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Supplemental Cash Flow Information [Abstract]
Income taxes paid	$ 15,473	$ 15,364	$ 5,341
Included in cash flows from operating activities	584	666	819
Capitalized, included in cash flows from investing activities	1,152	838	655
Total cash interest paid	$ 1,736	$ 1,504	$ 1,474

Additional Working Capital In_3

Additional Working Capital Information (Schedule Of Notes, Accounts Receivable And Payable, Loans Payable, Accrued Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Notes and accounts receivable
Trade, less reserves of $170 million and $168 million	$ 30,296	$ 32,844
Other, less reserves of $101 million and $402 million	7,719	8,905
Total	38,015	41,749
Trade notes and accounts receivable, reserves	170	168
Other notes and accounts receivable, reserves	101	402
Notes and loans payable
Bank loans	6	379
Commercial paper	75	74
Long-term debt due within one year	4,009	181
Total	4,090	634
Accounts payable and accrued liabilities
Trade payables	31,249	33,169
Payables to equity companies	11,885	14,585
Accrued taxes other than income taxes	3,817	3,969
Other	11,086	11,474
Total	$ 58,037	$ 63,197

Additional Working Capital In_4

Additional Working Capital Information (Narrative) (Details) $ in Billions	Dec. 31, 2023 USD ($)
Short Term Financing [Member]
Line of Credit Facility [Line Items]
Unused credit lines	$ 0.3

Equity Company Information (Nar

Equity Company Information (Narrative) (Details) - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Share of equity company revenues from sales to consolidated companies	9%	11%	10%
Upstream
Schedule of Equity Method Investments [Line Items]
Impairment related to equity method investments	$ 0.6	$ 0.6	$ 0.2

Equity Company Information (Sch

Equity Company Information (Schedule Of Equity Company Financial Summary) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Total revenues	$ 344,582	$ 413,680	$ 285,640
Income from equity affiliates	6,385	11,463	6,657
Current assets	96,609	97,631
Total Assets	376,317	369,067	338,923
Current liabilities	65,316	69,045
Net assets	34,080	34,522	31,225
ExxonMobil [Member]
Schedule of Equity Method Investments [Line Items]
Income from equity affiliates	6,993	11,676	6,515
Net assets	32,988	33,431	29,775
Nonconsolidated Investees, Other
Schedule of Equity Method Investments [Line Items]
Income from equity affiliates	24,595	38,401	24,132
Net assets	115,321	114,994	103,966
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule of Equity Method Investments [Line Items]
Total revenues	132,783	183,812	116,972
Income before income taxes	35,999	61,550	35,142
Income taxes	11,404	23,149	11,010
Current assets	53,081	77,457	45,267
Long-term assets	150,198	153,186	150,699
Total Assets	203,279	230,643	195,966
Current liabilities	30,721	53,640	28,862
Long-term liabilities	57,237	62,009	63,138
ExxonMobil [Member]
Schedule of Equity Method Investments [Line Items]
Total revenues	40,682	57,528	34,995
Income before income taxes	10,078	19,279	9,278
Income taxes	3,085	7,603	2,763
Current assets	18,713	24,994	15,542
Long-term assets	40,986	42,921	41,614
Total Assets	59,699	67,915	57,156
Current liabilities	9,652	15,555	8,297
Long-term liabilities	$ 17,059	$ 18,929	$ 19,084

Equity Company Information (S_2

Equity Company Information (Schedule Of The Corporation's Percentage Ownership Interest) (Details)	Dec. 31, 2023
Upstream | Barzan Gas Company Limited
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	7%
Upstream | BEB Erdgas und Erdoel GmbH & Co. KG
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	50%
Upstream | Caspian Pipeline Consortium
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	8%
Upstream | Coral FLNG S.A.
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	25%
Upstream | Cross Timbers Energy LLC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	50%
Upstream | GasTerra B.V.
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	25%
Upstream | Golden Pass LNG Terminal LLC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	30%
Upstream | Golden Pass Pipeline LLC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	30%
Upstream | Marine Well Containment Company LLC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	10%
Upstream | Mozambique Rovuma Venture S.p.A.
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	36%
Upstream | Nederlandse Aardolie Maatschappij B.V.
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	50%
Upstream | Papua New Guinea Liquefied Natural Gas Global Company LDC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	33%
Upstream | Permian Highway Pipeline LLC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	17%
Upstream | QatarEnergy LNG N (2)
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	24%
Upstream | QatarEnergy LNG NFE (3)
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	25%
Upstream | QatarEnergy LNG S (1)
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	25%
Upstream | QatarEnergy LNG S (2)
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	31%
Upstream | QatarEnergy LNG S (3)
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	30%
Upstream | South Hook LNG Terminal Company Limited
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	24%
Upstream | Tengizchevroil LLP
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	25%
Upstream | Terminale GNL Adriatico S.r.l.
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	71%
Energy Products, Chemical Products, and/or Specialty Products | Al-Jubail Petrochemical Company
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	50%
Energy Products, Chemical Products, and/or Specialty Products | Alberta Products Pipe Line Ltd.
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	45%
Energy Products, Chemical Products, and/or Specialty Products | Fujian Refining & Petrochemical Co. Ltd.
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	25%
Energy Products, Chemical Products, and/or Specialty Products | Gulf Coast Growth Ventures LLC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	50%
Energy Products, Chemical Products, and/or Specialty Products | Infineum USA L.P.
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	50%
Energy Products, Chemical Products, and/or Specialty Products | Permian Express Partners LLC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	12%
Energy Products, Chemical Products, and/or Specialty Products | Saudi Aramco Mobil Refinery Company Ltd.
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	50%
Energy Products, Chemical Products, and/or Specialty Products | Saudi Yanbu Petrochemical Co.
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Interest	50%

Investments, Advances And Lon_3

Investments, Advances And Long-Term Receivables (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Long-Term Investments and Receivables, Net [Abstract]
Investments	$ 34,080	$ 34,522	$ 31,225
Advances, net of allowances of $33 million and $28 million	7,527	8,049
Total equity method company investments and advances	41,607	42,571
Equity securities carried at fair value and other investments at adjusted cost basis	177	278
Long-term receivables and miscellaneous, net of reserves of $1,966 million and $1,623 million	5,846	6,944
Total	47,630	49,793
Advances, allowances	33	28
Reserves for long-term receivables and miscellaneous investments	$ 1,966	$ 1,623

Property, Plant And Equipment_3

Property, Plant And Equipment And Asset Retirement Obligations (Property, Plant And Equipment) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment, cost	$ 487,385	$ 472,693
Property, plant and equipment, net	214,940	204,692	$ 216,552
Upstream [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, cost	359,031	350,748
Property, plant and equipment, net	148,245	144,146
Energy Products [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, cost	57,400	58,393
Property, plant and equipment, net	27,284	26,765
Chemical Products [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, cost	38,801	36,322
Property, plant and equipment, net	20,329	19,064
Specialty Products [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, cost	9,385	8,895
Property, plant and equipment, net	4,378	4,303
Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, cost	22,768	18,335
Property, plant and equipment, net	$ 14,704	$ 10,414

Property, Plant And Equipment_4

Property, Plant And Equipment And Asset Retirement Obligations (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax	$ 3,300		$ 1,200
Accumulated depreciation and depletion	272,445	$ 268,001
Long-term asset retirement obligations	11,942	9,650
Asset retirement obligations estimated cash payments in 2024	1,047
Asset retirement obligations estimated cash payments in 2025	$ 899
Impairment, long-lived asset, held-for-use, before-tax, statement of income or comprehensive income [Extensible Enumeration]	Depreciation and depletion (includes impairments), Exploration expenses, including dry holes
Sakhalin -1 [Member]
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax		4,500
Chemical Products [Member]
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax	$ 300
Energy Products [Member]
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax		400
Specialty Products [Member]
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax	100
Other Upstream [Member]
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax	$ 300	$ 1,500

Property, Plant And Equipment_5

Property, Plant And Equipment And Asset Retirement Obligations (Asset Retirement Obligations) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Balance at January 1	$ 10,491	$ 10,630	$ 11,247
Accretion expense and other provisions	734	744	548
Reduction due to property sales	(288)	(328)	(1,002)
Payments made	(693)	(518)	(444)
Liabilities incurred	831	119	42
Foreign currency translation	124	(330)	(147)
Revisions	1,790	174	386
Balance at December 31	$ 12,989	$ 10,491	$ 10,630

Accounting For Suspended Expl_3

Accounting For Suspended Exploratory Well Costs (Change In Capitalized Suspended Exploratory Well Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Increase (Decrease) in Capitalized Exploratory Well Costs that are Pending Determination of Proved Reserves [Roll Forward]
Balance beginning at January 1	$ 3,512	$ 4,120	$ 4,382
Additions pending the determination of proved reserves	200	378	420
Charged to expense	(95)	(259)	(325)
Reclassifications to wells, facilities and equipment based on the determination of proved reserves	(142)	(142)	(328)
Divestments/Other	84	(585)	(29)
Ending balance at December 31	3,559	3,512	4,120
Ending balance attributed to equity companies included above	$ 306	$ 306	$ 306

Accounting For Suspended Expl_4

Accounting For Suspended Exploratory Well Costs (Schedule Of Period End Capitalized Suspended Exploratory Well Costs) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Capitalized Exploratory Well Costs [Line Items]
Capitalized for a period of one year or less	$ 200	$ 378	$ 420
Capitalized for a period greater than one year - subtotal	3,359	3,134	3,700
Total	3,559	3,512	4,120	$ 4,382
Capitalized For A Period Of Between One And Five Years [Member]
Capitalized Exploratory Well Costs [Line Items]
Capitalized for a period greater than one year - subtotal	1,030	969	1,642
Capitalized For A Period Of Between Five And Ten Years [Member]
Capitalized Exploratory Well Costs [Line Items]
Capitalized for a period greater than one year - subtotal	1,411	1,410	1,657
Capitalized For A Period Of Greater Than Ten Years [Member]
Capitalized Exploratory Well Costs [Line Items]
Capitalized for a period greater than one year - subtotal	$ 918	$ 755	$ 401

Accounting For Suspended Expl_5

Accounting For Suspended Exploratory Well Costs (Schedule Of Number Of Projects With Suspended Exploratory Well Costs) (Details) - project	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Capitalized Exploratory Well Costs [Abstract]
Number of projects that only have exploratory well costs capitalized for a period of one year or less	0	10	4
Number of projects that have exploratory well costs capitalized for a period greater than one year	31	26	30
Total	31	36	34

Accounting For Suspended Expl_6

Accounting For Suspended Exploratory Well Costs (Narrative) (Details) $ in Millions	Dec. 31, 2023 USD ($) project	Dec. 31, 2022 USD ($) project	Dec. 31, 2021 USD ($) project	Dec. 31, 2020 USD ($)
Exploratory Wells Drilled [Line Items]
Number of projects that have exploratory well costs capitalized for a period greater than one year	31	26	30
Number of projects that have drilling in the preceding twelve months or exploratory activity planned in the next two years as of December 31.	16
Number of projects with completed exploratory activity progressing toward development as of December 31	15
Capitalized exploratory well costs | $	$ 3,559	$ 3,512	$ 4,120	$ 4,382
Fifteen Projects
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs | $	$ 2,389

Accounting For Suspended Expl_7

Accounting For Suspended Exploratory Well Costs (Schedule Of Additional Detail For The Projects) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 3,559	$ 3,512	$ 4,120	$ 4,382
Fifteen Projects
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	2,389
Angola | Projects in Angola - Block 32 Central NE Hub [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 66
Angola | Minimum [Member] | Projects in Angola - Block 32 Central NE Hub [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2007
Angola | Maximum [Member] | Projects in Angola - Block 32 Central NE Hub [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2021
Argentina | Project in Argentina - La Invernada [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 72
Argentina | Minimum [Member] | Project in Argentina - La Invernada [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2014
Argentina | Maximum [Member] | Project in Argentina - La Invernada [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2014
Australia | Project in Australia - Gorgon Area Ullage [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 308
Australia | Minimum [Member] | Project in Australia - Gorgon Area Ullage [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	1994
Australia | Maximum [Member] | Project in Australia - Gorgon Area Ullage [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2015
Canada | Project in Canada - Hibernia North [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 25
Canada | Minimum [Member] | Project in Canada - Hibernia North [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2019
Canada | Maximum [Member] | Project in Canada - Hibernia North [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2019
Guyana | Project in Guyana - Whiptail [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 178
Guyana | Minimum [Member] | Project in Guyana - Whiptail [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2019
Guyana | Maximum [Member] | Project in Guyana - Whiptail [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2022
Kazakhstan | Project in Kazakhstan - Kairan [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 53
Kazakhstan | Minimum [Member] | Project in Kazakhstan - Kairan [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2004
Kazakhstan | Maximum [Member] | Project in Kazakhstan - Kairan [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2007
Mozambique | Project in Mozambique - Rovuma LNG Phase 1 [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 150
Mozambique | Project in Mozambique - Rovuma LNG Future Non-Straddling Train [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	120
Mozambique | Project in Mozambique - Rovuma LNG Unitized Trains [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 35
Mozambique | Minimum [Member] | Project in Mozambique - Rovuma LNG Phase 1 [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2017
Mozambique | Minimum [Member] | Project in Mozambique - Rovuma LNG Future Non-Straddling Train [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2017
Mozambique | Minimum [Member] | Project in Mozambique - Rovuma LNG Unitized Trains [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2017
Mozambique | Maximum [Member] | Project in Mozambique - Rovuma LNG Phase 1 [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2017
Mozambique | Maximum [Member] | Project in Mozambique - Rovuma LNG Future Non-Straddling Train [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2017
Mozambique | Maximum [Member] | Project in Mozambique - Rovuma LNG Unitized Trains [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2017
Nigeria | Project in Nigeria - Bonga North [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 34
Nigeria | Minimum [Member] | Project in Nigeria - Bonga North [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2004
Nigeria | Maximum [Member] | Project in Nigeria - Bonga North [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2009
Papua New Guinea | Project in Papua New Guinea - Papua LNG [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 246
Papua New Guinea | Project In Papua New Guinea - Muruk [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	165
Papua New Guinea | Project in Papua New Guinea - P'nyang [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 116
Papua New Guinea | Minimum [Member] | Project in Papua New Guinea - Papua LNG [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2017
Papua New Guinea | Minimum [Member] | Project In Papua New Guinea - Muruk [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2017
Papua New Guinea | Minimum [Member] | Project in Papua New Guinea - P'nyang [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2012
Papua New Guinea | Maximum [Member] | Project in Papua New Guinea - Papua LNG [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2017
Papua New Guinea | Maximum [Member] | Project In Papua New Guinea - Muruk [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2019
Papua New Guinea | Maximum [Member] | Project in Papua New Guinea - P'nyang [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2018
Tanzania | Project in Tanzania - Tanzania Block 2 [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 525
Tanzania | Minimum [Member] | Project in Tanzania - Tanzania Block 2 [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2012
Tanzania | Maximum [Member] | Project in Tanzania - Tanzania Block 2 [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2015
Vietnam | Project in Vietnam - Blue Whale [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 296
Vietnam | Minimum [Member] | Project in Vietnam - Blue Whale [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2011
Vietnam | Maximum [Member] | Project in Vietnam - Blue Whale [Member]
Exploratory Wells Drilled [Line Items]
Years Wells Drilled / Acquired	2015

Leases (Lease Cost) (Details)

Leases (Lease Cost) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Lease [Member]
Schedule of Operating and Finance Lease Cost [Line Items]
Operating lease cost	$ 1,976	$ 1,776	$ 1,542
Short-term and other (net of sublease rental income)	1,563	1,389	1,351
Total	3,539	3,165	2,893
Finance Lease [Member]
Schedule of Operating and Finance Lease Cost [Line Items]
Amortization of right of use assets	107	243	133
Interest on lease liabilities	140	210	158
Total	247	453	291
Drilling Rigs and Related Equipment [Member]
Schedule of Operating and Finance Lease Cost [Line Items]
Total	$ 999	$ 908	$ 681

Leases (Right of Use) (Details)

Leases (Right of Use) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Operating Leases
Operating lease right of use asset	$ 6,849	$ 6,451
Operating lease liability - current included in Accounts payable and accrued liabilities	1,617	1,527
Operating lease liability - noncurrent included in Other long-term obligations	4,393	4,067
Total operating lease liability	$ 6,010	$ 5,594
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets, including intangibles – net	Other assets, including intangibles – net
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accounts payable and accrued liabilities	Accounts payable and accrued liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other long-term obligations	Other long-term obligations
Operating lease weighted average remaining lease term - years	8 years	9 years
Operating lease weighted average discount rate - percent	3.90%	2.40%
Leases, Finance [Abstract]
Finance lease right of use asset	$ 2,712	$ 2,090
Total finance lease liability	$ 2,042	$ 1,589
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant and equipment, at cost, less accumulated depreciation and depletion	Property, plant and equipment, at cost, less accumulated depreciation and depletion
Finance lease weighted average remaining lease term - years	26 years	22 years
Finance lease weighted average discount rate - percent	7.20%	8%
Accounts Payable And Accrued Liabilities [Member]
Leases, Finance [Abstract]
Finance lease liability - current	$ 5	$ 5
Notes And Loans Payable [Member]
Leases, Finance [Abstract]
Finance lease liability - current	95	69
Long-Term Debt [Member]
Leases, Finance [Abstract]
Finance lease liability - noncurrent	1,821	1,389
Long-Term Obligations To Equity Companies [Member]
Leases, Finance [Abstract]
Finance lease liability - noncurrent	121	126
Drilling Rigs and Related Equipment [Member]
Operating Leases
Total operating lease liability	$ 2,032	$ 1,646

Leases (Maturity Schedule) (Det

Leases (Maturity Schedule) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Operating Leases
Total operating lease liability	$ 6,010	$ 5,594
Finance Leases
Total finance lease liability	2,042	$ 1,589
Operating Lease [Member]
Operating Leases
2024	1,807
2025	1,464
2026	1,046
2027	577
2028	307
2029 and beyond	1,781
Total operating lease payments	6,982
Operating lease - discount to present value	(972)
Total operating lease liability	6,010
Finance Lease [Member]
Finance Leases
2024	243
2025	237
2026	234
2027	224
2028	241
2029 and beyond	2,256
Total finance lease payments	3,435
Finance lease - discount to present value	(1,393)
Total finance lease liability	$ 2,042

Leases (Narrative) (Details)

Leases (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)
Lessee Lease Description [Line Items]
Estimated 2024 cash payments for operating and finance leases not yet commenced	$ 267
Estimated 2025 cash payments for operating and finance leases not yet commenced	331
Operating Lease [Member]
Lessee Lease Description [Line Items]
Additional undiscounted commitments for leases not yet commenced	4,063
Finance Lease [Member]
Lessee Lease Description [Line Items]
Additional undiscounted commitments for leases not yet commenced	$ 2,256

Leases (Other Information) (Det

Leases (Other Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Lease [Member]
Lessee Lease Description [Line Items]
Cash flows from operating activities - operating leases	$ 1,135	$ 1,119	$ 1,135
Cash flow from investing activities	758	500	291
Operating right-of-use assets obtained in exchange for new lease liabilities	2,161	1,997	1,405
Finance Lease Paid To Equity Company [Member]
Lessee Lease Description [Line Items]
Cash flows from operating activities - finance leases	20	20	20
Finance Lease Paid To Third Parties [Member]
Lessee Lease Description [Line Items]
Cash flow from financing activities	86	149	110
Finance right-of-use assets obtained in exchange for new lease liabilities	$ 529	$ 73	$ 200

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings per common share
Net income (loss) attributable to ExxonMobil	$ 36,010	$ 55,740	$ 23,040
Weighted average number of common shares outstanding (in shares)	4,052	4,205	4,275
Earnings (loss) per common share, basic (in dollars per share)	$ 8.89	$ 13.26	$ 5.39
Earnings (loss) per common share, diluted (in dollars per share)	8.89	13.26	5.39
Dividends paid per common share (in dollars per share)	$ 3.68	$ 3.55	$ 3.49

Financial Instruments And Der_3

Financial Instruments And Derivatives - Financial Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Total Gross Assets & Liabilities [Domain]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative assets	$ 6,275	$ 7,764
Advances to/receivables from equity companies	7,008	7,364
Other long-term financial assets	2,333	2,621
Derivative liabilities	5,664	6,681
Long-term debt	32,560	34,998
Long-term obligations to equity companies	1,896	2,467
Other long-term financial liabilities	$ 697	$ 679
Derivative asset, current, statement of financial position [Extensible Enumeration]	Other assets, including intangibles – net, Receivables, Net, Current	Other assets, including intangibles – net, Receivables, Net, Current
Derivative liability, current, statement of financial position [Extensible Enumeration]	Accounts payable and accrued liabilities, Other long-term obligations	Accounts payable and accrued liabilities, Other long-term obligations
Effect Of Counterparty Netting [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative assets	$ (5,177)	$ (5,778)
Derivative liabilities	(5,177)	(5,778)
Effect Of Collateral Netting [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative assets	(528)	(969)
Derivative liabilities	(40)	(79)
Difference In Carrying Value And Fair Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Advances to/receivables from equity companies	519	685
Other long-term financial assets	202	346
Long-term debt	3,102	4,173
Long-term obligations to equity companies	(92)	(129)
Other long-term financial liabilities	45	38
Net Carrying Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative assets	570	1,017
Advances to/receivables from equity companies	7,527	8,049
Other long-term financial assets	2,535	2,967
Derivative liabilities	447	824
Long-term debt	35,662	39,171
Long-term obligations to equity companies	1,804	2,338
Other long-term financial liabilities	742	717
Level 1 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative assets	4,544	4,309
Other long-term financial assets	1,389	1,208
Derivative liabilities	4,056	3,417
Long-term debt	30,556	33,112
Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative assets	1,731	3,455
Advances to/receivables from equity companies	2,517	2,406
Derivative liabilities	1,608	3,264
Long-term debt	2,004	1,880
Level 3 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Advances to/receivables from equity companies	4,491	4,958
Other long-term financial assets	944	1,413
Long-term debt	0	6
Long-term obligations to equity companies	1,896	2,467
Other long-term financial liabilities	$ 697	$ 679

Financial Instruments And Der_4

Financial Instruments And Derivatives (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Financial Instruments And Derivatives [Abstract]
Initial margin collateral receivable	$ 800	$ 1,494

Financial Instruments and Der_5

Financial Instruments and Derivatives - Derivative Instrument Balance Sheet (Details) bbl in Millions, MMBTU in Millions	12 Months Ended
	Dec. 31, 2023 MMBTU bbl	Dec. 31, 2022 MMBTU bbl
Crude Oil [Member] | Long [Member]
Net notional long / short position of derivative instruments bbl		4
Crude Oil [Member] | Short [Member]
Net notional long / short position of derivative instruments bbl	7
Petroleum Products [Member] | Short [Member]
Net notional long / short position of derivative instruments bbl	43	52
Natural Gas [Member] | Short [Member]
Net notional long / short position of derivative instruments MMBtus | MMBTU	560	64

Financial Instruments and Der_6

Financial Instruments and Derivatives - Derivative Instruments (Details) - Not Designated As Hedging Instrument, Trading [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Realized and Unrealized Before-Tax Gain / Loss on Derivative Instruments Recognized in the Consolidated Statement of Income
Total	$ 1,065	$ (1,449)	$ (3,770)
Sales and other operating revenue
Realized and Unrealized Before-Tax Gain / Loss on Derivative Instruments Recognized in the Consolidated Statement of Income
Total	986	(1,763)	(3,818)
Crude oil and product purchases
Realized and Unrealized Before-Tax Gain / Loss on Derivative Instruments Recognized in the Consolidated Statement of Income
Total	$ 79	$ 314	$ 48

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)
Long-term Debt [Line Items]
Long-term debt in U.S. dollars	$ 32,510
U.S. dollar equivalent at year-end exchange rates of amounts payable in foreign currencies	4,973
Portion of long-term debt included in current liability	4,009
Long-term debt maturing - 2025	5,371
Long-term debt maturing - 2026	3,651
Long-term debt maturing - 2027	1,098
Long-term debt maturing - 2028	1,207
Net investment hedge, European business	$ 5,000
Other U.S. Dollar Obligations [Member] | Exxon Mobil Corporation [Member] | Two Point Seven Two Six Notes Due 2023 [Member]
Long-term Debt [Line Items]
Interest rate	2.726%
Other U.S. Dollar Obligations [Member] | Exxon Mobil Corporation [Member] | OnePointFiveSevenOneNotesDue2023 [Member]
Long-term Debt [Line Items]
Interest rate	1.571%
Long Term Financing [Member]
Long-term Debt [Line Items]
Unused credit lines	$ 1,300

Long-Term Debt (Summarized Long

Long-Term Debt (Summarized Long-Term Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Long-term Debt [Line Items]
Debt issuance costs	$ (88)	$ (100)
Long-term debt	37,483	40,559
Exxon Mobil Corporation [Member]
Long-term Debt [Line Items]
Debt instrument, unamortized premium	97	115
XTO Energy Inc. [Member]
Long-term Debt [Line Items]
Debt instrument, unamortized premium	71	76
3.176% notes due 2024 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 0	1,000
Interest rate	3.176%
2.019% notes due 2024 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 0	1,000
Interest rate	2.019%
2.709% notes due 2025 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 1,750	1,750
Interest rate	2.709%
2.992% notes due 2025 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 2,767	2,781
Interest rate	2.992%
3.043% notes due 2026 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 2,500	2,500
Interest rate	3.043%
2.275% notes due 2026 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 1,000	1,000
Interest rate	2.275%
3.294% notes due 2027 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 1,000	1,000
Interest rate	3.294%
2.440% notes due 2029 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 1,250	1,250
Interest rate	2.44%
3.482% notes due 2030 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 2,000	2,000
Interest rate	3.482%
2.610% notes due 2030 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 2,000	2,000
Interest rate	2.61%
2.995% notes due 2039 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 750	750
Interest rate	2.995%
4.227% notes due 2040 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 2,080	2,084
Interest rate	4.227%
3.567% notes due 2045 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 1,000	1,000
Interest rate	3.567%
4.114% notes due 2046 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 2,500	2,500
Interest rate	4.114%
3.095% notes due 2049 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 1,500	1,500
Interest rate	3.095%
4.327% notes due 2050 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 2,750	2,750
Interest rate	4.327%
3.452% notes due 2051 | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 2,750	2,750
Interest rate	3.452%
0.142% notes due 2024 | Exxon Mobil Corporation - Euro-denominated | Other Foreign Currency Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 0	1,600
Interest rate	0.142%
0.524% notes due 2028 | Exxon Mobil Corporation - Euro-denominated | Other Foreign Currency Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 1,105	1,066
Interest rate	0.524%
0.835% notes due 2032 | Exxon Mobil Corporation - Euro-denominated | Other Foreign Currency Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 1,105	1,066
Interest rate	0.835%
1.408% notes due 2039 | Exxon Mobil Corporation - Euro-denominated | Other Foreign Currency Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 1,105	1,066
Interest rate	1.408%
6.100% senior notes due 2036 | XTO Energy Inc. [Member] | Senior Notes [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 189	189
Interest rate	6.10%
6.750% senior notes due 2037 | XTO Energy Inc. [Member] | Senior Notes [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 286	289
Interest rate	6.75%
6.375% senior notes due 2038 | XTO Energy Inc. [Member] | Senior Notes [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent	$ 223	224
Interest rate	6.375%
Industrial revenue bonds due 2022-2051 | Combined Exxon Mobil And Affiliates [Member]
Long-term Debt [Line Items]
Other long-term debt	$ 2,123	2,245
Average effective interest rate	3.08%
Finance leases & other obligations | Combined Exxon Mobil And Affiliates [Member]
Long-term Debt [Line Items]
Average effective interest rate	5.985%
Finance lease liability - noncurrent included in Long-term debt	$ 3,838	$ 3,299

Incentive Program (Narrative) (

Incentive Program (Narrative) (Details) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Minimum ownership of affiliates needed for awards	50%
Options and stock appreciation rights grant, minimum percentage of market value, date of grant	100%
Share-based compensation arrangement by share-based payment award expiration period	10 years
Number of shares issuable under 2003 incentive program, maximum	220,000
Remaining shares available for award under 2003 incentive program	54,000
Restricted Stock [Member]
Long-term incentive awards (in shares)	9,701	9,392	8,133
Percent of the shares in each award vesting after three years	50%
Percent of the shares in each award vesting after seven years	50%
Percent of shares in each award vesting after five years	50%
Percent of shares in each award vesting in later of ten years or retirement	50%
Unrecognized compensation cost	$ 2,120
Unrecognized compensation cost, weighted-average period of recognition, years	4 years 8 months 12 days
Compensation cost charged against income	$ 611	$ 648	$ 612
Income tax benefit recognized in income	50	52	49
Fair value of shares/awards vested	892	1,027	562
Cash payments, vested restricted stock units	$ 79	$ 89	$ 48
Restricted Stock [Member] | Management, Professional, And Technical Participants
Vesting period	3 years
Restricted Stock [Member] | Minimum [Member]
Vesting period	3 years
Restricted Stock [Member] | Minimum [Member] | Executive Officer [Member]
Vesting period	5 years
Restricted Stock [Member] | Maximum [Member]
Vesting period	7 years
Restricted Stock [Member] | Maximum [Member] | Executive Officer [Member] | Share-based Payment Arrangement, Tranche One [Member]
Vesting period	10 years
Restricted Stock [Member] | Maximum [Member] | Executive Officer [Member] | Share-based Payment Arrangement, Tranche Two [Member]
Vesting period	10 years

Incentive Program (Summary Of R

Incentive Program (Summary Of Restricted Stock And Units Outstanding) (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Shares
Issued and outstanding at January 1 (shares) | shares	37,573
Awards issued in 2023 (shares) | shares	9,247
Vested (shares) | shares	(8,572)
Forfeited (shares) | shares	(436)
Issued and outstanding at December 31 (shares) | shares	37,812
Weighted-Average Grant-Date Fair Value per Share
Issued and outstanding at January 1 (USD per share) | $ / shares	$ 67.47
Awards issued in 2023 (USD per share) | $ / shares	110.84
Vested (USD per share) | $ / shares	67.75
Forfeited (USD per share) | $ / shares	73.62
Issued and outstanding at December 31 (USD per share) | $ / shares	$ 77.94

Incentive Program (Grant Value

Incentive Program (Grant Value Of Restricted Stock Units) (Details) - Restricted Stock [Member] - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant price, per share	$ 103.16	$ 110.46	$ 62.76
Units settled in stock	$ 900	$ 931	$ 461
Units settled in cash	101	106	49
Total value	$ 1,001	$ 1,037	$ 510

Litigation And Other Continge_3

Litigation And Other Contingencies (Schedule Of Guarantees) (Details) $ in Millions	Dec. 31, 2023 USD ($)
Loss Contingencies [Line Items]
Guarantees	$ 7,807
Equity Company Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	1,862
Other Third-Party Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	5,945
Debt-Related Guarantees [Member]
Loss Contingencies [Line Items]
Guarantees	1,300
Debt-Related Guarantees [Member] | Equity Company Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	1,151
Debt-Related Guarantees [Member] | Other Third-Party Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	149
Other Guarantees [Member]
Loss Contingencies [Line Items]
Guarantees	6,507
Other Guarantees [Member] | Equity Company Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	711
Other Guarantees [Member] | Other Third-Party Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	$ 5,796

Pension And Other Postretirem_3

Pension And Other Postretirement Benefits (Benefit Obligations And Plan Assets Associated With Principal Benefit Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Change in benefit obligation
Medicare subsidy receipts	$ 19	$ 24
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate (percent)	5.30%	5.60%
Long-term rate of compensation increase (percent)	4.50%	4.50%
Change in benefit obligation
Benefit obligation at January 1	$ 5,211	$ 7,265
Service cost	78	138	$ 188
Interest cost	276	216	221
Actuarial loss/(gain)	176	(1,990)
Benefits paid	(545)	(492)
Foreign exchange rate changes	11	(47)
Amendments, divestments and other	(193)	121
Benefit obligation at December 31	$ 5,014	$ 5,211	7,265
United States | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate (percent)	5.30%	5.60%
Long-term rate of compensation increase (percent)	4.50%	4.50%
Change in benefit obligation
Benefit obligation at January 1	$ 12,350	$ 18,511
Service cost	466	712	919
Interest cost	664	518	558
Actuarial loss/(gain)	550	(4,432)
Benefits paid	(870)	(2,959)
Amendments, divestments and other	(17)	0
Benefit obligation at December 31	13,143	12,350	18,511
Accumulated benefit obligation at December 31	$ 11,033	$ 10,367
Pension Benefits - Non-U.S. [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate (percent)	4.30%	4.90%
Long-term rate of compensation increase (percent)	4.50%	5.20%
Change in benefit obligation
Benefit obligation at January 1	$ 19,342	$ 29,492
Service cost	323	570	774
Interest cost	922	614	526
Actuarial loss/(gain)	1,393	(7,742)
Benefits paid	(1,214)	(1,415)
Foreign exchange rate changes	515	(2,258)
Amendments, divestments and other	46	81
Benefit obligation at December 31	21,327	19,342	$ 29,492
Accumulated benefit obligation at December 31	$ 19,769	$ 18,047

Pension And Other Postretirem_4

Pension And Other Postretirement Benefits (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate	4%
Year that rate reaches ultimate trend rate	2025
Costs for defined contribution plans	$ 383	$ 365	$ 177
Equity Securities [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	35%
Equity Securities [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	10%
Venture Capital Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	5%

Pension And Other Postretirem_5

Pension And Other Postretirement Benefits (Change In Plan Assets Of Pension And Other Postretirement Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Other Postretirement Benefits [Member]
Change in plan assets
Fair value at January 1	$ 348	$ 440
Actual return on plan assets	36	(66)
Company contribution	38	27
Benefits paid	(51)	(53)
Fair value at December 31	371	348
United States
Change in plan assets
Fair value at January 1	10,989
Fair value at December 31	11,367	10,989
United States | Pension Plans, Defined Benefit [Member]
Change in plan assets
Fair value at January 1	10,989	13,266
Actual return on plan assets	1,121	(3,265)
Company contribution	0	3,596
Benefits paid	(743)	(2,608)
Fair value at December 31	11,367	10,989
Pension Benefits - Non-U.S. [Member]
Change in plan assets
Fair value at January 1	16,757
Fair value at December 31	18,431	16,757
Pension Benefits - Non-U.S. [Member] | Pension Plans, Defined Benefit [Member]
Change in plan assets
Fair value at January 1	16,757	24,880
Actual return on plan assets	1,484	(5,287)
Foreign exchange rate changes	492	(2,012)
Company contribution	615	655
Benefits paid	(878)	(1,070)
Other	(39)	(409)
Fair value at December 31	$ 18,431	$ 16,757

Pension And Other Postretirem_6

Pension And Other Postretirement Benefits (Summary Of Assets In Excess Of/(Less Than) Benefit Obligation) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
United States
Defined Benefit Plan Disclosure [Line Items]
Funded plans	$ (271)	$ (23)
Unfunded plans	(1,505)	(1,338)
Total	(1,776)	(1,361)
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Funded plans	1,028	1,019
Unfunded plans	(3,924)	(3,604)
Total	$ (2,896)	$ (2,585)

Pension And Other Postretirem_7

Pension And Other Postretirement Benefits (Assets Recorded In Balance Sheet And Other Comprehensive Income) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Postretirement benefits reserves	$ (10,496)	$ (10,045)
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Balance at December 31	(4,643)	(4,863)
Current liabilities	(288)	(304)
Postretirement benefits reserves	(4,355)	(4,559)
Total recorded	(4,643)	(4,863)
Net actuarial loss/(gain)	(1,453)	(1,726)
Prior service cost	(459)	(190)
Total recorded in accumulated other comprehensive income	(1,912)	(1,916)
United States
Defined Benefit Plan Disclosure [Line Items]
Balance at December 31	(1,776)	(1,361)
Total recorded	(1,776)	(1,361)
United States | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Balance at December 31	(1,776)	(1,361)
Current liabilities	(201)	(168)
Postretirement benefits reserves	(1,575)	(1,193)
Total recorded	(1,776)	(1,361)
Net actuarial loss/(gain)	744	897
Prior service cost	(283)	(295)
Total recorded in accumulated other comprehensive income	461	602
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Balance at December 31	(2,896)	(2,585)
Total recorded	(2,896)	(2,585)
Pension Benefits - Non-U.S. [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Balance at December 31	(2,896)	(2,585)
Other assets	1,895	1,962
Current liabilities	(225)	(254)
Postretirement benefits reserves	(4,566)	(4,293)
Total recorded	(2,896)	(2,585)
Net actuarial loss/(gain)	1,364	846
Prior service cost	401	278
Total recorded in accumulated other comprehensive income	$ 1,765	$ 1,124

Pension And Other Postretirem_8

Pension And Other Postretirement Benefits (Long-Term Rates Of Pension And Other Postretirement Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Total recorded in other comprehensive income	$ 504	$ (4,799)	$ (5,220)
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate (percent)	5.60%	3.10%	2.80%
Long-term rate of return on funded assets (percent)	4.70%	3.80%	4.60%
Long-term rate of compensation increase (percent)	4.50%	4.50%	5.50%
Service cost	$ 78	$ 138	$ 188
Interest cost	276	216	221
Expected return on plan assets	(14)	(14)	(19)
Amortization of actuarial loss/(gain)	(122)	6	76
Amortization of prior service cost	(42)	(42)	(42)
Net periodic benefit cost	176	304	424
Net actuarial loss/(gain)	154	(1,910)	(891)
Amortization of actuarial (loss)/gain	122	(6)	(76)
Prior service cost/(credit)	(312)	0	0
Amortization of prior service (cost)/credit	42	42	42
Foreign exchange rate changes	(2)	(7)	0
Total recorded in other comprehensive income	4	(1,881)	(925)
Total recorded in net periodic benefit cost and other comprehensive income, before tax	180	(1,577)	(501)
United States
Defined Benefit Plan Disclosure [Line Items]
Total recorded in other comprehensive income	$ (141)	$ (939)	$ (1,286)
United States | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate (percent)	5.60%	3%	2.80%
Long-term rate of return on funded assets (percent)	5.20%	4.60%	5.30%
Long-term rate of compensation increase (percent)	4.50%	4.50%	5.50%
Service cost	$ 466	$ 712	$ 919
Interest cost	664	518	558
Expected return on plan assets	(532)	(560)	(722)
Amortization of actuarial loss/(gain)	85	156	244
Amortization of prior service cost	(29)	(29)	(23)
Net pension enhancement and curtailment/settlement cost	29	205	489
Net periodic benefit cost	683	1,002	1,465
Net actuarial loss/(gain)	(39)	(607)	(504)
Amortization of actuarial (loss)/gain	(114)	(361)	(733)
Prior service cost/(credit)	(17)	0	(72)
Amortization of prior service (cost)/credit	29	29	23
Total recorded in other comprehensive income	(141)	(939)	(1,286)
Total recorded in net periodic benefit cost and other comprehensive income, before tax	542	63	179
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Total recorded in other comprehensive income	$ 641	$ (1,979)	$ (3,009)
Pension Benefits - Non-U.S. [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate (percent)	4.90%	2.20%	1.60%
Long-term rate of return on funded assets (percent)	4.20%	3.50%	4.10%
Long-term rate of compensation increase (percent)	5.20%	4.20%	4.20%
Service cost	$ 323	$ 570	$ 774
Interest cost	922	614	526
Expected return on plan assets	(688)	(815)	(1,031)
Amortization of actuarial loss/(gain)	108	180	420
Amortization of prior service cost	52	43	57
Net pension enhancement and curtailment/settlement cost	5	4	32
Net periodic benefit cost	722	596	778
Net actuarial loss/(gain)	602	(1,641)	(2,361)
Amortization of actuarial (loss)/gain	(108)	(183)	(430)
Prior service cost/(credit)	153	84	92
Amortization of prior service (cost)/credit	(52)	(40)	(55)
Foreign exchange rate changes	46	(199)	(255)
Total recorded in other comprehensive income	641	(1,979)	(3,009)
Total recorded in net periodic benefit cost and other comprehensive income, before tax	$ 1,363	$ (1,383)	$ (2,231)

Pension And Other Postretirem_9

Pension And Other Postretirement Benefits (Summary Of The Change In Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Total (charge)/credit to other comprehensive income, before tax	$ (504)	$ 4,799	$ 5,220
(Charge)/credit to income tax (see Note 4)	180	(1,236)	(1,287)
(Charge)/credit to investment in equity companies	16	235	110
(Charge)/credit to other comprehensive income including noncontrolling interests, after tax	(308)	3,798	4,043
Charge/(credit) to equity of noncontrolling interests	54	(212)	(217)
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total (charge)/credit to other comprehensive income, before tax	(4)	1,881	925
Exxon Mobil Corporation Share After Noncontrolling Interest [Member]
Defined Benefit Plan Disclosure [Line Items]
Total change in accumulated other comprehensive income	(254)	3,586	3,826
United States
Defined Benefit Plan Disclosure [Line Items]
Total (charge)/credit to other comprehensive income, before tax	141	939	1,286
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Total (charge)/credit to other comprehensive income, before tax	$ (641)	$ 1,979	$ 3,009

Pension And Other Postretire_10

Pension And Other Postretirement Benefits (Fair Value Of Benefit Plan Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
United States
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 11,367	$ 10,989
United States | Total At Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	4,015	3,535
Fair value of plan assets	11,364	10,986
United States | U.S. Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	2,114	1,726
Fair value of plan assets	2,114	1,726
United States | Non-U.S. Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	1,344	1,131
Fair value of plan assets	1,344	1,131
United States | Private Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	375	506
Fair value of plan assets	375	506
United States | Corporate Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	1	1
Fair value of plan assets	4,700	4,583
United States | Government Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	2	2
Fair value of plan assets	2,652	2,871
United States | Asset-Backed Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	1	1
Fair value of plan assets	1	1
United States | Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	178	168
Fair value of plan assets	178	168
United States | Insurance Contracts At Contract Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3	3
United States | Fair Value Inputs Level 2 [Member] | Total At Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	7,349	7,451
United States | Fair Value Inputs Level 2 [Member] | Corporate Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	4,699	4,582
United States | Fair Value Inputs Level 2 [Member] | Government Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	2,650	2,869
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	18,431	16,757
Pension Benefits - Non-U.S. [Member] | Total At Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	17,763	16,116
Fair value of plan assets	18,409	16,736
Pension Benefits - Non-U.S. [Member] | U.S. Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	2,642	2,318
Fair value of plan assets	2,642	2,318
Pension Benefits - Non-U.S. [Member] | Non-U.S. Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	1,688	1,676
Fair value of plan assets	1,740	1,737
Pension Benefits - Non-U.S. [Member] | Private Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	294	472
Fair value of plan assets	294	472
Pension Benefits - Non-U.S. [Member] | Corporate Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	4,370	4,199
Fair value of plan assets	4,431	4,262
Pension Benefits - Non-U.S. [Member] | Government Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	8,429	7,189
Fair value of plan assets	8,734	7,535
Pension Benefits - Non-U.S. [Member] | Asset-Backed Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	221	185
Fair value of plan assets	243	207
Pension Benefits - Non-U.S. [Member] | Other Debt Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	4
Fair value of plan assets	4
Pension Benefits - Non-U.S. [Member] | Defined Benefit Plan, Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	70
Fair value of plan assets	70
Pension Benefits - Non-U.S. [Member] | Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	45	77
Fair value of plan assets	251	205
Pension Benefits - Non-U.S. [Member] | Insurance Contracts At Contract Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	22	21
Pension Benefits - Non-U.S. [Member] | Fair Value Inputs Level 1 [Member] | Total At Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	375	351
Pension Benefits - Non-U.S. [Member] | Fair Value Inputs Level 1 [Member] | Non-U.S. Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	52	61
Pension Benefits - Non-U.S. [Member] | Fair Value Inputs Level 1 [Member] | Government Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	134	202
Pension Benefits - Non-U.S. [Member] | Fair Value Inputs Level 1 [Member] | Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	189	88
Pension Benefits - Non-U.S. [Member] | Fair Value Inputs Level 2 [Member] | Total At Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	271	269
Pension Benefits - Non-U.S. [Member] | Fair Value Inputs Level 2 [Member] | Corporate Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	61	63
Pension Benefits - Non-U.S. [Member] | Fair Value Inputs Level 2 [Member] | Government Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	171	144
Pension Benefits - Non-U.S. [Member] | Fair Value Inputs Level 2 [Member] | Asset-Backed Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	22	22
Pension Benefits - Non-U.S. [Member] | Fair Value Inputs Level 2 [Member] | Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	$ 17	$ 40

Pension And Other Postretire_11

Pension And Other Postretirement Benefits (Fair Value Of Benefit Plan Assets - Other Postretirement) (Details) - Other Postretirement Benefit Plans Defined Benefit [Member] - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	$ 0	$ 0
Fair value of plan assets	371	348	$ 440
U.S. Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	0	0
Fair value of plan assets	84	70
Non-U.S. Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	0	0
Fair value of plan assets	40	37
Corporate Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	61	59
Government Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	182	175
Asset-backed Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3	4
Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	0	0
Fair value of plan assets	1	3
Fair Value Inputs Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	124	107
Fair Value Inputs Level 1 [Member] | U.S. Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	84	70
Fair Value Inputs Level 1 [Member] | Non-U.S. Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	40	37
Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	247	241
Fair Value Inputs Level 2 [Member] | Corporate Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	61	59
Fair Value Inputs Level 2 [Member] | Government Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	182	175
Fair Value Inputs Level 2 [Member] | Asset-backed Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	3	4
Fair Value Inputs Level 2 [Member] | Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	$ 1	$ 3

Pension And Other Postretire_12

Pension And Other Postretirement Benefits (Pension Plans With Accumulated Benefit Obligation In Excess Of Plan Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
United States | Funded Pension Plans [Member]
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract]
Accumulated benefit obligation	$ 0	$ 0
Fair value of plan assets	0	0
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets [Abstract]
Projected benefit obligation	11,638	11,012
Fair value of plan assets	11,367	10,989
United States | Unfunded Pension Plans [Member]
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract]
Accumulated benefit obligation	1,173	1,045
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets [Abstract]
Projected benefit obligation	1,505	1,338
Pension Benefits - Non-U.S. [Member] | Funded Pension Plans [Member]
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract]
Accumulated benefit obligation	1,145	1,098
Fair value of plan assets	562	400
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets [Abstract]
Projected benefit obligation	2,334	1,956
Fair value of plan assets	1,465	1,012
Pension Benefits - Non-U.S. [Member] | Unfunded Pension Plans [Member]
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract]
Accumulated benefit obligation	3,592	3,261
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets [Abstract]
Projected benefit obligation	$ 3,924	$ 3,604

Pension And Other Postretire_13

Pension And Other Postretirement Benefits (Expected Contribution Pension Benefits And Other Postretirement Benefits) (Details) $ in Millions	Dec. 31, 2023 USD ($)
Gross Other Post Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefits payments expected in 2024	$ 363
Benefits payments expected in 2025	356
Benefits payments expected in 2026	347
Benefits payments expected in 2027	342
Benefits payments expected in 2028	339
Benefits payments expected in 2029-2033	1,710
Other Postretirement Benefits Medicare Subsidy Receipt [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefits payments expected in 2024	0
Benefits payments expected in 2025	0
Benefits payments expected in 2026	1
Benefits payments expected in 2027	1
Benefits payments expected in 2028	1
Benefit payments expected in 2029-2033	3
United States
Defined Benefit Plan Disclosure [Line Items]
Contributions expected in 2024	0
Benefits payments expected in 2024	1,053
Benefits payments expected in 2025	1,053
Benefits payments expected in 2026	1,064
Benefits payments expected in 2027	1,066
Benefits payments expected in 2028	1,087
Benefits payments expected in 2029-2033	5,644
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions expected in 2024	275
Benefits payments expected in 2024	1,200
Benefits payments expected in 2025	1,158
Benefits payments expected in 2026	1,144
Benefits payments expected in 2027	1,185
Benefits payments expected in 2028	1,216
Benefits payments expected in 2029-2033	$ 6,116

Disclosures About Segments An_3

Disclosures About Segments And Related Information (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting, Measurement Disclosures [Abstract]
Non-debt-related interest expense	$ 234	$ 117	$ 103

Disclosures About Segments An_4

Disclosures About Segments And Related Information (Schedule Of Segments And Related Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Earnings (loss) after income tax	$ 36,010	$ 55,740	$ 23,040
Earnings of equity companies included above	6,385	11,463	6,657
Sales and other operating revenue	344,582	413,680	285,640
Depreciation and depletion expense	20,641	24,040	20,607
Interest revenue	1,628	446	33
Interest expense	849	798	947
Income tax expense (benefit)	15,429	20,176	7,636
Additions to property, plant and equipment	29,038	18,338	12,541
Investments in equity companies	34,080	34,522	31,225
Total Assets	376,317	369,067	338,923
Sales and other operating revenue
Segment Reporting Information [Line Items]
Sales and other operating revenue	334,697	398,675	276,692
United States
Segment Reporting Information [Line Items]
Income tax expense (benefit)	2,837	5,644	1,602
United States | Sales and other operating revenue
Segment Reporting Information [Line Items]
Sales and other operating revenue	127,374	149,225	104,236
Non-U.S.
Segment Reporting Information [Line Items]
Income tax expense (benefit)	12,592	14,532	6,034
Non-U.S. | Sales and other operating revenue
Segment Reporting Information [Line Items]
Sales and other operating revenue	207,323	249,450	172,456
Upstream | United States
Segment Reporting Information [Line Items]
Earnings (loss) after income tax	4,202	11,728	3,663
Earnings of equity companies included above	63	411	288
Intersegment revenue	20,971	25,658	16,692
Depreciation and depletion expense	8,863	5,791	6,831
Interest revenue	0	0	0
Interest expense	82	51	58
Income tax expense (benefit)	1,016	3,330	1,116
Additions to property, plant and equipment	10,372	5,940	3,308
Investments in equity companies	4,436	4,893	4,999
Total Assets	67,452	66,695	67,294
Upstream | United States | Sales and other operating revenue
Segment Reporting Information [Line Items]
Sales and other operating revenue	9,500	14,579	8,883
Upstream | Non-U.S.
Segment Reporting Information [Line Items]
Earnings (loss) after income tax	17,106	24,751	12,112
Earnings of equity companies included above	5,550	10,133	5,535
Intersegment revenue	38,982	46,076	33,405
Depreciation and depletion expense	7,737	14,013	9,918
Interest revenue	0	0	0
Interest expense	74	38	36
Income tax expense (benefit)	10,593	11,575	4,871
Additions to property, plant and equipment	8,217	6,441	5,308
Investments in equity companies	21,485	21,502	18,544
Total Assets	138,914	139,764	141,978
Upstream | Non-U.S. | Sales and other operating revenue
Segment Reporting Information [Line Items]
Sales and other operating revenue	16,074	30,585	12,914
Energy Products [Member] | United States
Segment Reporting Information [Line Items]
Earnings (loss) after income tax	6,123	8,340	668
Earnings of equity companies included above	140	126	122
Intersegment revenue	23,481	29,001	16,735
Depreciation and depletion expense	765	741	700
Interest revenue	0	0	0
Interest expense	4	1	1
Income tax expense (benefit)	1,543	2,615	156
Additions to property, plant and equipment	1,106	1,141	979
Investments in equity companies	406	368	353
Total Assets	32,123	31,729	26,932
Energy Products [Member] | United States | Sales and other operating revenue
Segment Reporting Information [Line Items]
Sales and other operating revenue	103,868	117,824	78,500
Energy Products [Member] | Non-U.S.
Segment Reporting Information [Line Items]
Earnings (loss) after income tax	6,019	6,626	(1,014)
Earnings of equity companies included above	131	322	100
Intersegment revenue	28,258	36,894	25,097
Depreciation and depletion expense	797	1,246	1,036
Interest revenue	0	0	0
Interest expense	7	7	6
Income tax expense (benefit)	1,492	2,420	(165)
Additions to property, plant and equipment	1,455	964	874
Investments in equity companies	1,135	1,154	972
Total Assets	42,337	41,836	37,698
Energy Products [Member] | Non-U.S. | Sales and other operating revenue
Segment Reporting Information [Line Items]
Sales and other operating revenue	164,515	188,153	130,406
Chemical Products [Member] | United States
Segment Reporting Information [Line Items]
Earnings (loss) after income tax	1,626	2,328	3,697
Earnings of equity companies included above	126	91	(139)
Intersegment revenue	7,991	9,081	5,993
Depreciation and depletion expense	605	542	505
Interest revenue	0	0	0
Interest expense	2	0	0
Income tax expense (benefit)	396	520	1,235
Additions to property, plant and equipment	600	1,026	538
Investments in equity companies	3,086	3,124	3,019
Total Assets	17,599	17,342	16,695
Chemical Products [Member] | United States | Sales and other operating revenue
Segment Reporting Information [Line Items]
Sales and other operating revenue	7,951	10,670	11,995
Chemical Products [Member] | Non-U.S.
Segment Reporting Information [Line Items]
Earnings (loss) after income tax	11	1,215	3,292
Earnings of equity companies included above	761	771	1,141
Intersegment revenue	3,643	5,201	4,082
Depreciation and depletion expense	706	446	450
Interest revenue	0	0	0
Interest expense	2	1	1
Income tax expense (benefit)	158	292	684
Additions to property, plant and equipment	1,775	1,692	712
Investments in equity companies	2,700	2,417	2,490
Total Assets	17,076	15,875	14,555
Chemical Products [Member] | Non-U.S. | Sales and other operating revenue
Segment Reporting Information [Line Items]
Sales and other operating revenue	14,314	16,949	16,633
Specialty Products [Member] | United States
Segment Reporting Information [Line Items]
Earnings (loss) after income tax	1,536	1,190	1,452
Earnings of equity companies included above	0	0	0
Intersegment revenue	2,570	2,587	2,193
Depreciation and depletion expense	93	95	97
Interest revenue	0	0	0
Interest expense	0	0	0
Income tax expense (benefit)	458	334	464
Additions to property, plant and equipment	81	37	28
Investments in equity companies	0	0	0
Total Assets	2,620	2,839	2,878
Specialty Products [Member] | United States | Sales and other operating revenue
Segment Reporting Information [Line Items]
Sales and other operating revenue	6,044	6,152	4,858
Specialty Products [Member] | Non-U.S.
Segment Reporting Information [Line Items]
Earnings (loss) after income tax	1,178	1,225	1,807
Earnings of equity companies included above	(25)	(23)	(36)
Intersegment revenue	555	825	749
Depreciation and depletion expense	222	193	195
Interest revenue	0	0	0
Interest expense	2	1	1
Income tax expense (benefit)	235	252	329
Additions to property, plant and equipment	370	200	136
Investments in equity companies	952	1,177	1,185
Total Assets	8,379	8,316	8,030
Specialty Products [Member] | Non-U.S. | Sales and other operating revenue
Segment Reporting Information [Line Items]
Sales and other operating revenue	12,363	13,727	12,473
Corporate And Financing [Member]
Segment Reporting Information [Line Items]
Earnings (loss) after income tax	(1,791)	(1,663)	(2,636)
Earnings of equity companies included above	(361)	(368)	(354)
Intersegment revenue	244	241	227
Depreciation and depletion expense	853	973	875
Interest revenue	1,628	446	33
Interest expense	676	699	844
Income tax expense (benefit)	(462)	(1,162)	(1,054)
Additions to property, plant and equipment	5,062	897	658
Investments in equity companies	(120)	(113)	(337)
Total Assets	49,817	44,671	22,863
Corporate And Financing [Member] | Sales and other operating revenue
Segment Reporting Information [Line Items]
Sales and other operating revenue	$ 68	$ 36	$ 30

Disclosures About Segments An_5

Disclosures About Segments And Related Information ( Sales and Other Operating Revenues) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Total	$ 344,582	$ 413,680	$ 285,640
Sales and other operating revenue
Disaggregation of Revenue [Line Items]
Sales and other operating revenue	256,455	304,758	228,968
Revenue outside the scope of ASC 606	78,242	93,917	47,724
Total	$ 334,697	$ 398,675	$ 276,692

Disclosures About Segments An_6

Disclosures About Segments And Related Information (Schedule Of Geographic Sales And Other Operating Revenue) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Revenue Reconciling Item [Line Items]
Total	$ 344,582	$ 413,680	$ 285,640
Sales and other operating revenue
Segment Reporting Revenue Reconciling Item [Line Items]
Total	334,697	398,675	276,692
United States | Sales and other operating revenue
Segment Reporting Revenue Reconciling Item [Line Items]
Total	127,374	149,225	104,236
Non-U.S. | Sales and other operating revenue
Segment Reporting Revenue Reconciling Item [Line Items]
Total	207,323	249,450	172,456
Canada | Sales and other operating revenue
Segment Reporting Revenue Reconciling Item [Line Items]
Total	28,994	32,970	22,166
United Kingdom | Sales and other operating revenue
Segment Reporting Revenue Reconciling Item [Line Items]
Total	23,372	33,988	14,759
Singapore | Sales and other operating revenue
Segment Reporting Revenue Reconciling Item [Line Items]
Total	15,331	19,029	15,031
France | Sales and other operating revenue
Segment Reporting Revenue Reconciling Item [Line Items]
Total	14,803	17,727	13,236
Australia | Sales and other operating revenue
Segment Reporting Revenue Reconciling Item [Line Items]
Total	9,883	11,316	7,646
Belgium | Sales and other operating revenue
Segment Reporting Revenue Reconciling Item [Line Items]
Total	9,840	11,279	9,153
Germany | Sales and other operating revenue
Segment Reporting Revenue Reconciling Item [Line Items]
Total	$ 9,297	$ 10,190	$ 7,565

Disclosures About Segments An_7

Disclosures About Segments And Related Information (Schedule Of Long-Lived Assets By Geographic Regions) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 214,940	$ 204,692	$ 216,552
United States
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	95,792	90,051	90,412
Non-U.S.
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	119,148	114,641	126,140
Canada
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	31,682	31,106	34,907
Singapore
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	12,490	11,972	11,969
Australia
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	11,212	11,372	12,988
Guyana
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	9,689	6,766	4,892
Kazakhstan
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	7,728	8,172	8,463
Papua New Guinea
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	7,433	7,338	7,534
United Arab Emirates
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	5,480	5,448	5,392
Brazil
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	4,203	3,649	4,337
China
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	3,669	2,350	984
Nigeria
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	3,319	4,090	5,235
Russia
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 0	$ 0	$ 4,055

Income And Other Taxes (Narrati

Income And Other Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income And Other Taxes [Abstract]
Net deferred income tax expense (credits)/changes for tax rate and law changes		$ 24	$ 30	$ (53)
Effective income tax rate reconciliation, European tax on energy sector, amount	$ 1,800	$ 200
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21%	21%	21%
Valuation Allowance [Abstract]
Asset valuation allowances	2,650	$ 2,641	$ 2,650
Valuation allowance change		$ (9)
Potential percentage increase in unrecognized tax benefits		20%
Potential percentage decrease in unrecognized tax benefits		30%
Interest expense on income tax reserves		$ 60	16	$ 0
Interest payable on income tax reserves	$ 63	134	$ 63
Change in net provisions [Member]
Valuation Allowance [Abstract]
Valuation allowance change		104
Effects of foreign currency translation [Member]
Valuation Allowance [Abstract]
Valuation allowance change		$ (113)

Income And Other Taxes (Schedul

Income And Other Taxes (Schedule Of Income And Other Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income and Other Taxes [Line Items]
Current	$ 14,098	$ 15,767	$ 7,184
Deferred - net	944	3,583	(44)
U.S. tax on non-U.S. operations	315	65	26
Total federal and non-U.S.	15,357	19,415	7,166
State	72	761	470
Total income tax expense (benefit)	15,429	20,176	7,636
Other taxes and duties	29,011	27,919	30,239
Other taxes and duties included in production and manufacturing expenses	2,687	3,066	2,263
Other taxes and duties included in SG&A expenses	493	470	453
Total other taxes and duties	32,191	31,455	32,955
Total	47,620	51,631	40,591
United States
Income and Other Taxes [Line Items]
Current	1,987	696	236
Deferred - net	463	4,122	870
U.S. tax on non-U.S. operations	315	65	26
Total federal and non-U.S.	2,765	4,883	1,132
State	72	761	470
Total income tax expense (benefit)	2,837	5,644	1,602
Other taxes and duties	3,871	4,087	3,731
Other taxes and duties included in production and manufacturing expenses	1,961	2,204	1,589
Other taxes and duties included in SG&A expenses	183	151	170
Total other taxes and duties	6,015	6,442	5,490
Total	8,852	12,086	7,092
Non-U.S.
Income and Other Taxes [Line Items]
Current	12,111	15,071	6,948
Deferred - net	481	(539)	(914)
Total federal and non-U.S.	12,592	14,532	6,034
Total income tax expense (benefit)	12,592	14,532	6,034
Other taxes and duties	25,140	23,832	26,508
Other taxes and duties included in production and manufacturing expenses	726	862	674
Other taxes and duties included in SG&A expenses	310	319	283
Total other taxes and duties	26,176	25,013	27,465
Total	$ 38,768	$ 39,545	$ 33,499

Income And Other Taxes (Reconci

Income And Other Taxes (Reconciliation Between Income Tax Expense And Theoretical U.S. Tax) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income And Other Taxes [Abstract]
United States income (loss) before income taxes	$ 14,786	$ 28,281	$ 9,478
Non-U.S. income (loss) before income taxes	37,997	49,472	21,756
Income (loss) before income taxes	52,783	77,753	31,234
Theoretical tax	11,084	16,328	6,559
Effect of equity method of accounting	(1,341)	(2,407)	(1,398)
Non-U.S. taxes in excess of/(less than) theoretical U.S. tax	5,888	6,423	2,809
State taxes, net of federal tax benefit	57	601	371
Other	(259)	(769)	(705)
Total income tax expense (benefit)	15,429	20,176	7,636
ExxonMobil share of equity company income taxes	3,058	7,594	2,756
Total income tax expense (credit)	18,487	27,770	10,392
Net income (loss) including noncontrolling interests	37,354	57,577	23,598
Total income (loss) before taxes	$ 55,841	$ 85,347	$ 33,990
Effective income tax rate	33%	33%	31%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21%	21%	21%
Effective Tax Rate [Line Items]
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	$ 24	$ 30	$ (53)
United States
Income And Other Taxes [Abstract]
Total income tax expense (benefit)	2,837	5,644	1,602
Non-U.S.
Income And Other Taxes [Abstract]
Total income tax expense (benefit)	12,592	14,532	$ 6,034
Effective Tax Rate [Line Items]
European tax impact	$ 115	$ 1,825

Income And Other Taxes (Deferre

Income And Other Taxes (Deferred Income Taxes Assets And Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Income And Other Taxes [Abstract]
Property, plant and equipment	$ 26,627	$ 25,607
Other liabilities	7,534	7,401
Total deferred tax liabilities	34,161	33,008
Pension and other postretirement benefits	(1,777)	(1,754)
Asset retirement obligations	(3,532)	(3,045)
Tax loss carryforwards	(4,317)	(4,862)
Other assets	(6,361)	(6,948)
Total deferred tax assets	(15,987)	(16,609)
Asset valuation allowances	2,641	2,650
Net deferred tax liabilities	$ 20,815	$ 19,049

Income And Other Taxes (Defer_2

Income And Other Taxes (Deferred Income Tax (Assets) And Liabilities By Balance Sheet Classification) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Income And Other Taxes [Abstract]
Other assets, including intangibles, net	$ (3,637)	$ (3,825)
Deferred income tax liabilities	24,452	22,874
Net deferred tax liabilities	$ 20,815	$ 19,049

Income And Other Taxes (Unrecog

Income And Other Taxes (Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Unrecognized Tax Benefits [Roll Forward]
Balance at January 1	$ 3,398	$ 9,130	$ 8,764
Additions based on current year's tax positions	350	539	358
Additions for prior years' tax positions	400	294	100
Reductions for prior years' tax positions	(38)	(6,243)	(79)
Reductions due to lapse of the statute of limitations	(25)	(16)	(2)
Settlements with tax authorities	(153)	(277)	(11)
Foreign exchange effects/other	3	(29)	0
Balance at December 31	$ 3,935	$ 3,398	$ 9,130

Income And Other Taxes (Remaini

Income And Other Taxes (Remaining Tax Years Subject To Examination By Major Tax Jurisdiction) (Details)	12 Months Ended
	Dec. 31, 2023
Australia | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2010
Australia | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2023
Belgium | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2020
Belgium | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2023
Canada | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2001
Canada | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2023
Kazakhstan | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2015
Kazakhstan | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2023
Nigeria | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2016
Nigeria | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2023
Papua New Guinea | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2008
Papua New Guinea | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2023
United Arab Emirates | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2022
United Arab Emirates | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2023
United States | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2010
United States | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2023

Divestment Activities (Narrativ

Divestment Activities (Narrative) (Details) - Disposal Group, Disposed of by Sale - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Sale of Productive Assets	$ 4.1	$ 5.2
Disposal Group Not Discontinued Operation Gain Loss On Disposal, After Tax	$ 0.6	$ 0.4

Mergers and Acquisitions (Narra

Mergers and Acquisitions (Narrative) (Details) a in Thousands, Boe in Thousands, $ in Billions		3 Months Ended
	Nov. 02, 2023 USD ($) Boe shares	Jun. 30, 2024 USD ($) shares	Sep. 30, 2023 Boe	Dec. 31, 2022 a Boe
Denbury Inc.
Business Acquisition [Line Items]
Proved developed and undeveloped reserve, net (energy) (Barrel of oil equivalent) | Boe	200,000
Proved developed and undeveloped reserve, net (energy) per day (barrel of oil equivalent per day) | Boe	45
Total purchase price | $	$ 5.1
Equity interests issued or issuable, number of shares (in shares) | shares	46,000,000
Business acquisition, equity interest issued or issuable, value assigned | $	$ 4.8
Payments to acquire businesses, gross | $	$ 0.3
Pioneer Natural Resources
Business Acquisition [Line Items]
Proved developed and undeveloped reserve, net (energy) (Barrel of oil equivalent) | Boe				2,300,000
Proved developed and undeveloped reserve, net (energy) per day (barrel of oil equivalent per day) | Boe			700
Area of land | a				850
Pioneer Natural Resources | Forecast [Member]
Business Acquisition [Line Items]
Total purchase price | $		$ 65
Equity interests issued or issuable, number of shares (in shares) | shares		546,000,000
Business combination number of shares of acquirer stock issued in exchange for each share of acquiree stock		2.3234

Mergers and Acquisitions (Net A

Mergers and Acquisitions (Net Assets Acquired) (Details) - Denbury Inc. $ in Billions	Nov. 02, 2023 USD ($)
Business Acquisition [Line Items]
Current assets	$ 0.4
Property, plant & equipment	6.4
Other assets	0.2
Total assets	7
Current liabilities	0.3
Long-term liabilities	1.6
Total liabilities	1.9
Net assets acquired	$ 5.1