10-K

 

2017

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

☑     ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2017

or

☐     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                to               

Commission File Number 1-2256

EXXON MOBIL CORPORATION

(Exact name of registrant as specified in its charter)

NEW JERSEY	13-5409005
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)

5959 LAS COLINAS BOULEVARD, IRVING, TEXAS 75039-2298

(Address of principal executive offices) (Zip Code)

(972) 940-6000

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class	Name of Each Exchange on Which Registered
Common Stock, without par value (4,237,462,159 shares outstanding at January 31, 2018)	New York Stock  Exchange

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes   ☑     No   ☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes   ☐    No   ☑

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes   ☑     No   ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes   ☑     No   ☐

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.   ☑

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or emerging growth company.  See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☑	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.   ☐

Indicate by check mark whether the registrant is a shell company (as defined by Rule 12b-2 of the Act).    Yes   ☐     No   ☑

The aggregate market value of the voting stock held by non-affiliates of the registrant on June 30, 2017, the last business day of the registrant’s most recently completed second fiscal quarter, based on the closing price on that date of $80.73 on the New York Stock Exchange composite tape, was in excess of $342 billion.

Documents Incorporated by Reference:  Proxy Statement for the 2018 Annual Meeting of Shareholders (Part III)

EXXON MOBIL CORPORATION

FORM 10-K

FOR THE FISCAL YEAR ENDED DECEMBER 31, 2017

TABLE OF CONTENTS

PART I
Item 1.	Business	1
Item 1A.	Risk Factors	2
Item 1B.	Unresolved Staff Comments	4
Item 2.	Properties	5
Item 3.	Legal Proceedings	26
Item 4.	Mine Safety Disclosures	26
Executive Officers of the Registrant [pursuant to Instruction 3 to Regulation S-K, Item 401(b)]		27
PART II
Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	30
Item 6.	Selected Financial Data	30
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	30
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	31
Item 8.	Financial Statements and Supplementary Data	31
Item 9.	Changes in and Disagreements With Accountants on Accounting and Financial Disclosure	31
Item 9A.	Controls and Procedures	31
Item 9B.	Other Information	31
PART III
Item 10.	Directors, Executive Officers and Corporate Governance	32
Item 11.	Executive Compensation	32
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	32
Item 13.	Certain Relationships and Related Transactions, and Director Independence	33
Item 14.	Principal Accounting Fees and Services	33
PART IV
Item 15.	Exhibits, Financial Statement Schedules	33
Item 16.	Form 10-K Summary	33
Financial Section		34
Index to Exhibits		120
Signatures		121
Exhibit 12 — Computation of Ratio of Earnings to Fixed Charges
Exhibit 18 — Preferability Letter
Exhibits 31 and 32 — Certifications

PART I

ITEM 1.       BUSINESS

Exxon Mobil Corporation was incorporated in the State of New Jersey in 1882. Divisions and affiliated companies of ExxonMobil operate or market products in the United States and most other countries of the world. Their principal business is energy, involving exploration for, and production of, crude oil and natural gas, manufacture of petroleum products and transportation and sale of crude oil, natural gas and petroleum products. ExxonMobil is a major manufacturer and marketer of commodity petrochemicals, including olefins, aromatics, polyethylene and polypropylene plastics and a wide variety of specialty products. Affiliates of ExxonMobil conduct extensive research programs in support of these businesses.

Exxon Mobil Corporation has several divisions and hundreds of affiliates, many with names that include ExxonMobil, Exxon, Esso, Mobil or XTO. For convenience and simplicity, in this report the terms ExxonMobil, Exxon, Esso, Mobil and XTO, as well as terms like Corporation, Company, our, we  and its, are sometimes used as abbreviated references to specific affiliates or groups of affiliates. The precise meaning depends on the context in question.

The energy and petrochemical industries are highly competitive. There is competition within the industries and also with other industries in supplying the energy, fuel and chemical needs of both industrial and individual consumers. The Corporation competes with other firms in the sale or purchase of needed goods and services in many national and international markets and employs all methods of competition which are lawful and appropriate for such purposes.

Operating data and industry segment information for the Corporation are contained in the Financial Section of this report under the following: “Quarterly Information”, “Note 18: Disclosures about Segments and Related Information” and “Operating Information”. Information on oil and gas reserves is contained in the “Oil and Gas Reserves” part of the “Supplemental Information on Oil and Gas Exploration and Production Activities” portion of the Financial Section of this report.

ExxonMobil has a long‑standing commitment to the development of proprietary technology. We have a wide array of research programs designed to meet the needs identified in each of our business segments. Information on Company‑sponsored research and development spending is contained in “Note 3: Miscellaneous Financial Information” of the Financial Section of this report. ExxonMobil held over 12 thousand active patents worldwide at the end of 2017. For technology licensed to third parties, revenues totaled approximately $89 million in 2017. Although technology is an important contributor to the overall operations and results of our Company, the profitability of each business segment is not dependent on any individual patent, trade secret, trademark, license, franchise or concession.

The number of regular employees was 69.6 thousand, 71.1 thousand, and 73.5 thousand at years ended 2017, 2016 and 2015, respectively. Regular employees are defined as active executive, management, professional, technical and wage employees who work full time or part time for the Corporation and are covered by the Corporation’s benefit plans and programs. Regular employees do not include employees of the company‑operated retail sites (CORS). The number of CORS employees was 1.6 thousand, 1.6 thousand, and 2.1 thousand at years ended 2017, 2016 and 2015, respectively.

Throughout ExxonMobil’s businesses, new and ongoing measures are taken to prevent and minimize the impact of our operations on air, water and ground. These include a significant investment in refining infrastructure and technology to manufacture clean fuels, as well as projects to monitor and reduce nitrogen oxide, sulfur oxide and greenhouse gas emissions, and expenditures for asset retirement obligations. Using definitions and guidelines established by the American Petroleum Institute, ExxonMobil’s 2017 worldwide environmental expenditures for all such preventative and remediation steps, including ExxonMobil’s share of equity company expenditures, were $4.7 billion, of which $3.3 billion were included in expenses with the remainder in capital expenditures. The total cost for such activities is expected to increase to approximately $5 billion in 2018 and 2019. Capital expenditures are expected to account for approximately 30 percent of the total.

Information concerning the source and availability of raw materials used in the Corporation’s business, the extent of seasonality in the business, the possibility of renegotiation of profits or termination of contracts at the election of governments and risks attendant to foreign operations may be found in “Item 1A. Risk Factors” and “Item 2. Properties” in this report.

ExxonMobil maintains a website at exxonmobil.com. Our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and any amendments to those reports filed or furnished pursuant to Section 13(a) of the Securities Exchange Act of 1934 are made available through our website as soon as reasonably practical after we electronically file or furnish the reports to the Securities and Exchange Commission (SEC). Also available on the Corporation’s website are the Company’s Corporate Governance Guidelines and Code of Ethics and Business Conduct, as well as the charters of the audit, compensation and nominating committees of the Board of Directors. Information on our website is not incorporated into this report.

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ITEM 1A.       RISK FACTORS

ExxonMobil’s financial and operating results are subject to a variety of risks inherent in the global oil, gas, and petrochemical businesses. Many of these risk factors are not within the Company’s control and could adversely affect our business, our financial and operating results, or our financial condition. These risk factors include:

Supply and Demand

The oil, gas, and petrochemical businesses are fundamentally commodity businesses. This means ExxonMobil’s operations and earnings may be significantly affected by changes in oil, gas, and petrochemical prices and by changes in margins on refined products. Oil, gas, petrochemical, and product prices and margins in turn depend on local, regional, and global events or conditions that affect supply and demand for the relevant commodity. Any material decline in oil or natural gas prices could have a material adverse effect on certain of the Company’s operations, especially in the Upstream segment, financial condition, and proved reserves. On the other hand, a material increase in oil or natural gas prices could have a material adverse effect on certain of the Company’s operations, especially in the Downstream and Chemical segments.

Economic conditions. The demand for energy and petrochemicals is generally linked closely with broad-based economic activities and levels of prosperity. The occurrence of recessions or other periods of low or negative economic growth will typically have a direct adverse impact on our results. Other factors that affect general economic conditions in the world or in a major region, such as changes in population growth rates, periods of civil unrest, government austerity programs, or currency exchange rate fluctuations, can also impact the demand for energy and petrochemicals. Sovereign debt downgrades, defaults, inability to access debt markets due to credit or legal constraints, liquidity crises, the breakup or restructuring of fiscal, monetary, or political systems such as the European Union, and other events or conditions that impair the functioning of financial markets and institutions also pose risks to ExxonMobil, including risks to the safety of our financial assets and to the ability of our partners and customers to fulfill their commitments to ExxonMobil.

Other demand-related factors. Other factors that may affect the demand for oil, gas, and petrochemicals, and therefore impact our results, include technological improvements in energy efficiency; seasonal weather patterns, which affect the demand for energy associated with heating and cooling; increased competitiveness of alternative energy sources that have so far generally not been competitive with oil and gas without the benefit of government subsidies or mandates; changes in technology or consumer preferences that alter fuel choices, such as technological advances in energy storage that make wind and solar more competitive for power generation or increased consumer demand for alternative fueled or electric vehicles; and broad-based changes in personal income levels.

Other supply-related factors. Commodity prices and margins also vary depending on a number of factors affecting supply. For example, increased supply from the development of new oil and gas supply sources and technologies to enhance recovery from existing sources tend to reduce commodity prices to the extent such supply increases are not offset by commensurate growth in demand. Similarly, increases in industry refining or petrochemical manufacturing capacity relative to demand tend to reduce margins on the affected products. World oil, gas, and petrochemical supply levels can also be affected by factors that reduce available supplies, such as adherence by member countries to OPEC production quotas and the occurrence of wars, hostile actions, natural disasters, disruptions in competitors’ operations, or unexpected unavailability of distribution channels that may disrupt supplies. Technological change can also alter the relative costs for competitors to find, produce, and refine oil and gas and to manufacture petrochemicals.

Other market factors. ExxonMobil’s business results are also exposed to potential negative impacts due to changes in interest rates, inflation, currency exchange rates, and other local or regional market conditions.

Government and Political Factors

ExxonMobil’s results can be adversely affected by political or regulatory developments affecting our operations.

Access limitations. A number of countries limit access to their oil and gas resources, or may place resources off-limits from development altogether. Restrictions on foreign investment in the oil and gas sector tend to increase in times of high commodity prices, when national governments may have less need of outside sources of private capital. Many countries also restrict the import or export of certain products based on point of origin.

Restrictions on doing business. ExxonMobil is subject to laws and sanctions imposed by the United States or by other jurisdictions where we do business that may prohibit ExxonMobil or certain of its affiliates from doing business in certain countries, or restricting the kind of business that may be conducted. Such restrictions may provide a competitive advantage to competitors who may not be subject to comparable restrictions.

Lack of legal certainty. Some countries in which we do business lack well-developed legal systems, or have not yet adopted, or may be unable to maintain, clear regulatory frameworks for oil and gas development. Lack of legal certainty exposes our operations to increased risk of adverse or unpredictable actions by government officials, and also makes it more difficult for us to enforce our contracts. In some cases these risks can be partially offset by agreements to arbitrate disputes in an international forum, but the adequacy of this remedy may still depend on the local legal system to enforce an award.

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Regulatory and litigation risks. Even in countries with well-developed legal systems where ExxonMobil does business, we remain exposed to changes in law (including changes that result from international treaties and accords) that could adversely affect our results, such as:

· increases in taxes, duties, or government royalty rates (including retroactive claims);

· price controls;

· changes in environmental regulations or other laws that increase our cost of compliance or reduce or delay available business opportunities (including changes in laws related to offshore drilling operations, water use, methane emissions, or hydraulic fracturing);

· adoption of regulations mandating efficiency standards, the use of alternative fuels or uncompetitive fuel components;

· adoption of government payment transparency regulations that could require us to disclose competitively sensitive commercial information, or that could cause us to violate the non-disclosure laws of other countries; and

· government actions to cancel contracts, re-denominate the official currency, renounce or default on obligations, renegotiate terms unilaterally, or expropriate assets.

Legal remedies available to compensate us for expropriation or other takings may be inadequate.

We also may be adversely affected by the outcome of litigation, especially in countries such as the United States in which very large and unpredictable punitive damage awards may occur, or by government enforcement proceedings alleging non-compliance with applicable laws or regulations.

Security concerns. Successful operation of particular facilities or projects may be disrupted by civil unrest, acts of sabotage or terrorism, cybersecurity attacks, and other local security concerns. Such concerns may require us to incur greater costs for security or to shut down operations for a period of time.

Climate change and greenhouse gas restrictions. Due to concern over the risks of climate change, a number of countries have adopted, or are considering the adoption of, regulatory frameworks to reduce greenhouse gas emissions. These include adoption of cap and trade regimes, carbon taxes, restrictive permitting, increased efficiency standards, and incentives or mandates for renewable energy. These requirements could make our products more expensive, lengthen project implementation times, and reduce demand for hydrocarbons, as well as shift hydrocarbon demand toward relatively lower-carbon sources such as natural gas. Current and pending greenhouse gas regulations or policies may also increase our compliance costs, such as for monitoring or sequestering emissions.

Government sponsorship of alternative energy. Many governments are providing tax advantages and other subsidies to support alternative energy sources or are mandating the use of specific fuels or technologies. Governments and others are also promoting research into new technologies to reduce the cost and increase the scalability of alternative energy sources. We are conducting our own research both in-house and by working with more than 80 leading universities around the world, including the Massachusetts Institute of Technology, Princeton University, the University of Texas, and Stanford University. Our research projects focus on developing algae-based biofuels, carbon capture and storage, breakthrough energy efficiency processes, advanced energy-saving materials, and other technologies. For example, ExxonMobil is working with Fuel Cell Energy Inc. to explore using carbonate fuel cells to economically capture CO₂ emissions from gas-fired power plants. Our future results may depend in part on the success of our research efforts and on our ability to adapt and apply the strengths of our current business model to providing the energy products of the future in a cost-competitive manner. See “Operational and Other Factors” below.

Operational and Other Factors

In addition to external economic and political factors, our future business results also depend on our ability to manage successfully those factors that are at least in part within our control. The extent to which we manage these factors will impact our performance relative to competition. For projects in which we are not the operator, we depend on the management effectiveness of one or more co-venturers whom we do not control.

Exploration and development program. Our ability to maintain and grow our oil and gas production depends on the success of our exploration and development efforts. Among other factors, we must continuously improve our ability to identify the most promising resource prospects and apply our project management expertise to bring discovered resources on line as scheduled and within budget.

Project and portfolio management. The long-term success of ExxonMobil’s Upstream, Downstream, and Chemical businesses depends on complex, long‑term, capital intensive projects. These projects in turn require a high degree of project management expertise to maximize efficiency. Specific factors that can affect the performance of major projects include our ability to: negotiate successfully with joint venturers, partners, governments, suppliers, customers, or others; model and optimize reservoir performance; develop markets for project outputs, whether through long-term contracts or the development of effective spot markets; manage changes in operating conditions and costs, including costs of third party equipment or services such as drilling rigs and shipping; prevent, to the extent possible, and respond effectively to unforeseen technical difficulties that could delay project startup or cause unscheduled project downtime; and influence the performance of project operators where ExxonMobil does not perform that role. In addition to the effective management of individual projects, ExxonMobil’s success, including our ability to mitigate risk and

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provide attractive returns to shareholders, depends on our ability to successfully manage our overall portfolio, including diversification among types and locations of our projects.

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.

Operational efficiency. An important component of ExxonMobil’s competitive performance, especially given the commodity‑based nature of many of our businesses, is our ability to operate efficiently, including our ability to manage expenses and improve production yields on an ongoing basis. This requires continuous management focus, including technology improvements, cost control, productivity enhancements, regular reappraisal of our asset portfolio, and the recruitment, development, and retention of high caliber employees.

Research and development. To maintain our competitive position, especially in light of the technological nature of our businesses and the need for continuous efficiency improvement, ExxonMobil’s research and development organizations must be successful and able to adapt to a changing market and policy environment, including developing technologies to help reduce greenhouse gas emissions.

Safety, business controls, and environmental risk management. Our results depend on management’s ability to minimize the inherent risks of oil, gas, and petrochemical operations, to control effectively our business activities, and to minimize the potential for human error. We apply rigorous management systems and continuous focus to workplace safety and to avoiding spills or other adverse environmental events. For example, we work to minimize spills through a combined program of effective operations integrity management, ongoing upgrades, key equipment replacements, and comprehensive inspection and surveillance. Similarly, we are implementing cost-effective new technologies and adopting new operating practices to reduce air emissions, not only in response to government requirements but also to address community priorities. We also maintain a disciplined framework of internal controls and apply a controls management system for monitoring compliance with this framework. Substantial liabilities and other adverse impacts could result if our management systems and controls do not function as intended.

Cybersecurity. ExxonMobil is regularly subject to attempted cybersecurity disruptions from a variety of threat actors. If our systems for protecting against cybersecurity disruptions prove to be insufficient, ExxonMobil as well as our customers, employees, or third parties could be adversely affected. Such cybersecurity disruptions could cause physical harm to people or the environment; damage or destroy assets; compromise business systems; result in proprietary information being altered, lost, or stolen; result in employee, customer, or third-party information being compromised; or otherwise disrupt our business operations. We could incur significant costs to remedy the effects of such a cybersecurity disruption as well as in connection with resulting regulatory actions and litigation.

Preparedness. Our operations may be disrupted by severe weather events, natural disasters, human error, and similar events. For example, hurricanes may damage our offshore production facilities or coastal refining and petrochemical plants in vulnerable areas. Our facilities are designed, constructed, and operated to withstand a variety of extreme climatic and other conditions, with safety factors built in to cover a number of engineering uncertainties, including those associated with wave, wind, and current intensity, marine ice flow patterns, permafrost stability, storm surge magnitude, temperature extremes, extreme rain fall events, and earthquakes. Our consideration of changing weather conditions and inclusion of safety factors in design covers the engineering uncertainties that climate change and other events may potentially introduce. Our ability to mitigate the adverse impacts of these events depends in part upon the effectiveness of our robust facility engineering as well as our rigorous disaster preparedness and response and business continuity planning.

Insurance limitations. The ability of the Corporation to insure against many of the risks it faces as described in this Item 1A is limited by the capacity of the applicable insurance markets, which may not be sufficient.

Competition. As noted in Item 1 above, the energy and petrochemical industries are highly competitive. We face competition not only from other private firms, but also from state-owned companies that are increasingly competing for opportunities outside of their home countries. In some cases, these state-owned companies may pursue opportunities in furtherance of strategic objectives of their government owners, with less focus on financial returns than companies owned by private shareholders, such as ExxonMobil. Technology and expertise provided by industry service companies may also enhance the competitiveness of firms that may not have the internal resources and capabilities of ExxonMobil.

Reputation. Our reputation is an important corporate asset. An operating incident, significant cybersecurity disruption, or other adverse event such as those described in this Item 1A may have a negative impact on our reputation, which in turn could make it more difficult for us to compete successfully for new opportunities, obtain necessary regulatory approvals, or could reduce consumer demand for our branded products.

Projections, estimates, and descriptions of ExxonMobil’s plans and objectives included or incorporated in Items 1, 1A, 2, 7 and 7A of this report are forward-looking statements. Actual future results, including project completion dates, production rates, capital expenditures, costs, and business plans could differ materially due to, among other things, the factors discussed above and elsewhere in this report.

ITEM 1B.UNRESOLVED STAFF COMMENTS

None.

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Item 2.       Properties

Information with regard to oil and gas producing activities follows:

1. Disclosure of Reserves

A. Summary of Oil and Gas Reserves at Year-End 2017

The table below summarizes the oil-equivalent proved reserves in each geographic area and by product type for consolidated subsidiaries and equity companies. Gas is converted to an oil-equivalent basis at six million cubic feet per one thousand barrels. The Corporation has reported proved reserves on the basis of the average of the first-day-of-the-month price for each month during the last 12-month period. No major discovery or other favorable or adverse event has occurred since December 31, 2017, that would cause a significant change in the estimated proved reserves as of that date.

					Crude	Natural Gas		Synthetic	Natural	Oil-Equivalent
					Oil	Liquids	Bitumen	Oil	Gas	Basis
					(million bbls)	(million bbls)	(million bbls)	(million bbls)	(billion cubic ft)	(million bbls)
Proved Reserves
	Developed
		Consolidated Subsidiaries
			United States		1,137	352	-	-	12,649	3,597
			Canada/Other Americas (1)		85	7	657	473	512	1,307
			Europe		93	26	-	-	1,231	325
			Africa		593	83	-	-	584	773
			Asia		2,070	112	-	-	4,030	2,854
			Australia/Oceania		85	46	-	-	4,420	868
				Total Consolidated	4,063	626	657	473	23,426	9,724
		Equity Companies
			United States		201	7	-	-	154	234
			Europe		14	-	-	-	4,899	830
			Africa		-	-	-	-	-	-
			Asia		715	304	-	-	12,898	3,168
				Total Equity Company	930	311	-	-	17,951	4,232
				Total Developed	4,993	937	657	473	41,377	13,956
	Undeveloped
		Consolidated Subsidiaries
			United States		1,558	609	-	-	6,384	3,231
			Canada/Other Americas (1)		325	12	355	-	860	835
			Europe		26	4	-	-	137	53
			Africa		136	1	-	-	11	139
			Asia		1,426	-	-	-	310	1,478
			Australia/Oceania		25	6	-	-	2,474	443
				Total Consolidated	3,496	632	355	-	10,176	6,179
		Equity Companies
			United States		44	4	-	-	69	60
			Europe		1	-	-	-	1,265	212
			Africa		6	-	-	-	914	158
			Asia		382	49	-	-	1,350	656
				Total Equity Company	433	53	-	-	3,598	1,086
				Total Undeveloped	3,929	685	355	-	13,774	7,265
Total Proved Reserves					8,922	1,622	1,012	473	55,151	21,221

(1)   Other Americas includes proved developed reserves of 2 million barrels of crude oil and 42 billion cubic feet of natural gas, as well as proved undeveloped reserves of 150 million barrels of crude oil and 175 billion cubic feet of natural gas.

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In the preceding reserves information, consolidated subsidiary and equity company reserves are reported separately. However, the Corporation operates its business with the same view of equity company reserves as it has for reserves from consolidated subsidiaries.

The Corporation anticipates several projects will come online over the next few years providing additional production capacity. However, actual volumes will vary from year to year due to the timing of individual project start-ups; operational outages; reservoir performance; performance of enhanced oil recovery projects; regulatory changes; the impact of fiscal and commercial terms; asset sales; weather events; price effects on production sharing contracts; changes in the amount and timing of capital investments that may vary depending on the oil and gas price environment; and other factors described in Item 1A. Risk Factors.

The estimation of proved reserves, which is based on the requirement of reasonable certainty, is an ongoing process based on rigorous technical evaluations, commercial and market assessments and detailed analysis of well and reservoir information such as flow rates and reservoir pressures. Furthermore, the Corporation only records proved reserves for projects which have received significant funding commitments by management made toward the development of the reserves. Although the Corporation is reasonably certain that proved reserves will be produced, the timing and amount recovered can be affected by a number of factors including completion of development projects, reservoir performance, regulatory approvals, government policies, consumer preferences, and significant changes in long-term oil and natural gas price levels. In addition, proved reserves could be affected by an extended period of low prices which could reduce the level of the Corporation’s capital spending and also impact our partners’ capacity to fund their share of joint projects.

B. Technologies Used in Establishing Proved Reserves Additions in 2017

Additions to ExxonMobil’s proved reserves in 2017 were based on estimates generated through the integration of available and appropriate geological, engineering and production data, utilizing well-established technologies that have been demonstrated in the field to yield repeatable and consistent results.

Data used in these integrated assessments included information obtained directly from the subsurface via wellbores, such as well logs, reservoir core samples, fluid samples, static and dynamic pressure information, production test data, and surveillance and performance information. The data utilized also included subsurface information obtained through indirect measurements including high-quality 3-D and 4-D seismic data, calibrated with available well control information. The tools used to interpret the data included proprietary seismic processing software, proprietary reservoir modeling and simulation software, and commercially available data analysis packages.

In some circumstances, where appropriate analog reservoirs were available, reservoir parameters from these analogs were used to increase the quality of and confidence in the reserves estimates.

C. Qualifications of Reserves Technical Oversight Group and Internal Controls over Proved Reserves

ExxonMobil has a dedicated Global Reserves group that provides technical oversight and is separate from the operating organization. Primary responsibilities of this group include oversight of the reserves estimation process for compliance with Securities and Exchange Commission (SEC) rules and regulations, review of annual changes in reserves estimates, and the reporting of ExxonMobil’s proved reserves. This group also maintains the official company reserves estimates for ExxonMobil’s proved reserves of crude oil, natural gas liquids, bitumen, synthetic oil, and natural gas. In addition, the group provides training to personnel involved in the reserves estimation and reporting process within ExxonMobil and its affiliates. The Manager of the Global Reserves group has more than 25 years of experience in reservoir engineering and reserves assessment and has a degree in Engineering. He is an active member of the Society of Petroleum Engineers (SPE). The group is staffed with individuals that have an average of more than 20 years of technical experience in the petroleum industry, including expertise in the classification and categorization of reserves under the SEC guidelines. This group includes individuals who hold advanced degrees in either Engineering or Geology, and a member currently serves on the SPE Oil and Gas Reserves Committee.

The Global Reserves group maintains a central database containing the official company reserves estimates. Appropriate controls, including limitations on database access and update capabilities, are in place to ensure data integrity within this central database. An annual review of the system’s controls is performed by internal audit. Key components of the reserves estimation process include technical evaluations and analysis of well and field performance and a rigorous peer review. No changes may be made to the reserves estimates in the central database, including additions of any new initial reserves estimates or subsequent revisions, unless these changes have been thoroughly reviewed and evaluated by duly authorized personnel within the operating organization. In addition, changes to reserves estimates that exceed certain thresholds require further review and approval of the appropriate level of management within the operating organization before the changes may be made in the central database. Endorsement by the Global Reserves group for all proved reserves changes is a mandatory component of this review process. After all changes are made, reviews are held with senior management for final endorsement.

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2. Proved Undeveloped Reserves

At year-end 2017, approximately 7.3 billion oil-equivalent barrels (GOEB) of ExxonMobil’s proved reserves were classified as proved undeveloped. This represents 34 percent of the 21.2 GOEB reported in proved reserves. This compares to the 6.2 GOEB of proved undeveloped reserves reported at the end of 2016. During the year, ExxonMobil conducted development activities that resulted in the transfer of approximately 0.7 GOEB from proved undeveloped to proved developed reserves by year‑end. The largest transfers were related to the start-up of the Gorgon field and Longford Gas Conditioning Plant in Australia and drilling activity in the United States, the United Arab Emirates, and Kazakhstan. During 2017, extensions and discoveries, primarily in the United Arab Emirates, the United States, and Guyana resulted in an addition of approximately 0.9 GOEB of proved undeveloped reserves. Also, purchases, primarily in the United States and Mozambique resulted in the addition of approximately 0.9 GOEB of proved undeveloped reserves.

Overall, investments of $8 billion were made by the Corporation during 2017 to progress the development of reported proved undeveloped reserves, including $8 billion for oil and gas producing activities and in addition, nearly $100 million for other non-oil and gas producing activities such as the construction of support infrastructure and other related facilities. These investments represented 48 percent of the $16.7 billion in total reported Upstream capital and exploration expenditures. Investments made by the Corporation to develop quantities which no longer meet the SEC definition of proved reserves due to 2017 average prices are included in the $16.7 billion of Upstream capital expenditures reported above but are excluded from amounts related to progressing the development of proved undeveloped reserves.

One of ExxonMobil’s requirements for reporting proved reserves is that management has made significant funding commitments toward the development of the reserves. ExxonMobil has a disciplined investment strategy and many major fields require long lead‑time in order to be developed. Development projects typically take several years from the time of recording proved undeveloped reserves to the start of production and can exceed five years for large and complex projects. Proved undeveloped reserves in Canada, Kazakhstan, Australia, the Netherlands, the United States, and Qatar have remained undeveloped for five years or more primarily due to constraints on the capacity of infrastructure, as well as the time required to complete development for very large projects. The Corporation is reasonably certain that these proved reserves will be produced; however, the timing and amount recovered can be affected by a number of factors including completion of development projects, reservoir performance, regulatory approvals, government policies, consumer preferences, the pace of co‑venturer/government funding, and significant changes in long-term oil and natural gas price levels. Of the proved undeveloped reserves that have been reported for five or more years, over 80 percent are contained in the aforementioned countries. In Canada, proved undeveloped reserves are related to drilling activities in the offshore Hebron field and onshore Cold Lake operations. In Kazakhstan, the proved undeveloped reserves are related to the remainder of the initial development of the producing offshore Kashagan field which is included in the North Caspian Production Sharing Agreement and the Tengizchevroil joint venture which includes a production license in the Tengiz – Korolev field complex. The Tengizchevroil joint venture is producing, and proved undeveloped reserves will continue to move to proved developed as approved development phases progress. In Australia, proved undeveloped reserves are associated with future compression for the Gorgon Jansz LNG project. In the Netherlands, the Groningen gas field has proved undeveloped reserves related to installation of future compression.

7

3. Oil and Gas Production, Production Prices and Production Costs

A. Oil and Gas Production

The table below summarizes production by final product sold and by geographic area for the last three years.

				2017		2016		2015
				(thousands of barrels daily)
Crude oil and natural gas liquids production				Crude Oil	NGL	Crude Oil	NGL	Crude Oil	NGL
	Consolidated Subsidiaries
		United States		361	96	347	87	326	86
		Canada/Other Americas		44	6	53	6	47	8
		Europe		147	31	171	31	173	28
		Africa		412	11	459	15	511	18
		Asia		373	26	383	27	346	29
		Australia/Oceania		35	19	37	19	33	17
			Total Consolidated Subsidiaries	1,372	189	1,450	185	1,436	186
	Equity Companies
		United States		55	2	58	2	61	3
		Europe		4	-	2	-	3	-
		Asia		235	64	232	65	241	68
			Total Equity Companies	294	66	292	67	305	71
Total crude oil and natural gas liquids production				1,666	255	1,742	252	1,741	257
Bitumen production
	Consolidated Subsidiaries
		Canada/Other Americas		305		304		289
Synthetic oil production
	Consolidated Subsidiaries
		Canada/Other Americas		57		67		58
Total liquids production				2,283		2,365		2,345
				(millions of cubic feet daily)
Natural gas production available for sale
	Consolidated Subsidiaries
		United States		2,910		3,052		3,116
		Canada/Other Americas (1)		218		239		261
		Europe		1,046		1,093		1,110
		Africa		5		7		5
		Asia		906		927		1,080
		Australia/Oceania		1,310		887		677
			Total Consolidated Subsidiaries	6,395		6,205		6,249
	Equity Companies
		United States		26		26		31
		Europe		902		1,080		1,176
		Asia		2,888		2,816		3,059
			Total Equity Companies	3,816		3,922		4,266
Total natural gas production available for sale				10,211		10,127		10,515
				(thousands of oil-equivalent barrels daily)
Oil-equivalent production				3,985		4,053		4,097

(1)   Other Americas includes natural gas production available for sale for 2017, 2016 and 2015 of 24 million, 22 million, and 21 million cubic feet daily, respectively.

8

B. Production Prices and Production Costs

The table below summarizes average production prices and average production costs by geographic area and by product type for the last three years.

					Canada/
				United	Other					Australia/
				States	Americas		Europe	Africa	Asia	Oceania		Total
During 2017				(dollars per unit)
	Consolidated Subsidiaries
		Average production prices
			Crude oil, per barrel	46.71		52.42	52.02	54.70	53.26		53.61	51.88
			NGL, per barrel	24.20		27.07	30.96	37.38	22.69		33.15	26.88
			Natural gas, per thousand cubic feet	2.03		2.03	5.48	1.51	2.05		4.22	3.04
			Bitumen, per barrel	-		29.70	-	-	-		-	29.70
			Synthetic oil, per barrel	-		52.72	-	-	-		-	52.72
		Average production costs, per oil-equivalent barrel - total		10.85		23.44	12.25	13.33	8.07		6.30	12.33
		Average production costs, per barrel - bitumen		-		21.39	-	-	-		-	21.39
		Average production costs, per barrel - synthetic oil		-		44.21	-	-	-		-	44.21
	Equity Companies
		Average production prices
			Crude oil, per barrel	49.13		-	47.69	-	50.27		-	50.02
			NGL, per barrel	21.78		-	-	-	38.23		-	37.81
			Natural gas, per thousand cubic feet	2.42		-	4.81	-	4.15		-	4.30
		Average production costs, per oil-equivalent barrel - total		23.38		-	7.45	-	1.18		-	3.51
	Total
		Average production prices
			Crude oil, per barrel	47.03		52.42	51.91	54.70	52.12		53.61	51.56
			NGL, per barrel	24.16		27.07	30.96	37.38	33.79		33.15	29.70
			Natural gas, per thousand cubic feet	2.03		2.03	5.17	1.51	3.65		4.22	3.51
			Bitumen, per barrel	-		29.70	-	-	-		-	29.70
			Synthetic oil, per barrel	-		52.72	-	-	-		-	52.72
		Average production costs, per oil-equivalent barrel - total		11.61		23.44	10.79	13.33	4.02		6.30	10.12
		Average production costs, per barrel - bitumen		-		21.39	-	-	-		-	21.39
		Average production costs, per barrel - synthetic oil		-		44.21	-	-	-		-	44.21
During 2016
	Consolidated Subsidiaries
		Average production prices
			Crude oil, per barrel	36.47		39.50	40.57	42.59	41.89		43.33	40.59
			NGL, per barrel	16.16		18.91	22.17	26.78	17.12		23.95	18.99
			Natural gas, per thousand cubic feet	1.43		1.71	4.26	1.14	1.56		3.46	2.25
			Bitumen, per barrel	-		19.30	-	-	-		-	19.30
			Synthetic oil, per barrel	-		43.03	-	-	-		-	43.03
		Average production costs, per oil-equivalent barrel - total		10.41		21.16	12.78	12.75	6.44		7.12	11.79
		Average production costs, per barrel - bitumen		-		18.25	-	-	-		-	18.25
		Average production costs, per barrel - synthetic oil		-		33.64	-	-	-		-	33.64
	Equity Companies
		Average production prices
			Crude oil, per barrel	38.44		-	36.13	-	39.69		-	39.41
			NGL, per barrel	14.85		-	-	-	25.21		-	24.87
			Natural gas, per thousand cubic feet	2.03		-	4.19	-	3.59		-	3.75
		Average production costs, per oil-equivalent barrel - total		22.26		-	7.92	-	1.80		-	4.21
	Total
		Average production prices
			Crude oil, per barrel	36.75		39.50	40.51	42.59	41.06		43.33	40.39
			NGL, per barrel	16.13		18.91	22.17	26.78	22.85		23.95	20.56
			Natural gas, per thousand cubic feet	1.44		1.71	4.22	1.14	3.09		3.46	2.83
			Bitumen, per barrel	-		19.30	-	-	-		-	19.30
			Synthetic oil, per barrel	-		43.03	-	-	-		-	43.03
		Average production costs, per oil-equivalent barrel - total		11.18		21.16	11.21	12.75	3.77		7.12	9.89
		Average production costs, per barrel - bitumen		-		18.25	-	-	-		-	18.25
		Average production costs, per barrel - synthetic oil		-		33.64	-	-	-		-	33.64

9

						Canada/
				United	Other					Australia/
				States	Americas		Europe	Africa	Asia		Oceania	Total
During 2015				(dollars per unit)
	Consolidated Subsidiaries
		Average production prices
			Crude oil, per barrel	41.87		44.30	49.04	51.01	48.30		49.56	47.75
			NGL, per barrel	16.96		21.91	27.50	33.41	21.14		29.75	22.16
			Natural gas, per thousand cubic feet	1.65		1.78	6.47	1.57	2.02		5.13	2.95
			Bitumen, per barrel	-		25.07	-	-	-		-	25.07
			Synthetic oil, per barrel	-		48.15	-	-	-		-	48.15
		Average production costs, per oil-equivalent barrel - total		12.50		22.68	15.86	10.31	7.71		8.86	12.97
		Average production costs, per barrel - bitumen		-		19.20	-	-	-		-	19.20
		Average production costs, per barrel - synthetic oil		-		41.83	-	-	-		-	41.83
	Equity Companies
		Average production prices
			Crude oil, per barrel	46.34		-	46.05	-	48.44		-	47.99
			NGL, per barrel	15.37		-	-	-	32.36		-	31.75
			Natural gas, per thousand cubic feet	2.05		-	6.27	-	5.83		-	5.92
		Average production costs, per oil-equivalent barrel - total		22.15		-	7.75	-	1.41		-	3.89
	Total
		Average production prices
			Crude oil, per barrel	42.58		44.30	48.97	51.01	48.36		49.56	47.79
			NGL, per barrel	16.92		21.91	27.50	33.41	28.94		29.75	24.77
			Natural gas, per thousand cubic feet	1.65		1.78	6.37	1.57	4.84		5.13	4.16
			Bitumen, per barrel	-		25.07	-	-	-		-	25.07
			Synthetic oil, per barrel	-		48.15	-	-	-		-	48.15
		Average production costs, per oil-equivalent barrel - total		13.16		22.68	13.09	10.31	3.96		8.86	10.56
		Average production costs, per barrel - bitumen		-		19.20	-	-	-		-	19.20
		Average production costs, per barrel - synthetic oil		-		41.83	-	-	-		-	41.83

Average production prices have been calculated by using sales quantities from the Corporation’s own production as the divisor. Average production costs have been computed by using net production quantities for the divisor. The volumes of crude oil and natural gas liquids (NGL) production used for this computation are shown in the oil and gas production table in section 3.A. The volumes of natural gas used in the calculation are the production volumes of natural gas available for sale and are also shown in section 3.A. The natural gas available for sale volumes are different from those shown in the reserves table in the “Oil and Gas Reserves” part of the “Supplemental Information on Oil and Gas Exploration and Production Activities” portion of the Financial Section of this report due to volumes consumed or flared. Gas is converted to an oil-equivalent basis at six million cubic feet per one thousand barrels.

10

4. Drilling and Other Exploratory and Development Activities

A. Number of Net Productive and Dry Wells Drilled

				2017	2016	2015
Net Productive Exploratory Wells Drilled
	Consolidated Subsidiaries
		United States		-	-	-
		Canada/Other Americas		5	2	1
		Europe		-	1	1
		Africa		1	1	1
		Asia		-	-	2
		Australia/Oceania		-	-	1
			Total Consolidated Subsidiaries	6	4	6
	Equity Companies
		United States		-	-	-
		Europe		-	1	1
		Africa		-	-	-
		Asia		-	-	-
			Total Equity Companies	-	1	1
Total productive exploratory wells drilled				6	5	7
Net Dry Exploratory Wells Drilled
	Consolidated Subsidiaries
		United States		-	-	1
		Canada/Other Americas		-	1	-
		Europe		-	-	2
		Africa		2	1	-
		Asia		-	-	-
		Australia/Oceania		-	-	-
			Total Consolidated Subsidiaries	2	2	3
	Equity Companies
		United States		-	-	1
		Europe		-	-	1
		Africa		-	-	-
		Asia		1	-	-
			Total Equity Companies	1	-	2
Total dry exploratory wells drilled				3	2	5

11

				2017	2016	2015
Net Productive Development Wells Drilled
	Consolidated Subsidiaries
		United States		300	335	692
		Canada/Other Americas		12	13	53
		Europe		6	9	10
		Africa		6	7	23
		Asia		15	13	14
		Australia/Oceania		1	-	4
			Total Consolidated Subsidiaries	340	377	796
	Equity Companies
		United States		154	121	390
		Europe		1	2	1
		Africa		-	-	-
		Asia		3	3	2
			Total Equity Companies	158	126	393
Total productive development wells drilled				498	503	1,189
Net Dry Development Wells Drilled
	Consolidated Subsidiaries
		United States		4	2	5
		Canada/Other Americas		-	-	-
		Europe		1	2	3
		Africa		-	-	1
		Asia		-	-	-
		Australia/Oceania		-	-	-
			Total Consolidated Subsidiaries	5	4	9
	Equity Companies
		United States		-	-	-
		Europe		-	-	-
		Africa		-	-	-
		Asia		-	-	-
			Total Equity Companies	-	-	-
Total dry development wells drilled				5	4	9
	Total number of net wells drilled			512	514	1,210

12

B. Exploratory and Development Activities Regarding Oil and Gas Resources Extracted by Mining Technologies

Syncrude Operations. Syncrude is a joint venture established to recover shallow deposits of oil sands using open-pit mining methods to extract the crude bitumen, and then upgrade it to produce a high-quality, light (32 degrees API), sweet, synthetic crude oil. Imperial Oil Limited is the owner of a 25 percent interest in the joint venture. Exxon Mobil Corporation has a 69.6 percent interest in Imperial Oil Limited. In 2017, the company’s share of net production of synthetic crude oil was about 57 thousand barrels per day and share of net acreage was about 63 thousand acres in the Athabasca oil sands deposit.

Kearl Operations. Kearl is a joint venture established to recover shallow deposits of oil sands using open-pit mining methods to extract the crude bitumen. Imperial Oil Limited holds a 70.96 percent interest in the joint venture and ExxonMobil Canada Properties holds the other 29.04 percent. Exxon Mobil Corporation has a 69.6 percent interest in Imperial Oil Limited and a 100 percent interest in ExxonMobil Canada Properties. Kearl is comprised of six oil sands leases covering about 49 thousand acres in the Athabasca oil sands deposit.

Kearl is located approximately 40 miles north of Fort McMurray, Alberta, Canada. Bitumen is extracted from oil sands produced from open-pit mining operations, and processed through bitumen extraction and froth treatment trains. The product, a blend of bitumen and diluent, is shipped to our refineries and to other third parties. Diluent is natural gas condensate or other light hydrocarbons added to the crude bitumen to facilitate transportation by pipeline and rail. During 2017, average net production at Kearl was about 174 thousand barrels per day.

5. Present Activities

A. Wells Drilling

				Year-End 2017		Year-End 2016
				Gross	Net	Gross	Net
Wells Drilling
	Consolidated Subsidiaries
		United States		820	334	760	302
		Canada/Other Americas		30	22	22	17
		Europe		12	2	12	3
		Africa		10	2	30	7
		Asia		58	15	38	11
		Australia/Oceania		3	1	4	1
			Total Consolidated Subsidiaries	933	376	866	341
	Equity Companies
		United States		10	1	22	3
		Europe		8	3	9	4
		Asia		14	4	7	2
			Total Equity Companies	32	8	38	9
Total gross and net wells drilling				965	384	904	350

B. Review of Principal Ongoing Activities

UNITED STATES

ExxonMobil’s year-end 2017 acreage holdings totaled 12.8 million net acres, of which 0.9 million net acres were offshore. ExxonMobil was active in areas onshore and offshore in the lower 48 states and in Alaska.

During the year, 444.9 net development wells were completed in the inland lower 48 states. Development activities focused on liquids-rich opportunities in the onshore U.S., primarily in the Permian Basin of West Texas and New Mexico and the Bakken oil play in North Dakota. In addition, gas development activities continued in the Marcellus Shale of Pennsylvania and West Virginia, the Utica Shale of Ohioand the Haynesville Shale of East Texas and Louisiana. In 2017, ExxonMobil acquired a number of oil and gas properties in the Permian Basin.

ExxonMobil’s net acreage in the Gulf of Mexico at year-end 2017 was 0.8 million acres. A total of 2.3net development wells were completed during the year.

Participation in Alaska production and development continued with a total of 10.9 net development wells completed.

13

CANADA / OTHER AMERICAS

Canada

Oil and Gas Operations:ExxonMobil’s year-end 2017 acreage holdings totaled 6.5 million net acres, of which 3.2 million net acres were offshore. A total of 10.8 net development wells were completed during the year. The Hebron project started up in 2017.

In Situ Bitumen Operations:ExxonMobil’s year-end 2017 in situ bitumen acreage holdings totaled 0.7 million net onshore acres.

Argentina

ExxonMobil’s net acreage totaled 0.3 million onshore acres at year-end 2017, and there were 4.0 net exploration and development wells completed during the year.

Guyana

ExxonMobil’s net acreage totaled 5.2 million offshore acres at year-end 2017, and there were 2.3 net exploration wells completed during the year. The Liza Phase 1 project was funded in 2017.

EUROPE

Germany

A total of 2.8 million net onshore acres were held by ExxonMobil at year-end 2017, with 1.3 net development wells completed during the year.

Netherlands

ExxonMobil’s net interest in licenses totaled approximately 1.5 million acres at year-end 2017, of which 1.1 million acres were onshore. A total of 1.3 net exploration and development wells were completed during the year.

Norway

ExxonMobil’s net interest in licenses at year-end 2017 totaled approximately 0.1 million acres, all offshore. A total of 3.9 net development wells were completed during the year. In 2017, ExxonMobil divested approximately 81 thousand net operated acres in Norway.

United Kingdom

ExxonMobil’s net interest in licenses at year-end 2017 totaled approximately 0.6 million acres, all offshore. A total of 1.2 net exploration and development wells were completed during the year.The Penguins Redevelopment project was funded in 2017.

AFRICA

Angola

ExxonMobil’s net acreage totaled 0.2 million offshore acres at year-end 2017, with 5.9 net development wells completed during the year. On Block 32, development activities continued on the Kaombo Split Hub project.

Chad

ExxonMobil’s net year-end 2017 acreage holdings consisted of 46 thousand onshore acres.

Equatorial Guinea

ExxonMobil’s acreage totaled 0.3 million net offshore acres at year-end 2017, with 2.4 net exploration wells completed during the year.

Mozambique

ExxonMobil’s net acreage totaled approximately 0.1 million offshore acres at year-end 2017. ExxonMobil acquired an interest in Area 4 offshore Mozambique in December 2017. The Coral South Floating LNG project was funded in 2017.

Nigeria

ExxonMobil’s net acreage totaled 1.1 million offshore acres at year-end 2017, with 0.8 net development wells completed during the year.

14

ASIA

Azerbaijan

At year-end 2017, ExxonMobil’s net acreage totaled 9 thousand offshore acres. A total of 1.3 net development wells were completed during the year.

Indonesia

At year-end 2017, ExxonMobil had 0.1 million net acres onshore. In 2017, ExxonMobil relinquished approximately 0.4 million net acres offshore.

Iraq

At year-end 2017, ExxonMobil’s onshore acreage was 0.1 million net acres. A total of 4.5 net development wells were completed at the West Qurna Phase I oil field during the year. Oil field rehabilitation activities continued during 2017 andacross the life of this project will include drilling of new wells, working over of existing wells, and optimization and debottlenecking of existing facilities. In the Kurdistan Region of Iraq, ExxonMobil continued exploration activities.

Kazakhstan

ExxonMobil’s net acreage totaled 0.1 million acres onshore and 0.2 million acres offshore at year-end 2017. A total of 4.3 net development wells were completed during 2017. Development activities continued on the Tengiz Expansion project.

Malaysia

ExxonMobil’s interests in production sharing contracts covered 2.5 million net acres offshore at year-end 2017. During the year, a total of 1.5 net development wells were completed. ExxonMobil acquired deepwater acreage offshore Sabah.

Qatar

Through our joint ventures with Qatar Petroleum, ExxonMobil’s net acreage totaled 65 thousand acres offshore at year-end 2017. ExxonMobil participated in 62.2 million tonnes per year gross liquefied natural gas capacity and 2.0 billion cubic feet per day of flowing gas capacity at year end. Development activities continued on the Barzan project in 2017.

Republic of Yemen

ExxonMobil’s net acreage in the Republic of Yemen production sharing areas totaled 10 thousand acres onshore at year-end 2017.

Russia

ExxonMobil’s net acreage holdings in Sakhalin at year-end 2017 were 85 thousand acres, all offshore. A total of 2.1 net exploration and development wells were completed. The Odoptu Stage 2 project started up in 2017.

At year-end 2017, ExxonMobil’s net acreage in the Rosneft joint venture agreements for the Kara, Laptev, Chukchi and Black Seas was 63.6 million acres, all offshore. ExxonMobil and Rosneft formed a joint venture to evaluate the development of tight-oil reserves in western Siberia in 2013. Refer to the relevant portion of “Note 7: Equity Company Information” of the Financial Section of this report for additional information on the Corporation’s participation in Rosneft joint venture activities.

Thailand

ExxonMobil’s net onshore acreage in Thailand concessions totaled 21 thousand acres at year-end 2017.

United Arab Emirates

ExxonMobil’s net acreage in the Abu Dhabi offshore Upper Zakum oil concession was 81 thousand acres at year-end 2017. A total of 5.3 net development wells were completed. During 2017, development activities continued on the Upper Zakum 750 project, and agreements were signed for the Upper Zakum 1MBD (million barrels per day) project, including a 10-year extension to 2051 for the Upper Zakum concession.

15

AUSTRALIA / OCEANIA

Australia

ExxonMobil’s year-end 2017 acreage holdings totaled 2.0 million net offshore acres. The Gas Conditioning Plant at Longford started up in 2017.

The third train of the co-venturer-operated Gorgon Jansz liquefied natural gas (LNG) project started up in 2017. The project consists of a subsea infrastructure for offshore production and transportation of the gas, a 15.6 million tonnes per year LNG facility and a 280 million cubic feet per day domestic gas plant located on Barrow Island, Western Australia.

Papua New Guinea

A total of 10.1 million net acres were held by ExxonMobil at year-end 2017, of which 5.4 million net acres were offshore. A total of 0.7 net exploration and development wells were completed during the year. The Papua New Guinea (PNG) LNG integrated development includes gas production and processing facilities in the southern PNG Highlands, onshore and offshore pipelines, and a 6.9 million tonnes per year LNG facility near Port Moresby. In 2017, ExxonMobil acquired InterOil Corporation (IOC), an exploration and production business focused on Papua New Guinea.

WORLDWIDE EXPLORATION

At year-end 2017, exploration activities were under way in several areas in which ExxonMobil has no established production operations and thus are not included above. A total of 30.1 million net acres were held at year-end 2017 in these countries.

6. Delivery Commitments

ExxonMobil sells crude oil and natural gas from its producing operations under a variety of contractual obligations, some of which may specify the delivery of a fixed and determinable quantity for periods longer than one year. ExxonMobil also enters into natural gas sales contracts where the source of the natural gas used to fulfill the contract can be a combination of our own production and the spot market. Worldwide, we are contractually committed to deliver approximately 57 million barrels of oil and 2,400 billion cubic feet of natural gas for the period from 2018 through 2020. We expect to fulfill the majority of these delivery commitments with production from our proved developed reserves. Any remaining commitments will be fulfilled with production from our proved undeveloped reserves and spot market purchases as necessary.

16

7. Oil and Gas Properties, Wells, Operations and Acreage

A. Gross and Net Productive Wells

				Year-End 2017				Year-End 2016
				Oil		Gas		Oil		Gas
				Gross	Net	Gross	Net	Gross	Net	Gross	Net
Gross and Net Productive Wells
	Consolidated Subsidiaries
		United States		20,679	8,366	27,700	15,979	20,470	8,037	32,949	19,873
		Canada/Other Americas		4,877	4,618	4,273	1,646	5,024	4,767	4,362	1,668
		Europe		1,016	267	664	268	1,130	323	641	253
		Africa		1,222	474	15	6	1,268	494	17	7
		Asia		900	299	139	82	882	299	140	82
		Australia/Oceania		588	129	73	30	588	128	53	23
			Total Consolidated Subsidiaries	29,282	14,153	32,864	18,011	29,362	14,048	38,162	21,906
	Equity Companies
		United States		13,796	5,247	4,227	491	13,957	5,315	4,257	491
		Europe		59	21	617	195	56	19	586	186
		Asia		144	36	125	30	131	33	125	30
			Total Equity Companies	13,999	5,304	4,969	716	14,144	5,367	4,968	707
Total gross and net productive wells				43,281	19,457	37,833	18,727	43,506	19,415	43,130	22,613

There were 30,263 gross and 25,827 net operated wells at year‑end 2017 and 35,047 gross and 29,375 net operated wells at year-end 2016. The number of wells with multiple completions was 1,366 gross in 2017 and 1,209 gross in 2016.

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B. Gross and Net Developed Acreage

				Year-End 2017		Year-End 2016
				Gross	Net	Gross	Net
				(thousands of acres)
Gross and Net Developed Acreage
	Consolidated Subsidiaries
		United States		14,836	9,026	14,678	8,958
		Canada/Other Americas (1)		3,604	2,328	3,374	2,146
		Europe		2,970	1,335	3,215	1,446
		Africa		2,492	866	2,492	866
		Asia		1,983	586	1,934	562
		Australia/Oceania		3,262	1,068	3,020	1,005
			Total Consolidated Subsidiaries	29,147	15,209	28,713	14,983
	Equity Companies
		United States		930	208	929	209
		Europe		4,170	1,317	4,191	1,321
		Asia		628	155	628	155
			Total Equity Companies	5,728	1,680	5,748	1,685
Total gross and net developed acreage				34,875	16,889	34,461	16,668

(1)   Includes developed acreage in Other Americas of 375 gross and 244 net thousands of acres for 2017 and 213 gross and 109 net thousands of acres for 2016.

Separate acreage data for oil and gas are not maintained because, in many instances, both are produced from the same acreage.

C. Gross and Net Undeveloped Acreage

				Year-End 2017		Year-End 2016
				Gross	Net	Gross	Net
				(thousands of acres)
Gross and Net Undeveloped Acreage
	Consolidated Subsidiaries
		United States		7,506	3,489	7,854	3,637
		Canada/Other Americas (1)		29,495	13,410	24,054	10,569
		Europe		7,576	3,622	7,218	3,368
		Africa		37,699	26,705	9,496	4,979
		Asia		5,802	2,680	2,436	865
		Australia/Oceania		15,976	11,125	8,054	5,497
			Total Consolidated Subsidiaries	104,054	61,031	59,112	28,915
	Equity Companies
		United States		207	77	223	81
		Europe		100	25	100	25
		Africa		596	149	-	-
		Asia		191,147	63,633	191,147	63,633
			Total Equity Companies	192,050	63,884	191,470	63,739
Total gross and net undeveloped acreage				296,104	124,915	250,582	92,654

(1)   Includes undeveloped acreage in Other Americas of 18,625 gross and 8,053 net thousands of acres for 2017 and 13,106 gross and 5,146 net thousands of acres for 2016.

ExxonMobil’s investment in developed and undeveloped acreage is comprised of numerous concessions, blocks and leases. The terms and conditions under which the Corporation maintains exploration and/or production rights to the acreage are property‑specific, contractually defined and vary significantly from property to property. Work programs are designed to ensure that the exploration potential of any property is fully evaluated before expiration. In some instances, the Corporation may elect to relinquish acreage in advance of the contractual expiration date if the evaluation process is complete and there is not a business basis for extension. In cases where additional time may be required to fully evaluate acreage, the Corporation has generally been successful in obtaining extensions. The scheduled expiration of leases and concessions for undeveloped acreage over the next three years is not expected to have a material adverse impact on the Corporation.

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D. Summary of Acreage Terms

UNITED STATES

Oil and gas exploration and production rights are acquired from mineral interest owners through a lease. Mineral interest owners include the Federal and State governments, as well as private mineral interest owners. Leases typically have an exploration period ranging from one to ten years, and a production period that normally remains in effect until production ceases. Under certain circumstances, a lease may be held beyond its exploration term even if production has not commenced. In some instances regarding private property, a “fee interest” is acquired where the underlying mineral interests are owned outright.

CANADA / OTHER AMERICAS

Canada

Exploration licenses or leases in onshore areas are acquired for varying periods of time with renewals or extensions possible. These licenses or leases entitle the holder to continue existing licenses or leases upon completing specified work. In general, these license and lease agreements are held as long as there is proven production capability on the licenses and leases. Exploration licenses in offshore eastern Canada and the Beaufort Sea are held by work commitments of various amounts and rentals. They are valid for a maximum term of nine years. Offshore production licenses are valid for 25 years, with rights of extension for continued production. Significant discovery licenses in the offshore, relating to currently undeveloped discoveries, do not have a definite term.

Argentina

The Federal Hydrocarbon Law was amended in December 2014. The onshore concession terms granted prior to the amendment are up to six years, divided into three potential exploration periods, with an optional extension for up to one year depending on the classification of the area. Pursuant to the amended law, the production term for a conventional production concession would be 25 years, and 35 years for an unconventional concession, with unlimited ten-year extensions possible, once a field has been developed.

Guyana

The Petroleum (Exploration and Production) Act authorizes the government of Guyana to grant petroleum prospecting and production licenses and to enter into petroleum agreements for the exploration and production of hydrocarbons. Petroleum agreements provide for an exploration period of up to 10 years with a production period of 20 years with a 10 year extension.

EUROPE

Germany

Exploration concessions are granted for an initial maximum period of five years, with an unlimited number of extensions of up to three years each. Extensions are subject to specific, minimum work commitments. Production licenses are normally granted for 20 to 25 years with multiple possible extensions as long as there is production on the license.

Netherlands                                                                     

Under the Mining Law, effective January 1, 2003, exploration and production licenses for both onshore and offshore areas are issued for a period as explicitly defined in the license. The term is based on the period of time necessary to perform the activities for which the license is issued. License conditions are stipulated in the license and are based on the Mining Law.

Production rights granted prior to January 1, 2003, remain subject to their existing terms, and differ slightly for onshore and offshore areas. Onshore production licenses issued prior to 1988 were indefinite; from 1988 they were issued for a period as explicitly defined in the license, ranging from 35 to 45 years. Offshore production licenses issued before 1976 were issued for a fixed period of 40 years; from 1976 they were again issued for a period as explicitly defined in the license, ranging from 15 to 40 years.

Norway

Licenses issued between 1972 and 1997 were for an initial period of up to six years (with extension of the initial period of one year at a time up to ten years after 1985), and an extension period of up to 30 years, with relinquishment of at least one-half of the original area required at the end of the initial period. Licenses issued after July 1, 1997, have an initial period of up to ten years and a normal extension period of up to 30 years or in special cases of up to 50 years, and with relinquishment of at least one-half of the original area required at the end of the initial period.

19

United Kingdom

Acreage terms are fixed by the government and are periodically changed. For example, many of the early licenses issued under the first four licensing rounds provided for an initial term of six years with relinquishment of at least one-half of the original area at the end of the initial term, subject to extension for a further 40 years. At the end of any such 40-year term, licenses may continue in producing areas until cessation of production; or licenses may continue in development areas for periods agreed on a case-by-case basis until they become producing areas; or licenses terminate in all other areas. The majority of traditional licenses currently issued have an initial exploration term of four years with a second term extension of four years, and a final production term of 18 years, with a mandatory relinquishment of 50 percent of the acreage after the initial term and of all acreage that is not covered by a development plan at the end of the second term.

Terms for exploration acreage in technically challenged areas are governed by frontier production licenses, generally covering a larger initial area than traditional licenses, with an initial exploration term of six or nine years with a second term extension of six years, and a final production term of 18 years, with relinquishment of 75 percent of the original area after three years and 50 percent of the remaining acreage after the next three years. Innovate licenses issued replace traditional and frontier licenses and offer greater flexibility with respect to periods and work program commitments.

AFRICA

Angola

Exploration and production activities are governed by production sharing agreements with an initial exploration term of four years and an optional second phase of two to three years. The production period is 25 years, and agreements generally provide for a negotiated extension.

Chad

Exploration permits are issued for a period of five years, and are renewable for one or two further five-year periods. The terms and conditions of the permits, including relinquishment obligations, are specified in a negotiated convention. The production term is 30 years and in 2017 was extended by 20 years to 2050.

Equatorial Guinea

Exploration, development and production activities are governed by production sharing contracts (PSCs) negotiated with the State Ministry of Mines and Hydrocarbons. A new PSC was signed in 2015; the initial exploration period is five years for oil and gas, with multi-year extensions available at the discretion of the Ministry and limited relinquishments in the absence of commercial discoveries. The production period for crude oil ranges from 25 to 30 years, while the production period for natural gas ranges from 25 to 50 years.

Mozambique

Exploration and production activities are generally governed by concession contracts with the Government of the Republic of Mozambique, represented by the Ministry of Mineral Resources and Energy. An interest in Area 4 offshore Mozambique was acquired in December 2017. Terms for Area 4 are governed by the Exploration and Production Concession Contract (EPCC) for Area 4 Offshore of the Rovuma Block dated December 20, 2006 and Decree Law 2/2014. The EPCC expires 30 years after the approval of a plan of development for a given discovery area.

Nigeria

Exploration and production activities in the deepwater offshore areas are typically governed by production sharing contracts (PSCs) with the national oil company, the Nigerian National Petroleum Corporation (NNPC). NNPC typically holds the underlying Oil Prospecting License (OPL) and any resulting Oil Mining Lease (OML). The terms of the PSCs are generally 30 years, including a ten-year exploration period (an initial exploration phase that can be divided into multiple optional periods) covered by an OPL. Upon commercial discovery, an OPL may be converted to an OML. Partial relinquishment is required under the PSC at the end of the ten-year exploration period, and OMLs have a 20-year production period that may be extended.

Some exploration activities are carried out in deepwater by joint ventures with local companies holding interests in an OPL. OPLs in deepwater offshore areas are valid for 10 years, while in all other areas the licenses are for five years. Demonstrating a commercial discovery is the basis for conversion of an OPL to an OML.

OMLs granted prior to the 1969 Petroleum Act (i.e., under the Mineral Oils Act 1914, repealed by the 1969 Petroleum Act) were for 30 years onshore and 40 years in offshore areas and have been renewed, effective December 1, 2008, for a further period of 20 years, with a further renewal option of 20 years. Operations under these pre-1969 OMLs are conducted under a joint venture agreement with NNPC rather than a PSC. Commercial terms applicable to the existing joint venture oil production are defined by the Petroleum Profits Tax Act.

20

OMLs granted under the 1969 Petroleum Act, which include all deepwater OMLs, have a maximum term of 20 years without distinction for onshore or offshore location and are renewable, upon 12 months’ written notice, for another period of 20 years. OMLs not held by NNPC are also subject to a mandatory 50-percent relinquishment after the first 10 years of their duration.

ASIA

Azerbaijan

The production sharing agreement (PSA) for the development of the Azeri-Chirag-Gunashli field is established for an initial period of 30 years starting from the PSA execution date in 1994. The PSA was amended in September 2017 to extend the term by 25 years to 2049.

Other exploration and production activities are governed by PSAs negotiated with the national oil company of Azerbaijan. The exploration period typically consists of three or four years with the possibility of a one to three-year extension. The production period, which includes development, is for 25 years or 35 years with the possibility of one or two five-year extensions.

Indonesia

Exploration and production activities in Indonesia are generally governed by cooperation contracts, usually in the form of a production sharing contract (PSC), negotiated with BPMIGAS, a government agency established in 2002 to manage upstream oil and gas activities. In 2012, Indonesia’s Constitutional Court ruled certain articles of law relating to BPMIGAS to be unconstitutional, but stated that all existing PSCs signed with BPMIGAS should remain in force until their expiry, and the functions and duties previously performed by BPMIGAS are to be carried out by the relevant Ministry of the Government of Indonesia until the promulgation of a new oil and gas law. By presidential decree, SKKMIGAS became the interim successor to BPMIGAS. The current PSCs have an exploration period of six years, which can be extended up to 10 years, and an exploitation period of 20 years. PSCs generally require the contractor to relinquish 10 percent to 20 percent of the contract area after three years and generally allow the contractor to retain no more than 50 percent to 80 percent of the original contract area after six years, depending on the acreage and terms.

Iraq

Development and production activities in the state-owned oil and gas fields are governed by contracts with regional oil companies of the Iraqi Ministry of Oil. An ExxonMobil affiliate entered into a contract with Basra Oil Company of the Iraqi Ministry of Oil for the rights to participate in the development and production activities of the West Qurna Phase I oil and gas field effective March 1, 2010. The term of the contract is 20 years with the right to extend for five years. The contract provides for cost recovery plus per-barrel fees for incremental production above specified levels.

Exploration and production activities in the Kurdistan Region of Iraq are governed by production sharing contracts (PSCs) negotiated with the regional government of Kurdistan in 2011. The exploration term is for five years, with extensions available as provided by the PSCs and at the discretion of the regional government of Kurdistan. Current PSCs remain in effect by agreement of the regional government to allow additional time for exploration or evaluation of commerciality. The production period is 20 years with the right to extend for five years.

Kazakhstan

Onshore exploration and production activities are governed by the production license, exploration license and joint venture agreements negotiated with the Republic of Kazakhstan. Existing production operations have a 40-year production period that commenced in 1993.

Offshore exploration and production activities are governed by a production sharing agreement negotiated with the Republic of Kazakhstan. The exploration period is six years followed by separate appraisal periods for each discovery. The production period for each discovery, which includes development, is 20 years from the date of declaration of commerciality with the possibility of two ten-year extensions.

Malaysia

Production activities are governed by production sharing contracts (PSCs) negotiated with the national oil company. The PSCs have exploration and production terms ranging up to 38 years. All extensions are subject to the national oil company’s prior written approval. The production periods range from 15 to 29 years, depending on the provisions of the respective contract.

Qatar

The State of Qatar grants gas production development project rights to develop and supply gas from the offshore North Field to permit the economic development and production of gas reserves sufficient to satisfy the gas and LNG sales obligations of these projects.

21

Republic of Yemen

The Jannah production sharing agreement has a development period extending 20 years from first commercial declaration, which was made in June 1995. Due to force majeure events, the development period has been extended beyond its original expiration date, with the possibility of further extensions due to ongoing force majeure events.

Russia

Terms for ExxonMobil’s Sakhalin acreage are fixed by the current production sharing agreement (PSA) between the Russian government and the Sakhalin-1 consortium, of which ExxonMobil is the operator.

Exploration and production activities in the Kara, Laptev, Chukchi and Black Seas are governed by joint venture agreements concluded with Rosneft in 2013 and 2014 that cover certain of Rosneft’s offshore licenses. The Kara Sea licenses covered by the joint venture agreements concluded in 2013 extend through 2040 and include exploration periods through 2020 and 2022. Additional licenses in the Kara, Laptev and Chukchi Seas covered by the joint venture agreements concluded in 2014 extend through 2043 and include an exploration period through 2023. The Kara, Laptev and Chukchi Sea licenses require development plan submission within eight to eleven years from a discovery and development activities within five years of plan approval. The Black Sea exploration license extends through 2020, and a discovery is the basis for obtaining a license for production. Refer to the relevant portion of “Note 7: Equity Company Information” of the Financial Section of this report for additional information on the Corporation’s participation in Rosneft joint venture activities.

Thailand

The Petroleum Act of 1971 allows production under ExxonMobil’s concession for 30 years with a ten-year extension at terms generally prevalent at the time. The term of the concession expires in 2021.

United Arab Emirates

An interest in the development and production activities of the Upper Zakum field, a major offshore field, was acquired effective as of January 2006, for a term expiring March 2026. In 2013 the governing agreements were extended to 2041 and in 2017 they were extended to 2051.

AUSTRALIA / OCEANIA

Australia

Exploration and production activities conducted offshore in Commonwealth waters are governed by Federal legislation. Exploration permits are granted for an initial term of six years with two possible five-year renewal periods. Retention leases may be granted for resources that are not commercially viable at the time of application, but are expected to become commercially viable within 15 years. These are granted for periods of five years and renewals may be requested. Prior to July 1998, production licenses were granted initially for 21 years, with a further renewal of 21 years and thereafter “indefinitely”, i.e., for the life of the field. Effective from July 1998, new production licenses are granted “indefinitely”. In each case, a production license may be terminated if no production operations have been carried on for five years.

Papua New Guinea

Exploration and production activities are governed by the Oil and Gas Act. Petroleum Prospecting licenses are granted for an initial term of six years with a five-year extension possible (an additional extension of three years is possible in certain circumstances). Generally, a 50-percent relinquishment of the license area is required at the end of the initial six-year term, if extended. Petroleum Development licenses are granted for an initial 25-year period. An extension of up to 20 years may be granted at the Minister’s discretion. Petroleum Retention licenses may be granted for gas resources that are not commercially viable at the time of application, but may become commercially viable within the maximum possible retention time of 15 years. Petroleum Retention licenses are granted for five-year terms, and may be extended, at the Minister’s discretion, twice for the maximum retention time of 15 years. Extensions of Petroleum Retention licenses may be for periods of less than one year, renewable annually, if the Minister considers at the time of extension that the resources could become commercially viable in less than five years.

22

Information with regard to the Downstream segment follows:

ExxonMobil’s Downstream segment manufactures and sells petroleum products. The refining and supply operations encompass a global network of manufacturing plants, transportation systems, and distribution centers that provide a range of fuels, lubricants and other products and feedstocks to our customers around the world.

Refining Capacity At Year-End 2017 (1)

				ExxonMobil	ExxonMobil
				Share  KBD (2)	Interest %
United States
	Joliet		Illinois	236	100
	Baton Rouge		Louisiana	503	100
	Billings		Montana	60	100
	Baytown		Texas	561	100
	Beaumont		Texas	366	100
		Total United States		1,726
Canada
	Strathcona		Alberta	191	69.6
	Nanticoke		Ontario	113	69.6
	Sarnia		Ontario	119	69.6
		Total Canada		423
Europe
	Antwerp		Belgium	307	100
	Fos-sur-Mer		France	133	82.9
	Gravenchon		France	239	82.9
	Karlsruhe		Germany	78	25
	Augusta		Italy	198	100
	Trecate		Italy	132	74.8
	Rotterdam		Netherlands	192	100
	Slagen		Norway	116	100
	Fawley		United Kingdom	262	100
		Total Europe		1,657
Asia Pacific
	Altona		Australia	86	100
	Fujian		China	67	25
	Jurong/PAC		Singapore	592	100
	Sriracha		Thailand	167	66
		Total Asia Pacific		912
Middle East
	Yanbu		Saudi Arabia	200	50
Total Worldwide				4,918

(1)   Capacity data is based on 100 percent of rated refinery process unit stream-day capacities under normal operating conditions, less the impact of shutdowns for regular repair and maintenance activities, averaged over an extended period of time. The listing excludes cost company refining capacity in New Zealand, and the Laffan Refinery in Qatar for which results are reported in the Upstream segment.

(2)   Thousands of barrels per day (KBD). ExxonMobil share reflects 100 percent of atmospheric distillation capacity in operations of ExxonMobil and majority-owned subsidiaries. For companies owned 50 percent or less, ExxonMobil share is the greater of ExxonMobil’s interest or that portion of distillation capacity normally available to ExxonMobil.

23

The marketing operations sell products and services throughout the world through our Exxon, Esso  and Mobil  brands.

Retail Sites At Year-End 2017

United States
	Owned/leased		-
	Distributors/resellers		10,573
		Total United States	10,573
Canada
	Owned/leased		-
	Distributors/resellers		1,829
		Total Canada	1,829
Europe
	Owned/leased		1,843
	Distributors/resellers		3,975
		Total Europe	5,818
Asia Pacific
	Owned/leased		598
	Distributors/resellers		946
		Total Asia Pacific	1,544
Latin America
	Owned/leased		5
	Distributors/resellers		785
		Total Latin America	790
Middle East/Africa
	Owned/leased		226
	Distributors/resellers		182
		Total Middle East/Africa	408
Worldwide
	Owned/leased		2,672
	Distributors/resellers		18,290
		Total Worldwide	20,962

24

Information with regard to the Chemical segment follows:

ExxonMobil’s Chemical segment manufactures and sells petrochemicals. The Chemical business supplies olefins, polyolefins, aromatics, and a wide variety of other petrochemicals.

Chemical Complex Capacity At Year-End 2017 (1)(2)

								ExxonMobil
				Ethylene	Polyethylene	Polypropylene	Paraxylene	Interest %
North America
	Baton Rouge		Louisiana	1.1	1.3	0.4	-	100
	Baytown		Texas	2.3	-	0.7	0.6	100
	Beaumont		Texas	0.9	1.0	-	0.3	100
	Mont Belvieu		Texas	-	2.3	-	-	100
	Sarnia		Ontario	0.3	0.5	-	-	69.6
		Total North America		4.6	5.1	1.1	0.9
Europe
	Antwerp		Belgium	-	0.4	-	-	100
	Fife		United Kingdom	0.4	-	-	-	50
	Gravenchon		France	0.4	0.4	0.3	-	100
	Meerhout		Belgium	-	0.5	-	-	100
	Rotterdam		Netherlands	-	-	-	0.7	100
		Total Europe		0.8	1.3	0.3	0.7
Middle East
	Al Jubail		Saudi Arabia	0.6	0.7	-	-	50
	Yanbu		Saudi Arabia	1.0	0.7	0.2	-	50
		Total Middle East		1.6	1.4	0.2	-
Asia Pacific
	Fujian		China	0.3	0.2	0.2	0.2	25
	Singapore		Singapore	1.9	1.9	0.9	1.8	100
	Sriracha		Thailand	-	-	-	0.5	66
		Total Asia Pacific		2.2	2.1	1.1	2.5
Total Worldwide				9.2	9.9	2.7	4.1

(1)   Capacity for ethylene, polyethylene, polypropylene and paraxylene in millions of metric tons per year.

(2)   Capacity reflects 100 percent for operations of ExxonMobil and majority‑owned subsidiaries. For companies owned 50 percent or less, capacity is ExxonMobil’s interest.

25

Item 3.       Legal Proceedings

As reported in the Corporation’s Form 10-Q for the second quarter of 2017, on June 20, 2017, the United States Department of Justice (DOJ) and the United States Environmental Protection Agency (EPA) notified XTO Energy Inc. (XTO) concerning alleged violations of the Clean Air Act and the Fort Berthold Indian Reservation Federal Implementation Plan regarding the alleged failure of vapor control systems to properly route tank vapors to control devices at well pads and tank farms on the Fort Berthold Indian Reservation. In January 2018, XTO, the DOJ and the EPA agreed to the terms of a Consent Decree concerning those alleged violations. XTO has agreed to pay a penalty of $320,000, install automatic tank gauging on 30 well sites, and monitor and report emissions for three years. Following signature by EPA and the DOJ, the Consent Decree is subject to a 30-day public comment period and approval by the United States Federal District Court for the District of North Dakota – Western Division, in Bismarck, North Dakota, which is expected in March 2018.

As reported in the Corporation’s Form 10-Q for the second quarter of 2017, in late April 2017, the State of North Dakota Department of Health (NDDOH) and the North Dakota State Office of the Attorney General notified XTO of their interest in settling alleged violations of the North Dakota Century Code and implementing regulations regarding the alleged failure of vapor control systems to properly route tank vapors to control devices at well pads and tank farms outside the Fort Berthold Indian Reservation. On February 1, 2018, the South Central Judicial District Court in Bismarck, North Dakota, approved a Consent Decree between XTO and NDDOH concerning those alleged violations. Under the Consent Decree, XTO will pay a civil penalty of up to $665,000, but that amount may be reduced if specified corrective actions are achieved by deadlines set forth in the Consent Decree. Assuming these deadlines are met, XTO anticipates that it will pay a penalty of approximately $440,000 in the fourth quarter of 2018. XTO will monitor and report compliance with the terms of the Consent Decree for a period of two years.

On July 20, 2017, the United States Department of Treasury, Office of Foreign Assets Control (OFAC) assessed a civil penalty against Exxon Mobil Corporation, ExxonMobil Development Company and ExxonMobil Oil Corporation for violating the Ukraine-Related Sanctions Regulations, 31 C.F.R. part 589. The assessed civil penalty is in the amount of $2,000,000. ExxonMobil and its affiliates have been and continue to be in compliance with all sanctions and disagree that any violation has occurred. ExxonMobil and its affiliates filed a complaint on July 20, 2017, in the United States Federal District Court, Northern District of Texas seeking judicial review of, and to enjoin, the civil penalty under the Administrative Procedures Act and the United States Constitution, including on the basis that it represents an arbitrary and capricious action by OFAC and a violation of the Company’s due process rights.

Refer to the relevant portions of “Note 16: Litigation and Other Contingencies” of the Financial Section of this report for additional information on legal proceedings.

Item 4.       MINE SAFETY DISCLOSURES

Not applicable.

_______________________

26

Executive Officers of the Registrant [pursuant to Instruction 3 to Regulation S-K, Item 401(b)]

(positions and ages as of February 28, 2018)

Darren W. Woods	Chairman of the Board
Held current title since:	January 1, 2017	Age: 53
Mr. Darren W. Woods was President of ExxonMobil Refining & Supply Company August 1, 2012 – July 31, 2014 and Vice President of Exxon Mobil Corporation August 1, 2012 – May 31, 2014. He was Senior Vice President of Exxon Mobil Corporation June 1, 2014 – December 31, 2015. He became a Director and President of Exxon Mobil Corporation on January 1, 2016, and Chairman of the Board and Chief Executive Officer on January 1, 2017, positions he still holds as of this filing date.
Mark W. Albers	Senior Vice President
Held current title since:	April 1, 2007	Age: 61
Mr. Mark W. Albers became Senior Vice President of Exxon Mobil Corporation on April 1, 2007, a position he still holds as of this filing date.
Neil A. Chapman	Senior Vice President
Held current title since:	January 1, 2018	Age: 55
Mr. Neil A. Chapman was Senior Vice President, ExxonMobil Chemical Company April 1, 2011 – December 31, 2014. He was President of ExxonMobil Chemical Company and Vice President of Exxon Mobil Corporation January 1, 2015 – December 31, 2017. He became Senior Vice President of Exxon Mobil Corporation on January 1, 2018, a position he still holds as of this filing date.
Michael J. Dolan	Senior Vice President
Held current title since:	April 1, 2008	Age: 64
Mr. Michael J. Dolan became Senior Vice President of Exxon Mobil Corporation on April 1, 2008, a position he still holds as of this filing date.
Andrew P. Swiger	Senior Vice President
Held current title since:	April 1, 2009	Age: 61
Mr. Andrew P. Swiger became Senior Vice President of Exxon Mobil Corporation on April 1, 2009, a position he still holds as of this filing date.
Jack P. Williams, Jr.	Senior Vice President
Held current title since:	June 1, 2014	Age: 54
Mr. Jack P. Williams, Jr. was President of XTO Energy Inc. June 25, 2010 – May 31, 2013. He was Executive Vice President of ExxonMobil Production Company June 1, 2013 – June 30, 2014. He became Senior Vice President of Exxon Mobil Corporation on June 1, 2014, a position he still holds as of this filing date.
Bradley W. Corson	Vice President
Held current title since:	March 1, 2015	Age: 56
Mr. Bradley W. Corson was Regional Vice President, Europe/Caspian for ExxonMobil Production Company May 1, 2009 – April 30, 2014. He was Vice President, ExxonMobil Upstream Ventures May 1, 2014 – February 28, 2015. He became President of ExxonMobil Upstream Ventures and Vice President of Exxon Mobil Corporation on March 1, 2015, positions he still holds as of this filing date.

27

Neil W. Duffin	Vice President
Held current title since:	January 1, 2017	Age: 61
Mr. Neil W. Duffin was President of ExxonMobil Development Company April 13, 2007 – December 31, 2016. He became President of ExxonMobil Production Company and Vice President of Exxon Mobil Corporation on January 1, 2017, positions he still holds as of this filing date.
Randall M. Ebner	Vice President and General Counsel
Held current title since:	November 1, 2016	Age: 62
Mr. Randall M. Ebner was Assistant General Counsel of Exxon Mobil Corporation January 1, 2009 – October 31, 2016. He became Vice President and General Counsel of Exxon Mobil Corporation on November 1, 2016, positions he still holds as of this filing date.
Robert S. Franklin	Vice President
Held current title since:	May 1, 2009	Age: 60
Mr. Robert S. Franklin was President of ExxonMobil Upstream Ventures and Vice President of Exxon Mobil Corporation May 1, 2009 – February 28, 2013. He became President of ExxonMobil Gas & Power Marketing Company and Vice President of Exxon Mobil Corporation on March 1, 2013, positions he holds as of February 28, 2018.
Stephen M. Greenlee	Vice President
Held current title since:	September 1, 2010	Age: 60
Mr. Stephen M. Greenlee became President of ExxonMobil Exploration Company and Vice President of Exxon Mobil Corporation on September 1, 2010, positions he still holds as of this filing date.
Liam M. Mallon	President, ExxonMobil Development Company
Held current title since:	January 1, 2017	Age: 55
Mr. Liam M. Mallon was Vice President, Africa, ExxonMobil Production Company June 1, 2012 – January 31, 2014. He was Executive Vice President, ExxonMobil Development Company February 1, 2014 – December 31, 2016. He became President of ExxonMobil Development Company on January 1, 2017, a position he still holds as of this filing date.
Bryan W. Milton	Vice President
Held current title since:	August 1, 2016	Age: 53
Mr. Bryan W. Milton was President of ExxonMobil Global Services Company April 1, 2011 – July 31, 2016. He was President of ExxonMobil Fuels, Lubricants & Specialties Marketing Company and Vice President of Exxon Mobil Corporation August 1, 2016 – December 31, 2017. He became President of ExxonMobil Fuels & Lubricants Company and Vice President of Exxon Mobil Corporation on January 1, 2018, positions he still holds as of this filing date.
Sara N. Ortwein	President, XTO Energy Inc., a subsidiary of the Corporation
Held current title since:	November 1, 2016	Age: 59
Ms. Sara N. Ortwein was President of ExxonMobil Upstream Research Company September 1, 2010 – October 31, 2016. She became President of XTO Energy Inc. on November 1, 2016, a position she still holds as of this filing date.
David S. Rosenthal	Vice President and Controller
Held current title since:	October 1, 2008 (Vice President) September 1, 2014 (Controller)	Age: 61
Mr. David S. Rosenthal was Vice President – Investor Relations and Secretary of Exxon Mobil Corporation October 1, 2008 – August 31, 2014. He became Vice President and Controller of Exxon Mobil Corporation on September 1, 2014, positions he still holds as of this filing date.

28

Robert N. Schleckser	Vice President and Treasurer
Held current title since:	May 1, 2011	Age: 61
Mr. Robert N. Schleckser became Vice President and Treasurer of Exxon Mobil Corporation on May 1, 2011, positions he still holds as of this filing date.
James M. Spellings, Jr.	Vice President and General Tax Counsel
Held current title since:	March 1, 2010	Age: 56
Mr. James M. Spellings, Jr. became Vice President and General Tax Counsel of Exxon Mobil Corporation on March 1, 2010, positions he still holds as of this filing date.
John R. Verity	Vice President
Held current title since:	January 1, 2018	Age: 59
Mr. John R. Verity was Vice President, Polyolefins, ExxonMobil Chemical Company October 17, 2008 – March 31, 2014. He was Vice President, Plastics & Resins, ExxonMobil Chemical Company April 1, 2014 – December 31, 2014. He was Senior Vice President, Polymers, ExxonMobil Chemical Company January 1, 2015 – December 31, 2017. He became President of ExxonMobil Chemical Company and Vice President of Exxon Mobil Corporation on January 1, 2018, positions he still holds as of this filing date.
Theodore J. Wojnar, Jr.	Vice President – Corporate Strategic Planning
Held current title since:	August 1, 2017	Age: 58
Mr. Theodore J. Wojnar, Jr. was President of ExxonMobil Research and Engineering Company April 1, 2011 – July 31, 2017. He became Vice President – Corporate Strategic Planning of Exxon Mobil Corporation on August 1, 2017, a position he still holds as of this filing date.
Jeffrey J. Woodbury	Vice President – Investor Relations and Secretary
Held current title since:	July 1, 2011 (Vice President) September 1, 2014 (Secretary)	Age: 57
Mr. Jeffrey J. Woodbury was Vice President, Safety, Security, Health and Environment of Exxon Mobil Corporation July 1, 2011 – August 31, 2014. He became Vice President – Investor Relations and Secretary of Exxon Mobil Corporation on September 1, 2014, positions he still holds as of this filing date.

Officers are generally elected by the Board of Directors at its meeting on the day of each annual election of directors, with each such officer serving until a successor has been elected and qualified.

29

PART II

Item 5.       Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Reference is made to the “Quarterly Information” portion of the Financial Section of this report and Item 12 in Part III of this report.

Issuer Purchases of Equity Securities for Quarter Ended December 31, 2017
				Total Number of
				Shares
				Purchased as	Maximum Number
				Part of Publicly	of Shares that May
		Total Number of	Average Price	Announced	Yet Be Purchased
		Shares	Paid per	Plans or	Under the Plans or
Period		Purchased	Share	Programs	Programs
October 2017		-		-
November 2017		-		-
December 2017		-		-
	Total	-		-	(See Note 1)

During the fourth quarter, the Corporation did not purchase any shares of its common stock for the treasury.

Note 1 - On August 1, 2000, the Corporation announced its intention to resume purchases of shares of its common stock for the treasury both to offset shares issued in conjunction with company benefit plans and programs and to gradually reduce the number of shares outstanding. The announcement did not specify an amount or expiration date. The Corporation has continued to purchase shares since this announcement and to report purchased volumes in its quarterly earnings releases. In its earnings release dated February 2, 2016, the Corporation stated it will continue to acquire shares to offset dilution in conjunction with benefit plans and programs, but had suspended making purchases to reduce shares outstanding effective beginning the first quarter of 2016.

Item 6.       Selected Financial Data

	Years Ended December 31,
	2017	2016	2015	2014	2013
	(millions of dollars, except per share amounts)
Sales and other operating revenue (1)	237,162	200,628	239,854	367,647	393,039
Net income attributable to ExxonMobil	19,710	7,840	16,150	32,520	32,580
Earnings per common share	4.63	1.88	3.85	7.60	7.37
Earnings per common share - assuming dilution	4.63	1.88	3.85	7.60	7.37
Cash dividends per common share	3.06	2.98	2.88	2.70	2.46
Total assets	348,691	330,314	336,758	349,493	346,808
Long-term debt	24,406	28,932	19,925	11,653	6,891

(1)   Effective December 31, 2017, the Corporation revised its accounting policy election related to sales-based taxes. See Note 2: Accounting Changes of the Financial Section of this report. As a result, Sales and other operating revenue excludes previously reported sales-based taxes of $17,980 million in 2016, $19,634 million in 2015, $26,458 million in 2014 and $27,797 million in 2013.

Item 7.       Management’s Discussion and Analysis of Financial Condition and Results of Operations

Reference is made to the section entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in the Financial Section of this report.

30

Item 7A.    Quantitative and Qualitative Disclosures About Market Risk

Reference is made to the section entitled “Market Risks, Inflation and Other Uncertainties”, excluding the part entitled “Inflation and Other Uncertainties”, in the Financial Section of this report. All statements, other than historical information incorporated in this Item 7A, are forward-looking statements. The actual impact of future market changes could differ materially due to, among other things, factors discussed in this report.

Item 8.       Financial Statements and Supplementary Data

Reference is made to the following in the Financial Section of this report: 

· Consolidated financial statements, together with the report thereon of PricewaterhouseCoopers LLP dated February 28, 2018, beginning with the section entitled “Report of Independent Registered Public Accounting Firm” and continuing through “Note 20: Acquisitions”;

· “Quarterly Information” (unaudited);

· “Supplemental Information on Oil and Gas Exploration and Production Activities” (unaudited); and

· “Frequently Used Terms” (unaudited).

Financial Statement Schedules have been omitted because they are not applicable or the required information is shown in the consolidated financial statements or notes thereto.

Item 9.       Changes in and Disagreements With Accountants on Accounting and Financial Disclosure

None.

Item 9A.    Controls and Procedures

Management’s Evaluation of Disclosure Controls and Procedures

As indicated in the certifications in Exhibit 31 of this report, the Corporation’s Chief Executive Officer, Principal Financial Officer and Principal Accounting Officer have evaluated the Corporation’s disclosure controls and procedures as of December 31, 2017. Based on that evaluation, these officers have concluded that the Corporation’s disclosure controls and procedures are effective in ensuring that information required to be disclosed by the Corporation in the reports that it files or submits under the Securities Exchange Act of 1934, as amended, is accumulated and communicated to them in a manner that allows for timely decisions regarding required disclosures and are effective in ensuring that such information is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms.

Management’s Report on Internal Control Over Financial Reporting

Management, including the Corporation’s Chief Executive Officer, Principal Financial Officer and Principal Accounting Officer, is responsible for establishing and maintaining adequate internal control over the Corporation’s financial reporting. Management conducted an evaluation of the effectiveness of internal control over financial reporting based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on this evaluation, management concluded that Exxon Mobil Corporation’s internal control over financial reporting was effective as of December 31, 2017.

PricewaterhouseCoopers LLP, an independent registered public accounting firm, audited the effectiveness of the Corporation’s internal control over financial reporting as of December 31, 2017, as stated in their report included in the Financial Section of this report.

Changes in Internal Control Over Financial Reporting

There were no changes during the Corporation’s last fiscal quarter that materially affected, or are reasonably likely to materially affect, the Corporation’s internal control over financial reporting.

Item 9B.     Other Information

None.

31

PART III

Item 10.     Directors, Executive Officers and Corporate Governance

Reference is made to the section of this report titled “Executive Officers of the Registrant [pursuant to Instruction 3 to Regulation S-K, Item 401(b)]”.

Incorporated by reference to the following from the registrant’s definitive proxy statement for the 2018 annual meeting of shareholders (the “2018 Proxy Statement”):

· The section entitled “Election of Directors”;

· The portion entitled “Section 16(a) Beneficial Ownership Reporting Compliance” of the section entitled “Director and Executive Officer Stock Ownership”;

· The portions entitled “Director Qualifications”, “Board Succession” and “Code of Ethics and Business Conduct” of the section entitled “Corporate Governance”; and

· The “Audit Committee” portion, “Director Independence” portion and the membership table of the portions entitled “Board Meetings and Annual Meeting Attendance” and “Board Committees” of the section entitled “Corporate Governance”.

Item 11.     Executive Compensation

Incorporated by reference to the sections entitled “Director Compensation”, “Compensation Committee Report”, “Compensation Discussion and Analysis”, “Executive Compensation Tables” and “Pay Ratio” of the registrant’s 2018 Proxy Statement.

Item 12.     Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The information required under Item 403 of Regulation S-K is incorporated by reference to the sections “Director and Executive Officer Stock Ownership” and “Certain Beneficial Owners” of the registrant’s 2018 Proxy Statement.

Equity Compensation Plan Information
		(a)		(b)	(c)
					Number of Securities
				Weighted-	Remaining Available
				Average	for Future Issuance
		Number of Securities		Exercise Price	Under Equity
		to be Issued Upon		of Outstanding	Compensation
		Exercise of		Options,	Plans [Excluding
		Outstanding Options,		Warrants and	Securities Reflected
Plan Category		Warrants and Rights		Rights	in Column (a)]
Equity compensation plans approved by security holders		37,374,885	(1)	-	89,100,173	(2)(3)
Equity compensation plans not approved by security holders		-		-	-
	Total	37,374,885		-	89,100,173

(1)   The number of restricted stock units to be settled in shares.

(2)   Available shares can be granted in the form of restricted stock, options, or other stock-based awards. Includes 88,595,473 shares available for award under the 2003 Incentive Program and 504,700 shares available for award under the 2004 Non‑Employee Director Restricted Stock Plan.

(3)   Under the 2004 Non-Employee Director Restricted Stock Plan approved by shareholders in May 2004, and the related standing resolution adopted by the Board, each non-employee director automatically receives 8,000 shares of restricted stock when first elected to the Board and, if the director remains in office, an additional 2,500 restricted shares each following year. While on the Board, each non-employee director receives the same cash dividends on restricted shares as a holder of regular common stock, but the director is not allowed to sell the shares. The restricted shares may be forfeited if the director leaves the Board early.

32

Item 13.     Certain Relationships and Related Transactions, and Director Independence

Incorporated by reference to the portions entitled “Related Person Transactions and Procedures” and “Director Independence” of the section entitled “Corporate Governance” of the registrant’s 2018 Proxy Statement.

Item 14.     Principal Accounting Fees and Services

Incorporated by reference to the portion entitled “Audit Committee” of the section entitled “Corporate Governance” and the section entitled “Ratification of Independent Auditors” of the registrant’s 2018 Proxy Statement.

PART IV

Item 15.     Exhibits, Financial Statement Schedules

(a)       (1) and (2) Financial Statements:

           See Table of Contents of the Financial Section of this report.

(a)       (3) Exhibits:

           See Index to Exhibits of this report.

Item 16.     FORM 10-K SUMMARY

None.

33

FINANCIAL SECTION

TABLE OF CONTENTS
Business Profile	35
Financial Information	36
Frequently Used Terms	37
Quarterly Information	39
Management’s Discussion and Analysis of Financial Condition and Results of Operations
Functional Earnings	40
Forward-Looking Statements	40
Overview	40
Business Environment and Risk Assessment	41
Review of 2017 and 2016 Results	44
Liquidity and Capital Resources	47
Capital and Exploration Expenditures	51
Taxes	52
Environmental Matters	53
Market Risks, Inflation and Other Uncertainties	53
Recently Issued Accounting Standards	55
Critical Accounting Estimates	55
Management’s Report on Internal Control Over Financial Reporting	60
Report of Independent Registered Public Accounting Firm	61
Consolidated Financial Statements
Statement of Income	63
Statement of Comprehensive Income	64
Balance Sheet	65
Statement of Cash Flows	66
Statement of Changes in Equity	67
Notes to Consolidated Financial Statements
1. Summary of Accounting Policies	68
2. Accounting Changes	72
3. Miscellaneous Financial Information	73
4. Other Comprehensive Income Information	74
5. Cash Flow Information	75
6. Additional Working Capital Information	75
7. Equity Company Information	76
8. Investments, Advances and Long-Term Receivables	78
9. Property, Plant and Equipment and Asset Retirement Obligations	78
10. Accounting for Suspended Exploratory Well Costs	80
11. Leased Facilities	82
12. Earnings Per Share	83
13. Financial Instruments and Derivatives	83
14. Long-Term Debt	84
15. Incentive Program	85
16. Litigation and Other Contingencies	86
17. Pension and Other Postretirement Benefits	88
18. Disclosures about Segments and Related Information	96
19. Income and Other Taxes	99
20. Acquisitions	103
Supplemental Information on Oil and Gas Exploration and Production Activities	104
Operating Information	119

34

BUSINESS PROFILE

							Return on			Capital and
			Earnings After		Average Capital		Average Capital			Exploration
			Income Taxes		Employed		Employed			Expenditures
Financial			2017	2016	2017	2016	2017	2016		2017	2016
			(millions of dollars)				(percent)		(millions of dollars)
Upstream
	United States		6,622	(4,151)	64,896	62,114	10.2	(6.7)		3,716	3,518
	Non-U.S.		6,733	4,347	109,778	107,941	6.1	4.0		12,979	11,024
		Total	13,355	196	174,674	170,055	7.6	0.1		16,695	14,542
Downstream
	United States		1,948	1,094	7,936	7,573	24.5	14.4		823	839
	Non-U.S.		3,649	3,107	14,578	14,231	25.0	21.8		1,701	1,623
		Total	5,597	4,201	22,514	21,804	24.9	19.3		2,524	2,462
Chemical
	United States		2,190	1,876	10,672	9,018	20.5	20.8		1,583	1,553
	Non-U.S.		2,328	2,739	16,844	15,826	13.8	17.3		2,188	654
		Total	4,518	4,615	27,516	24,844	16.4	18.6		3,771	2,207
Corporate and financing			(3,760)	(1,172)	(2,073)	(4,477)	-	-		90	93
		Total	19,710	7,840	222,631	212,226	9.0	3.9		23,080	19,304

See Frequently Used Terms for a definition and calculation of capital employed and return on average capital employed.

Operating			2017	2016				2017	2016
		(thousands of barrels daily)					(thousands of barrels daily)
Net liquids production					Refinery throughput
	United States		514	494		United States		1,508	1,591
	Non-U.S.		1,769	1,871		Non-U.S.		2,783	2,678
		Total	2,283	2,365			Total	4,291	4,269
		(millions of cubic feet daily)					(thousands of barrels daily)
Natural gas production available for sale					Petroleum product sales (2)
	United States		2,936	3,078		United States		2,190	2,250
	Non-U.S.		7,275	7,049		Non-U.S.		3,340	3,232
		Total	10,211	10,127			Total	5,530	5,482
		(thousands of oil-equivalent barrels daily)					(thousands of metric tons)
Oil-equivalent production (1)			3,985	4,053	Chemical prime product sales(2) (3)
						United States		9,307	9,576
						Non-U.S.		16,113	15,349
							Total	25,420	24,925

(1)Gas converted to oil-equivalent at 6 million cubic feet = 1 thousand barrels.

(2)Petroleum product and chemical prime product sales data reported net of purchases/sales contracts with the same counterparty.

(3)Prime product sales are total product sales including ExxonMobil’s share of equity company volumes and finished-product transfers to the Downstream.

35

FINANCIAL INFORMATION

			2017	2016	2015	2014	2013
		(millions of dollars, except per share amounts)
Sales and other operating revenue (1)			237,162	200,628	239,854	367,647	393,039
Earnings
	Upstream		13,355	196	7,101	27,548	26,841
	Downstream		5,597	4,201	6,557	3,045	3,449
	Chemical		4,518	4,615	4,418	4,315	3,828
	Corporate and financing		(3,760)	(1,172)	(1,926)	(2,388)	(1,538)
	Net income attributable to ExxonMobil		19,710	7,840	16,150	32,520	32,580
Earnings per common share			4.63	1.88	3.85	7.60	7.37
Earnings per common share – assuming dilution			4.63	1.88	3.85	7.60	7.37
Cash dividends per common share			3.06	2.98	2.88	2.70	2.46
Earnings to average ExxonMobil share of equity (percent)			11.1	4.6	9.4	18.7	19.2
Working capital			(10,637)	(6,222)	(11,353)	(11,723)	(12,416)
Ratio of current assets to current liabilities (times)			0.82	0.87	0.79	0.82	0.83
Additions to property, plant and equipment			24,901	16,100	27,475	34,256	37,741
Property, plant and equipment, less allowances			252,630	244,224	251,605	252,668	243,650
Total assets			348,691	330,314	336,758	349,493	346,808
Exploration expenses, including dry holes			1,790	1,467	1,523	1,669	1,976
Research and development costs			1,063	1,058	1,008	971	1,044
Long-term debt			24,406	28,932	19,925	11,653	6,891
Total debt			42,336	42,762	38,687	29,121	22,699
Fixed-charge coverage ratio (times)			13.2	5.7	17.6	46.9	55.7
Debt to capital (percent)			17.9	19.7	18.0	13.9	11.2
Net debt to capital (percent) (2)			16.8	18.4	16.5	11.9	9.1
ExxonMobil share of equity at year-end			187,688	167,325	170,811	174,399	174,003
ExxonMobil share of equity per common share			44.28	40.34	41.10	41.51	40.14
Weighted average number of common shares
	outstanding (millions)		4,256	4,177	4,196	4,282	4,419
Number of regular employees at year-end (thousands) (3)			69.6	71.1	73.5	75.3	75.0
CORS employees not included above (thousands) (4)			1.6	1.6	2.1	8.4	9.8

(1)   Effective December 31, 2017, the Corporation revised its accounting policy election related to sales-based taxes. See Note 2 to the financial statements, Accounting Changes. As a result, Sales and other operating revenue excludes previously reported sales-based taxes of $17,980 million for 2016, $19,634 million for 2015, $26,458 million for 2014 and $27,797 million for 2013.

(2)   Debt net of cash, excluding restricted cash.

(3)   Regular employees are defined as active executive, management, professional, technical and wage employees who work full time or part time for the Corporation and are covered by the Corporation’s benefit plans and programs.

(4)   CORS employees are employees of company-operated retail sites.

36

FREQUENTLY USED TERMS

Listed below are definitions of several of ExxonMobil’s key business and financial performance measures. These definitions are provided to facilitate understanding of the terms and their calculation.

Cash Flow From Operations and Asset Sales

Cash flow from operations and asset sales is the sum of the net cash provided by operating activities and proceeds associated with sales of subsidiaries, property, plant and equipment, and sales and returns of investments from the Consolidated Statement of Cash Flows. This cash flow reflects the total sources of cash from both operating the Corporation’s assets and from the divesting of assets. The Corporation employs a long-standing and regular disciplined review process to ensure that all assets are contributing to the Corporation’s strategic objectives. Assets are divested when they are no longer meeting these objectives or are worth considerably more to others. Because of the regular nature of this activity, we believe it is useful for investors to consider proceeds associated with asset sales together with cash provided by operating activities when evaluating cash available for investment in the business and financing activities, including shareholder distributions.

Cash flow from operations and asset sales		2017	2016	2015
		(millions of dollars)
Net cash provided by operating activities		30,066	22,082	30,344
Proceeds associated with sales of subsidiaries, property, plant and equipment,
	and sales and returns of investments	3,103	4,275	2,389
	Cash flow from operations and asset sales	33,169	26,357	32,733

Capital Employed

Capital employed is a measure of net investment. When viewed from the perspective of how the capital is used by the businesses, it includes ExxonMobil’s net share of property, plant and equipment and other assets less liabilities, excluding both short-term and long-term debt. When viewed from the perspective of the sources of capital employed in total for the Corporation, it includes ExxonMobil’s share of total debt and equity. Both of these views include ExxonMobil’s share of amounts applicable to equity companies, which the Corporation believes should be included to provide a more comprehensive measure of capital employed.

Capital employed		2017	2016	2015
		(millions of dollars)
Business uses: asset and liability perspective
Total assets		348,691	330,314	336,758
Less liabilities and noncontrolling interests share of assets and liabilities
	Total current liabilities excluding notes and loans payable	(39,841)	(33,808)	(35,214)
	Total long-term liabilities excluding long-term debt	(72,014)	(79,914)	(86,047)
	Noncontrolling interests share of assets and liabilities	(8,298)	(8,031)	(8,286)
Add ExxonMobil share of debt-financed equity company net assets		3,929	4,233	4,447
	Total capital employed	232,467	212,794	211,658
Total corporate sources: debt and equity perspective
Notes and loans payable		17,930	13,830	18,762
Long-term debt		24,406	28,932	19,925
ExxonMobil share of equity		187,688	167,325	170,811
Less noncontrolling interests share of total debt		(1,486)	(1,526)	(2,287)
Add ExxonMobil share of equity company debt		3,929	4,233	4,447
	Total capital employed	232,467	212,794	211,658

37

FREQUENTLY USED TERMS

Return on Average Capital Employed

Return on average capital employed (ROCE) is a performance measure ratio. From the perspective of the business segments, ROCE is annual business segment earnings divided by average business segment capital employed (average of beginning and end-of-year amounts). These segment earnings include ExxonMobil’s share of segment earnings of equity companies, consistent with our capital employed definition, and exclude the cost of financing. The Corporation’s total ROCE is net income attributable to ExxonMobil excluding the after-tax cost of financing, divided by total corporate average capital employed. The Corporation has consistently applied its ROCE definition for many years and views it as the best measure of historical capital productivity in our capital-intensive, long-term industry, both to evaluate management’s performance and to demonstrate to shareholders that capital has been used wisely over the long term. Additional measures, which are more cash flow based, are used to make investment decisions.

Return on average capital employed				2017	2016	2015
				(millions of dollars)
Net income attributable to ExxonMobil				19,710	7,840	16,150
Financing costs (after tax)
	Gross third-party debt			(709)	(683)	(362)
	ExxonMobil share of equity companies			(204)	(225)	(170)
	All other financing costs – net			515	423	88
		Total financing costs		(398)	(485)	(444)
			Earnings excluding financing costs	20,108	8,325	16,594
Average capital employed				222,631	212,226	208,755
Return on average capital employed – corporate total				9.0%	3.9%	7.9%

38

QUARTERLY INFORMATION

		2017					2016
		First	Second	Third	Fourth		First	Second	Third	Fourth
		Quarter	Quarter	Quarter	Quarter	Year	Quarter	Quarter	Quarter	Quarter	Year
Volumes
Production of crude oil,		(thousands of barrels daily)
	natural gas liquids,	2,333	2,269	2,280	2,251	2,283	2,538	2,330	2,211	2,384	2,365
	synthetic oil and bitumen
Refinery throughput		4,324	4,345	4,287	4,207	4,291	4,185	4,152	4,365	4,371	4,269
Petroleum product sales (1)		5,395	5,558	5,542	5,624	5,530	5,334	5,500	5,585	5,506	5,482
Natural gas production		(millions of cubic feet daily)
	available for sale	10,908	9,920	9,585	10,441	10,211	10,724	9,762	9,601	10,424	10,127
		(thousands of oil-equivalent barrels daily)
Oil-equivalent production (2)		4,151	3,922	3,878	3,991	3,985	4,325	3,957	3,811	4,121	4,053
		(thousands of metric tons)
Chemical prime product sales (1)		6,072	6,120	6,446	6,782	25,420	6,173	6,310	6,133	6,309	24,925
Summarized financial data
Sales and other operating		(millions of dollars)
	revenue (3)	56,474	56,026	59,350	65,312	237,162	43,032	51,714	52,123	53,759	200,628
Gross profit (4)		13,751	12,773	14,704	13,696	54,924	9,999	11,687	11,774	8,762	42,222
Net income attributable to
	ExxonMobil (5)	4,010	3,350	3,970	8,380	19,710	1,810	1,700	2,650	1,680	7,840
Per share data		(dollars per share)
Earnings per common share (6)		0.95	0.78	0.93	1.97	4.63	0.43	0.41	0.63	0.41	1.88
Earnings per common share
	– assuming dilution (6)	0.95	0.78	0.93	1.97	4.63	0.43	0.41	0.63	0.41	1.88
Dividends per common share		0.75	0.77	0.77	0.77	3.06	0.73	0.75	0.75	0.75	2.98
Common stock prices
	High	91.34	83.69	82.49	84.36	91.34	85.10	93.83	95.55	93.22	95.55
	Low	80.31	79.26	76.05	80.01	76.05	71.55	81.99	82.29	82.76	71.55

(1)   Petroleum product and chemical prime product sales data reported net of purchases/sales contracts with the same counterparty.

(2)   Gas converted to oil-equivalent at 6 million cubic feet = 1 thousand barrels.

(3)   Effective December 31, 2017, the Corporation revised its accounting policy election related to sales-based taxes. See Note 2 to the financial statements, Accounting Changes. As a result, Sales and other operating revenue excludes previously reported sales-based taxes of $4,616 million for first quarter 2017, $4,799 million for second quarter 2017, $5,065 million for third quarter 2017, $4,073 million for first quarter 2016, $4,646 million for second quarter 2016, $4,644 million for third quarter 2016, $4,617 million for fourth quarter 2016, and $17,980 million for the year 2016.

(4)   Gross profit equals sales and other operating revenue less estimated costs associated with products sold. Effective December 31, 2017, the Corporation revised its accounting policy election related to sales-based taxes, which reduced previously reported gross profit by the amounts shown in note (3) above. See Note 2 to the financial statements, Accounting Changes.

(5)   Fourth quarter 2017 included a U.S. tax reform impact of $5,942 million and an impairment charge of $1,294 million. Fourth quarter 2016 included an impairment charge of $2,135 million.

(6)   Computed using the average number of shares outstanding during each period. The sum of the four quarters may not add to the full year.

The intraday price range of ExxonMobil common stock is as reported on the composite tape of the several U.S. exchanges where ExxonMobil common stock is traded. The principal market where ExxonMobil common stock (XOM) is traded is the New York Stock Exchange, although the stock is traded on other exchanges in and outside the United States.

There were 386,892 registered shareholders of ExxonMobil common stock at December 31, 2017. At January 31, 2018, the registered shareholders of ExxonMobil common stock numbered 384,745.

On January 31, 2018, the Corporation declared a $0.77 dividend per common share, payable March 9, 2018.

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

FUNCTIONAL EARNINGS			2017	2016	2015
			(millions of dollars, except per share amounts)
Earnings (U.S. GAAP)
Upstream
	United States		6,622	(4,151)	(1,079)
	Non-U.S.		6,733	4,347	8,180
Downstream
	United States		1,948	1,094	1,901
	Non-U.S.		3,649	3,107	4,656
Chemical
	United States		2,190	1,876	2,386
	Non-U.S.		2,328	2,739	2,032
Corporate and financing			(3,760)	(1,172)	(1,926)
		Net income attributable to ExxonMobil (U.S. GAAP)	19,710	7,840	16,150
Earnings per common share			4.63	1.88	3.85
Earnings per common share – assuming dilution			4.63	1.88	3.85

References in this discussion to total corporate earnings mean net income attributable to ExxonMobil (U.S. GAAP) from the consolidated income statement. Unless otherwise indicated, references to earnings, Upstream, Downstream, Chemical and Corporate and financing segment earnings, and earnings per share are ExxonMobil’s share after excluding amounts attributable to noncontrolling interests.

FORWARD-LOOKING STATEMENTS

Statements in this discussion regarding expectations, plans and future events or conditions are forward-looking statements. Actual future financial and operating results or conditions, including demand growth and energy source mix; government policies relating to climate change; project plans, capacities, schedules and costs; production growth and mix; rates of field decline; asset carrying values; proved reserves; financing sources; the resolution of contingencies and uncertain tax positions; and environmental and capital expenditures; could differ materially depending on a number of factors, such as changes in the supply of and demand for crude oil, natural gas, and petroleum and petrochemical products and resulting price impacts; the outcome of commercial negotiations; the impact of fiscal and commercial terms; political or regulatory events; the outcome of exploration and development projects, and other factors discussed herein and in Item 1A. Risk Factors.

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.

OVERVIEW

The following discussion and analysis of ExxonMobil’s financial results, as well as the accompanying financial statements and related notes to consolidated financial statements to which they refer, are the responsibility of the management of Exxon Mobil Corporation. The Corporation’s accounting and financial reporting fairly reflect its straightforward business model involving the extracting, manufacturing and marketing of hydrocarbons and hydrocarbon-based products. The Corporation’s business model involves the production (or purchase), manufacture and sale of physical products, and all commercial activities are directly in support of the underlying physical movement of goods.

ExxonMobil, with its resource base, financial strength, disciplined investment approach and technology portfolio, is well‑positioned to participate in substantial investments to develop new energy supplies. The company’s integrated business model, with significant investments in Upstream, Downstream and Chemical segments, reduces the Corporation’s risk from changes in commodity prices. While commodity prices are volatile on a short-term basis and depend on supply and demand, ExxonMobil’s investment decisions are based on our long-term business outlook, using a disciplined approach in selecting and pursuing the most attractive investment opportunities. The corporate plan is a fundamental annual management process that is the basis for setting near-term operating and capital objectives in addition to providing the longer-term economic assumptions used for investment evaluation purposes. Volumes are based on individual field production profiles, which are also updated annually. Price ranges for crude oil, natural gas, refined products, and chemical products are based on corporate plan assumptions developed annually by major region and are utilized for investment evaluation purposes. Major investment opportunities are evaluated over a range of economic scenarios. Once major investments are made, a reappraisal process is completed to ensure relevant lessons are learned and improvements are incorporated into future projects.

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

BUSINESS ENVIRONMENT AND RISK ASSESSMENT

Long-Term Business Outlook

The basis for the Long‑Term Business Outlook is the Corporation’s annual Outlook for Energy, which is used to help inform our long‑term business strategies and investment plans. By 2040, the world’s population is projected to grow to approximately 9.2 billion people, or about 1.7 billion more than in 2016. Coincident with this population increase, the Corporation expects worldwide economic growth to average close to 3 percent per year. As economies and populations grow, and as living standards improve for billions of people, the need for energy will continue to rise. Even with significant efficiency gains, global energy demand is projected to rise by about 25 percent from 2016 to 2040. This demand increase is expected to be concentrated in developing countries (i.e., those that are not member nations of the Organisation for Economic Co‑operation and Development).

As expanding prosperity drives global energy demand higher, increasing use of energy‑efficient technologies and practices as well as lower-emission fuels will continue to help significantly reduce energy consumption and emissions per unit of economic output over time. Substantial efficiency gains are likely in all key aspects of the world’s economy through 2040, affecting energy requirements for transportation, power generation, industrial applications, and residential and commercial needs.

Energy for transportation – including cars, trucks, ships, trains and airplanes – is expected to increase by about 30 percent from 2016 to 2040. The growth in transportation energy demand is likely to account for approximately 60 percent of the growth in liquid fuels demand worldwide over this period, even as liquids demand for light-duty vehicles is relatively flat to 2040, reflecting the impact of better fleet fuel economy and significant growth in electric cars over the period. Nearly all the world’s transportation fleets are likely to continue to run on liquid fuels, which are abundant, widely available, easy to transport, and provide a large quantity of energy in small volumes.

Demand for electricity around the world is likely to increase approximately 60 percent from 2016 to 2040, with developing countries accounting for about 85 percent of the increase. Consistent with this projection, power generation is expected to remain the largest and fastest‑growing major segment of global primary energy demand. Meeting the expected growth in power demand will require a diverse set of energy sources. The share of coal‑fired generation is likely to decline substantially and approach 25 percent of the world’s electricity in 2040, versus nearly 40 percent in 2016, in part as a result of policies to improve air quality as well as reduce greenhouse gas emissions to address the risks of climate change. From 2016 to 2040, the amount of electricity supplied using natural gas, nuclear power, and renewables is likely to nearly double, and account for about 95 percent of the growth in electricity supplies. Renewables in total, led by wind and solar, will account for about half of the increase in electricity supplies worldwide over the period to 2040, reaching nearly 35 percent of global electricity supplies by 2040. Natural gas and nuclear will also gain share over the period to 2040, reaching about 25 percent and 12 percent of global electricity supplies respectively by 2040. Supplies of electricity by energy type will reflect significant differences across regions reflecting a wide range of factors including the cost and availability of various energy supplies.

Liquid fuels provide the largest share of global energy supplies today reflecting broad-based availability, affordability, ease of distribution, and fitness as a practical solution to meet a wide variety of needs. By 2040, global demand for liquid fuels is projected to grow to approximately 118 million barrels of oil‑equivalent per day, an increase of about 20 percent from 2016. Much of this demand today is met by crude production from traditional conventional sources; these supplies will remain important as significant development activity is expected to offset much of the natural declines from these fields. At the same time, a variety of emerging supply sources – including tight oil, deepwater, oil sands, natural gas liquids and biofuels – are expected to grow to help meet rising demand. The world’s resource base is sufficient to meet projected demand through 2040 as technology advances continue to expand the availability of economic supply options. However, access to resources and timely investments will remain critical to meeting global needs with reliable, affordable supplies.

Natural gas is a versatile fuel, suitable for a wide variety of applications, and it is expected to grow the most of any primary energy type from 2016 to 2040, meeting more than 35 percent of global energy demand growth. Global natural gas demand is expected to rise nearly 40 percent from 2016 to 2040, with about 45 percent of that increase in the Asia Pacific region. Helping meet these needs will be significant growth in supplies of unconventional gas ‑ the natural gas found in shale and other rock formations that was once considered uneconomic to produce. In total, about 55 percent of the growth in natural gas supplies is expected to be from unconventional sources. At the same time, conventionally-produced natural gas is likely to remain the cornerstone of supply, meeting about two‑thirds of global demand in 2040. Worldwide liquefied natural gas (LNG) trade will expand significantly, meeting about one-third of the increase in demand growth, with much of this supply expected to help meet rising demand in Asia Pacific.

The world’s energy mix is highly diverse and will remain so through 2040. Oil is expected to remain the largest source of energy with its share remaining close to one‑third in 2040. Coal is currently the second largest source of energy, but it is likely to lose that position to natural gas in the 2020-2025 timeframe. The share of natural gas is expected to reach 25 percent by 2040, while the share of coal falls to about 20 percent. Nuclear power is projected to grow significantly, as many nations are likely to expand nuclear capacity to address rising electricity needs as well as energy security and environmental issues. Total renewable energy is likely to exceed 15 percent of global energy by 2040, with biomass, hydro and geothermal contributing a combined share of more

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

than 10 percent. Total energy supplied from wind, solar and biofuels is expected to increase rapidly, growing nearly 250 percent from 2016 to 2040, when they will be about 5 percent of world energy.

The Corporation anticipates that the world’s available oil and gas resource base will grow not only from new discoveries, but also from reserve increases in previously discovered fields. Technology will underpin these increases. The cost to develop and supply these resources will be significant. According to the International Energy Agency’s World Energy Outlook 2017, the investment required to meet oil and natural gas supply requirements worldwide over the period 2017‑2040 will be about $21 trillion (New Policies Scenario, measured in 2016 dollars) or approximately $860 billion per year on average.

International accords and underlying regional and national regulations covering greenhouse gas emissions continue to evolve with uncertain timing and outcome, making it difficult to predict their business impact. For many years, the Corporation has taken into account policies established to reduce energy‑related greenhouse gas emissions in its long-term Outlook for Energy. The climate accord reached at the Conference of the Parties (COP 21) in Paris set many new goals, and many related policies are still emerging. Our Outlook  reflects an environment with increasingly stringent climate policies and is consistent with the aggregation of Nationally Determined Contributions which were submitted by signatories to the United Nations Framework Convention on Climate Change (UNFCCC) 2015 Paris Agreement. Our Outlook  seeks to identify potential impacts of climate‑related policies, which often target specific sectors, by using various assumptions and tools including application of a proxy cost of carbon to estimate potential impacts on consumer demands. For purposes of the Outlook, a proxy cost on energy-related CO₂ emissions is assumed to reach about $80 per tonne on average in 2040 in OECD nations. China and other leading non-OECD nations are expected to trail OECD policy initiatives. Nevertheless, as people and nations look for ways to reduce risks of global climate change, they will continue to need practical solutions that do not jeopardize the affordability or reliability of the energy they need.

Practical solutions to the world’s energy and climate challenges will benefit from market competition as well as well‑informed, well‑designed, and transparent policy approaches that carefully weigh costs and benefits. Such policies are likely to help manage the risks of climate change while also enabling societies to pursue other high priority goals around the world – including clean air and water, access to reliable, affordable energy, and economic progress for all people. All practical and economically‑viable energy sources, both conventional and unconventional, will need to be pursued to continue meeting global energy demand, recognizing the scale and variety of worldwide energy needs as well as the importance of expanding access to modern energy to promote better standards of living for billions of people.

The information provided in the Long‑Term Business Outlook includes ExxonMobil’s internal estimates and forecasts based upon internal data and analyses as well as publicly available information from external sources including the International Energy Agency.

Upstream

ExxonMobil continues to maintain a diverse portfolio of exploration and development opportunities, which enables the Corporation to be selective, maximizing shareholder value and mitigating political and technical risks. ExxonMobil’s fundamental Upstream business strategies guide our global exploration, development, production, and gas and power marketing activities. These strategies include capturing material and accretive opportunities to continually high-grade the resource portfolio, selectively developing attractive oil and natural gas resources, developing and applying high-impact technologies, and pursuing productivity and efficiency gains. These strategies are underpinned by a relentless focus on operational excellence, development of our employees, and investment in the communities within which we operate.

As future development projects and drilling activities bring new production online, the Corporation expects a shift in the geographic mix and in the type of opportunities from which volumes are produced. Oil equivalent production from North America is expected to increase over the next several years based on current investment plans, contributing over a third of total production. Further, the proportion of our global production from resource types utilizing specialized technologies such as unconventional drilling and production systems, LNG, deepwater, and arctic, is a majority of production and is expected to grow over the next few years. We do not anticipate that the expected change in the geographic mix of production volumes, and in the types of opportunities from which volumes will be produced, will have a material impact on the nature and the extent of the risks disclosed in Item 1A. Risk Factors, or result in a material change in our level of unit operating expenses.

The Corporation anticipates several projects will come online over the next few years providing additional production capacity. However, actual volumes will vary from year to year due to the timing of individual project start-ups; operational outages; reservoir performance; performance of enhanced oil recovery projects; regulatory changes; the impact of fiscal and commercial terms; asset sales; weather events; price effects on production sharing contracts; changes in the amount and timing of capital investments that may vary depending on the oil and gas price environment; and other factors described in Item 1A. Risk Factors.

The upstream industry environment continued to recover in 2017 as crude oil prices increased in response to tighter supply and higher demand; gas prices also improved with increasing demand, particularly in Asia. The markets for crude oil and natural gas have a history of significant price volatility. ExxonMobil believes prices over the long term will continue to be driven by market supply and demand, with the demand side largely being a function of general economic activities and levels of prosperity. On the

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

supply side, prices may be significantly impacted by political events, the actions of OPEC and other large government resource owners, and other factors. To manage the risks associated with price, ExxonMobil evaluates annual plans and major investments across a range of price scenarios.

In 2017, our Upstream business produced 4 million oil‑equivalent barrels per day. During the year, we added over 200,000 oil‑equivalent barrels per day of gross production capacity through project start‑ups in Eastern Canada (Hebron) and at our Sakhalin‑1 operation in Russia (Odoptu Stage 2). We added 2.7 billion oil‑equivalent barrels of proved reserves, reflecting a 183 percent replacement of 2017 production. We also made strategic acquisitions in Papua New Guinea, Mozambique, and U.S. tight oil, and continued to have exploration success in Guyana.

Downstream

ExxonMobil’s Downstream is a large, diversified business with refining, logistics, and marketing complexes around the world. The Corporation has a presence in mature markets in North America and Europe, as well as in the growing Asia Pacific region.

ExxonMobil’s fundamental Downstream business strategies competitively position the company across a range of market conditions. These strategies include targeting best‑in‑class operations in all aspects of the business, maximizing value from advanced technologies, capitalizing on integration across ExxonMobil businesses, selectively investing for resilient, advantaged returns, operating efficiently and effectively, and providing quality, valued and differentiated products and services to customers.

ExxonMobil’s operating results, as noted in Item 2. Properties, reflect 22 refineries, located in 14 countries, with distillation capacity of 4.9 million barrels per day and lubricant basestock manufacturing capacity of 125 thousand barrels per day. ExxonMobil’s fuels and lubes value chains have significant global reach, with multiple channels to market serving a diverse customer base. Our portfolio of world-renowned brands includes Exxon, Mobil, Esso  and Mobil 1.  

Demand growth remained strong in 2017, and margins strengthened during the year drawing on previous high inventories, particularly in North America due to Latin American demand and hurricane related refinery outages. North American refineries also benefited from cost‑competitive feedstock and energy supplies as the differential between Brent and WTI widened. Margins in Europe and Asia strengthened versus 2016, with rising Asia demand and economic growth in Europe. In the near term, we see variability in refining margins, with some regions seeing weaker margins as new capacity additions are expected to outpace growth in global demand for our products, which can also be affected by global economic conditions and regulatory changes.

Refining margins are largely driven by differences in commodity prices and are a function of the difference between what a refinery pays for its raw materials (primarily crude oil) and the market prices for the range of products produced (primarily gasoline, heating oil, diesel oil, jet fuel and fuel oil). Crude oil and many products are widely traded with published prices, including those quoted on multiple exchanges around the world (e.g., New York Mercantile Exchange and Intercontinental Exchange). Prices for these commodities are determined by the global marketplace and are influenced by many factors, including global and regional supply/demand balances, inventory levels, industry refinery operations, import/export balances, currency fluctuations, seasonal demand, weather, and political climate.

ExxonMobil’s long‑term outlook is that industry refining margins will remain subject to intense competition as new capacity additions outpace the growth in global demand. ExxonMobil’s integration across the value chain, from refining to marketing, enhances overall value in both fuels and lubricants businesses.

As described in more detail in Item 1A. Risk Factors, proposed carbon policy and other climate‑related regulations in many countries, as well as the continued growth in biofuels mandates, could have negative impacts on the Downstream business.

In the fuels marketing business, margins remained relatively flat in 2017. In 2017, ExxonMobil expanded its branded retail site network and progressed the multi‑year transition of the direct served (i.e., dealer, company‑operated) retail network in portions of Europe to a more capital‑efficient Branded Wholesaler model. The company’s lubricants business continues to grow, leveraging world‑class brands and integration with industry‑leading basestock refining capability. ExxonMobil remains a market leader in the high‑value synthetic lubricants sector, despite increasing competition.

The Downstream portfolio is continually evaluated during all parts of the business cycle, and numerous asset divestments have been made over the past decade. When investing in the Downstream, ExxonMobil remains focused on selective and resilient projects. At the end of 2017, construction was nearly complete on a new delayed coker unit at the refinery in Antwerp, Belgium, to upgrade low‑value bunker fuel into higher value diesel products. Construction also progressed on a proprietary hydrocracker at the refinery in Rotterdam, Netherlands, to produce higher value ultra-low sulfur diesel and Group II basestocks. In addition, an expansion in Singapore is underway to support demand growth for finished lubricants in key markets. Finally, ExxonMobil announced plans to increase production of ultra-low sulfur fuels at the Beaumont, Texas, refinery by approximately 40,000 barrels per day.

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Chemical

Worldwide petrochemical demand remained strong in 2017, led by growing demand from Asia Pacific manufacturers of industrial and consumer products. North America continued to benefit from abundant supplies of natural gas and gas liquids, providing both low‑cost feedstock and energy. Specialty product margins moderated in 2017 with capacity additions exceeding demand growth.

ExxonMobil sustained its competitive advantage through continued operational excellence, investment and cost discipline, a balanced portfolio of products, and integration with refining and upstream operations, all underpinned by proprietary technology.

In 2017, we completed start‑up of the polyethylene derivative lines in Mont Belvieu, Texas, and the adhesion hydrocarbon resin plant in Singapore. Construction continued on major expansions at our Texas facilities, including a new world-scale ethane cracker in Baytown and expansion of the polyethylene plant in Beaumont, to capitalize on low-cost feedstock and energy supplies in North America and to meet rapidly growing demand for premium polymers. The company also continued construction on the specialty elastomers plant expansion in Newport, Wales, with start‑up anticipated in 2018. Construction of a new halobutyl rubber unit also progressed in Singapore to further extend our specialty product capacity in Asia Pacific. In addition, the company completed the acquisition of a petrochemical plant from Jurong Aromatics Corporation, to complement the existing petrochemical complex in Singapore and meet growing demand for chemicals products in Asia Pacific.

REVIEW OF 2017 AND 2016 RESULTS
	2017	2016	2015
	(millions of dollars)
Earnings (U.S. GAAP)
Net income attributable to ExxonMobil (U.S. GAAP)	19,710	7,840	16,150

Upstream
			2017	2016	2015
			(millions of dollars)
Upstream
	United States		6,622	(4,151)	(1,079)
	Non-U.S.		6,733	4,347	8,180
		Total	13,355	196	7,101

2017

Upstream earnings were $13,355 million, up $13,159 million from 2016. Higher realizations increased earnings by $5.3 billion. Unfavorable volume and mix effects decreased earnings by $440 million. All other items increased earnings by $8.3 billion, primarily due to the $7.1 billion non‑cash impact from U.S. tax reform, lower asset impairments of $659 million, lower expenses, and gains from asset management activity. On an oil‑equivalent basis, production of 4 million barrels per day was down 2 percent compared to 2016. Liquids production of 2.3 million barrels per day decreased 82,000 barrels per day as field decline and lower entitlements were partly offset by increased project volumes and work programs. Natural gas production of 10.2 billion cubic feet per day increased 84 million cubic feet per day from 2016 as project ramp‑up, primarily in Australia, was partly offset by field decline and regulatory restrictions in the Netherlands. U.S. Upstream earnings were $6,622 million in 2017, including $7.6 billion of U.S. tax reform benefits and asset impairments of $521 million. Non‑U.S. Upstream earnings were $6,733 million, including asset impairments of $983 million and unfavorable impacts of $480 million from U.S. tax reform.

2016

Upstream earnings were $196 million in 2016 and included asset impairment charges of $2,163 million mainly relating to dry gas operations with undeveloped acreage in the Rocky Mountains region of the U.S. Earnings were down $6,905 million from 2015. Lower realizations decreased earnings by $5.3 billion. Favorable volume and mix effects increased earnings by $130 million. The impairment charges reduced earnings by $2.2 billion. All other items increased earnings by $440 million, primarily due to lower expenses partly offset by the absence of favorable tax items from the prior year. On an oil equivalent basis, production of 4.1 million barrels per day was down slightly compared to 2015. Liquids production of 2.4 million barrels per day increased 20,000 barrels per day with increased project volumes, mainly in Canada, Indonesia and Nigeria, partly offset by field decline, the impact from Canadian wildfires, and downtime notably in Nigeria. Natural gas production of 10.1 billion cubic feet per day decreased 388 million cubic feet per day from 2015 as field decline, regulatory restrictions in the Netherlands and divestments were partly offset by higher project volumes and work programs. U.S. Upstream earnings declined $3,072 million from 2015 to a loss of $4,151 million, and included impairment charges of $2,163 million. Earnings outside the U.S. were $4,347 million, down $3,833 million from the prior year.

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Upstream Additional Information
		2017	2016
		(thousands of barrels daily)
Volumes Reconciliation (Oil-equivalent production) (1)
Prior Year		4,053	4,097
	Entitlements - Net Interest	-	9
	Entitlements - Price / Spend / Other	(62)	(23)
	Quotas	-	-
	Divestments	(15)	(34)
	Growth / Other	9	4
Current Year		3,985	4,053
(1) Gas converted to oil-equivalent at 6 million cubic feet = 1 thousand barrels.

Listed below are descriptions of ExxonMobil’s volumes reconciliation factors which are provided to facilitate understanding of the terms.

Entitlements - Net Interest are changes to ExxonMobil’s share of production volumes caused by non-operational changes to volume‑determining factors. These factors consist of net interest changes specified in Production Sharing Contracts (PSCs) which typically occur when cumulative investment returns or production volumes achieve defined thresholds, changes in equity upon achieving pay-out in partner investment carry situations, equity redeterminations as specified in venture agreements, or as a result of the termination or expiry of a concession. Once a net interest change has occurred, it typically will not be reversed by subsequent events, such as lower crude oil prices.

Entitlements - Price, Spend and Other are changes to ExxonMobil’s share of production volumes resulting from temporary changes to non-operational volume-determining factors. These factors include changes in oil and gas prices or spending levels from one period to another. According to the terms of contractual arrangements or government royalty regimes, price or spending variability can increase or decrease royalty burdens and/or volumes attributable to ExxonMobil. For example, at higher prices, fewer barrels are required for ExxonMobil to recover its costs. These effects generally vary from period to period with field spending patterns or market prices for oil and natural gas. Such factors can also include other temporary changes in net interest as dictated by specific provisions in production agreements.

Quotas are changes in ExxonMobil’s allowable production arising from production constraints imposed by countries which are members of the Organization of the Petroleum Exporting Countries (OPEC). Volumes reported in this category would have been readily producible in the absence of the quota.

Divestments are reductions in ExxonMobil’s production arising from commercial arrangements to fully or partially reduce equity in a field or asset in exchange for financial or other economic consideration.

Growth and Other factors comprise all other operational and non-operational factors not covered by the above definitions that may affect volumes attributable to ExxonMobil. Such factors include, but are not limited to, production enhancements from project and work program activities, acquisitions including additions from asset exchanges, downtime, market demand, natural field decline, and any fiscal or commercial terms that do not affect entitlements.

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Downstream
			2017	2016	2015
			(millions of dollars)
Downstream
	United States		1,948	1,094	1,901
	Non-U.S.		3,649	3,107	4,656
		Total	5,597	4,201	6,557

2017

Downstream earnings of $5,597 million increased $1,396 million from 2016. Stronger refining and marketing margins increased earnings by $1.5 billion, while volume and mix effects decreased earnings by $30 million. All other items decreased earnings by $40 million, driven by the absence of a $904 million gain from the Canadian retail assets sale, and Hurricane Harvey related expenses, which were mostly offset by $618 million of U.S. tax reform impacts and non‑U.S. asset management gains in the current year. Petroleum product sales of 5.5 million barrels per day were 48,000 barrels per day higher than 2016. Earnings from the U.S. Downstream were $1,948 million, including favorable U.S. tax reform impacts of $618 million. Non‑U.S. Downstream earnings were $3,649 million, compared to $3,107 million in the prior year.

2016

Downstream earnings of $4,201 million decreased $2,356 million from 2015. Weaker refining and marketing margins decreased earnings by $3.8 billion, while volume and mix effects increased earnings by $560 million. All other items increased earnings by $920 million, mainly reflecting gains from divestments, notably in Canada. Petroleum product sales of 5.5 million barrels per day were 272,000 barrels per day lower than 2015 mainly reflecting the divestment of refineries in California and Louisiana. U.S. Downstream earnings were $1,094 million, a decrease of $807 million from 2015. Non-U.S. Downstream earnings were $3,107 million, down $1,549 million from the prior year.

Chemical
			2017	2016	2015
			(millions of dollars)
Chemical
	United States		2,190	1,876	2,386
	Non-U.S.		2,328	2,739	2,032
		Total	4,518	4,615	4,418

2017

Chemical earnings of $4,518 million decreased $97 million from 2016. Weaker margins decreased earnings by $260 million. Volume and mix effects increased earnings by $100 million. All other items increased earnings by $60 million, primarily due to U.S. tax reform of $335 million and improved inventory effects, partially offset by higher expenses from increased turnaround activity and new business growth. Prime product sales of 25.4 million metric tons were up 495,000 metric tons from 2016. U.S. Chemical earnings were $2,190 million in 2017, including favorable U.S. tax reform impacts of $335 million. Non‑U.S. Chemical earnings of $2,328 million were $411 million lower than prior year.

2016

Chemical earnings of $4,615 million increased $197 million from 2015. Stronger margins increased earnings by $440 million. Favorable volume and mix effects increased earnings by $100 million. All other items decreased earnings by $340 million, primarily due to the absence of U.S. asset management gains. Prime product sales of 24.9 million metric tons were up 212,000 metric tons from 2015. U.S. Chemical earnings were $1,876 million, down $510 million from 2015 reflecting the absence of asset management gains. Non-U.S. Chemical earnings of $2,739 million were $707 million higher than the prior year.

46

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Corporate and Financing
	2017	2016	2015
	(millions of dollars)
Corporate and financing	(3,760)	(1,172)	(1,926)

2017

Corporate and financing expenses were $3,760 million in 2017 compared to $1,172 million in 2016, with the increase mainly due to unfavorable impacts of $2.1 billion from U.S. tax reform and the absence of favorable non-U.S. tax items.

2016

Corporate and financing expenses of $1,172 million in 2016 were $754 million lower than 2015 mainly reflecting favorable non‑U.S. tax items.

LIQUIDITY AND CAPITAL RESOURCES
Sources and Uses of Cash
		2017	2016	2015
		(millions of dollars)
Net cash provided by/(used in)
	Operating activities	30,066	22,082	30,344
	Investing activities	(15,730)	(12,403)	(23,824)
	Financing activities	(15,130)	(9,293)	(7,037)
Effect of exchange rate changes		314	(434)	(394)
Increase/(decrease) in cash and cash equivalents		(480)	(48)	(911)
		(December 31)
Total cash and cash equivalents		3,177	3,657	3,705

Total cash and cash equivalents were $3.2 billion at the end of 2017, down $0.5 billion from the prior year. The major sources of funds in 2017 were net income including noncontrolling interests of $19.8 billion, the adjustment for the noncash provision of $19.9 billion for depreciation and depletion, proceeds from asset sales of $3.1 billion, and other investing activities including collection of advances of $2.1 billion. The major uses of funds included spending for additions to property, plant and equipment of $15.4 billion, dividends to shareholders of $13.0 billion, the adjustment for noncash deferred income tax credits of $8.6 billion, and additional investments and advances of $5.5 billion.

Total cash and cash equivalents were $3.7 billion at the end of 2016, essentially in line with the prior year. The major sources of funds in 2016 were net income including noncontrolling interests of $8.4 billion, the adjustment for the noncash provision of $22.3 billion for depreciation and depletion, proceeds from asset sales of $4.3 billion, and a net debt increase of $4.3 billion. The major uses of funds included spending for additions to property, plant and equipment of $16.2 billion, dividends to shareholders of $12.5 billion, the adjustment for noncash deferred income tax credits of $4.4 billion, and a change in working capital, excluding cash and debt, of $1.4 billion.

The Corporation has access to significant capacity of long-term and short-term liquidity. Internally generated funds are generally expected to cover financial requirements, supplemented by short-term and long-term debt as required. On December 31, 2017, the Corporation had unused committed short-term lines of credit of $5.4 billion and unused committed long-term lines of credit of $0.2 billion. Cash that may be temporarily available as surplus to the Corporation’s immediate needs is carefully managed through counterparty quality and investment guidelines to ensure it is secure and readily available to meet the Corporation’s cash requirements, and to optimize returns.

To support cash flows in future periods the Corporation will need to continually find or acquire and develop new fields, and continue to develop and apply new technologies and recovery processes to existing fields, in order to maintain or increase production. After a period of production at plateau rates, it is the nature of oil and gas fields eventually to produce at declining rates for the remainder of their economic life. Averaged over all the Corporation’s existing oil and gas fields and without new projects, ExxonMobil’s production is expected to decline at an average of approximately 3 percent per year over the next few years. Decline rates can vary widely by individual field due to a number of factors, including, but not limited to, the type of reservoir, fluid properties, recovery mechanisms, work activity, and age of the field. Furthermore, the Corporation’s net interest in production for individual fields can vary with price and the impact of fiscal and commercial terms.

47

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The Corporation has long been successful at offsetting the effects of natural field decline through disciplined investments in quality opportunities and project execution. The Corporation anticipates several projects will come online over the next few years providing additional production capacity. However, actual volumes will vary from year to year due to the timing of individual project start‑ups; operational outages; reservoir performance; performance of enhanced oil recovery projects; regulatory changes; the impact of fiscal and commercial terms; asset sales; weather events; price effects on production sharing contracts; and changes in the amount and timing of investments that may vary depending on the oil and gas price environment. The Corporation’s cash flows are also highly dependent on crude oil and natural gas prices. Please refer to Item 1A. Risk Factors for a more complete discussion of risks.

The Corporation’s financial strength enables it to make large, long-term capital expenditures. Capital and exploration expenditures in 2017 were $23.1 billion, reflecting the Corporation’s continued active investment program. The Corporation anticipates an investment level of $24 billion in 2018.

Actual spending could vary depending on the progress of individual projects and property acquisitions. The Corporation has a large and diverse portfolio of development projects and exploration opportunities, which helps mitigate the overall political and technical risks of the Corporation’s Upstream segment and associated cash flow. Further, due to its financial strength, debt capacity and diverse portfolio of opportunities, the risk associated with failure or delay of any single project would not have a significant impact on the Corporation’s liquidity or ability to generate sufficient cash flows for operations and its fixed commitments.

Cash Flow from Operating Activities

2017

Cash provided by operating activities totaled $30.1 billion in 2017, $8.0 billion higher than 2016. The major source of funds was net income including noncontrolling interests of $19.8 billion, an increase of $11.5 billion. The noncash provision for depreciation and depletion was $19.9 billion, down $2.4 billion from the prior year. The adjustment for deferred income tax credits was $8.6 billion, compared to $4.4 billion in 2016. Changes in operational working capital, excluding cash and debt, decreased cash in 2017 by $0.6 billion.

2016

Cash provided by operating activities totaled $22.1 billion in 2016, $8.3 billion lower than 2015. The major source of funds was net income including noncontrolling interests of $8.4 billion, a decrease of $8.2 billion. The noncash provision for depreciation and depletion was $22.3 billion, up $4.3 billion from the prior year. The adjustment for net gains on asset sales was $1.7 billion while the adjustment for deferred income tax credits was $4.4 billion. Changes in operational working capital, excluding cash and debt, decreased cash in 2016 by $1.4 billion.

Cash Flow from Investing Activities

2017

Cash used in investing activities netted to $15.7 billion in 2017, $3.3 billion higher than 2016. Spending for property, plant and equipment of $15.4 billion decreased $0.8 billion from 2016. Proceeds associated with sales of subsidiaries, property, plant and equipment, and sales and returns of investments of $3.1 billion compared to $4.3 billion in 2016. Additional investments and advances were $4.1 billion higher in 2017, while proceeds from other investing activities including collection of advances increased by $1.2 billion.

2016

Cash used in investing activities netted to $12.4 billion in 2016, $11.4 billion lower than 2015. Spending for property, plant and equipment of $16.2 billion decreased $10.3 billion from 2015. Proceeds associated with sales of subsidiaries, property, plant and equipment, and sales and returns of investments of $4.3 billion compared to $2.4 billion in 2015. Additional investments and advances were $0.8 billion higher in 2016.

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Cash Flow from Financing Activities

2017

Cash used in financing activities was $15.1 billion in 2017, $5.8 billion higher than 2016. Dividend payments on common shares increased to $3.06 per share from $2.98 per share and totaled $13.0 billion. Total debt decreased $0.4 billion to $42.3 billion at year‑end. The reduction was principally driven by net repayments of $1.0 billion, and included short-term debt repayments of $5.0 billion that were partly offset by additions in commercial paper and other debt of $4.0 billion.

ExxonMobil share of equity increased $20.4 billion to $187.7 billion. The addition to equity for earnings was $19.7 billion. This was partly offset by reductions for distributions to ExxonMobil shareholders of $13.0 billion, all in the form of dividends. Foreign exchange translation effects of $5.0 billion for the weaker U.S. currency and a $1.0 billion change in the funded status of the postretirement benefits reserves both increased equity. Shares issued for acquisitions added $7.8 billion to equity.

During 2017, Exxon Mobil Corporation acquired 10 million shares of its common stock for the treasury. Purchases were made to offset shares or units settled in shares issued in conjunction with the company’s benefit plans and programs. Shares outstanding increased from 4,148 million to 4,239 million at the end of 2017, mainly due to a total of 96 million shares issued for the acquisitions of InterOil Corporation and of companies that hold acreage in the Permian basin.

2016

Cash used in financing activities was $9.3 billion in 2016, $2.3 billion higher than 2015. Dividend payments on common shares increased to $2.98 per share from $2.88 per share and totaled $12.5 billion. Total debt increased $4.1 billion to $42.8 billion at year‑end. The first quarter issuance of $12.0 billion in long-term debt was partly offset by repayments of $8.0 billion in commercial paper and other short-term debt during the year.

ExxonMobil share of equity decreased $3.5 billion to $167.3 billion. The addition to equity for earnings was $7.8 billion. This was offset by reductions for distributions to ExxonMobil shareholders of $12.5 billion, all in the form of dividends. Foreign exchange translation effects of $0.3 billion for the stronger U.S. currency reduced equity, while a $1.6 billion change in the funded status of the postretirement benefits reserves increased equity.

During 2016, Exxon Mobil Corporation acquired 12 million shares of its common stock for the treasury. Purchases were made to offset shares or units settled in shares issued in conjunction with the company’s benefit plans and programs. Shares outstanding were reduced from 4,156 million to 4,148 million at the end of 2016.

49

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Commitments

Set forth below is information about the outstanding commitments of the Corporation’s consolidated subsidiaries at December 31, 2017. The table combines data from the Consolidated Balance Sheet and from individual notes to the Consolidated Financial Statements.

		Payments Due by Period
		Note				2023
		Reference		2019-	2021-	and
Commitments		Number	2018	2020	2022	Beyond	Total
		(millions of dollars)
Long-term debt  (1)		14	-	5,662	4,384	14,360	24,406
	– Due in one year  (2)	6	4,766	-	-	-	4,766
Asset retirement obligations  (3)		9	777	1,856	894	9,178	12,705
Pension and other postretirement obligations  (4)		17	2,061	1,991	1,947	14,704	20,703
Operating leases  (5)		11	936	1,166	667	1,521	4,290
Take-or-pay and unconditional purchase obligations  (6)			3,389	5,973	4,870	12,259	26,491
Firm capital commitments  (7)			5,743	2,338	828	737	9,646

This table excludes commodity purchase obligations (volumetric commitments but no fixed or minimum price) which are resold shortly after purchase, either in an active, highly liquid market or under long-term, unconditional sales contracts with similar pricing terms. Examples include long-term, noncancelable LNG and natural gas purchase commitments and commitments to purchase refinery products at market prices. Inclusion of such commitments would not be meaningful in assessing liquidity and cash flow, because these purchases will be offset in the same periods by cash received from the related sales transactions. The table also excludes unrecognized tax benefits totaling $8.8 billion as of December 31, 2017, because the Corporation is unable to make reasonably reliable estimates of the timing of cash settlements with the respective taxing authorities. Further details on the unrecognized tax benefits can be found in “Note 19: Income and Other Taxes”.

Notes:

(1)   Includes capitalized lease obligations of $1,327 million.

(2)   The amount due in one year is included in Notes and loans payable of $17,930 million.

(3)   Asset retirement obligations are primarily upstream asset removal costs at the completion of field life.

(4)   The amount by which the benefit obligations exceeded the fair value of fund assets for certain U.S. and non-U.S. pension and other postretirement plans at year-end. The payments by period include expected contributions to funded pension plans in 2018 and estimated benefit payments for unfunded plans in all years.

(5)   Minimum commitments for operating leases, shown on an undiscounted basis, cover drilling equipment, tankers, service stations and other properties. Total includes $611 million related to drilling rigs and related equipment.

(6)   Take-or-pay obligations are noncancelable, long-term commitments for goods and services. Unconditional purchase obligations are those long-term commitments that are noncancelable or cancelable only under certain conditions, and that third parties have used to secure financing for the facilities that will provide the contracted goods or services. The undiscounted obligations of $26,491 million mainly pertain to pipeline, manufacturing supply and terminal agreements.

(7)   Firm capital commitments represent legally binding payment obligations to third parties where agreements specifying all significant terms have been executed for the construction and purchase of fixed assets and other permanent investments. In certain cases where the Corporation executes contracts requiring commitments to a work scope, those commitments have been included to the extent that the amounts and timing of payments can be reliably estimated. Firm capital commitments, shown on an undiscounted basis, totaled $9.6 billion, including $1.9 billion in the U.S. Firm capital commitments for the non-U.S. Upstream of $7.2 billion were primarily associated with projects in the United Arab Emirates, Africa, United Kingdom, Guyana, Malaysia, Norway, Canada and Australia. The Corporation expects to fund the majority of these commitments with internally generated funds, supplemented by short-term and long-term debt as required.

50

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Guarantees

The Corporation and certain of its consolidated subsidiaries were contingently liable at December 31, 2017, for guarantees relating to notes, loans and performance under contracts (Note 16). 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. These guarantees are not reasonably likely to have a material effect on the Corporation’s financial condition, changes in financial condition, revenues or expenses, results of operations, liquidity, capital expenditures or capital resources.

Financial Strength

On December 31, 2017, the Corporation’s unused short-term committed lines of credit totaled $5.4 billion (Note 6) and unused long-term committed lines of credit totaled $0.2 billion (Note 14). The table below shows the Corporation’s fixed-charge coverage and consolidated debt-to-capital ratios. The data demonstrates the Corporation’s creditworthiness.

	2017	2016	2015
Fixed-charge coverage ratio (times)	13.2	5.7	17.6
Debt to capital (percent)	17.9	19.7	18.0
Net debt to capital (percent)	16.8	18.4	16.5

Management views the Corporation’s financial strength, as evidenced by the above financial ratios and other similar measures, to be a competitive advantage of strategic importance. The Corporation’s sound financial position gives it the opportunity to access the world’s capital markets in the full range of market conditions, and enables the Corporation to take on large, long-term capital commitments in the pursuit of maximizing shareholder value.

Litigation and Other Contingencies

As discussed in Note 16, a variety of claims have been made against ExxonMobil and certain of its consolidated subsidiaries in a number of pending lawsuits. Based on a consideration of all relevant facts and circumstances, the Corporation does not believe the ultimate outcome of any currently pending lawsuit against ExxonMobil will have a material adverse effect upon the Corporation’s operations, financial condition, or financial statements taken as a whole. There are no events or uncertainties beyond those already included in reported financial information that would indicate a material change in future operating results or financial condition. Refer to Note 16 for additional information on legal proceedings and other contingencies.

CAPITAL AND EXPLORATION EXPENDITURES
		2017				2016
		U.S.	Non-U.S.		Total	U.S.	Non-U.S.		Total
		(millions of dollars)
Upstream (1)		3,716		12,979	16,695	3,518		11,024	14,542
Downstream		823		1,701	2,524	839		1,623	2,462
Chemical		1,583		2,188	3,771	1,553		654	2,207
Other		90		-	90	93		-	93
	Total	6,212		16,868	23,080	6,003		13,301	19,304
(1) Exploration expenses included.

Capital and exploration expenditures in 2017 were $23.1 billion, as the Corporation continued to pursue opportunities to find and produce new supplies of oil and natural gas to meet global demand for energy. The Corporation anticipates an investment level of $24 billion in 2018. Actual spending could vary depending on the progress of individual projects and property acquisitions.

Upstream spending of $16.7 billion in 2017 was up 15 percent from 2016. Investments in 2017 included acquisitions in Mozambique and Brazil, U.S. onshore drilling activity and global development projects. Development projects typically take several years from the time of recording proved undeveloped reserves to the start of production and can exceed five years for large and complex projects. The percentage of proved developed reserves was 66 percent of total proved reserves at year‑end 2017, and has been over 60 percent for the last ten years.

Capital investments in the Downstream totaled $2.5 billion in 2017, consistent with 2016, reflecting global refining project spending. Chemical capital expenditures of $3.8 billion increased $1.6 billion from 2016 mainly resulting from the acquisition of a large-scale aromatics plant in Singapore.

51

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

TAXES
		2017	2016	2015
		(millions of dollars)
Income taxes		(1,174)	(406)	5,415
	Effective income tax rate	5%	13%	34%
Total other taxes and duties		32,459	31,375	32,834
	Total	31,285	30,969	38,249

2017

Total taxes on the Corporation’s income statement were $31.3 billion in 2017, an increase of $0.3 billion from 2016. Income tax expense, both current and deferred, was a credit of $1.2 billion compared to a credit of $0.4 billion in 2016, with the U.S. tax reform impact of $5.9 billion partially offset by higher pre-tax income. The effective tax rate, which is calculated based on consolidated company income taxes and ExxonMobil’s share of equity company income taxes, was 5 percent compared to 13 percent in the prior year due primarily to the impact of U.S. tax reform. Total other taxes and duties of $32.5 billion in 2017 increased $1.1 billion.

2016

Total taxes were $31.0 billion in 2016, a decrease of $7.2 billion from 2015. Income tax expense, both current and deferred, was a credit of $0.4 billion, $5.8 billion lower than 2015, reflecting lower pre-tax income. The effective tax rate, which is calculated based on consolidated company income taxes and ExxonMobil’s share of equity company income taxes, was 13 percent compared to 34 percent in the prior year due primarily to a lower share of earnings in higher tax jurisdictions, favorable one-time items, and the impact of the U.S. Upstream impairment charge. Total other taxes and duties of $31.4 billion in 2016 decreased $1.5 billion.

U.S. Tax Reform

Following the December 22, 2017, enactment of the U.S. Tax Cuts and Jobs Act, in accordance with Accounting Standard Codification Topic 740 (Income Taxes) and following the guidance outlined in the SEC Staff Accounting Bulletin No. 118, the Corporation has included reasonable estimates of the income tax effects of the changes in tax law and tax rate. These include amounts for the remeasurement of the deferred income tax balance from the reduction in the corporate tax rate from 35 to 21 percent and the mandatory deemed repatriation of undistributed foreign earnings and profits. ExxonMobil’s significant historical investments in the United States have created large deferred income tax liabilities. Remeasurement of these deferred income tax liabilities from the 35 percent rate to 21 percent results in a one-time non-cash benefit to earnings. The Corporation has paid taxes on earnings outside the United States at tax rates on average above the historical U.S. rate of 35 percent. As a result, the deemed repatriation tax does not create a significant tax impact for ExxonMobil. The impact of tax law changes on the Corporation’s financial statements could differ from its estimates due to further analysis of the new law, regulatory guidance, technical corrections legislation, or guidance under U.S. GAAP. If significant changes occur, the Corporation will provide updated information in connection with future regulatory filings.

The 21 percent corporate tax rate will reduce the tax cost of U.S. earnings from U.S. investments, although the savings may be somewhat offset by other provisions that could raise the Corporation’s future tax liability. Within the normal course of business, other provisions of the tax law that are effective in 2018 are not expected to have a material effect on operating results or financial condition. 

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

ENVIRONMENTAL MATTERS

Environmental Expenditures
		2017	2016
		(millions of dollars)
Capital expenditures		1,321	1,436
Other expenditures		3,349	3,451
	Total	4,670	4,887

Throughout ExxonMobil’s businesses, new and ongoing measures are taken to prevent and minimize the impact of our operations on air, water and ground. These include a significant investment in refining infrastructure and technology to manufacture clean fuels, as well as projects to monitor and reduce nitrogen oxide, sulfur oxide and greenhouse gas emissions, and expenditures for asset retirement obligations. Using definitions and guidelines established by the American Petroleum Institute, ExxonMobil’s 2017 worldwide environmental expenditures for all such preventative and remediation steps, including ExxonMobil’s share of equity company expenditures, were $4.7 billion, of which $3.3 billion were included in expenses with the remainder in capital expenditures. The total cost for such activities is expected to increase to approximately $5 billion in 2018 and 2019. Capital expenditures are expected to account for approximately 30 percent of the total.

Environmental Liabilities

The Corporation accrues environmental liabilities when it is probable that obligations have been incurred and the amounts can be reasonably estimated. This policy applies to assets or businesses currently owned or previously disposed. ExxonMobil has accrued liabilities for probable environmental remediation obligations at various sites, including multiparty sites where the U.S. Environmental Protection Agency has identified ExxonMobil as one of the potentially responsible parties. The involvement of other financially responsible companies at these multiparty sites could mitigate ExxonMobil’s actual joint and several liability exposure. At present, no individual site is expected to have losses material to ExxonMobil’s operations or financial condition. Consolidated company provisions made in 2017 for environmental liabilities were $302 million ($665 million in 2016) and the balance sheet reflects accumulated liabilities of $872 million as of December 31, 2017, and $852 million as of December 31, 2016.

MARKET RISKS, INFLATION AND OTHER UNCERTAINTIES

Worldwide Average Realizations(1)	2017	2016	2015
Crude oil and NGL ($ per barrel)	48.91	38.15	44.77
Natural gas ($ per thousand cubic feet)	3.04	2.25	2.95
(1)  Consolidated subsidiaries.

Crude oil, natural gas, petroleum product and chemical prices have fluctuated in response to changing market forces. The impacts of these price fluctuations on earnings from Upstream, Downstream and Chemical operations have varied. In the Upstream, a $1 per barrel change in the weighted-average realized price of oil would have approximately a $425 million annual after-tax effect on Upstream consolidated plus equity company earnings. Similarly, a $0.10 per thousand cubic feet change in the worldwide average gas realization would have approximately a $165 million annual after-tax effect on Upstream consolidated plus equity company earnings. For any given period, the extent of actual benefit or detriment will be dependent on the price movements of individual types of crude oil, taxes and other government take impacts, price adjustment lags in long-term gas contracts, and crude and gas production volumes. Accordingly, changes in benchmark prices for crude oil and natural gas only provide broad indicators of changes in the earnings experienced in any particular period.

In the very competitive downstream and chemical environments, earnings are primarily determined by margin capture rather than absolute price levels of products sold. Refining margins are a function of the difference between what a refiner pays for its raw materials (primarily crude oil) and the market prices for the range of products produced. These prices in turn depend on global and regional supply/demand balances, inventory levels, refinery operations, import/export balances and weather.

53

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The global energy markets can give rise to extended periods in which market conditions are adverse to one or more of the Corporation’s businesses. Such conditions, along with the capital-intensive nature of the industry and very long lead times associated with many of our projects, underscore the importance of maintaining a strong financial position. Management views the Corporation’s financial strength as a competitive advantage.

In general, segment results are not dependent on the ability to sell and/or purchase products to/from other segments. Instead, where such sales take place, they are the result of efficiencies and competitive advantages of integrated refinery/chemical complexes. Additionally, intersegment sales are at market-based prices. The products bought and sold between segments can also be acquired in worldwide markets that have substantial liquidity, capacity and transportation capabilities. About 35 percent of the Corporation’s intersegment sales represent Upstream production sold to the Downstream. Other intersegment sales include those between refineries and chemical plants related to raw materials, feedstocks and finished products.

Although price levels of crude oil and natural gas may rise or fall significantly over the short to medium term due to global economic conditions, political events, decisions by OPEC and other major government resource owners and other factors, industry economics over the long term will continue to be driven by market supply and demand. Accordingly, the Corporation evaluates the viability of its major investments over a range of prices.

The Corporation has an active asset management program in which underperforming assets are either improved to acceptable levels or considered for divestment. The asset management program includes a disciplined, regular review to ensure that all assets are contributing to the Corporation’s strategic objectives resulting in an efficient capital base.

Risk Management

The Corporation’s size, strong capital structure, geographic diversity and the complementary nature of the Upstream, Downstream and Chemical businesses reduce the Corporation’s enterprise-wide risk from changes in interest rates, currency rates and commodity prices. In addition, the Corporation uses commodity-based contracts, including derivatives, to manage commodity price risk and for trading purposes. 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 believes that there are no material market or credit risks to the Corporation’s financial position, results of operations or liquidity as a result of the derivatives described in Note 13. The Corporation maintains a system of controls that includes the authorization, reporting and monitoring of derivative activity.

The Corporation is exposed to changes in interest rates, primarily on its short-term debt and the portion of long-term debt that carries floating interest rates. The impact of a 100-basis-point change in interest rates affecting the Corporation’s debt would not be material to earnings, cash flow or fair value. The Corporation has access to significant capacity of long-term and short-term liquidity. Internally generated funds are expected to cover the majority of financial requirements, supplemented by long-term and short-term debt. Some joint-venture partners are dependent on the credit markets, and their funding ability may impact the development pace of joint-venture projects.

The Corporation conducts business in many foreign currencies and is subject to exchange rate risk on cash flows related to sales, expenses, financing and investment transactions. Fluctuations in exchange rates are often offsetting and the impacts on ExxonMobil’s geographically and functionally diverse operations are varied. The Corporation makes limited use of currency exchange contracts to mitigate the impact of changes in currency values, and exposures related to the Corporation’s limited use of the currency exchange contracts are not material.

Inflation and Other Uncertainties

The general rate of inflation in many major countries of operation has remained moderate over the past few years, and the associated impact on non-energy costs has generally been mitigated by cost reductions from efficiency and productivity improvements. Beginning several years ago, an extended period of increased demand for certain services and materials resulted in higher operating and capital costs. Since then, multiple market changes, including lower oil prices and reduced upstream industry activity, have contributed to lower prices for oilfield services and materials. The Corporation monitors market trends and works to minimize costs in all commodity price environments through its economies of scale in global procurement and its efficient project management practices.

54

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

RECENTLY ISSUED ACCOUNTING STANDARDS

Effective January 1, 2018, ExxonMobil adopted the Financial Accounting Standards Board’s standard, Revenue from Contracts with Customers, as amended. The standard establishes a single revenue recognition model for all contracts with customers, eliminates industry and transaction specific requirements, and expands disclosure requirements. The standard was adopted using the Modified Retrospective method, under which prior year results are not restated, but supplemental information on the impact of the new standard must be provided for 2018 results, if material. The standard is not expected to have a material impact on the Corporation’s financial statements. The cumulative effect of adoption of the new standard is de minimis.

Effective January 1, 2018, ExxonMobil adopted the Financial Accounting Standards Board’s Update, Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. The standard requires investments in equity securities other than consolidated subsidiaries and equity method investments to be measured at fair value with changes in the fair value recognized through net income. Companies can elect a modified approach for equity securities that do not have a readily determinable fair value. The standard is not expected to have a material impact on the Corporation’s financial statements.

Effective January 1, 2018, ExxonMobil adopted the Financial Accounting Standards Board’s Update, Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The update requires the service cost component of net benefit costs to be reported in the same line of the income statement as other compensation costs and the other components of net benefit costs (non-service costs) to be presented separately from the service cost component. Additionally, only the service cost component of net benefit costs is eligible for capitalization. The Corporation expects to add a new line “Non-service pension and postretirement benefit expense” to its Consolidated Statement of Income and expects to include all of these costs in its Corporate and financing segment. This line would reflect the non-service costs that were previously included in “Production and manufacturing expenses” and “Selling, general and administrative expenses”. The update is not expected to have a material impact on the Corporation’s financial statements.

Effective January 1, 2019, ExxonMobil will adopt the Financial Accounting Standards Board’s standard, Leases. The standard requires all leases with an initial term greater than one year be recorded on the balance sheet as an asset and a lease liability. The Corporation is gathering and evaluating data and recently acquired a system to facilitate implementation. We are progressing an assessment of the magnitude of the effect on the Corporation’s financial statements.

CRITICAL ACCOUNTING ESTIMATES

The Corporation’s accounting and financial reporting fairly reflect its straightforward business model involving the extracting, refining and marketing of hydrocarbons and hydrocarbon-based products. The preparation of financial statements in conformity with U.S. Generally Accepted Accounting Principles (GAAP) requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities. The Corporation’s accounting policies are summarized in Note 1.

Oil and Natural Gas Reserves

The estimation of proved reserves is an ongoing process based on rigorous technical evaluations, commercial and market assessments and detailed analysis of well information such as flow rates and reservoir pressure declines, among other factors. The estimation of proved reserves is controlled by the Corporation through long-standing approval guidelines. Reserve changes are made within a well-established, disciplined process driven by senior level geoscience and engineering professionals, assisted by the Global Reserves group which has significant technical experience, culminating in reviews with and approval by senior management. Notably, the Corporation does not use specific quantitative reserve targets to determine compensation. Key features of the reserve estimation process are covered in Disclosure of Reserves in Item 2.

Oil and natural gas reserves include both proved and unproved reserves.

·Proved oil and natural gas reserves are determined in accordance with Securities and Exchange Commission (SEC) requirements. Proved reserves are those quantities of oil and natural gas which, by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible under existing economic and operating conditions and government regulations. Proved reserves are determined using the average of first-of-month oil and natural gas prices during the reporting year.

Proved reserves can be further subdivided into developed and undeveloped reserves. Proved developed reserves include amounts which are expected to be recovered through existing wells with existing equipment and operating methods. Proved undeveloped reserves include amounts expected to be recovered from new wells on undrilled proved acreage or from existing wells where a relatively major expenditure is required for completion. Proved undeveloped reserves are recognized only if a development plan has been adopted indicating that the reserves are scheduled to be drilled within five years, unless specific circumstances support a longer period of time.

55

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The percentage of proved developed reserves was 66 percent of total proved reserves at year-end 2017 (including both consolidated and equity company reserves), a reduction from 69 percent in 2016, and has been over 60 percent for the last ten years. Although the Corporation is reasonably certain that proved reserves will be produced, the timing and amount recovered can be affected by a number of factors including completion of development projects, reservoir performance, regulatory approvals, government policy, consumer preferences and significant changes in long-term oil and natural gas prices.

·Unproved reserves are quantities of oil and natural gas with less than reasonable certainty of recoverability and include probable reserves. Probable reserves are reserves that, together with proved reserves, are as likely as not to be recovered.

Revisions in previously estimated volumes of proved reserves for existing fields can occur due to the evaluation or re-evaluation of (1) already available geologic, reservoir or production data, (2) new geologic, reservoir or production data or (3) changes in the average of first-of-month oil and natural gas prices and / or costs that are used in the estimation of reserves. Revisions can also result from significant changes in development strategy or production equipment and facility capacity.

Unit-of-Production Depreciation

Oil and natural gas reserve quantities are used as the basis to calculate unit-of-production depreciation rates for most upstream assets. Depreciation is calculated by taking the ratio of asset cost to total proved reserves or proved developed reserves applied to actual production. The volumes produced and asset cost are known, while proved reserves are based on estimates that are subject to some variability.

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. The effect of this approach on the Corporation’s 2018 depreciation expense versus 2017 is anticipated to be immaterial.

Impairment

The Corporation tests assets or groups of assets for recoverability on an ongoing basis whenever events or 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.

Asset valuation analyses performed as part of its asset management program and other profitability reviews assist the Corporation in assessing whether events or circumstances indicate the carrying amounts of any of its assets may not be recoverable.

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 and levels of prosperity. Because the lifespans of the vast majority of the Corporation’s major assets are measured in decades, the value of these assets is predominantly based on long-term views of future commodity prices and production costs. During the lifespan of these major assets, the Corporation expects that oil and gas prices will experience significant volatility, and consequently these assets will experience periods of higher earnings and periods of lower earnings, or even losses.

56

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

In assessing whether the 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. While near-term prices are subject to wide fluctuations, longer-term price views are more stable and meaningful for purposes of assessing future cash flows.

When the industry experiences a prolonged and deep reduction in commodity prices, the market supply and demand conditions may result in changes to the Corporation’s long-term price or margin assumptions it uses for its capital investment decisions. To the extent those changes result in a significant reduction to its long-term oil price, natural gas price or margin ranges, the Corporation may consider that situation, in conjunction with other events and changes in circumstances such as a history of operating losses, an indicator of potential impairment for certain assets.

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. These prices represent discrete points in time and could be higher or lower than the Corporation’s long-term 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.

If events or 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 Corporation’s assumptions which are developed in the annual planning and budgeting process, 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, refining and chemical margins, volumes, costs, and foreign currency exchange rates. Volumes are based on projected field and facility production profiles, throughput, or sales. Where unproved reserves exist, an appropriately risk-adjusted amount of these reserves may be included in the evaluation. Cash flow estimates for impairment testing exclude the effects of derivative instruments.

An asset group is impaired if its estimated undiscounted cash flows are less than the asset’s carrying value. Impairments are measured by the amount by which the carrying value exceeds fair value. Fair value is based on market prices if an active market exists for the asset group, or discounted cash flows using a discount rate commensurate with the risk. Significant unproved properties are assessed for impairment individually, and valuation allowances against the capitalized costs are recorded based on 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.

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 relies in part on the Corporation’s planning and budgeting cycle. As part of its 2017 annual planning and budgeting cycle, the Corporation identified emerging trends such as increasing estimates of available natural gas supplies and ongoing reductions in the industry’s costs of supply for natural gas that resulted in a reduction to the Corporation’s long-term natural gas price outlooks. Based in part on these trends, the Corporation concluded that events and circumstances indicated that the carrying value of certain long-lived assets, notably North America natural gas assets and certain other assets across the remainder of its Upstream operations, may not be recoverable. Accordingly, an impairment assessment was performed which indicated that the vast majority of asset groups assessed have future undiscounted cash flow estimates that exceed their carrying values. However, the carrying values for certain asset groups in the United States exceeded the estimated cash flows. As a result, the Corporation’s fourth quarter 2017 results include an after-tax charge of $0.5 billion to reduce the carrying value of those assets to fair value. The asset groups subject to this impairment charge are primarily dry gas operations with little additional development potential. In addition, the Corporation made a decision to cease development planning activities and further allocation of capital to certain non-producing assets outside the United States. The Corporation’s fourth quarter 2017 results include an after-tax charge of $0.8 billion to reduce the carrying value of those assets. Other impairments during the year resulted in an after-tax charge of $0.2 billion.

The assessment of fair values required the use of Level 3 inputs and assumptions that are based upon the views of a likely market participant. The principal parameters used to establish fair values included estimates of both proved and unproved reserves, future commodity prices which were consistent with the average of third-party industry experts and government agencies, drilling and development costs, discount rates ranging from 5.5 percent to 8 percent depending on the characteristics of the asset group, and comparable market transactions. Factors which could put further assets at risk of impairment in the future include reductions in the Corporation’s long-term price outlooks, changes in the allocation of capital, and operating cost increases which exceed the pace of efficiencies or the pace of oil and natural gas price increases. However, due to the inherent difficulty in predicting future

57

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

commodity prices, and the relationship between industry prices and costs, it is not practicable to reasonably estimate the existence or range of any potential future impairment charges related to the Corporation’s long-lived assets.

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).

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 are disclosed in Note 9 to the financial statements.

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. Exploratory well costs not meeting these criteria are charged to expense. The facts and circumstances that support continued capitalization of suspended wells at year-end are disclosed in Note 10 to the financial statements.

Consolidations

The Consolidated Financial Statements include the accounts of subsidiaries the Corporation controls. 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 accounted for using the equity method of accounting.

Investments in companies that are partially owned by the Corporation are integral to the Corporation’s operations. In some cases they serve to balance worldwide risks, and in others they provide the only available means of entry into a particular market or area of interest. The other parties, who also have an equity interest in these companies, are either independent third parties or host governments that share in the business results according to their ownership. The Corporation does not invest in these companies in order to remove liabilities from its balance sheet. In fact, the Corporation has long been on record supporting an alternative accounting method that would require each investor to consolidate its share of all assets and liabilities in these partially-owned companies rather than only its interest in net equity. This method of accounting for investments in partially-owned companies is not permitted by U.S. GAAP except where the investments are in the direct ownership of a share of upstream assets and liabilities. However, for purposes of calculating return on average capital employed, which is not covered by U.S. GAAP standards, the Corporation includes its share of debt of these partially-owned companies in the determination of average capital employed.

Pension Benefits

The Corporation and its affiliates sponsor nearly 100 defined benefit (pension) plans in over 40 countries. The Pension and Other Postretirement Benefits footnote (Note 17) provides details on pension obligations, fund assets and pension expense.

Some of these plans (primarily non-U.S.) provide pension benefits that are paid directly by their sponsoring affiliates out of corporate cash flow rather than a separate pension fund because applicable tax rules and regulatory practices do not encourage advance funding. Book reserves are established for these plans. The portion of the pension cost attributable to employee service is expensed as services are rendered. The portion attributable to the increase in pension obligations due to the passage of time is expensed over the term of the obligations, which ends when all benefits are paid. The primary difference in pension expense for unfunded versus funded plans is that pension expense for funded plans also includes a credit for the expected long-term return on fund assets.

For funded plans, including those in the U.S., pension obligations are financed in advance through segregated assets or insurance arrangements. These plans are managed in compliance with the requirements of governmental authorities and meet or exceed required funding levels as measured by relevant actuarial and government standards at the mandated measurement dates. In determining liabilities and required contributions, these standards often require approaches and assumptions that differ from those used for accounting purposes.

58

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The Corporation will continue to make contributions to these funded plans as necessary. 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 accounting requires explicit assumptions regarding, among others, the long-term expected earnings rate on fund assets, the discount rate for the benefit obligations and the long-term rate for future salary increases. Pension assumptions are reviewed annually by outside actuaries and senior management. These assumptions are adjusted as appropriate to reflect changes in market rates and outlook. The long-term expected earnings rate on U.S. pension plan assets in 2017 was 6.50 percent. The 10‑year and 20‑year actual returns on U.S. pension plan assets were 5 percent and 8 percent, respectively. The Corporation establishes the long‑term expected rate of return by developing a forward-looking, long-term return assumption for each pension fund 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. A worldwide reduction of 0.5 percent in the long-term rate of return on assets would increase annual pension expense by approximately $170 million before tax.

Differences between actual returns on fund assets and the long-term expected return are not recognized in pension expense in the year that the difference occurs. Such differences are deferred, along with other actuarial gains and losses, and are amortized into pension expense over the expected remaining service life of employees.

Litigation Contingencies

A variety of claims have been made against the Corporation 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 status of significant claims is summarized in Note 16.

The Corporation accrues an undiscounted liability for those contingencies where the incurrence of a loss is probable, and the amount can be reasonably estimated. These amounts are not reduced by amounts that may be recovered under insurance or claims against third parties, but undiscounted receivables from insurers or other third parties may be accrued separately. The Corporation revises such accruals in light of new information. 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 litigation contingency disclosures, “significant” includes material matters as well as other items which management believes should be disclosed.

Management judgment is required related to contingent liabilities and the outcome of litigation because both are difficult to predict. However, the Corporation has been successful in defending litigation in the past. Payments have not had a material adverse effect on operations or financial condition. In the Corporation’s experience, large claims often do not result in large awards. Large awards are often reversed or substantially reduced as a result of appeal or settlement.

Tax Contingencies

The Corporation is subject to income taxation in many jurisdictions around the world. Significant management judgment is required in the accounting for income tax contingencies and tax disputes because the outcomes are often difficult to predict.

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. A reserve is established for the difference between a position taken or expected to be taken in an income tax return and the amount recognized in the financial statements. The Corporation’s unrecognized tax benefits and a description of open tax years are summarized in Note 19.

Foreign Currency Translation

The method of translating the foreign currency financial statements of the Corporation’s international subsidiaries into U.S. dollars is prescribed by GAAP. Under these principles, it is necessary to select the functional currency of these subsidiaries. The functional currency is the currency of the primary economic environment in which the subsidiary operates. Management selects the functional currency after evaluating this economic environment.

Factors considered by management when determining the functional currency for a subsidiary include the currency used for cash flows related to individual assets and liabilities; the responsiveness of sales prices to changes in exchange rates; the history of inflation in the country; whether sales are into local markets or exported; the currency used to acquire raw materials, labor, services and supplies; sources of financing; and significance of intercompany transactions.

59

MANAGEMENT’S REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING

Management, including the Corporation’s Chief Executive Officer, Principal Financial Officer, and Principal Accounting Officer, is responsible for establishing and maintaining adequate internal control over the Corporation’s financial reporting. Management conducted an evaluation of the effectiveness of internal control over financial reporting based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on this evaluation, management concluded that Exxon Mobil Corporation’s internal control over financial reporting was effective as of December 31, 2017.

PricewaterhouseCoopers LLP, an independent registered public accounting firm, audited the effectiveness of the Corporation’s internal control over financial reporting as of December 31, 2017, as stated in their report included in the Financial Section of this report.

Darren W. Woods Chief Executive Officer	Andrew P. Swiger Senior Vice President (Principal Financial Officer)	David S. Rosenthal Vice President and Controller (Principal Accounting Officer)

60

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of Exxon Mobil Corporation

Opinions on the Financial Statements and Internal Control over Financial Reporting

We have audited the accompanying consolidated balance sheets of Exxon Mobil Corporation and its subsidiaries (the “Corporation”) as of December 31, 2017 and 2016, and the related consolidated statements of income, comprehensive income, changes in equity and cash flows for each of the three years in the period ended December 31, 2017, including the related notes (collectively referred to as the “consolidated financial statements”). We also have audited the Corporation's internal control over financial reporting as of December 31, 2017 based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

In our opinion, the consolidatedfinancial statements referred to above present fairly, in all material respects, the financial position of the Corporation as of December 31, 2017 and 2016, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2017 in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the Corporation maintained, in all material respects, effective internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control - Integrated Framework (2013) issued by the COSO.

Change in Accounting Principle

As discussed in Note 2 to the consolidated financial statements, in 2017 the Corporation changed the manner in which it accounts for certain sales and value-added taxes imposed on and concurrent with revenue-producing transactions with customers and collected on behalf of governmental authorities.               

Basis for Opinions

The Corporation's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express opinions on the Corporation’s consolidatedfinancial statements and on the Corporation's internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) ("PCAOB") and are required to be independent with respect to the Corporation in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidatedfinancial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

61

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP

Dallas, Texas

February 28, 2018

We have served as the Corporation’s auditor since 1934.  

62

CONSOLIDATED STATEMENT OF INCOME

			Note
			Reference
			Number	2017	2016	2015
				(millions of dollars)
Revenues and other income
	Sales and other operating revenue (1)		2	237,162	200,628	239,854
	Income from equity affiliates		7	5,380	4,806	7,644
	Other income			1,821	2,680	1,750
		Total revenues and other income		244,363	208,114	249,248
Costs and other deductions
	Crude oil and product purchases			128,217	104,171	130,003
	Production and manufacturing expenses			34,128	31,927	35,587
	Selling, general and administrative expenses			10,956	10,799	11,501
	Depreciation and depletion		9	19,893	22,308	18,048
	Exploration expenses, including dry holes			1,790	1,467	1,523
	Interest expense			601	453	311
	Other taxes and duties		2, 19	30,104	29,020	30,309
		Total costs and other deductions		225,689	200,145	227,282
Income before income taxes				18,674	7,969	21,966
	Income taxes		19	(1,174)	(406)	5,415
Net income including noncontrolling interests				19,848	8,375	16,551
	Net income attributable to noncontrolling interests			138	535	401
Net income attributable to ExxonMobil				19,710	7,840	16,150
Earnings per common share (dollars)			12	4.63	1.88	3.85
Earnings per common share - assuming dilution (dollars)			12	4.63	1.88	3.85

(1)   Effective December 31, 2017, the Corporation revised its accounting policy election related to sales-based taxes. See Note 2: Accounting Changes.

The information in the Notes to Consolidated Financial Statements is an integral part of these statements.

63

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME

			2017	2016	2015
			(millions of dollars)
Net income including noncontrolling interests			19,848	8,375	16,551
Other comprehensive income (net of income taxes)
	Foreign exchange translation adjustment		5,352	(174)	(9,303)
	Adjustment for foreign exchange translation (gain)/loss
		included in net income	234	-	(14)
	Postretirement benefits reserves adjustment (excluding amortization)		(219)	493	2,358
	Amortization and settlement of postretirement benefits reserves
		adjustment included in net periodic benefit costs	1,165	1,086	1,448
	Unrealized change in fair value of stock investments		-	-	33
	Realized (gain)/loss from stock investments included in net income		-	-	27
		Total other comprehensive income	6,532	1,405	(5,451)
Comprehensive income including noncontrolling interests			26,380	9,780	11,100
	Comprehensive income attributable to noncontrolling interests		693	668	(496)
Comprehensive income attributable to ExxonMobil			25,687	9,112	11,596

The information in the Notes to Consolidated Financial Statements is an integral part of these statements.

64

CONSOLIDATED BALANCE SHEET

				Note
				Reference	Dec. 31	Dec. 31
				Number	2017	2016
					(millions of dollars)
Assets
	Current assets
		Cash and cash equivalents			3,177	3,657
		Notes and accounts receivable, less estimated doubtful amounts		6	25,597	21,394
		Inventories
			Crude oil, products and merchandise	3	12,871	10,877
			Materials and supplies		4,121	4,203
		Other current assets			1,368	1,285
			Total current assets		47,134	41,416
	Investments, advances and long-term receivables			8	39,160	35,102
	Property, plant and equipment, at cost, less accumulated depreciation
		and depletion		9	252,630	244,224
	Other assets, including intangibles, net				9,767	9,572
			Total assets		348,691	330,314
Liabilities
	Current liabilities
		Notes and loans payable		6	17,930	13,830
		Accounts payable and accrued liabilities		6	36,796	31,193
		Income taxes payable			3,045	2,615
			Total current liabilities		57,771	47,638
	Long-term debt			14	24,406	28,932
	Postretirement benefits reserves			17	21,132	20,680
	Deferred income tax liabilities			19	26,893	34,041
	Long-term obligations to equity companies				4,774	5,124
	Other long-term obligations				19,215	20,069
			Total liabilities		154,191	156,484
Commitments and contingencies				16
Equity
	Common stock without par value
		(9,000 million shares authorized, 8,019 million shares issued)			14,656	12,157
	Earnings reinvested				414,540	407,831
	Accumulated other comprehensive income				(16,262)	(22,239)
	Common stock held in treasury
		(3,780 million shares in 2017 and 3,871 million shares in 2016)			(225,246)	(230,424)
			ExxonMobil share of equity		187,688	167,325
	Noncontrolling interests				6,812	6,505
			Total equity		194,500	173,830
			Total liabilities and equity		348,691	330,314

The information in the Notes to Consolidated Financial Statements is an integral part of these statements.

65

CONSOLIDATED STATEMENT OF CASH FLOWS

					Note
					Reference
					Number	2017	2016	2015
						(millions of dollars)
Cash flows from operating activities
	Net income including noncontrolling interests					19,848	8,375	16,551
	Adjustments for noncash transactions
		Depreciation and depletion			9	19,893	22,308	18,048
		Deferred income tax charges/(credits)				(8,577)	(4,386)	(1,832)
		Postretirement benefits expense
			in excess of/(less than) net payments			1,135	(329)	2,153
		Other long-term obligation provisions
			in excess of/(less than) payments			(610)	(19)	(380)
	Dividends received greater than/(less than) equity in current
		earnings of equity companies				131	(579)	(691)
	Changes in operational working capital, excluding cash and debt
		Reduction/(increase)		- Notes and accounts receivable		(3,954)	(2,090)	4,692
				- Inventories		(1,682)	(388)	(379)
				- Other current assets		(117)	171	45
		Increase/(reduction)		- Accounts and other payables		5,104	915	(7,471)
	Net (gain) on asset sales				5	(334)	(1,682)	(226)
	All other items - net				5	(771)	(214)	(166)
		Net cash provided by operating activities				30,066	22,082	30,344
Cash flows from investing activities
	Additions to property, plant and equipment				5	(15,402)	(16,163)	(26,490)
	Proceeds associated with sales of subsidiaries, property, plant
		and equipment, and sales and returns of investments			5	3,103	4,275	2,389
	Decrease/(increase) in restricted cash and cash equivalents					-	-	42
	Additional investments and advances					(5,507)	(1,417)	(607)
	Other investing activities including collection of advances					2,076	902	842
		Net cash used in investing activities				(15,730)	(12,403)	(23,824)
Cash flows from financing activities
	Additions to long-term debt				5	60	12,066	8,028
	Reductions in long-term debt					-	-	(26)
	Additions to short-term debt					1,735	-	-
	Reductions in short-term debt					(5,024)	(314)	(506)
	Additions/(reductions) in commercial paper, and debt with
		three months or less maturity			5	2,181	(7,459)	1,759
	Cash dividends to ExxonMobil shareholders					(13,001)	(12,453)	(12,090)
	Cash dividends to noncontrolling interests					(184)	(162)	(170)
	Changes in noncontrolling interests					(150)	-	-
	Tax benefits related to stock-based awards					-	-	2
	Common stock acquired					(747)	(977)	(4,039)
	Common stock sold					-	6	5
		Net cash used in financing activities				(15,130)	(9,293)	(7,037)
Effects of exchange rate changes on cash						314	(434)	(394)
Increase/(decrease) in cash and cash equivalents						(480)	(48)	(911)
Cash and cash equivalents at beginning of year						3,657	3,705	4,616
Cash and cash equivalents at end of year						3,177	3,657	3,705

The information in the Notes to Consolidated Financial Statements is an integral part of these statements.

66

CONSOLIDATED STATEMENT OF CHANGES IN EQUITY

		ExxonMobil Share of Equity
					Accumulated		Common
						Other	Stock	ExxonMobil			Non-
		Common		Earnings	Comprehensive		Held in		Share of	controlling		Total
		Stock	Reinvested			Income	Treasury		Equity		Interests	Equity
		(millions of dollars)
Balance as of December 31, 2014		10,792		408,384		(18,957)	(225,820)		174,399		6,665	181,064
	Amortization of stock-based awards	828		-		-	-		828		-	828
	Tax benefits related to stock-based awards	116		-		-	-		116		-	116
	Other	(124)		-		-	-		(124)		-	(124)
	Net income for the year	-		16,150		-	-		16,150		401	16,551
	Dividends - common shares	-		(12,090)		-	-		(12,090)		(170)	(12,260)
	Other comprehensive income	-		-		(4,554)	-		(4,554)		(897)	(5,451)
	Acquisitions, at cost	-		-		-	(4,039)		(4,039)		-	(4,039)
	Dispositions	-		-		-	125		125		-	125
Balance as of December 31, 2015		11,612		412,444		(23,511)	(229,734)		170,811		5,999	176,810
	Amortization of stock-based awards	796		-		-	-		796		-	796
	Tax benefits related to stock-based awards	30		-		-	-		30		-	30
	Other	(281)		-		-	-		(281)		-	(281)
	Net income for the year	-		7,840		-	-		7,840		535	8,375
	Dividends - common shares	-		(12,453)		-	-		(12,453)		(162)	(12,615)
	Other comprehensive income	-		-		1,272	-		1,272		133	1,405
	Acquisitions, at cost	-		-		-	(977)		(977)		-	(977)
	Dispositions	-		-		-	287		287		-	287
Balance as of December 31, 2016		12,157		407,831		(22,239)	(230,424)		167,325		6,505	173,830
	Amortization of stock-based awards	801		-		-	-		801		-	801
	Other	(380)		-		-	-		(380)		(52)	(432)
	Net income for the year	-		19,710		-	-		19,710		138	19,848
	Dividends - common shares	-		(13,001)		-	-		(13,001)		(184)	(13,185)
	Other comprehensive income	-		-		5,977	-		5,977		555	6,532
	Acquisitions, at cost	-		-		-	(828)		(828)		(150)	(978)
	Issued for acquisitions	2,078		-		-	5,711		7,789		-	7,789
	Dispositions	-		-		-	295		295		-	295
Balance as of December 31, 2017		14,656		414,540		(16,262)	(225,246)		187,688		6,812	194,500

			Held in
Common Stock Share Activity		Issued	Treasury	Outstanding
		(millions of shares)
Balance as of December 31, 2014		8,019	(3,818)		4,201
	Acquisitions	-	(48)		(48)
	Dispositions	-	3		3
Balance as of December 31, 2015		8,019	(3,863)		4,156
	Acquisitions	-	(12)		(12)
	Dispositions	-	4		4
Balance as of December 31, 2016		8,019	(3,871)		4,148
	Acquisitions	-	(10)		(10)
	Issued for acquisitions	-	96		96
	Dispositions	-	5		5
Balance as of December 31, 2017		8,019	(3,780)		4,239

The information in the Notes to Consolidated Financial Statements is an integral part of these statements.

67

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The accompanying consolidated financial statements and the supporting and supplemental material are the responsibility of the management of Exxon Mobil Corporation.

The Corporation’s principal business is energy, involving the worldwide exploration, production, transportation and sale of crude oil and natural gas (Upstream) and the manufacture, transportation and sale of petroleum products (Downstream). The Corporation is also a major worldwide manufacturer and marketer of petrochemicals (Chemical).

The preparation of financial statements in conformity with U.S. Generally Accepted Accounting Principles (GAAP) requires management to make estimates that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities. Actual results could differ from these estimates. Prior years’ data has been reclassified in certain cases to conform to the 2017 presentation basis.

1. Summary of Accounting Policies

Principles of Consolidation

The Consolidated Financial Statements include the accounts of subsidiaries the Corporation controls. 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”. The Corporation’s share of the net income of these companies is included in the Consolidated Statement of Income caption “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.

Evidence of loss in value that might indicate impairment of investments in companies accounted for on the equity method is assessed to determine if such evidence represents a loss in value of the Corporation’s investment that is other than temporary. 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 evidence of an other than temporary loss in fair value below carrying amount is determined, an impairment is recognized. 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.

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. Revenues are recognized when the products are delivered, which occurs when the customer has taken title and has assumed the risks and rewards of ownership, prices are fixed or determinable and collectibility is reasonably assured.

Revenues from the production of natural gas properties in which the Corporation has an interest with other producers are recognized on the basis of the Corporation’s net working interest. Differences between actual production and net working interest volumes are not significant.

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.

Taxes on Sales Transactions

Beginning in 2017, the Corporation revised its reporting of certain sales and value-added taxes imposed on and concurrent with revenue-producing transactions with customers and collected on behalf of governmental authorities (sales-based taxes). This changes reporting of sales-based taxes from gross reporting (included in both “Sales and other operating revenue” and “Sales-based taxes”) to net reporting (excluded from both “Sales and other operating revenue” and “Sales-based taxes”) in the Consolidated Statement of Income. This change in reporting was applied retrospectively and does not affect earnings. Similar taxes, for which the Corporation is not considered to be an agent for the government, continue to be reported on a gross basis.

68

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Derivative Instruments

The Corporation has the ability to use derivative instruments to offset exposures associated with commodity prices, foreign currency exchange rates and interest rates that arise from existing assets, liabilities and forecasted transactions. The gains and losses resulting from changes in the fair value of derivatives are recorded in income.

The Corporation may designate derivatives as fair value hedges or cash flow hedges. For fair value hedges, the gain or loss on the derivative and the offsetting loss or gain on the hedged item are recognized in current earnings. For cash flow hedges, the effective part of the hedge is initially reported as a component of other comprehensive income and subsequently reclassified into earnings in the period that the forecasted transaction affects earnings, and the ineffective part of the hedge is recognized immediately in 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.

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 gas reserves. 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 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 generally are 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.

69

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Impairment Assessment. The Corporation tests assets or groups of assets for recoverability on an ongoing basis whenever events or 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.

Asset valuation analyses performed as part of its asset management program and other profitability reviews assist the Corporation in assessing whether events or circumstances indicate the carrying amounts of any of its assets may not be recoverable.

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 and levels of prosperity. Because the lifespans of the vast majority of the Corporation’s major assets are measured in decades, the value of these assets is predominantly based on long-term views of future commodity prices and production costs. During the lifespan of these major assets, the Corporation expects that oil and gas prices will experience significant volatility, and consequently these assets will experience periods of higher earnings and periods of lower earnings, or even losses. In assessing whether the 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. While near-term prices are subject to wide fluctuations, longer-term price views are more stable and meaningful for purposes of assessing future cash flows.

When the industry experiences a prolonged and deep reduction in commodity prices, the market supply and demand conditions may result in changes to the Corporation’s long-term price or margin assumptions it uses for its capital investment decisions. To the extent those changes result in a significant reduction to its long-term oil price, natural gas price or margin ranges, the Corporation may consider that situation, in conjunction with other events and changes in circumstances such as a history of operating losses, an indicator of potential impairment for certain assets.

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. These prices represent discrete points in time and could be higher or lower than the Corporation’s long-term 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.

If events or 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 Corporation’s assumptions which are developed in the annual planning and budgeting process, 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, refining and chemical margins, volumes, costs, and foreign currency exchange rates. Volumes are based on projected field and facility production profiles, throughput, or sales. Where unproved reserves exist, an appropriately risk-adjusted amount of these reserves may be included in the evaluation. Cash flow estimates for impairment testing exclude the effects of derivative instruments.

An asset group is impaired if its estimated undiscounted cash flows are less than the asset’s carrying value. Impairments are measured by the amount by which the carrying value exceeds fair value. Fair value is based on market prices if an active market exists for the asset group, or discounted cash flows using a discount rate commensurate with the risk. Significant unproved properties are assessed for impairment individually, and valuation allowances against the capitalized costs are recorded based on the estimated economic chance of success and the length of time that the Corporation expects to hold the properties. Properties

70

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

that are not individually significant are aggregated by groups and amortized based on development risk and average holding period.

Other. 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. Losses on properties sold are recognized when incurred or when the properties are held for sale and the fair value of the properties is less than the carrying value.

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.

Asset Retirement Obligations and Environmental Liabilities

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. The costs associated with these liabilities are capitalized as part of the related assets and depreciated. Over time, the liabilities are accreted for the change in their present value.

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.

Downstream and Chemical operations primarily use the local currency. However, the U.S. dollar is used in countries with a history of high inflation (primarily in Latin America) and 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 Canada, the United Kingdom, Norway and continental 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.

Stock-Based Payments

The Corporation awards stock-based compensation to employees in the form of restricted stock and restricted stock units. Compensation expense is measured by the price of the stock at the date of grant and is recognized in income over the requisite service period.

71

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

2. Accounting Changes

Effective December 31, 2017, the Corporation revised its accounting policy election related to the reporting of certain sales and value-added taxes imposed on and concurrent with revenue-producing transactions with customers and collected on behalf of governmental authorities (sales-based taxes). This changes reporting of sales-based taxes from gross reporting (included in both “Sales and other operating revenue” and “Sales-based taxes”) to the preferable method of net reporting (excluded from both “Sales and other operating revenue” and “Sales-based taxes”) in the Consolidated Statement of Income. The revised election makes reported revenue more consistent with ExxonMobil’s role as an agent for the government and is more consistent with the reporting practices of other international major oil and gas companies and the largest U.S. companies. This change in accounting principle was applied retrospectively and does not affect net income attributable to ExxonMobil.

Also effective December 31, 2017, the Corporation reclassified U.S. Federal excise tax from “Sales-based taxes” to “Other taxes and duties”. For these taxes ExxonMobil is not considered to be an agent for the government and these taxes will continue to be reported gross. The amount reclassified was $3,110 million in 2016 and $3,044 million in 2015. This change in classification was applied retrospectively and does not affect net income attributable to ExxonMobil.

	2016			2015
	As Reported	Change	As Adjusted	As Reported	Change	As Adjusted
	(millions of dollars)
Sales and other operating revenue	218,608	(17,980)	200,628	259,488	(19,634)	239,854
Sales-based taxes	21,090	(21,090)	-	22,678	(22,678)	-
Other taxes and duties	25,910	3,110	29,020	27,265	3,044	30,309

Effective January 1, 2018, ExxonMobil adopted the Financial Accounting Standards Board’s standard, Revenue from Contracts with Customers, as amended. The standard establishes a single revenue recognition model for all contracts with customers, eliminates industry and transaction specific requirements, and expands disclosure requirements. The standard was adopted using the Modified Retrospective method, under which prior year results are not restated, but supplemental information on the impact of the new standard must be provided for 2018 results, if material. The standard is not expected to have a material impact on the Corporation’s financial statements. The cumulative effect of adoption of the new standard is de minimis.

Effective January 1, 2018, ExxonMobil adopted the Financial Accounting Standards Board’s Update, Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. The standard requires investments in equity securities other than consolidated subsidiaries and equity method investments to be measured at fair value with changes in the fair value recognized through net income. Companies can elect a modified approach for equity securities that do not have a readily determinable fair value. The standard is not expected to have a material impact on the Corporation’s financial statements.

Effective January 1, 2018, ExxonMobil adopted the Financial Accounting Standards Board’s Update, Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The update requires the service cost component of net benefit costs to be reported in the same line of the income statement as other compensation costs and the other components of net benefit costs (non-service costs) to be presented separately from the service cost component. Additionally, only the service cost component of net benefit costs is eligible for capitalization. The Corporation expects to add a new line “Non-service pension and postretirement benefit expense” to its Consolidated Statement of Income and expects to include all of these costs in its Corporate and financing segment. This line would reflect the non-service costs that were previously included in “Production and manufacturing expenses” and “Selling, general and administrative expenses”. The update is not expected to have a material impact on the Corporation’s financial statements.

Effective January 1, 2019, ExxonMobil will adopt the Financial Accounting Standards Board’s standard, Leases. The standard requires all leases with an initial term greater than one year be recorded on the balance sheet as an asset and a lease liability. The Corporation is gathering and evaluating data and recently acquired a system to facilitate implementation. We are progressing an assessment of the magnitude of the effect on the Corporation’s financial statements.

72

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

3. Miscellaneous Financial Information

Research and development expenses totaled $1,063 million in 2017, $1,058 million in 2016, and $1,008 million in 2015.

Net income included before‑tax aggregate foreign exchange transaction gains of $6 million in 2017 and $29 million in 2016, and a loss of $119 million in 2015.

In 2017, 2016, and 2015, net income included losses of $10 million, $295 million, and $186 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 $10.8 billion and $8.1 billion at December 31, 2017, and 2016, respectively.

Crude oil, products and merchandise as of year-end 2017 and 2016 consist of the following:

		2017	2016
		(billions of dollars)
Crude oil		4.6	3.9
Petroleum products		4.3	3.7
Chemical products		3.3	2.8
Gas/other		0.7	0.5
	Total	12.9	10.9

73

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

4.     Other Comprehensive Income Information

		Cumulative	Post-
		Foreign	retirement	Unrealized
		Exchange	Benefits	Change in
ExxonMobil Share of Accumulated Other		Translation	Reserves	Stock
Comprehensive Income		Adjustment	Adjustment	Investments	Total
		(millions of dollars)
Balance as of December 31, 2014		(5,952)	(12,945)	(60)	(18,957)
Current period change excluding amounts reclassified
	from accumulated other comprehensive income	(8,204)	2,202	33	(5,969)
Amounts reclassified from accumulated other
	comprehensive income	(14)	1,402	27	1,415
Total change in accumulated other comprehensive income		(8,218)	3,604	60	(4,554)
Balance as of December 31, 2015		(14,170)	(9,341)	-	(23,511)
Current period change excluding amounts reclassified
	from accumulated other comprehensive income	(331)	552	-	221
Amounts reclassified from accumulated other
	comprehensive income	-	1,051	-	1,051
Total change in accumulated other comprehensive income		(331)	1,603	-	1,272
Balance as of December 31, 2016		(14,501)	(7,738)	-	(22,239)
Current period change excluding amounts reclassified
	from accumulated other comprehensive income	4,879	(170)	-	4,709
Amounts reclassified from accumulated other
	comprehensive income	140	1,128	-	1,268
Total change in accumulated other comprehensive income		5,019	958	-	5,977
Balance as of December 31, 2017		(9,482)	(6,780)	-	(16,262)

Amounts Reclassified Out of Accumulated Other
Comprehensive Income - Before-tax Income/(Expense)		2017	2016	2015
		(millions of dollars)
Foreign exchange translation gain/(loss) included in net income
	(Statement of Income line: Other income)	(234)	-	14
Amortization and settlement of postretirement benefits reserves
	adjustment included in net periodic benefit costs(1)	(1,656)	(1,531)	(2,066)
Realized change in fair value of stock investments included in net income
	(Statement of Income line: Other income)	-	-	(42)

(1)   These accumulated other comprehensive income components are included in the computation of net periodic pension cost. (See Note 17 – Pension and Other Postretirement Benefits for additional details.)

Income Tax (Expense)/Credit For
Components of Other Comprehensive Income		2017	2016	2015
		(millions of dollars)
Foreign exchange translation adjustment		67	43	170
Postretirement benefits reserves adjustment (excluding amortization)		201	(247)	(1,192)
Amortization and settlement of postretirement benefits reserves
	adjustment included in net periodic benefit costs	(491)	(445)	(618)
Unrealized change in fair value of stock investments		-	-	(17)
Realized change in fair value of stock investments included in net income		-	-	(15)
Total		(223)	(649)	(1,672)

74

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

5. 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.

For 2017, the “Net (gain) on asset sales” on the Consolidated Statement of Cash Flows includes before-tax amounts from the sale of service stations in multiple countries, Upstream asset transactions in the U.S., and the sale of ExxonMobil’s operated Upstream business in Norway. For 2016, the number includes before-tax amounts from the sale of service stations in Canada, the sale of Upstream properties in the U.S., and the sale of aviation fueling operations across multiple countries. For 2015, the number includes before-tax amounts from the sale of service stations in Europe, the sale of Upstream properties in the U.S., the sale of ExxonMobil’s interests in Chemical and Refining joint ventures, and the sale of the Torrance refinery. These net gains are reported in “Other income” on the Consolidated Statement of Income.

In 2017, the “Additions/(reductions) in commercial paper, and debt with three months or less maturity” on the Consolidated Statement of Cash Flows includes a net $121 million repayment of commercial paper with maturity over three months. The gross amount issued was $3.6 billion, while the gross amount repaid was $3.7 billion. In 2016, the number includes a net $608 million addition of commercial paper with maturity over three months. The gross amount issued was $3.9 billion, while the gross amount repaid was $3.3 billion. In 2015, the number includes a net $358 million addition of commercial paper with maturity over three months. The gross amount issued was $8.1 billion, while the gross amount repaid was $7.7 billion.

In 2017, the Corporation completed the acquisitions of InterOil Corporation and of companies that own certain oil and gas properties in the Permian basin and other assets. These transactions included a significant noncash component. Additional information is provided in Note 20.

In 2015, ExxonMobil completed an asset exchange that resulted in value received of approximately $500 million including $100 million in cash. The noncash portion was not included in the “Sales of subsidiaries, investments, and property, plant and equipment” or the “All other items-net” lines on the Statement of Cash Flows. Capital leases of approximately $1 billion were not included in the “Additions to long-term debt” or “Additions to property, plant and equipment” lines on the Statement of Cash Flows.

	2017	2016	2015
	(millions of dollars)
Cash payments for interest	1,132	818	586
Cash payments for income taxes	7,510	4,214	7,269

6. Additional Working Capital Information

			Dec. 31	Dec. 31
			2017	2016
			(millions of dollars)
Notes and accounts receivable
	Trade, less reserves of $72 million and $75 million		21,274	16,033
	Other, less reserves of $539 million and $627 million		4,323	5,361
		Total	25,597	21,394
Notes and loans payable
	Bank loans		115	143
	Commercial paper		13,049	10,727
	Long-term debt due within one year		4,766	2,960
		Total	17,930	13,830
Accounts payable and accrued liabilities
	Trade payables		21,701	17,801
	Payables to equity companies		5,453	4,748
	Accrued taxes other than income taxes		3,311	2,653
	Other		6,331	5,991
		Total	36,796	31,193

The Corporation has short-term committed lines of credit of $5.4 billion which were unused as of December 31, 2017. These lines are available for general corporate purposes.

The weighted-average interest rate on short-term borrowings outstanding was 1.3 percent and 0.6 percent at December 31, 2017, and 2016, respectively.

75

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

7. 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, and natural gas marketing in North America; natural gas exploration, production and distribution in Europe; and exploration, production, liquefied natural gas (LNG) operations, refining operations, petrochemical manufacturing, and fuel sales in Asia and the Middle East. Also included are several refining, petrochemical manufacturing and marketing ventures.

The share of total equity company revenues from sales to ExxonMobil consolidated companies was 15 percent, 14 percent and 15 percent in the years 2017, 2016 and 2015, 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.

In 2013 and 2014, the Corporation and Rosneft established various entities to conduct exploration and research activities. In 2014, the European Union and United States imposed sanctions relating to the Russian energy sector. In the latter half of 2017, the United States codified and expanded sanctions against Russia. With respect to the foregoing, the Corporation and its affiliates continue to comply with all applicable laws, rules and regulations. In late 2017, the Corporation decided to withdraw from these joint ventures. The Corporation expects it will formally initiate the withdrawal in 2018. The decision to withdraw resulted in an after-tax loss of $0.2 billion.

In 2017, the Corporation invested about $3 billion to acquire shares in four joint venture companies, resulting in a 25 percent indirect interest in the natural gas-rich Area 4 block offshore Mozambique. The transaction was completed on December 13, 2017. The investments are accounted for using the equity method of accounting.

		2017			2016			2015
Equity Company			ExxonMobil			ExxonMobil			ExxonMobil
Financial Summary		Total		Share	Total		Share	Total		Share
		(millions of dollars)
Total revenues		94,791		29,340	80,247		24,668	111,866		34,297
Income before income taxes		29,748		8,498	22,269		6,509	36,379		10,670
Income taxes		8,421		2,236	6,334		1,701	11,048		3,019
	Income from equity affiliates	21,327		6,262	15,935		4,808	25,331		7,651
Current assets		35,367		12,050	34,412		11,392	32,879		11,244
Long-term assets		122,221		34,931	109,646		32,357	109,684		32,878
	Total assets	157,588		46,981	144,058		43,749	142,563		44,122
Current liabilities		21,725		6,348	20,507		5,765	22,947		6,738
Long-term liabilities		59,736		17,056	62,110		17,288	60,388		17,165
	Net assets	76,127		23,577	61,441		20,696	59,228		20,219

76

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

A list of significant equity companies as of December 31, 2017, together with the Corporation’s percentage ownership interest, is detailed below:

	Percentage
	Ownership
	Interest
Upstream
Aera Energy LLC	48
Barzan Gas Company Limited	7
BEB Erdgas und Erdoel GmbH & Co. KG	50
Cameroon Oil Transportation Company S.A.	41
Cross Timbers Energy, LLC	50
Golden Pass LNG Terminal LLC	18
Marine Well Containment Company LLC	10
Mozambique Rovuma Venture, S.p.A.	36
Nederlandse Aardolie Maatschappij B.V.	50
Qatar Liquefied Gas Company Limited (2)	24
Ras Laffan Liquefied Natural Gas Company Limited	25
Ras Laffan Liquefied Natural Gas Company Limited (II)	31
Ras Laffan Liquefied Natural Gas Company Limited (3)	30
South Hook LNG Terminal Company Limited	24
Tengizchevroil, LLP	25
Terminale GNL Adriatico S.r.l.	71
Downstream
Fujian Refining & Petrochemical Co. Ltd.	25
Permian Express Partners LLC	12
Saudi Aramco Mobil Refinery Company Ltd.	50
Chemical
Al-Jubail Petrochemical Company	50
Infineum Italia s.r.l.	50
Infineum Singapore Pte. Ltd.	50
Infineum USA L.P.	50
Saudi Yanbu Petrochemical Co.	50

77

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

8. Investments, Advances and Long-Term Receivables

			Dec. 31,	Dec. 31,
			2017	2016
			(millions of dollars)
Companies carried at equity in underlying assets
	Investments		24,354	20,810
	Advances		9,112	9,443
		Total equity company investments and advances	33,466	30,253
Companies carried at cost or less and stock investments carried at fair value			174	154
Long-term receivables and miscellaneous investments at cost or less, net of reserves
	of $5,432 million and $4,141 million		5,520	4,695
		Total	39,160	35,102

9. Property, Plant and Equipment and Asset Retirement Obligations

		December 31, 2017		December 31, 2016
Property, Plant and Equipment		Cost	Net	Cost	Net
		(millions of dollars)
Upstream		371,904	200,291	355,265	195,904
Downstream		50,343	21,732	47,915	20,588
Chemical		37,966	20,117	34,098	17,401
Other		16,972	10,490	16,637	10,331
	Total	477,185	252,630	453,915	244,224

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 relies in part on the Corporation’s planning and budgeting cycle. As part of its 2017 annual planning and budgeting cycle, the Corporation identified emerging trends such as increasing estimates of available natural gas supplies and ongoing reductions in the industry’s costs of supply for natural gas that resulted in a reduction to the Corporation’s long-term natural gas price outlooks. Based in part on these trends, the Corporation concluded that events and circumstances indicated that the carrying value of certain long-lived assets, notably North America natural gas assets and certain other assets across the remainder of its Upstream operations, may not be recoverable. Accordingly, an impairment assessment was performed which indicated that the vast majority of asset groups assessed have future undiscounted cash flow estimates that exceed their carrying values. However, the carrying values for certain asset groups in the United States exceeded the estimated cash flows. As a result, the Corporation’s fourth quarter 2017 results include a before-tax charge of $0.8 billion to reduce the carrying value of those assets to fair value. The asset groups subject to this impairment charge are primarily dry gas operations with little additional development potential. In addition, the Corporation made a decision to cease development planning activities and further allocation of capital to certain non-producing assets outside the United States resulting in a before-tax charge of $0.9 billion to reduce the carrying value of those assets that are included in Property, Plant and Equipment. Other impairments during the year resulted in a before-tax charge of $0.3 billion. The impairment charges are recognized primarily in the line “Depreciation and depletion” on the Consolidated Statement of Income.

The assessment of fair values required the use of Level 3 inputs and assumptions that are based upon the views of a likely market participant. The principal parameters used to establish fair values included estimates of both proved and unproved reserves, future commodity prices which were consistent with the average of third-party industry experts and government agencies, drilling and development costs, discount rates ranging from 5.5 percent to 8 percent depending on the characteristics of the asset group, and comparable market transactions. Factors which could put further assets at risk of impairment in the future include reductions in the Corporation’s long-term price outlooks, changes in the allocation of capital, and operating cost increases which exceed the pace of efficiencies or the pace of oil and natural gas price increases. However, due to the inherent difficulty in predicting future commodity prices, and the relationship between industry prices and costs, it is not practicable to reasonably estimate the existence or range of any potential future impairment charges related to the Corporation’s long-lived assets.

Accumulated depreciation and depletion totaled $224,555 million at the end of 2017 and $209,691 million at the end of 2016. Interest capitalized in 2017, 2016 and 2015 was $749 million, $708 million and $482 million, respectively.

78

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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 downstream and chemical facilities generally become firm at the time the facilities are permanently shut down and dismantled. These obligations may include the costs of asset disposal and additional soil remediation. However, these sites 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:

		2017	2016
		(millions of dollars)
Beginning balance		13,243	13,704
	Accretion expense and other provisions	780	740
	Reduction due to property sales	(906)	(134)
	Payments made	(730)	(549)
	Liabilities incurred	128	204
	Foreign currency translation	611	(513)
	Revisions	(421)	(209)
Ending balance		12,705	13,243

The long-term Asset Retirement Obligations were $11,928 million and $12,352 million at December 31, 2017, and 2016, respectively, and are included in Other long-term obligations.

79

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

10. 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 as well as an aging summary of those costs.

Change in capitalized suspended exploratory well costs:

			2017	2016	2015
			(millions of dollars)
Balance beginning at January 1			4,477	4,372	3,587
	Additions pending the determination of proved reserves		906	180	847
	Charged to expense		(1,205)	(111)	(5)
	Reclassifications to wells, facilities and equipment based on the
		determination of proved reserves	(497)	-	(43)
	Divestments/Other		19	36	(14)
Ending balance at December 31			3,700	4,477	4,372
Ending balance attributed to equity companies included above			306	707	696

Period end capitalized suspended exploratory well costs:

			2017	2016	2015
			(millions of dollars)
Capitalized for a period of one year or less			906	180	847
	Capitalized for a period of between one and five years		1,345	2,981	2,386
	Capitalized for a period of between five and ten years		1,064	911	826
	Capitalized for a period of greater than ten years		385	405	313
Capitalized for a period greater than one year - subtotal			2,794	4,297	3,525
		Total	3,700	4,477	4,372

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.

			2017	2016	2015
Number of projects that only have exploratory well costs capitalized for a period
	of one year or less		11	2	4
Number of projects that have exploratory well costs capitalized for a period
	of greater than one year		46	58	55
		Total	57	60	59

Of the 46 projects that have exploratory well costs capitalized for a period greater than one year as of December 31, 2017, 10 projects have drilling in the preceding year or exploratory activity planned in the next two years, while the remaining 36 projects are those with completed exploratory activity progressing toward development.

80

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The table below provides additional detail for those 36 projects, which total $1,639 million.

			Years
		Dec. 31,	Wells
Country/Project		2017	Drilled	Comment
	(millions of dollars)
Angola
- AB32 Central NE Hub		69	2006 - 2014	Evaluating development plan for tieback to existing production facilities.
- Kaombo Split Hub		20	2005 - 2006	Evaluating development plan to tie into planned production facilities.
Phase 2
- Perpetua-Zinia-Acacia		15	2008 - 2009	Oil field near Pazflor development, awaiting capacity in existing/planned
				infrastructure.
Argentina
- La Invernada		72	2014	Evaluating development plan to tie into planned infrastructure.
Australia
- East Pilchard		8	2001	Gas field near Kipper/Tuna development, awaiting capacity in existing/
				planned infrastructure.
- SE Longtom		12	2010	Gas field near Tuna development, awaiting capacity in existing/planned
				infrastructure.
- SE Remora		36	2010	Gas field near Marlin development, awaiting capacity in existing/planned
				infrastructure.
Indonesia
- Kedung Keris		11	2011	Development activity under way to tie into planned production facilities.
Iraq
- Kurdistan Pirmam		109	2015	Evaluating commercialization alternatives, while waiting for government
				approval to enter Gas Holding Period.
Kazakhstan
- Kairan		53	2004 - 2007	Evaluating commercialization and field development alternatives, while
				continuing discussions with the government regarding the development plan.
- Kalamkas		18	2006 - 2009	Evaluating development alternatives, while continuing discussions with the
				government regarding development plan.
Malaysia
- Bindu		2	1995	Awaiting capacity in existing/planned infrastructure.
Nigeria
- Bolia		15	2002 - 2006	Evaluating development plan, while continuing discussions with the
				government regarding regional hub strategy.
- Bosi		79	2002 - 2006	Development activity under way, while continuing discussions with the
				government regarding development plan.
- Bosi Central		16	2006	Development activity under way, while continuing discussions with the
				government regarding development plan.
- Erha Northeast		26	2008	Evaluating development plan for tieback to existing production facilities.
- OML 138 Ukot SW		41	2014	Evaluating development plan for tieback to existing production facilities.
- OML 138 Ukot SS		13	2015	Evaluating development plan for tieback to existing production facilities.
- Pegi		32	2009	Awaiting capacity in existing/planned infrastructure.
- Satellite Field		12	2013	Evaluating development plan to tie into planned production facilities.
Development Phase 2
- Other (3 projects)		7	2002	Evaluating and pursuing development of several additional discoveries.
Norway
- Gamma		14	2008 - 2009	Evaluating development plan for tieback to existing production facilities.
- Lavrans		16	1995 - 1999	Evaluating development plan, awaiting capacity in existing Kristin
				production facility.
- Other (7 projects)		27	2008 - 2014	Evaluating development plans, including potential for tieback to existing
				production facilities.
Papua New Guinea
- Juha		28	2007	Progressing development plans to tie into existing LNG facilities.

81

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

			Years
		Dec. 31,	Wells
Country/Project		2017	Drilled	Comment
	(millions of dollars)
Republic of Congo
- Mer Tres Profonde Sud		56	2000 - 2007	Evaluating development alternatives, while continuing discussions with the
				government regarding development plan.
Romania
- Neptun Deep		536	2012 - 2016	Continuing discussions with the government regarding development plan.
Vietnam
- Blue Whale		296	2011 - 2015	Development planning activity under way, while continuing commercial
				discussions with the government.
Total 2017 (36 projects)		1,639

11. Leased Facilities

At December 31, 2017, the Corporation and its consolidated subsidiaries held noncancelable operating charters and leases covering drilling equipment, tankers, service stations and other properties with minimum undiscounted lease commitments totaling $4,290 million as indicated in the table. Estimated related sublease rental income from noncancelable subleases totals $36 million.

	Lease Payments
	Under Minimum Commitments
		Drilling Rigs
		and Related
		Equipment	Other	Total
		(millions of dollars)
2018		169	767	936
2019		131	537	668
2020		101	397	498
2021		70	297	367
2022		41	259	300
2023 and beyond		99	1,422	1,521
Total		611	3,679	4,290

Net rental cost under both cancelable and noncancelable operating leases incurred during 2017, 2016 and 2015 were as follows:

			2017	2016	2015
			(millions of dollars)
Rental cost
	Drilling rigs and related equipment		792	1,274	1,853
	Other (net of sublease rental income)		1,826	1,817	2,076
		Total	2,618	3,091	3,929

82

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

12. Earnings Per Share

Earnings per common share	2017	2016	2015
Net income attributable to ExxonMobil(millions of dollars)	19,710	7,840	16,150
Weighted average number of common shares outstanding(millions of shares)	4,256	4,177	4,196
Earnings per common share(dollars) (1)	4.63	1.88	3.85
Dividends paid per common share (dollars)	3.06	2.98	2.88

(1)   The earnings per common share and earnings per common share - assuming dilution are the same in each period shown.

13. Financial Instruments and Derivatives

Financial Instruments. The fair value of financial instruments is determined by reference to observable market data and other valuation techniques as appropriate. The only category of financial instruments where the difference between fair value and recorded book value is notable is long-term debt. The estimated fair value of total long-term debt, excluding capitalized lease obligations, was $23.7 billion and $28.0 billion at December 31, 2017, and 2016, respectively, as compared to recorded book values of $23.1 billion and $27.7 billion at December 31, 2017, and 2016, respectively.

The fair value of long-term debt by hierarchy level at December 31, 2017, is: Level 1 $23,529 million; Level 2 $170 million; and Level 3 $6 million.

Derivative Instruments. The Corporation’s size, strong capital structure, geographic diversity and the complementary nature of the Upstream, Downstream and Chemical businesses reduce the Corporation’s enterprise-wide risk from changes in interest rates, currency rates and commodity prices. In addition, the Corporation uses commodity-based contracts, including derivatives, to manage commodity price risk and for trading purposes. 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 believes that there are no material market or credit risks to the Corporation’s financial position, results of operations or liquidity as a result of the derivatives. The Corporation maintains a system of controls that includes the authorization, reporting and monitoring of derivative activity.

The estimated fair value of derivative instruments outstanding and recorded on the balance sheet was a net liability of $38 million at year-end 2017 and a net liability of $22 million at year-end 2016. Assets and liabilities associated with derivatives are usually recorded either in “Other current assets” or “Accounts payable and accrued liabilities”.

The Corporation’s fair value measurement of its derivative instruments use either Level 1 or Level 2 inputs.

The Corporation recognized a before-tax gain or (loss) related to derivative instruments of $(99) million, $(81) million and $39 million during 2017, 2016 and 2015, respectively. Income statement effects associated with derivatives are usually recorded either in “Sales and other operating revenue” or “Crude oil and product purchases”.

83

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

14. Long-Term Debt

At December 31, 2017, long-term debt consisted of $23,736 million due in U.S. dollars and $670 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 $4,766 million, which matures within one year and is included in current liabilities. The amounts of long-term debt, including capitalized lease obligations, maturing in each of the four years after December 31, 2018, in millions of dollars, are: 2019 – $4,045; 2020 – $1,617; 2021 – $2,549; and 2022 – $1,835. At December 31, 2017, the Corporation’s unused long-term credit lines were $0.2 billion.

Summarized long-term debt at year-end 2017 and 2016 are shown in the table below:

			Average
			Rate (1)	2017	2016
				(millions of dollars)
Exxon Mobil Corporation
	1.305% notes due 2018			-	1,600
	1.439% notes due 2018			-	1,000
	Floating-rate notes due 2018 (Issued 2016)			-	750
	Floating-rate notes due 2018 (Issued 2015)			-	500
	1.819% notes due 2019			1,750	1,750
	1.708% notes due 2019			1,250	1,250
	Floating-rate notes due 2019 (Issued 2014)		1.345%	500	500
	Floating-rate notes due 2019 (Issued 2016)		1.953%	250	250
	1.912% notes due 2020			1,500	1,500
	2.222% notes due 2021			2,500	2,500
	2.397% notes due 2022			1,150	1,150
	Floating-rate notes due 2022		1.557%	500	500
	2.726% notes due 2023			1,250	1,250
	3.176% notes due 2024			1,000	1,000
	2.709% notes due 2025			1,750	1,750
	3.043% notes due 2026			2,500	2,500
	3.567% notes due 2045			1,000	1,000
	4.114% notes due 2046			2,500	2,500
XTO Energy Inc.(2)
	5.500% senior notes due 2018			-	371
	6.500% senior notes due 2018			-	453
	6.100% senior notes due 2036			195	197
	6.750% senior notes due 2037			302	304
	6.375% senior notes due 2038			232	233
Mobil Corporation
	8.625% debentures due 2021			250	249
Industrial revenue bonds due 2019-2051			0.764%	2,559	2,559
Other U.S. dollar obligations				162	103
Other foreign currency obligations				34	57
Capitalized lease obligations			8.504%	1,327	1,225
Debt issuance costs				(55)	(69)
		Total long-term debt		24,406	28,932

(1)   Average effective interest rate for debt and average imputed interest rate for capital leases at December 31, 2017.

(2)   Includes premiums of $102 million in 2017 and $138 million in 2016.

84

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

15. Incentive Program

The 2003 Incentive Program provides for grants of stock options, stock appreciation rights (SARs), restricted stock and other forms of award. 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 2017, remaining shares available for award under the 2003 Incentive Program were 89million.  

Restricted Stock and Restricted Stock Units. Awards totaling 8,916 thousand, 9,583 thousand, and 9,681 thousand of restricted (nonvested) common stock units were granted in 2017, 2016 and 2015, 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. 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 or retirement, whichever occurs later, for the remaining 50 percent of the award.

The Corporation has purchased shares in the open market and through negotiated transactions to offset shares or units settled in shares issued in conjunction with benefit plans and programs. Purchases may be discontinued at any time without prior notice.

The following tables summarize information about restricted stock and restricted stock units for the year ended December 31, 2017.

	2017
		Weighted Average
		Grant-Date
Restricted stock and units outstanding	Shares	Fair Value per Share
	(thousands)	(dollars)
Issued and outstanding at January 1	43,833		84.43
2016 award issued in 2017	9,582		87.70
Vested	(10,136)		80.71
Forfeited	(2,201)		80.11
Issued and outstanding at December 31	41,078		86.34

Value of restricted stock and units	2017	2016	2015
Grant price (dollars)	81.89	87.70	81.27
Value at date of grant:	(millions of dollars)
Restricted stock and units settled in stock	667	771	727
Units settled in cash	63	69	60
Total value	730	840	787

As of December 31, 2017, there was $2,049 million of unrecognized compensation cost related to the nonvested restricted awards. This cost is expected to be recognized over a weighted-average period of 4.5 years. The compensation cost charged against income for the restricted stock and restricted stock units was $856 million, $880 million and $855 million for 2017, 2016 and 2015, respectively. The income tax benefit recognized in income related to this compensation expense was $78 million, $80 million and $78 million for the same periods, respectively. The fair value of shares and units vested in 2017, 2016 and 2015 was $826 million, $851 million and $808 million, respectively. Cash payments of $64 million, $67 million and $64 million for vested restricted stock units settled in cash were made in 2017, 2016 and 2015, respectively.

85

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

16. 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. ExxonMobil will continue to defend itself vigorously in these matters. Based on a consideration of all relevant facts and circumstances, the Corporation does not believe the ultimate outcome of any currently pending lawsuit against ExxonMobil will have a material adverse effect upon the Corporation’s operations, financial condition, or financial statements taken as a whole.

Other Contingencies. The Corporation and certain of its consolidated subsidiaries were contingently liable at December 31, 2017, 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.

					December 31, 2017
			Equity Company		Other Third-Party
			Obligations (1)		Obligations		Total
					(millions of dollars)
Guarantees
	Debt-related			98		270	368
	Other			1,191		4,514	5,705
		Total		1,289		4,784	6,073
(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.

In accordance with a nationalization decree issued by Venezuela’s president in February 2007, by May 1, 2007, a subsidiary of the Venezuelan National Oil Company (PdVSA) assumed the operatorship of the Cerro Negro Heavy Oil Project. This Project had been operated and owned by ExxonMobil affiliates holding a 41.67 percent ownership interest in the Project. The decree also required conversion of the Cerro Negro Project into a “mixed enterprise” and an increase in PdVSA’s or one of its affiliate’s ownership interest in the Project, with the stipulation that if ExxonMobil refused to accept the terms for the formation of the mixed enterprise within a specified period of time, the government would “directly assume the activities” carried out by the joint venture. ExxonMobil refused to accede to the terms proffered by the government, and on June 27, 2007, the government expropriated ExxonMobil’s 41.67 percent interest in the Cerro Negro Project.

On September 6, 2007, affiliates of ExxonMobil filed a Request for Arbitration with the International Centre for Settlement of Investment Disputes (ICSID). The ICSID Tribunal issued a decision on June 10, 2010, finding that it had jurisdiction to proceed on the basis of the Netherlands-Venezuela Bilateral Investment Treaty. On October 9, 2014, the ICSID Tribunal issued its final award finding in favor of the ExxonMobil affiliates and awarding $1.6 billion as of the date of expropriation, June 27, 2007, and interest from that date at 3.25 percent compounded annually until the date of payment in full. The Tribunal also noted that one of the Cerro Negro Project agreements provides a mechanism to prevent double recovery between the ICSID award and all or part of an earlier award of $908 million to an ExxonMobil affiliate, Mobil Cerro Negro, Ltd., against PdVSA and a PdVSA affiliate, PdVSA CN, in an arbitration under the rules of the International Chamber of Commerce.

On February 2, 2015, Venezuela filed a Request for Annulment of the ICSID award. On March 9, 2017, the ICSID Committee hearing the Request for Annulment issued a decision partially annulling the award of the Tribunal issued on October 9, 2014. The Committee affirmed the compensation due for the La Ceiba project and for export curtailments at the Cerro Negro project, but annulled the portion of the award relating to the Cerro Negro Project’s expropriation ($1.4 billion) based on its determination that the prior Tribunal failed to adequately explain why the cap on damages in the indemnity owed by PdVSA did not affect or limit the amount owed for the expropriation of the Cerro Negro project. As a result, ExxonMobil retains an award for $260 million (including accrued interest). ExxonMobil reached an agreement with Venezuela for full payment of the $260 million and Venezuela has begun performing on it. The agreement does not impact ExxonMobil’s ability to re-arbitrate the issue that was the basis for the annulment in a new ICSID arbitration proceeding.

86

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The United States District Court for the Southern District of New York entered judgment on the ICSID award on October 10, 2014. Motions filed by Venezuela to vacate that judgment on procedural grounds and to modify the judgment by reducing the rate of interest to be paid on the ICSID award from the entry of the court’s judgment, until the date of payment, were denied on February 13, 2015, and March 4, 2015, respectively. On March 9, 2015, Venezuela filed a notice of appeal of the court’s actions on the two motions. On July 11, 2017, the United States Court of Appeals for the Second Circuit rendered its opinion overturning the District Court’s decision and vacating the judgment on the grounds that a different procedure should have been used to reduce the award to judgment. The Corporation is evaluating next steps.

A stay of the District Court’s judgment has continued pending the completion of the Second Circuit appeal. The net impact of these matters on the Corporation’s consolidated financial results cannot be reasonably estimated. Regardless, the Corporation does not expect the resolution to have a material effect upon the Corporation’s operations or financial condition.

An affiliate of ExxonMobil is one of the Contractors under a Production Sharing Contract (PSC) with the Nigerian National Petroleum Corporation (NNPC) covering the Erha block located in the offshore waters of Nigeria. ExxonMobil's affiliate is the operator of the block and owns a 56.25 percent interest under the PSC. The Contractors are in dispute with NNPC regarding NNPC's lifting of crude oil in excess of its entitlement under the terms of the PSC. In accordance with the terms of the PSC, the Contractors initiated arbitration in Abuja, Nigeria, under the Nigerian Arbitration and Conciliation Act. On October 24, 2011, a three-member arbitral Tribunal issued an award upholding the Contractors' position in all material respects and awarding damages to the Contractors jointly in an amount of approximately $1.8 billion plus $234 million in accrued interest. The Contractors petitioned a Nigerian federal court for enforcement of the award, and NNPC petitioned the same court to have the award set aside. On May 22, 2012, the court set aside the award. The Contractors appealed that judgment to the Court of Appeal, Abuja Judicial Division. On July 22, 2016, the Court of Appeal upheld the decision of the lower court setting aside the award. On October 21, 2016, the Contractors appealed the decision to the Supreme Court of Nigeria. In June 2013, the Contractors filed a lawsuit against NNPC in the Nigerian federal high court in order to preserve their ability to seek enforcement of the PSC in the courts if necessary. Following dismissal by this court, the Contractors appealed to the Nigerian Court of Appeal in June 2016. In October 2014, the Contractors filed suit in the United States District Court for the Southern District of New York to enforce, if necessary, the arbitration award against NNPC assets residing within that jurisdiction. NNPC has moved to dismiss the lawsuit. The stay in the proceedings in the Southern District of New York has been lifted. At this time, the net impact of this matter on the Corporation's consolidated financial results cannot be reasonably estimated. However, regardless of the outcome of enforcement proceedings, the Corporation does not expect the proceedings to have a material effect upon the Corporation's operations or financial condition.

87

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

17. 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
		U.S.		Non-U.S.		Benefits
		2017	2016	2017	2016	2017	2016
		(percent)
Weighted-average assumptions used to determine
	benefit obligations at December 31
	Discount rate	3.80	4.25	2.80	3.00	3.80	4.25
	Long-term rate of compensation increase	5.75	5.75	4.30	4.00	5.75	5.75
		(millions of dollars)
Change in benefit obligation
	Benefit obligation at January 1	19,960	19,583	25,196	25,117	7,800	8,282
	Service cost	784	810	596	585	129	153
	Interest cost	798	793	772	844	317	344
	Actuarial loss/(gain)	733	250	250	1,409	231	(560)
	Benefits paid (1) (2)	(2,964)	(1,476)	(1,291)	(1,228)	(543)	(537)
	Foreign exchange rate changes	-	-	2,484	(1,520)	40	16
	Amendments, divestments and other	(1)	-	(44)	(11)	126	102
Benefit obligation at December 31		19,310	19,960	27,963	25,196	8,100	7,800
Accumulated benefit obligation at December 31		15,557	16,245	25,557	22,867	-	-

(1)Benefit payments for funded and unfunded plans.

(2)For 2017 and 2016, other postretirement benefits paid are net of $16 million and $22 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 4.5 percent in 2019 and subsequent years. A one-percentage-point increase in the health care cost trend rate would increase service and interest cost by $72 million and the postretirement benefit obligation by $696 million. A one-percentage-point decrease in the health care cost trend rate would decrease service and interest cost by $53 million and the postretirement benefit obligation by $536 million.

		Pension Benefits				Other Postretirement
		U.S.		Non-U.S.		Benefits
		2017	2016	2017	2016	2017	2016
		(millions of dollars)
Change in plan assets
	Fair value at January 1	12,793	10,985	19,043	18,417	411	414
	Actual return on plan assets	1,831	949	1,442	2,443	40	20
	Foreign exchange rate changes	-	-	1,776	(1,452)	-	-
	Company contribution	619	2,068	440	492	34	36
	Benefits paid(1)	(2,461)	(1,209)	(902)	(857)	(58)	(59)
	Other	-	-	(338)	-	-	-
Fair value at December 31		12,782	12,793	21,461	19,043	427	411

(1)   Benefit payments for funded plans.

88

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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
		U.S.		Non-U.S.
		2017	2016	2017	2016
		(millions of dollars)
Assets in excess of/(less than) benefit obligation
	Balance at December 31
	Funded plans	(3,957)	(4,306)	413	212
	Unfunded plans	(2,571)	(2,861)	(6,915)	(6,365)
Total		(6,528)	(7,167)	(6,502)	(6,153)

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
		U.S.		Non-U.S.		Benefits
		2017	2016	2017	2016	2017	2016
		(millions of dollars)
Assets in excess of/(less than) benefit obligation
	Balance at December 31 (1)	(6,528)	(7,167)	(6,502)	(6,153)	(7,673)	(7,389)
Amounts recorded in the consolidated balance
	sheet consist of:
	Other assets	-	-	1,403	1,035	-	-
	Current liabilities	(276)	(409)	(338)	(294)	(360)	(361)
	Postretirement benefits reserves	(6,252)	(6,758)	(7,567)	(6,894)	(7,313)	(7,028)
Total recorded		(6,528)	(7,167)	(6,502)	(6,153)	(7,673)	(7,389)
Amounts recorded in accumulated other
	comprehensive income consist of:
	Net actuarial loss/(gain)	3,982	5,354	5,586	5,629	1,595	1,468
	Prior service cost	11	15	(143)	(123)	(397)	(430)
Total recorded in accumulated other
	comprehensive income	3,993	5,369	5,443	5,506	1,198	1,038

(1)     Fair value of assets less benefit obligation shown on the preceding page.

89

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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.

									Other
			Pension Benefits						Postretirement
			U.S.			Non-U.S.			Benefits
			2017	2016	2015	2017	2016	2015	2017	2016	2015
Weighted-average assumptions used to
	determine net periodic benefit cost for
	years ended December 31	(percent)
	Discount rate		4.25	4.25	4.00	3.00	3.60	3.10	4.25	4.25	4.00
	Long-term rate of return on funded assets		6.50	6.50	7.00	5.20	5.25	5.90	6.50	6.50	7.00
	Long-term rate of compensation increase		5.75	5.75	5.75	4.00	4.80	5.30	5.75	5.75	5.75
Components of net periodic benefit cost			(millions of dollars)
	Service cost		784	810	864	596	585	689	129	153	170
	Interest cost		798	793	785	772	844	850	317	344	346
	Expected return on plan assets		(775)	(726)	(830)	(1,000)	(927)	(1,094)	(24)	(25)	(28)
	Amortization of actuarial loss/(gain)		438	492	544	476	536	730	96	153	206
	Amortization of prior service cost		5	6	6	47	54	87	(33)	(30)	(24)
	Net pension enhancement and
	curtailment/settlement cost		609	319	499	19	2	22	-	-	-
Net periodic benefit cost			1,859	1,694	1,868	910	1,094	1,284	485	595	670
Changes in amounts recorded in accumulated
	other comprehensive income:
	Net actuarial loss/(gain)		(324)	27	592	(191)	(156)	(1,375)	215	(555)	(589)
	Amortization of actuarial (loss)/gain		(1,047)	(811)	(1,043)	(495)	(538)	(752)	(96)	(153)	(206)
	Prior service cost/(credit)		-	-	-	111	32	(401)	-	-	(535)
	Amortization of prior service (cost)/credit		(5)	(6)	(6)	(47)	(54)	(87)	33	30	24
	Foreign exchange rate changes		-	-	-	559	(108)	(1,126)	8	5	(31)
Total recorded in other comprehensive income			(1,376)	(790)	(457)	(63)	(824)	(3,741)	160	(673)	(1,337)
Total recorded in net periodic benefit cost and
	other comprehensive income, before tax		483	904	1,411	847	270	(2,457)	645	(78)	(667)

Costs for defined contribution plans were $384 million, $399 million and $405 million in 2017, 2016 and 2015, respectively.

90

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

A summary of the change in accumulated other comprehensive income is shown in the table below:

		Total Pension and
		Other Postretirement Benefits
		2017	2016	2015
		(millions of dollars)
(Charge)/credit to other comprehensive income, before tax
	U.S. pension	1,376	790	457
	Non-U.S. pension	63	824	3,741
	Other postretirement benefits	(160)	673	1,337
Total (charge)/credit to other comprehensive income, before tax		1,279	2,287	5,535
(Charge)/credit to income tax (see Note 4)		(290)	(692)	(1,810)
(Charge)/credit to investment in equity companies		(43)	(16)	81
(Charge)/credit to other comprehensive income including noncontrolling
	interests, after tax	946	1,579	3,806
Charge/(credit) to equity of noncontrolling interests		12	24	(202)
(Charge)/credit to other comprehensive income attributable to ExxonMobil		958	1,603	3,604

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.

Studies are periodically conducted to establish the preferred target asset allocation percentages. The target asset allocation for the U.S. benefit plans and the major non-U.S. plans is 30 percent equity securities and 70 percent debt securities. The equity targets for the U.S. and certain non-U.S. plans include a small allocation to private equity partnerships that primarily focus on early-stage venture capital of 5 percent and 3 percent, respectively.

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.

91

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The 2017 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
			Fair Value Measurement						Fair Value Measurement
			at December 31, 2017, Using:						at December 31, 2017, Using:
							Net							Net
							Asset							Asset
			Level 1	Level 2		Level 3	Value (1)	Total	Level 1		Level 2		Level 3	Value (1)	Total
			(millions of dollars)
Asset category:
	Equity securities
		U.S.	-	-		-	1,665	1,665	-		-		-	2,967	2,967
		Non-U.S.	-	-		-	1,570	1,570	111	(2)	-		-	2,903	3,014
	Private equity		-	-		-	532	532	-		-		-	522	522
	Debt securities
		Corporate	-	5,260	(3)	-	1	5,261	-		131	(3)	-	5,215	5,346
		Government	-	3,604	(3)	-	2	3,606	237	(4)	32	(3)	-	9,056	9,325
		Asset-backed	-	-		-	1	1	-		34	(3)	-	72	106
	Cash		-	-		-	138	138	54		2	(5)	-	102	158
Total at fair value			-	8,864		-	3,909	12,773	402		199		-	20,837	21,438
	Insurance contracts
		at contract value						9							23
Total plan assets								12,782							21,461

(1)   Per ASU 2015-07, certain instruments that are measured at fair value using the Net Asset Value (NAV) per share practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total value of plan assets.

(2)   For non-U.S. equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges.

(3)   For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.

(4)   For government debt securities that are traded on active exchanges, fair value is based on observable quoted prices.

(5)   For cash balances that are subject to withdrawal penalties or other adjustments, the fair value is treated as a Level 2 input.

92

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

			Other Postretirement
			Fair Value Measurement
			at December 31, 2017, Using:
								Net
								Asset
				Level 1	Level 2		Level 3	Value (1)	Total
				(millions of dollars)
Asset category:
	Equity securities
		U.S.		-	-		-	73	73
		Non-U.S.		-	-		-	55	55
	Private equity			-	-		-	-	-
	Debt securities
		Corporate		-	99	(2)	-	-	99
		Government		-	197	(2)	-	-	197
		Asset-backed		-	1	(2)	-	-	1
	Cash			-	-		-	2	2
Total at fair value				-	297		-	130	427

(1)  Per ASU 2015-07, certain instruments that are measured at fair value using the Net Asset Value (NAV) per share practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total value of plan assets.

(2)  For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.

93

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The 2016 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
			Fair Value Measurement						Fair Value Measurement
			at December 31, 2016, Using:						at December 31, 2016, Using:
							Net							Net
							Asset							Asset
			Level 1	Level 2		Level 3	Value (1)	Total	Level 1		Level 2		Level 3	Value (1)	Total
			(millions of dollars)
Asset category:
	Equity securities
		U.S.	-	-		-	2,347	2,347	-		-		-	3,343	3,343
		Non-U.S.	-	-		-	2,126	2,126	142	(2)	2	(3)	-	3,632	3,776
	Private equity		-	-		-	553	553	-		-		-	539	539
	Debt securities
		Corporate	-	4,978	(4)	-	1	4,979	-		123	(4)	-	4,075	4,198
		Government	-	2,635	(4)	-	1	2,636	167	(5)	32	(4)	-	6,753	6,952
		Asset-backed	-	3	(4)	-	1	4	-		35	(4)	-	72	107
	Cash		-	-		-	137	137	23		9	(6)	-	73	105
Total at fair value			-	7,616		-	5,166	12,782	332		201		-	18,487	19,020
	Insurance contracts
		at contract value						11							23
Total plan assets								12,793							19,043

(1)   Per ASU 2015-07, certain instruments that are measured at fair value using the Net Asset Value (NAV) per share practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total value of plan assets.

(2)   For non-U.S. equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges.

(3)   For U.S. and non-U.S. equity securities held in the form of fund units that are redeemable at the measurement date, the published unit value is treated as a Level 2 input. The fair value of the securities owned by the funds is based on observable quoted prices on active exchanges, which are Level 1 inputs.

(4)   For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.

(5)   For government debt securities that are traded on active exchanges, fair value is based on observable quoted prices.

(6)   For cash balances that are subject to withdrawal penalties or other adjustments, the fair value is treated as a Level 2 input.

94

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

			Other Postretirement
			Fair Value Measurement
			at December 31, 2016, Using:
								Net
								Asset
				Level 1	Level 2		Level 3	Value  (1)	Total
			(millions of dollars)
Asset category:
	Equity securities
		U.S.		-	-		-	98	98
		Non-U.S.		-	-		-	71	71
	Private equity			-	-		-	-	-
	Debt securities
		Corporate		-	82	(2)	-	-	82
		Government		-	159	(2)	-	-	159
		Asset-backed		-	1	(2)	-	-	1
	Cash			-	-		-	-	-
Total at fair value				-	242		-	169	411

(1)   Per ASU 2015-07, certain instruments that are measured at fair value using the Net Asset Value (NAV) per share practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total value of plan assets.

(2)   For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.

95

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

A summary of pension plans with an accumulated benefit obligation in excess of plan assets is shown in the table below:

		Pension Benefits
		U.S.			Non-U.S.
			2017	2016		2017	2016
		(millions of dollars)
For funded  pension plans with an accumulated benefit obligation
	in excess of plan assets:
	Projected benefit obligation		16,739	17,099		3,384	837
	Accumulated benefit obligation		14,022	14,390		3,264	612
	Fair value of plan assets		12,782	12,793		3,219	564
For unfunded  pension plans:
	Projected benefit obligation		2,571	2,861		6,915	6,365
	Accumulated benefit obligation		1,535	1,855		6,208	5,687

					Other
			Pension Benefits		Postretirement
			U.S.	Non-U.S.	Benefits
		(millions of dollars)
Estimated 2018 amortization from accumulated other comprehensive income:
	Net actuarial loss/(gain) (1)		539	412		112
	Prior service cost (2)		5	47		(40)

(1)   The Corporation amortizes the net balance of actuarial losses/(gains) as a component of net periodic benefit cost over the average remaining service period of active plan participants.

(2)   The Corporation amortizes prior service cost on a straight-line basis as permitted under authoritative guidance for defined benefit pension and other postretirement benefit plans.

		Pension Benefits		Other Postretirement Benefits
					Medicare
		U.S.	Non-U.S.	Gross	Subsidy Receipt
		(millions of dollars)
Contributions expected in 2018		490	720	-		-
Benefit payments expected in:
	2018	1,364	1,183	459		25
	2019	1,279	1,163	465		26
	2020	1,267	1,197	469		28
	2021	1,268	1,203	470		29
	2022	1,285	1,220	468		30
	2023 - 2027	6,355	6,162	2,329		174

18. Disclosures about Segments and Related Information

The Upstream, Downstream and Chemical functions best define the operating segments of the business that are reported separately. 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 Downstream segment is organized and operates to manufacture and sell petroleum products. The Chemical segment is organized and operates to manufacture and sell petrochemicals. These segments are broadly understood across the petroleum and petrochemical industries.

These functions have been defined as the operating segments of the Corporation because they are the segments (1) that engage in business activities from which revenues are earned and expenses are incurred; (2) whose operating results are regularly reviewed by the Corporation’s chief operating decision maker to make decisions about resources to be allocated to the segment and to assess its performance; and (3) for which discrete financial information is available.

Earnings after income tax include transfers at estimated market prices.

96

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

In corporate and financing activities, interest revenue relates to interest earned on cash deposits and marketable securities. Interest expense includes non-debt-related interest expense of $136 million in 2017, $63 million in 2016 and $100 million in 2015.

													Corporate
	Upstream				Downstream				Chemical					and	Corporate
	U.S.		Non-U.S.		U.S.		Non-U.S.		U.S.		Non-U.S.		Financing			Total
		(millions of dollars)
As of December 31, 2017
Earnings after income tax		6,622		6,733		1,948		3,649		2,190		2,328		(3,760)		19,710
Earnings of equity companies included above		216		3,618		118		490		90		1,217		(369)		5,380
Sales and other operating revenue		9,349		14,508		61,695		122,881		11,035		17,659		35		237,162
Intersegment revenue		5,729		22,935		14,857		22,263		7,270		5,550		208		-
Depreciation and depletion expense		6,963		9,741		658		883		299		504		845		19,893
Interest revenue		-		-		-		-		-		-		36		36
Interest expense		87		29		1		6		-		-		478		601
Income tax expense (benefit)		(8,552)		5,463		(61)		934		362		664		16		(1,174)
Effect of U.S. tax reform - noncash		(7,602)		480		(618)		-		(335)		-		2,133		(5,942)
Additions to property, plant and equipment		9,761		8,617		769		1,551		1,330		2,019		854		24,901
Investments in equity companies		4,680		14,494		276		1,462		341		3,387		(286)		24,354
Total assets		89,048		155,822		18,172		34,294		13,363		21,133		16,859		348,691
As of December 31, 2016
Earnings after income tax		(4,151)		4,347		1,094		3,107		1,876		2,739		(1,172)		7,840
Earnings of equity companies included above		53		3,359		58		404		111		1,188		(367)		4,806
Sales and other operating revenue(1)		7,552		12,278		52,630		102,756		9,944		15,447		21		200,628
Intersegment revenue		3,827		18,099		11,796		18,775		6,404		4,211		236		-
Depreciation and depletion expense		9,626		9,550		628		889		275		477		863		22,308
Interest revenue		-		-		-		-		-		-		30		30
Interest expense		17		29		1		8		-		-		398		453
Income tax expense (benefit)		(2,600)		1,818		396		951		693		609		(2,273)		(406)
Additions to property, plant and equipment		3,144		7,878		791		1,525		1,463		482		817		16,100
Investments in equity companies		4,917		11,364		111		1,255		158		3,247		(242)		20,810
Total assets		86,146		153,183		16,201		29,208		11,600		18,453		15,523		330,314
As of December 31, 2015
Earnings after income tax		(1,079)		8,180		1,901		4,656		2,386		2,032		(1,926)		16,150
Earnings of equity companies included above		226		5,831		170		444		144		1,235		(406)		7,644
Sales and other operating revenue(1)		8,241		15,446		69,706		119,050		10,879		16,524		8		239,854
Intersegment revenue		4,344		20,839		12,440		22,166		7,442		5,168		274		-
Depreciation and depletion expense		5,301		9,227		664		1,003		375		654		824		18,048
Interest revenue		-		-		-		-		-		-		46		46
Interest expense		26		27		8		4		-		1		245		311
Income tax expense (benefit)		(879)		4,703		866		1,325		646		633		(1,879)		5,415
Additions to property, plant and equipment		6,915		14,561		916		1,477		1,865		629		1,112		27,475
Investments in equity companies		5,160		10,980		95		1,179		125		3,025		(227)		20,337
Total assets		93,648		155,316		16,498		29,808		10,174		18,236		13,078		336,758

(1)  Sales and other operating revenue excludes previously reported sales-based taxes of $17,980 million for 2016 and $19,634 million for 2015. See Note 2: Accounting Changes.

97

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Geographic
Sales and other operating revenue(1)		2017	2016	2015
		(millions of dollars)
United States		82,079	70,126	88,826
Non-U.S.		155,083	130,502	151,028
	Total	237,162	200,628	239,854
Significant non-U.S. revenue sources include:
	Canada	20,116	17,682	19,076
	United Kingdom	16,611	15,452	20,605
	Belgium	13,633	10,834	12,481
	Singapore	11,589	9,919	10,632
	Italy	11,476	9,715	11,220
	France	11,235	9,487	10,631
	Germany	8,484	7,899	8,447

(1)  Sales and other operating revenue excludes previously reported sales-based taxes of $17,980 million for 2016 and $19,634 million for 2015. See Note 2: Accounting Changes.

Long-lived assets		2017	2016	2015
		(millions of dollars)
United States		105,101	101,194	107,039
Non-U.S.		147,529	143,030	144,566
	Total	252,630	244,224	251,605
Significant non-U.S. long-lived assets include:
	Canada	41,138	40,144	39,775
	Australia	16,908	16,510	15,894
	Singapore	11,292	9,769	9,681
	Kazakhstan	10,121	10,325	9,705
	Nigeria	9,734	11,314	12,222
	Papua New Guinea	8,463	5,719	5,985
	Angola	7,689	8,413	8,777
	Russia	5,702	4,828	4,744

98

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

19. Income and Other Taxes

						2017				2016				2015
				U.S.	Non-U.S.		Total	U.S.	Non-U.S.		Total	U.S.	Non-U.S.		Total
								(millions of dollars)
Income tax expense
	Federal and non-U.S.
		Current		577		6,633	7,210	(214)		4,056	3,842	-		7,126	7,126
		Deferred - net		(9,075)		754	(8,321)	(2,801)		(1,422)	(4,223)	(1,166)		(571)	(1,737)
	U.S. tax on non-U.S. operations			17		-	17	41		-	41	38		-	38
			Total federal and non-U.S.	(8,481)		7,387	(1,094)	(2,974)		2,634	(340)	(1,128)		6,555	5,427
	State			(80)		-	(80)	(66)		-	(66)	(12)		-	(12)
			Total income tax expense	(8,561)		7,387	(1,174)	(3,040)		2,634	(406)	(1,140)		6,555	5,415
All other taxes and duties
	Other taxes and duties			3,330		26,774	30,104	3,209		25,811	29,020	3,206		27,103	30,309
	Included in production and
		manufacturing expenses		1,107		747	1,854	1,052		808	1,860	1,157		828	1,985
	Included in SG&A expenses			147		354	501	133		362	495	150		390	540
		Total other taxes and duties		4,584		27,875	32,459	4,394		26,981	31,375	4,513		28,321	32,834
			Total	(3,977)		35,262	31,285	1,354		29,615	30,969	3,373		34,876	38,249

Sales-based taxes were previously reported gross on the income statement and included in total taxes in the above table. See Note 2: Accounting Changes.

The above provisions for deferred income taxes include a net credit of $5,920 million in 2017, reflecting a $5,942 million credit related to U.S. tax reform and $22 million of other changes in tax laws and rates outside of the United States. Deferred income tax expense also includes net charges of $180 million in 2016 and $177 million in 2015 for the effect of changes in tax laws and rates.

Following the December 22, 2017, enactment of the U.S. Tax Cuts and Jobs Act, in accordance with Accounting Standard Codification Topic 740 (Income Taxes) and following guidance outlined in the SEC Staff Accounting Bulletin No. 118, the Corporation has included reasonable estimates of the income tax effects of the changes in tax law and tax rate. These include amounts for the remeasurement of the deferred income tax balance from the reduction in the corporate tax rate from 35 to 21 percent and the mandatory deemed repatriation of undistributed foreign earnings and profits. The Corporation has paid taxes on earnings outside the United States at tax rates on average above the historical U.S. rate of 35 percent. As a result, the deemed repatriation tax does not create a significant tax impact for ExxonMobil. The impact of tax law changes on the Corporation’s financial statements could differ from its estimates due to further analysis of the new law, regulatory guidance, technical corrections legislation, or guidance under U.S. GAAP. If significant changes occur, the Corporation will provide updated information in connection with future regulatory filings.

99

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The reconciliation between income tax expense and a theoretical U.S. tax computed by applying a rate of 35 percent for 2017, 2016 and 2015 is as follows:

			2017	2016	2015
			(millions of dollars)
Income before income taxes
	United States		(754)	(5,832)	147
	Non-U.S.		19,428	13,801	21,819
		Total	18,674	7,969	21,966
Theoretical tax			6,536	2,789	7,688
Effect of equity method of accounting			(1,883)	(1,682)	(2,675)
Non-U.S. taxes in excess of/(less than) theoretical U.S. tax (1)			1,848	(582)	1,415
Effect of U.S. tax reform			(5,942)	-	-
Other (2)			(1,733)	(931)	(1,013)
		Total income tax expense	(1,174)	(406)	5,415
Effective tax rate calculation
Income taxes			(1,174)	(406)	5,415
ExxonMobil share of equity company income taxes			2,228	1,692	3,011
		Total income taxes	1,054	1,286	8,426
Net income including noncontrolling interests			19,848	8,375	16,551
		Total income before taxes	20,902	9,661	24,977
Effective income tax rate			5%	13%	34%

(1)  2016 includes a $227 million expense from an adjustment to deferred taxes and a $548 million benefit from an adjustment to a tax position in prior years.

(2)  2017 includes an exploration tax benefit of $708 million. 2016 includes an exploration tax benefit of $198 million and benefits from an adjustment to a prior year tax position of $176 million.

100

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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. Balances at December 31, 2017, reflect the deferred income tax effects from the enactment of the U.S. Tax Cuts and Jobs Act of 2017. The Corporation has elected to account for the tax on global intangible low-taxed income (GILTI) as a tax expense in the period in which it is incurred.

Deferred tax liabilities/(assets) are comprised of the following at December 31:

Tax effects of temporary differences for:		2017	2016
		(millions of dollars)
Property, plant and equipment		36,559	46,744
Other liabilities		5,625	4,262
	Total deferred tax liabilities	42,184	51,006
Pension and other postretirement benefits		(4,338)	(6,053)
Asset retirement obligations		(4,237)	(5,454)
Tax loss carryforwards		(6,767)	(5,472)
Other assets		(5,832)	(5,615)
	Total deferred tax assets	(21,174)	(22,594)
Asset valuation allowances		2,565	1,509
	Net deferred tax liabilities	23,575	29,921

In 2017, asset valuation allowances of $2,565 million increased by $1,056 million and included net provisions of $502 million, $402 million recorded in the acquisition of InterOil Corporation, and effects of foreign currency translation of $152 million.

Balance sheet classification		2017	2016
		(millions of dollars)
Other assets, including intangibles, net		(3,318)	(4,120)
Deferred income tax liabilities		26,893	34,041
	Net deferred tax liabilities	23,575	29,921

The Corporation’s earnings from subsidiary companies outside the United States were subject to the deemed repatriation required by the U.S. Tax Cuts and Jobs Act of 2017. Those amounts continue to be indefinitely reinvested and are retained to fund prior and future capital project expenditures. Deferred income taxes have not been recorded for certain additional future tax obligations, such as foreign withholding tax and state tax, as these earnings are expected to be indefinitely reinvested for the foreseeable future. As of December 31, 2017, it is not practicable to estimate the unrecognized deferred income tax liability.

101

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Unrecognized Tax Benefits. The Corporation is subject to income taxation in many jurisdictions around the world. 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		2017	2016	2015
		(millions of dollars)
Balance at January 1		9,468	9,396	8,986
	Additions based on current year's tax positions	522	655	903
	Additions for prior years' tax positions	523	534	496
	Reductions for prior years' tax positions	(865)	(1,019)	(190)
	Reductions due to lapse of the statute of limitations	(113)	(7)	(4)
	Settlements with tax authorities	(782)	(70)	(725)
	Foreign exchange effects/other	30	(21)	(70)
Balance at December 31		8,783	9,468	9,396

The gross unrecognized tax benefit balances shown above 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 2017, 2016 and 2015 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 tax positions since such timing is not entirely within the control of the Corporation. In the United States, the Corporation has various ongoing U.S. federal income tax positions at issue with the Internal Revenue Service (IRS) for tax years beginning in 2006. The IRS has asserted penalties associated with several of those positions. The Corporation has not recognized the penalties as an expense because the Corporation does not expect the penalties to be sustained under applicable law. The Corporation has filed a refund suit for tax years 2006-2009 in a U.S. federal district court with respect to the positions at issue for those years. Unfavorable resolution of all positions at issue with the IRS would not have a materially adverse effect on the Corporation’s net income or liquidity.

It is reasonably possible that the total amount of unrecognized tax benefits could increase or decrease by 10 percent in the next 12 months with no material impact on the Corporation's net income.

The following table summarizes the tax years that remain subject to examination by major tax jurisdiction:

Country of Operation	Open Tax Years
Abu Dhabi	2014 - 2017
Angola	2016 - 2017
Australia	2008 - 2017
Belgium	2015 - 2017
Canada	1998 - 2017
Equatorial Guinea	2007 - 2017
Indonesia	2007 - 2017
Iraq	2012 - 2017
Malaysia	2009 - 2017
Nigeria	2006 - 2017
Norway	2007 - 2017
Papua New Guinea	2008 - 2017
Russia	2015 - 2017
United Kingdom	2015 - 2017
United States	2006 - 2017

The Corporation classifies interest on income tax-related balances as interest expense or interest income and classifies tax-related penalties as operating expense.

The Corporation incurred $36 million, $4 million and $39 million in interest expense on income tax reserves in 2017, 2016 and 2015, respectively. The related interest payable balances were $168 million and $191 million at December 31, 2017, and 2016, respectively.

102

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

20. Acquisitions

InterOil Corporation

On February 22, 2017, the Corporation completed the acquisition of InterOil Corporation (IOC) for $2.7 billion. The IOC acquisition was mostly unproved properties in Papua New Guinea. Consideration included 28 million shares of Exxon Mobil Corporation common stock having a value on the acquisition date of $2.2 billion, a Contingent Resource Payment (CRP) with a fair value of $0.3 billion and cash of $0.2 billion. The CRP provided IOC shareholders $7.07 per share in cash for each incremental independently certified Trillion Cubic Feet Equivalent (TCFE) of resources above 6.2 TCFE, up to 11.0 TCFE. IOC’s assets include a contingent receivable related to the same resource base for volumes in excess of 3.5 TCFE at amounts ranging from $0.24 - $0.40 per thousand cubic feet equivalent. The fair value of the contingent receivable was $1.1 billion at the acquisition date. Fair values of contingent amounts were based on assumptions about the outcome of the resource certification, future business plans and appropriate discount rates.

On September 6, 2017, the resource certification was finalized triggering both payment of the CRP to former IOC shareholders and receipt of the current portion of the contingent receivable. The earnings impact from settlement of the CRP and the related contingent receivable was not material.

Permian Basin Properties

On February 28, 2017, the Corporation completed the acquisition for $6.2 billion of a number of companies from the Bass family in Fort Worth, Texas, that indirectly own mostly unproved oil and gas properties in the Permian Basin. Consideration included 68 million shares of Exxon Mobil Corporation common stock having a value on the acquisition date of $5.5 billion, together with additional contingent cash payments tied to future drilling and completion activities (up to a maximum of $1.02 billion). Fair value of the contingent payment was $0.7 billion as of the acquisition date and is expected to be paid beginning in 2020 and ending no later than 2032 commensurate with development of the resource. Fair value of the contingent payment was based on assumptions including drilling and completion activities, appropriate discount rates and tax rates.

The fair value of the contingent payment is adjusted each quarter. The earnings impact from these adjustments was not material.

Below is a summary of the net assets acquired for each acquisition.

	IOC	Permian
	(billions of dollars)
Current assets	0.6	-
Property, plant and equipment	2.9	6.3
Other	0.6	-
Total assets	4.1	6.3
Current liabilities	0.5	-
Long-term liabilities	0.9	0.1
Total liabilities	1.4	0.1
Net assets acquired	2.7	6.2

103

SUPPLEMENTALINFORMATIONONOILANDGASEXPLORATIONANDPRODUCTIONACTIVITIES(unaudited)

The results of operations for producing activities shown below do not include earnings from other activities that ExxonMobil includes in the Upstream function, such as oil and gas transportation operations, LNG liquefaction and transportation operations, coal and power operations, technical service agreements, other nonoperating activities and adjustments for noncontrolling interests. These excluded amounts for both consolidated and equity companies totaled $1,402 million in 2017, $719 million in 2016, and $831 million in 2015. Oil sands mining operations are included in the results of operations in accordance with Securities and Exchange Commission and Financial Accounting Standards Board rules.

				Canada/
			United		Other				Australia/
Results of Operations			States		Americas	Europe	Africa	Asia	Oceania	Total
			(millions of dollars)
Consolidated Subsidiaries
2017 - Revenue
		Sales to third parties	5,223		1,911	3,652	993	2,239	2,244	16,262
		Transfers	3,852		3,462	1,631	7,771	6,035	689	23,440
			9,075		5,373	5,283	8,764	8,274	2,933	39,702
	Production costs excluding taxes		3,730		3,833	1,576	2,064	1,618	626	13,447
	Exploration expenses		162		647	94	311	494	82	1,790
	Depreciation and depletion		6,689		2,005	1,055	2,957	1,782	913	15,401
	Taxes other than income		684		97	146	559	811	311	2,608
	Related income tax		(8,066)		(180)	1,717	1,911	2,148	316	(2,154)
	Results of producing activities for consolidated
		subsidiaries	5,876		(1,029)	695	962	1,421	685	8,610
Equity Companies
2017 - Revenue
		Sales to third parties	585		-	1,636	-	8,926	-	11,147
		Transfers	443		-	10	-	638	-	1,091
			1,028		-	1,646	-	9,564	-	12,238
	Production costs excluding taxes		523		-	418	-	336	-	1,277
	Exploration expenses		1		-	13	-	878	-	892
	Depreciation and depletion		320		-	166	-	477	-	963
	Taxes other than income		33		-	679	-	2,997	-	3,709
	Related income tax		-		-	130	-	1,924	-	2,054
	Results of producing activities for equity companies		151		-	240	-	2,952	-	3,343
Total results of operations			6,027		(1,029)	935	962	4,373	685	11,953

104

				Canada/
			United	Other				Australia/
Results of Operations			States	Americas	Europe	Africa	Asia		Oceania	Total
			(millions of dollars)
Consolidated Subsidiaries
2016 - Revenue
		Sales to third parties	4,424	1,511	2,921	705	1,826		1,273	12,660
		Transfers	2,323	2,652	1,568	6,498	4,638		578	18,257
			6,747	4,163	4,489	7,203	6,464		1,851	30,917
	Production costs excluding taxes		3,590	3,651	1,794	2,216	1,331		531	13,113
	Exploration expenses		220	572	94	292	205		84	1,467
	Depreciation and depletion		9,334	1,601	1,678	3,573	1,613		532	18,331
	Taxes other than income		491	165	139	762	621		209	2,387
	Related income tax		(2,543)	(688)	546	(149)	1,767		167	(900)
	Results of producing activities for consolidated
		subsidiaries	(4,345)	(1,138)	238	509	927		328	(3,481)
Equity Companies
2016 - Revenue
		Sales to third parties	506	-	1,677	-	7,208		-	9,391
		Transfers	344	-	9	-	418		-	771
			850	-	1,686	-	7,626		-	10,162
	Production costs excluding taxes		527	-	529	-	504		-	1,560
	Exploration expenses		-	-	36	-	21		-	57
	Depreciation and depletion		301	-	143	-	437		-	881
	Taxes other than income		31	-	661	-	2,456		-	3,148
	Related income tax		-	-	86	-	1,472		-	1,558
	Results of producing activities for equity companies		(9)	-	231	-	2,736		-	2,958
Total results of operations			(4,354)	(1,138)	469	509	3,663		328	(523)
Consolidated Subsidiaries
2015 - Revenue
		Sales to third parties	4,830	1,756	3,933	1,275	2,651		1,408	15,853
		Transfers	2,557	2,858	2,024	8,135	4,490		608	20,672
			7,387	4,614	5,957	9,410	7,141		2,016	36,525
	Production costs excluding taxes		4,252	3,690	2,232	1,993	1,562		527	14,256
	Exploration expenses		182	473	187	319	254		108	1,523
	Depreciation and depletion		5,054	1,315	1,641	3,874	1,569		392	13,845
	Taxes other than income		630	111	200	734	706		171	2,552
	Related income tax		(976)	(79)	807	1,556	2,117		238	3,663
	Results of producing activities for consolidated
		subsidiaries	(1,755)	(896)	890	934	933		580	686
Equity Companies
2015 - Revenue
		Sales to third parties	608	-	2,723	-	11,174		-	14,505
		Transfers	459	-	31	-	379		-	869
			1,067	-	2,754	-	11,553		-	15,374
	Production costs excluding taxes		554	-	565	-	422		-	1,541
	Exploration expenses		12	-	21	-	18		-	51
	Depreciation and depletion		271	-	146	-	457		-	874
	Taxes other than income		47	-	1,258	-	3,197		-	4,502
	Related income tax		-	-	263	-	2,559		-	2,822
	Results of producing activities for equity companies		183	-	501	-	4,900		-	5,584
Total results of operations			(1,572)	(896)	1,391	934	5,833		580	6,270

105

Oil and Gas Exploration and Production Costs

The amounts shown for net capitalized costs of consolidated subsidiaries are $15,292 million less at year-end 2017 and $15,239 million less at year-end 2016 than the amounts reported as investments in property, plant and equipment for the Upstream in Note 9. This is due to the exclusion from capitalized costs of certain transportation and research assets and assets relating to LNG operations. Assets related to oil sands and oil shale mining operations are included in the capitalized costs in accordance with Financial Accounting Standards Board rules.

					Canada/
				United	Other				Australia/
Capitalized Costs				States	Americas	Europe	Africa	Asia		Oceania	Total
				(millions of dollars)
Consolidated Subsidiaries
As of December 31, 2017
	Property (acreage) costs		- Proved	17,380	2,560	139	982	2,624		778	24,463
			- Unproved	27,051	5,238	62	196	179		2,701	35,427
		Total property costs		44,431	7,798	201	1,178	2,803		3,479	59,890
	Producing assets			94,253	48,951	30,908	52,137	37,808		14,564	278,621
	Incomplete construction			2,016	1,484	1,173	4,294	5,499		1,440	15,906
		Total capitalized costs		140,700	58,233	32,282	57,609	46,110		19,483	354,417
	Accumulated depreciation and depletion			61,041	18,780	27,040	37,924	18,354		6,279	169,418
	Net capitalized costs for consolidated subsidiaries			79,659	39,453	5,242	19,685	27,756		13,204	184,999
Equity Companies
As of December 31, 2017
	Property (acreage) costs		- Proved	78	-	4	309	-		-	391
			- Unproved	11	-	-	3,111	59		-	3,181
		Total property costs		89	-	4	3,420	59		-	3,572
	Producing assets			6,410	-	5,678	-	9,824		-	21,912
	Incomplete construction			98	-	45	516	4,611		-	5,270
		Total capitalized costs		6,597	-	5,727	3,936	14,494		-	30,754
	Accumulated depreciation and depletion			2,722	-	4,625	-	6,519		-	13,866
	Net capitalized costs for equity companies			3,875	-	1,102	3,936	7,975		-	16,888
Consolidated Subsidiaries
As of December 31, 2016
	Property (acreage) costs		- Proved	16,075	2,339	134	929	1,739		736	21,952
			- Unproved	22,747	4,030	25	291	269		115	27,477
		Total property costs		38,822	6,369	159	1,220	2,008		851	49,429
	Producing assets			91,651	40,291	33,811	51,307	34,690		11,730	263,480
	Incomplete construction			2,099	6,154	1,403	4,495	8,377		2,827	25,355
		Total capitalized costs		132,572	52,814	35,373	57,022	45,075		15,408	338,264
	Accumulated depreciation and depletion			55,924	15,740	28,291	35,085	17,475		5,084	157,599
	Net capitalized costs for consolidated subsidiaries			76,648	37,074	7,082	21,937	27,600		10,324	180,665
Equity Companies
As of December 31, 2016
	Property (acreage) costs		- Proved	77	-	3	-	-		-	80
			- Unproved	12	-	-	-	59		-	71
		Total property costs		89	-	3	-	59		-	151
	Producing assets			6,326	-	5,043	-	8,646		-	20,015
	Incomplete construction			109	-	40	-	4,791		-	4,940
		Total capitalized costs		6,524	-	5,086	-	13,496		-	25,106
	Accumulated depreciation and depletion			2,417	-	3,987	-	6,013		-	12,417
	Net capitalized costs for equity companies			4,107	-	1,099	-	7,483		-	12,689

106

Oil and Gas Exploration and Production Costs (continued)

The amounts reported as costs incurred include both capitalized costs and costs charged to expense during the year. Costs incurred also include new asset retirement obligations established in the current year, as well as increases or decreases to the asset retirement obligation resulting from changes in cost estimates or abandonment date. Total consolidated costs incurred in 2017 were $19,644 million, up $8,269 million from 2016, due primarily to acquisitions of unproved properties, partially offset by lower development costs including lower asset retirement obligation cost estimates mainly in the North Sea. In 2016 costs were $11,375 million, down $10,512 million from 2015, due primarily to lower development costs. Total equity company costs incurred in 2017 were $6,008 million, up $4,602 million from 2016, due primarily to acquisition of unproved properties.

						Canada/
Costs Incurred in Property Acquisitions,					United	Other				Australia/
Exploration and Development Activities					States	Americas	Europe	Africa	Asia		Oceania	Total
				(millions of dollars)
During 2017
	Consolidated Subsidiaries
		Property acquisition costs	- Proved		88	5	-	50	583		-	726
			- Unproved		6,167	1,004	35	70	-		2,601	9,877
		Exploration costs			190	702	109	373	224		509	2,107
		Development costs			3,752	877	(39)	628	1,450		266	6,934
		Total costs incurred for consolidated subsidiaries			10,197	2,588	105	1,121	2,257		3,376	19,644
	Equity Companies
		Property acquisition costs	- Proved		-	-	-	309	-		-	309
			- Unproved		-	-	-	3,111	-		-	3,111
		Exploration costs			1	-	3	323	90		-	417
		Development costs			137	-	41	192	1,801		-	2,171
		Total costs incurred for equity companies			138	-	44	3,935	1,891		-	6,008
During 2016
	Consolidated Subsidiaries
		Property acquisition costs	- Proved		1	1	-	-	71		-	73
			- Unproved		170	27	-	-	-		-	197
		Exploration costs			145	689	156	321	187		133	1,631
		Development costs			3,054	1,396	538	1,866	2,214		406	9,474
		Total costs incurred for consolidated subsidiaries			3,370	2,113	694	2,187	2,472		539	11,375
	Equity Companies
		Property acquisition costs	- Proved		-	-	-	-	-		-	-
			- Unproved		-	-	-	-	-		-	-
		Exploration costs			1	-	36	-	32		-	69
		Development costs			106	-	88	-	1,143		-	1,337
		Total costs incurred for equity companies			107	-	124	-	1,175		-	1,406
During 2015
	Consolidated Subsidiaries
		Property acquisition costs	- Proved		6	-	-	-	31		-	37
			- Unproved		305	39	-	93	1		2	440
		Exploration costs			195	621	411	425	405		157	2,214
		Development costs			6,774	3,764	1,439	3,149	3,068		1,002	19,196
		Total costs incurred for consolidated subsidiaries			7,280	4,424	1,850	3,667	3,505		1,161	21,887
	Equity Companies
		Property acquisition costs	- Proved		-	-	-	-	-		-	-
			- Unproved		-	-	-	-	-		-	-
		Exploration costs			9	-	41	-	(19)		-	31
		Development costs			411	-	143	-	879		-	1,433
		Total costs incurred for equity companies			420	-	184	-	860		-	1,464

107

Oil and Gas Reserves

The following information describes changes during the years and balances of proved oil and gas reserves at year-end 2015, 2016, and 2017.

The definitions used are in accordance with the Securities and Exchange Commission’s Rule 4-10 (a) of Regulation S-X.

Proved oil and natural gas reserves are those quantities of oil and natural gas, which, by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible – from a given date forward, from known reservoirs, and under existing economic conditions, operating methods and government regulations – prior to the time at which contracts providing the right to operate expire, unless evidence indicates that renewal is reasonably certain. In some cases, substantial new investments in additional wells and related facilities will be required to recover these proved reserves.

In accordance with the Securities and Exchange Commission’s (SEC) rules, the Corporation’s year-end reserves volumes as well as the reserves change categories shown in the following tables are required to be calculated on the basis of average prices during the 12-month period prior to the ending date of the period covered by the report, determined as an unweighted arithmetic average of the first-day-of-the-month price for each month within such period. These reserves quantities are also used in calculating unit‑of-production depreciation rates and in calculating the standardized measure of discounted net cash flow.

Revisions can include upward or downward changes in previously estimated volumes of proved reserves for existing fields due to the evaluation or re-evaluation of (1) already available geologic, reservoir or production data, (2) new geologic, reservoir or production data or (3) changes in the average of first-of-month oil and natural gas prices and / or costs that are used in the estimation of reserves. Revisions can also result from significant changes in either development strategy or production equipment/facility capacity. Reserve volumes that were subject to a downward revision can be revised upward at some point in the future when price levels increase, costs decline, and / or operating efficiencies occur.

Proved reserves include 100 percent of each majority-owned affiliate’s participation in proved reserves and ExxonMobil’s ownership percentage of the proved reserves of equity companies, but exclude royalties and quantities due others. Natural gas reserves exclude the gaseous equivalent of liquids expected to be removed from the natural gas on leases, at field facilities and at gas processing plants. These liquids are included in net proved reserves of crude oil and natural gas liquids.

In the proved reserves tables, consolidated reserves and equity company reserves are reported separately. However, the Corporation does not view equity company reserves any differently than those from consolidated companies.

Reserves reported under production sharing and other nonconcessionary agreements are based on the economic interest as defined by the specific fiscal terms in the agreement. The production and reserves that we report for these types of arrangements typically vary inversely with oil and natural gas price changes. As oil and natural gas prices increase, the cash flow and value received by the company increase; however, the production volumes and reserves required to achieve this value will typically be lower because of the higher prices. When prices decrease, the opposite effect generally occurs. The percentage of total liquids and natural gas proved reserves (consolidated subsidiaries plus equity companies) at year-end 2017 that were associated with production sharing contract arrangements was 12 percent of liquids, 10 percent of natural gas and 11 percent on an oil-equivalent basis (natural gas converted to oil-equivalent at 6 billion cubic feet = 1 million barrels).

Net proved developed reserves are those volumes that are expected to be recovered through existing wells with existing equipment and operating methods or in which the cost of the required equipment is relatively minor compared to the cost of a new well. Net proved undeveloped reserves are those volumes that are expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for recompletion.

Crude oil and natural gas liquids and natural gas production quantities shown are the net volumes withdrawn from ExxonMobil’s oil and natural gas reserves. The natural gas quantities differ from the quantities of natural gas delivered for sale by the producing function as reported in the Operating Information due to volumes consumed or flared and inventory changes.

The changes between 2017 year-end proved reserves and 2016 year-end proved reserves primarily reflect extensions/discoveries in the United States, Guyana, and the United Arab Emirates, as well as purchases in the Permian Basin and offshore Area 4 in Mozambique, along with upward revisions to North America natural gas, liquids in the United Arab Emirates, and bitumen at Kearl and Cold Lake. Downward revisions are reflected in Europe for the Groningen gas field.

The downward revisions in 2016, as the result of very low prices during 2016, include the entire 3.5 billion barrels of bitumen at Kearl. In addition, 0.8 billion barrels of oil equivalent across the remainder of North America no longer qualified as proved reserves at year-end 2016 mainly due to the acceleration of the projected end-of-field-life.

108

Crude Oil, Natural Gas Liquids, Bitumen and Synthetic Oil Proved Reserves
									Natural Gas
		Crude Oil								Liquids (1)	Bitumen	Synthetic Oil
			Canada/								Canada/		Canada/
		United	Other			Australia/					Other		Other
		States	Americas	Europe	Africa	Asia	Oceania	Total	Worldwide		Americas		Americas	Total
		(millions of barrels)
Net proved developed and
	undeveloped reserves of
	consolidated subsidiaries
January 1, 2015		2,108	282	199	1,102	2,132	141	5,964		1,092	4,233		534	11,823
	Revisions	(150)	(10)	46	48	123	(4)	53		(95)	433		68	459
	Improved recovery	-	-	2	-	-	-	2		-	-		-	2
	Purchases	161	3	1	-	-	-	165		46	-		-	211
	Sales	(9)	-	(1)	-	(2)	-	(12)		(1)	-		-	(13)
	Extensions/discoveries	387	2	-	-	698	-	1,087		101	-		-	1,188
	Production	(119)	(17)	(63)	(187)	(126)	(12)	(524)		(65)	(106)		(21)	(716)
December 31, 2015		2,378	260	184	963	2,825	125	6,735		1,078	4,560		581	12,954
Proportional interest in proved
	reserves of equity companies
January 1, 2015		328	-	27	-	1,100	-	1,455		435	-		-	1,890
	Revisions	(52)	-	(1)	-	65	-	12		5	-		-	17
	Improved recovery	-	-	-	-	-	-	-		-	-		-	-
	Purchases	-	-	-	-	-	-	-		-	-		-	-
	Sales	-	-	-	-	-	-	-		-	-		-	-
	Extensions/discoveries	-	-	-	-	-	-	-		-	-		-	-
	Production	(22)	-	(1)	-	(88)	-	(111)		(26)	-		-	(137)
December 31, 2015		254	-	25	-	1,077	-	1,356		414	-		-	1,770
Total liquids proved reserves
	at December 31, 2015	2,632	260	209	963	3,902	125	8,091		1,492	4,560		581	14,724
Net proved developed and
	undeveloped reserves of
	consolidated subsidiaries
January 1, 2016		2,378	260	184	963	2,825	125	6,735		1,078	4,560		581	12,954
	Revisions	(307)	3	43	49	73	9	(130)		47	(3,748)		8	(3,823)
	Improved recovery	-	-	-	-	-	-	-		-	-		-	-
	Purchases	79	-	-	-	-	-	79		32	-		-	111
	Sales	(15)	(5)	(3)	-	-	-	(23)		(5)	-		-	(28)
	Extensions/discoveries	173	3	12	-	-	-	188		66	-		-	254
	Production	(127)	(20)	(63)	(168)	(140)	(13)	(531)		(64)	(111)		(25)	(731)
December 31, 2016		2,181	241	173	844	2,758	121	6,318		1,154	701		564	8,737
Proportional interest in proved
	reserves of equity companies
January 1, 2016		254	-	25	-	1,077	-	1,356		414	-		-	1,770
	Revisions	3	-	(7)	-	191	-	187		(5)	-		-	182
	Improved recovery	-	-	-	-	-	-	-		-	-		-	-
	Purchases	-	-	-	-	-	-	-		-	-		-	-
	Sales	-	-	-	-	-	-	-		-	-		-	-
	Extensions/discoveries	-	-	-	-	-	-	-		-	-		-	-
	Production	(21)	-	(1)	-	(85)	-	(107)		(25)	-		-	(132)
December 31, 2016		236	-	17	-	1,183	-	1,436		384	-		-	1,820
Total liquids proved reserves
	at December 31, 2016	2,417	241	190	844	3,941	121	7,754		1,538	701		564	10,557

(See footnote on next page)

109

Crude Oil, Natural Gas Liquids, Bitumen and Synthetic Oil Proved Reserves (continued)
									Natural Gas
		Crude Oil								Liquids (1)	Bitumen	Synthetic Oil
			Canada/								Canada/		Canada/
		United	Other			Australia/					Other		Other
		States	Americas	Europe	Africa	Asia	Oceania	Total	Worldwide		Americas		Americas	Total
		(millions of barrels)
Net proved developed and
	undeveloped reserves of
	consolidated subsidiaries
January 1, 2017		2,181	241	173	844	2,758	121	6,318		1,154	701		564	8,737
	Revisions	70	19	43	30	490	2	654		(49)	416		(70)	951
	Improved recovery	-	-	-	2	-	-	2		-	6		-	8
	Purchases	428	5	-	-	-	-	433		164	-		-	597
	Sales	(10)	-	(43)	-	-	-	(53)		(2)	-		-	(55)
	Extensions/discoveries	158	161	-	3	384	-	706		58	-		-	764
	Production	(132)	(16)	(54)	(150)	(136)	(13)	(501)		(67)	(111)		(21)	(700)
December 31, 2017		2,695	410	119	729	3,496	110	7,559		1,258	1,012		473	10,302
Proportional interest in proved
	reserves of equity companies
January 1, 2017		236	-	17	-	1,183	-	1,436		384	-		-	1,820
	Revisions	29	-	(1)	-	-	-	28		4	-		-	32
	Improved recovery	-	-	-	-	-	-	-		-	-		-	-
	Purchases	-	-	-	6	-	-	6		-	-		-	6
	Sales	-	-	-	-	-	-	-		-	-		-	-
	Extensions/discoveries	-	-	-	-	-	-	-		-	-		-	-
	Production	(20)	-	(1)	-	(86)	-	(107)		(24)	-		-	(131)
December 31, 2017		245	-	15	6	1,097	-	1,363		364	-		-	1,727
Total liquids proved reserves
	at December 31, 2017	2,940	410	134	735	4,593	110	8,922		1,622	1,012		473	12,029

(1)   Includes total proved reserves attributable to Imperial Oil Limited of 7 million barrels in 2015, 7 million barrels in 2016 and 10 million barrels in 2017, as well as proved developed reserves of 4 million barrels in 2015, 4 million barrels in 2016 and 3 million barrels in 2017, and in addition, proved undeveloped reserves of 3 million barrels in 2015, 3 million barrels in 2016 and 7 million barrels in 2017, in which there is a 30.4 percent noncontrolling interest.

110

Crude Oil, Natural Gas Liquids, Bitumen and Synthetic Oil Proved Reserves (continued)
												Synthetic
			Crude Oil and Natural Gas Liquids								Bitumen	Oil
				Canada/							Canada/	Canada/
			United	Other				Australia/			Other	Other
			States	Amer. (1)	Europe	Africa	Asia	Oceania	Total	Amer. (2)		Amer. (3)	Total
			(millions of barrels)
Proved developed reserves, as of
	December 31, 2015
		Consolidated subsidiaries	1,427	101	192	900	1,707	107	4,434		4,108	581	9,123
		Equity companies	228	-	25	-	1,151	-	1,404		-	-	1,404
Proved undeveloped reserves, as of
	December 31, 2015
		Consolidated subsidiaries	1,619	174	34	230	1,239	83	3,379		452	-	3,831
		Equity companies	39	-	-	-	327	-	366		-	-	366
Total liquids proved reserves at
	December 31, 2015		3,313	275	251	1,130	4,424	190	9,583		4,560	581	14,724
Proved developed reserves, as of
	December 31, 2016
		Consolidated subsidiaries	1,317	87	175	836	1,858	105	4,378		436	564	5,378
		Equity companies	210	-	11	-	1,114	-	1,335		-	-	1,335
Proved undeveloped reserves, as of
	December 31, 2016
		Consolidated subsidiaries	1,626	169	31	169	1,025	74	3,094		265	-	3,359
		Equity companies	36	-	6	-	443	-	485		-	-	485
Total liquids proved reserves at
	December 31, 2016		3,189	256	223	1,005	4,440	179	9,292		701	564	10,557
Proved developed reserves, as of
	December 31, 2017
		Consolidated subsidiaries	1,489	92	119	676	2,182	131	4,689		657	473	5,819
		Equity companies	208	-	14	-	1,019	-	1,241		-	-	1,241
Proved undeveloped reserves, as of
	December 31, 2017
		Consolidated subsidiaries	2,167	337	30	137	1,426	31	4,128		355	-	4,483
		Equity companies	48	-	1	6	431	-	486		-	-	486
Total liquids proved reserves at
	December 31, 2017		3,912	429	164	819	5,058	162	10,544	(4)	1,012	473	12,029

(1)   Includes total proved reserves attributable to Imperial Oil Limited of 34 million barrels in 2015, 35 million barrels in 2016 and 45 million barrels in 2017, as well as proved developed reserves of 23 million barrels in 2015, 19 million barrels in 2016 and 10 million barrels in 2017, and in addition, proved undeveloped reserves of 11 million barrels in 2015, 16 million barrels in 2016 and 35 million barrels in 2017, in which there is a 30.4 percent noncontrolling interest.

(2)   Includes total proved reserves attributable to Imperial Oil Limited of 3,515 million barrels in 2015, 701 million barrels in 2016 and 946 million barrels in 2017, as well as proved developed reserves of 3,063 million barrels in 2015, 436 million barrels in 2016 and 591 million barrels in 2017, and in addition, proved undeveloped reserves of 452 million barrels in 2015, 265 million barrels in 2016 and 355 million barrels in 2017, in which there is a 30.4 percent noncontrolling interest.

(3)   Includes total proved reserves attributable to Imperial Oil Limited of 581 million barrels in 2015, 564 million barrels in 2016 and 473 million barrels in 2017, as well as proved developed reserves of 581 million barrels in 2015, 564 million barrels in 2016 and 473 million barrels in 2017, in which there is a 30.4 percent noncontrolling interest.

(4)   See previous pages for natural gas liquids proved reserves attributable to consolidated subsidiaries and equity companies. For additional information on natural gas liquids proved reserves see Item 2. Properties in ExxonMobil’s 2017 Form 10-K.

111

Natural Gas and Oil-Equivalent Proved Reserves
		Natural Gas
			Canada/						Oil-Equivalent
		United	Other				Australia/		Total
		States	Amer. (1)	Europe	Africa	Asia	Oceania	Total	All Products (2)
		(billions of cubic feet)							(millions of oil-
									equivalent barrels)
Net proved developed and undeveloped
	reserves of consolidated subsidiaries
January 1, 2015		25,987	1,226	2,383	811	5,460	7,276	43,143	19,013
	Revisions	(6,693)	(45)	63	25	303	23	(6,324)	(595)
	Improved recovery	-	-	-	-	-	-	-	2
	Purchases	182	29	-	-	-	-	211	246
	Sales	(9)	(5)	(56)	-	(89)	-	(159)	(39)
	Extensions/discoveries	1,167	34	-	-	102	-	1,303	1,405
	Production	(1,254)	(112)	(434)	(43)	(447)	(258)	(2,548)	(1,140)
December 31, 2015		19,380	1,127	1,956	793	5,329	7,041	35,626	18,892
Proportional interest in proved reserves
	of equity companies
January 1, 2015		272	-	8,418	-	17,505	-	26,195	6,256
	Revisions	(38)	-	(83)	-	86	-	(35)	11
	Improved recovery	-	-	-	-	-	-	-	-
	Purchases	1	-	-	-	-	-	1	-
	Sales	-	-	-	-	-	-	-	-
	Extensions/discoveries	-	-	-	-	-	-	-	-
	Production	(15)	-	(432)	-	(1,130)	-	(1,577)	(400)
December 31, 2015		220	-	7,903	-	16,461	-	24,584	5,867
Total proved reserves at December 31, 2015		19,600	1,127	9,859	793	21,790	7,041	60,210	24,759
Net proved developed and undeveloped
	reserves of consolidated subsidiaries
January 1, 2016		19,380	1,127	1,956	793	5,329	7,041	35,626	18,892
	Revisions	(1,630)	(102)	126	21	(16)	658	(943)	(3,980)
	Improved recovery	-	-	-	-	-	-	-	-
	Purchases	148	-	-	-	-	-	148	135
	Sales	(45)	(12)	(2)	-	-	-	(59)	(38)
	Extensions/discoveries	1,156	34	6	-	-	-	1,196	453
	Production	(1,223)	(107)	(427)	(43)	(392)	(342)	(2,534)	(1,153)
December 31, 2016		17,786	940	1,659	771	4,921	7,357	33,434	14,309
Proportional interest in proved reserves
	of equity companies
January 1, 2016		220	-	7,903	-	16,461	-	24,584	5,867
	Revisions	4	-	114	-	(183)	-	(65)	171
	Improved recovery	-	-	-	-	-	-	-	-
	Purchases	-	-	-	-	-	-	-	-
	Sales	-	-	-	-	-	-	-	-
	Extensions/discoveries	-	-	5	-	-	-	5	1
	Production	(13)	-	(398)	-	(1,044)	-	(1,455)	(374)
December 31, 2016		211	-	7,624	-	15,234	-	23,069	5,665
Total proved reserves at December 31, 2016		17,997	940	9,283	771	20,155	7,357	56,503	19,974

(See footnotes on next page)

112

Natural Gas and Oil-Equivalent Proved Reserves (continued)
		Natural Gas
			Canada/						Oil-Equivalent
		United	Other				Australia/		Total
		States	Amer. (1)	Europe	Africa	Asia	Oceania	Total	All Products (2)
		(billions of cubic feet)							(millions of oil-
									equivalent barrels)
Net proved developed and undeveloped
	reserves of consolidated subsidiaries
January 1, 2017		17,786	940	1,659	771	4,921	7,357	33,434	14,309
	Revisions	649	206	134	(135)	(214)	33	673	1,063
	Improved recovery	-	1	-	-	-	-	1	8
	Purchases	982	56	-	-	-	-	1,038	771
	Sales	(172)	(1)	(17)	-	-	-	(190)	(87)
	Extensions/discoveries	956	269	-	-	13	-	1,238	970
	Production	(1,168)	(99)	(408)	(41)	(380)	(496)	(2,592)	(1,131)
December 31, 2017		19,033	1,372	1,368	595	4,340	6,894	33,602	15,903
Proportional interest in proved reserves
	of equity companies
January 1, 2017		211	-	7,624	-	15,234	-	23,069	5,665
	Revisions	25	-	(1,129)	-	86	-	(1,018)	(138)
	Improved recovery	-	-	-	-	-	-	-	-
	Purchases	-	-	-	914	-	-	914	158
	Sales	-	-	-	-	-	-	-	-
	Extensions/discoveries	-	-	-	-	-	-	-	-
	Production	(13)	-	(331)	-	(1,072)	-	(1,416)	(367)
December 31, 2017		223	-	6,164	914	14,248	-	21,549	5,318
Total proved reserves at December 31, 2017		19,256	1,372	7,532	1,509	18,588	6,894	55,151	21,221

(1)   Includes total proved reserves attributable to Imperial Oil Limited of 583 billion cubic feet in 2015, 495 billion cubic feet in 2016 and 641 billion cubic feet in 2017, as well as proved developed reserves of 283 billion cubic feet in 2015, 263 billion cubic feet in 2016 and 282 billion cubic feet in 2017, and in addition, proved undeveloped reserves of 300 billion cubic feet in 2015, 232 billion cubic feet in 2016 and 359 billion cubic feet in 2017, in which there is a 30.4 percent noncontrolling interest.

(2)   Natural gas is converted to oil-equivalent basis at six million cubic feet per one thousand barrels.

113

Natural Gas and Oil-Equivalent Proved Reserves (continued)
			Natural Gas
				Canada/						Oil-Equivalent
			United	Other				Australia/		Total
			States	Amer. (1)	Europe	Africa	Asia	Oceania	Total	All Products (2)
			(billions of cubic feet)							(millions of oil-
										equivalent barrels)
Proved developed reserves, as of
	December 31, 2015
		Consolidated subsidiaries	13,353	552	1,593	750	4,917	1,962	23,127	12,977
		Equity companies	156	-	6,146	-	15,233	-	21,535	4,993
Proved undeveloped reserves, as of
	December 31, 2015
		Consolidated subsidiaries	6,027	575	363	43	412	5,079	12,499	5,915
		Equity companies	64	-	1,757	-	1,228	-	3,049	874
Total proved reserves at December 31, 2015			19,600	1,127	9,859	793	21,790	7,041	60,210	24,759
Proved developed reserves, as of
	December 31, 2016
		Consolidated subsidiaries	11,927	478	1,473	728	4,532	3,071	22,209	9,079
		Equity companies	144	-	5,804	-	14,067	-	20,015	4,671
Proved undeveloped reserves, as of
	December 31, 2016
		Consolidated subsidiaries	5,859	462	186	43	389	4,286	11,225	5,230
		Equity companies	67	-	1,820	-	1,167	-	3,054	994
Total proved reserves at December 31, 2016			17,997	940	9,283	771	20,155	7,357	56,503	19,974
Proved developed reserves, as of
	December 31, 2017
		Consolidated subsidiaries	12,649	512	1,231	584	4,030	4,420	23,426	9,724
		Equity companies	154	-	4,899	-	12,898	-	17,951	4,232
Proved undeveloped reserves, as of
	December 31, 2017
		Consolidated subsidiaries	6,384	860	137	11	310	2,474	10,176	6,179
		Equity companies	69	-	1,265	914	1,350	-	3,598	1,086
Total proved reserves at December 31, 2017			19,256	1,372	7,532	1,509	18,588	6,894	55,151	21,221

(See footnotes on previous page)

114

Standardized Measure of Discounted Future Cash Flows

As required by the Financial Accounting Standards Board, the standardized measure of discounted future net cash flows is computed by applying first-day-of-the-month average prices, year-end costs and legislated tax rates and a discount factor of 10 percent to net proved reserves. The standardized measure includes costs for future dismantlement, abandonment and rehabilitation obligations. The Corporation believes the standardized measure does not provide a reliable estimate of the Corporation’s expected future cash flows to be obtained from the development and production of its oil and gas properties or of the value of its proved oil and gas reserves. The standardized measure is prepared on the basis of certain prescribed assumptions including first-day-of-the-month average prices, which represent discrete points in time and therefore may cause significant variability in cash flows from year to year as prices change.

					Canada/
Standardized Measure of Discounted			United		Other				Australia/
Future Cash Flows			States	Americas(1)		Europe	Africa	Asia	Oceania	Total
			(millions of dollars)
Consolidated Subsidiaries
	As of December 31, 2015
		Future cash inflows from sales of oil and gas	144,910		176,452	23,330	57,702	156,378	29,535	588,307
		Future production costs	82,678		115,285	8,735	17,114	50,745	8,889	283,446
		Future development costs	35,016		36,923	11,332	11,170	15,371	8,237	118,049
		Future income tax expenses	5,950		3,042	1,780	14,018	62,353	5,012	92,155
		Future net cash flows	21,266		21,202	1,483	15,400	27,909	7,397	94,657
		Effect of discounting net cash flows at 10%	13,336		13,415	(945)	5,226	17,396	3,454	51,882
		Discounted future net cash flows	7,930		7,787	2,428	10,174	10,513	3,943	42,775
Equity Companies
	As of December 31, 2015
		Future cash inflows from sales of oil and gas	13,065		-	49,061	-	143,692	-	205,818
		Future production costs	6,137		-	35,409	-	57,080	-	98,626
		Future development costs	2,903		-	2,190	-	12,796	-	17,889
		Future income tax expenses	-		-	4,027	-	24,855	-	28,882
		Future net cash flows	4,025		-	7,435	-	48,961	-	60,421
		Effect of discounting net cash flows at 10%	1,936		-	4,287	-	26,171	-	32,394
		Discounted future net cash flows	2,089		-	3,148	-	22,790	-	28,027
Total consolidated and equity interests in
	standardized measure of discounted
	future net cash flows		10,019		7,787	5,576	10,174	33,303	3,943	70,802

(1)   Includes discounted future net cash flows attributable to Imperial Oil Limited of $5,607 million in 2015, in which there is a 30.4 percent noncontrolling interest.

115

					Canada/
Standardized Measure of Discounted			United		Other				Australia/
Future Cash Flows (continued)			States	Americas(1)		Europe	Africa	Asia	Oceania	Total
			(millions of dollars)
Consolidated Subsidiaries
	As of December 31, 2016
		Future cash inflows from sales of oil and gas	118,283		50,243	15,487	40,734	118,997	28,877	372,621
		Future production costs	65,585		29,798	5,362	14,447	38,727	7,643	161,562
		Future development costs	31,744		11,735	9,235	8,833	13,088	8,177	82,812
		Future income tax expenses	2,223		1,052	178	8,025	44,641	2,316	58,435
		Future net cash flows	18,731		7,658	712	9,429	22,541	10,741	69,812
		Effect of discounting net cash flows at 10%	11,039		3,443	(1,014)	2,790	12,848	5,556	34,662
		Discounted future net cash flows	7,692		4,215	1,726	6,639	9,693	5,185	35,150
Equity Companies
	As of December 31, 2016
		Future cash inflows from sales of oil and gas	9,551		-	32,121	-	104,700	-	146,372
		Future production costs	5,289		-	21,342	-	41,563	-	68,194
		Future development costs	2,948		-	2,048	-	12,656	-	17,652
		Future income tax expenses	-		-	2,206	-	16,622	-	18,828
		Future net cash flows	1,314		-	6,525	-	33,859	-	41,698
		Effect of discounting net cash flows at 10%	393		-	4,158	-	18,946	-	23,497
		Discounted future net cash flows	921		-	2,367	-	14,913	-	18,201
Total consolidated and equity interests in
	standardized measure of discounted
	future net cash flows		8,613		4,215	4,093	6,639	24,606	5,185	53,351
Consolidated Subsidiaries
	As of December 31, 2017
		Future cash inflows from sales of oil and gas	186,126		78,870	14,794	43,223	191,254	40,814	555,081
		Future production costs	78,980		42,280	4,424	14,049	53,723	8,424	201,880
		Future development costs	39,996		18,150	7,480	8,897	15,156	7,951	97,630
		Future income tax expenses	12,879		4,527	2,790	8,818	90,614	6,017	125,645
		Future net cash flows	54,271		13,913	100	11,459	31,761	18,422	129,926
		Effect of discounting net cash flows at 10%	30,574		6,158	(1,255)	2,996	17,511	8,741	64,725
		Discounted future net cash flows	23,697		7,755	1,355	8,463	14,250	9,681	65,201
Equity Companies
	As of December 31, 2017
		Future cash inflows from sales of oil and gas	12,643		-	28,557	2,366	127,364	-	170,930
		Future production costs	5,927		-	21,120	247	48,300	-	75,594
		Future development costs	3,012		-	1,913	417	11,825	-	17,167
		Future income tax expenses	-		-	1,683	514	22,396	-	24,593
		Future net cash flows	3,704		-	3,841	1,188	44,843	-	53,576
		Effect of discounting net cash flows at 10%	1,668		-	2,116	1,045	23,744	-	28,573
		Discounted future net cash flows	2,036		-	1,725	143	21,099	-	25,003
Total consolidated and equity interests in
	standardized measure of discounted
	future net cash flows		25,733		7,755	3,080	8,606	35,349	9,681	90,204

(1)   Includes discounted future net cash flows attributable to Imperial Oil Limited of $2,322 million in 2016 and $3,344 million in 2017, in which there is a 30.4 percent noncontrolling interest.

116

Change in Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves

Consolidated and Equity Interests				2015
					Total
				Share of	Consolidated
			Consolidated	Equity Method	and Equity
			Subsidiaries	Investees	Interests
			(millions of dollars)
Discounted future net cash flows as of December 31, 2014			138,664	68,921	207,585
Value of reserves added during the year due to extensions, discoveries,
	improved recovery and net purchases less related costs		5,678	-	5,678
Changes in value of previous-year reserves due to:
	Sales and transfers of oil and gas produced during the year, net of
		production (lifting) costs	(20,694)	(9,492)	(30,186)
	Development costs incurred during the year		18,359	1,198	19,557
	Net change in prices, lifting and development costs		(203,224)	(57,478)	(260,702)
	Revisions of previous reserves estimates		6,888	(134)	6,754
	Accretion of discount		17,828	7,257	25,085
Net change in income taxes			79,276	17,755	97,031
		Total change in the standardized measure during the year	(95,889)	(40,894)	(136,783)
Discounted future net cash flows as of December 31, 2015			42,775	28,027	70,802

Consolidated and Equity Interests				2016
					Total
				Share of	Consolidated
			Consolidated	Equity Method	and Equity
			Subsidiaries	Investees	Interests
			(millions of dollars)
Discounted future net cash flows as of December 31, 2015			42,775	28,027	70,802
Value of reserves added during the year due to extensions, discoveries,
	improved recovery and net purchases less related costs		1,377	5	1,382
Changes in value of previous-year reserves due to:
	Sales and transfers of oil and gas produced during the year, net of
		production (lifting) costs	(17,110)	(5,540)	(22,650)
	Development costs incurred during the year		9,905	1,438	11,343
	Net change in prices, lifting and development costs (1)		(26,561)	(15,549)	(42,110)
	Revisions of previous reserves estimates		4,908	1,425	6,333
	Accretion of discount		7,854	3,857	11,711
Net change in income taxes			12,002	4,538	16,540
		Total change in the standardized measure during the year	(7,625)	(9,826)	(17,451)
Discounted future net cash flows as of December 31, 2016			35,150	18,201	53,351

(1)Securities and Exchange Commission (SEC) rules require the Corporation’s reserves to be calculated on the basis of average first-of-month oil and natural gas prices during the reporting year. As a result of very low prices during 2016, under the SEC definition of proved reserves, certain quantities of oil and natural gas that qualified as proved reserves in prior years did not qualify as proved reserves at year-end 2016. Future net cash flows for these quantities are excluded from the 2016 Standardized Measure of Discounted Future Cash Flows. Substantially all of this reduction in discounted future net cash flows since December 31, 2015, is reflected in the line “Net change in prices, lifting and development costs” in the table above.

117

Change in Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves

Consolidated and Equity Interests (continued)				2017
					Total
				Share of	Consolidated
			Consolidated	Equity Method	and Equity
			Subsidiaries	Investees	Interests
			(millions of dollars)
Discounted future net cash flows as of December 31, 2016			35,150	18,201	53,351
Value of reserves added during the year due to extensions, discoveries,
	improved recovery and net purchases less related costs		10,375	255	10,630
Changes in value of previous-year reserves due to:
	Sales and transfers of oil and gas produced during the year, net of
		production (lifting) costs	(24,911)	(7,358)	(32,269)
	Development costs incurred during the year		7,066	2,020	9,086
	Net change in prices, lifting and development costs		51,703	12,782	64,485
	Revisions of previous reserves estimates		6,580	1,193	7,773
	Accretion of discount		4,951	2,124	7,075
Net change in income taxes			(25,713)	(4,214)	(29,927)
		Total change in the standardized measure during the year	30,051	6,802	36,853
Discounted future net cash flows as of December 31, 2017			65,201	25,003	90,204

118

OPERATING INFORMATION (unaudited)

			2017	2016	2015	2014	2013
Production of crude oil, natural gas liquids, bitumen and synthetic oil
	Net production		(thousands of barrels daily)
		United States	514	494	476	454	431
		Canada/Other Americas	412	430	402	301	280
		Europe	182	204	204	184	190
		Africa	423	474	529	489	469
		Asia	698	707	684	624	784
		Australia/Oceania	54	56	50	59	48
	Worldwide		2,283	2,365	2,345	2,111	2,202
Natural gas production available for sale
	Net production		(millions of cubic feet daily)
		United States	2,936	3,078	3,147	3,404	3,545
		Canada/Other Americas	218	239	261	310	354
		Europe	1,948	2,173	2,286	2,816	3,251
		Africa	5	7	5	4	6
		Asia	3,794	3,743	4,139	4,099	4,329
		Australia/Oceania	1,310	887	677	512	351
	Worldwide		10,211	10,127	10,515	11,145	11,836
			(thousands of oil-equivalent barrels daily)
Oil-equivalent production(1)			3,985	4,053	4,097	3,969	4,175
Refinery throughput			(thousands of barrels daily)
		United States	1,508	1,591	1,709	1,809	1,819
		Canada	383	363	386	394	426
		Europe	1,510	1,417	1,496	1,454	1,400
		Asia Pacific	690	708	647	628	779
		Other Non-U.S.	200	190	194	191	161
	Worldwide		4,291	4,269	4,432	4,476	4,585
Petroleum product sales (2)
		United States	2,190	2,250	2,521	2,655	2,609
		Canada	499	491	488	496	464
		Europe	1,597	1,519	1,542	1,555	1,497
		Asia Pacific and other Eastern Hemisphere	1,164	1,140	1,124	1,085	1,206
		Latin America	80	82	79	84	111
	Worldwide		5,530	5,482	5,754	5,875	5,887
		Gasoline, naphthas	2,262	2,270	2,363	2,452	2,418
		Heating oils, kerosene, diesel oils	1,850	1,772	1,924	1,912	1,838
		Aviation fuels	382	399	413	423	462
		Heavy fuels	371	370	377	390	431
		Specialty petroleum products	665	671	677	698	738
	Worldwide		5,530	5,482	5,754	5,875	5,887
Chemical prime product sales (2)			(thousands of metric tons)
		United States	9,307	9,576	9,664	9,528	9,679
		Non-U.S.	16,113	15,349	15,049	14,707	14,384
	Worldwide		25,420	24,925	24,713	24,235	24,063

Operating statistics include 100 percent of operations of majority-owned subsidiaries; for other companies, crude production, gas, petroleum product and chemical prime product sales include ExxonMobil’s ownership percentage and refining throughput includes quantities processed for ExxonMobil. Net production excludes royalties and quantities due others when produced, whether payment is made in kind or cash.

(1)   Gas converted to oil-equivalent at 6 million cubic feet = 1 thousand barrels.

(2)   Petroleum product and chemical prime product sales data reported net of purchases/sales contracts with the same counterparty.

119

INDEX TO EXHIBITS

Exhibit	Description
3(i)	Restated Certificate of Incorporation, as restated November 30, 1999, and as further amended effective June 20, 2001 (incorporated by reference to Exhibit 3(i) to the Registrant’s Annual Report on Form 10-K for 2015).
3(ii)	By-Laws, as revised effective November 1, 2017 (incorporated by reference to Exhibit 3(ii) to the Registrant’s Report on Form 8-K of October 31, 2017).
10(iii)(a.1)	2003 Incentive Program, as approved by shareholders May 28, 2003.*
10(iii)(a.2)	Extended Provisions for Restricted Stock Agreements (incorporated by reference to Exhibit 10(iii)(a.2) to the Registrant’s Annual Report on Form 10-K for 2016).*
10(iii)(a.3)	Extended Provisions for Restricted Stock Unit Agreements – Settlement in Shares.*
10(iii)(b.1)	Short Term Incentive Program, as amended (incorporated by reference to Exhibit 10(iii)(b.1) to the Registrant’s Annual Report on Form 10-K for 2013).*
10(iii)(b.2)	Earnings Bonus Unit instrument.*
10(iii)(c.1)	ExxonMobil Supplemental Savings Plan (incorporated by reference to Exhibit 10(iii)(c.1) to the Registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2017).*
10(iii)(c.2)	ExxonMobil Supplemental Pension Plan (incorporated by reference to Exhibit 10(iii)(c.2) to the Registrant’s Annual Report on Form 10-K for 2014).*
10(iii)(c.3)	ExxonMobil Additional Payments Plan (incorporated by reference to Exhibit 10(iii)(c.3) to the Registrant’s Annual Report on Form 10-K for 2013).*
10(iii)(d)	ExxonMobil Executive Life Insurance and Death Benefit Plan (incorporated by reference to Exhibit 10(iii)(d) to the Registrant’s Annual Report on Form 10-K for 2016).*
10(iii)(f.1)	2004 Non-Employee Director Restricted Stock Plan (incorporated by reference to Exhibit 10(iii)(f.1) to the Registrant’s Annual Report on Form 10-K for 2013).*
10(iii)(f.2)	Standing resolution for non-employee director restricted grants dated September 26, 2007 (incorporated by reference to Exhibit 10(iii)(f.2) to the Registrant’s Annual Report on Form 10-K for 2016).*
10(iii)(f.3)	Form of restricted stock grant letter for non-employee directors (incorporated by reference to Exhibit 10(iii)(f.3) to the Registrant’s Annual Report on Form 10-K for 2014).*
10(iii)(f.4)	Standing resolution for non-employee director cash fees dated October 26, 2011 (incorporated by reference to Exhibit 10(iii)(f.4) to the Registrant’s Annual Report on Form 10-K for 2015).*
12	Computation of ratio of earnings to fixed charges.
14	Code of Ethics and Business Conduct.
18	Preferability Letter of PricewaterhouseCoopers LLP, Independent Registered Public Accounting Firm.
21	Subsidiaries of the registrant.
23	Consent of PricewaterhouseCoopers LLP, Independent Registered Public Accounting Firm.
31.1	Certification (pursuant to Securities Exchange Act Rule 13a-14(a)) by Chief Executive Officer.
31.2	Certification (pursuant to Securities Exchange Act Rule 13a-14(a)) by Principal Financial Officer.
31.3	Certification (pursuant to Securities Exchange Act Rule 13a-14(a)) by Principal Accounting Officer.
32.1	Section 1350 Certification (pursuant to Sarbanes-Oxley Section 906) by Chief Executive Officer.
32.2	Section 1350 Certification (pursuant to Sarbanes-Oxley Section 906) by Principal Financial Officer.
32.3	Section 1350 Certification (pursuant to Sarbanes-Oxley Section 906) by Principal Accounting Officer.
101	Interactive data files.
_____________________

*  Compensatory plan or arrangement required to be identified pursuant to Item 15(a)(3) of this Annual Report on Form 10-K.

The registrant has not filed with this report copies of the instruments defining the rights of holders of long-term debt of the registrant and its subsidiaries for which consolidated or unconsolidated financial statements are required to be filed. The registrant agrees to furnish a copy of any such instrument to the Securities and Exchange Commission upon request.

120

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

EXXON MOBIL CORPORATION
By:	/s/    DARREN W. WOODS
		(Darren W. Woods, Chairman of the Board)

Dated February 28, 2018

POWER OF ATTORNEY

Each person whose signature appears below constitutes and appoints Beth E. Casteel, Stephen A. Littleton, and Richard C. Vint and each of them, his or her true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any and all amendments to this Annual Report on Form 10-K, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them, or their or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities indicated and on February 28, 2018.

/s/    DARREN W. WOODS (Darren W. Woods)	Chairman of the Board (Principal Executive Officer)
/s/    SUSAN K. AVERY (Susan K. Avery)	Director
/s/    MICHAEL J. BOSKIN (Michael J. Boskin)	Director
/s/    ANGELA F. BRALY (Angela F. Braly)	Director
/s/    URSULA M. BURNS (Ursula M. Burns)	Director

121

/s/    KENNETH C. FRAZIER (Kenneth C. Frazier)	Director
/s/    STEVEN A. KANDARIAN (Steven A. Kandarian)	Director
/s/    DOUGLAS R. OBERHELMAN (Douglas R. Oberhelman)	Director
/s/    SAMUEL J. PALMISANO (Samuel J. Palmisano)	Director
/s/    STEVEN S REINEMUND (Steven S Reinemund)	Director
/s/    WILLIAM C. WELDON (William C. Weldon)	Director
/s/    ANDREW P. SWIGER (Andrew P. Swiger)	Senior Vice President (Principal Financial Officer)
/s/    DAVID S. ROSENTHAL (David S. Rosenthal)	Vice President and Controller (Principal Accounting Officer)

122

EX-10.(III) (A1)

 

EXHIBIT 10(iii)(a.1)

EXXON MOBIL CORPORATION

2003 INCENTIVE PROGRAM

(as approved by shareholders May 28, 2003)

I. Purposes

This 2003 Incentive Program is intended to help reward, retain, and motivate selected employees of the Corporation and its affiliates and to align further the interests of those employees with the interests of the Corporation's shareholders through the grant of stock-based awards.

II. Definitions

The following definitions apply:

(1)  'Administrative authority' means the Board, a committee designated by the Board, the Chairman of the Board, or the Chairman's delegates authorized to administer outstanding awards under this Program, establish requirements and procedures for the operation of the Program, and to exercise other powers assigned to the administrative authority under this Program in accordance with Section III.

(2)  'Affiliate' means a corporation, partnership, limited liability company, or other entity in which the Corporation, directly or indirectly, owns an equity interest and which the administrative authority determines to be an affiliate for purposes of this Program (including for purposes of determining whether a change of employment constitutes a termination).

(3)  'Award' means a stock option, a stock appreciation right, restricted stock, a restricted stock unit, performance stock, a performance stock unit, deferred stock, a deferred stock unit, or other award granted under this Program.

(4)  'Board' means the Board of Directors of the Corporation.

(5)  'Code' means the Internal Revenue Code, as in effect from time to time.

(6)  'Compensation Committee' means the committee of the Board so designated in accordance with Section IV.

(7)  'Corporation' means Exxon Mobil Corporation, a New Jersey corporation, or its successors.

(8)  'Deferred stock' means a share the delivery of which is subject to a specified deferral period.

(9)  'Deferred stock unit' means a stock unit the settlement of which is subject to a specified deferral period.

(10)  'Designated beneficiary' means the person designated by the grantee of an award pursuant to Section XVI to be entitled, on the death of the grantee, to any remaining rights arising out of the award.

(11)  'Detrimental activity' of a grantee means activity at any time, during or after employment with the Corporation or an affiliate, that is determined in individual cases by the administrative authority to be (a) a material violation of applicable standards, policies, or procedures of the Corporation or an affiliate; or (b) a material breach of legal or other duties owed by the grantee to the Corporation or an affiliate; or (c) a material breach of any contract between the grantee and the Corporation or an affiliate; or (d) acceptance by grantee of duties to a third party under circumstances that create a material conflict of interest, or the appearance of a material conflict of interest, with respect to the grantee's retention of outstanding awards under this Program.  Detrimental activity includes, without limitation, activity that would be a basis for termination of employment for cause under applicable law in the United States, or a comparable standard under applicable law of another jurisdiction.  With respect to material conflict of interest or the appearance of material conflict of interest, such conflict or appearance might occur when, for example and without limitation, a grantee holding an outstanding award becomes employed or otherwise engaged by an entity that regulates, deals with, or competes with the Corporation or an affiliate.

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(12)  ‘Employee’ means an employee of the Corporation or an affiliate, including a part-time employee or an employee on military, family, or other approved temporary leave.

(13)  'Exchange Act' means the Securities Exchange Act of 1934, as in effect from time to time.

(14)  'Fair market value' as of any day means (a) if the New York Stock Exchange is open for trading on that day, the average of the high and low price of the shares as reported on the consolidated tape during the New York Stock Exchange regular session; or (b) if the New York Stock Exchange is not open for trading on that day, the price determined under the preceding clause (a) for the most recent prior trading day.

(15)  'Grantee' means a recipient of an award under this Program.

(16)  ‘Granting authority” means the Board or any appropriate committee authorized to grant and amend awards under this Program and to exercise other powers assigned to the granting authority under this Program in accordance with Section V.

(17)  'Incentive Stock Option' or 'ISO' means a stock option that meets the requirements of Section 422 of the Code or any successor provision.

(18)  'Other award' means a form of award based on, payable in, or otherwise related to shares that is not covered by Sections IX, X, XI, or XII of this Program.

(19)  'Performance stock' means a share the delivery of which is subject to attainment of specified performance criteria.

(20)  'Performance stock unit' means a stock unit the delivery or settlement of which is subject to attainment of specified performance criteria.

(21)  'Program' means this 2003 Incentive Program, as amended from time to time.

(22)  'Reporting person' means a person subject to the reporting requirements of Section 16(a) of the Exchange Act with respect to the shares.

(23)  'Resign' means to terminate at the initiative of the employee before standard retirement time. Resignation includes, without limitation, early retirement at the initiative of the employee. The time or date of a resignation for purposes of this Program is not necessarily the employee's last day on the payroll. See Section XV(3).

(24)  'Restricted stock' means shares subject to restrictions on transfer and potential forfeiture for a specified restricted period.

(25)  'Restricted stock unit' means a stock unit subject to restrictions on transfer and potential forfeiture for a specified restricted period.

(26)  'Rule 16b-3' means Rule 16b-3 or any successor rule under the Exchange Act that exempts transactions under employee benefit plans, as in effect from time to time.

(27)  'Section 162(m)' means Section 162(m) of the Code and the regulations thereunder, as in effect from time to time.

(28)  'Share' means a share of common stock of the Corporation, or any security issued in exchange therefor.

(29)  'Stock unit' means a right with a value based on the value of shares.

(30)  'Shareholder-approved plan' means any of the plans constituting parts of any Incentive Programs previously approved by shareholders of the Corporation.

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(31)  'Spread' means the difference between the exercise price per share of an award and the fair market value of the underlying shares on the date the award is exercised.

(32)  'Standard retirement time' means (a) for each US-dollar payroll employee, the first day of the month immediately following the month in which the employee attains age 65; and (b) for each other employee, the comparable age in that employee's payroll country as determined by the administrative authority with reference to local law, custom, and affiliate policies regarding retirement.

(33)  'Stock appreciation right' or 'SAR' means an award giving the grantee the right to receive the spread on the shares specified in the award.

(34)  'Terminate' means cease to be an employee for any reason, whether at the initiative of the employee, the employer, or otherwise.  That reason could include, without limitation, resignation or retirement by the employee; discharge of the employee by the employer, with or without cause; death; transfer of employment to an entity that is not an affiliate; or a sale, divestiture, or other transaction as a result of which an employer ceases to be an affiliate.  A change of employment from the Corporation or one affiliate to another affiliate, or to the Corporation, is not a termination.  The time or date of termination is not necessarily the employee's last day on the payroll.  See Section XV(3).

III. Administration

The Board is the ultimate administrative authority for this Program, with the power to interpret and administer its provisions. The Board may delegate its authority to a committee which, except in the case of the Compensation Committee, need not be a committee of the Board.  Subject to the authority of the Board or an authorized committee, the Chairman and his delegates will serve as the administrative authority for purposes of establishing requirements and procedures for the operation of the Program; making final determinations and interpretations with respect to outstanding awards; and exercising other powers assigned to the administrative authority under this Program.

IV. Compensation Committee

The Board will appoint a Compensation Committee.  The Compensation Committee will consist of three or more non-employee members of the Board, each of whom satisfies such criteria of independence as the Board may establish and such additional regulatory or listing requirements as the Board may determine to be applicable or appropriate.  No award under this Program may be granted to a member of the Compensation Committee.

V. Right to Grant Awards; Reserved Powers; Eligibility

(1)  The Board is the ultimate granting authority for this Program, with the power to select eligible persons for participation and to make all decisions concerning the grant or amendment of awards.  The Board may delegate this authority in whole or in part (a) in the case of reporting persons, to the Compensation Committee; and (b) in the case of employees who are not reporting persons, to a committee of two or more persons who may, but need not, be directors of the Corporation.

(2)  The granting authority has sole discretion to select persons for awards under this Program, except that grants may be made only to persons who at the time of grant are, or within the immediately preceding 12 months have been, employees of the Corporation or of an affiliate in which the Corporation directly or indirectly holds a 50 percent or greater equity interest.  No person is entitled to an award as a matter of right, and the grant of an award under this Program does not entitle a grantee to any future or additional awards.

VI. Term

This Program will become effective when approved by the shareholders of the Corporation and will terminate when there are no longer any outstanding awards under the Program.

VII.  Available Shares

(1)  The maximum number of shares issued pursuant to awards under this Program may not exceed 220,000,000 shares.  Within this overall limitation, the following additional limitations also apply:

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(a)  No more than 20,000,000 shares may be issued under ISOs;

(b)  No more than 5,000,000shares may be granted under stock options or SARs to any one grantee in any one calendar year;

(c)  No more than 10,000,000 shares may be issued under other awards pursuant to Section XIII; and

(d) Grants of performance stock and performance stock units to certain senior executives under Section XI(2) are subject to the limitation based on annual net income specified in Section XI(2)(b).

(2)  To the extent an award under this Program is settled in cash, expires unexercised, or is forfeited or cancelled, shares subject to the award will not be considered to have been issued and will not be applied against the maximum number of shares under the preceding clause (1).

(3)  Shares surrendered to or withheld by the Corporation in payment of the exercise price or applicable taxes upon exercise or settlement of an award may also be used thereafter for additional awards.

VIII. Adjustments

Whenever a stock split, stock dividend, merger, or other relevant change in capitalization occurs, the administrative authority (which, in the case of reporting persons, must be the Compensation Committee) may adjust the terms of outstanding awards, as well as the terms of this Program relating to the number of shares that may be granted or issued, as appropriate to prevent either dilution or enlargement of the rights of grantees and potential grantees.

IX. Stock Options; SARs

(1)  Subject to the terms of this Program, stock options and SARs may be granted to selected persons upon such terms and conditions as the granting authority determines, except that:

(a)  The exercise price per share may not be less than 100 percent of fair market value on the date of grant;

(b)  Except in case of death as provided in Section XVI, a stock option or SAR may not become exercisable until at least one year after the date of grant; and

(c)  An unexercised stock option or SAR will expire at the earliest of the following times:

(i)  Ten years after it is granted;

(ii)  Any earlier date specified in the award; or

(iii)  Such earlier date as may apply under Section XV.

(2)  The granting authority may designate any stock option as an ISO.  However, the aggregate fair market value (determined as of the date a stock option is granted) of shares underlying stock options designated as ISOs that become exercisable for the first time by any grantee during any calendar year (under this Program and all other plans of the Corporation and any affiliate) may not exceed $100,000 (or such other amount as may be reflected in the limits imposed from time to time by Section 422(d) of the Code or any successor provision).  This limitation will be applied by taking stock options into account in the order in which they were granted. In addition, (a) the total number of shares granted as ISOs under this Program may not exceed the limit specified in Section VII(1)(a); and (b) no ISO may be granted after the tenth anniversary of the date on which shareholders approve this Program.  If a stock option or portion that is intended to qualify as an ISO fails to meet the foregoing requirements, the option or portion will be treated as not being an ISO but will otherwise remain a valid stock option according to its terms.

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(3)  Payment of the exercise price of a stock option may be made in cash or shares in accordance with the terms of this Program and any requirements or procedures of the administrative authority in effect at the time.  If permitted by the administrative authority, shares used as payment need not be physically delivered to the Corporation but may be deemed transferred so that only a net number of shares is physically delivered to the grantee in settlement of an option exercise.  Shares used as payment will be valued at fair market value.  For this purpose, the administrative authority may establish procedures under which fair market value is determined either on the date of exercise or as of the immediately preceding day.

(4)  SARs may be granted as freestanding awards or in tandem with stock options.  A tandem SAR may be included with a stock option at the time the option is granted or by an amendment of the option.  Exercise of a tandem SAR will be deemed a surrender of the related stock option for cancellation and vice versa.  SARs may be settled in cash, shares, or a combination thereof.

(5)  A stock option or SAR may provide that it will be deemed to be automatically exercised on the last day of its term if the award has positive value and would otherwise expire unexercised under subsections (1)(c)(i) or (1)(c)(ii) of this Section IX.

X. Restricted Stock; Restricted Stock Units

Subject to the terms of this Program, restricted stock and restricted stock units may be granted to selected persons upon such terms and conditions as the granting authority determines, including: the duration and conditions of the applicable restricted periods; whether or not, in the case of restricted stock, the grantee has the right to vote the shares or receive dividends; and, in the case of restricted stock units, the method of settlement, which may be in cash, shares, or a combination thereof.  However, except in case of death (which is covered in Section XVI), the restricted period for restricted stock and restricted stock units granted under this Section X may not be less than three years from the date the award is approved by the granting authority.

XI. Performance Stock; Performance Stock Units

(1)  Subject to the terms of this Program, performance stock and performance stock units may be granted to selected persons upon such terms and conditions as the granting authority determines, including: the applicable performance periods and performance criteria; maximum, minimum and target settlement values, if applicable; whether or not, in the case of performance stock, the grantee has the right to vote the shares or receive dividends; and, in the case of performance stock units, the method of settlement, which may be in cash, shares, or another form of award permitted under this Program, or a combination thereof.  However, the performance period for performance stock and performance stock units granted under this Section XI may not be less than 12 months.  The extent to which performance criteria have been achieved will be determined by the administrative authority (which, in the case of awards granted under Section XI(2), must be the Compensation Committee).

(2)  Performance stock or performance stock units granted to the Corporation's Chief Executive Officer, the other four most highly compensated officers, and any other key employees designated by the Compensation Committee as of the end of each taxable year of the Corporation will be subject to the following additional terms:

(a)  The award will be subject both to the shareholder-approved performance goal specified in paragraph (b) of this Section XI(2) and to the attainment of such other objective goals as shall be pre-established by the Compensation Committee based on one or more of the following performance criteria:  earnings per share, net income, cash flow, operating income, return on capital employed, and total shareholder return.

(b)  The maximum amount of awards granted under these terms to any one grantee for any one year is limited to the shareholder-approved performance goal of one-half of one percent (0.5 percent) of the Corporation's net income from operations for that year.  For this purpose, performance stock will be valued at the fair market value of shares and performance stock units will be valued at the fair market value of one share per unit on the date of grant.  The Compensation Committee may award a grantee less, but not more, than the maximum award under this Section XI(2).

XII.Deferred Stock; Deferred Stock Units

(1)  Subject to the terms of this Program, deferred stock and deferred stock units may be granted to selected persons upon such terms and conditions as the granting authority determines, including: the duration of the deferral period; the number of installments in which delivery of deferred stock or settlement of deferred stock units will be made; whether or not, in the case of deferred stock, the grantee has the right to vote the shares or receive dividends; and, in the case of deferred stock units, the method of settlement, which may be in cash, shares, or a combination thereof.  However, deferred stock and deferred stock units granted    

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under this Section XII may only be granted in lieu of salary, bonus, or incentive compensation that would otherwise be paid to the grantee in cash.  For this purpose, deferred stock will be valued at the fair market value of shares and deferred stock units will be valued at the fair market value of one share per unit on the date of grant.

(2)  Deferred stock and deferred stock units may be awarded at the election of the granting authority or, if the granting authority permits and subject to any requirements and procedures established by the administrative authority, at the election of the grantee.

XIII. Other Awards

Subject to the terms of this Program (including the 10,000,000 share limit specified in Section VII(1)(c)), other awards may be granted to selected persons upon such terms and conditions as the granting authority determines consistent with the overall purposes of this Program.

XIV. Deferred and Installment Settlement; Dividend and Interest Equivalents

(1)  The granting authority may permit or require settlement of any award under this Program to be deferred and to be made in one or more installments upon such terms and conditions as the granting authority may determine at the time the award is granted or by amendment of the award.

(2)  Any form of award may accrue dividend equivalents upon such terms and conditions as the granting authority determines.  Dividend equivalents may be paid currently in cash or may be deemed to be reinvested in additional shares (which may thereafter accrue additional dividend equivalents).  Any reinvestment will be at fair market value on the date thereof.  Reinvested dividend equivalents will be settled in cash or shares upon exercise, settlement, or payment of, or lapse of restrictions on, the underlying award, and will expire or be forfeited or cancelled upon the same conditions as the underlying award.

(3)  An award that is settled in whole or in part in cash on a deferred basis may provide for interest equivalents to be credited with respect to the cash payment upon such terms and conditions as the granting authority determines.  Interest equivalents may be paid currently or may be added to the balance of the award amount and compounded.  Compounded interest equivalents will be paid in cash upon exercise, settlement, or payment of, or lapse of restrictions on, the underlying award, and will expire or be forfeited or cancelled upon the same conditions as the underlying award.  The granting authority may delegate to the administrative authority the right to determine the rate or rates at which interest equivalents will accrue.

(4)  The crediting of dividend or interest equivalents on an outstanding award is not a new grant for purposes of the eligibility provisions of Section V(2).

XV. Termination; Detrimental Activity

(1)  If a grantee terminates before standard retirement time, other than by reason of death, all outstanding awards of the grantee under this Program (including unexercised stock options or SARs, restricted stock and restricted stock units still subject to restriction, and performance stock, performance stock units, deferred stock, deferred stock units, and other awards not yet paid or settled) will automatically expire and be forfeited as of the date of termination except to the extent the administrative authority (which, in the case of reporting persons, must be the Compensation Committee) determines otherwise.

(2)  If a grantee resigns, the administrative authority (which, in the case of reporting persons, must be the Compensation Committee) may, in furtherance of the employee-retention purpose of this Program or for other good reason, require the grantee to pay to the Corporation an amount equal to the spread on any stock option or SAR exercised by the grantee during the six-month period immediately preceding such resignation.  The provisions of this Section XV(2) are in addition to, not in lieu of, the other consequences of termination provided in this Section XV.

(3)  For purposes of this Program, the administrative authority may determine that the time or date an employee resigns or otherwise terminates is the time or date the employee gives notice of resignation, accepts employment with another employer, otherwise indicates an intent to resign, or is discharged.  The time or date of termination for this purpose is not necessarily the employee's last day on the payroll.

(4)  If the administrative authority (which, in the case of reporting persons, must be the Compensation Committee) determines that a grantee has engaged in detrimental activity, whether or not the grantee is still an employee, then the administrative authority may, effective as of the time of such determination, cancel and cause to expire all or part of the grantee's outstanding

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awards under this Program (including unexercised stock options or SARs, restricted stock and restricted stock units still subject to restriction, and performance stock, performance stock units, deferred stock, deferred stock units, and other awards not yet paid or settled).

(5)  If the administrative authority is advised or has reason to believe that a grantee (a) may have engaged in detrimental activity; or (b) may have accepted employment with another employer or otherwise indicated an intent to resign, the authority may suspend the exercise, delivery or settlement of all or any specified portion of such grantee's outstanding awards pending an investigation of the matter.

XVI. Death; Beneficiary Designation

(1)  Unless otherwise specified in the award, if a grantee dies:

(a)  Any of the grantee's stock options or SARs that are not yet exercisable will become immediately exercisable in full;

(b)  Any remaining restrictions with respect to the grantee's restricted stock or restricted stock units will expire; and

(c)  The administrative authority may alter or accelerate the settlement schedule of any performance stock, performance stock units, deferred stock, deferred stock units, or other award payable on a deferred or installment basis.

(2)  Any rights with respect to an award existing after the grantee dies are exercisable by the grantee's designated beneficiary or, if there is no designated beneficiary, by the grantee's estate representative or lawful heirs as demonstrated to the satisfaction of the administrative authority.  Beneficiary designations must be made in writing and in accordance with such requirements and procedures as the administrative authority may establish.

XVII. Amendments to the Program and Outstanding Awards; Shareholder Approval

(1)  The Board can from time to time amend this Program or halt the grant of new awards under this Program, except that approval of the shareholders of the Corporation will be required for any amendment (other than adjustments under Section VIII):

(a)  To increase the maximum number of shares that may be issued under Section VII;

(b)  To decrease the minimum exercise price per share of a stock option or SAR; or

(c)  That would otherwise materially increase the benefits accruing to participants under the Program.

An amendment of this Program will, unless the amendment provides otherwise, be immediately and automatically effective for all outstanding awards.

(2)  Without amending this Program, the granting authority may amend any one or more outstanding awards under this Program or any other shareholder-approved plan to incorporate in those awards any terms that could be incorporated in a new award under this Program, except that approval of the shareholders of the Corporation will be required for any amendment of an outstanding stock option or SAR to decrease the exercise price per share (other than an adjustment under Section VIII).  An award as amended must satisfy any conditions or limitations applicable to the particular type of award under the terms of this Program.

(3)  Approval of the shareholders of the Corporation will also be required for (a) any cancellation of an outstanding option or SAR in exchange for the grant of a new option or SAR having a lower exercise price per share or (b) any cancellation of an outstanding option or SAR having an exercise price above the current market price of the shares in exchange for another form of award under this Program.

XVIII. Withholding Taxes

The Corporation has the right, in its sole discretion, to deduct or withhold at any time shares, stock units, or cash otherwise payable or deliverable in order to satisfy any required withholding, social security, and similar taxes and contributions with respect to awards under this Program.  Withheld shares may be retained by the Corporation or sold on behalf of the grantee.  Alternatively,

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the Corporation also has the right in its sole discretion, to require the grantee at any time to deposit with the Corporation cash in an amount determined by the Corporation to be necessary to satisfy required withholding, social security, and similar taxes and contributions with respect to awards under this Program.  In its sole discretion, the Corporation may permit the grantee to satisfy all or part of the grantee's obligations under this Section XVIII by delivering, in accordance with any applicable requirements or procedures of the administrative authority, shares previously owned by the grantee.  Shares withheld or delivered in accordance with this Section XVIII will be valued at fair market value.  For this purpose, the administrative authority may establish procedures under which fair market value is determined either on the date of withholding or delivery or as of the immediately preceding day.

XIX. Non-US Awards

Subject to the limitations contained in this Program, the granting authority may establish different terms and conditions for awards to persons who are residents or nationals of countries other than the United States in order to accommodate the local laws, tax policies, or customs of such countries.  Such terms and conditions may include, without limitation, granting cash-only stock appreciation rights or stock units in lieu of or in tandem with share awards.  The granting authority may adopt one or more supplements or sub-plans under this Program to implement those different terms and conditions.

XX. General Provisions

(1)  Shares subject to awards under this Program may either be authorized but unissued shares or previously issued shares that have been reacquired by the Corporation.

(2)  For reporting persons, transactions under this Program are intended to comply with all applicable conditions of Rule 16b-3.  If any provision of this Program or any action by an authority under this Program fails to so comply, such provision or action will, without further action by any person, be deemed to be automatically amended to the extent necessary to effect compliance with Rule 16b-3 or if such provision or action cannot be amended to effect such compliance, be deemed null and void.

(3)  An award under this Program is not transferable except by will or the laws of descent and distribution, and is not subject to attachment, execution, or levy of any kind.  The designation by a grantee of a designated beneficiary is not a transfer for this purpose.

(4)  A particular form of award may be granted to a grantee either alone or in addition to other awards hereunder.  The provisions of particular forms of award need not be the same for each grantee.

(5)  Unless otherwise provided in the terms of an award, an award will not give the grantee any rights as a shareholder until any shares subject to or deliverable in settlement of the award are actually issued and registered in the name of the grantee free of restriction.

(6)  An award may be granted for no consideration, for the minimum consideration required by applicable law, or for such other consideration as the granting authority may determine.

(7)  An award and any shares in settlement of an award may be evidenced in such manner as the administrative authority determines, including by physical instrument or certificate, by electronic communication, or by book entry.  In the event of any dispute or discrepancy regarding the terms of an award, the records of the administrative authority will be determinative.

(8)  The grant of an award under this Program does not constitute or imply a contract of employment and does not in any way limit or restrict the ability of the employer to terminate the grantee's employment, with or without cause, even if such termination results in the expiration, cancellation, or forfeiture of outstanding awards.

(9)  A grantee will have only a contractual right to the shares or amounts, if any, payable in settlement of an award under this Program, unsecured by any assets of the Corporation or any other entity.

(10)  This Program will be governed by the laws of the State of New York and the United States of America, without regard to any conflict of law rules.

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EX-10.(III) (A3)

 

EXHIBIT 10(iii)(a.3)

November 29, 2017

Exxon Mobil Corporation

Extended Provisions for Restricted Stock Unit Agreements - Settlement in Shares

1.Effective Date and Credit of Restricted Stock Units.  If Grantee accepts the award on or before March 5, 2018, this Agreement will become effective the date the Corporation receives the award acceptance. After this agreement becomes effective, the Corporation will credit to Grantee the number of restricted stock units specified in the award package. Subject to the terms and conditions of this Agreement, each restricted stock unit ("unit") will entitle Grantee to receive in settlement of the unit one share of the Corporation's common stock.

2.Conditions.  If credited, the units will be subject to the provisions of this Agreement, and to such regulations and requirements as the administrative authority of the Program may establish from time to time. The units will be credited to Grantee only on the condition that Grantee accepts such provisions, regulations, and requirements.

3.     Restrictions and Risk of Forfeiture. During the applicable restricted periods specified in section 4 of this Agreement,

(a)the units under restriction may not be sold, assigned, transferred, pledged, or otherwise disposed of or encumbered, and any attempt to do so will be null and void; and

(b)the units under restriction may be forfeited as provided in section 6.

4.Restricted Periods.  The restricted periods will commence when the units are credited to Grantee and, unless the units have been forfeited earlier under section 6, will expire as follows, whether or not Grantee is still an employee:

(a)with respect to 50% of the units, on November 29, 2022; and

(b)with respect to the remaining units, on the later to occur of

(i)November 29, 2027, or 

(ii)the first day of the calendar year immediately following the  yearin which Grantee terminates; except that 

(c)the restricted periods will automatically expire with respect to all shares on the death of Grantee.

5.     No Obligation to Credit Units.  The Corporation will have no obligation to credit any units and will have no other obligation to Grantee with respect to the subject matter of this Agreement if Grantee fails to accept the award on or before March 5, 2018. In addition, whether or not Grantee has accepted the award, the Corporation will have no obligation to credit any units and will have no other obligation to Grantee with respectto the subject matter of this Agreement if, before the units are credited: 

(a)Grantee terminates(other  thanby death) beforestandard retirement time within themeaning of the Program, except to theextent the administrativeauthority of the Program determines Grantee may receive units under this Agreement; or 

(b)Grantee is determined to have engaged in detrimental activity within the meaning of the Program. 

6.     Forfeiture of Units After Crediting.  Until the applicable restricted period specified in section 4 has expired, the units under restriction will be forfeited or subject to forfeiture in the following circumstances: 

Termination

IfGrantee terminates (other than by death) before standard retirement time within the meaning of the Program, all units for which the applicable restricted periods have not expired will be automatically forfeited as of the date of termination, except to the extent the administrative authority determines Grantee may retain units issued under this Agreement. 

Detrimentalactivity 

IfGrantee is determined to have engaged in detrimental activity within the meaning of the Program, either before or after termination, all units for which the applicable restricted periods have not expired will be automatically forfeited as of the date of such determination. 

Attemptedtransfer 

Theunits are subject to forfeiture in the discretion of the administrative authority if Grantee attempts to sell,assign, transfer, pledge, or otherwise dispose of or encumber them during the applicable restricted periods. 

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Applicable law

The units are subject to forfeiture in whole or in part as the administrative authority deems necessary to comply with applicable law or Corporation policy including, without limitation, any clawback obligations determined to be owed by Grantee to the Corporation in connection with this or other awards.

7.Taxes.  Notwithstanding the restrictions on transfer that otherwise apply, the Corporation in its sole discretion may withhold units, or shares otherwise deliverable in settlement of units, either at the time of crediting, at the time of settlement, or at any other time in order to satisfy any required withholding, social security, and similar taxes or contributions (collectively, "required taxes"). Withheld units or shares may be retained by the Corporation or sold on behalf of Grantee. The Corporation in its sole discretion may also withhold any required taxes from dividend equivalents paid on the units.

8.Form of Units; No Shareholder Status.  The units will be represented by book-entry credits in records maintained by or on behalf of the Corporation. Units will be unfunded and unsecured promises by the Corporation to deliver shares in the future upon the terms and subject to the conditions of this Agreement. Grantee will not be a shareholder of the Corporation with respect to units prior to the time shares are actually registered in Grantee's name in settlement of such units in accordance with section 9.

9.Settlement of Units.  If and when the applicable restricted period expires with respect to any units, subject to section 7, the Corporation will issue shares, free of restriction and registered in the name of Grantee, in settlement of such units.  Such shares will be delivered promptly after such expiration to or for the account of Grantee either in certificated form or by book-entry transfer in accordance with the procedures of the administrative authority in effect at the time.

10.Dividend Equivalents.  The Corporation will pay to Grantee cash with respect to each credited unit corresponding in amount, currency, and timing to cash dividends that would be payable with respect to a share of common stock outstanding on each record date that occurs during the applicable restricted period. Alternatively, the administrative authority may determine to reinvest such dividend equivalents in additional units which will be held subject to all the terms and conditions otherwise applicable to units under this Agreement.

11.Change in Capitalization.  If during the applicable restricted periods a stock split, stock dividend, or other relevant change in capitalization of the Corporation occurs, the administrative authority will make such adjustments in the number of units credited to Grantee, or in the number and type of securities deliverable to Grantee in settlement of such units and used in determining dividend equivalent amounts, as the administrative authority may determine to be appropriate. Any resulting new units or securities credited with respect to previously credited units that are still restricted under this Agreement will be delivered to and held by or on behalf of the Corporation and will be subject to the same provisions, restrictions, and requirements as those previously credited units.

12.Limits on the Corporation’s Obligations.  Notwithstanding anything else contained in this Agreement, under no circumstances will the Corporation be required to credit any units or issue or deliver any shares in settlement of units if doing so would violate any law or listing requirement that the administrative authority determines to be applicable.

13.Receipt or Access to Program.  Grantee acknowledges receipt of or access to the full text of the Program.

14.Addresses for Communications.  To facilitate communications regarding this Agreement, Grantee agrees to notify the Corporation promptly of changes in current mailing and email addresses. Communications to the Corporation in connection with this Agreement should be directed to the Incentive Processing Office, or to such other address as the Corporation may designate by further notice to Grantee.

15.Transfer of Personal Data.  The administration of the Program and this Agreement, including any subsequent ownership of shares, involve the collection, use, and transfer of personal data about Grantee between and among the Corporation, selected subsidiaries and other affiliates of the Corporation, and third-party service providers such as Morgan Stanley and Computershare (the Corporation's transfer agent), as well as various regulatory and tax authorities around the world. This data includes Grantee's name, age, date of birth, contact information, work location, employment status, tax status, social security number, salary, nationality, job title, share ownership, and details of incentive awards granted, cancelled, vested or unvested, and related information. By accepting this award, Grantee authorizes such collection, use, and transfer of this data. Grantee may, at any time and without charge, view such data and require necessary corrections to it. Such data will at all times be held in accordance with applicable laws, regulations, and agreements.

2

16.No Employment Contract or Entitlement to Other or Future Awards.  This Agreement, the Corporation's incentive programs, and Grantee's selection for incentive awards do not imply or form a part of any contract or assurance of employment, and they do not in any way limit or restrict the ability of Grantee's employer to terminate Grantee's employment. Grantee acknowledges that the Corporation maintains and administers its incentive programs entirely in its discretion and that Grantee is not entitled to any other or future incentive awards of any kind in addition to those that have already been granted.

17.Governing Law and Consent to Jurisdiction.  This Agreement and the Program are governed by the laws of the State of New York without regard to any conflict of law rules. Any dispute arising out of or relating to this Agreement or the Program may be resolved in any state or federal court located within Dallas County, Texas, U.S.A. Grantee accepts that venue and submits to the personal jurisdiction of any such court. Similarly, the Corporation accepts such venue and submits to such jurisdiction.

18.Entire Agreement.  This Agreement constitutes the entire understanding between Grantee and the Corporation with respect to the subject matter of this Agreement.

3

EX-10.(III) (B2)

 

EXHIBIT 10(iii)(b.2)

EXXON MOBIL CORPORATION

EARNINGS BONUS UNIT AWARD

		Maximum	Maximum
		Settlement	Settlement
	Number	Value Per	Value of
Name of Grantee	of EBUs	EBU	Award
		$6.50

This EARNINGS BONUS UNIT AWARD is granted in Dallas County, Texas by Exxon Mobil Corporation (the "Corporation") effective November 29, 2017 (the "date of grant"), pursuant to the Short Term Incentive Program adopted by the Board of Directors of the Corporation on October 27, 1993, as amended (the "Program"). This award is subject to the provisions of this instrument and the Program and to such regulations and requirements as may be stipulated from time to time by the administrative authority defined in the Program and is granted on the condition that Grantee accepts such provisions, regulations, and requirements. This instrument incorporates by reference the provisions of the Program, as it may be amended from time to time, including without limitation the definitions of terms used in this instrument and defined in the Program.

1. Award. The Corporation has granted to Grantee the number of earnings bonus units ("EBUs") set forth above, with each EBU having the maximum settlement value set forth above. Subject to the other terms of this award, Grantee has the right, for each of these EBUs, to receive from the Corporation, promptly after the settlement date defined below, an amount of cash equal to the Corporation's cumulative earnings per common share (assuming dilution) as reflected in its quarterly earnings statements as initially filed in its quarterly or annual reports with the U.S. Securities and Exchange Commission commencing with earnings for the first full quarter following the date of grant to and including the last full quarter preceding the settlement date; provided, however, that the amount of such settlement will not exceed the maximum settlement value specified above.

2. Settlement Date. The settlement date of these EBUs will be the earlier of (i) the date of publication of the Corporation's quarterly earnings statement for the twelfth (12th) full quarter following the date of grant, or (ii) the date of publication of the Corporation's quarterly earnings statement which brings the cumulative earnings per common share (assuming dilution) as initially filed in its quarterly or annual reports with the U.S. Securities and Exchange Commission commencing with the first full quarter following the date of grant to an amount at least equal to the maximum settlement value per EBU specified above.

3. Annulment. This award is provisional until the Corporation actually pays cash in settlement of the award.

(a) If, before the Corporation pays such cash, Grantee terminates (other than by death) before standard retirement time within the meaning of the Program, this award will automatically expire as of the date of termination, except to the extent the administrative authority determines Grantee may retain this award.

(b) If, before the Corporation pays such cash, Grantee is determined to have engaged in detrimental activity within the meaning of the Program, this award will automatically expire as of the date of such determination.

(c) Provisional awards held by executive officers may also be subject to cancellation to comply with applicable law or Corporation policy including, without limitation, any clawback obligations determined to be owed by Grantee to the Corporation in connection with this or other awards.

4. Adjustments. The number of EBUs covered by this award and the meaning of the term "common share" will be adjusted by the administrative authority as it deems appropriate to give effect to any stock split, stock dividend or other relevant change in capitalization of the Corporation after the date of grant and prior to the settlement date.

5. Governing Law and Consent to Jurisdiction. This award and the Program are governed by the laws of the State of New York without regard to any conflict of law rules. Any dispute arising out of or relating to this award or the Program may be resolved in any state or federal court located within Dallas County, Texas, U.S.A. This award is issued on the condition that Grantee accepts such venue and submits to the personal jurisdiction of any such court. Similarly, the Corporation accepts such venue and submits to such jurisdiction.

EXXON MOBIL CORPORATION

EX-12

 

EXHIBIT 12

EXXON MOBIL CORPORATION
COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
		Years Ended December 31,
		2017	2016	2015	2014	2013
		(millions of dollars)
Income from continuing operations attributable to ExxonMobil		19,710	7,840	16,150	32,520	32,580
Excess/(shortfall) of dividends over earnings of affiliates
	accounted for by the equity method	131	(579)	(691)	(358)	3
Provision for income taxes		(1,174)	(406)	5,415	18,015	24,263
Capitalized interest		(252)	(224)	(7)	121	148
Noncontrolling interests in earnings of consolidated subsidiaries		138	535	401	1,095	868
		18,553	7,166	21,268	51,393	57,862
Fixed Charges:
	Interest expense - borrowings	465	390	211	157	137
	Capitalized interest	749	708	482	344	309
	Rental cost representative of interest factor	303	433	585	618	612
		1,517	1,531	1,278	1,119	1,058
Total adjusted earnings available for payment of fixed charges		20,070	8,697	22,546	52,512	58,920
Number of times fixed charges are earned		13.2	5.7	17.6	46.9	55.7

EX-14

 

EXHIBIT 14

CODE OF ETHICS AND BUSINESS CONDUCT

Ethics Policy

The policy of Exxon Mobil Corporation is to comply with all governmental laws, rules, and regulations applicable to its business.

The Corporation's Ethics policy does not stop there. Even where the law is permissive, the Corporation chooses the course of highest integrity. Local customs, traditions, and mores differ from place to place, and this must be recognized. But honesty is not subject to criticism in any culture. Shades of dishonesty simply invite demoralizing and reprehensible judgments. A well-founded reputation for scrupulous dealing is itself a priceless corporate asset.

The Corporation cares how results are obtained, not just that they are obtained. Directors, officers, and employees should deal fairly with each other and with the Corporation's suppliers, customers, competitors, and other third parties.

The Corporation expects compliance with its standard of integrity throughout the organization and will not tolerate employees who achieve results at the cost of violation of law or who deal unscrupulously. The Corporation's directors and officers support, and expect the Corporation's employees to support, any employee who passes up an opportunity or advantage that would sacrifice ethical standards.

It is the Corporation's policy that all transactions will be accurately reflected in its books and records. This, of course, means that falsification of books and records and the creation or maintenance of any off-the-record bank accounts are strictly prohibited. Employees are expected to record all transactions accurately in the Corporation's books and records, and to be honest and forthcoming with the Corporation's internal and independent auditors.

The Corporation expects candor from employees at all levels and adherence to its policies and internal controls. One harm which results when employees conceal information from higher management or the auditors is that other employees think they are being given a signal that the Corporation's policies and internal controls can be ignored when they are inconvenient. That can result in corruption and demoralization of an organization. The Corporation's system of management will not work without honesty, including honest bookkeeping, honest budget proposals, and honest economic evaluation of projects.

It is the Corporation's policy to make full, fair, accurate, timely, and understandable disclosure in reports and documents that the Corporation files with the United States Securities and Exchange Commission, and in other public communications. All employees are responsible for reporting material information known to them to higher management so that the information will be available to senior executives responsible for making disclosure decisions.

Conflicts of Interest Policy

It is the policy of Exxon Mobil Corporation that directors, officers, and employees are expected to avoid any actual or apparent conflict between their own personal interests and the interests of the Corporation. A conflict of interest can arise when a director, officer, or employee takes actions or has personal interests that may interfere with his or her objective and effective performance of work for the Corporation. For example, directors, officers, and employees are expected to avoid actual or apparent conflict in dealings with suppliers, customers, competitors, and other third parties. Directors, officers, and employees are expected to refrain from taking for themselves opportunities discovered through their use of corporate assets or through their positions with the Corporation. Directors, officers, and employees are expected to avoid securities transactions based on material, nonpublic information learned through their positions with the Corporation. Directors, officers, and employees are expected to refrain from competing with the Corporation.

1

Corporate Assets Policy

It is the policy of Exxon Mobil Corporation that directors, officers, and employees are expected to protect the assets of the Corporation and use them efficiently to advance the interests of the Corporation. Those assets include tangible assets and intangible assets, such as confidential information of the Corporation or personal information held by the Corporation. No director, officer, or employee should use or disclose at any time during or subsequent to employment or other service to the Corporation, without proper authority or mandate, personal or confidential information obtained from any source in the course of the Corporation’s business. Examples of confidential information include nonpublic information about the Corporation’s plans, earnings, financial forecasts, business forecasts, discoveries, competitive bids, technologies, and personnel.

Directorships Policy

It is the policy of Exxon Mobil Corporation to restrict the holding by officers and employees of directorships in nonaffiliated, for-profit organizations and to prohibit the acceptance by any officer or employee of such directorships that would involve a conflict of interest with, or interfere with, the discharge of the officer's or employee's duties to the Corporation. Any officer or employee may hold directorships in nonaffiliated, nonprofit organizations, unless such directorships would involve a conflict of interest with, or interfere with, the discharge of the officer's or employee's duties to the Corporation, or obligate the Corporation to provide support to the nonaffiliated, nonprofit organizations. Officers and employees may serve as directors of affiliated companies and such service may be part of their normal work assignments.

All directorships in public companies held by directors of the Corporation are subject to review and approval by the Board of Directors of the Corporation. In all other cases, directorships in nonaffiliated, for-profit organizations are subject to review and approval by the management of the Corporation, as directed by the Chairman.

Procedures and Open Door Communication

Exxon Mobil Corporation encourages employees to ask questions, voice concerns, and make appropriate suggestions regarding the business practices of the Corporation. Employees are expected to report promptly to management suspected violations of law, the Corporation's policies, and the Corporation's internal controls, so that management can take appropriate corrective action. The Corporation promptly investigates reports of suspected violations of law, policies, and internal control procedures.

Management is ultimately responsible for the investigation of and appropriate response to reports of suspected violations of law, policies, and internal control procedures. Internal Audit has primary responsibility for investigating violations of the Corporation's internal controls, with assistance from others, depending on the subject matter of the inquiry. The persons who investigate suspected violations are expected to exercise independent and objective judgment.

Normally, an employee should discuss such matters with the employee's immediate supervisor. Each supervisor is expected to be available to subordinates for that purpose. If an employee is dissatisfied following review with the employee's immediate supervisor, that employee is encouraged to request further reviews, in the presence of the supervisor or otherwise. Reviews should continue to the level of management appropriate to resolve the issue.

Depending on the subject matter of the question, concern, or suggestion, each employee has access to alternative channels of communication, for example, the Controller's Department; Internal Audit; the Human Resources Department; the Law Department; the Safety, Health and Environment Department; the Security Department; and the Treasurer's Department.

Suspected violations of law or the Corporation's policies involving a director or executive officer, as well as any concern regarding questionable accounting or auditing matters, should be referred directly to the General Auditor of the Corporation. The Board Affairs Committee of the Board of Directors of the Corporation will initially review all issues involving directors or executive officers, and will then refer all such issues to the Board of Directors of the Corporation.

Employees may also address communications to individual nonemployee directors or to the nonemployee directors as a group by writing them at Exxon Mobil Corporation, 5959 Las Colinas Boulevard, Irving, Texas 75039, U.S.A., or such other addresses as the Corporation may designate and publish from time to time.

2

Employees wishing to make complaints without identifying themselves may do so by telephoning 1‑800‑963‑9966 or 1‑972‑444‑1990, or by writing the Global Security Manager, Exxon Mobil Corporation, P.O. Box 142106, Irving, Texas 75014, U.S.A., or such other telephone numbers and addresses as the Corporation may designate and publish from time to time. All complaints to those telephone numbers and addresses concerning accounting, internal accounting controls, or auditing matters will be referred to the Audit Committee of the Board of Directors of the Corporation.

All persons responding to employees' questions, concerns, complaints, and suggestions are expected to use appropriate discretion regarding anonymity and confidentiality, although the preservation of anonymity and confidentiality may or may not be practical, depending on the circumstances. For example, investigations of significant complaints typically necessitate revealing to others information about the complaint and complainant. Similarly, disclosure can result from government investigations and litigation.

No action may be taken or threatened against any employee for asking questions, voicing concerns, or making complaints or suggestions in conformity with the procedures described above, unless the employee acts with willful disregard of the truth.

Failure to behave honestly, and failure to comply with law, the Corporation's policies, and the Corporation's internal controls may result in disciplinary action, up to and including separation.

No one in the Corporation has the authority to make exceptions or grant waivers to the Corporation's foundation policies. It is recognized that there will be questions about the application of the policies to specific activities and situations. In cases of doubt, directors, officers, and employees are expected to seek clarification and guidance. In those instances where the Corporation, after review, approves an activity or situation, the Corporation is not granting an exception or waiver but is determining that there is no policy violation. If the Corporation determines that there is or would be a policy violation, appropriate action is taken.

3

EX-18

 

EXHIBIT 18

February 28, 2018

Board of Directors

Exxon Mobil Corporation

5959 Las Colinas Boulevard

Irving, Texas 75039

Dear Directors:

We are providing this letter to you for inclusion as an exhibit to Exxon Mobil Corporation’s (the “Corporation”) Annual Report on Form 10-K for the year ended December 31, 2017 (the “Form 10-K”) pursuant to Item 601 of Regulation S-K.

We have audited the consolidatedfinancial statements included in the Form 10-K and issued our report thereon dated February 28, 2018.  Note 2 “Accounting Changes”to the financial statements describes a change in accounting principle related to the reporting of certain sales and value-added taxes imposed on and concurrent with revenue-producing transactions with customers and collected on behalf of governmental authorities (“Sales-based taxes”) from gross reporting of Sales-based taxes on the Consolidated Statement of Income (included in both “Sales and other operating revenue” and “Sales-based taxes”) to net reporting (excluded from both “Sales and other operating revenue” and “Sales-based taxes”).  It should be understood that the preferability of one acceptable method of accounting over another for Sales-based taxes has not been addressed in any authoritative accounting literature, and in expressing our concurrence below we have relied on management’s determination that this change in accounting principle is preferable.  Based on our reading of management’s stated reasons and justification for this change in accounting principle in the Form 10-K, and our discussions with management as to their judgment about the relevant business planning factors relating to the change, we concur with management that such change represents, in the Corporation’s circumstances, the adoption of a preferable accounting principle in conformity with Accounting Standards Codification 250, Accounting Changes and Error Corrections. 

Very truly yours,

/s/ PricewaterhouseCoopers LLP

Dallas, Texas

EX-21

 

EXHIBIT 21

Subsidiaries of the Registrant (1), (2) and (3)  – at December 31, 2017

	Percentage of Voting Securities Owned Directly or Indirectly by Registrant	State or Country of Organization
Aera Energy LLC (5)	48.2	California
AKG Marketing Company Limited	87.5	Bahamas
Al-Jubail Petrochemical Company (4) (5)	50	Saudi Arabia
Ampolex (Cepu) Pte Ltd	100	Singapore
Ancon Insurance Company, Inc.	100	Vermont
Barnett Gathering, LLC	100	Texas
Barzan Gas Company Limited (5)	7	Qatar
BEB Erdgas und Erdoel GmbH & Co. KG (4) (5)	50	Germany
Cameroon Oil Transportation Company S.A. (5)	41.06	Cameroon
Canada Imperial Oil Limited	69.6	Canada
Caspian Pipeline Consortium (5)	7.5	Russia/Kazakhstan
Cross Timbers Energy, LLC (4) (5)	50	Delaware
Ellora Energy Inc.	100	Delaware
Esso Australia Pty Ltd	100	Australia
Esso Australia Resources Pty Ltd	100	Australia
Esso Deutschland GmbH	100	Germany
Esso Erdgas Beteiligungsgesellschaft mbH	100	Germany
Esso Exploration and Production Angola (Overseas) Limited	100	Bahamas
Esso Exploration and Production Chad Inc.	100	Bahamas
Esso Exploration and Production Guyana Limited	100	Bahamas
Esso Exploration and Production Nigeria (Deepwater) Limited	100	Nigeria
Esso Exploration and Production Nigeria (Offshore East) Limited	100	Nigeria
Esso Exploration and Production Nigeria Limited	100	Nigeria
Esso Exploration and Production UK Limited	100	United Kingdom
Esso Exploration Angola (Block 15) Limited	100	Bahamas
Esso Exploration Angola (Block 17) Limited	100	Bahamas
Esso Global Investments Ltd.	100	Bahamas
Esso Italiana S.r.l.	100	Italy
Esso Nederland B.V.	100	Netherlands
Esso Norge AS	100	Norway
Esso Petroleum Company, Limited	100	United Kingdom
Esso Raffinage	82.89	France
Esso Societe Anonyme Francaise	82.89	France
Esso (Thailand) Public Company Limited	65.99	Thailand
Exxon Azerbaijan Limited	100	Bahamas
Exxon Chemical Arabia Inc.	100	Delaware
Exxon International Finance Company	100	Delaware
Exxon Luxembourg Holdings LLC	100	Delaware
Exxon Mobile Bay Limited Partnership	100	Delaware
Exxon Neftegas Limited	100	Bahamas
Exxon Overseas Corporation	100	Delaware
Exxon Overseas Investment Corporation	100	Delaware
ExxonMobil (China) Investment Co., Ltd.	100	China

1

	Percentage of Voting Securities Owned Directly or Indirectly by Registrant	State or Country of Organization
ExxonMobil (Taicang) Petroleum Co., Ltd.	100	China
ExxonMobil Abu Dhabi Offshore Petroleum Company Limited	100	Bahamas
ExxonMobil Alaska Production Inc.	100	Delaware
ExxonMobil Asia Pacific Pte. Ltd.	100	Singapore
ExxonMobil Australia Pty Ltd	100	Australia
ExxonMobil Barzan Limited	100	Bahamas
ExxonMobil Canada Ltd.	100	Canada
ExxonMobil Canada Properties	100	Canada
ExxonMobil Canada Resources Company	100	Canada
ExxonMobil Capital Netherlands B.V.	100	Netherlands
ExxonMobil Cepu Limited	100	Bermuda
ExxonMobil Chemical France	100	France
ExxonMobil Chemical Holland B.V.	100	Netherlands
ExxonMobil Chemical Limited	100	United Kingdom
ExxonMobil Chemical Operations Private Limited	100	Singapore
ExxonMobil Chemical Services (Shanghai) Co., Ltd.	100	China
ExxonMobil China Petroleum & Petrochemical Company Limited	100	Bahamas
ExxonMobil Delaware Holdings Inc.	100	Delaware
ExxonMobil Development Africa B.V.	100	Netherlands
ExxonMobil Development Company	100	Delaware
ExxonMobil Egypt (S.A.E.)	100	Egypt
ExxonMobil Exploracao Brasil Ltda.	100	Brazil
ExxonMobil Exploration and Production Malaysia Inc.	100	Delaware
ExxonMobil Exploration and Production Norway AS	100	Norway
ExxonMobil Exploration and Production Romania Limited	100	Bahamas
ExxonMobil Exploration and Production Tanzania Limited	100	Bahamas
ExxonMobil Finance Company Limited	100	United Kingdom
ExxonMobil Financial Investment Company Limited	100	United Kingdom
ExxonMobil France Holding SAS	100	France
ExxonMobil Gas Marketing Europe Limited	100	United Kingdom
ExxonMobil General Finance Company	100	Delaware
ExxonMobil Global Services Company	100	Delaware
ExxonMobil Holding Company Holland LLC	100	Delaware
ExxonMobil Holding Norway AS	100	Norway
ExxonMobil Hong Kong Limited	100	Hong Kong
ExxonMobil International Services SARL	100	Luxembourg
ExxonMobil Iraq Limited	100	Bahamas
ExxonMobil Italiana Gas S.r.l.	100	Italy
ExxonMobil Kazakhstan Inc.	100	Bahamas
ExxonMobil Kazakhstan Ventures Inc.	100	Delaware
ExxonMobil Lubricants Trading Company	100	Delaware
ExxonMobil Oil Corporation	100	New York
ExxonMobil Pensions-Verwaltungsgesellschaft mbH	100	Germany
ExxonMobil Petroleum & Chemical BVBA	100	Belgium
ExxonMobil Petroleum & Chemical Holdings Inc.	100	Delaware
ExxonMobil Petroleum Finance Company	100	Delaware

2

	Percentage of Voting Securities Owned Directly or Indirectly by Registrant	State or Country of Organization
ExxonMobil Pipeline Company	100	Delaware
ExxonMobil PNG Limited	100	Papua New Guinea
ExxonMobil Producing Netherlands B.V.	100	Netherlands
ExxonMobil Production Deutschland GmbH	100	Germany
ExxonMobil Production Norway Inc.	100	Delaware
ExxonMobil Qatargas Inc.	100	Delaware
ExxonMobil Qatargas (II) Limited	100	Bahamas
ExxonMobil Ras Laffan (III) Limited	100	Bahamas
ExxonMobil Rasgas Inc.	100	Delaware
ExxonMobil Research and Engineering Company	100	Delaware
ExxonMobil Russia Kara Sea Holdings B.V.	100	Netherlands
ExxonMobil Sales and Supply LLC	100	Delaware
ExxonMobil Technology Finance Company	100	Delaware
ExxonMobil Ventures Finance Company	100	Delaware
ExxonMobil Ventures Funding Ltd.	100	Bahamas
Fujian Refining & Petrochemical Co. Ltd. (5)	25	China
GCGV Asset Holding LLC (4) (5)	50	Delaware
Golden Pass LNG Terminal Investments LLC	100	Delaware
Golden Pass LNG Terminal LLC (5)	17.6	Delaware
Imperial Oil Limited	69.6	Canada
Imperial Oil Resources Limited	69.6	Canada
Imperial Oil Resources N.W.T. Limited	69.6	Canada
Imperial Oil/Petroliere Imperiale	69.6	Canada
Infineum Holdings B.V. (4) (5)	50	Netherlands
Infineum Italia s.r.I. (4) (5)	50	Italy
Infineum Singapore Pte. Ltd. (4) (5)	50	Singapore
Infineum USA L.P. (4) (5)	50	Delaware
Karmorneftegaz Holding SARL (5)	33.33	Luxembourg
Marine Well Containment Company LLC (5)	10	Delaware
Mobil Africa Sales Inc.	100	Delaware
Mobil Australia Resources Company Pty Limited	100	Australia
Mobil California Exploration & Producing Asset Company	100	Delaware
Mobil Caspian Pipeline Company	100	Delaware
Mobil Chemical Products International Inc.	100	Delaware
Mobil Corporation	100	Delaware
Mobil Equatorial Guinea Inc.	100	Delaware
Mobil Erdgas Verwaltungsgesellschaft mbH	100	Germany
Mobil Exploration & Producing Australia Pty Ltd	100	Australia
Mobil International Petroleum Corporation	100	Delaware
Mobil Oil Australia Pty Ltd	100	Australia
Mobil Oil Exploration & Producing Southeast Inc.	100	Delaware
Mobil Oil New Zealand Limited	100	New Zealand
Mobil Producing Nigeria Unlimited	100	Nigeria
Mobil Producing Texas & New Mexico Inc.	100	Delaware
Mobil Services (Bahamas) Limited	100	Bahamas
Mobil Yanbu Petrochemical Company Inc.	100	Delaware

3

	Percentage of Voting Securities Owned Directly or Indirectly by Registrant	State or Country of Organization
Mobil Yanbu Refining Company Inc.	100	Delaware
Mountain Gathering, LLC	100	Delaware
Mozambique Rovuma Venture, S.p.A. (5)	35.714	Italy
Nederlandse Aardolie Maatschappij B.V. (4) (5)	50	Netherlands
Palmetto Transoceanic LLC	100	Delaware
Papua New Guinea Liquefied Natural Gas Global Company LDC (5)	33.2	Bahamas
Permian Express Partners LLC (5)	12.3	Delaware
Phillips Exploration, LLC	100	Delaware
Qatar Liquefied Gas Company Limited (5)	10	Qatar
Qatar Liquefied Gas Company Limited (2) (5)	24.15	Qatar
Ras Laffan Liquefied Natural Gas Company Limited (5)	24.999	Qatar
Ras Laffan Liquefied Natural Gas Company Limited (II) (5)	30.517	Qatar
Ras Laffan Liquefied Natural Gas Company Limited (3) (5)	30	Qatar
Saudi Aramco Mobil Refinery Company Ltd. (4) (5)	50	Saudi Arabia
Saudi Yanbu Petrochemical Co. (4) (5)	50	Saudi Arabia
SeaRiver Maritime, Inc.	100	Delaware
South Hook LNG Terminal Company Limited (5)	24.15	United Kingdom
SPI (208) Limited	100	Papua New Guinea
Tengizchevroil, LLP (5)	25	Kazakhstan
Terminale GNL Adriatico S.r.l (5)	70.678	Italy
Thru Line O&G NM, L.L.C.	100	Texas
Trend Gathering & Treating, LLC	100	Texas
Wolverine Pipe Line Company	53.39	Delaware
XH, LLC	100	Delaware
XTO Energy Canada	84.80	Canada
XTO Energy Inc.	100	Delaware
XTO Holdings, LLC	100	Delaware

______________

NOTES:

(1)	For the purposes of this list, if the registrant owns directly or indirectly approximately 50 percent of the voting securities of any person and approximately 50 percent of the voting securities of such person is owned directly or indirectly by another interest, or if the registrant includes its share of net income of any other unconsolidated person in consolidated net income, such person is deemed to be a subsidiary.
(2)	With respect to certain companies, shares in names of nominees and qualifying shares in names of directors are included in the above percentages.
(3)	The names of other subsidiaries have been omitted from the above list since considered in the aggregate, they would not constitute a significant subsidiary under Securities and Exchange Commission Regulation S-X, Rule 1-02(w).
(4)	The registrant owns directly or indirectly approximately 50 percent of the securities of this person and approximately 50 percent of the voting securities of this person is owned directly or indirectly by another single interest.
(5)	The investment in this unconsolidated person is represented by the registrant's percentage interest in the underlying net assets of such person. The accounting for these unconsolidated persons is referred to as the equity method of accounting.

4

EX-23

 

EXHIBIT 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the following Exxon Mobil Corporation Registration Statements on:

Form S-3	(No.	333-216594	—	Exxon Mobil Corporation Debt Securities;
Form S-8	(Nos.	333-145188,	—	2003 Incentive Program of Exxon Mobil Corporation;
		333-110494,
	and	333-183012)
Form S-8	(No.	333-166576)	—	ExxonMobil Savings Plan;
Form S-8	(No.	333-117980)	—	2004 Non-employee Director Restricted Stock Plan

of our report dated February 28, 2018, relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

Dallas, Texas

February 28, 2018

EX-31.1

 

EXHIBIT 31.1

Certification by Darren W. Woods

Pursuant to Securities Exchange Act Rule 13a-14(a) 

I, Darren W. Woods, certify that:

1.I have reviewed this annual report on Form 10-K of Exxon Mobil Corporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: February 28, 2018	/s/  DARREN W. WOODS
	Darren W. Woods
	Chief Executive Officer

EX-31.2

 

EXHIBIT 31.2

Certification by Andrew P. Swiger

Pursuant to Securities Exchange Act Rule 13a-14(a) 

I, Andrew P. Swiger, certify that:

1.I have reviewed this annual report on Form 10-K of Exxon Mobil Corporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: February 28, 2018	/s/  ANDREW P. SWIGER
	Andrew P. Swiger
	Senior Vice President
	(Principal Financial Officer)

EX-31.3

 

EXHIBIT 31.3

Certification by David S. Rosenthal

Pursuant to Securities Exchange Act Rule 13a-14(a) 

I, David S. Rosenthal, certify that:

1.I have reviewed this annual report on Form 10-K of Exxon Mobil Corporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: February 28, 2018	/s/  DAVID S. ROSENTHAL
	David S. Rosenthal
	Vice President and Controller
	(Principal Accounting Officer)

EX-32.1

 

EXHIBIT 32.1

Certification of Periodic Financial Report

Pursuant to 18 U.S.C. Section 1350

For purposes of 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned, Darren W. Woods, the chief executive officer of Exxon Mobil Corporation (the “Company”), hereby certifies that, to his knowledge:

(i)the Annual Report on Form 10-K of the Company for the year ended December 31, 2017, as filed with the Securities and Exchange Commission on the date hereof (the “Report”) fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(ii)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: February 28, 2018	/s/  DARREN W. WOODS
	Darren W. Woods
	Chief Executive Officer

A signed original of this written statement required by Section 906 has been provided to Exxon Mobil Corporation and will be retained by Exxon Mobil Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

 

EXHIBIT 32.2

Certification of Periodic Financial Report

Pursuant to 18 U.S.C. Section 1350

For purposes of 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned, Andrew P. Swiger, the principal financial officer of Exxon Mobil Corporation (the “Company”), hereby certifies that, to his knowledge:

(i)the Annual Report on Form 10-K of the Company for the year ended December 31, 2017, as filed with the Securities and Exchange Commission on the date hereof (the “Report”) fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(ii)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: February 28, 2018	/s/  ANDREW P. SWIGER
	Andrew P. Swiger
	Senior Vice President
	(Principal Financial Officer)

A signed original of this written statement required by Section 906 has been provided to Exxon Mobil Corporation and will be retained by Exxon Mobil Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.3

 

EXHIBIT 32.3

Certification of Periodic Financial Report

Pursuant to 18 U.S.C. Section 1350

For purposes of 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned, David S. Rosenthal, the principal accounting officer of Exxon Mobil Corporation (the “Company”), hereby certifies that, to his knowledge:

(i)the Annual Report on Form 10-K of the Company for the year ended December 31, 2017, as filed with the Securities and Exchange Commission on the date hereof (the “Report”) fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(ii)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: February 28, 2018	/s/  DAVID S. ROSENTHAL
	David S. Rosenthal
	Vice President and Controller
	(Principal Accounting Officer)

A signed original of this written statement required by Section 906 has been provided to Exxon Mobil Corporation and will be retained by Exxon Mobil Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document And Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2017	Jan. 31, 2018	Jun. 30, 2017
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2017
Trading Symbol	XOM
Entity Registrant Name	EXXON MOBIL CORP
Entity Central Index Key	0000034088
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		4,237,462,159
Entity Public Float			$ 342

XML

Consolidated Statement Of Income - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Revenues and other income
Sales and other operating revenue	[1]	$ 237,162	$ 200,628	[2]	$ 239,854	[2]
Income from equity affiliates		5,380	4,806		7,644
Other income		1,821	2,680		1,750
Total revenues and other income		244,363	208,114		249,248
Costs and other deductions
Crude oil and product purchases		128,217	104,171		130,003
Production and manufacturing expenses		34,128	31,927		35,587
Selling, general and administrative expenses		10,956	10,799		11,501
Depreciation and depletion		19,893	22,308		18,048
Exploration expenses, including dry holes		1,790	1,467		1,523
Interest expense		601	453		311
Other taxes and duties		30,104	29,020		30,309
Total costs and other deductions		225,689	200,145		227,282
Income before income taxes		18,674	7,969		21,966
Income taxes		(1,174)	(406)		5,415
Net income including noncontrolling interests		19,848	8,375		16,551
Net income attributable to noncontrolling interests		138	535		401
Net income attributable to ExxonMobil		$ 19,710	$ 7,840		$ 16,150
Earnings per common share (dollars)	[3]	$ 4.63	$ 1.88		$ 3.85
Earnings per common share - assuming dilution (dollars)		$ 4.63	$ 1.88		$ 3.85

[1] Effective December 31, 2017, the Corporation revised its accounting policy election related to sales-based taxes. See Note 2: Accounting Changes.

[2] Sales and other operating revenue excludes previously reported sales-based taxes of $17,980 million for 2016 and $19,634 million for 2015. See Note 2: Accounting Changes.

[3] The earnings per common share and earnings per common share - assuming dilution are the same in each period shown.

XML

Consolidated Statement Of Income (Parenthetical) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015
Consolidated Statement Of Income [Abstract]
Sales-based taxes included in sales and other operating revenue	[1]	$ 17,980	$ 19,634

[1] Sales and other operating revenue excludes previously reported sales-based taxes of $17,980 million for 2016 and $19,634 million for 2015. See Note 2: Accounting Changes.

XML

Consolidated Statement Of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Consolidated Statement Of Comprehensive Income [Abstract]
Net income including noncontrolling interests	$ 19,848	$ 8,375	$ 16,551
Other comprehensive income (net of income taxes)
Foreign exchange translation adjustment	5,352	(174)	(9,303)
Adjustment for foreign exchange translation (gain)/loss included in net income	234		(14)
Postretirement benefits reserves adjustment (excluding amortization)	(219)	493	2,358
Amortization and settlement of postretirement benefits reserves adjustment included in net periodic benefit costs	1,165	1,086	1,448
Unrealized change in fair value of stock investments			33
Realized (gain)/ loss from stock investments included in net income			27
Total other comprehensive income	6,532	1,405	(5,451)
Comprehensive income including noncontrolling interests	26,380	9,780	11,100
Comprehensive income attributable to noncontrolling interests	693	668	(496)
Comprehensive income attributable to ExxonMobil	$ 25,687	$ 9,112	$ 11,596

XML

Consolidated Balance Sheet - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 3,177	$ 3,657
Notes and accounts receivable, less estimated doubtful amounts	25,597	21,394
Inventories
Crude oil, products and merchandise	12,871	10,877
Materials and supplies	4,121	4,203
Other current assets	1,368	1,285
Total current assets	47,134	41,416
Investments, advances and long-term receivables	39,160	35,102
Property, plant and equipment, at cost, less accumulated depreciation and depletion	252,630	244,224
Other assets, including intangibles, net	9,767	9,572
Total assets	348,691	330,314
Current liabilities
Notes and loans payable	17,930	13,830
Accounts payable and accrued liabilities	36,796	31,193
Income taxes payable	3,045	2,615
Total current liabilities	57,771	47,638
Long-term debt	24,406	28,932
Postretirement benefits reserves	21,132	20,680
Deferred income tax liabilities	26,893	34,041
Long-term obligations to equity companies	4,774	5,124
Other long-term obligations	19,215	20,069
Total liabilities	154,191	156,484
Commitments and contingencies
Equity
Common stock without par value (9,000 million shares authorized, 8,019 million shares issued)	14,656	12,157
Earnings reinvested	414,540	407,831
Accumulated other comprehensive income	(16,262)	(22,239)
Common stock held in treasury (3,780 million shares in 2017 and 3,871 million shares in 2016)	(225,246)	(230,424)
ExxonMobil share of equity	187,688	167,325
Noncontrolling interests	6,812	6,505
Total equity	194,500	173,830
Total liabilities and equity	$ 348,691	$ 330,314

XML

Consolidated Balance Sheet (Parenthetical) - $ / shares shares in Millions	Dec. 31, 2017	Dec. 31, 2016
Consolidated Balance Sheet [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	3,780	3,871

XML

Consolidated Statement Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities
Net income including noncontrolling interests	$ 19,848	$ 8,375	$ 16,551
Adjustments for noncash transactions
Depreciation and depletion	19,893	22,308	18,048
Deferred income tax charges/(credits)	(8,577)	(4,386)	(1,832)
Postretirement benefits expense in excess of/(less than) net payments	1,135	(329)	2,153
Other long-term obligation provisions in excess of/(less than) payments	(610)	(19)	(380)
Dividends received greater than/(less than) equity in current earnings of equity companies	131	(579)	(691)
Changes in operational working capital, excluding cash and debt
Reduction/(increase) - Notes and accounts receivable	(3,954)	(2,090)	4,692
Reduction/(increase) - Inventories	(1,682)	(388)	(379)
Reduction/(increase) - Other current assets	(117)	171	45
Increase/(reduction) - Accounts and other payables	5,104	915	(7,471)
Net (gain) on asset sales	(334)	(1,682)	(226)
All other items - net	(771)	(214)	(166)
Net cash provided by operating activities	30,066	22,082	30,344
Cash flows from investing activities
Additions to property, plant and equipment	(15,402)	(16,163)	(26,490)
Proceeds associated with sales of subsidiaries, property, plant and equipment, and sales and returns of investments	3,103	4,275	2,389
Decrease/(increase) in restricted cash and cash equivalents			42
Additional investments and advances	(5,507)	(1,417)	(607)
Other investing activities including collection of advances	2,076	902	842
Net cash used in investing activities	(15,730)	(12,403)	(23,824)
Cash flows from financing activities
Additions to long-term debt	60	12,066	8,028
Reductions in long-term debt			(26)
Additions to short-term debt	1,735
Reductions in short-term debt	(5,024)	(314)	(506)
Additions/(reductions) in commercial paper, and debt with three months or less maturity	2,181	(7,459)	1,759
Cash dividends to ExxonMobil shareholders	(13,001)	(12,453)	(12,090)
Cash dividends to noncontrolling interests	(184)	(162)	(170)
Changes in noncontrolling interests	(150)
Tax benefits related to stock-based awards			2
Common stock acquired	(747)	(977)	(4,039)
Common stock sold		6	5
Net cash used in financing activities	(15,130)	(9,293)	(7,037)
Effects of exchange rate changes on cash	314	(434)	(394)
Increase/(decrease) in cash and cash equivalents	(480)	(48)	(911)
Cash and cash equivalents at beginning of year	3,657	3,705	4,616
Cash and cash equivalents at end of year	$ 3,177	$ 3,657	$ 3,705

XML

Consolidated Statement Of Changes In Equity - USD ($) shares in Millions, $ in Millions	Total	ExxonMobil Share Of Common Stock [Member]	ExxonMobil Share Of Earnings Reinvested [Member]	ExxonMobil Share Of Accumulated Other Comprehensive Income [Member]	ExxonMobil Share Of Common Stock Held In Treasury [Member]	ExxonMobil Share Of Equity [Member]	Noncontrolling Interests [Member]
Balance at Dec. 31, 2014	$ 181,064	$ 10,792	$ 408,384	$ (18,957)	$ (225,820)	$ 174,399	$ 6,665
Balance (in shares) - issued at Dec. 31, 2014	8,019
Balance (in shares) - in treasury at Dec. 31, 2014	(3,818)
Balance (in shares) - outstanding at Dec. 31, 2014	4,201
Amortization of stock-based awards	$ 828	828				828
Tax benefits related to stock-based awards	116	116				116
Other	(124)	(124)				(124)
Net income for the year	16,551		16,150			16,150	401
Dividends - common shares (company)			(12,090)			(12,090)
Dividends - common shares (NCI)							(170)
Dividends - common shares (total)	(12,260)
Other comprehensive income	(5,451)			(4,554)		(4,554)	(897)
Acquisitions, at cost (company)					(4,039)	(4,039)
Acquisitions, at cost (total)	(4,039)
Dispositions	$ 125				125	125
Acquisitions (in shares)	(48)
Dispositions (in shares)	3
Balance at Dec. 31, 2015	$ 176,810	11,612	412,444	(23,511)	(229,734)	170,811	5,999
Balance (in shares) - issued at Dec. 31, 2015	8,019
Balance (in shares) - in treasury at Dec. 31, 2015	(3,863)
Balance (in shares) - outstanding at Dec. 31, 2015	4,156
Amortization of stock-based awards	$ 796	796				796
Tax benefits related to stock-based awards	30	30				30
Other	(281)	(281)				(281)
Net income for the year	8,375		7,840			7,840	535
Dividends - common shares (company)			(12,453)			(12,453)
Dividends - common shares (NCI)							(162)
Dividends - common shares (total)	(12,615)
Other comprehensive income	1,405			1,272		1,272	133
Acquisitions, at cost (company)					(977)	(977)
Acquisitions, at cost (total)	(977)
Dispositions	$ 287				287	287
Acquisitions (in shares)	(12)
Dispositions (in shares)	4
Balance at Dec. 31, 2016	$ 173,830	12,157	407,831	(22,239)	(230,424)	167,325	6,505
Balance (in shares) - issued at Dec. 31, 2016	8,019
Balance (in shares) - in treasury at Dec. 31, 2016	(3,871)
Balance (in shares) - outstanding at Dec. 31, 2016	4,148
Amortization of stock-based awards	$ 801	801				801
Other	(432)	(380)				(380)	(52)
Net income for the year	19,848		19,710			19,710	138
Dividends - common shares (company)			(13,001)			(13,001)
Dividends - common shares (NCI)							(184)
Dividends - common shares (total)	(13,185)
Other comprehensive income	6,532			5,977		5,977	555
Acquisitions, at cost (company)					(828)	(828)
Acquisitions, at cost (NCI)							(150)
Acquisitions, at cost (total)	(978)
Issued for acquisitions	7,789	2,078			5,711	7,789
Dispositions	$ 295				295	295
Acquisitions (in shares)	(10)
Issued for acquisitions (in shares)	96
Dispositions (in shares)	5
Balance at Dec. 31, 2017	$ 194,500	$ 14,656	$ 414,540	$ (16,262)	$ (225,246)	$ 187,688	$ 6,812
Balance (in shares) - issued at Dec. 31, 2017	8,019
Balance (in shares) - in treasury at Dec. 31, 2017	(3,780)
Balance (in shares) - outstanding at Dec. 31, 2017	4,239

XML

Summary Of Accounting Policies

12 Months Ended

Dec. 31, 2017

Summary Of Accounting Policies [Abstract]

Summary Of Accounting Policies

1. Summary of Accounting Policies

Principles of Consolidation

The Consolidated Financial Statements include the accounts of subsidiaries the Corporation controls. 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”. The Corporation’s share of the net income of these companies is included in the Consolidated Statement of Income caption “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.

Evidence of loss in value that might indicate impairment of investments in companies accounted for on the equity method is assessed to determine if such evidence represents a loss in value of the Corporation’s investment that is other than temporary. 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 evidence of an other than temporary loss in fair value below carrying amount is determined, an impairment is recognized. 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.

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. Revenues are recognized when the products are delivered, which occurs when the customer has taken title and has assumed the risks and rewards of ownership, prices are fixed or determinable and collectibility is reasonably assured.

Revenues from the production of natural gas properties in which the Corporation has an interest with other producers are recognized on the basis of the Corporation’s net working interest. Differences between actual production and net working interest volumes are not significant.

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.

Taxes on Sales Transactions

Beginning in 2017, the Corporation revised its reporting of certain sales and value-added taxes imposed on and concurrent with revenue-producing transactions with customers and collected on behalf of governmental authorities (sales-based taxes). This changes reporting of sales-based taxes from gross reporting (included in both “Sales and other operating revenue” and “Sales-based taxes”) to net reporting (excluded from both “Sales and other operating revenue” and “Sales-based taxes”) in the Consolidated Statement of Income. This change in reporting was applied retrospectively and does not affect earnings. Similar taxes,for which the Corporation is not considered to be an agent for the government, continue to be reported on a gross basis.

Derivative Instruments

The Corporation has the ability to use derivative instruments to offset exposures associated with commodity prices, foreign currency exchange ratesand interest rates that arise from existing assets, liabilities and forecasted transactions. The gains and losses resulting from changes in the fair value of derivatives are recorded in income.

The Corporation may designate derivatives as fair value hedges or cash flow hedges. For fair value hedges,the gain or loss on the derivative and the offsetting loss or gain on the hedged item are recognized in current earnings.For cash flow hedges, the effective part of the hedge is initially reported as a component of other comprehensive income and subsequently reclassified into earnings in the period that the forecasted transaction affects earnings, and the ineffective part of the hedge is recognized immediately in 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.

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 gas reserves. 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 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 producesuch 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 generally are 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 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.

Asset valuation analyses performed as part of its asset management program and other profitability reviews assist the Corporation in assessing whether events or circumstances indicate the carrying amounts of any of its assets may not be recoverable.

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 and levels of prosperity. Because the lifespans of the vast majority of the Corporation’s major assets are measured in decades, the value of these assets is predominantly based on long-term views of future commodity prices and production costs. During the lifespan of these major assets, the Corporation expects that oil and gas prices will experience significant volatility, and consequently these assets will experience periods of higher earnings and periods of lower earnings, or even losses. In assessing whether the 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. While near-term prices are subject to wide fluctuations, longer-term price views are more stable and meaningful for purposes of assessing future cash flows.

When the industry experiences a prolonged and deep reduction in commodity prices, the market supply and demand conditions may result in changes to the Corporation’s long-term price or margin assumptions it uses for its capital investment decisions. To the extent those changes result in a significant reduction to its long-term oil price, natural gas price or margin ranges, the Corporation may consider that situation, in conjunction with other events and changes in circumstances such as a history of operating losses, an indicator of potential impairment for certain assets.

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. These prices represent discrete points in time and could be higher or lower than the Corporation’s long-term 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.

If events or 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 Corporation’s assumptions which are developed in the annual planning and budgeting process, 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, refining and chemical margins, volumes, costs, and foreign currency exchange rates. Volumes are based on projected field and facility production profiles, throughput, or sales. Where unproved reserves exist, an appropriately risk-adjusted amount of these reserves may be included in the evaluation. Cash flow estimates for impairment testing exclude the effects of derivative instruments.

An asset group is impaired if its estimated undiscounted cash flows are less than the asset’s carrying value. Impairments are measured by the amount by which the carrying value exceeds fair value. Fair value is based on market prices if an active market exists for the asset group, or discounted cash flows using a discount rate commensurate with the risk. Significant unproved properties are assessed for impairment individually, and valuation allowances against the capitalized costs are recorded based on 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.

Other. 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. Losses on properties sold are recognized when incurred or when the properties are held for sale and the fair value of the properties is less than the carrying value.

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.

Asset Retirement Obligations and Environmental Liabilities

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. The costs associated with these liabilities are capitalized as part of the related assets and depreciated. Over time, the liabilities are accreted for the change in their present value.

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.

Downstream and Chemical operations primarily use the local currency. However, the U.S. dollar is used in countries with a history of high inflation (primarily in Latin America) and 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 Canada, the United Kingdom, Norway and continental 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.

Stock-Based Payments

The Corporation awards stock-based compensation to employees in the form of restricted stock and restricted stock units. Compensation expense is measured by the price of the stock at the date of grant and is recognized in income over the requisite service period.

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Accounting Changes

12 Months Ended

Dec. 31, 2017

New Accounting Pronouncements And Changes In Accounting Principles [Abstract]

Accounting Changes [Text Block]

2. Accounting Changes

Effective December 31, 2017, the Corporation revised its accounting policy election related to the reporting of certain sales and value-added taxes imposed on and concurrent with revenue-producing transactions with customers and collected on behalf of governmental authorities (sales-based taxes). This changes reporting of sales-based taxes from gross reporting (included in both “Sales and other operating revenue” and “Sales-based taxes”) to the preferable method of net reporting (excluded from both “Sales and other operating revenue” and “Sales-based taxes”) in the Consolidated Statement of Income. The revised election makes reported revenue more consistent with ExxonMobil’s role as an agent for the government and is more consistent with the reporting practices of other international major oil and gas companies and the largest U.S. companies. This change in accounting principle was applied retrospectively and does not affect net income attributable to ExxonMobil.

Also effective December 31, 2017, the Corporation reclassified U.S. Federal excise tax from “Sales-based taxes” to “Other taxes and duties”. For these taxes ExxonMobil is not considered to be an agent for the government and these taxes will continue to be reported gross. The amount reclassified was $3,110 million in 2016 and $3,044 million in 2015. This change in classification was applied retrospectively and does not affect net income attributable to ExxonMobil.

	2016			2015
	As Reported	Change	As Adjusted	As Reported	Change	As Adjusted
	(millions of dollars)
Sales and other operating revenue	218,608	(17,980)	200,628	259,488	(19,634)	239,854
Sales-based taxes	21,090	(21,090)	-	22,678	(22,678)	-
Other taxes and duties	25,910	3,110	29,020	27,265	3,044	30,309

Effective January 1, 2018, ExxonMobil adopted the Financial Accounting Standards Board’s standard, Revenue from Contracts with Customers, as amended. The standard establishes a single revenue recognition model for all contracts with customers, eliminates industry and transaction specific requirements, and expands disclosure requirements. The standard was adopted using the Modified Retrospective method, under which prior year results are not restated, but supplemental information on the impact of the new standard must be provided for 2018 results, if material. The standard is not expected to have a material impact on the Corporation’s financial statements. The cumulative effect of adoption of the new standard is de minimis.

Effective January 1, 2018, ExxonMobil adoptedthe Financial Accounting Standards Board’s Update,Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. The standard requires investments in equitysecurities other than consolidated subsidiaries and equity method investments to be measured at fair value with changes in the fairvalue recognized through net income. Companies can elect a modified approach for equity securities that do not have a readily determinable fair value. The standard is not expected to have a material impact on the Corporation’s financial statements.

Effective January 1, 2018, ExxonMobil adoptedthe Financial Accounting Standards Board’s Update, Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The update requires the service cost component of net benefit costs to be reported in the same line of the income statement as other compensation costs and the other components of net benefit costs (non-service costs) to be presented separately from the service cost component. Additionally, only the service cost component of net benefit costs is eligible for capitalization. The Corporation expects to add a new line “Non-service pension and postretirement benefit expense” to its Consolidated Statement of Income and expects to include all of these costs in its Corporate and financing segment. This line would reflect the non-service costs that were previously included in “Production and manufacturing expenses” and “Selling, general and administrative expenses”. The update is not expected to have a material impact on the Corporation’s financial statements.

Effective January 1, 2019, ExxonMobil will adopt the Financial Accounting Standards Board’s standard, Leases. The standard requires all leases with an initial term greater than one year be recorded on the balance sheet as an asset and a lease liability. The Corporation is gathering and evaluating data and recently acquired asystem to facilitate implementation. We are progressing an assessment of the magnitude of the effect on the Corporation’s financial statements.

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Miscellaneous Financial Information

12 Months Ended

Dec. 31, 2017

Miscellaneous Financial Information [Abstract]

Miscellaneous Financial Information

3. Miscellaneous Financial Information

Research and development expenses totaled $1,063 million in 2017,$1,058 million in 2016, and $1,008 million in 2015.

Net income included before-tax aggregate foreign exchange transaction gains of $6 million in 2017 and $29 million in 2016, and a loss of $119 million in 2015.

In 2017, 2016, and 2015, net income included losses of $10 million, $295 million, and $186 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 $10.8 billion and $8.1 billion atDecember 31, 2017, and 2016, respectively.

Crude oil, products and merchandise as of year-end 2017 and 2016 consist of the following:

		2017	2016
		(billions of dollars)
Crude oil		4.6	3.9
Petroleum products		4.3	3.7
Chemical products		3.3	2.8
Gas/other		0.7	0.5
	Total	12.9	10.9

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Other Comprehensive Income Information

12 Months Ended

Dec. 31, 2017

Other Comprehensive Income Information [Abstract]

Other Comprehensive Income Information

4.Other Comprehensive Income Information

		Cumulative	Post-
		Foreign	retirement	Unrealized
		Exchange	Benefits	Change in
ExxonMobil Share of Accumulated Other		Translation	Reserves	Stock
Comprehensive Income		Adjustment	Adjustment	Investments	Total
		(millions of dollars)
Balance as of December 31, 2014		(5,952)	(12,945)	(60)	(18,957)
Current period change excluding amounts reclassified
	from accumulated other comprehensive income	(8,204)	2,202	33	(5,969)
Amounts reclassified from accumulated other
	comprehensive income	(14)	1,402	27	1,415
Total change in accumulated other comprehensive income		(8,218)	3,604	60	(4,554)
Balance as of December 31, 2015		(14,170)	(9,341)	-	(23,511)
Current period change excluding amounts reclassified
	from accumulated other comprehensive income	(331)	552	-	221
Amounts reclassified from accumulated other
	comprehensive income	-	1,051	-	1,051
Total change in accumulated other comprehensive income		(331)	1,603	-	1,272
Balance as of December 31, 2016		(14,501)	(7,738)	-	(22,239)
Current period change excluding amounts reclassified
	from accumulated other comprehensive income	4,879	(170)	-	4,709
Amounts reclassified from accumulated other
	comprehensive income	140	1,128	-	1,268
Total change in accumulated other comprehensive income		5,019	958	-	5,977
Balance as of December 31, 2017		(9,482)	(6,780)	-	(16,262)

Amounts Reclassified Out of Accumulated Other
Comprehensive Income - Before-tax Income/(Expense)		2017	2016	2015
		(millions of dollars)
Foreign exchange translation gain/(loss) included in net income
	(Statement of Income line: Other income)	(234)	-	14
Amortization and settlement of postretirement benefits reserves
	adjustment included in net periodic benefit costs(1)	(1,656)	(1,531)	(2,066)
Realized change in fair value of stock investments included in net income
	(Statement of Income line: Other income)	-	-	(42)

(1)These accumulated other comprehensive income components are included in the computation of net periodic pension cost. (See Note 17 – Pension and Other Postretirement Benefits for additional details.)

Income Tax (Expense)/Credit For
Components of Other Comprehensive Income		2017	2016	2015
		(millions of dollars)
Foreign exchange translation adjustment		67	43	170
Postretirement benefits reserves adjustment (excluding amortization)		201	(247)	(1,192)
Amortization and settlement of postretirement benefits reserves
	adjustment included in net periodic benefit costs	(491)	(445)	(618)
Unrealized change in fair value of stock investments		-	-	(17)
Realized change in fair value of stock investments included in net income		-	-	(15)
Total		(223)	(649)	(1,672)

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Cash Flow Information

12 Months Ended

Dec. 31, 2017

Cash Flow Information [Abstract]

Cash Flow Information

5. 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.

For 2017, the “Net (gain) on asset sales” on the Consolidated Statement of Cash Flows includes before-tax amounts from the sale of service stations in multiple countries, Upstream asset transactions in the U.S., and the sale of ExxonMobil’s operated Upstream business in Norway. For 2016, the number includes before-tax amounts from the sale of service stations in Canada, the sale of Upstream properties in the U.S., and the sale of aviation fueling operations across multiple countries. For 2015, the number includes before-tax amounts from the sale of service stations in Europe, the sale of Upstream properties in the U.S., the sale of ExxonMobil’s interests in Chemical and Refining joint ventures, and the sale of the Torrance refinery. These net gains are reported in “Other income” on the Consolidated Statement of Income.

In 2017, the “Additions/(reductions) in commercial paper, and debt with three months or less maturity” on the Consolidated Statement of Cash Flows includes a net $121 millionrepayment of commercial paper with maturity over three months. The gross amount issued was $3.6 billion, while the gross amount repaid was $3.7 billion. In 2016, the number includes a net $608 million addition of commercial paper with maturity over three months. The gross amount issued was $3.9 billion, while the gross amount repaid was $3.3 billion. In 2015, the number includes a net $358 million addition of commercial paper with maturity over three months. The gross amount issued was $8.1 billion, while the gross amount repaid was $7.7 billion.

In 2017, the Corporation completed the acquisitions of InterOil Corporation and of companies that own certain oil and gas properties in the Permian basin and other assets. These transactions included a significant noncash component. Additional information is provided in Note 20.

In 2015, ExxonMobil completed an asset exchange that resulted in value received of approximately $500 million including $100 million in cash. The noncash portion was not included in the “Sales of subsidiaries, investments, and property, plant and equipment” or the “All other items-net” lines on the Statement of Cash Flows. Capital leases of approximately $1 billion were not included in the “Additions to long-term debt” or “Additions to property, plant and equipment” lines on the Statement of Cash Flows.

	2017	2016	2015
	(millions of dollars)
Cash payments for interest	1,132	818	586
Cash payments for income taxes	7,510	4,214	7,269

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Additional Working Capital Information

12 Months Ended

Dec. 31, 2017

Additional Working Capital Information [Abstract]

Additional Working Capital Information

6. Additional Working Capital Information

			Dec. 31	Dec. 31
			2017	2016
			(millions of dollars)
Notes and accounts receivable
	Trade, less reserves of $72 million and $75 million		21,274	16,033
	Other, less reserves of $539 million and $627 million		4,323	5,361
		Total	25,597	21,394
Notes and loans payable
	Bank loans		115	143
	Commercial paper		13,049	10,727
	Long-term debt due within one year		4,766	2,960
		Total	17,930	13,830
Accounts payable and accrued liabilities
	Trade payables		21,701	17,801
	Payables to equity companies		5,453	4,748
	Accrued taxes other than income taxes		3,311	2,653
	Other		6,331	5,991
		Total	36,796	31,193

The Corporation has short-term committed lines of credit of $5.4 billion which were unused as of December 31, 2017. These lines are available for general corporate purposes.

The weighted-average interest rate on short-term borrowings outstanding was1.3percent and 0.6 percent at December31,2017, and 2016, respectively.

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Equity Company Information

12 Months Ended

Dec. 31, 2017

Equity Company Information [Abstract]

Equity Company Information

7.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, and natural gas marketing in North America; natural gas exploration, production and distribution in Europe; and exploration, production, liquefied natural gas (LNG) operations, refining operations, petrochemical manufacturing, and fuel sales in Asiaand the Middle East. Also included are several refining, petrochemical manufacturing and marketing ventures.

The share of total equity company revenues from sales to ExxonMobil consolidated companies was 15 percent, 14 percent and 15 percent in the years 2017, 2016 and 2015, 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.

In 2013 and 2014, the Corporation and Rosneft established various entities to conduct exploration and research activities. In 2014, the European Union and United States imposed sanctions relating to the Russian energy sector. In the latter half of 2017, the United States codified and expanded sanctions against Russia. With respect to the foregoing, the Corporation and its affiliates continue to comply with all applicable laws, rules and regulations. In late 2017, the Corporation decided to withdraw from these joint ventures. The Corporation expects it will formally initiate the withdrawal in 2018. The decision to withdraw resulted in an after-tax loss of $0.2 billion.

In 2017, the Corporation invested about $3 billion to acquire shares in four joint venture companies, resulting in a 25 percent indirect interest in the natural gas-rich Area 4 block offshore Mozambique. The transaction was completed on December 13, 2017. The investments are accounted for using the equity method of accounting.

		2017			2016			2015
Equity Company			ExxonMobil			ExxonMobil			ExxonMobil
Financial Summary		Total		Share	Total		Share	Total		Share
		(millions of dollars)
Total revenues		94,791		29,340	80,247		24,668	111,866		34,297
Income before income taxes		29,748		8,498	22,269		6,509	36,379		10,670
Income taxes		8,421		2,236	6,334		1,701	11,048		3,019
	Income from equity affiliates	21,327		6,262	15,935		4,808	25,331		7,651
Current assets		35,367		12,050	34,412		11,392	32,879		11,244
Long-term assets		122,221		34,931	109,646		32,357	109,684		32,878
	Total assets	157,588		46,981	144,058		43,749	142,563		44,122
Current liabilities		21,725		6,348	20,507		5,765	22,947		6,738
Long-term liabilities		59,736		17,056	62,110		17,288	60,388		17,165
	Net assets	76,127		23,577	61,441		20,696	59,228		20,219

A list of significant equity companies as of December 31, 2017, together with the Corporation’s percentage ownership interest, is detailed below:

	Percentage
	Ownership
	Interest
Upstream
Aera Energy LLC	48
Barzan Gas Company Limited	7
BEB Erdgas und Erdoel GmbH & Co. KG	50
Cameroon Oil Transportation Company S.A.	41
Cross Timbers Energy, LLC	50
Golden Pass LNG Terminal LLC	18
Marine Well Containment Company LLC	10
Mozambique Rovuma Venture, S.p.A.	36
Nederlandse Aardolie Maatschappij B.V.	50
Qatar Liquefied Gas Company Limited (2)	24
Ras Laffan Liquefied Natural Gas Company Limited	25
Ras Laffan Liquefied Natural Gas Company Limited (II)	31
Ras Laffan Liquefied Natural Gas Company Limited (3)	30
South Hook LNG Terminal Company Limited	24
Tengizchevroil, LLP	25
Terminale GNL Adriatico S.r.l.	71
Downstream
Fujian Refining & Petrochemical Co. Ltd.	25
Permian Express Partners LLC	12
Saudi Aramco Mobil Refinery Company Ltd.	50
Chemical
Al-Jubail Petrochemical Company	50
Infineum Italia s.r.l.	50
Infineum Singapore Pte. Ltd.	50
Infineum USA L.P.	50
Saudi Yanbu Petrochemical Co.	50

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Investments, Advances And Long-Term Receivables

12 Months Ended

Dec. 31, 2017

Investments, Advances And Long-Term Receivables [Abstract]

Investments, Advances And Long-Term Receivables

8. Investments, Advances and Long-Term Receivables

			Dec. 31,	Dec. 31,
			2017	2016
			(millions of dollars)
Companies carried at equity in underlying assets
	Investments		24,354	20,810
	Advances		9,112	9,443
		Total equity company investments and advances	33,466	30,253
Companies carried at cost or less and stock investments carried at fair value			174	154
Long-term receivables and miscellaneous investments at cost or less, net of reserves
	of $5,432 million and $4,141 million		5,520	4,695
		Total	39,160	35,102

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Property, Plant And Equipment And Asset Retirement Obligations

12 Months Ended

Dec. 31, 2017

Property, Plant And Equipment And Asset Retirement Obligations [Abstract]

Property, Plant And Equipment And Asset Retirement Obligations

9. Property, Plant and Equipment and Asset Retirement Obligations

		December 31, 2017		December 31, 2016
Property, Plant and Equipment		Cost	Net	Cost	Net
		(millions of dollars)
Upstream		371,904	200,291	355,265	195,904
Downstream		50,343	21,732	47,915	20,588
Chemical		37,966	20,117	34,098	17,401
Other		16,972	10,490	16,637	10,331
	Total	477,185	252,630	453,915	244,224

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 relies in part on the Corporation’s planning and budgeting cycle. As part of its 2017 annual planning and budgeting cycle, the Corporation identified emerging trends such as increasing estimates of available natural gas supplies and ongoing reductions in the industry’s costs of supply for natural gas that resulted in a reduction to the Corporation’s long-term natural gas price outlooks. Based in part on these trends, the Corporation concluded that events and circumstances indicated that the carrying value of certain long-lived assets, notably North America natural gas assets and certain other assets across the remainder of its Upstream operations, may not be recoverable. Accordingly, an impairment assessment was performed which indicated that the vast majority of asset groups assessed have future undiscounted cash flow estimates that exceed their carrying values. However, the carrying values for certain asset groups in the United States exceeded the estimated cash flows. As a result, the Corporation’s fourth quarter 2017 results include a before-tax charge of $0.8 billion to reduce the carrying value of those assets to fair value. The asset groups subject to this impairment charge are primarily dry gas operations with little additional development potential. In addition, the Corporation made a decision to cease development planning activities and further allocation of capital to certain non-producing assets outside the United States resulting in a before-tax charge of $0.9 billion to reduce the carrying value of those assets that are included in Property, Plant and Equipment. Other impairments during the year resulted in a before-tax charge of $0.3 billion.The impairment charges are recognized primarily in the line “Depreciation and depletion” on the Consolidated Statement of Income.

The assessment of fair values required the use of Level 3 inputs and assumptions that are based upon the views of a likely market participant. The principal parameters used to establish fair values included estimates of both proved and unproved reserves, future commodity prices which were consistent with the average of third-party industry experts and government agencies, drilling and development costs, discount rates ranging from 5.5 percent to 8 percent depending on the characteristics of the asset group, and comparable market transactions. Factors which could put further assets at risk of impairment in the future include reductions in the Corporation’s long-term price outlooks, changes in the allocation of capital, and operating cost increases which exceed the pace of efficiencies or the pace of oil and natural gas price increases. However, due to the inherent difficulty in predicting future commodity prices, and the relationship between industry prices and costs, it is not practicable to reasonably estimate the existence or range of any potential future impairment charges related to the Corporation’s long-lived assets.

Accumulated depreciation and depletion totaled $224,555 million at the end of 2017 and $209,691 million at the end of 2016. Interest capitalized in 2017, 2016 and 2015 was $749 million, $708 million and $482 million, respectively.

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 downstream and chemical facilities generally become firm at the time the facilities are permanently shut down and dismantled. These obligations may include the costs of asset disposal and additional soil remediation. However, these sites 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:

		2017	2016
		(millions of dollars)
Beginning balance		13,243	13,704
	Accretion expense and other provisions	780	740
	Reduction due to property sales	(906)	(134)
	Payments made	(730)	(549)
	Liabilities incurred	128	204
	Foreign currency translation	611	(513)
	Revisions	(421)	(209)
Ending balance		12,705	13,243

The long-term Asset Retirement Obligations were $11,928 million and $12,352 million at December 31, 2017, and 2016, respectively, and are included in Other long-term obligations.

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Accounting For Suspended Exploratory Well Costs

12 Months Ended

Dec. 31, 2017

Accounting For Suspended Exploratory Well Costs [Abstract]

Accounting For Suspended Exploratory Well Costs

10. 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 Corporationis 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 as well as an aging summary of those costs.

Change in capitalized suspended exploratory well costs:

			2017	2016	2015
			(millions of dollars)
Balance beginning at January 1			4,477	4,372	3,587
	Additions pending the determination of proved reserves		906	180	847
	Charged to expense		(1,205)	(111)	(5)
	Reclassifications to wells, facilities and equipment based on the
		determination of proved reserves	(497)	-	(43)
	Divestments/Other		19	36	(14)
Ending balance at December 31			3,700	4,477	4,372
Ending balance attributed to equity companies included above			306	707	696

Period end capitalized suspended exploratory well costs:

			2017	2016	2015
			(millions of dollars)
Capitalized for a period of one year or less			906	180	847
	Capitalized for a period of between one and five years		1,345	2,981	2,386
	Capitalized for a period of between five and ten years		1,064	911	826
	Capitalized for a period of greater than ten years		385	405	313
Capitalized for a period greater than one year - subtotal			2,794	4,297	3,525
		Total	3,700	4,477	4,372

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.

			2017	2016	2015
Number of projects that only have exploratory well costs capitalized for a period
	of one year or less		11	2	4
Number of projects that have exploratory well costs capitalized for a period
	of greater than one year		46	58	55
		Total	57	60	59

Of the 46 projects that have exploratory well costs capitalized for a period greater than one year as of December 31, 2017, 10projects have drilling in the preceding year or exploratory activity planned in the next two years, while the remaining 36 projects are those with completed exploratory activity progressing toward development.

The table below provides additional detail for those 36 projects, which total $1,639 million.

			Years
		Dec. 31,	Wells
Country/Project		2017	Drilled	Comment
	(millions of dollars)
Angola
- AB32 Central NE Hub		69	2006 - 2014	Evaluating development plan for tieback to existing production facilities.
- Kaombo Split Hub		20	2005 - 2006	Evaluating development plan to tie into planned production facilities.
Phase 2
- Perpetua-Zinia-Acacia		15	2008 - 2009	Oil field near Pazflor development, awaiting capacity in existing/planned
				infrastructure.
Argentina
- La Invernada		72	2014	Evaluating development plan to tie into planned infrastructure.
Australia
- East Pilchard		8	2001	Gas field near Kipper/Tuna development, awaiting capacity in existing/
				planned infrastructure.
- SE Longtom		12	2010	Gas field near Tuna development, awaiting capacity in existing/planned
				infrastructure.
- SE Remora		36	2010	Gas field near Marlin development, awaiting capacity in existing/planned
				infrastructure.
Indonesia
- Kedung Keris		11	2011	Development activity under way to tie into planned production facilities.
Iraq
- Kurdistan Pirmam		109	2015	Evaluating commercialization alternatives, while waiting for government
				approval to enter Gas Holding Period.
Kazakhstan
- Kairan		53	2004 - 2007	Evaluating commercialization and field development alternatives, while
				continuing discussions with the government regarding the development plan.
- Kalamkas		18	2006 - 2009	Evaluating development alternatives, while continuing discussions with the
				government regarding development plan.
Malaysia
- Bindu		2	1995	Awaiting capacity in existing/planned infrastructure.
Nigeria
- Bolia		15	2002 - 2006	Evaluating development plan, while continuing discussions with the
				government regarding regional hub strategy.
- Bosi		79	2002 - 2006	Development activity under way, while continuing discussions with the
				government regarding development plan.
- Bosi Central		16	2006	Development activity under way, while continuing discussions with the
				government regarding development plan.
- Erha Northeast		26	2008	Evaluating development plan for tieback to existing production facilities.
- OML 138 Ukot SW		41	2014	Evaluating development plan for tieback to existing production facilities.
- OML 138 Ukot SS		13	2015	Evaluating development plan for tieback to existing production facilities.
- Pegi		32	2009	Awaiting capacity in existing/planned infrastructure.
- Satellite Field		12	2013	Evaluating development plan to tie into planned production facilities.
Development Phase 2
- Other (3 projects)		7	2002	Evaluating and pursuing development of several additional discoveries.
Norway
- Gamma		14	2008 - 2009	Evaluating development plan for tieback to existing production facilities.
- Lavrans		16	1995 - 1999	Evaluating development plan, awaiting capacity in existing Kristin
				production facility.
- Other (7 projects)		27	2008 - 2014	Evaluating development plans, including potential for tieback to existing
				production facilities.
Papua New Guinea
- Juha		28	2007	Progressing development plans to tie into existing LNG facilities.

			Years
		Dec. 31,	Wells
Country/Project		2017	Drilled	Comment
	(millions of dollars)
Republic of Congo
- Mer Tres Profonde Sud		56	2000 - 2007	Evaluating development alternatives, while continuing discussions with the
				government regarding development plan.
Romania
- Neptun Deep		536	2012 - 2016	Continuing discussions with the government regarding development plan.
Vietnam
- Blue Whale		296	2011 - 2015	Development planning activity under way, while continuing commercial
				discussions with the government.
Total 2017 (36 projects)		1,639

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Leased Facilities

12 Months Ended

Dec. 31, 2017

Leased Facilities [Abstract]

Leased Facilities

11. Leased Facilities

At December 31, 2017, the Corporation and its consolidated subsidiaries held noncancelable operating charters and leases covering drilling equipment, tankers, service stations and other properties with minimum undiscounted lease commitments totaling $4,290million as indicated in the table. Estimated related sublease rental income from noncancelable subleases totals $36million.

	Lease Payments
	Under Minimum Commitments
		Drilling Rigs
		and Related
		Equipment	Other	Total
		(millions of dollars)
2018		169	767	936
2019		131	537	668
2020		101	397	498
2021		70	297	367
2022		41	259	300
2023 and beyond		99	1,422	1,521
Total		611	3,679	4,290

Net rental cost under both cancelable and noncancelable operating leases incurred during 2017, 2016 and 2015 were as follows:

			2017	2016	2015
			(millions of dollars)
Rental cost
	Drilling rigs and related equipment		792	1,274	1,853
	Other (net of sublease rental income)		1,826	1,817	2,076
		Total	2,618	3,091	3,929

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Earnings Per Share

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Earnings Per Share

12. Earnings Per Share

Earnings per common share	2017	2016	2015
Net income attributable to ExxonMobil(millions of dollars)	19,710	7,840	16,150
Weighted average number of common shares outstanding(millions of shares)	4,256	4,177	4,196
Earnings per common share(dollars) (1)	4.63	1.88	3.85
Dividends paid per common share (dollars)	3.06	2.98	2.88

(1)The earnings per common share and earnings per common share - assuming dilution are the same in each period shown.

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Financial Instruments And Derivatives

12 Months Ended

Dec. 31, 2017

Financial Instruments And Derivatives [Abstract]

Financial Instruments And Derivatives

13. Financial Instruments and Derivatives

Financial Instruments. The fair value of financial instruments is determined by reference to observable market data and other valuation techniques as appropriate. The only category of financial instruments where the difference between fair value and recorded book value is notable is long-term debt. The estimated fair value of total long-term debt, excluding capitalized lease obligations, was $23.7 billion and $28.0 billion at December 31, 2017, and 2016, respectively, as compared to recorded book values of $23.1 billion and $27.7 billion at December 31, 2017, and 2016, respectively.

The fair value of long-term debt by hierarchy level at December 31, 2017, is: Level 1 $23,529 million; Level 2 $170 million; and Level 3 $6 million.

Derivative Instruments. The Corporation’s size, strong capital structure, geographic diversity and the complementary nature of the Upstream, Downstream and Chemical businesses reduce the Corporation’s enterprise-wide risk from changes in interest rates, currency rates and commodity prices. In addition, the Corporation uses commodity-based contracts, including derivatives, to manage commodity price risk and for trading purposes.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 believes that there are no material market or credit risks to the Corporation’s financial position, results of operations or liquidity as a result of the derivatives. The Corporation maintains a system of controls that includes the authorization, reporting and monitoring of derivative activity.

The estimated fair value of derivative instruments outstanding and recorded on the balance sheet was a net liability of $38 million at year-end 2017 and a net liability of $22 million at year-end 2016. Assets and liabilities associated with derivatives are usually recorded either in “Other current assets” or “Accounts payable and accrued liabilities”.

The Corporation’s fair value measurement of its derivative instruments use either Level 1 or Level 2 inputs.

The Corporation recognized a before-tax gain or (loss) related to derivative instruments of $(99)million, $(81) million and $39 million during 2017, 2016 and 2015, respectively. Income statement effects associated with derivatives are usually recorded either in “Sales and other operating revenue” or “Crude oil and product purchases”.

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Long-Term Debt

12 Months Ended

Dec. 31, 2017

Long-Term Debt [Abstract]

Long-Term Debt

14. Long-Term Debt

At December 31, 2017, long-term debt consisted of $23,736 million due in U.S. dollars and $670 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 $4,766 million, which matures within one year and is included in current liabilities. The amounts of long-term debt, including capitalized lease obligations, maturing in each of the four years after December 31, 2018, in millions of dollars, are: 2019 – $4,045; 2020 – $1,617; 2021 –$2,549; and 2022 –$1,835. At December 31, 2017, the Corporation’s unused long-term credit lines were $0.2 billion.

Summarized long-term debt at year-end 2017 and 2016 are shown in the table below:

			Average
			Rate (1)	2017	2016
				(millions of dollars)
Exxon Mobil Corporation
	1.305% notes due 2018			-	1,600
	1.439% notes due 2018			-	1,000
	Floating-rate notes due 2018 (Issued 2016)			-	750
	Floating-rate notes due 2018 (Issued 2015)			-	500
	1.819% notes due 2019			1,750	1,750
	1.708% notes due 2019			1,250	1,250
	Floating-rate notes due 2019 (Issued 2014)		1.345%	500	500
	Floating-rate notes due 2019 (Issued 2016)		1.953%	250	250
	1.912% notes due 2020			1,500	1,500
	2.222% notes due 2021			2,500	2,500
	2.397% notes due 2022			1,150	1,150
	Floating-rate notes due 2022		1.557%	500	500
	2.726% notes due 2023			1,250	1,250
	3.176% notes due 2024			1,000	1,000
	2.709% notes due 2025			1,750	1,750
	3.043% notes due 2026			2,500	2,500
	3.567% notes due 2045			1,000	1,000
	4.114% notes due 2046			2,500	2,500
XTO Energy Inc.(2)
	5.500% senior notes due 2018			-	371
	6.500% senior notes due 2018			-	453
	6.100% senior notes due 2036			195	197
	6.750% senior notes due 2037			302	304
	6.375% senior notes due 2038			232	233
Mobil Corporation
	8.625% debentures due 2021			250	249
Industrial revenue bonds due 2019-2051			0.764%	2,559	2,559
Other U.S. dollar obligations				162	103
Other foreign currency obligations				34	57
Capitalized lease obligations			8.504%	1,327	1,225
Debt issuance costs				(55)	(69)
		Total long-term debt		24,406	28,932

(1)Average effective interest rate for debt and average imputed interest rate for capital leases at December 31, 2017.

(2) Includes premiums of $102 million in 2017 and $138 million in 2016.

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Incentive Program

12 Months Ended

Dec. 31, 2017

Incentive Program [Abstract]

Incentive Program

15. Incentive Program

The 2003 Incentive Program provides for grants of stock options, stock appreciation rights (SARs), restricted stock and other forms of award. 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 2017, remaining shares available for award under the 2003 Incentive Program were 89million.

Restricted Stock and Restricted Stock Units. Awards totaling 8,916 thousand, 9,583 thousand,and 9,681 thousandof restricted (nonvested) common stock units were granted in 2017, 2016 and 2015, 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 sharesand units in each award vesting after three years and the remaining 50 percent vesting after seven 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 or retirement, whichever occurs later, for the remaining 50 percent of the award.

The Corporation has purchased shares in the open market and through negotiated transactions to offset shares or units settled in shares issued in conjunction with benefit plans and programs. Purchases may be discontinued at any time without prior notice.

The following tables summarize information about restricted stock and restricted stock units for the year ended December 31, 2017.

	2017
		Weighted Average
		Grant-Date
Restricted stock and units outstanding	Shares	Fair Value per Share
	(thousands)	(dollars)
Issued and outstanding at January 1	43,833		84.43
2016 award issued in 2017	9,582		87.70
Vested	(10,136)		80.71
Forfeited	(2,201)		80.11
Issued and outstanding at December 31	41,078		86.34

Value of restricted stock and units	2017	2016	2015
Grant price (dollars)	81.89	87.70	81.27
Value at date of grant:	(millions of dollars)
Restricted stock and units settled in stock	667	771	727
Units settled in cash	63	69	60
Total value	730	840	787

As of December 31, 2017, there was $2,049million of unrecognized compensation cost related to the nonvested restricted awards. This costis expected to be recognized over a weighted-average period of 4.5 years. The compensation cost charged against income for the restricted stock and restricted stock units was $856 million, $880 millionand $855 million for 2017, 2016 and 2015, respectively. The income taxbenefit recognized in income related to this compensation expensewas $78million, $80million and $78 million for the same periods, respectively. The fair value of shares and units vested in 2017,2016 and 2015 was $826 million, $851 million and $808 million, respectively. Cash payments of $64 million, $67 million and $64 millionfor vested restricted stock units settled in cash were made in 2017, 2016 and 2015, respectively.

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Litigation And Other Contingencies

12 Months Ended

Dec. 31, 2017

Litigation And Other Contingencies [Abstract]

Litigation And Other Contingencies

16. 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. ExxonMobil will continue to defend itself vigorously in these matters. Based on a consideration of all relevant facts and circumstances, the Corporation does not believe the ultimate outcome of any currently pending lawsuit against ExxonMobil will have a material adverse effect upon the Corporation’s operations, financial condition, or financial statements taken as a whole.

Other Contingencies. The Corporation and certain of its consolidated subsidiaries were contingently liable at December31,2017, for guarantees relating to notes, loans and performance under contracts. Where guarantees for environmental remediation and other similar mattersdo not include a stated cap, the amounts reflect management’s estimate of the maximum potential exposure.

					December 31, 2017
			Equity Company		Other Third-Party
			Obligations (1)		Obligations		Total
					(millions of dollars)
Guarantees
	Debt-related			98		270	368
	Other			1,191		4,514	5,705
		Total		1,289		4,784	6,073
(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.

In accordance with a nationalization decree issued by Venezuela’s president in February 2007, by May1,2007, a subsidiary of the Venezuelan National Oil Company (PdVSA) assumed the operatorship of the Cerro Negro Heavy Oil Project. This Project had been operated and owned by ExxonMobil affiliates holding a 41.67 percent ownership interest in the Project. The decree also required conversion of the Cerro Negro Project into a “mixed enterprise” and an increase in PdVSA’s or one of its affiliate’s ownership interest in the Project, with the stipulation that if ExxonMobil refused to accept the terms for the formation of the mixed enterprise within a specified period of time, the government would “directly assume the activities” carried out by the joint venture. ExxonMobil refused to accede to the terms proffered by the government, and on June 27, 2007, the government expropriated ExxonMobil’s 41.67 percent interest in the Cerro Negro Project.

On September6,2007, affiliates of ExxonMobil filed a Request for Arbitration with the International Centre for Settlement of Investment Disputes (ICSID). The ICSID Tribunal issued a decision on June10,2010, finding that it had jurisdiction to proceed on the basis of the Netherlands-Venezuela Bilateral Investment Treaty. On October9,2014, the ICSID Tribunal issued its final award finding in favor of the ExxonMobil affiliates and awarding $1.6 billion as of the date of expropriation, June27,2007, and interest from that date at 3.25 percent compounded annually until the date of payment in full. The Tribunal also noted that one of the Cerro Negro Project agreements provides a mechanism to prevent double recovery between the ICSID award and all or part of an earlier award of $908 million to an ExxonMobil affiliate, Mobil Cerro Negro, Ltd., against PdVSA and a PdVSA affiliate, PdVSA CN, in an arbitration under the rules of the International Chamber of Commerce.

On February2,2015, Venezuela filed a Request for Annulment of the ICSID award. On March9,2017, the ICSID Committee hearing the Request for Annulment issued a decision partially annulling the award of the Tribunal issued on October9,2014. The Committee affirmed the compensation due for the La Ceiba project and for export curtailments at the Cerro Negro project, but annulled the portion of the award relating to the Cerro Negro Project’s expropriation ($1.4 billion) based on its determination that the prior Tribunal failed to adequately explain why the cap on damages in the indemnity owed by PdVSA did not affect or limit the amount owed for the expropriation of the Cerro Negro project. As a result, ExxonMobil retains an award for $260 million (including accrued interest). ExxonMobil reached an agreement with Venezuela for full payment of the $260 million and Venezuela has begun performing on it. The agreement does not impact ExxonMobil’s ability to re-arbitrate the issue that was the basis for the annulment in a new ICSID arbitration proceeding.

The United States District Court for the Southern District of New York entered judgment on the ICSID award on October10,2014. Motions filed by Venezuela to vacate that judgment on procedural grounds and to modify the judgment by reducing the rate of interest to be paid on the ICSID award from the entry of the court’s judgment, until the date of payment, were denied on February13,2015, and March4,2015, respectively. On March9,2015, Venezuela filed a notice of appeal of the court’s actions on the two motions. On July11,2017, the United States Court of Appeals for the Second Circuit rendered its opinion overturning the District Court’s decision and vacating the judgment on the grounds that a different procedure should have been used to reduce the award to judgment. The Corporation is evaluating next steps.

A stay of the District Court’s judgment has continued pending the completion of the Second Circuit appeal. The net impact of these matters on the Corporation’s consolidated financial results cannot be reasonably estimated. Regardless, the Corporation does not expect the resolution to have a material effect upon the Corporation’s operations or financial condition.

An affiliate of ExxonMobil is one of the Contractors under a Production Sharing Contract (PSC) with the Nigerian National Petroleum Corporation (NNPC) covering the Erha block located in the offshore waters of Nigeria. ExxonMobil's affiliate is the operator of the block and owns a 56.25 percent interest under the PSC. The Contractors are in dispute with NNPC regarding NNPC's lifting of crude oil in excess of its entitlement under the terms of the PSC. In accordance with the terms of the PSC, the Contractors initiated arbitration in Abuja, Nigeria, under the Nigerian Arbitration and Conciliation Act. On October24,2011, a three-member arbitral Tribunal issued an award upholding the Contractors' position in all material respects and awarding damages to the Contractors jointly in an amount of approximately $1.8 billion plus $234 million in accrued interest. The Contractors petitioned a Nigerian federal court for enforcement of the award, and NNPC petitioned the same court to have the award set aside. On May22,2012, the court set aside the award. The Contractors appealed that judgment to the Court of Appeal, Abuja Judicial Division. On July22,2016, the Court of Appeal upheld the decision of the lower court setting aside the award. On October21,2016, the Contractors appealed the decision to the Supreme Court of Nigeria. In June2013, the Contractors filed a lawsuit against NNPC in the Nigerian federal high court in order to preserve their ability to seek enforcement of the PSC in the courts if necessary. Following dismissal by this court, the Contractors appealed to the Nigerian Court of Appeal in June 2016. In October 2014, the Contractors filed suit in the United States District Court for the Southern District of New York to enforce, if necessary, the arbitration award against NNPC assets residing within that jurisdiction. NNPC has moved to dismiss the lawsuit. The stay in the proceedings in the Southern District of New York has been lifted. At this time, the net impact of this matter on the Corporation's consolidated financial results cannot be reasonably estimated. However, regardless of the outcome of enforcement proceedings, the Corporation does not expect the proceedings to have a material effect upon the Corporation's operations or financial condition.

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Pension And Other Postretirement Benefits

12 Months Ended

Dec. 31, 2017

Compensation And Retirement Disclosure [Abstract]

Pension And Other Postretirement Benefits

17. 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
		U.S.		Non-U.S.		Benefits
		2017	2016	2017	2016	2017	2016
		(percent)
Weighted-average assumptions used to determine
	benefit obligations at December 31
	Discount rate	3.80	4.25	2.80	3.00	3.80	4.25
	Long-term rate of compensation increase	5.75	5.75	4.30	4.00	5.75	5.75
		(millions of dollars)
Change in benefit obligation
	Benefit obligation at January 1	19,960	19,583	25,196	25,117	7,800	8,282
	Service cost	784	810	596	585	129	153
	Interest cost	798	793	772	844	317	344
	Actuarial loss/(gain)	733	250	250	1,409	231	(560)
	Benefits paid (1) (2)	(2,964)	(1,476)	(1,291)	(1,228)	(543)	(537)
	Foreign exchange rate changes	-	-	2,484	(1,520)	40	16
	Amendments, divestments and other	(1)	-	(44)	(11)	126	102
Benefit obligation at December 31		19,310	19,960	27,963	25,196	8,100	7,800
Accumulated benefit obligation at December 31		15,557	16,245	25,557	22,867	-	-

(1)Benefit payments for funded and unfunded plans.

(2)For 2017 and 2016, other postretirement benefits paid are net of $16million and $22 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 rateis 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 4.5 percent in 2019 and subsequent years. A one-percentage-point increase in thehealth care cost trend rate would increase service and interest cost by $72 million and the postretirement benefit obligation by $696 million. A one-percentage-point decrease in the health care cost trend rate would decrease service and interest cost by $53 million and the postretirement benefit obligation by $536 million.

		Pension Benefits				Other Postretirement
		U.S.		Non-U.S.		Benefits
		2017	2016	2017	2016	2017	2016
		(millions of dollars)
Change in plan assets
	Fair value at January 1	12,793	10,985	19,043	18,417	411	414
	Actual return on plan assets	1,831	949	1,442	2,443	40	20
	Foreign exchange rate changes	-	-	1,776	(1,452)	-	-
	Company contribution	619	2,068	440	492	34	36
	Benefits paid(1)	(2,461)	(1,209)	(902)	(857)	(58)	(59)
	Other	-	-	(338)	-	-	-
Fair value at December 31		12,782	12,793	21,461	19,043	427	411

(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
		U.S.		Non-U.S.
		2017	2016	2017	2016
		(millions of dollars)
Assets in excess of/(less than) benefit obligation
	Balance at December 31
	Funded plans	(3,957)	(4,306)	413	212
	Unfunded plans	(2,571)	(2,861)	(6,915)	(6,365)
Total		(6,528)	(7,167)	(6,502)	(6,153)

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
		U.S.		Non-U.S.		Benefits
		2017	2016	2017	2016	2017	2016
		(millions of dollars)
Assets in excess of/(less than) benefit obligation
	Balance at December 31 (1)	(6,528)	(7,167)	(6,502)	(6,153)	(7,673)	(7,389)
Amounts recorded in the consolidated balance
	sheet consist of:
	Other assets	-	-	1,403	1,035	-	-
	Current liabilities	(276)	(409)	(338)	(294)	(360)	(361)
	Postretirement benefits reserves	(6,252)	(6,758)	(7,567)	(6,894)	(7,313)	(7,028)
Total recorded		(6,528)	(7,167)	(6,502)	(6,153)	(7,673)	(7,389)
Amounts recorded in accumulated other
	comprehensive income consist of:
	Net actuarial loss/(gain)	3,982	5,354	5,586	5,629	1,595	1,468
	Prior service cost	11	15	(143)	(123)	(397)	(430)
Total recorded in accumulated other
	comprehensive income	3,993	5,369	5,443	5,506	1,198	1,038

(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.

									Other
			Pension Benefits						Postretirement
			U.S.			Non-U.S.			Benefits
			2017	2016	2015	2017	2016	2015	2017	2016	2015
Weighted-average assumptions used to
	determine net periodic benefit cost for
	years ended December 31	(percent)
	Discount rate		4.25	4.25	4.00	3.00	3.60	3.10	4.25	4.25	4.00
	Long-term rate of return on funded assets		6.50	6.50	7.00	5.20	5.25	5.90	6.50	6.50	7.00
	Long-term rate of compensation increase		5.75	5.75	5.75	4.00	4.80	5.30	5.75	5.75	5.75
Components of net periodic benefit cost			(millions of dollars)
	Service cost		784	810	864	596	585	689	129	153	170
	Interest cost		798	793	785	772	844	850	317	344	346
	Expected return on plan assets		(775)	(726)	(830)	(1,000)	(927)	(1,094)	(24)	(25)	(28)
	Amortization of actuarial loss/(gain)		438	492	544	476	536	730	96	153	206
	Amortization of prior service cost		5	6	6	47	54	87	(33)	(30)	(24)
	Net pension enhancement and
	curtailment/settlement cost		609	319	499	19	2	22	-	-	-
Net periodic benefit cost			1,859	1,694	1,868	910	1,094	1,284	485	595	670
Changes in amounts recorded in accumulated
	other comprehensive income:
	Net actuarial loss/(gain)		(324)	27	592	(191)	(156)	(1,375)	215	(555)	(589)
	Amortization of actuarial (loss)/gain		(1,047)	(811)	(1,043)	(495)	(538)	(752)	(96)	(153)	(206)
	Prior service cost/(credit)		-	-	-	111	32	(401)	-	-	(535)
	Amortization of prior service (cost)/credit		(5)	(6)	(6)	(47)	(54)	(87)	33	30	24
	Foreign exchange rate changes		-	-	-	559	(108)	(1,126)	8	5	(31)
Total recorded in other comprehensive income			(1,376)	(790)	(457)	(63)	(824)	(3,741)	160	(673)	(1,337)
Total recorded in net periodic benefit cost and
	other comprehensive income, before tax		483	904	1,411	847	270	(2,457)	645	(78)	(667)

Costs for defined contribution plans were $384 million, $399 millionand $405 million in 2017, 2016 and 2015, respectively.

A summary of the change in accumulated other comprehensive income is shown in the table below:

		Total Pension and
		Other Postretirement Benefits
		2017	2016	2015
		(millions of dollars)
(Charge)/credit to other comprehensive income, before tax
	U.S. pension	1,376	790	457
	Non-U.S. pension	63	824	3,741
	Other postretirement benefits	(160)	673	1,337
Total (charge)/credit to other comprehensive income, before tax		1,279	2,287	5,535
(Charge)/credit to income tax (see Note 4)		(290)	(692)	(1,810)
(Charge)/credit to investment in equity companies		(43)	(16)	81
(Charge)/credit to other comprehensive income including noncontrolling
	interests, after tax	946	1,579	3,806
Charge/(credit) to equity of noncontrolling interests		12	24	(202)
(Charge)/credit to other comprehensive income attributable to ExxonMobil		958	1,603	3,604

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.

Studies are periodically conducted to establish the preferred target asset allocation percentages. The target asset allocation for the U.S. benefit plans and the major non-U.S. plans is 30 percent equity securities and70 percent debt securities. The equity targets for the U.S. and certain non-U.S. plans include a small allocation to private equity partnerships that primarily focus on early-stage venture capital of 5 percent and 3 percent, respectively.

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 2017 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
			Fair Value Measurement						Fair Value Measurement
			at December 31, 2017, Using:						at December 31, 2017, Using:
							Net							Net
							Asset							Asset
			Level 1	Level 2		Level 3	Value (1)	Total	Level 1		Level 2		Level 3	Value (1)	Total
			(millions of dollars)
Asset category:
	Equity securities
		U.S.	-	-		-	1,665	1,665	-		-		-	2,967	2,967
		Non-U.S.	-	-		-	1,570	1,570	111	(2)	-		-	2,903	3,014
	Private equity		-	-		-	532	532	-		-		-	522	522
	Debt securities
		Corporate	-	5,260	(3)	-	1	5,261	-		131	(3)	-	5,215	5,346
		Government	-	3,604	(3)	-	2	3,606	237	(4)	32	(3)	-	9,056	9,325
		Asset-backed	-	-		-	1	1	-		34	(3)	-	72	106
	Cash		-	-		-	138	138	54		2	(5)	-	102	158
Total at fair value			-	8,864		-	3,909	12,773	402		199		-	20,837	21,438
	Insurance contracts
		at contract value						9							23
Total plan assets								12,782							21,461

(1)Per ASU 2015-07, certain instruments that are measured at fair value using the Net Asset Value (NAV) per share practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total value of plan assets.

(2) For non-U.S. equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges.

(3)For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.

(4)For government debt securities that are traded on active exchanges, fair value is based on observable quoted prices.

(5)For cash balances that are subject to withdrawal penalties or other adjustments, the fair value is treated as a Level 2 input.

			Other Postretirement
			Fair Value Measurement
			at December 31, 2017, Using:
								Net
								Asset
				Level 1	Level 2		Level 3	Value (1)	Total
				(millions of dollars)
Asset category:
	Equity securities
		U.S.		-	-		-	73	73
		Non-U.S.		-	-		-	55	55
	Private equity			-	-		-	-	-
	Debt securities
		Corporate		-	99	(2)	-	-	99
		Government		-	197	(2)	-	-	197
		Asset-backed		-	1	(2)	-	-	1
	Cash			-	-		-	2	2
Total at fair value				-	297		-	130	427

(1) Per ASU 2015-07, certain instruments that are measured at fair value using the Net Asset Value (NAV) per share practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total value of plan assets.

(2) For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.

The 2016 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
			Fair Value Measurement						Fair Value Measurement
			at December 31, 2016, Using:						at December 31, 2016, Using:
							Net							Net
							Asset							Asset
			Level 1	Level 2		Level 3	Value (1)	Total	Level 1		Level 2		Level 3	Value (1)	Total
			(millions of dollars)
Asset category:
	Equity securities
		U.S.	-	-		-	2,347	2,347	-		-		-	3,343	3,343
		Non-U.S.	-	-		-	2,126	2,126	142	(2)	2	(3)	-	3,632	3,776
	Private equity		-	-		-	553	553	-		-		-	539	539
	Debt securities
		Corporate	-	4,978	(4)	-	1	4,979	-		123	(4)	-	4,075	4,198
		Government	-	2,635	(4)	-	1	2,636	167	(5)	32	(4)	-	6,753	6,952
		Asset-backed	-	3	(4)	-	1	4	-		35	(4)	-	72	107
	Cash		-	-		-	137	137	23		9	(6)	-	73	105
Total at fair value			-	7,616		-	5,166	12,782	332		201		-	18,487	19,020
	Insurance contracts
		at contract value						11							23
Total plan assets								12,793							19,043

(1) Per ASU 2015-07, certain instruments that are measured at fair value using the Net Asset Value (NAV) per share practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total value of plan assets.

(2) For non-U.S. equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges.

(3) For U.S. and non-U.S. equity securities held in the form of fund units that are redeemable at the measurement date, the published unit value is treated as a Level 2 input. The fair value of the securities owned by the funds is based on observable quoted prices on active exchanges, which are Level 1 inputs.

(4) For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.

(5) For government debt securities that are traded on active exchanges, fair value is based on observable quoted prices.

(6) For cash balances that are subject to withdrawal penalties or other adjustments, the fair value is treated as a Level 2 input.

			Other Postretirement
			Fair Value Measurement
			at December 31, 2016, Using:
								Net
								Asset
				Level 1	Level 2		Level 3	Value (1)	Total
			(millions of dollars)
Asset category:
	Equity securities
		U.S.		-	-		-	98	98
		Non-U.S.		-	-		-	71	71
	Private equity			-	-		-	-	-
	Debt securities
		Corporate		-	82	(2)	-	-	82
		Government		-	159	(2)	-	-	159
		Asset-backed		-	1	(2)	-	-	1
	Cash			-	-		-	-	-
Total at fair value				-	242		-	169	411

(1)Per ASU 2015-07, certain instruments that are measured at fair value using the Net Asset Value (NAV) per share practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total value of plan assets.

(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 in excess of plan assets is shown in the table below:

		Pension Benefits
		U.S.			Non-U.S.
			2017	2016		2017	2016
		(millions of dollars)
For funded pension plans with an accumulated benefit obligation
	in excess of plan assets:
	Projected benefit obligation		16,739	17,099		3,384	837
	Accumulated benefit obligation		14,022	14,390		3,264	612
	Fair value of plan assets		12,782	12,793		3,219	564
For unfunded pension plans:
	Projected benefit obligation		2,571	2,861		6,915	6,365
	Accumulated benefit obligation		1,535	1,855		6,208	5,687

					Other
			Pension Benefits		Postretirement
			U.S.	Non-U.S.	Benefits
		(millions of dollars)
Estimated 2018 amortization from accumulated other comprehensive income:
	Net actuarial loss/(gain) (1)		539	412		112
	Prior service cost (2)		5	47		(40)

(1) The Corporation amortizes the net balance of actuarial losses/(gains) as a component of net periodic benefit cost over the average remaining service period of active plan participants.

(2) The Corporation amortizes prior service cost on a straight-line basis as permitted under authoritative guidance for defined benefit pension and other postretirement benefit plans.

		Pension Benefits		Other Postretirement Benefits
					Medicare
		U.S.	Non-U.S.	Gross	Subsidy Receipt
		(millions of dollars)
Contributions expected in 2018		490	720	-		-
Benefit payments expected in:
	2018	1,364	1,183	459		25
	2019	1,279	1,163	465		26
	2020	1,267	1,197	469		28
	2021	1,268	1,203	470		29
	2022	1,285	1,220	468		30
	2023 - 2027	6,355	6,162	2,329		174

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Disclosures About Segments And Related Information

12 Months Ended

Dec. 31, 2017

Disclosures About Segments And Related Information [Abstract]

Disclosures About Segments And Related Information

18. Disclosures about Segments and Related Information

The Upstream, Downstreamand Chemical functions best define the operating segments of the business that are reported separately. 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 Downstream segment is organized and operates to manufacture and sell petroleum products. The Chemical segment is organized and operates to manufacture and sell petrochemicals. These segments are broadly understood across the petroleum and petrochemical industries.

These functions have been defined as the operating segments of the Corporation because they are the segments (1) that engage in business activities from which revenues are earned and expenses are incurred; (2) whose operating results are regularly reviewed by the Corporation’s chief operating decision maker to make decisions about resources to be allocated to the segment and to assess its performance; and (3) for which discrete financial information is available.

Earnings after income tax include transfers at estimated market prices.

In corporate and financing activities, interest revenue relates to interest earned on cash deposits and marketable securities.Interest expense includes non-debt-related interest expense of $136 million in 2017, $63 million in 2016 and$100 million in 2015.

													Corporate
	Upstream				Downstream				Chemical					and	Corporate
	U.S.		Non-U.S.		U.S.		Non-U.S.		U.S.		Non-U.S.		Financing			Total
		(millions of dollars)
As of December 31, 2017
Earnings after income tax		6,622		6,733		1,948		3,649		2,190		2,328		(3,760)		19,710
Earnings of equity companies included above		216		3,618		118		490		90		1,217		(369)		5,380
Sales and other operating revenue		9,349		14,508		61,695		122,881		11,035		17,659		35		237,162
Intersegment revenue		5,729		22,935		14,857		22,263		7,270		5,550		208		-
Depreciation and depletion expense		6,963		9,741		658		883		299		504		845		19,893
Interest revenue		-		-		-		-		-		-		36		36
Interest expense		87		29		1		6		-		-		478		601
Income tax expense (benefit)		(8,552)		5,463		(61)		934		362		664		16		(1,174)
Effect of U.S. tax reform - noncash		(7,602)		480		(618)		-		(335)		-		2,133		(5,942)
Additions to property, plant and equipment		9,761		8,617		769		1,551		1,330		2,019		854		24,901
Investments in equity companies		4,680		14,494		276		1,462		341		3,387		(286)		24,354
Total assets		89,048		155,822		18,172		34,294		13,363		21,133		16,859		348,691
As of December 31, 2016
Earnings after income tax		(4,151)		4,347		1,094		3,107		1,876		2,739		(1,172)		7,840
Earnings of equity companies included above		53		3,359		58		404		111		1,188		(367)		4,806
Sales and other operating revenue(1)		7,552		12,278		52,630		102,756		9,944		15,447		21		200,628
Intersegment revenue		3,827		18,099		11,796		18,775		6,404		4,211		236		-
Depreciation and depletion expense		9,626		9,550		628		889		275		477		863		22,308
Interest revenue		-		-		-		-		-		-		30		30
Interest expense		17		29		1		8		-		-		398		453
Income tax expense (benefit)		(2,600)		1,818		396		951		693		609		(2,273)		(406)
Additions to property, plant and equipment		3,144		7,878		791		1,525		1,463		482		817		16,100
Investments in equity companies		4,917		11,364		111		1,255		158		3,247		(242)		20,810
Total assets		86,146		153,183		16,201		29,208		11,600		18,453		15,523		330,314
As of December 31, 2015
Earnings after income tax		(1,079)		8,180		1,901		4,656		2,386		2,032		(1,926)		16,150
Earnings of equity companies included above		226		5,831		170		444		144		1,235		(406)		7,644
Sales and other operating revenue(1)		8,241		15,446		69,706		119,050		10,879		16,524		8		239,854
Intersegment revenue		4,344		20,839		12,440		22,166		7,442		5,168		274		-
Depreciation and depletion expense		5,301		9,227		664		1,003		375		654		824		18,048
Interest revenue		-		-		-		-		-		-		46		46
Interest expense		26		27		8		4		-		1		245		311
Income tax expense (benefit)		(879)		4,703		866		1,325		646		633		(1,879)		5,415
Additions to property, plant and equipment		6,915		14,561		916		1,477		1,865		629		1,112		27,475
Investments in equity companies		5,160		10,980		95		1,179		125		3,025		(227)		20,337
Total assets		93,648		155,316		16,498		29,808		10,174		18,236		13,078		336,758

(1) Sales and other operating revenue excludes previously reported sales-based taxes of $17,980 million for 2016 and $19,634 million for 2015. See Note 2: Accounting Changes.

Geographic
Sales and other operating revenue(1)		2017	2016	2015
		(millions of dollars)
United States		82,079	70,126	88,826
Non-U.S.		155,083	130,502	151,028
	Total	237,162	200,628	239,854
Significant non-U.S. revenue sources include:
	Canada	20,116	17,682	19,076
	United Kingdom	16,611	15,452	20,605
	Belgium	13,633	10,834	12,481
	Singapore	11,589	9,919	10,632
	Italy	11,476	9,715	11,220
	France	11,235	9,487	10,631
	Germany	8,484	7,899	8,447

(1) Sales and other operating revenue excludes previously reported sales-based taxes of $17,980 million for 2016 and $19,634 million for 2015. See Note 2: Accounting Changes.

Long-lived assets		2017	2016	2015
		(millions of dollars)
United States		105,101	101,194	107,039
Non-U.S.		147,529	143,030	144,566
	Total	252,630	244,224	251,605
Significant non-U.S. long-lived assets include:
	Canada	41,138	40,144	39,775
	Australia	16,908	16,510	15,894
	Singapore	11,292	9,769	9,681
	Kazakhstan	10,121	10,325	9,705
	Nigeria	9,734	11,314	12,222
	Papua New Guinea	8,463	5,719	5,985
	Angola	7,689	8,413	8,777
	Russia	5,702	4,828	4,744

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Income And Other Taxes

12 Months Ended

Dec. 31, 2017

Income And Other Taxes [Abstract]

Income And Other Taxes

19. Income and Other Taxes

						2017				2016				2015
				U.S.	Non-U.S.		Total	U.S.	Non-U.S.		Total	U.S.	Non-U.S.		Total
								(millions of dollars)
Income tax expense
	Federal and non-U.S.
		Current		577		6,633	7,210	(214)		4,056	3,842	-		7,126	7,126
		Deferred - net		(9,075)		754	(8,321)	(2,801)		(1,422)	(4,223)	(1,166)		(571)	(1,737)
	U.S. tax on non-U.S. operations			17		-	17	41		-	41	38		-	38
			Total federal and non-U.S.	(8,481)		7,387	(1,094)	(2,974)		2,634	(340)	(1,128)		6,555	5,427
	State			(80)		-	(80)	(66)		-	(66)	(12)		-	(12)
			Total income tax expense	(8,561)		7,387	(1,174)	(3,040)		2,634	(406)	(1,140)		6,555	5,415
All other taxes and duties
	Other taxes and duties			3,330		26,774	30,104	3,209		25,811	29,020	3,206		27,103	30,309
	Included in production and
		manufacturing expenses		1,107		747	1,854	1,052		808	1,860	1,157		828	1,985
	Included in SG&A expenses			147		354	501	133		362	495	150		390	540
		Total other taxes and duties		4,584		27,875	32,459	4,394		26,981	31,375	4,513		28,321	32,834
			Total	(3,977)		35,262	31,285	1,354		29,615	30,969	3,373		34,876	38,249

Sales-based taxes were previously reported gross on the income statement and included in total taxes in the above table. See Note 2: Accounting Changes.

The above provisions for deferred income taxes include a net credit of $5,920 million in 2017, reflecting a $5,942 million credit related to U.S. tax reform and $22 million of other changes in tax laws and rates outside of the United States. Deferred income tax expense also includes net charges of $180 million in 2016 and $177 million in 2015 for the effect of changes in tax laws and rates.

Following the December 22, 2017, enactment of the U.S. Tax Cuts and Jobs Act, in accordance with Accounting Standard Codification Topic 740 (Income Taxes) and following guidance outlined in the SEC Staff Accounting Bulletin No. 118, the Corporation has included reasonable estimates of the income tax effects of the changes in tax law and tax rate. These include amounts for the remeasurement of the deferred income tax balance from the reduction in the corporate tax rate from 35 to 21 percent and the mandatory deemed repatriation of undistributed foreign earnings and profits. The Corporation has paid taxes on earnings outside the United States at tax rates on average above the historical U.S. rate of 35 percent. As a result, the deemed repatriation tax does not create a significant tax impact for ExxonMobil. The impact of tax law changes on the Corporation’s financial statements could differ from its estimates due to further analysis of the new law, regulatory guidance, technical corrections legislation, or guidance under U.S. GAAP. If significant changes occur, the Corporation will provide updated information in connection with future regulatory filings.

The reconciliation between income tax expense and a theoretical U.S. tax computed by applying a rate of 35 percent for2017, 2016 and2015 is as follows:

			2017	2016	2015
			(millions of dollars)
Income before income taxes
	United States		(754)	(5,832)	147
	Non-U.S.		19,428	13,801	21,819
		Total	18,674	7,969	21,966
Theoretical tax			6,536	2,789	7,688
Effect of equity method of accounting			(1,883)	(1,682)	(2,675)
Non-U.S. taxes in excess of/(less than) theoretical U.S. tax (1)			1,848	(582)	1,415
Effect of U.S. tax reform			(5,942)	-	-
Other (2)			(1,733)	(931)	(1,013)
		Total income tax expense	(1,174)	(406)	5,415
Effective tax rate calculation
Income taxes			(1,174)	(406)	5,415
ExxonMobil share of equity company income taxes			2,228	1,692	3,011
		Total income taxes	1,054	1,286	8,426
Net income including noncontrolling interests			19,848	8,375	16,551
		Total income before taxes	20,902	9,661	24,977
Effective income tax rate			5%	13%	34%

(1) 2016 includes a $227 million expense from an adjustment to deferred taxes and a $548 million benefit from an adjustment to a tax position in prior years.

(2) 2017 includes an exploration tax benefit of $708 million. 2016 includes an exploration tax benefit of $198 million and benefits from an adjustment to a prior year tax position of $176 million.

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. Balances at December 31, 2017, reflect the deferred income tax effects from the enactment of the U.S. Tax Cuts and Jobs Act of 2017. The Corporation has elected to account for the tax on global intangible low-taxed income (GILTI) as a tax expense in the period in which it is incurred.

Deferred tax liabilities/(assets) are comprised of the following at December 31:

Tax effects of temporary differences for:		2017	2016
		(millions of dollars)
Property, plant and equipment		36,559	46,744
Other liabilities		5,625	4,262
	Total deferred tax liabilities	42,184	51,006
Pension and other postretirement benefits		(4,338)	(6,053)
Asset retirement obligations		(4,237)	(5,454)
Tax loss carryforwards		(6,767)	(5,472)
Other assets		(5,832)	(5,615)
	Total deferred tax assets	(21,174)	(22,594)
Asset valuation allowances		2,565	1,509
	Net deferred tax liabilities	23,575	29,921

In 2017, asset valuation allowances of $2,565million increased by $1,056 million and included net provisions of $502 million, $402 million recorded in the acquisition of InterOil Corporation, and effects of foreign currency translation of $152 million.

Balance sheet classification		2017	2016
		(millions of dollars)
Other assets, including intangibles, net		(3,318)	(4,120)
Deferred income tax liabilities		26,893	34,041
	Net deferred tax liabilities	23,575	29,921

The Corporation’s earnings from subsidiary companies outside the United States were subject to the deemed repatriation required by the U.S. Tax Cuts and Jobs Act of 2017. Those amounts continue to be indefinitely reinvested and are retained to fund prior and future capital project expenditures. Deferred income taxes have not been recorded for certain additional future tax obligations, such as foreign withholding tax and state tax, as these earnings are expected to be indefinitely reinvested for the foreseeable future. As of December 31, 2017, it is not practicable to estimate the unrecognized deferred income tax liability.

UnrecognizedTaxBenefits. The Corporation is subject to income taxation in many jurisdictions around the world. 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		2017	2016	2015
		(millions of dollars)
Balance at January 1		9,468	9,396	8,986
	Additions based on current year's tax positions	522	655	903
	Additions for prior years' tax positions	523	534	496
	Reductions for prior years' tax positions	(865)	(1,019)	(190)
	Reductions due to lapse of the statute of limitations	(113)	(7)	(4)
	Settlements with tax authorities	(782)	(70)	(725)
	Foreign exchange effects/other	30	(21)	(70)
Balance at December 31		8,783	9,468	9,396

The gross unrecognized tax benefit balances shown above 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 2017, 2016 and 2015 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 tax positions since such timing is not entirely within the control of the Corporation.In the United States, the Corporation has various ongoing U.S. federal income tax positions at issue with the Internal Revenue Service (IRS) for tax years beginning in 2006. The IRS has asserted penalties associated with several of those positions. The Corporation has not recognized the penalties as an expense becausethe Corporation does not expect the penalties to be sustained under applicable law. The Corporation has filed a refund suit for tax years 2006-2009 in a U.S. federal district court with respect to the positions at issue for those years. Unfavorable resolution of all positions at issue with the IRS would not have a materially adverse effect on the Corporation’s net income or liquidity.

It is reasonably possible that the total amount of unrecognized tax benefits could increase or decrease by 10 percent in the next 12 months with no material impact on the Corporation's net income.

The following table summarizes the tax years that remain subject to examination by major tax jurisdiction:

Country of Operation	Open Tax Years
Abu Dhabi	2014 - 2017
Angola	2016 - 2017
Australia	2008 - 2017
Belgium	2015 - 2017
Canada	1998 - 2017
Equatorial Guinea	2007 - 2017
Indonesia	2007 - 2017
Iraq	2012 - 2017
Malaysia	2009 - 2017
Nigeria	2006 - 2017
Norway	2007 - 2017
Papua New Guinea	2008 - 2017
Russia	2015 - 2017
United Kingdom	2015 - 2017
United States	2006 - 2017

The Corporation classifies interest on income tax-related balances as interest expense or interest income and classifies tax-related penalties as operating expense.

The Corporation incurred $36 million, $4 million and $39 million in interest expense on income tax reserves in 2017, 2016 and 2015, respectively. The related interest payable balances were $168 million and $191 million at December 31, 2017, and 2016, respectively.

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Acquisitions

12 Months Ended

Dec. 31, 2017

Business Combinations [Abstract]

Acquisitions [Text Block]

20. Acquisitions

InterOil Corporation

On February 22, 2017, the Corporation completed the acquisition of InterOil Corporation (IOC) for $2.7 billion. The IOC acquisition was mostly unproved properties in Papua New Guinea. Consideration included 28 million shares of Exxon Mobil Corporation common stock having a value on the acquisition date of $2.2 billion, a Contingent Resource Payment (CRP) with a fair value of $0.3 billion and cash of $0.2 billion. The CRP provided IOC shareholders $7.07 per share in cash for each incremental independently certified Trillion Cubic Feet Equivalent (TCFE) of resources above 6.2 TCFE, up to 11.0 TCFE. IOC’s assets include a contingent receivable related to the same resource base for volumes in excess of 3.5 TCFE at amounts ranging from $0.24 - $0.40 per thousand cubic feet equivalent. The fair value of the contingent receivable was $1.1 billion at the acquisition date. Fair values of contingent amounts were based on assumptions about the outcome of the resource certification, future business plans and appropriate discount rates.

On September 6, 2017, the resource certification was finalized triggering both payment of the CRP to former IOC shareholders and receipt of the current portion of the contingent receivable. The earnings impact from settlement of the CRP and the related contingent receivable was not material.

Permian Basin Properties

On February 28, 2017, the Corporation completed the acquisition for $6.2 billion of a number of companies from the Bass family in Fort Worth, Texas, that indirectly own mostly unproved oil and gas properties in the Permian Basin. Consideration included 68 million shares of Exxon Mobil Corporation common stock having a value on the acquisition date of $5.5 billion, together with additional contingent cash payments tied to future drilling and completion activities (up to a maximum of $1.02 billion). Fair value of the contingent payment was $0.7 billion as of the acquisition date and is expected to be paid beginning in 2020 and ending no later than 2032 commensurate with development of the resource. Fair value of the contingent payment was based on assumptions including drilling and completion activities, appropriate discount rates and tax rates.

The fair value of the contingent payment is adjusted each quarter. The earnings impact from these adjustments was not material.

Below is a summary of the net assets acquired for each acquisition.

	IOC	Permian
	(billions of dollars)
Current assets	0.6	-
Property, plant and equipment	2.9	6.3
Other	0.6	-
Total assets	4.1	6.3
Current liabilities	0.5	-
Long-term liabilities	0.9	0.1
Total liabilities	1.4	0.1
Net assets acquired	2.7	6.2

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Summary Of Accounting Policies (Policy)

12 Months Ended

Dec. 31, 2017

Summary Of Accounting Policies [Abstract]

Principles Of Consolidation

Principles of Consolidation

The Consolidated Financial Statements include the accounts of subsidiaries the Corporation controls. 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”. The Corporation’s share of the net income of these companies is included in the Consolidated Statement of Income caption “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.

Evidence of loss in value that might indicate impairment of investments in companies accounted for on the equity method is assessed to determine if such evidence represents a loss in value of the Corporation’s investment that is other than temporary. 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 evidence of an other than temporary loss in fair value below carrying amount is determined, an impairment is recognized. 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.

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. Revenues are recognized when the products are delivered, which occurs when the customer has taken title and has assumed the risks and rewards of ownership, prices are fixed or determinable and collectibility is reasonably assured.

Revenues from the production of natural gas properties in which the Corporation has an interest with other producers are recognized on the basis of the Corporation’s net working interest. Differences between actual production and net working interest volumes are not significant.

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.

Taxes on Sales Transactions

Taxes on Sales Transactions

Beginning in 2017, the Corporation revised its reporting of certain sales and value-added taxes imposed on and concurrent with revenue-producing transactions with customers and collected on behalf of governmental authorities (sales-based taxes). This changes reporting of sales-based taxes from gross reporting (included in both “Sales and other operating revenue” and “Sales-based taxes”) to net reporting (excluded from both “Sales and other operating revenue” and “Sales-based taxes”) in the Consolidated Statement of Income. This change in reporting was applied retrospectively and does not affect earnings. Similar taxes,for which the Corporation is not considered to be an agent for the government, continue to be reported on a gross basis.

Derivative Instruments

Derivative Instruments

The Corporation has the ability to use derivative instruments to offset exposures associated with commodity prices, foreign currency exchange ratesand interest rates that arise from existing assets, liabilities and forecasted transactions. The gains and losses resulting from changes in the fair value of derivatives are recorded in income.

The Corporation may designate derivatives as fair value hedges or cash flow hedges. For fair value hedges,the gain or loss on the derivative and the offsetting loss or gain on the hedged item are recognized in current earnings.For cash flow hedges, the effective part of the hedge is initially reported as a component of other comprehensive income and subsequently reclassified into earnings in the period that the forecasted transaction affects earnings, and the ineffective part of the hedge is recognized immediately in 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

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

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.

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 gas reserves. 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 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 producesuch 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 generally are 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 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.

Asset valuation analyses performed as part of its asset management program and other profitability reviews assist the Corporation in assessing whether events or circumstances indicate the carrying amounts of any of its assets may not be recoverable.

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 and levels of prosperity. Because the lifespans of the vast majority of the Corporation’s major assets are measured in decades, the value of these assets is predominantly based on long-term views of future commodity prices and production costs. During the lifespan of these major assets, the Corporation expects that oil and gas prices will experience significant volatility, and consequently these assets will experience periods of higher earnings and periods of lower earnings, or even losses. In assessing whether the 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. While near-term prices are subject to wide fluctuations, longer-term price views are more stable and meaningful for purposes of assessing future cash flows.

When the industry experiences a prolonged and deep reduction in commodity prices, the market supply and demand conditions may result in changes to the Corporation’s long-term price or margin assumptions it uses for its capital investment decisions. To the extent those changes result in a significant reduction to its long-term oil price, natural gas price or margin ranges, the Corporation may consider that situation, in conjunction with other events and changes in circumstances such as a history of operating losses, an indicator of potential impairment for certain assets.

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. These prices represent discrete points in time and could be higher or lower than the Corporation’s long-term 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.

If events or 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 Corporation’s assumptions which are developed in the annual planning and budgeting process, 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, refining and chemical margins, volumes, costs, and foreign currency exchange rates. Volumes are based on projected field and facility production profiles, throughput, or sales. Where unproved reserves exist, an appropriately risk-adjusted amount of these reserves may be included in the evaluation. Cash flow estimates for impairment testing exclude the effects of derivative instruments.

An asset group is impaired if its estimated undiscounted cash flows are less than the asset’s carrying value. Impairments are measured by the amount by which the carrying value exceeds fair value. Fair value is based on market prices if an active market exists for the asset group, or discounted cash flows using a discount rate commensurate with the risk. Significant unproved properties are assessed for impairment individually, and valuation allowances against the capitalized costs are recorded based on 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.

Other. 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. Losses on properties sold are recognized when incurred or when the properties are held for sale and the fair value of the properties is less than the carrying value.

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.

Asset Retirement Obligations And Environmental Liabilities

Asset Retirement Obligations and Environmental Liabilities

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. The costs associated with these liabilities are capitalized as part of the related assets and depreciated. Over time, the liabilities are accreted for the change in their present value.

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.

Downstream and Chemical operations primarily use the local currency. However, the U.S. dollar is used in countries with a history of high inflation (primarily in Latin America) and 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 Canada, the United Kingdom, Norway and continental 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.

Stock-Based Payments

Stock-Based Payments

The Corporation awards stock-based compensation to employees in the form of restricted stock and restricted stock units. Compensation expense is measured by the price of the stock at the date of grant and is recognized in income over the requisite service period.

Tax on Global Intangible Low-taxed Income

The Corporation has elected to account for the tax on global intangible low-taxed income (GILTI) as a tax expense in the period in which it is incurred.

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Accounting Changes (Tables)

12 Months Ended

Dec. 31, 2017

New Accounting Pronouncements And Changes In Accounting Principles [Abstract]

Accounting Changes

	2016			2015
	As Reported	Change	As Adjusted	As Reported	Change	As Adjusted
	(millions of dollars)
Sales and other operating revenue	218,608	(17,980)	200,628	259,488	(19,634)	239,854
Sales-based taxes	21,090	(21,090)	-	22,678	(22,678)	-
Other taxes and duties	25,910	3,110	29,020	27,265	3,044	30,309

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Miscellaneous Financial Information (Tables)

12 Months Ended

Dec. 31, 2017

Miscellaneous Financial Information [Abstract]

Crude Oil, Products And Merchandise

		2017	2016
		(billions of dollars)
Crude oil		4.6	3.9
Petroleum products		4.3	3.7
Chemical products		3.3	2.8
Gas/other		0.7	0.5
	Total	12.9	10.9

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Other Comprehensive Income Information (Tables)

12 Months Ended

Dec. 31, 2017

Other Comprehensive Income Information [Abstract]

Schedule Of Accumulated Other Comprehensive Income Information

		Cumulative	Post-
		Foreign	retirement	Unrealized
		Exchange	Benefits	Change in
ExxonMobil Share of Accumulated Other		Translation	Reserves	Stock
Comprehensive Income		Adjustment	Adjustment	Investments	Total
		(millions of dollars)
Balance as of December 31, 2014		(5,952)	(12,945)	(60)	(18,957)
Current period change excluding amounts reclassified
	from accumulated other comprehensive income	(8,204)	2,202	33	(5,969)
Amounts reclassified from accumulated other
	comprehensive income	(14)	1,402	27	1,415
Total change in accumulated other comprehensive income		(8,218)	3,604	60	(4,554)
Balance as of December 31, 2015		(14,170)	(9,341)	-	(23,511)
Current period change excluding amounts reclassified
	from accumulated other comprehensive income	(331)	552	-	221
Amounts reclassified from accumulated other
	comprehensive income	-	1,051	-	1,051
Total change in accumulated other comprehensive income		(331)	1,603	-	1,272
Balance as of December 31, 2016		(14,501)	(7,738)	-	(22,239)
Current period change excluding amounts reclassified
	from accumulated other comprehensive income	4,879	(170)	-	4,709
Amounts reclassified from accumulated other
	comprehensive income	140	1,128	-	1,268
Total change in accumulated other comprehensive income		5,019	958	-	5,977
Balance as of December 31, 2017		(9,482)	(6,780)	-	(16,262)

Reclassification Out Of Accumulated Other Comprehensive Income

Amounts Reclassified Out of Accumulated Other
Comprehensive Income - Before-tax Income/(Expense)		2017	2016	2015
		(millions of dollars)
Foreign exchange translation gain/(loss) included in net income
	(Statement of Income line: Other income)	(234)	-	14
Amortization and settlement of postretirement benefits reserves
	adjustment included in net periodic benefit costs(1)	(1,656)	(1,531)	(2,066)
Realized change in fair value of stock investments included in net income
	(Statement of Income line: Other income)	-	-	(42)

(1)These accumulated other comprehensive income components are included in the computation of net periodic pension cost. (See Note 17 – Pension and Other Postretirement Benefits for additional details.)

Schedule Of Income Tax (Expense)/Credit For Components Of Other Comprehensive Income

Income Tax (Expense)/Credit For
Components of Other Comprehensive Income		2017	2016	2015
		(millions of dollars)
Foreign exchange translation adjustment		67	43	170
Postretirement benefits reserves adjustment (excluding amortization)		201	(247)	(1,192)
Amortization and settlement of postretirement benefits reserves
	adjustment included in net periodic benefit costs	(491)	(445)	(618)
Unrealized change in fair value of stock investments		-	-	(17)
Realized change in fair value of stock investments included in net income		-	-	(15)
Total		(223)	(649)	(1,672)

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Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2017

Cash Flow Information [Abstract]

Cash payments for interest and income taxes

	2017	2016	2015
	(millions of dollars)
Cash payments for interest	1,132	818	586
Cash payments for income taxes	7,510	4,214	7,269

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Additional Working Capital Information (Tables)

12 Months Ended

Dec. 31, 2017

Additional Working Capital Information [Abstract]

Schedule Of Notes, Accounts Receivable And Payable, Loans Payable, And Accrued Liabilities

			Dec. 31	Dec. 31
			2017	2016
			(millions of dollars)
Notes and accounts receivable
	Trade, less reserves of $72 million and $75 million		21,274	16,033
	Other, less reserves of $539 million and $627 million		4,323	5,361
		Total	25,597	21,394
Notes and loans payable
	Bank loans		115	143
	Commercial paper		13,049	10,727
	Long-term debt due within one year		4,766	2,960
		Total	17,930	13,830
Accounts payable and accrued liabilities
	Trade payables		21,701	17,801
	Payables to equity companies		5,453	4,748
	Accrued taxes other than income taxes		3,311	2,653
	Other		6,331	5,991
		Total	36,796	31,193

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Equity Company Information (Tables)

12 Months Ended

Dec. 31, 2017

Equity Company Information [Abstract]

Schedule Of Equity Company Financial Summary

		2017			2016			2015
Equity Company			ExxonMobil			ExxonMobil			ExxonMobil
Financial Summary		Total		Share	Total		Share	Total		Share
		(millions of dollars)
Total revenues		94,791		29,340	80,247		24,668	111,866		34,297
Income before income taxes		29,748		8,498	22,269		6,509	36,379		10,670
Income taxes		8,421		2,236	6,334		1,701	11,048		3,019
	Income from equity affiliates	21,327		6,262	15,935		4,808	25,331		7,651
Current assets		35,367		12,050	34,412		11,392	32,879		11,244
Long-term assets		122,221		34,931	109,646		32,357	109,684		32,878
	Total assets	157,588		46,981	144,058		43,749	142,563		44,122
Current liabilities		21,725		6,348	20,507		5,765	22,947		6,738
Long-term liabilities		59,736		17,056	62,110		17,288	60,388		17,165
	Net assets	76,127		23,577	61,441		20,696	59,228		20,219

Schedule Of The Corporation's Percentage Ownership Interest

	Percentage
	Ownership
	Interest
Upstream
Aera Energy LLC	48
Barzan Gas Company Limited	7
BEB Erdgas und Erdoel GmbH & Co. KG	50
Cameroon Oil Transportation Company S.A.	41
Cross Timbers Energy, LLC	50
Golden Pass LNG Terminal LLC	18
Marine Well Containment Company LLC	10
Mozambique Rovuma Venture, S.p.A.	36
Nederlandse Aardolie Maatschappij B.V.	50
Qatar Liquefied Gas Company Limited (2)	24
Ras Laffan Liquefied Natural Gas Company Limited	25
Ras Laffan Liquefied Natural Gas Company Limited (II)	31
Ras Laffan Liquefied Natural Gas Company Limited (3)	30
South Hook LNG Terminal Company Limited	24
Tengizchevroil, LLP	25
Terminale GNL Adriatico S.r.l.	71
Downstream
Fujian Refining & Petrochemical Co. Ltd.	25
Permian Express Partners LLC	12
Saudi Aramco Mobil Refinery Company Ltd.	50
Chemical
Al-Jubail Petrochemical Company	50
Infineum Italia s.r.l.	50
Infineum Singapore Pte. Ltd.	50
Infineum USA L.P.	50
Saudi Yanbu Petrochemical Co.	50

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Investments, Advances And Long-Term Receivables (Tables)

12 Months Ended

Dec. 31, 2017

Investments, Advances And Long-Term Receivables [Abstract]

Schedule Of Investments, Advances And Long-Term Receivables

			Dec. 31,	Dec. 31,
			2017	2016
			(millions of dollars)
Companies carried at equity in underlying assets
	Investments		24,354	20,810
	Advances		9,112	9,443
		Total equity company investments and advances	33,466	30,253
Companies carried at cost or less and stock investments carried at fair value			174	154
Long-term receivables and miscellaneous investments at cost or less, net of reserves
	of $5,432 million and $4,141 million		5,520	4,695
		Total	39,160	35,102

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Property, Plant And Equipment And Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant And Equipment And Asset Retirement Obligations [Abstract]

Property, Plant And Equipment

		December 31, 2017		December 31, 2016
Property, Plant and Equipment		Cost	Net	Cost	Net
		(millions of dollars)
Upstream		371,904	200,291	355,265	195,904
Downstream		50,343	21,732	47,915	20,588
Chemical		37,966	20,117	34,098	17,401
Other		16,972	10,490	16,637	10,331
	Total	477,185	252,630	453,915	244,224

Asset Retirement Obligations

		2017	2016
		(millions of dollars)
Beginning balance		13,243	13,704
	Accretion expense and other provisions	780	740
	Reduction due to property sales	(906)	(134)
	Payments made	(730)	(549)
	Liabilities incurred	128	204
	Foreign currency translation	611	(513)
	Revisions	(421)	(209)
Ending balance		12,705	13,243

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Accounting For Suspended Exploratory Well Costs (Tables)

12 Months Ended

Dec. 31, 2017

Accounting For Suspended Exploratory Well Costs [Abstract]

Change In Capitalized Suspended Exploratory Well Costs

			2017	2016	2015
			(millions of dollars)
Balance beginning at January 1			4,477	4,372	3,587
	Additions pending the determination of proved reserves		906	180	847
	Charged to expense		(1,205)	(111)	(5)
	Reclassifications to wells, facilities and equipment based on the
		determination of proved reserves	(497)	-	(43)
	Divestments/Other		19	36	(14)
Ending balance at December 31			3,700	4,477	4,372
Ending balance attributed to equity companies included above			306	707	696

Period End Capitalized Suspended Exploratory Well Costs

			2017	2016	2015
			(millions of dollars)
Capitalized for a period of one year or less			906	180	847
	Capitalized for a period of between one and five years		1,345	2,981	2,386
	Capitalized for a period of between five and ten years		1,064	911	826
	Capitalized for a period of greater than ten years		385	405	313
Capitalized for a period greater than one year - subtotal			2,794	4,297	3,525
		Total	3,700	4,477	4,372

Number Of Projects With Suspended Exploratory Well Costs

			2017	2016	2015
Number of projects that only have exploratory well costs capitalized for a period
	of one year or less		11	2	4
Number of projects that have exploratory well costs capitalized for a period
	of greater than one year		46	58	55
		Total	57	60	59

Additional Detail For Projects With Completed Exploratory Activity Progressing Toward Development

			Years
		Dec. 31,	Wells
Country/Project		2017	Drilled	Comment
	(millions of dollars)
Angola
- AB32 Central NE Hub		69	2006 - 2014	Evaluating development plan for tieback to existing production facilities.
- Kaombo Split Hub		20	2005 - 2006	Evaluating development plan to tie into planned production facilities.
Phase 2
- Perpetua-Zinia-Acacia		15	2008 - 2009	Oil field near Pazflor development, awaiting capacity in existing/planned
				infrastructure.
Argentina
- La Invernada		72	2014	Evaluating development plan to tie into planned infrastructure.
Australia
- East Pilchard		8	2001	Gas field near Kipper/Tuna development, awaiting capacity in existing/
				planned infrastructure.
- SE Longtom		12	2010	Gas field near Tuna development, awaiting capacity in existing/planned
				infrastructure.
- SE Remora		36	2010	Gas field near Marlin development, awaiting capacity in existing/planned
				infrastructure.
Indonesia
- Kedung Keris		11	2011	Development activity under way to tie into planned production facilities.
Iraq
- Kurdistan Pirmam		109	2015	Evaluating commercialization alternatives, while waiting for government
				approval to enter Gas Holding Period.
Kazakhstan
- Kairan		53	2004 - 2007	Evaluating commercialization and field development alternatives, while
				continuing discussions with the government regarding the development plan.
- Kalamkas		18	2006 - 2009	Evaluating development alternatives, while continuing discussions with the
				government regarding development plan.
Malaysia
- Bindu		2	1995	Awaiting capacity in existing/planned infrastructure.
Nigeria
- Bolia		15	2002 - 2006	Evaluating development plan, while continuing discussions with the
				government regarding regional hub strategy.
- Bosi		79	2002 - 2006	Development activity under way, while continuing discussions with the
				government regarding development plan.
- Bosi Central		16	2006	Development activity under way, while continuing discussions with the
				government regarding development plan.
- Erha Northeast		26	2008	Evaluating development plan for tieback to existing production facilities.
- OML 138 Ukot SW		41	2014	Evaluating development plan for tieback to existing production facilities.
- OML 138 Ukot SS		13	2015	Evaluating development plan for tieback to existing production facilities.
- Pegi		32	2009	Awaiting capacity in existing/planned infrastructure.
- Satellite Field		12	2013	Evaluating development plan to tie into planned production facilities.
Development Phase 2
- Other (3 projects)		7	2002	Evaluating and pursuing development of several additional discoveries.
Norway
- Gamma		14	2008 - 2009	Evaluating development plan for tieback to existing production facilities.
- Lavrans		16	1995 - 1999	Evaluating development plan, awaiting capacity in existing Kristin
				production facility.
- Other (7 projects)		27	2008 - 2014	Evaluating development plans, including potential for tieback to existing
				production facilities.
Papua New Guinea
- Juha		28	2007	Progressing development plans to tie into existing LNG facilities.

			Years
		Dec. 31,	Wells
Country/Project		2017	Drilled	Comment
	(millions of dollars)
Republic of Congo
- Mer Tres Profonde Sud		56	2000 - 2007	Evaluating development alternatives, while continuing discussions with the
				government regarding development plan.
Romania
- Neptun Deep		536	2012 - 2016	Continuing discussions with the government regarding development plan.
Vietnam
- Blue Whale		296	2011 - 2015	Development planning activity under way, while continuing commercial
				discussions with the government.
Total 2017 (36 projects)		1,639

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Leased Facilities (Tables)

12 Months Ended

Dec. 31, 2017

Leased Facilities [Abstract]

Leased Facilities

	Lease Payments
	Under Minimum Commitments
		Drilling Rigs
		and Related
		Equipment	Other	Total
		(millions of dollars)
2018		169	767	936
2019		131	537	668
2020		101	397	498
2021		70	297	367
2022		41	259	300
2023 and beyond		99	1,422	1,521
Total		611	3,679	4,290

Net Rental Cost

			2017	2016	2015
			(millions of dollars)
Rental cost
	Drilling rigs and related equipment		792	1,274	1,853
	Other (net of sublease rental income)		1,826	1,817	2,076
		Total	2,618	3,091	3,929

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Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Earnings Per Share Computation

Earnings per common share	2017	2016	2015
Net income attributable to ExxonMobil(millions of dollars)	19,710	7,840	16,150
Weighted average number of common shares outstanding(millions of shares)	4,256	4,177	4,196
Earnings per common share(dollars) (1)	4.63	1.88	3.85
Dividends paid per common share (dollars)	3.06	2.98	2.88

(1)The earnings per common share and earnings per common share - assuming dilution are the same in each period shown.

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Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2017

Long-Term Debt [Abstract]

Summarized Long-Term Debt

			Average
			Rate (1)	2017	2016
				(millions of dollars)
Exxon Mobil Corporation
	1.305% notes due 2018			-	1,600
	1.439% notes due 2018			-	1,000
	Floating-rate notes due 2018 (Issued 2016)			-	750
	Floating-rate notes due 2018 (Issued 2015)			-	500
	1.819% notes due 2019			1,750	1,750
	1.708% notes due 2019			1,250	1,250
	Floating-rate notes due 2019 (Issued 2014)		1.345%	500	500
	Floating-rate notes due 2019 (Issued 2016)		1.953%	250	250
	1.912% notes due 2020			1,500	1,500
	2.222% notes due 2021			2,500	2,500
	2.397% notes due 2022			1,150	1,150
	Floating-rate notes due 2022		1.557%	500	500
	2.726% notes due 2023			1,250	1,250
	3.176% notes due 2024			1,000	1,000
	2.709% notes due 2025			1,750	1,750
	3.043% notes due 2026			2,500	2,500
	3.567% notes due 2045			1,000	1,000
	4.114% notes due 2046			2,500	2,500
XTO Energy Inc.(2)
	5.500% senior notes due 2018			-	371
	6.500% senior notes due 2018			-	453
	6.100% senior notes due 2036			195	197
	6.750% senior notes due 2037			302	304
	6.375% senior notes due 2038			232	233
Mobil Corporation
	8.625% debentures due 2021			250	249
Industrial revenue bonds due 2019-2051			0.764%	2,559	2,559
Other U.S. dollar obligations				162	103
Other foreign currency obligations				34	57
Capitalized lease obligations			8.504%	1,327	1,225
Debt issuance costs				(55)	(69)
		Total long-term debt		24,406	28,932

(1)Average effective interest rate for debt and average imputed interest rate for capital leases at December 31, 2017.

(2) Includes premiums of $102 million in 2017 and $138 million in 2016.

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Incentive Program (Tables)

12 Months Ended

Dec. 31, 2017

Incentive Program [Abstract]

Summary Of Restricted Stock And Units Outstanding

	2017
		Weighted Average
		Grant-Date
Restricted stock and units outstanding	Shares	Fair Value per Share
	(thousands)	(dollars)
Issued and outstanding at January 1	43,833		84.43
2016 award issued in 2017	9,582		87.70
Vested	(10,136)		80.71
Forfeited	(2,201)		80.11
Issued and outstanding at December 31	41,078		86.34

Grant Value Of Restricted Stock And Units

Value of restricted stock and units	2017	2016	2015
Grant price (dollars)	81.89	87.70	81.27
Value at date of grant:	(millions of dollars)
Restricted stock and units settled in stock	667	771	727
Units settled in cash	63	69	60
Total value	730	840	787

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Litigation And Other Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Litigation And Other Contingencies [Abstract]

Schedule Of Guarantees

					December 31, 2017
			Equity Company		Other Third-Party
			Obligations (1)		Obligations		Total
					(millions of dollars)
Guarantees
	Debt-related			98		270	368
	Other			1,191		4,514	5,705
		Total		1,289		4,784	6,073
(1) ExxonMobil share.

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Pension And Other Postretirement Benefits (Tables)

12 Months Ended

Dec. 31, 2017

Compensation And Retirement Disclosure [Abstract]

Change In Benefit Obligation Of Pension And Other Postretirement Benefits

		Pension Benefits				Other Postretirement
		U.S.		Non-U.S.		Benefits
		2017	2016	2017	2016	2017	2016
		(percent)
Weighted-average assumptions used to determine
	benefit obligations at December 31
	Discount rate	3.80	4.25	2.80	3.00	3.80	4.25
	Long-term rate of compensation increase	5.75	5.75	4.30	4.00	5.75	5.75
		(millions of dollars)
Change in benefit obligation
	Benefit obligation at January 1	19,960	19,583	25,196	25,117	7,800	8,282
	Service cost	784	810	596	585	129	153
	Interest cost	798	793	772	844	317	344
	Actuarial loss/(gain)	733	250	250	1,409	231	(560)
	Benefits paid (1) (2)	(2,964)	(1,476)	(1,291)	(1,228)	(543)	(537)
	Foreign exchange rate changes	-	-	2,484	(1,520)	40	16
	Amendments, divestments and other	(1)	-	(44)	(11)	126	102
Benefit obligation at December 31		19,310	19,960	27,963	25,196	8,100	7,800
Accumulated benefit obligation at December 31		15,557	16,245	25,557	22,867	-	-

(1)Benefit payments for funded and unfunded plans.

(2)For 2017 and 2016, other postretirement benefits paid are net of $16million and $22 million of Medicare subsidy receipts, respectively.

Change In Plan Assets Of Pension And Other Postretirement Benefits

		Pension Benefits				Other Postretirement
		U.S.		Non-U.S.		Benefits
		2017	2016	2017	2016	2017	2016
		(millions of dollars)
Change in plan assets
	Fair value at January 1	12,793	10,985	19,043	18,417	411	414
	Actual return on plan assets	1,831	949	1,442	2,443	40	20
	Foreign exchange rate changes	-	-	1,776	(1,452)	-	-
	Company contribution	619	2,068	440	492	34	36
	Benefits paid(1)	(2,461)	(1,209)	(902)	(857)	(58)	(59)
	Other	-	-	(338)	-	-	-
Fair value at December 31		12,782	12,793	21,461	19,043	427	411

(1) Benefit payments for funded plans.

Summary Of Assets In Excess Of/(Less Than) Benefit Obligation

		Pension Benefits
		U.S.		Non-U.S.
		2017	2016	2017	2016
		(millions of dollars)
Assets in excess of/(less than) benefit obligation
	Balance at December 31
	Funded plans	(3,957)	(4,306)	413	212
	Unfunded plans	(2,571)	(2,861)	(6,915)	(6,365)
Total		(6,528)	(7,167)	(6,502)	(6,153)

Amounts Recorded In Balance Sheet And Other Comprehensive Income

		Pension Benefits				Other Postretirement
		U.S.		Non-U.S.		Benefits
		2017	2016	2017	2016	2017	2016
		(millions of dollars)
Assets in excess of/(less than) benefit obligation
	Balance at December 31 (1)	(6,528)	(7,167)	(6,502)	(6,153)	(7,673)	(7,389)
Amounts recorded in the consolidated balance
	sheet consist of:
	Other assets	-	-	1,403	1,035	-	-
	Current liabilities	(276)	(409)	(338)	(294)	(360)	(361)
	Postretirement benefits reserves	(6,252)	(6,758)	(7,567)	(6,894)	(7,313)	(7,028)
Total recorded		(6,528)	(7,167)	(6,502)	(6,153)	(7,673)	(7,389)
Amounts recorded in accumulated other
	comprehensive income consist of:
	Net actuarial loss/(gain)	3,982	5,354	5,586	5,629	1,595	1,468
	Prior service cost	11	15	(143)	(123)	(397)	(430)
Total recorded in accumulated other
	comprehensive income	3,993	5,369	5,443	5,506	1,198	1,038

(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

									Other
			Pension Benefits						Postretirement
			U.S.			Non-U.S.			Benefits
			2017	2016	2015	2017	2016	2015	2017	2016	2015
Weighted-average assumptions used to
	determine net periodic benefit cost for
	years ended December 31	(percent)
	Discount rate		4.25	4.25	4.00	3.00	3.60	3.10	4.25	4.25	4.00
	Long-term rate of return on funded assets		6.50	6.50	7.00	5.20	5.25	5.90	6.50	6.50	7.00
	Long-term rate of compensation increase		5.75	5.75	5.75	4.00	4.80	5.30	5.75	5.75	5.75
Components of net periodic benefit cost			(millions of dollars)
	Service cost		784	810	864	596	585	689	129	153	170
	Interest cost		798	793	785	772	844	850	317	344	346
	Expected return on plan assets		(775)	(726)	(830)	(1,000)	(927)	(1,094)	(24)	(25)	(28)
	Amortization of actuarial loss/(gain)		438	492	544	476	536	730	96	153	206
	Amortization of prior service cost		5	6	6	47	54	87	(33)	(30)	(24)
	Net pension enhancement and
	curtailment/settlement cost		609	319	499	19	2	22	-	-	-
Net periodic benefit cost			1,859	1,694	1,868	910	1,094	1,284	485	595	670
Changes in amounts recorded in accumulated
	other comprehensive income:
	Net actuarial loss/(gain)		(324)	27	592	(191)	(156)	(1,375)	215	(555)	(589)
	Amortization of actuarial (loss)/gain		(1,047)	(811)	(1,043)	(495)	(538)	(752)	(96)	(153)	(206)
	Prior service cost/(credit)		-	-	-	111	32	(401)	-	-	(535)
	Amortization of prior service (cost)/credit		(5)	(6)	(6)	(47)	(54)	(87)	33	30	24
	Foreign exchange rate changes		-	-	-	559	(108)	(1,126)	8	5	(31)
Total recorded in other comprehensive income			(1,376)	(790)	(457)	(63)	(824)	(3,741)	160	(673)	(1,337)
Total recorded in net periodic benefit cost and
	other comprehensive income, before tax		483	904	1,411	847	270	(2,457)	645	(78)	(667)

Summary Of Change In Accumulated Other Comprehensive Income

		Total Pension and
		Other Postretirement Benefits
		2017	2016	2015
		(millions of dollars)
(Charge)/credit to other comprehensive income, before tax
	U.S. pension	1,376	790	457
	Non-U.S. pension	63	824	3,741
	Other postretirement benefits	(160)	673	1,337
Total (charge)/credit to other comprehensive income, before tax		1,279	2,287	5,535
(Charge)/credit to income tax (see Note 4)		(290)	(692)	(1,810)
(Charge)/credit to investment in equity companies		(43)	(16)	81
(Charge)/credit to other comprehensive income including noncontrolling
	interests, after tax	946	1,579	3,806
Charge/(credit) to equity of noncontrolling interests		12	24	(202)
(Charge)/credit to other comprehensive income attributable to ExxonMobil		958	1,603	3,604

Fair Value Of The Benefit Plan Assets (Pension)

			U.S. Pension						Non-U.S. Pension
			Fair Value Measurement						Fair Value Measurement
			at December 31, 2017, Using:						at December 31, 2017, Using:
							Net							Net
							Asset							Asset
			Level 1	Level 2		Level 3	Value (1)	Total	Level 1		Level 2		Level 3	Value (1)	Total
			(millions of dollars)
Asset category:
	Equity securities
		U.S.	-	-		-	1,665	1,665	-		-		-	2,967	2,967
		Non-U.S.	-	-		-	1,570	1,570	111	(2)	-		-	2,903	3,014
	Private equity		-	-		-	532	532	-		-		-	522	522
	Debt securities
		Corporate	-	5,260	(3)	-	1	5,261	-		131	(3)	-	5,215	5,346
		Government	-	3,604	(3)	-	2	3,606	237	(4)	32	(3)	-	9,056	9,325
		Asset-backed	-	-		-	1	1	-		34	(3)	-	72	106
	Cash		-	-		-	138	138	54		2	(5)	-	102	158
Total at fair value			-	8,864		-	3,909	12,773	402		199		-	20,837	21,438
	Insurance contracts
		at contract value						9							23
Total plan assets								12,782							21,461

(1)Per ASU 2015-07, certain instruments that are measured at fair value using the Net Asset Value (NAV) per share practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total value of plan assets.

(2) For non-U.S. equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges.

(3)For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.

(4)For government debt securities that are traded on active exchanges, fair value is based on observable quoted prices.

(5)For cash balances that are subject to withdrawal penalties or other adjustments, the fair value is treated as a Level 2 input.

			U.S. Pension						Non-U.S. Pension
			Fair Value Measurement						Fair Value Measurement
			at December 31, 2016, Using:						at December 31, 2016, Using:
							Net							Net
							Asset							Asset
			Level 1	Level 2		Level 3	Value (1)	Total	Level 1		Level 2		Level 3	Value (1)	Total
			(millions of dollars)
Asset category:
	Equity securities
		U.S.	-	-		-	2,347	2,347	-		-		-	3,343	3,343
		Non-U.S.	-	-		-	2,126	2,126	142	(2)	2	(3)	-	3,632	3,776
	Private equity		-	-		-	553	553	-		-		-	539	539
	Debt securities
		Corporate	-	4,978	(4)	-	1	4,979	-		123	(4)	-	4,075	4,198
		Government	-	2,635	(4)	-	1	2,636	167	(5)	32	(4)	-	6,753	6,952
		Asset-backed	-	3	(4)	-	1	4	-		35	(4)	-	72	107
	Cash		-	-		-	137	137	23		9	(6)	-	73	105
Total at fair value			-	7,616		-	5,166	12,782	332		201		-	18,487	19,020
	Insurance contracts
		at contract value						11							23
Total plan assets								12,793							19,043

(1) Per ASU 2015-07, certain instruments that are measured at fair value using the Net Asset Value (NAV) per share practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total value of plan assets.

(2) For non-U.S. equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges.

(3) For U.S. and non-U.S. equity securities held in the form of fund units that are redeemable at the measurement date, the published unit value is treated as a Level 2 input. The fair value of the securities owned by the funds is based on observable quoted prices on active exchanges, which are Level 1 inputs.

(4) For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.

(5) For government debt securities that are traded on active exchanges, fair value is based on observable quoted prices.

(6) 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
			Fair Value Measurement
			at December 31, 2017, Using:
								Net
								Asset
				Level 1	Level 2		Level 3	Value (1)	Total
				(millions of dollars)
Asset category:
	Equity securities
		U.S.		-	-		-	73	73
		Non-U.S.		-	-		-	55	55
	Private equity			-	-		-	-	-
	Debt securities
		Corporate		-	99	(2)	-	-	99
		Government		-	197	(2)	-	-	197
		Asset-backed		-	1	(2)	-	-	1
	Cash			-	-		-	2	2
Total at fair value				-	297		-	130	427

(1) Per ASU 2015-07, certain instruments that are measured at fair value using the Net Asset Value (NAV) per share practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total value of plan assets.

(2) For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.

			Other Postretirement
			Fair Value Measurement
			at December 31, 2016, Using:
								Net
								Asset
				Level 1	Level 2		Level 3	Value (1)	Total
			(millions of dollars)
Asset category:
	Equity securities
		U.S.		-	-		-	98	98
		Non-U.S.		-	-		-	71	71
	Private equity			-	-		-	-	-
	Debt securities
		Corporate		-	82	(2)	-	-	82
		Government		-	159	(2)	-	-	159
		Asset-backed		-	1	(2)	-	-	1
	Cash			-	-		-	-	-
Total at fair value				-	242		-	169	411

(1)Per ASU 2015-07, certain instruments that are measured at fair value using the Net Asset Value (NAV) per share practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total value of plan assets.

(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

		Pension Benefits
		U.S.			Non-U.S.
			2017	2016		2017	2016
		(millions of dollars)
For funded pension plans with an accumulated benefit obligation
	in excess of plan assets:
	Projected benefit obligation		16,739	17,099		3,384	837
	Accumulated benefit obligation		14,022	14,390		3,264	612
	Fair value of plan assets		12,782	12,793		3,219	564
For unfunded pension plans:
	Projected benefit obligation		2,571	2,861		6,915	6,365
	Accumulated benefit obligation		1,535	1,855		6,208	5,687

Estimated Next Year Amortization

					Other
			Pension Benefits		Postretirement
			U.S.	Non-U.S.	Benefits
		(millions of dollars)
Estimated 2018 amortization from accumulated other comprehensive income:
	Net actuarial loss/(gain) (1)		539	412		112
	Prior service cost (2)		5	47		(40)

(1) The Corporation amortizes the net balance of actuarial losses/(gains) as a component of net periodic benefit cost over the average remaining service period of active plan participants.

(2) The Corporation amortizes prior service cost on a straight-line basis as permitted under authoritative guidance for defined benefit pension and other postretirement benefit plans.

Expected Contributions and Benefit Payments for Pension Benefits And Other Postretirement Benefits

		Pension Benefits		Other Postretirement Benefits
					Medicare
		U.S.	Non-U.S.	Gross	Subsidy Receipt
		(millions of dollars)
Contributions expected in 2018		490	720	-		-
Benefit payments expected in:
	2018	1,364	1,183	459		25
	2019	1,279	1,163	465		26
	2020	1,267	1,197	469		28
	2021	1,268	1,203	470		29
	2022	1,285	1,220	468		30
	2023 - 2027	6,355	6,162	2,329		174

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Disclosures About Segments And Related Information (Tables)

12 Months Ended

Dec. 31, 2017

Disclosures About Segments And Related Information [Abstract]

Disclosures About Segments And Related Information

													Corporate
	Upstream				Downstream				Chemical					and	Corporate
	U.S.		Non-U.S.		U.S.		Non-U.S.		U.S.		Non-U.S.		Financing			Total
		(millions of dollars)
As of December 31, 2017
Earnings after income tax		6,622		6,733		1,948		3,649		2,190		2,328		(3,760)		19,710
Earnings of equity companies included above		216		3,618		118		490		90		1,217		(369)		5,380
Sales and other operating revenue		9,349		14,508		61,695		122,881		11,035		17,659		35		237,162
Intersegment revenue		5,729		22,935		14,857		22,263		7,270		5,550		208		-
Depreciation and depletion expense		6,963		9,741		658		883		299		504		845		19,893
Interest revenue		-		-		-		-		-		-		36		36
Interest expense		87		29		1		6		-		-		478		601
Income tax expense (benefit)		(8,552)		5,463		(61)		934		362		664		16		(1,174)
Effect of U.S. tax reform - noncash		(7,602)		480		(618)		-		(335)		-		2,133		(5,942)
Additions to property, plant and equipment		9,761		8,617		769		1,551		1,330		2,019		854		24,901
Investments in equity companies		4,680		14,494		276		1,462		341		3,387		(286)		24,354
Total assets		89,048		155,822		18,172		34,294		13,363		21,133		16,859		348,691
As of December 31, 2016
Earnings after income tax		(4,151)		4,347		1,094		3,107		1,876		2,739		(1,172)		7,840
Earnings of equity companies included above		53		3,359		58		404		111		1,188		(367)		4,806
Sales and other operating revenue(1)		7,552		12,278		52,630		102,756		9,944		15,447		21		200,628
Intersegment revenue		3,827		18,099		11,796		18,775		6,404		4,211		236		-
Depreciation and depletion expense		9,626		9,550		628		889		275		477		863		22,308
Interest revenue		-		-		-		-		-		-		30		30
Interest expense		17		29		1		8		-		-		398		453
Income tax expense (benefit)		(2,600)		1,818		396		951		693		609		(2,273)		(406)
Additions to property, plant and equipment		3,144		7,878		791		1,525		1,463		482		817		16,100
Investments in equity companies		4,917		11,364		111		1,255		158		3,247		(242)		20,810
Total assets		86,146		153,183		16,201		29,208		11,600		18,453		15,523		330,314
As of December 31, 2015
Earnings after income tax		(1,079)		8,180		1,901		4,656		2,386		2,032		(1,926)		16,150
Earnings of equity companies included above		226		5,831		170		444		144		1,235		(406)		7,644
Sales and other operating revenue(1)		8,241		15,446		69,706		119,050		10,879		16,524		8		239,854
Intersegment revenue		4,344		20,839		12,440		22,166		7,442		5,168		274		-
Depreciation and depletion expense		5,301		9,227		664		1,003		375		654		824		18,048
Interest revenue		-		-		-		-		-		-		46		46
Interest expense		26		27		8		4		-		1		245		311
Income tax expense (benefit)		(879)		4,703		866		1,325		646		633		(1,879)		5,415
Additions to property, plant and equipment		6,915		14,561		916		1,477		1,865		629		1,112		27,475
Investments in equity companies		5,160		10,980		95		1,179		125		3,025		(227)		20,337
Total assets		93,648		155,316		16,498		29,808		10,174		18,236		13,078		336,758

(1) Sales and other operating revenue excludes previously reported sales-based taxes of $17,980 million for 2016 and $19,634 million for 2015. See Note 2: Accounting Changes.

Geographic Sales And Other Operating Revenue

Geographic
Sales and other operating revenue(1)		2017	2016	2015
		(millions of dollars)
United States		82,079	70,126	88,826
Non-U.S.		155,083	130,502	151,028
	Total	237,162	200,628	239,854
Significant non-U.S. revenue sources include:
	Canada	20,116	17,682	19,076
	United Kingdom	16,611	15,452	20,605
	Belgium	13,633	10,834	12,481
	Singapore	11,589	9,919	10,632
	Italy	11,476	9,715	11,220
	France	11,235	9,487	10,631
	Germany	8,484	7,899	8,447

(1) Sales and other operating revenue excludes previously reported sales-based taxes of $17,980 million for 2016 and $19,634 million for 2015. See Note 2: Accounting Changes.

Schedule Of Long-Lived Assets By Geographic Regions

Long-lived assets		2017	2016	2015
		(millions of dollars)
United States		105,101	101,194	107,039
Non-U.S.		147,529	143,030	144,566
	Total	252,630	244,224	251,605
Significant non-U.S. long-lived assets include:
	Canada	41,138	40,144	39,775
	Australia	16,908	16,510	15,894
	Singapore	11,292	9,769	9,681
	Kazakhstan	10,121	10,325	9,705
	Nigeria	9,734	11,314	12,222
	Papua New Guinea	8,463	5,719	5,985
	Angola	7,689	8,413	8,777
	Russia	5,702	4,828	4,744

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Income And Other Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income And Other Taxes [Abstract]

Schedule Of Income And Other Taxes

						2017				2016				2015
				U.S.	Non-U.S.		Total	U.S.	Non-U.S.		Total	U.S.	Non-U.S.		Total
								(millions of dollars)
Income tax expense
	Federal and non-U.S.
		Current		577		6,633	7,210	(214)		4,056	3,842	-		7,126	7,126
		Deferred - net		(9,075)		754	(8,321)	(2,801)		(1,422)	(4,223)	(1,166)		(571)	(1,737)
	U.S. tax on non-U.S. operations			17		-	17	41		-	41	38		-	38
			Total federal and non-U.S.	(8,481)		7,387	(1,094)	(2,974)		2,634	(340)	(1,128)		6,555	5,427
	State			(80)		-	(80)	(66)		-	(66)	(12)		-	(12)
			Total income tax expense	(8,561)		7,387	(1,174)	(3,040)		2,634	(406)	(1,140)		6,555	5,415
All other taxes and duties
	Other taxes and duties			3,330		26,774	30,104	3,209		25,811	29,020	3,206		27,103	30,309
	Included in production and
		manufacturing expenses		1,107		747	1,854	1,052		808	1,860	1,157		828	1,985
	Included in SG&A expenses			147		354	501	133		362	495	150		390	540
		Total other taxes and duties		4,584		27,875	32,459	4,394		26,981	31,375	4,513		28,321	32,834
			Total	(3,977)		35,262	31,285	1,354		29,615	30,969	3,373		34,876	38,249

Sales-based taxes were previously reported gross on the income statement and included in total taxes in the above table. See Note 2: Accounting Changes.

Reconciliation Between Income Tax Expense And A Theoretical U.S. Tax

			2017	2016	2015
			(millions of dollars)
Income before income taxes
	United States		(754)	(5,832)	147
	Non-U.S.		19,428	13,801	21,819
		Total	18,674	7,969	21,966
Theoretical tax			6,536	2,789	7,688
Effect of equity method of accounting			(1,883)	(1,682)	(2,675)
Non-U.S. taxes in excess of/(less than) theoretical U.S. tax (1)			1,848	(582)	1,415
Effect of U.S. tax reform			(5,942)	-	-
Other (2)			(1,733)	(931)	(1,013)
		Total income tax expense	(1,174)	(406)	5,415
Effective tax rate calculation
Income taxes			(1,174)	(406)	5,415
ExxonMobil share of equity company income taxes			2,228	1,692	3,011
		Total income taxes	1,054	1,286	8,426
Net income including noncontrolling interests			19,848	8,375	16,551
		Total income before taxes	20,902	9,661	24,977
Effective income tax rate			5%	13%	34%

(1) 2016 includes a $227 million expense from an adjustment to deferred taxes and a $548 million benefit from an adjustment to a tax position in prior years.

(2) 2017 includes an exploration tax benefit of $708 million. 2016 includes an exploration tax benefit of $198 million and benefits from an adjustment to a prior year tax position of $176 million.

Deferred Tax Liabilities/(Assets)

Tax effects of temporary differences for:		2017	2016
		(millions of dollars)
Property, plant and equipment		36,559	46,744
Other liabilities		5,625	4,262
	Total deferred tax liabilities	42,184	51,006
Pension and other postretirement benefits		(4,338)	(6,053)
Asset retirement obligations		(4,237)	(5,454)
Tax loss carryforwards		(6,767)	(5,472)
Other assets		(5,832)	(5,615)
	Total deferred tax assets	(21,174)	(22,594)
Asset valuation allowances		2,565	1,509
	Net deferred tax liabilities	23,575	29,921

Deferred Income Tax (Assets) And Liabilities By Balance Sheet Classification

Balance sheet classification		2017	2016
		(millions of dollars)
Other assets, including intangibles, net		(3,318)	(4,120)
Deferred income tax liabilities		26,893	34,041
	Net deferred tax liabilities	23,575	29,921

Unrecognized Tax Benefits

Gross unrecognized tax benefits		2017	2016	2015
		(millions of dollars)
Balance at January 1		9,468	9,396	8,986
	Additions based on current year's tax positions	522	655	903
	Additions for prior years' tax positions	523	534	496
	Reductions for prior years' tax positions	(865)	(1,019)	(190)
	Reductions due to lapse of the statute of limitations	(113)	(7)	(4)
	Settlements with tax authorities	(782)	(70)	(725)
	Foreign exchange effects/other	30	(21)	(70)
Balance at December 31		8,783	9,468	9,396

Remaining Tax Years Subject To Examination By Major Tax Jurisdiction

Country of Operation	Open Tax Years
Abu Dhabi	2014 - 2017
Angola	2016 - 2017
Australia	2008 - 2017
Belgium	2015 - 2017
Canada	1998 - 2017
Equatorial Guinea	2007 - 2017
Indonesia	2007 - 2017
Iraq	2012 - 2017
Malaysia	2009 - 2017
Nigeria	2006 - 2017
Norway	2007 - 2017
Papua New Guinea	2008 - 2017
Russia	2015 - 2017
United Kingdom	2015 - 2017
United States	2006 - 2017

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Acquisitions (Tables)

12 Months Ended

Dec. 31, 2017

Business Combinations [Abstract]

Schedule Of Business Acquisitions By Acquisition

	IOC	Permian
	(billions of dollars)
Current assets	0.6	-
Property, plant and equipment	2.9	6.3
Other	0.6	-
Total assets	4.1	6.3
Current liabilities	0.5	-
Long-term liabilities	0.9	0.1
Total liabilities	1.4	0.1
Net assets acquired	2.7	6.2

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Accounting Changes (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Sales and other operating revenue	[1]	$ 237,162	$ 200,628	[2]	$ 239,854	[2]
Sales-based taxes	[2]		17,980		19,634
Other taxes and duties		$ 30,104	29,020		30,309
Previously Reported
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Sales and other operating revenue			218,608		259,488
Sales-based taxes			21,090		22,678
Other taxes and duties			25,910		27,265
Restatement Adjustment
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Sales and other operating revenue			(17,980)		(19,634)
Sales-based taxes			(21,090)		(22,678)
Other taxes and duties			$ 3,110		$ 3,044

[1] Effective December 31, 2017, the Corporation revised its accounting policy election related to sales-based taxes. See Note 2: Accounting Changes.

[2] Sales and other operating revenue excludes previously reported sales-based taxes of $17,980 million for 2016 and $19,634 million for 2015. See Note 2: Accounting Changes.

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Miscellaneous Financial Information (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Miscellaneous Financial Information [Abstract]
Research and development expense	$ 1,063	$ 1,058	$ 1,008
Foreign currency transaction gain/(loss), before tax	6	29	(119)
Gains/(losses) on combined effects of LIFO inventory accumulations and draw-downs	(10)	(295)	$ (186)
Aggregate replacement cost of inventories estimated to exceed LIFO carrying values	$ 10,800	$ 8,100

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Miscellaneous Financial Information (Crude Oil, Products And Merchandise) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Miscellaneous Financial Information [Abstract]
Crude oil	$ 4,600	$ 3,900
Petroleum products	4,300	3,700
Chemical products	3,300	2,800
Gas / other	700	500
Total	$ 12,871	$ 10,877

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Other Comprehensive Income Information (Schedule of Accumulated Other Comprehensive Income Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease [Abstract]
Current period change excluding amounts reclassified from accumulated other comprehensive income, Cumulative Foreign Exchange Translation Adjustment	$ 5,352	$ (174)	$ (9,303)
Amounts reclassified from accumulated other comprehensive income, Cumulative Foreign Exchange Translation Adjustment	234		(14)
Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease [Abstract]
Current period change excluding amounts reclassified from accumulated other comprehensive income, Postretirement Benefits Reserves Adjustment	(219)	493	2,358
Amounts reclassified from accumulated other comprehensive income, Postretirement Benefits Reserves Adjustment	1,165	1,086	1,448
Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease [Abstract]
Current period change excluding amounts reclassified from accumulated other comprehensive income, Unrealized Change in Stock Investments			33
Amounts reclassified from accumulated other comprehensive income, Unrealized Change in Stock Investments			27
Other Comprehensive Income Loss Net Of Tax Period Change [Abstract]
Beginning Balance, Total	(22,239)
Ending Balance, Total	(16,262)	(22,239)
Exxon Mobil Corporation Share After Noncontrolling Interest [Member]
Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease [Abstract]
Beginning Balance, Cumulative Foreign Exchange Translation Adjustment	(14,501)	(14,170)	(5,952)
Current period change excluding amounts reclassified from accumulated other comprehensive income, Cumulative Foreign Exchange Translation Adjustment	4,879	(331)	(8,204)
Amounts reclassified from accumulated other comprehensive income, Cumulative Foreign Exchange Translation Adjustment	140		(14)
Total change in accumulated other comprehensive income, Cumulative Foreign Exchange Translation Adjustment	5,019	(331)	(8,218)
Ending Balance, Cumulative Foreign Exchange Translation Adjustment	(9,482)	(14,501)	(14,170)
Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease [Abstract]
Beginning Balance, Postretirement Benefits Reserves Adjustment	(7,738)	(9,341)	(12,945)
Current period change excluding amounts reclassified from accumulated other comprehensive income, Postretirement Benefits Reserves Adjustment	(170)	552	2,202
Amounts reclassified from accumulated other comprehensive income, Postretirement Benefits Reserves Adjustment	1,128	1,051	1,402
Total change in accumulated other comprehensive income, Postretirement Benefits Reserves Adjustment	958	1,603	3,604
Ending Balance, Postretirement Benefits Reserves Adjustment	(6,780)	(7,738)	(9,341)
Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease [Abstract]
Beginning Balance, Unrealized Change in Stock Investments			(60)
Current period change excluding amounts reclassified from accumulated other comprehensive income, Unrealized Change in Stock Investments			33
Amounts reclassified from accumulated other comprehensive income, Unrealized Change in Stock Investments			27
Total change in accumulated other comprehensive income, Unrealized Change in Stock Investments			60
Other Comprehensive Income Loss Net Of Tax Period Change [Abstract]
Beginning Balance, Total	(22,239)	(23,511)	(18,957)
Current period change excluding amounts reclassified from accumulated other comprehensive income, Total	4,709	221	(5,969)
Amounts reclassified from accumulated other comprehensive income, Total	1,268	1,051	1,415
Total other comprehensive income	5,977	1,272	(4,554)
Ending Balance, Total	$ (16,262)	$ (22,239)	$ (23,511)

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Other Comprehensive Income Information (Amounts Reclassified Out Of Acc Other Comp Income) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Comprehensive Income Information Before Tax [Abstract]
Foreign exchange translation gain/(loss) included in net income (Statement of Income line: Other income)		$ (234)		$ 14
Amortization and settlement of postretirement benefits reserves adjustment included in net periodic benefit costs	[1]	$ (1,656)	$ (1,531)	(2,066)
Realized change in fair value of stock investments included in net income (Statement of Income line: Other income)				$ (42)

[1] These accumulated other comprehensive income components are included in the computation of net periodic pension cost. (See Note 17 – Pension and Other Postretirement Benefits for additional details.)

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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, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Comprehensive Income Information Tax [Abstract]
Foreign exchange translation adjustment	$ 67	$ 43	$ 170
Postretirement benefits reserves adjustment (excluding amortization)	201	(247)	(1,192)
Amortization and settlement of postretirement benefits reserves adjustment included in net periodic benefit costs	(491)	(445)	(618)
Unrealized change in fair value of stock investments			(17)
Realized change in fair value of stock investments included in net income			(15)
Total	$ (223)	$ (649)	$ (1,672)

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Cash Flow Information (Cash Payments For Interest And Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flow Information [Abstract]
Cash payments for interest	$ 1,132	$ 818	$ 586
Cash payments for income taxes	7,510	4,214	7,269
Proceeds from sales of assets	3,103	4,275	2,389
Asset Exchange [Member]
Asset exchanges, primarily noncash			500
Proceeds from sales of assets			100
Capital lease obligations incurred			1,000
Maturity Greater Than Three Months [Member]
Net cash flow from issuance/(repayment) of commercial paper	(121)	608	358
Proceeds from issuance of commercial paper	3,600	3,900	8,100
Repayments of commercial paper	$ 3,700	$ 3,300	$ 7,700

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Additional Working Capital Information (Narrative) (Details) - USD ($) $ in Billions	Dec. 31, 2017	Dec. 31, 2016
Line Of Credit Facility [Line Items]
Weighted-average interest rate on short-term borrowings outstanding	1.30%	0.60%
Short Term Financing [Member]
Line Of Credit Facility [Line Items]
Unused credit lines	$ 5.4

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Additional Working Capital Information (Schedule Of Notes, Accounts Receivable And Payable, Loans Payable, Accrued Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Notes and Accounts Receivable [Abstract]
Trade notes and accounts receivable, less reserves of $72 million and $75 million	$ 21,274	$ 16,033
Other notes and accounts receivable, less reserves of $539 million and $627 million	4,323	5,361
Total notes and accounts receivable	25,597	21,394
Trade notes and accounts receivable, reserves	72	75
Other notes and accounts receivable, reserves	539	627
Notes And Loans Payable [Abstract]
Bank loans	115	143
Commercial paper	13,049	10,727
Long-term debt due within one year	4,766	2,960
Total notes and loans payable	17,930	13,830
Accounts Payable And Accrued Liabilities Current [Abstract]
Trade payables	21,701	17,801
Payables to equity companies	5,453	4,748
Accrued taxes other than income taxes	3,311	2,653
Other accounts payable and accrued liabilities	6,331	5,991
Total accounts payable and accrued liabilities	$ 36,796	$ 31,193

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Equity Company Information (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($) Projects	Dec. 31, 2016	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Share of equity company sales revenues from sales to consolidated companies	15.00%	14.00%	15.00%
Rosneft Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
After-tax loss from Rosneft JV's	$ 200
Expected Date of Withdrawal from Rosneft JV	2018
Mozambique Rovuma Venture SpA [Member]
Schedule of Equity Method Investments [Line Items]
Indirect Interest In Mozambique Properties	25.00%
Investment to acquire shares in Mozambique	$ 3,000
Number of JV companies | Projects	4
Date of acquisition	Dec. 13, 2017

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Equity Company Information (Schedule Of Equity Company Financial Summary) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Investments (Companies carried at equity in underlying assets)	$ 24,354	$ 20,810	$ 20,337
Total Equity Company Including All Owners [Member]
Schedule of Equity Method Investments [Line Items]
Total revenues	94,791	80,247	111,866
Income before income taxes	29,748	22,269	36,379
Income taxes	8,421	6,334	11,048
Income from equity affiliates	21,327	15,935	25,331
Current assets	35,367	34,412	32,879
Long-term assets	122,221	109,646	109,684
Total assets	157,588	144,058	142,563
Current liabilities	21,725	20,507	22,947
Long-term liabilities	59,736	62,110	60,388
Investments (Companies carried at equity in underlying assets)	76,127	61,441	59,228
Exxon Mobil Corporation Share After Noncontrolling Interest [Member]
Schedule of Equity Method Investments [Line Items]
Total revenues	29,340	24,668	34,297
Income before income taxes	8,498	6,509	10,670
Income taxes	2,236	1,701	3,019
Income from equity affiliates	6,262	4,808	7,651
Current assets	12,050	11,392	11,244
Long-term assets	34,931	32,357	32,878
Total assets	46,981	43,749	44,122
Current liabilities	6,348	5,765	6,738
Long-term liabilities	17,056	17,288	17,165
Investments (Companies carried at equity in underlying assets)	$ 23,577	$ 20,696	$ 20,219

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Equity Company Information (Schedule Of The Corporation's Percentage Ownership Interest) (Details)	Dec. 31, 2017
Upstream [Member] | Aera Energy LLC [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	48.00%
Upstream [Member] | Barzan Gas Company Limited [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	7.00%
Upstream [Member] | BEB Erdgas und Erdoel GmbH & Co. KG [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	50.00%
Upstream [Member] | Cameroon Oil Transportation Company S.A. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	41.00%
Upstream [Member] | Cross Timbers Energy, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	50.00%
Upstream [Member] | Golden Pass LNG Terminal LLC [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	18.00%
Upstream [Member] | Marine Well Containment Company LLC [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	10.00%
Upstream [Member] | Mozambique Rovuma Venture, S.p.A. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	36.00%
Upstream [Member] | Nederlandse Aardolie Maatschappij B.V. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	50.00%
Upstream [Member] | Qatar Liquefied Gas Company Limited (2) [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	24.00%
Upstream [Member] | Ras Laffan Liquefied Natural Gas Company Limited [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	25.00%
Upstream [Member] | Ras Laffan Liquefied Natural Gas Company Limited (II) [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	31.00%
Upstream [Member] | Ras Laffan Liquefied Natural Gas Company Limited (3) [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	30.00%
Upstream [Member] | South Hook LNG Terminal Company Limited [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	24.00%
Upstream [Member] | Tengizchevroil, LLP [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	25.00%
Upstream [Member] | Terminale GNL Adriatico S.r.l. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	71.00%
Downstream [Member] | Fujian Refining & Petrochemical Co. Ltd. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	25.00%
Downstream [Member] | Permian Express Partners LLC [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	12.00%
Downstream [Member] | Saudi Aramco Mobil Refinery Company Ltd. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	50.00%
Chemical [Member] | Al-Jubail Petrochemical Company [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	50.00%
Chemical [Member] | Infineum Italia s.r.l. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	50.00%
Chemical [Member] | Infineum Singapore Pte. Ltd. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	50.00%
Chemical [Member] | Infineum USA L.P. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	50.00%
Chemical [Member] | Saudi Yanbu Petrochemical Co. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership interest	50.00%

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Investments, Advances And Long-Term Receivables (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Investments, Advances And Long-Term Receivables [Abstract]
Investments (Companies carried at equity in underlying assets)	$ 24,354	$ 20,810	$ 20,337
Advances (Companies carried at equity in underlying assets)	9,112	9,443
Total equity company investments and advances	33,466	30,253
Companies carried at cost or less and stock investments carried at fair value	174	154
Long-term receivables and miscellaneous investments at cost or less, net of reserves of $5,432 million and $4,141 million	5,520	4,695
Total	39,160	35,102
Reserves for long-term receivables and miscellaneous investments	$ 5,432	$ 4,141

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Property, Plant And Equipment And Asset Retirement Obligations (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Accumulated depreciation and depletion	$ 224,555	$ 209,691
Interest capitalized	749	708	$ 482
Long-term asset retirement obligations	11,928	$ 12,352
U.S. [Member]
Property, Plant and Equipment [Line Items]
Asset impairment charges, before-tax	800
Non-U.S. [Member]
Property, Plant and Equipment [Line Items]
Asset impairment charges, before-tax	900
Other asset impairment charges, before-tax	$ 300
Fair Value Inputs Level 3 [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Fair value inputs, discount rate	5.50%
Fair Value Inputs Level 3 [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Fair value inputs, discount rate	8.00%

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Property, Plant And Equipment And Asset Retirement Obligations (Property, Plant And Equipment) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, plant and equipment, cost	$ 477,185	$ 453,915
Property, plant and equipment, net	252,630	244,224	$ 251,605
Upstream [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, cost	371,904	355,265
Property, plant and equipment, net	200,291	195,904
Downstream [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, cost	50,343	47,915
Property, plant and equipment, net	21,732	20,588
Chemical [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, cost	37,966	34,098
Property, plant and equipment, net	20,117	17,401
Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, cost	16,972	16,637
Property, plant and equipment, net	$ 10,490	$ 10,331

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Property, Plant And Equipment And Asset Retirement Obligations (Asset Retirement Obligations) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Property, Plant And Equipment And Asset Retirement Obligations [Abstract]
Beginning balance	$ 13,243	$ 13,704
Accretion expense and other provisions	780	740
Reduction due to property sales	(906)	(134)
Payments made	(730)	(549)
Liabilities incurred	128	204
Foreign currency translation	611	(513)
Revisions	(421)	(209)
Ending balance	$ 12,705	$ 13,243

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Accounting For Suspended Exploratory Well Costs (Narrative) (Details) $ in Millions	Dec. 31, 2017 USD ($) Projects	Dec. 31, 2016 USD ($) Projects	Dec. 31, 2015 USD ($) Projects	Dec. 31, 2014 USD ($)
Exploratory Wells Drilled [Line Items]
Number of projects that have exploratory well costs capitalized for a period of greater than one year	46	58	55
Number of projects that have drilling in the preceding twelve months or exploratory activity planned in the next two years as of December 31, 2017	10
Number of projects with completed exploratory activity progressing toward development as of December 31, 2017	36
Capitalized exploratory well costs | $	$ 3,700	$ 4,477	$ 4,372	$ 3,587
36 Projects [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs | $	$ 1,639

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Accounting For Suspended Exploratory Well Costs (Change In Capitalized Suspended Exploratory Well Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounting For Suspended Exploratory Well Costs [Abstract]
Capitalized suspended exploratory well costs, beginning balance	$ 4,477	$ 4,372	$ 3,587
Additions pending the determination of proved reserves	906	180	847
Charged to expense	(1,205)	(111)	(5)
Reclassifications to wells, facilities and equipment based on the determination of proved reserves	(497)		(43)
Divestments/Other	19	36	(14)
Capitalized suspended exploratory well costs, ending balance	3,700	4,477	4,372
Ending balance attributed to equity companies included above	$ 306	$ 707	$ 696

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Accounting For Suspended Exploratory Well Costs (Schedule Of Period End Capitalized Suspended Exploratory Well Costs) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]
Capitalized for a period of one year or less	$ 906	$ 180	$ 847
Capitalized for a period greater than one year - subtotal	2,794	4,297	3,525
Capitalized suspended exploratory well costs, total	3,700	4,477	4,372	$ 3,587
Capitalized For A Period Of Between One And Five Years [Member]
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]
Capitalized for a period greater than one year - subtotal	1,345	2,981	2,386
Capitalized For A Period Of Between Five And Ten Years [Member]
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]
Capitalized for a period greater than one year - subtotal	1,064	911	826
Capitalized For A Period Of Greater Than Ten Years [Member]
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]
Capitalized for a period greater than one year - subtotal	$ 385	$ 405	$ 313

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Accounting For Suspended Exploratory Well Costs (Schedule Of Number Of Projects With Suspended Exploratory Well Costs) (Details) - Projects	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounting For Suspended Exploratory Well Costs [Abstract]
Number of projects that only have exploratory well costs capitalized for a period of one year or less	11	2	4
Number of projects that have exploratory well costs capitalized for a period of greater than one year	46	58	55
Total	57	60	59

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Accounting For Suspended Exploratory Well Costs (Schedule Of Additional Detail For The Projects) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 3,700	$ 4,477	$ 4,372	$ 3,587
36 Projects [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	1,639
Angola [Member] | Project in Angola - AB32 Central NE Hub [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 69
Angola [Member] | Project in Angola - AB32 Central NE Hub [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2006
Angola [Member] | Project in Angola - AB32 Central NE Hub [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2014
Angola [Member] | Project In Angola - Kaombo Split Hub Phase 2[Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 20
Angola [Member] | Project In Angola - Kaombo Split Hub Phase 2[Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2005
Angola [Member] | Project In Angola - Kaombo Split Hub Phase 2[Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2006
Angola [Member] | Project In Angola - Perpetua-Zinia- Acacia [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 15
Angola [Member] | Project In Angola - Perpetua-Zinia- Acacia [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2008
Angola [Member] | Project In Angola - Perpetua-Zinia- Acacia [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2009
Argentina [Member] | Project in Argentina - La Invernada [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 72
Argentina [Member] | Project in Argentina - La Invernada [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2014
Argentina [Member] | Project in Argentina - La Invernada [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2014
Australia [Member] | Project In Australia - East Pilchard [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 8
Australia [Member] | Project In Australia - East Pilchard [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2001
Australia [Member] | Project In Australia - East Pilchard [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2001
Australia [Member] | Project In Australia - SE Longtom [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 12
Australia [Member] | Project In Australia - SE Longtom [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2010
Australia [Member] | Project In Australia - SE Longtom [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2010
Australia [Member] | Project in Australia - SE Remora [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 36
Australia [Member] | Project in Australia - SE Remora [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2010
Australia [Member] | Project in Australia - SE Remora [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2010
Indonesia [Member] | Project in Indonesia - Kedung Keris [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 11
Indonesia [Member] | Project in Indonesia - Kedung Keris [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2011
Indonesia [Member] | Project in Indonesia - Kedung Keris [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2011
Iraq [Member] | Project in Iraq - Kurdistan Pirmam
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 109
Iraq [Member] | Project in Iraq - Kurdistan Pirmam | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2015
Iraq [Member] | Project in Iraq - Kurdistan Pirmam | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2015
Kazakhstan [Member] | Project In Kazakhstan - Kairan [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 53
Kazakhstan [Member] | Project In Kazakhstan - Kairan [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2004
Kazakhstan [Member] | Project In Kazakhstan - Kairan [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2007
Kazakhstan [Member] | Project in Kazakhstan - Kalamkas
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 18
Kazakhstan [Member] | Project in Kazakhstan - Kalamkas | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2006
Kazakhstan [Member] | Project in Kazakhstan - Kalamkas | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2009
Malaysia [Member] | Project in Malaysia - Bindu [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 2
Malaysia [Member] | Project in Malaysia - Bindu [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	1995
Malaysia [Member] | Project in Malaysia - Bindu [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	1995
Nigeria [Member] | Project In Nigeria - Bolia [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 15
Nigeria [Member] | Project In Nigeria - Bolia [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2002
Nigeria [Member] | Project In Nigeria - Bolia [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2006
Nigeria [Member] | Project In Nigeria - Bosi [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 79
Nigeria [Member] | Project In Nigeria - Bosi [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2002
Nigeria [Member] | Project In Nigeria - Bosi [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2006
Nigeria [Member] | Project in Nigeria - Bosi Central [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 16
Nigeria [Member] | Project in Nigeria - Bosi Central [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2006
Nigeria [Member] | Project in Nigeria - Bosi Central [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2006
Nigeria [Member] | Project in Nigeria - Erha Northeast [Member}
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 26
Nigeria [Member] | Project in Nigeria - Erha Northeast [Member} | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2008
Nigeria [Member] | Project in Nigeria - Erha Northeast [Member} | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2008
Nigeria [Member] | Project In Nigeria - OML 138 Ukot SW [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 41
Nigeria [Member] | Project In Nigeria - OML 138 Ukot SW [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2014
Nigeria [Member] | Project In Nigeria - OML 138 Ukot SW [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2014
Nigeria [Member] | Project In Nigeria - OML 138 Ukot SS [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 13
Nigeria [Member] | Project In Nigeria - OML 138 Ukot SS [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2015
Nigeria [Member] | Project In Nigeria - OML 138 Ukot SS [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2015
Nigeria [Member] | Project In Nigeria - Pegi [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 32
Nigeria [Member] | Project In Nigeria - Pegi [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2009
Nigeria [Member] | Project In Nigeria - Pegi [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2009
Nigeria [Member] | Project in Nigeria - Satellite Field Development Phase 2 [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 12
Nigeria [Member] | Project in Nigeria - Satellite Field Development Phase 2 [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2013
Nigeria [Member] | Project in Nigeria - Satellite Field Development Phase 2 [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2013
Nigeria [Member] | Other 3 Projects In Nigeria [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 7
Nigeria [Member] | Other 3 Projects In Nigeria [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2002
Nigeria [Member] | Other 3 Projects In Nigeria [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2002
Norway [Member] | Project in Norway - Gamma [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 14
Norway [Member] | Project in Norway - Gamma [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2008
Norway [Member] | Project in Norway - Gamma [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2009
Norway [Member] | Project In Norway - Lavrans [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 16
Norway [Member] | Project In Norway - Lavrans [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	1995
Norway [Member] | Project In Norway - Lavrans [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	1999
Norway [Member] | Other 7 Projects In Norway [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 27
Norway [Member] | Other 7 Projects In Norway [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2008
Norway [Member] | Other 7 Projects In Norway [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2014
Papua New Guinea [Member] | Project In Papua New Guinea - Juha [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 28
Papua New Guinea [Member] | Project In Papua New Guinea - Juha [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2007
Papua New Guinea [Member] | Project In Papua New Guinea - Juha [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2007
Republic of Congo [Member] | Project In Republic of Congo - Mer Tres Profonde Sud [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 56
Republic of Congo [Member] | Project In Republic of Congo - Mer Tres Profonde Sud [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2000
Republic of Congo [Member] | Project In Republic of Congo - Mer Tres Profonde Sud [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2007
Romania [Member] | Project in Romania - Neptun Deep
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 536
Romania [Member] | Project in Romania - Neptun Deep | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2012
Romania [Member] | Project in Romania - Neptun Deep | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2016
Vietnam [Member] | Project in Vietnam - Blue Whale [Member]
Exploratory Wells Drilled [Line Items]
Capitalized exploratory well costs	$ 296
Vietnam [Member] | Project in Vietnam - Blue Whale [Member] | Minimum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2011
Vietnam [Member] | Project in Vietnam - Blue Whale [Member] | Maximum [Member]
Exploratory Wells Drilled [Line Items]
Years wells drilled, period	2015

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Leased Facilities (Narrative) (Details) $ in Millions	Dec. 31, 2017 USD ($)
Leased Facilities [Abstract]
Lease payments under minimum commitments, total	$ 4,290
Estimated related rental income from noncancelable subleases	$ 36

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Leased Facilities (Leased Facilities) (Details) $ in Millions	Dec. 31, 2017 USD ($)
Operating Leased Assets [Line Items]
Lease Payments Under Minimum Commitments, 2018	$ 936
Lease Payments Under Minimum Commitments, 2019	668
Lease Payments Under Minimum Commitments, 2020	498
Lease Payments Under Minimum Commitments, 2021	367
Lease Payments Under Minimum Commitments, 2022	300
Lease Payments Under Minimum Commitments, 2023 and beyond	1,521
Lease Payments Under Minimum Commitments, Total	4,290
Drilling Rigs and Related Equipment [Member]
Operating Leased Assets [Line Items]
Lease Payments Under Minimum Commitments, 2018	169
Lease Payments Under Minimum Commitments, 2019	131
Lease Payments Under Minimum Commitments, 2020	101
Lease Payments Under Minimum Commitments, 2021	70
Lease Payments Under Minimum Commitments, 2022	41
Lease Payments Under Minimum Commitments, 2023 and beyond	99
Lease Payments Under Minimum Commitments, Total	611
Other [Member]
Operating Leased Assets [Line Items]
Lease Payments Under Minimum Commitments, 2018	767
Lease Payments Under Minimum Commitments, 2019	537
Lease Payments Under Minimum Commitments, 2020	397
Lease Payments Under Minimum Commitments, 2021	297
Lease Payments Under Minimum Commitments, 2022	259
Lease Payments Under Minimum Commitments, 2023 and beyond	1,422
Lease Payments Under Minimum Commitments, Total	$ 3,679

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Leased Facilities (Net Rental Cost) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating Leased Assets [Line Items]
Rental cost	$ 2,618	$ 3,091	$ 3,929
Drilling Rigs and Related Equipment [Member]
Operating Leased Assets [Line Items]
Rental cost	792	1,274	1,853
Other [Member]
Operating Leased Assets [Line Items]
Rental cost	$ 1,826	$ 1,817	$ 2,076

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Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings per common share
Net income attributable to ExxonMobil		$ 19,710	$ 7,840	$ 16,150
Weighted average number of common shares outstanding		4,256	4,177	4,196
Earnings per common share (dollars)	[1]	$ 4.63	$ 1.88	$ 3.85
Dividends paid per common share (dollars)		$ 3.06	$ 2.98	$ 2.88

[1] The earnings per common share and earnings per common share - assuming dilution are the same in each period shown.

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Financial Instruments And Derivatives (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financial Instruments And Derivatives [Line Items]
Estimated fair value of total long-term debt, excluding capitalized lease obligations	$ 23,700	$ 28,000
Recorded book values of total long-term debt, excluding capitalized lease obligations	23,100	27,700
Derivative liability at fair value, net	38	22
Gain (loss) before-tax earnings impact of derivatives	(99)	$ (81)	$ 39
Level 1 [Member]
Financial Instruments And Derivatives [Line Items]
Estimated fair value of total long-term debt, excluding capitalized lease obligations	23,529
Level 2 [Member]
Financial Instruments And Derivatives [Line Items]
Estimated fair value of total long-term debt, excluding capitalized lease obligations	170
Level 3 [Member]
Financial Instruments And Derivatives [Line Items]
Estimated fair value of total long-term debt, excluding capitalized lease obligations	$ 6

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Long-Term Debt (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Long-term Debt [Line Items]
Long Term Debt In US Dollars	$ 23,736
U.S. dollar equivalent at year-end exchange rates of amounts payable in foreign currencies	670
Portion of long-term debt included in current liability	4,766	$ 2,960
Long-term debt maturing - 2019	4,045
Long-term debt maturing - 2020	1,617
Long-term debt maturing - 2021	2,549
Long-term debt maturing - 2022	1,835
Long Term Financing [Member]
Long-term Debt [Line Items]
Unused credit lines	$ 200

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Long-Term Debt (Summarized Long-Term Debt) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Long-term Debt [Line Items]
Debt issuance costs		$ (55)	$ (69)
Long-term debt		24,406	28,932
XTO Energy Inc. [Member]
Long-term Debt [Line Items]
Debt instrument, unamortized premium		102	138
Combined Exxon Mobil And Affiliates [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Other long-term debt		162	103
Combined Exxon Mobil And Affiliates [Member] | Other Foreign Currency Obligations [Member]
Long-term Debt [Line Items]
Other long-term debt		34	57
1.305% Notes Due 2018 [Member] | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent			$ 1,600
Debt maturity			Mar. 06, 2018
1.439% Notes Due 2018 [Member] | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent			$ 1,000
Debt maturity			Mar. 01, 2018
Floating-Rate Notes Due 2018 (Issued 2016) [Member] | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent			$ 750
Debt maturity			Feb. 28, 2018
Floating-Rate Notes Due 2018 (Issued 2015) [Member] | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent			$ 500
Debt maturity			Mar. 01, 2018
1.819% Notes Due 2019 [Member] | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent		$ 1,750	$ 1,750
Interest rate		1.819%
Debt maturity		Mar. 15, 2019	Mar. 15, 2019
1.708% Notes Due 2019 [Member] | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent		$ 1,250	$ 1,250
Interest rate		1.708%
Debt maturity		Mar. 01, 2019	Mar. 01, 2019
Floating-Rate Notes Due 2019 (Issued 2014) [Member] | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent		$ 500	$ 500
Debt maturity		Mar. 15, 2019	Mar. 15, 2019
Average effective interest rate	[1]	1.345%
Floating-Rate Notes Due 2019 (Issued 2016) [Member] | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent		$ 250	$ 250
Debt maturity		Mar. 01, 2019	Mar. 01, 2019
Average effective interest rate	[1]	1.953%
1.912% Notes Due 2020 [Member] | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent		$ 1,500	$ 1,500
Interest rate		1.912%
Debt maturity		Mar. 06, 2020	Mar. 06, 2020
2.222% Notes Due 2021 [Member] | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent		$ 2,500	$ 2,500
Interest rate		2.222%
Debt maturity		Mar. 01, 2021	Mar. 01, 2021
2.397% Notes Due 2022 [Member] | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent		$ 1,150	$ 1,150
Interest rate		2.397%
Debt maturity		Mar. 06, 2022	Mar. 06, 2022
Floating-Rate Notes Due 2022 [Member] | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent		$ 500	$ 500
Debt maturity		Mar. 06, 2022	Mar. 06, 2022
Average effective interest rate	[1]	1.557%
2.726% Notes Due 2023 [Member] | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent		$ 1,250	$ 1,250
Interest rate		2.726%
Debt maturity		Mar. 01, 2023	Mar. 01, 2023
3.176% Notes Due 2024 [Member] | Exxon Mobil Corporation [Member] | Other U.S. Dollar Obligations [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent		$ 1,000	$ 1,000
Interest rate		3.176%
Debt maturity		Mar. 15, 2024	Mar. 15, 2024
2.709% Notes Due 2025 [Member] | 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%
Debt maturity		Mar. 06, 2025	Mar. 06, 2025
3.043% Notes Due 2026 [Member] | 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%
Debt maturity		Mar. 01, 2026	Mar. 01, 2026
3.567% Notes Due 2045 [Member] | 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%
Debt maturity		Mar. 06, 2045	Mar. 06, 2045
4.114% Notes Due 2046 [Member] | 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%
Debt maturity		Mar. 01, 2046	Mar. 01, 2046
5.500% Senior Notes Due 2018 [Member] | XTO Energy Inc. [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent			$ 371
Debt maturity			Jun. 15, 2018
6.500% Senior Notes Due 2018 [Member] | XTO Energy Inc. [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent			$ 453
Debt maturity			Dec. 15, 2018
6.100% Senior Notes Due 2036 [Member] | XTO Energy Inc. [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent		$ 195	$ 197
Interest rate		6.10%
Debt maturity		Apr. 01, 2036	Apr. 01, 2036
6.750% Senior Notes Due 2037 [Member] | XTO Energy Inc. [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent		$ 302	$ 304
Interest rate		6.75%
Debt maturity		Aug. 01, 2037	Aug. 01, 2037
6.375% Senior Notes Due 2038 [Member] | XTO Energy Inc. [Member]
Long-term Debt [Line Items]
Senior notes, noncurrent		$ 232	$ 233
Interest rate		6.375%
Debt maturity		Jun. 15, 2038	Jun. 15, 2038
8.625% Debentures Due 2021 [Member] | Mobil Corporation [Member]
Long-term Debt [Line Items]
Other long-term debt		$ 250	$ 249
Interest rate		8.625%
Debt maturity		Aug. 15, 2021	Aug. 15, 2021
Industrial Revenue Bonds Due 2019-2051 [Member] | Combined Exxon Mobil And Affiliates [Member]
Long-term Debt [Line Items]
Other long-term debt		$ 2,559	$ 2,559
Debt instrument, maturity date range, start		Nov. 01, 2019	Nov. 01, 2019
Debt instrument, maturity date range, end		Dec. 01, 2051	Dec. 01, 2051
Average effective interest rate	[1]	0.764%
Capital Lease Obligations [Member] | Combined Exxon Mobil And Affiliates [Member]
Long-term Debt [Line Items]
Average effective interest rate	[1]	8.504%
Long-term debt		$ 1,327	$ 1,225

[1] Average effective interest rate for debt and average imputed interst rate for capital leases at December 31, 2017.

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Incentive Program (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Minimum ownership of affiliates needed for awards	50.00%
Number of shares issuable under 2003 incentive program, maximum	220,000,000
Remaining shares available for award under 2003 incentive program	89,000,000
Options and stock appreciation rights grant, minimum percentage of market value, date of grant	100.00%
Share-based compensation arrangement by share-based payment award expiration period	10 years
Restricted Stock [Member]
Long-term incentive awards	8,916,000	9,583,000	9,681,000
Unrecognized compensation cost	$ 2,049
Unrecognized compensation cost, weighted-average period of recognition, years	4 years 6 months
Compensation cost charged against income	$ 856	$ 880	$ 855
Income tax benefit recognized in income	78	80	78
Fair value of shares/awards vested	826	851	808
Cash payments, vested restricted stock units	$ 64	$ 67	$ 64
Percent of the shares in each award vesting after three years	50.00%
Percent of the shares in each award vesting after seven years	50.00%
Percent of shares in each award vesting after five years	50.00%
Percent of shares in each award vesting in later of ten years or retirement	50.00%
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]
Vesting Period	10 years

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Incentive Program (Summary Of Restricted Stock And Units Outstanding) (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2017 $ / shares shares
Incentive Program [Abstract]
Issued and outstanding at January 1, Restricted stock, Shares | shares	43,833
2016 award issued in 2017, Shares | shares	9,582
Vested, Shares | shares	(10,136)
Forfeited, Shares | shares	(2,201)
Issued and outstanding at December 31, Restricted stock, Shares | shares	41,078
Issued and outstanding at January 1, Weighted Average Grant-Date Fair Value per Share | $ / shares	$ 84.43
2016 award issued in 2017, Weighted Average Grant-Date Fair Value per Share | $ / shares	87.7
Vested, Weighted Average Grant-Date Fair Value per Share | $ / shares	80.71
Forfeited, Weighted Average Grant-Date Fair Value per Share | $ / shares	80.11
Issued and outstanding at December 31, Weighted Average Grant-Date Fair Value per Share | $ / shares	$ 86.34

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Incentive Program (Grant Value Of Restricted Stock And Units) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant price, per share	$ 81.89	$ 87.7	$ 81.27
Restricted stock and units settled in stock	$ 667	$ 771	$ 727
Units settled in cash	63	69	60
Total value	$ 730	$ 840	$ 787

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Litigation And Other Contingencies (Narrative) (Details) - USD ($)	Mar. 09, 2017	Oct. 09, 2014	Oct. 24, 2011	Jun. 27, 2007	May 01, 2007
Mobil Cerro Negro, Ltd. (MCN) [Member] | Expropriation of Assets [Member]
Loss Contingencies [Line Items]
Percentage ownership interest in Cerro Negro Project				41.67%	41.67%
Interest compounded annually from date of expropriation until date of payment in full		3.25%
Final award related to Cerro Negro arbitration		$ 1,600,000,000
Earlier Cerro Negro award for breach of contractual obligations		$ 908,000,000
Annulled portion of award for Cerro Negro Project	$ 1,400,000,000
Retained portion of award for Cerro Negro Project	260,000,000
Portion of award agreed to be paid by Venezuela for Cerro Negro Project	$ 260,000,000
Production Sharing Contract (PSC) [Member]
Loss Contingencies [Line Items]
Percent interest in Erha block PSC			56.25%
Pending Or Threatened Litigation [Member]
Loss Contingencies [Line Items]
Amount of award relating to excess lifting of crude oil			$ 1,800,000,000
Accrued interest relating to award for excess lifting of crude oil			$ 234,000,000

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Litigation And Other Contingencies (Schedule Of Guarantees) (Details) $ in Millions	Dec. 31, 2017 USD ($)
Loss Contingencies [Line Items]
Guarantees	$ 6,073
Equity Company Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	1,289	[1]
Other Third-Party Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	4,784
Debt-Related Guarantees [Member]
Loss Contingencies [Line Items]
Guarantees	368
Debt-Related Guarantees [Member] | Equity Company Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	98	[1]
Debt-Related Guarantees [Member] | Other Third-Party Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	270
Other Guarantees [Member]
Loss Contingencies [Line Items]
Guarantees	5,705
Other Guarantees [Member] | Equity Company Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	1,191	[1]
Other Guarantees [Member] | Other Third-Party Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	$ 4,514

[1] ExxonMobil share

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Pension And Other Postretirement Benefits (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate	4.50%
Year that rate reaches ultimate trend rate	2019
Effect of one-percentage-point increase on service and interest costs	$ 72
Effect of one-percentage-point increase on postretirement benefit obligation	696
Effect of one-percentage-point decrease on service and interest costs	53
Effect of one-percentage-point decrease on postretirement benefit obligation	536
Costs for defined contribution plans	$ 384	$ 399	$ 405
U.S. [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	30.00%
U.S. [Member] | Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	70.00%
U.S. [Member] | Venture Capital Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	5.00%
Pension Benefits - Non-U.S. [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	30.00%
Pension Benefits - Non-U.S. [Member] | Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	70.00%
Pension Benefits - Non-U.S. [Member] | Venture Capital Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	3.00%

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Pension And Other Postretirement Benefits (Benefit Obligations And Plan Assets Associated With Principal Benefit Plans) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Medicare subsidy receipts		$ 16	$ 22
U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate		3.80%	4.25%
Long-term rate of compensation increase		5.75%	5.75%
Benefit obligation at January 1		$ 19,960	$ 19,583
Service cost		784	810	$ 864
Interest cost		798	793	785
Defined benefit plan, actuarial net (gains) losses		733	250
Amendments, divestments and other		(1)
Benefit obligation at December 31		19,310	19,960	19,583
Accumulated benefit obligation at December 31		$ 15,557	$ 16,245
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate		2.80%	3.00%
Long-term rate of compensation increase		4.30%	4.00%
Benefit obligation at January 1		$ 25,196	$ 25,117
Service cost		596	585	689
Interest cost		772	844	850
Defined benefit plan, actuarial net (gains) losses		250	1,409
Foreign exchange rate changes		2,484	(1,520)
Amendments, divestments and other		(44)	(11)
Benefit obligation at December 31		27,963	25,196	25,117
Accumulated benefit obligation at December 31		$ 25,557	$ 22,867
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate		3.80%	4.25%
Long-term rate of compensation increase		5.75%	5.75%
Benefit obligation at January 1		$ 7,800	$ 8,282
Service cost		129	153	170
Interest cost		317	344	346
Defined benefit plan, actuarial net (gains) losses		231	(560)
Foreign exchange rate changes		40	16
Amendments, divestments and other		126	102
Benefit obligation at December 31		8,100	7,800	$ 8,282
Benefit Payments For Funded And Unfunded Plans [Member] | U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefits paid	[1],[2]	(2,964)	(1,476)
Benefit Payments For Funded And Unfunded Plans [Member] | Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefits paid	[1],[2]	(1,291)	(1,228)
Benefit Payments For Funded And Unfunded Plans [Member] | Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefits paid	[1],[2]	$ (543)	$ (537)

[1] Benefit payments for funded and unfunded plans.

[2] For 2017 and 2016, other postretirement benefits paid are net of $16 million and $22 million of Medicare subsidy receipts, respectively.

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Pension And Other Postretirement Benefits (Change In Plan Assets Of Pension And Other Postretirement Benefits) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value at January 1		$ 12,793	$ 10,985
Actual return on plan assets		1,831	949
Company contribution		619	2,068
Fair value at December 31		12,782	12,793
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value at January 1		19,043	18,417
Actual return on plan assets		1,442	2,443
Foreign exchange rate changes		1,776	(1,452)
Company contribution		440	492
Other		(338)
Fair value at December 31		21,461	19,043
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value at January 1		411	414
Actual return on plan assets		40	20
Company contribution		34	36
Fair value at December 31		427	411
Benefit Payments For Funded Plans [Member] | U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefits paid	[1]	(2,461)	(1,209)
Benefit Payments For Funded Plans [Member] | Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefits paid	[1]	(902)	(857)
Benefit Payments For Funded Plans [Member] | Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefits paid	[1]	$ (58)	$ (59)

[1] Benefit payments for funded plans.

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Pension And Other Postretirement Benefits (Summary Of Assets In Excess Of/(Less Than) Benefit Obligation) (Details) - USD ($) $ in Millions		Dec. 31, 2017	Dec. 31, 2016
U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan funded status of plan		$ (3,957)	$ (4,306)
Unfunded plans		(2,571)	(2,861)
Total	[1]	(6,528)	(7,167)
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan funded status of plan		413	212
Unfunded plans		(6,915)	(6,365)
Total	[1]	$ (6,502)	$ (6,153)

[1] Fair value of assets less benefit obligation shown on the preceding page.

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Pension And Other Postretirement Benefits (Assets Recorded In Balance Sheet And Other Comprehensive Income) (Details) - USD ($) $ in Millions		Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Postretirement benefits reserves		$ (21,132)	$ (20,680)
U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Balance at December 31	[1]	(6,528)	(7,167)
Current liabilities		(276)	(409)
Postretirement benefits reserves		(6,252)	(6,758)
Total recorded		(6,528)	(7,167)
Net actuarial loss/(gain)		3,982	5,354
Prior service cost		11	15
Total recorded in accumulated other comprehensive income		3,993	5,369
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Balance at December 31	[1]	(6,502)	(6,153)
Other assets		1,403	1,035
Current liabilities		(338)	(294)
Postretirement benefits reserves		(7,567)	(6,894)
Total recorded		(6,502)	(6,153)
Net actuarial loss/(gain)		5,586	5,629
Prior service cost		(143)	(123)
Total recorded in accumulated other comprehensive income		5,443	5,506
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Balance at December 31	[1]	(7,673)	(7,389)
Current liabilities		(360)	(361)
Postretirement benefits reserves		(7,313)	(7,028)
Total recorded		(7,673)	(7,389)
Net actuarial loss/(gain)		1,595	1,468
Prior service cost		(397)	(430)
Total recorded in accumulated other comprehensive income		$ 1,198	$ 1,038

[1] Fair value of assets less benefit obligation shown on the preceding page.

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Pension And Other Postretirement Benefits (Long-Term Rates Of Pension And Other Postretirement Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Total recorded in other comprehensive income	$ (1,279)	$ (2,287)	$ (5,535)
U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.25%	4.25%	4.00%
Long-term rate of return on funded assets	6.50%	6.50%	7.00%
Long-term rate of compensation increase	5.75%	5.75%	5.75%
Service cost	$ 784	$ 810	$ 864
Interest cost	798	793	785
Expected return on plan assets	(775)	(726)	(830)
Amortization of actuarial loss/(gain)	438	492	544
Amortization of prior service cost	5	6	6
Net pension enhancement and curtailment/settlement cost	609	319	499
Net periodic benefit cost	1,859	1,694	1,868
Net actuarial loss/(gain)	(324)	27	592
Amortization of actuarial (loss)/gain	(1,047)	(811)	(1,043)
Amortization of prior service (cost)/credit	(5)	(6)	(6)
Total recorded in other comprehensive income	(1,376)	(790)	(457)
Total recorded in net periodic benefit cost and other comprehensive income, before tax	$ 483	$ 904	$ 1,411
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.00%	3.60%	3.10%
Long-term rate of return on funded assets	5.20%	5.25%	5.90%
Long-term rate of compensation increase	4.00%	4.80%	5.30%
Service cost	$ 596	$ 585	$ 689
Interest cost	772	844	850
Expected return on plan assets	(1,000)	(927)	(1,094)
Amortization of actuarial loss/(gain)	476	536	730
Amortization of prior service cost	47	54	87
Net pension enhancement and curtailment/settlement cost	19	2	22
Net periodic benefit cost	910	1,094	1,284
Net actuarial loss/(gain)	(191)	(156)	(1,375)
Amortization of actuarial (loss)/gain	(495)	(538)	(752)
Prior service cost/(credit)	111	32	(401)
Amortization of prior service (cost)/credit	(47)	(54)	(87)
Foreign exchange rate changes	559	(108)	(1,126)
Total recorded in other comprehensive income	(63)	(824)	(3,741)
Total recorded in net periodic benefit cost and other comprehensive income, before tax	$ 847	$ 270	$ (2,457)
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.25%	4.25%	4.00%
Long-term rate of return on funded assets	6.50%	6.50%	7.00%
Long-term rate of compensation increase	5.75%	5.75%	5.75%
Service cost	$ 129	$ 153	$ 170
Interest cost	317	344	346
Expected return on plan assets	(24)	(25)	(28)
Amortization of actuarial loss/(gain)	96	153	206
Amortization of prior service cost	(33)	(30)	(24)
Net periodic benefit cost	485	595	670
Net actuarial loss/(gain)	215	(555)	(589)
Amortization of actuarial (loss)/gain	(96)	(153)	(206)
Prior service cost/(credit)			(535)
Amortization of prior service (cost)/credit	33	30	24
Foreign exchange rate changes	8	5	(31)
Total recorded in other comprehensive income	160	(673)	(1,337)
Total recorded in net periodic benefit cost and other comprehensive income, before tax	$ 645	$ (78)	$ (667)

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Pension And Other Postretirement Benefits (Summary Of The Change In Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Total (charge)/credit to other comprehensive income, before tax	$ 1,279	$ 2,287	$ 5,535
(Charge)/credit to income tax (see Note 4)	(290)	(692)	(1,810)
(Charge)/credit to investment in equity companies	(43)	(16)	81
(Charge)/credit to other comprehensive income including noncontrolling interests, after tax	946	1,579	3,806
Charge/(credit) to equity of noncontrolling interests	12	24	(202)
Exxon Mobil Corporation Share After Noncontrolling Interest [Member]
Defined Benefit Plan Disclosure [Line Items]
Total change in accumulated other comprehensive income, Postretirement Benefits Reserves Adjustment	958	1,603	3,604
U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Total (charge)/credit to other comprehensive income, before tax	1,376	790	457
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Total (charge)/credit to other comprehensive income, before tax	63	824	3,741
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total (charge)/credit to other comprehensive income, before tax	$ (160)	$ 673	$ 1,337

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Pension And Other Postretirement Benefits (Fair Value Of Benefit Plan Assets) (Details) - USD ($) $ in Millions		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Insurance contracts at contract value		$ 9	$ 11
Fair value of plan assets		12,782	12,793	$ 10,985
U.S. [Member] | U.S. Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	[1]	1,665	2,347
Fair value of plan assets		1,665	2,347
U.S. [Member] | Non-U.S. Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	[1]	1,570	2,126
Fair value of plan assets		1,570	2,126
U.S. [Member] | Private Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	[1]	532	553
Fair value of plan assets		532	553
U.S. [Member] | Corporate Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	[1]	1	1
Fair value of plan assets		5,261	4,979
U.S. [Member] | Government Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	[1]	2	1
Fair value of plan assets		3,606	2,636
U.S. [Member] | Asset-Backed Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	[1]	1	1
Fair value of plan assets		1	4
U.S. [Member] | Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	[1]	138	137
Fair value of plan assets		138	137
U.S. [Member] | Total At Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	[1]	3,909	5,166
Fair value of plan assets		12,773	12,782
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	[2]	5,260	4,978
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	[2]	3,604	2,635
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	[2]		3
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		8,864	7,616
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Insurance contracts at contract value		23	23
Fair value of plan assets		21,461	19,043	$ 18,417
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	[1]	2,967	3,343
Fair value of plan assets		2,967	3,343
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]	2,903	3,632
Fair value of plan assets		3,014	3,776
Pension Benefits - Non-U.S. [Member] | Private Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	[1]	522	539
Fair value of plan assets		522	539
Pension Benefits - Non-U.S. [Member] | Corporate Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	[1]	5,215	4,075
Fair value of plan assets		5,346	4,198
Pension Benefits - Non-U.S. [Member] | Government Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	[1]	9,056	6,753
Fair value of plan assets		9,325	6,952
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	[1]	72	72
Fair value of plan assets		106	107
Pension Benefits - Non-U.S. [Member] | Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	[1]	102	73
Fair value of plan assets		158	105
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	[1]	20,837	18,487
Fair value of plan assets		21,438	19,020
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	[3]	111	142
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	[4]	237	167
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		54	23
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		402	332
Pension Benefits - Non-U.S. [Member] | Fair Value Inputs Level 2 [Member] | Non-U.S. Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	[5]		2
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	[2]	131	123
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	[2]	32	32
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	[2]	34	35
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	[6]	2	9
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		$ 199	$ 201

[1] Per ASU 2015-07, certain instruments that are measured at fair value using the Net Asset Value (NAV) per share practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total value of plan assets.

[2] For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.

[3] For non-U.S. equity securities held in separate accounts, fair value is based on observable quoted prices on active exchanges.

[4] For government debt securities that are traded on active exchanges, fair value is based on observable quoted prices.

[5] For U.S. and non-U.S. equity securities held in the form of fund units that are redeemable at the measurement date, the published unit value is treated as a Level 2 input. The fair value of the securities owned by the funds is based on observable quoted prices on active exchanges, which are Level 1 inputs.

[6] For cash balances that are subject to withdrawal penalties or other adjustments, the fair value is treated as a Level 2 input.

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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, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	[1]	$ 130	$ 169
Fair value of plan assets		427	411
U.S. Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	[1]	73	98
Fair value of plan assets		73	98
Non-U.S. Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	[1]	55	71
Fair value of plan assets		55	71
Corporate Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		99	82
Government Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		197	159
Asset Backed Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		1	1
Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, net asset value	[1]	2
Fair value of plan assets		2
Fair Value Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy		297	242
Fair Value Inputs Level 2 [Member] | Corporate Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	[2]	99	82
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]	197	159
Fair Value Inputs Level 2 [Member] | Asset Backed Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, fair value hierarchy	[2]	$ 1	$ 1

[1] Per ASU 2015-07, certain instruments that are measured at fair value using the Net Asset Value (NAV) per share practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the total value of plan assets.

[2] For corporate, government and asset-backed debt securities, fair value is based on observable inputs of comparable market transactions.

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Pension And Other Postretirement Benefits (Pension Plans With Accumulated Benefit Obligation In Excess Of Plan Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Funded Pension Plans [Member] | U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 16,739	$ 17,099
Accumulated benefit obligation	14,022	14,390
Fair value of plan assets	12,782	12,793
Funded Pension Plans [Member] | Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	3,384	837
Accumulated benefit obligation	3,264	612
Fair value of plan assets	3,219	564
Unfunded Pension Plans [Member] | U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	2,571	2,861
Accumulated benefit obligation	1,535	1,855
Unfunded Pension Plans [Member] | Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	6,915	6,365
Accumulated benefit obligation	$ 6,208	$ 5,687

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Pension And Other Postretirement Benefits (Estimated Amortization) (Details) $ in Millions	Dec. 31, 2017 USD ($)
U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss/(gain)	$ 539	[1]
Prior service cost	5	[2]
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss/(gain)	412	[1]
Prior service cost	47	[2]
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss/(gain)	112	[1]
Prior service cost	$ (40)	[2]

[1] The Corporation amortizes the net balance of actuarial losses/(gains) as a component of net periodic benefit cost over the average remaining service period of active plan participants.

[2] The Corporation amortizes prior service cost on a straight-line basis as permitted under authoritative guidance for defined benefit pension and other postretirement benefit plans.

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Pension And Other Postretirement Benefits (Expected Contribution Pension Benefits And Other Postretirement Benefits) (Details) $ in Millions	Dec. 31, 2017 USD ($)
U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions expected in 2018	$ 490
Benefits payments expected in 2018	1,364
Benefits payments expected in 2019	1,279
Benefits payments expected in 2020	1,267
Benefits payments expected in 2021	1,268
Benefits payments expected in 2022	1,285
Benefits payments expected in 2023-2027	6,355
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions expected in 2018	720
Benefits payments expected in 2018	1,183
Benefits payments expected in 2019	1,163
Benefits payments expected in 2020	1,197
Benefits payments expected in 2021	1,203
Benefits payments expected in 2022	1,220
Benefits payments expected in 2023-2027	6,162
Gross Other Post Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefits payments expected in 2018	459
Benefits payments expected in 2019	465
Benefits payments expected in 2020	469
Benefits payments expected in 2021	470
Benefits payments expected in 2022	468
Benefits payments expected in 2023-2027	2,329
Other Postretirement Benefits Medicare Subsidy Receipt [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefits payments expected in 2018	25
Benefits payments expected in 2019	26
Benefits payments expected in 2020	28
Benefits payments expected in 2021	29
Benefits payments expected in 2022	30
Benefit payments expected in 2023-2027	$ 174

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Disclosures About Segments And Related Information (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosures About Segments And Related Information [Abstract]
Non-debt-related interest expense	$ 136	$ 63	$ 100

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Disclosures About Segments And Related Information (Schedule Of Segments And Related Information) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Segment Reporting Information [Line Items]
Earnings after income tax		$ 19,710	$ 7,840		$ 16,150
Earnings of equity companies included above		5,380	4,806		7,644
Sales and other operating revenue	[1]	237,162	200,628	[2]	239,854	[2]
Depreciation and depletion expense		19,893	22,308		18,048
Interest revenue		36	30		46
Interest expense		601	453		311
Income taxes expense (benefit)		(1,174)	(406)		5,415
Additions to property, plant and equipment		24,901	16,100		27,475
Investments in equity companies		24,354	20,810		20,337
Total assets		348,691	330,314		336,758
Sales-based taxes	[2]		17,980		19,634
Effect of U.S. tax reform - noncash
Segment Reporting Information [Line Items]
Effect of U.S. tax reform		(5,942)
U.S. [Member]
Segment Reporting Information [Line Items]
Income taxes expense (benefit)		(8,561)	(3,040)		(1,140)
Non-U.S. [Member]
Segment Reporting Information [Line Items]
Income taxes expense (benefit)		7,387	2,634		6,555
Upstream [Member] | U.S. [Member]
Segment Reporting Information [Line Items]
Earnings after income tax		6,622	(4,151)		(1,079)
Earnings of equity companies included above		216	53		226
Sales and other operating revenue		9,349	7,552	[2]	8,241	[2]
Intersegment revenue		5,729	3,827		4,344
Depreciation and depletion expense		6,963	9,626		5,301
Interest expense		87	17		26
Income taxes expense (benefit)		(8,552)	(2,600)		(879)
Additions to property, plant and equipment		9,761	3,144		6,915
Investments in equity companies		4,680	4,917		5,160
Total assets		89,048	86,146		93,648
Upstream [Member] | U.S. [Member] | Effect of U.S. tax reform - noncash
Segment Reporting Information [Line Items]
Effect of U.S. tax reform		(7,602)
Upstream [Member] | Non-U.S. [Member]
Segment Reporting Information [Line Items]
Earnings after income tax		6,733	4,347		8,180
Earnings of equity companies included above		3,618	3,359		5,831
Sales and other operating revenue		14,508	12,278	[2]	15,446	[2]
Intersegment revenue		22,935	18,099		20,839
Depreciation and depletion expense		9,741	9,550		9,227
Interest expense		29	29		27
Income taxes expense (benefit)		5,463	1,818		4,703
Additions to property, plant and equipment		8,617	7,878		14,561
Investments in equity companies		14,494	11,364		10,980
Total assets		155,822	153,183		155,316
Upstream [Member] | Non-U.S. [Member] | Effect of U.S. tax reform - noncash
Segment Reporting Information [Line Items]
Effect of U.S. tax reform		480
Downstream [Member] | U.S. [Member]
Segment Reporting Information [Line Items]
Earnings after income tax		1,948	1,094		1,901
Earnings of equity companies included above		118	58		170
Sales and other operating revenue		61,695	52,630	[2]	69,706	[2]
Intersegment revenue		14,857	11,796		12,440
Depreciation and depletion expense		658	628		664
Interest expense		1	1		8
Income taxes expense (benefit)		(61)	396		866
Additions to property, plant and equipment		769	791		916
Investments in equity companies		276	111		95
Total assets		18,172	16,201		16,498
Downstream [Member] | U.S. [Member] | Effect of U.S. tax reform - noncash
Segment Reporting Information [Line Items]
Effect of U.S. tax reform		(618)
Downstream [Member] | Non-U.S. [Member]
Segment Reporting Information [Line Items]
Earnings after income tax		3,649	3,107		4,656
Earnings of equity companies included above		490	404		444
Sales and other operating revenue		122,881	102,756	[2]	119,050	[2]
Intersegment revenue		22,263	18,775		22,166
Depreciation and depletion expense		883	889		1,003
Interest expense		6	8		4
Income taxes expense (benefit)		934	951		1,325
Additions to property, plant and equipment		1,551	1,525		1,477
Investments in equity companies		1,462	1,255		1,179
Total assets		34,294	29,208		29,808
Chemical [Member] | U.S. [Member]
Segment Reporting Information [Line Items]
Earnings after income tax		2,190	1,876		2,386
Earnings of equity companies included above		90	111		144
Sales and other operating revenue		11,035	9,944	[2]	10,879	[2]
Intersegment revenue		7,270	6,404		7,442
Depreciation and depletion expense		299	275		375
Income taxes expense (benefit)		362	693		646
Additions to property, plant and equipment		1,330	1,463		1,865
Investments in equity companies		341	158		125
Total assets		13,363	11,600		10,174
Chemical [Member] | U.S. [Member] | Effect of U.S. tax reform - noncash
Segment Reporting Information [Line Items]
Effect of U.S. tax reform		(335)
Chemical [Member] | Non-U.S. [Member]
Segment Reporting Information [Line Items]
Earnings after income tax		2,328	2,739		2,032
Earnings of equity companies included above		1,217	1,188		1,235
Sales and other operating revenue		17,659	15,447	[2]	16,524	[2]
Intersegment revenue		5,550	4,211		5,168
Depreciation and depletion expense		504	477		654
Interest expense					1
Income taxes expense (benefit)		664	609		633
Additions to property, plant and equipment		2,019	482		629
Investments in equity companies		3,387	3,247		3,025
Total assets		21,133	18,453		18,236
Corporate And Financing [Member]
Segment Reporting Information [Line Items]
Earnings after income tax		(3,760)	(1,172)		(1,926)
Earnings of equity companies included above		(369)	(367)		(406)
Sales and other operating revenue		35	21	[2]	8	[2]
Intersegment revenue		208	236		274
Depreciation and depletion expense		845	863		824
Interest revenue		36	30		46
Interest expense		478	398		245
Income taxes expense (benefit)		16	(2,273)		(1,879)
Additions to property, plant and equipment		854	817		1,112
Investments in equity companies		(286)	(242)		(227)
Total assets		16,859	$ 15,523		$ 13,078
Corporate And Financing [Member] | Effect of U.S. tax reform - noncash
Segment Reporting Information [Line Items]
Effect of U.S. tax reform		$ 2,133

[1] Effective December 31, 2017, the Corporation revised its accounting policy election related to sales-based taxes. See Note 2: Accounting Changes.

[2] Sales and other operating revenue excludes previously reported sales-based taxes of $17,980 million for 2016 and $19,634 million for 2015. See Note 2: Accounting Changes.

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Disclosures About Segments And Related Information (Schedule Of Geographic Sales And Other Operating Revenue) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Segment Reporting Revenue Reconciling Item [Line Items]
Sales and other operating revenue		$ 237,162	$ 200,628	[1]	$ 239,854	[1]
Sales-based taxes	[1]		17,980		19,634
U.S. [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Sales and other operating revenue		82,079	70,126	[1]	88,826	[1]
Non-U.S. [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Sales and other operating revenue		155,083	130,502	[1]	151,028	[1]
Canada [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Sales and other operating revenue		20,116	17,682	[1]	19,076	[1]
United Kingdom [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Sales and other operating revenue		16,611	15,452	[1]	20,605	[1]
Belgium [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Sales and other operating revenue		13,633	10,834	[1]	12,481	[1]
Singapore [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Sales and other operating revenue		11,589	9,919	[1]	10,632	[1]
Italy [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Sales and other operating revenue		11,476	9,715	[1]	11,220	[1]
France [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Sales and other operating revenue		11,235	9,487	[1]	10,631	[1]
Germany [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Sales and other operating revenue		$ 8,484	$ 7,899	[1]	$ 8,447	[1]

[1] Sales and other operating revenue excludes previously reported sales-based taxes of $17,980 million for 2016 and $19,634 million for 2015. See Note 2: Accounting Changes.

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Disclosures About Segments And Related Information (Schedule Of Long-Lived Assets By Geographic Regions) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Long-lived assets	$ 252,630	$ 244,224	$ 251,605
U.S. [Member]
Property, Plant and Equipment [Line Items]
Long-lived assets	105,101	101,194	107,039
Non-U.S. [Member]
Property, Plant and Equipment [Line Items]
Long-lived assets	147,529	143,030	144,566
Canada [Member]
Property, Plant and Equipment [Line Items]
Long-lived assets	41,138	40,144	39,775
Australia [Member]
Property, Plant and Equipment [Line Items]
Long-lived assets	16,908	16,510	15,894
Singapore [Member]
Property, Plant and Equipment [Line Items]
Long-lived assets	11,292	9,769	9,681
Kazakhstan [Member]
Property, Plant and Equipment [Line Items]
Long-lived assets	10,121	10,325	9,705
Nigeria [Member]
Property, Plant and Equipment [Line Items]
Long-lived assets	9,734	11,314	12,222
Papua New Guinea [Member]
Property, Plant and Equipment [Line Items]
Long-lived assets	8,463	5,719	5,985
Angola [Member]
Property, Plant and Equipment [Line Items]
Long-lived assets	7,689	8,413	8,777
Russia [Member]
Property, Plant and Equipment [Line Items]
Long-lived assets	$ 5,702	$ 4,828	$ 4,744

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Income And Other Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income And Other Taxes [Abstract]
Reconciliation between income tax expense and theoretical U.S. tax rate, statutory rate		35.00%	35.00%	35.00%
Potential percentage decrease in unrecognized tax benefits		10.00%
Potential percentage increase in unrecognized tax benefits		10.00%
Interest expense on income tax reserves		$ 36	$ 4	$ 39
Interest payable on income tax reserves		168	191
Valuation Allowance [Abstract]
Valuation allowance change from 2016 to 2017		1,056
Asset valuation allowances		2,565	1,509
Scenario Forecast [Member]
Income And Other Taxes [Abstract]
Reconciliation between income tax expense and theoretical U.S. tax rate, statutory rate	21.00%
US Tax Reform [Member]
Income And Other Taxes [Abstract]
Net deferred income tax expense (credits)/charges for tax rate and law changes		(5,942)
Changes in Non U.S. tax laws and rates
Income And Other Taxes [Abstract]
Net deferred income tax expense (credits)/charges for tax rate and law changes		22
Total US and Non US
Income And Other Taxes [Abstract]
Net deferred income tax expense (credits)/charges for tax rate and law changes		(5,920)	$ 180	$ 177
Change in net provisions [Member]
Valuation Allowance [Abstract]
Valuation allowance change from 2016 to 2017		502
Valuation Allowance Recorded In IOC Acquisition [Member]
Valuation Allowance [Abstract]
Valuation allowance change from 2016 to 2017		402
Effects of foreign currency translation [Member]
Valuation Allowance [Abstract]
Valuation allowance change from 2016 to 2017		$ 152

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Income And Other Taxes (Schedule Of Income And Other Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income and Other Taxes [Line Items]
Current	$ 7,210	$ 3,842	$ 7,126
Deferred - net	(8,321)	(4,223)	(1,737)
U.S. tax on non-U.S. operations	17	41	38
Total federal and non-U.S.	(1,094)	(340)	5,427
State	(80)	(66)	(12)
Total income tax expense	(1,174)	(406)	5,415
Other taxes and duties	30,104	29,020	30,309
Other taxes and duties included in production and manufacturing expenses	1,854	1,860	1,985
Other taxes and duties included in SG&A expenses	501	495	540
Total other taxes and duties	32,459	31,375	32,834
Total	31,285	30,969	38,249
U.S. [Member]
Income and Other Taxes [Line Items]
Current	577	(214)
Deferred - net	(9,075)	(2,801)	(1,166)
U.S. tax on non-U.S. operations	17	41	38
Total federal and non-U.S.	(8,481)	(2,974)	(1,128)
State	(80)	(66)	(12)
Total income tax expense	(8,561)	(3,040)	(1,140)
Other taxes and duties	3,330	3,209	3,206
Other taxes and duties included in production and manufacturing expenses	1,107	1,052	1,157
Other taxes and duties included in SG&A expenses	147	133	150
Total other taxes and duties	4,584	4,394	4,513
Total	(3,977)	1,354	3,373
Non-U.S. [Member]
Income and Other Taxes [Line Items]
Current	6,633	4,056	7,126
Deferred - net	754	(1,422)	(571)
Total federal and non-U.S.	7,387	2,634	6,555
Total income tax expense	7,387	2,634	6,555
Other taxes and duties	26,774	25,811	27,103
Other taxes and duties included in production and manufacturing expenses	747	808	828
Other taxes and duties included in SG&A expenses	354	362	390
Total other taxes and duties	27,875	26,981	28,321
Total	$ 35,262	$ 29,615	$ 34,876

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Income And Other Taxes (Reconciliation Between Income Tax Expense And Theoretical U.S. Tax) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Effective Tax Rate [Line Items]
United States income before income taxes	$ (754)		$ (5,832)		$ 147
Non-U.S. income before income taxes	19,428		13,801		21,819
Income before income taxes	18,674		7,969		21,966
Theoretical tax	6,536		2,789		7,688
Effect of equity method of accounting	(1,883)		(1,682)		(2,675)
Non-U.S. taxes in excess of theoretical U.S. tax	1,848		(582)	[1]	1,415
Other	(1,733)	[2]	(931)	[2]	(1,013)
Total income tax expense	(1,174)		(406)		5,415
ExxonMobil share of equity company income taxes	2,228		1,692		3,011
Total income taxes	1,054		1,286		8,426
Net income including noncontrolling interests	19,848		8,375		16,551
Total income before taxes	$ 20,902		$ 9,661		$ 24,977
Effective income tax rate	5.00%		13.00%		34.00%
Adjustment to deferred taxes			$ 227
Tax reserve adjustment			(548)
Exploration tax benefit	$ (708)		(198)
Adjustment to prior year tax position			(176)
Effect of U.S. tax reform
Effective Tax Rate [Line Items]
Effect of U.S. tax reform	(5,942)
U.S. [Member]
Effective Tax Rate [Line Items]
Total income tax expense	(8,561)		(3,040)		$ (1,140)
Non-U.S. [Member]
Effective Tax Rate [Line Items]
Total income tax expense	$ 7,387		$ 2,634		$ 6,555

[1] 2016 includes a $227 million expense from an adjustment to deferred taxes and a $548 million benefit from an adjustment to a tax position in prior years.

[2] 2017 includes an exploration tax benefit of $708 million. 2016 includes an exploration tax benefit of $198 million and benefits from an adjustment to a prior year tax position of $176 million.

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Income And Other Taxes (Deferred Income Taxes Assets And Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Income And Other Taxes [Abstract]
Property, plant and equipment	$ 36,559	$ 46,744
Other liabilities	5,625	4,262
Total deferred tax liabilities	42,184	51,006
Pension and other postretirement benefits	(4,338)	(6,053)
Asset retirement obligations	(4,237)	(5,454)
Tax loss carryforwards	(6,767)	(5,472)
Other assets	(5,832)	(5,615)
Total deferred tax assets	(21,174)	(22,594)
Asset valuation allowances	2,565	1,509
Net deferred tax liabilities	$ 23,575	$ 29,921

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Income And Other Taxes (Deferred Income Tax (Assets) And Liabilities By Balance Sheet Classification) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Income And Other Taxes [Abstract]
Other assets, including intangibles, net	$ (3,318)	$ (4,120)
Deferred income tax liabilities	26,893	34,041
Net deferred tax liabilities	$ 23,575	$ 29,921

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Income And Other Taxes (Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income And Other Taxes [Abstract]
Balance at January 1	$ 9,468	$ 9,396	$ 8,986
Additions based on current year's tax positions	522	655	903
Additions for prior years' tax positions	523	534	496
Reductions for prior years' tax positions	(865)	(1,019)	(190)
Reductions due to lapse of the statute of limitations	(113)	(7)	(4)
Settlements with tax authorities	(782)	(70)	(725)
Foreign exchange effects/other	30	(21)	(70)
Balance at December 31	$ 8,783	$ 9,468	$ 9,396

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Income And Other Taxes (Remaining Tax Years Subject To Examination By Major Tax Jurisdiction) (Details)	12 Months Ended
	Dec. 31, 2017
Abu Dhabi [Member] | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2014
Abu Dhabi [Member] | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2017
Angola [Member] | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2016
Angola [Member] | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2017
Australia [Member] | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2008
Australia [Member] | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2017
Belgium [Member] | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2015
Belgium [Member] | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2017
Canada [Member] | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	1998
Canada [Member] | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2017
Equatorial Guinea [Member] | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2007
Equatorial Guinea [Member] | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2017
Indonesia [Member] | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2007
Indonesia [Member] | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2017
Iraq [Member] | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2012
Iraq [Member] | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2017
Malaysia [Member] | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2009
Malaysia [Member] | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2017
Nigeria [Member] | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2006
Nigeria [Member] | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2017
Norway [Member] | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2007
Norway [Member] | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2017
Papua New Guinea [Member] | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2008
Papua New Guinea [Member] | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2017
Russia [Member] | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2015
Russia [Member] | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2017
United Kingdom [Member] | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2015
United Kingdom [Member] | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2017
United States [Member] | Earliest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2006
United States [Member] | Latest Tax Year [Member]
Income and Other Taxes [Line Items]
Open tax years by major tax jurisdiction	2017

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Acquisitions (Narrative) (Details) $ / shares in Units, shares in Millions, $ in Millions	Feb. 28, 2017 USD ($) shares	Feb. 22, 2017 USD ($) Tcfe $ / shares $ / Mcfe shares
InterOil Corporation [Member]
Business Acquisition [Line Items]
Date of acquisition		Feb. 22, 2017
Total purchase price		$ 2,700
Consideration transferred equity interests issued and issuable		2,200
Contingent liability fair value		300
Cash paid		$ 200
Equity interests issued or issuable, number of shares | shares		28
IOC Acquisition Date Resource Certification Finalized		Sep. 06, 2017
Business Combination Contingent Consideration Liability [Abstract]
Contingent consideration per trilion cubic feet equivalent of resources | $ / shares		$ 7.07
Receivable value range minimum per thousand cubic feet | Tcfe		6.2
Receivable value range maximum per thousand cubic feet | Tcfe		11
Business Combination Contingent Consideration Asset [Abstract]
Minimum resource for contingent receivable, tcfe | Tcfe		3.5
Minimum amount per thousand cubic feet equivalent | $ / Mcfe		0.24
Maximum amount per thousand cubic feet equivalent | $ / Mcfe		0.4
Contingent receivable		$ 1,100
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net [Abstract]
Current assets		600
Property, plant and equipment		2,900
Other		600
Total assets		4,100
Current liabilities		500
Long-term liabilities		900
Total liabilities		1,400
Net assets acquired		$ 2,700
Bass Family Permian Basin Resources [Member]
Business Acquisition [Line Items]
Date of acquisition	Feb. 28, 2017
Total purchase price	$ 6,200
Consideration transferred equity interests issued and issuable	5,500
Contingent liability fair value	$ 700
Equity interests issued or issuable, number of shares | shares	68
Business Combination Contingent Consideration Liability [Abstract]
Contingent consideration liability	$ 1,020
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net [Abstract]
Property, plant and equipment	6,300
Total assets	6,300
Long-term liabilities	100
Total liabilities	100
Net assets acquired	$ 6,200
Bass Family Permian Basin Resources [Member] | Maximum [Member]
Business Combination Contingent Consideration Liability [Abstract]
Expected date of payment	2032
Bass Family Permian Basin Resources [Member] | Minimum [Member]
Business Combination Contingent Consideration Liability [Abstract]
Expected date of payment	2020