10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2013

or

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number 001-00368

Chevron Corporation

(Exact name of registrant as specified in its charter)

Delaware	94-0890210
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)
6001 Bollinger Canyon Road, San Ramon, California	94583-2324 (Zip Code)
(Address of principal executive offices)

Registrant’s telephone number, including area code: (925) 842-1000

NONE

(Former name, former address and former fiscal year, if changed since last report.)

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  þ        No  o

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 (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  þ        No  o

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

Large accelerated filer þ	Accelerated filer o	Non-accelerated filer o	Smaller reporting company o
	(Do not check if a smaller reporting company)

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

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date:

Class	Outstanding as of March 31, 2013
Common stock, $.75 par value	1,938,977,775

INDEX

		Page No.
	Cautionary Statements Relevant to Forward-Looking Information for the Purpose of “Safe Harbor” Provisions of the Private Securities Litigation Reform Act of 1995	2
PART I FINANCIAL INFORMATION
Item 1.	Consolidated Financial Statements —
	Consolidated Statement of Income for the Three Months Ended March 31, 2013, and 2012	3
	Consolidated Statement of Comprehensive Income for the Three Months Ended March 31, 2013, and 2012	4
	Consolidated Balance Sheet at March 31, 2013, and December 31, 2012	5
	Consolidated Statement of Cash Flows for the Three Months Ended March 31, 2013, and 2012	6
	Notes to Consolidated Financial Statements	7-23
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	24-36
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	36
Item 4.	Controls and Procedures	36
PART II OTHER INFORMATION
Item 1.	Legal Proceedings	37
Item 1A.	Risk Factors	37
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	37
Item 4.	Mine Safety Disclosures	37
Item 6.	Exhibits	38
Signature		39
Exhibits:	Computation of Ratio of Earnings to Fixed Charges	41
Rule 13a-14(a)/15d-14(a) Certifications		42-43
Section 1350 Certifications		44-45

1

CAUTIONARY STATEMENTS RELEVANT TO FORWARD-LOOKING INFORMATION

FOR THE PURPOSE OF “SAFE HARBOR” PROVISIONS OF THE

PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995

This quarterly report on Form 10-Q of Chevron Corporation contains forward-looking statements relating to Chevron’s operations that are based on management’s current expectations, estimates and projections about the petroleum, chemicals and other energy-related industries. Words such as “anticipates,” “expects,” “intends,” “plans,” “targets,” “forecasts,” “projects,” “believes,” “seeks,” “schedules,” “estimates,” “budgets,” “outlook” and similar expressions are intended to identify such forward-looking statements. These statements are not guarantees of future performance and are subject to certain risks, uncertainties and other factors, many of which are beyond the company’s control and are difficult to predict. Therefore, actual outcomes and results may differ materially from what is expressed or forecasted in such forward-looking statements. The reader should not place undue reliance on these forward-looking statements, which speak only as of the date of this report. Unless legally required, Chevron undertakes no obligation to update publicly any forward-looking statements, whether as a result of new information, future events or otherwise.

Among the important factors that could cause actual results to differ materially from those in the forward-looking statements are: changing crude oil and natural gas prices; changing refining, marketing and chemicals margins; actions of competitors or regulators; timing of exploration expenses; timing of crude oil liftings; the competitiveness of alternate-energy sources or product substitutes; technological developments; the results of operations and financial condition of equity affiliates; the inability or failure of the company’s joint-venture partners to fund their share of operations and development activities; the potential failure to achieve expected net production from existing and future crude oil and natural gas development projects; potential delays in the development, construction or start-up of planned projects; the potential disruption or interruption of the company’s production or manufacturing facilities or delivery/transportation networks due to war, accidents, political events, civil unrest, severe weather or crude oil production quotas that might be imposed by the Organization of Petroleum Exporting Countries; the potential liability for remedial actions or assessments under existing or future environmental regulations and litigation; significant investment or product changes required by existing or future environmental statutes, regulations and litigation; the potential liability resulting from other pending or future litigation; the company’s future acquisition or disposition of assets and gains and losses from asset dispositions or impairments; government-mandated sales, divestitures, recapitalizations, industry-specific taxes, changes in fiscal terms or restrictions on scope of company operations; foreign currency movements compared with the U.S. dollar; the effects of changed accounting rules under generally accepted accounting principles promulgated by rule-setting bodies; and the factors set forth under the heading “Risk Factors” on pages 28 through 30 of the company’s 2012 Annual Report on Form 10-K. In addition, such results could be affected by general domestic and international economic and political conditions. Other unpredictable or unknown factors not discussed in this report could also have material adverse effects on forward-looking statements.

2

PART I.

FINANCIAL INFORMATION

Item 1. Consolidated Financial Statements

CHEVRON CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF INCOME

(Unaudited)

	Three Months Ended March 31
	2013		2012
	(Millions of dollars, except per-share amounts)
Revenues and Other Income
Sales and other operating revenues*	$	54,296	$	58,896
Income from equity affiliates	2,284		1,709
Other income	238		100
Total Revenues and Other Income	56,818		60,705
Costs and Other Deductions
Purchased crude oil and products	32,910		36,053
Operating expenses	5,762		5,183
Selling, general and administrative expenses	998		940
Exploration expenses	247		403
Depreciation, depletion and amortization	3,481		3,205
Taxes other than on income*	3,137		2,852
Total Costs and Other Deductions	46,535		48,636
Income Before Income Tax Expense	10,283		12,069
Income Tax Expense	4,044		5,570
Net Income	6,239		6,499
Less: Net income attributable to noncontrolling interests	61		28
Net Income Attributable to Chevron Corporation	$	6,178	$	6,471
Per Share of Common Stock:
Net Income Attributable to Chevron Corporation
— Basic	$	3.20	$	3.30
— Diluted	$	3.18	$	3.27
Dividends	$	0.90	$	0.81
Weighted Average Number of Shares Outstanding (000s)
— Basic	1,929,014		1,963,862
— Diluted	1,943,931		1,978,781

* Includes excise, value-added and similar taxes: 2,033 1,787

See accompanying notes to consolidated financial statements.

3

CHEVRON CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME

(Unaudited)

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Net Income	$	6,239		$	6,499
Currency translation adjustment	(11		)	14
Unrealized holding gain (loss) on securities:
Net gain (loss) arising during period	(1		)	1
Derivatives:
Net derivatives gain on hedge transactions	—			10
Reclassification to net income of net realized (loss) gain	(5		)	6
Income taxes benefit (expense) on derivatives transactions	2			(6		)
Total	(3		)	10
Defined benefit plans:
Actuarial loss:
Amortization to net income of net actuarial and settlement losses	227			273
Actuarial loss arising during period	—			(43		)
Prior service cost:
Amortization to net income of net prior service credits	(7		)	(14		)
Defined benefit plans sponsored by equity affiliates	(20		)	11
Income taxes on defined benefit plans	(85		)	(105		)
Total	115			122
Other Comprehensive Gain, Net of Tax	100			147
Comprehensive Income	6,339			6,646
Comprehensive income attributable to noncontrolling interests	(61		)	(28		)
Comprehensive Income Attributable to Chevron Corporation	$	6,278		$	6,618

See accompanying notes to consolidated financial statements.

4

CHEVRON CORPORATION AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEET

(Unaudited)

	At March 31 2013			At December 31 2012
	(Millions of dollars, except per-share amounts)
ASSETS
Cash and cash equivalents	$	17,374		$	20,939
Time deposits	1,408			708
Marketable securities	266			266
Accounts and notes receivable, net	21,969			20,997
Inventories
Crude oil and petroleum products	4,384			3,923
Chemicals	477			475
Materials, supplies and other	1,803			1,746
Total inventories	6,664			6,144
Prepaid expenses and other current assets	7,015			6,666
Total Current Assets	54,696			55,720
Long-term receivables, net	3,121			3,053
Investments and advances	24,504			23,718
Properties, plant and equipment, at cost	271,239			263,481
Less: Accumulated depreciation, depletion and amortization	125,266			122,133
Properties, plant and equipment, net	145,973			141,348
Deferred charges and other assets	4,476			4,503
Goodwill	4,640			4,640
Total Assets	$	237,410		$	232,982
LIABILITIES AND EQUITY
Short-term debt	$	2,090		$	127
Accounts payable	21,617			22,776
Accrued liabilities	5,048			5,738
Federal and other taxes on income	4,711			4,341
Other taxes payable	1,219			1,230
Total Current Liabilities	34,685			34,212
Long-term debt	11,960			11,966
Capital lease obligations	93			99
Deferred credits and other noncurrent obligations	21,623			21,502
Noncurrent deferred income taxes	18,046			17,672
Reserves for employee benefit plans	9,517			9,699
Total Liabilities	95,924			95,150
Preferred stock (authorized 100,000,000 shares, $1.00 par value, none issued)	—			—
Common stock (authorized 6,000,000,000 shares; $0.75 par value;      2,442,676,580 shares issued at March 31, 2013, and December 31, 2012)	1,832			1,832
Capital in excess of par value	15,585			15,497
Retained earnings	164,173			159,730
Accumulated other comprehensive loss	(6,269		)	(6,369		)
Deferred compensation and benefit plan trust	(262		)	(282		)
Treasury stock, at cost (503,698,805 and 495,978,691 shares at March 31, 2013,      and December 31, 2012, respectively)	(34,925		)	(33,884		)
Total Chevron Corporation Stockholders’ Equity	140,134			136,524
Noncontrolling interests	1,352			1,308
Total Equity	141,486			137,832
Total Liabilities and Equity	$	237,410		$	232,982

See accompanying notes to consolidated financial statements.

5

CHEVRON CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF CASH FLOWS

(Unaudited)

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Operating Activities
Net Income	$	6,239		$	6,499
Adjustments
Depreciation, depletion and amortization	3,481			3,205
Dry hole expense	12			242
Distributions less than income from equity affiliates	(578		)	(178		)
Net before-tax gains on asset retirements and sales	(27		)	(122		)
Net foreign currency effects	(109		)	142
Deferred income tax provision	127			491
Net increase in operating working capital	(3,360		)	(2,795		)
Increase in long-term receivables	(66		)	(15		)
(Increase) decrease in other deferred charges	(111		)	83
Cash contributions to employee pension plans	(238		)	(345		)
Other	344			1,180
Net Cash Provided by Operating Activities	5,714			8,387
Investing Activities
Capital expenditures	(8,192		)	(5,895		)
Proceeds and deposits related to asset sales	76			428
Net (purchases) sales of time deposits	(700		)	3,300
Net sales of marketable securities	—			11
Repayment of loans by equity affiliates	1			—
Net sales of other short-term investments	356			183
Net Cash Used for Investing Activities	(8,459		)	(1,973		)
Financing Activities
Net borrowings of short-term obligations	2,069			(852		)
Repayments of long-term debt and other financing obligations	(102		)	(15		)
Cash dividends — common stock	(1,735		)	(1,590		)
Distributions to noncontrolling interests	(10		)	(8		)
Net purchases of treasury shares	(1,027		)	(996		)
Net Cash Used for Financing Activities	(805		)	(3,461		)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(15		)	54
Net Change in Cash and Cash Equivalents	(3,565		)	3,007
Cash and Cash Equivalents at January 1	20,939			15,864
Cash and Cash Equivalents at March 31	$	17,374		$	18,871

See accompanying notes to consolidated financial statements.

6

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Note 1. Interim Financial Statements

The accompanying consolidated financial statements of Chevron Corporation and its subsidiaries (the company) have not been audited by an independent registered public accounting firm. In the opinion of the company’s management, the interim data includes all adjustments necessary for a fair statement of the results for the interim periods. These adjustments were of a normal recurring nature. The results for the three-month period ended March 31, 2013, are not necessarily indicative of future financial results. The term “earnings” is defined as net income attributable to Chevron Corporation.

Certain notes and other information have been condensed or omitted from the interim financial statements presented in this Quarterly Report on Form 10-Q. Therefore, these financial statements should be read in conjunction with the company’s 2012 Annual Report on Form 10-K.

Note 2. Changes in Accumulated Other Comprehensive Losses

The change in Accumulated Other Comprehensive Losses (AOCL) presented on the Consolidated Balance Sheet and the impact of significant amounts reclassified from AOCL on information presented in the Consolidated Statement of Income for the three months ending March 31, 2013, are reflected in the table below.

Changes in Accumulated Other Comprehensive Income (Loss) by Component ⁽¹⁾ 

(Millions of Dollars)

	Three Months Ended March 31, 2013
	Currency Translation Adjustment			Unrealized Holding Gains (Losses) on Securities			Derivatives			Defined Benefit Plans			Total
Balance at January 1	$	(65	)	$	1		$	125		$	(6,430	)	$	(6,369	)
Components of Other Comprehensive Income (Loss):
Before Reclassifications	(11		)	(1		)	—			(25		)	(37		)
Reclassifications (2)	—			—			(3		)	140			137
Net Other Comprehensive Income (Loss)	(11		)	(1		)	(3		)	115			100
Balance at March 31	$	(76	)	$	—		$	122		$	(6,315	)	$	(6,269	)

⁽¹⁾ All amounts are net of tax.

⁽²⁾ Refer to Note 9, Employee Benefits for reclassified components totaling $220 million that are included in employee benefit costs for the three months ending March 31, 2013. Related income taxes for the same period, totaling $80 million, are reflected in Income Tax Expense on the Consolidated Statement of Income. All other reclassified amounts were insignificant.

7

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Note 3. Noncontrolling Interests

Ownership interests in the company’s subsidiaries held by parties other than the parent are presented separately from the parent’s equity on the Consolidated Balance Sheet. The amount of consolidated net income attributable to the parent and the noncontrolling interests are both presented on the face of the Consolidated Statement of Income.

Activity for the equity attributable to noncontrolling interests for the first three months of 2013 and 2012 is as follows:

	2013									2012
	Chevron Corporation Stockholders’ Equity			Noncontrolling Interest			Total Equity			Chevron Corporation Stockholders’ Equity			Noncontrolling Interest			Total Equity
	(Millions of dollars)
Balance at January 1	$	136,524		$	1,308		$	137,832		$	121,382		$	799		$	122,181
Net income	6,178			61			6,239			6,471			28			6,499
Dividends	(1,736		)	—			(1,736		)	(1,590		)	—			(1,590		)
Distributions to noncontrolling interests	—			(10		)	(10		)	—			(8		)	(8		)
Treasury shares, net	(1,041		)	—			(1,041		)	(1,016		)	—			(1,016		)
Other changes, net*	209			(7		)	202			260			—			260
Balance at March 31	$	140,134		$	1,352		$	141,486		$	125,507		$	819		$	126,326

 _________________________________

* Includes components of comprehensive income, which are disclosed separately in the Consolidated Statement of Comprehensive Income.

Note 4. Information Relating to the Consolidated Statement of Cash Flows

The “Net increase in operating working capital” was composed of the following operating changes:

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Increase in accounts and notes receivable	$	(994	)	$	(153	)
Increase in inventories	(520		)	(1,847		)
Increase in prepaid expenses and other current assets	(437		)	(119		)
Decrease in accounts payable and accrued liabilities	(1,759		)	(1,027		)
Increase in income and other taxes payable	350			351
Net increase in operating working capital	$	(3,360	)	$	(2,795	)

The “Net increase in operating working capital” includes reductions of $28 million and $26 million for excess income tax benefits associated with stock options exercised during the three months ended March 31, 2013, and 2012, respectively. These amounts are offset by an equal amount in “Net purchases of treasury shares.”

“Net Cash Provided by Operating Activities” included the following cash payments for interest on debt and for income taxes:

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Interest on debt (net of capitalized interest)	$	—	$	36
Income taxes	3,434		4,140

8

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

"Other" includes changes in postretirement benefits obligations and other long-term liabilities.

Information related to "Restricted Cash" is included on page 21 in Note 12 under the heading "Restricted Cash."

The “Net (purchases) sales of time deposits” consisted of the following gross amounts:

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Time deposits purchased	$	(708	)	$	(8	)
Time deposits matured	8			3,308
Net (purchases) sales of time deposits	$	(700	)	$	3,300

The “Net sales of marketable securities” consisted of the following gross amounts:

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Marketable securities purchased	$	—	$	—
Marketable securities sold	—		11
Net sales of marketable securities	$	—	$	11

The “Net purchases of treasury shares” represents the cost of common shares acquired less the cost of shares issued for share-based compensation plans. Purchases totaled $1.3 billion for the first three months in both 2013 and 2012. During the first three months of 2013 and 2012, the company purchased 10.8 million and 11.6 million common shares under its ongoing share repurchase program, respectively, for $1.25 billion in each corresponding period.

The major components of “Capital expenditures” and the reconciliation of this amount to the capital and exploratory expenditures, including equity affiliates, are as follows:

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Additions to properties, plant and equipment	$	7,935		$	5,511
Additions to investments	262			192
Current year dry hole expenditures	12			205
Payments for other liabilities and assets, net	(17		)	(13		)
Capital expenditures	8,192			5,895
Expensed exploration expenditures	235			161
Assets acquired through capital lease obligations	2			—
Capital and exploratory expenditures, excluding equity affiliates	8,429			6,056
Company’s share of expenditures by equity affiliates	453			361
Capital and exploratory expenditures, including equity affiliates	$	8,882		$	6,417

9

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Note 5. Operating Segments and Geographic Data

Although each subsidiary of Chevron is responsible for its own affairs, Chevron Corporation manages its investments in these subsidiaries and their affiliates. The investments are grouped into two business segments, Upstream and Downstream, representing the company’s “reportable segments” and “operating segments” as defined in accounting standards for segment reporting (ASC 280). Upstream operations consist primarily of exploring for, developing and producing crude oil and natural gas; liquefaction, transportation and regasification associated with liquefied natural gas (LNG); transporting crude oil by major international oil export pipelines; processing, transporting, storage and marketing of natural gas; and a gas-to-liquids project. Downstream operations consist primarily of refining of crude oil into petroleum products; marketing of crude oil and refined products; transporting of crude oil and refined products by pipeline, marine vessel, motor equipment and rail car; and manufacturing and marketing of commodity petrochemicals, plastics for industrial uses, and fuel and lubricant additives. All Other activities of the company include mining operations, power generation businesses, worldwide cash management and debt financing activities, corporate administrative functions, insurance operations, real estate activities, energy services, alternative fuels, and technology companies.

The segments are separately managed for investment purposes under a structure that includes “segment managers” who report to the company’s “chief operating decision maker” (CODM) (terms as defined in ASC 280). The CODM is the company’s Executive Committee (EXCOM), a committee of senior officers that includes the Chief Executive Officer, and EXCOM reports to the Board of Directors of Chevron Corporation.

The operating segments represent components of the company, as described in accounting standards for segment reporting (ASC 280), that engage in activities (a) from which revenues are earned and expenses are incurred; (b) whose operating results are regularly reviewed by the CODM, which makes decisions about resources to be allocated to the segments and assesses their performance; and (c) for which discrete financial information is available.

Segment managers for the reportable segments are directly accountable to, and maintain regular contact with, the company’s CODM to discuss the segment’s operating activities and financial performance. The CODM approves annual capital and exploratory budgets at the reportable segment level, as well as reviews capital and exploratory funding for major projects and approves major changes to the annual capital and exploratory budgets. However, business-unit managers within the operating segments are directly responsible for decisions relating to project implementation and all other matters connected with daily operations. Company officers who are members of the EXCOM also have individual management responsibilities and participate in other committees for purposes other than acting as the CODM.

The company’s primary country of operation is the United States of America, its country of domicile. Other components of the company’s operations are reported as “International” (outside the United States).

10

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Segment Earnings The company evaluates the performance of its operating segments on an after-tax basis, without considering the effects of debt financing interest expense or investment interest income, both of which are managed by the company on a worldwide basis. Corporate administrative costs and assets are not allocated to the operating segments. However, operating segments are billed for the direct use of corporate services. Nonbillable costs remain at the corporate level in “All Other.” Earnings by major operating area for the three-month period ended March 31, 2013, and 2012, are presented in the following table:

Segment Earnings	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Upstream
United States	$	1,132		$	1,529
International	4,784			4,642
Total Upstream	5,916			6,171
Downstream
United States	135			459
International	566			345
Total Downstream	701			804
Total Segment Earnings	6,617			6,975
All Other
Interest Income	21			20
Other	(460		)	(524		)
Net Income Attributable to Chevron Corporation	$	6,178		$	6,471

Segment Assets Segment assets do not include intercompany investments or intercompany receivables. “All Other” assets consist primarily of worldwide cash, cash equivalents, time deposits and marketable securities; real estate; information systems; mining operations; power generation businesses; energy services; alternative fuels; technology companies; and assets of the corporate administrative functions. Segment assets at March 31, 2013, and December 31, 2012, are as follows:

Segment Assets	At March 31 2013		At December 31 2012
	(Millions of dollars)
Upstream
United States	$	42,477	$	41,891
International	120,926		115,806
Goodwill	4,640		4,640
Total Upstream	168,043		162,337
Downstream
United States	23,982		23,023
International	20,958		20,024
Total Downstream	44,940		43,047
Total Segment Assets	212,983		205,384
All Other
United States	6,118		7,727
International	18,309		19,871
Total All Other	24,427		27,598
Total Assets — United States	72,577		72,641
Total Assets — International	160,193		155,701
Goodwill	4,640		4,640
Total Assets	$	237,410	$	232,982

11

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Segment Sales and Other Operating Revenues Segment sales and other operating revenues, including internal transfers, for the three-month period ended March 31, 2013, and 2012, are presented in the following table. Products are transferred between operating segments at internal product values that approximate market prices. Revenues for the upstream segment are derived primarily from the production and sale of crude oil and natural gas, as well as the sale of third-party production of natural gas. Revenues for the downstream segment are derived from the refining and marketing of petroleum products such as gasoline, jet fuel, gas oils, lubricants, residual fuel oils and other products derived from crude oil. This segment also generates revenues from the manufacture and sale of fuel and lubricant additives and the transportation and trading of refined products and crude oil. “All Other” activities include revenues from mining operations, power generation businesses, insurance operations, real estate activities, energy services, alternative fuels, and technology companies.

Sales and Other Operating Revenues	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Upstream
United States	$	6,267		$	6,201
International	12,911			14,515
Subtotal	19,178			20,716
Intersegment Elimination — United States	(4,194		)	(4,597		)
Intersegment Elimination — International	(8,356		)	(9,226		)
Total Upstream	6,628			6,893
Downstream
United States	20,430			22,684
International	27,178			29,250
Subtotal	47,608			51,934
Intersegment Elimination — United States	(11		)	(15		)
Intersegment Elimination — International	(16		)	(11		)
Total Downstream	47,581			51,908
All Other
United States	378			326
International	6			12
Subtotal	384			338
Intersegment Elimination — United States	(292		)	(231		)
Intersegment Elimination — International	(5		)	(12		)
Total All Other	87			95
Sales and Other Operating Revenues
United States	27,075			29,211
International	40,095			43,777
Subtotal	67,170			72,988
Intersegment Elimination — United States	(4,497		)	(4,843		)
Intersegment Elimination — International	(8,377		)	(9,249		)
Total Sales and Other Operating Revenues	$	54,296		$	58,896

12

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Note 6. Summarized Financial Data — Chevron U.S.A. Inc.

Chevron U.S.A. Inc. (CUSA) is a major subsidiary of Chevron Corporation. CUSA and its subsidiaries manage and operate most of Chevron’s U.S. businesses. Assets include those related to the exploration and production of crude oil, natural gas and natural gas liquids and those associated with refining, marketing, and supply and distribution of products derived from petroleum, excluding most of the regulated pipeline operations of Chevron. CUSA also holds the company’s investment in the Chevron Phillips Chemical Company LLC joint venture, which is accounted for using the equity method.

The summarized financial information for CUSA and its consolidated subsidiaries is as follows:

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Sales and other operating revenues	$	42,777	$	47,134
Costs and other deductions	41,717		45,106
Net income attributable to CUSA	889		1,364

	At March 31 2013		At December 31 2012
	(Millions of dollars)
Current assets	$	18,881	$	18,983
Other assets	52,804		52,082
Current liabilities	17,703		18,161
Other liabilities	26,689		26,472
Total CUSA net equity	$	27,293	$	26,432
Memo: Total debt	$	14,484	$	14,482

Note 7. Summarized Financial Data — Chevron Transport Corporation

Chevron Transport Corporation Limited (CTC), incorporated in Bermuda, is an indirect, wholly owned subsidiary of Chevron Corporation. CTC is the principal operator of Chevron’s international tanker fleet and is engaged in the marine transportation of crude oil and refined petroleum products. Most of CTC’s shipping revenue is derived from providing transportation services to other Chevron companies. Chevron Corporation has fully and unconditionally guaranteed this subsidiary’s obligations in connection with certain debt securities.

During 2012, CTC implemented legal reorganizations in which certain Chevron business units transferred assets out of CTC. The summarized financial information for CTC and its consolidated subsidiaries presented in this table below gives retroactive effect to the reorganizations as if they had occurred on January 1, 2012. However, the financial information in the following table may not reflect the financial position and operating results in the periods presented if the reorganization had occurred on that date. Summarized income statement information for CTC and its consolidated subsidiaries is as follows:

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Sales and other operating revenues	$	131		$	145
Costs and other deductions	172			183
Net loss attributable to CTC	(41		)	(38		)

13

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Summarized balance sheet information for CTC and its consolidated subsidiaries is as follows:

	At March 31 2013			At December 31 2012
	(Millions of dollars)
Current assets	$	212		$	199
Other assets	312			313
Current liabilities	210			154
Other liabilities	414			415
Total CTC net (deficit) equity	$	(100	)	$	(57	)

There were no restrictions on CTC’s ability to pay dividends or make loans or advances at March 31, 2013.

Note 8. Income Taxes

Taxes on income for the first quarter of 2013 were $4.0 billion, compared with $5.6 billion for the corresponding period in 2012. The associated effective tax rates (calculated as the amount of Income Tax Expense divided by Income Before Income Tax Expense) were 39 percent in 2013 and 46 percent in 2012.

The decrease in the effective tax rate between periods was driven by a lower effective tax rate in international upstream operations. The lower international upstream rate was primarily due to non-recurring tax benefits in the current period and foreign currency remeasurement impacts between periods.

Tax positions for Chevron and its subsidiaries and affiliates are subject to income tax audits by many tax jurisdictions throughout the world. For the company’s major tax jurisdictions, examinations of tax returns for certain prior tax years had not been completed as of March 31, 2013. For these jurisdictions, the latest years for which income tax examinations had been finalized were as follows: United States — 2007, Nigeria — 2000, Angola — 2001, Saudi Arabia — 2003 and Kazakhstan — 2007.

The company engages in ongoing discussions with tax authorities regarding the resolution of tax matters in the various jurisdictions. Both the outcome of these tax matters and the timing of resolution and/or closure of the tax audits are highly uncertain. However, it is reasonably possible that developments regarding tax matters in certain tax jurisdictions may result in significant increases or decreases in the company’s total unrecognized tax benefits within the next 12 months. Given the number of years that still remain subject to examination and the number of matters being examined in the various tax jurisdictions, the company is unable to estimate the range of possible adjustments to the balance of unrecognized tax benefits.

The company is currently assessing the potential impact of an August 2012 decision by the U.S. Court of Appeals for the Third Circuit that disallows the Historic Rehabilitation Tax Credits (HRTCs) claimed by an unrelated taxpayer. The company has claimed a significant amount of HRTCs on its U.S. federal income tax returns in open years, and it is reasonably possible that the specific findings from management's ongoing assessment and evaluation could result in a significant increase in the company's unrecognized tax benefit within the next 12 months.  Any such increase would impact the effective tax rate.

Note 9. Employee Benefits

Chevron has defined benefit pension plans for many employees. The company typically prefunds defined benefit plans as required by local regulations or in certain situations where prefunding provides economic advantages. In the United States, all qualified plans are subject to the Employee Retirement Income Security Act (ERISA) minimum funding standard. The company does not typically fund U.S. nonqualified pension plans that are not subject to funding requirements under laws and regulations because contributions to these pension plans may be less economic and investment returns may be less attractive than the company’s other investment alternatives.

The company also sponsors other postretirement (OPEB) plans that provide medical and dental benefits, as well as life insurance for some active and qualifying retired employees. The plans are unfunded, and the company and the retirees share the costs. Medical coverage for Medicare-eligible retirees in the company’s main U.S. medical plan is secondary to Medicare (including Part D) and the increase to the company contribution for retiree medical coverage is limited to no more than 4 percent each year. Certain life insurance benefits are paid by the company.

14

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The components of net periodic benefit costs for 2013 and 2012 are as follows:

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Pension Benefits
United States
Service cost	$	124		$	113
Interest cost	118			109
Expected return on plan assets	(175		)	(159		)
Amortization of prior service credits	—			(2		)
Amortization of actuarial losses	121			118
Settlement losses	57			74
Total United States	245			253
International
Service cost	48			44
Interest cost	77			79
Expected return on plan assets	(68		)	(66		)
Amortization of prior service costs	5			5
Amortization of actuarial losses	36			33
Total International	98			95
Net Periodic Pension Benefit Costs	$	343		$	348
Other Benefits*
Service cost	$	18		$	15
Interest cost	40			39
Amortization of prior service credits	(12		)	(18		)
Amortization of actuarial losses	13			15
Settlement gains	—			(26		)
Net Periodic Other Benefit Costs	$	59		$	25

_________________________________

* Includes costs for U.S. and international OPEB plans. Obligations for plans outside the United States are not significant relative to the company’s total OPEB obligation.

The company has estimated it would contribute $1.0 billion to employee pension plans during 2013 (composed of $650 million for the U.S. plans and $350 million for the international plans). Through March 31, 2013, a total of $238 million was contributed (including $196 million to the U.S. plans). Actual contribution amounts are dependent upon plan investment returns, changes in pension obligations, regulatory requirements and other economic factors. Additional funding may ultimately be required if investment returns are insufficient to offset increases in plan obligations.

During the first three months of 2013, the company contributed $51 million to its OPEB plans. The company anticipates contributing approximately $177 million during the remainder of 2013.

Note 10. Litigation

MTBE Chevron and many other companies in the petroleum industry have used methyl tertiary butyl ether (MTBE) as a gasoline additive. Chevron is a party to six pending lawsuits and claims, the majority of which involve numerous other petroleum marketers and refiners. Resolution of these lawsuits and claims may ultimately require the company to correct or ameliorate the alleged effects on the environment of prior release of MTBE by the company or other parties. Additional lawsuits and claims related to the use of MTBE, including personal-injury claims, may be filed in the future. The company’s ultimate exposure related to pending lawsuits and claims is not determinable. The company no longer uses MTBE in the manufacture of gasoline in the United States.

15

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Ecuador Chevron is a defendant in a civil lawsuit initiated in the Superior Court of Nueva Loja in Lago Agrio, Ecuador, in May 2003 by plaintiffs who claim to be representatives of certain residents of an area where an oil production consortium formerly had operations. The lawsuit alleges damage to the environment from the oil exploration and production operations and seeks unspecified damages to fund environmental remediation and restoration of the alleged environmental harm, plus a health monitoring program. Until 1992, Texaco Petroleum Company (Texpet), a subsidiary of Texaco Inc., was a minority member of this consortium with Petroecuador, the Ecuadorian state-owned oil company, as the majority partner; since 1990, the operations have been conducted solely by Petroecuador. At the conclusion of the consortium and following an independent third-party environmental audit of the concession area, Texpet entered into a formal agreement with the Republic of Ecuador and Petroecuador for Texpet to remediate specific sites assigned by the government in proportion to Texpet’s ownership share of the consortium. Pursuant to that agreement, Texpet conducted a three-year remediation program at a cost of $40 million. After certifying that the sites were properly remediated, the government granted Texpet and all related corporate entities a full release from any and all environmental liability arising from the consortium operations.

Based on the history described above, Chevron believes that this lawsuit lacks legal or factual merit. As to matters of law, the company believes first, that the court lacks jurisdiction over Chevron; second, that the law under which plaintiffs bring the action, enacted in 1999, cannot be applied retroactively; third, that the claims are barred by the statute of limitations in Ecuador; and, fourth, that the lawsuit is also barred by the releases from liability previously given to Texpet by the Republic of Ecuador and Petroecuador and by the pertinent provincial and municipal governments. With regard to the facts, the company believes that the evidence confirms that Texpet’s remediation was properly conducted and that the remaining environmental damage reflects Petroecuador’s failure to timely fulfill its legal obligations and Petroecuador’s further conduct since assuming full control over the operations.

In 2008, a mining engineer appointed by the court to identify and determine the cause of environmental damage, and to specify steps needed to remediate it, issued a report recommending that the court assess $18.9 billion, which would, according to the engineer, provide financial compensation for purported damages, including wrongful death claims, and pay for, among other items, environmental remediation, health care systems and additional infrastructure for Petroecuador. The engineer’s report also asserted that an additional$8.4 billion could be assessed against Chevron for unjust enrichment. In 2009, following the disclosure by Chevron of evidence that the judge participated in meetings in which businesspeople and individuals holding themselves out as government officials discussed the case and its likely outcome, the judge presiding over the case was recused. In 2010, Chevron moved to strike the mining engineer’s report and to dismiss the case based on evidence obtained through discovery in the United States indicating that the report was prepared by consultants for the plaintiffs before being presented as the mining engineer’s independent and impartial work and showing further evidence of misconduct. In August 2010, the judge issued an order stating that he was not bound by the mining engineer’s report and requiring the parties to provide their positions on damages within 45 days. Chevron subsequently petitioned for recusal of the judge, claiming that he had disregarded evidence of fraud and misconduct and that he had failed to rule on a number of motions within the statutory time requirement.

In September 2010, Chevron submitted its position on damages, asserting that no amount should be assessed against it. The plaintiffs’ submission, which relied in part on the mining engineer’s report, took the position that damages are between approximately $16 billion and $76 billion and that unjust enrichment should be assessed in an amount between approximately $5 billion and $38 billion. The next day, the judge issued an order closing the evidentiary phase of the case and notifying the parties that he had requested the case file so that he could prepare a judgment. Chevron petitioned to have that order declared a nullity in light of Chevron’s prior recusal petition, and because procedural and evidentiary matters remained unresolved. In October 2010, Chevron’s motion to recuse the judge was granted. A new judge took charge of the case and revoked the prior judge’s order closing the evidentiary phase of the case. On December 17, 2010, the judge issued an order closing the evidentiary phase of the case and notifying the parties that he had requested the case file so that he could prepare a judgment.

On February 14, 2011, the provincial court in Lago Agrio rendered an adverse judgment in the case. The court rejected Chevron’s defenses to the extent the court addressed them in its opinion. The judgment assessed

16

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

approximately $8.6 billion in damages and approximately $900 million as an award for the plaintiffs’ representatives. It also assessed an additional amount of approximately $8.6 billion in punitive damages unless the company issued a public apology within 15 days of the judgment, which Chevron did not do. On February 17, 2011, the plaintiffs appealed the judgment, seeking increased damages, and on March 11, 2011, Chevron appealed the judgment seeking to have the judgment nullified. On January 3, 2012, an appellate panel in the provincial court affirmed the February 14, 2011 decision and ordered that Chevron pay additional attorneys’ fees in the amount of “0.10% of the values that are derived from the decisional act of this judgment.” The plaintiffs filed a petition to clarify and amplify the appellate decision on January 6, 2012, and the court issued a ruling in response on January 13, 2012, purporting to clarify and amplify its January 3, 2012 ruling, which included clarification that the deadline for the company to issue a public apology to avoid the additional amount of approximately $8.6 billion in punitive damages was within 15 days of the clarification ruling, or February 3, 2012. Chevron did not issue an apology because doing so might be mischaracterized as an admission of liability and would be contrary to facts and evidence submitted at trial. On January 20, 2012, Chevron appealed (called a petition for cassation) the appellate panel’s decision to Ecuador’s National Court of Justice. As part of the appeal, Chevron requested the suspension of any requirement that Chevron post a bond to prevent enforcement under Ecuadorian law of the judgment during the cassation appeal. On February 17, 2012, the appellate panel of the provincial court admitted Chevron’s cassation appeal in a procedural step necessary for the National Court of Justice to hear the appeal. The provincial court appellate panel denied Chevron’s request for suspension of the requirement that Chevron post a bond and stated that it would not comply with the First and Second Interim Awards of the international arbitration tribunal discussed below. On March 29, 2012, the matter was transferred from the provincial court to the National Court of Justice, and on November 22, 2012, the National Court agreed to hear Chevron's cassation appeal. On August 3, 2012, the provincial court in Lago Agrio approved a court-appointed liquidator’s report on damages that calculated the total judgment in the case to be $19.1 billion.

Chevron has no assets in Ecuador and the Lago Agrio plaintiffs’ lawyers have stated in press releases and through other media that they will seek to enforce the Ecuadorian judgment in various countries and otherwise disrupt Chevron’s operations. On May 30, 2012, the Lago Agrio plaintiffs filed an action against Chevron Corporation, Chevron Canada Limited, and Chevron Canada Finance Limited in the Ontario Superior Court of Justice in Ontario, Canada, seeking to recognize and enforce the Ecuadorian judgment. On May 1, 2013, the Ontario Superior Court of Justice stayed this action, subject to the plaintiffs presenting new evidence that Chevron Corporation has a presence in Ontario. On June 27, 2012, the Lago Agrio plaintiffs filed an action against Chevron Corporation in the Superior Court of Justice in Brasilia, Brazil, seeking to recognize and enforce the Ecuadorian judgment. On October 15, 2012, the provincial court in Lago Agrio issued an ex parte embargo order that purports to order the seizure of assets belonging to separate Chevron subsidiaries in Ecuador, Argentina and Colombia. On November 6, 2012, at the request of the Lago Agrio plaintiffs, a court in Argentina issued a Freeze Order against Chevron Argentina S.R.L. and another Chevron subsidiary, Ingeniero Nortberto Priu, requiring shares of both companies to be "embargoed," requiring third parties to withhold 40 percent of any payments due to Chevron Argentina S.R.L. and ordering banks to withhold 40 percent of the funds in Chevron Argentina S.R.L. bank accounts. On December 14th, 2012, the Argentinean court rejected a motion to revoke the Freeze Order but modified it by ordering that third parties are not required to withhold funds but must report their payments. The court also clarified that the Freeze Order relating to bank accounts excludes taxes. On January 30, 2013, an appellate court upheld the Freeze Order. Chevron continues to believe the provincial court’s judgment is illegitimate and unenforceable in Ecuador, the United States and other countries. The company also believes the judgment is the product of fraud, and contrary to the legitimate scientific evidence. Chevron cannot predict the timing or ultimate outcome of the appeals process in Ecuador or any enforcement action. Chevron expects to continue a vigorous defense of any imposition of liability in the Ecuadorian courts and to contest and defend any and all enforcement actions.

Chevron and Texpet filed an arbitration claim in September 2009 against the Republic of Ecuador before an arbitral tribunal presiding in the Permanent Court of Arbitration in The Hague under the Rules of the United Nations Commission on International Trade Law. The claim alleges violations of the Republic of Ecuador’s obligations under the United States–Ecuador Bilateral Investment Treaty (BIT) and breaches of the settlement

17

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

and release agreements between the Republic of Ecuador and Texpet (described above), which are investment agreements protected by the BIT. Through the arbitration, Chevron and Texpet are seeking relief against the Republic of Ecuador, including a declaration that any judgment against Chevron in the Lago Agrio litigation constitutes a violation of Ecuador’s obligations under the BIT. On February 9, 2011, the Tribunal issued an Order for Interim Measures requiring the Republic of Ecuador to take all measures at its disposal to suspend or cause to be suspended the enforcement or recognition within and without Ecuador of any judgment against Chevron in the Lago Agrio case pending further order of the Tribunal. On January 25, 2012, the Tribunal converted the Order for Interim Measures into an Interim Award. Chevron filed a renewed application for further interim measures on January 4, 2012, and the Republic of Ecuador opposed Chevron’s application and requested that the existing Order for Interim Measures be vacated on January 9, 2012. On February 16, 2012, the Tribunal issued a Second Interim Award mandating that the Republic of Ecuador take all measures necessary (whether by its judicial, legislative or executive branches) to suspend or cause to be suspended the enforcement and recognition within and without Ecuador of the judgment against Chevron and, in particular, to preclude any certification by the Republic of Ecuador that would cause the judgment to be enforceable against Chevron. On February 27, 2012, the Tribunal issued a Third Interim Award confirming its jurisdiction to hear Chevron’s arbitration claims. On April 9, 2012, the Tribunal issued a scheduling order to hear issues relating to the scope of the settlement and release agreements between the Republic of Ecuador and Texpet, and on July 9, 2012, the Tribunal indicated that it wanted to hear the remaining issues in January 2014. On February 7, 2013, the Tribunal issued its Fourth Interim Award in which it declared that the Republic of Ecuador “has violated the First and Second Interim Awards under the [BIT], the UNCITRAL Rules and international law in regard to the finalization and enforcement subject to execution of the Lago Agrio Judgment within and outside Ecuador, including (but not limited to) Canada, Brazil and Argentina.” A schedule for the Tribunal’s order to show cause hearing will be issued separately.

Through a series of U.S. court proceedings initiated by Chevron to obtain discovery relating to the Lago Agrio litigation and the BIT arbitration, Chevron obtained evidence that it believes shows a pattern of fraud, collusion, corruption, and other misconduct on the part of several lawyers, consultants and others acting for the Lago Agrio plaintiffs. In February 2011, Chevron filed a civil lawsuit in the Federal District Court for the Southern District of New York against the Lago Agrio plaintiffs and several of their lawyers, consultants and supporters, alleging violations of the Racketeer Influenced and Corrupt Organizations Act and other state laws. Through the civil lawsuit, Chevron is seeking relief that includes an award of damages and a declaration that any judgment against Chevron in the Lago Agrio litigation is the result of fraud and other unlawful conduct and is therefore unenforceable. On March 7, 2011, the Federal District Court issued a preliminary injunction prohibiting the Lago Agrio plaintiffs and persons acting in concert with them from taking any action in furtherance of recognition or enforcement of any judgment against Chevron in the Lago Agrio case pending resolution of Chevron’s civil lawsuit by the Federal District Court. On May 31, 2011, the Federal District Court severed claims one through eight of Chevron’s complaint from the ninth claim for declaratory relief and imposed a discovery stay on claims one through eight pending a trial on the ninth claim for declaratory relief. On September 19, 2011, the U.S. Court of Appeals for the Second Circuit vacated the preliminary injunction, stayed the trial on Chevron’s ninth claim, a claim for declaratory relief, that had been set for November 14, 2011, and denied the defendants’ mandamus petition to recuse the judge hearing the lawsuit. The Second Circuit issued its opinion on January 26, 2012 ordering the dismissal of Chevron’s ninth claim for declaratory relief. On February 16, 2012, the Federal District Court lifted the stay on claims one through eight, and on October 18, 2012, the Federal District Court set a trial date of October 15, 2013. On March 22, 2013, Chevron settled its claims against Stratus Consulting, and on April 12, 2013 sworn declarations by representatives of Stratus Consulting were filed with the Court admitting their role and that of the plaintiffs' attorneys in drafting the environmental report of the mining engineer appointed by the provincial court in Lago Agrio.

The ultimate outcome of the foregoing matters, including any financial effect on Chevron, remains uncertain. Management does not believe an estimate of a reasonably possible loss (or a range of loss) can be made in this case. Due to the defects associated with the Ecuadorian judgment, the 2008 engineer’s report on alleged damages and the September 2010 plaintiffs’ submission on alleged damages, management does not believe these

18

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

documents have any utility in calculating a reasonably possible loss (or a range of loss). Moreover, the highly uncertain legal environment surrounding the case provides no basis for management to estimate a reasonably possible loss (or a range of loss).

Note 11. Other Contingencies and Commitments

Income Taxes The company calculates its income tax expense and liabilities quarterly. These liabilities generally are subject to audit and are not finalized with the individual taxing authorities until several years after the end of the annual period for which income taxes have been calculated. Refer to Note 8 on page 14 for a discussion of the periods for which tax returns have been audited for the company’s major tax jurisdictions.

As discussed on page 14, Chevron is currently assessing the potential impact of a decision by the U.S. Court of Appeals for the Third Circuit that disallows the Historic Rehabilitation Tax Credits claimed by an unrelated taxpayer. It is reasonably possible that the specific findings from this assessment could result in a significant increase in unrecognized tax benefits, which may have a material effect on the company's results of operations in any one reporting period. The company does not expect settlement of income tax liabilities associated with uncertain tax positions to have a material effect on its consolidated financial position or liquidity.

Guarantees The company and its subsidiaries have certain other contingent liabilities with respect to guarantees, direct or indirect, of debt of affiliated companies or third parties. Under the terms of the guarantee arrangements, the company would generally be required to perform should the affiliated company or third party fail to fulfill its obligations under the arrangements. In some cases, the guarantee arrangements may have recourse provisions that would enable the company to recover any payments made under the terms of the guarantees from assets provided as collateral.

Indemnifications In the acquisition of Unocal, the company assumed certain indemnities relating to contingent environmental liabilities associated with assets that were sold in 1997. The acquirer of those assets shared in certain environmental remediation costs up to a maximum obligation of $200 million, which had been reached at December 31, 2009. Under the indemnification agreement, after reaching the $200 million obligation, Chevron is solely responsible until April 2022, when the indemnification expires. The environmental conditions or events that are subject to these indemnities must have arisen prior to the sale of the assets in 1997.

Although the company has provided for known obligations under this indemnity that are probable and reasonably estimable, the amount of additional future costs may be material to results of operations in the period in which they are recognized. The company does not expect these costs will have a material effect on its consolidated financial position or liquidity.

Off-Balance-Sheet Obligations The company and its subsidiaries have certain other contingent liabilities with respect to long-term unconditional purchase obligations and commitments, including throughput and take-or-pay agreements, some of which relate to suppliers’ financing arrangements. The agreements typically provide goods and services, such as pipeline and storage capacity, drilling rigs, utilities, and petroleum products, to be used or sold in the ordinary course of the company’s business.

Environmental The company is subject to loss contingencies pursuant to laws, regulations, private claims and legal proceedings related to environmental matters that are subject to legal settlements or that in the future may require the company to take action to correct or ameliorate the effects on the environment of prior release of chemicals or petroleum substances, including MTBE, by the company or other parties. Such contingencies may exist for various sites, including, but not limited to, federal Superfund sites and analogous sites under state laws, refineries, crude oil fields, service stations, terminals, land development areas, and mining operations, whether operating, closed or divested. These future costs are not fully determinable due to such factors as the unknown magnitude of possible contamination, the unknown timing and extent of the corrective actions that may be required, the determination of the company’s liability in proportion to other responsible parties, and the extent to which such costs are recoverable from third parties.

Although the company has provided for known environmental obligations that are probable and reasonably estimable, the amount of additional future costs may be material to results of operations in the period in which

19

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

they are recognized. The company does not expect these costs will have a material effect on its consolidated financial position or liquidity. Also, the company does not believe its obligations to make such expenditures have had, or will have, any significant impact on the company’s competitive position relative to other U.S. or international petroleum or chemical companies.

Other Contingencies On April 26, 2010, a California appeals court issued a ruling related to the adequacy of an Environmental Impact Report (EIR) supporting the issuance of certain permits by the city of Richmond, California, to replace and upgrade certain facilities at Chevron's refinery in Richmond. Settlement discussions with plaintiffs in the case ended late fourth quarter 2010, and on March 3, 2011, the trial court entered a final judgment and peremptory writ ordering the City to set aside the project EIR and conditional use permits and enjoining Chevron from any further work. On May 23, 2011, the company filed an application with the City Planning Department for a conditional use permit for a revised project to complete construction of the hydrogen plant, certain sulfur removal facilities and related infrastructure. On June 10, 2011, the City published its Notice of Preparation of the revised EIR for the project. The revised and recirculated EIR is intended to comply with the appeals court decision. Management believes the outcomes associated with the project are uncertain. Due to the uncertainty of the company's future course of action, or potential outcomes of any action or combination of actions, management does not believe an estimate of the financial effects, if any, can be made at this time.

Chevron receives claims from and submits claims to customers; trading partners; U.S. federal, state and local regulatory bodies; governments; contractors; insurers; and suppliers. The amounts of these claims, individually and in the aggregate, may be significant and take lengthy periods to resolve.

The company and its affiliates also continue to review and analyze their operations and may close, abandon, sell, exchange, acquire or restructure assets to achieve operational or strategic benefits and to improve competitiveness and profitability. These activities, individually or together, may result in gains or losses in future periods.

Note 12. Fair Value Measurements

Accounting standards for fair value measurement (ASC 820) establish a framework for measuring fair value and stipulate disclosures about fair value measurements. The standards apply to recurring and nonrecurring fair value measurements of financial and nonfinancial assets and liabilities. Among the required disclosures is the fair value hierarchy of inputs the company uses to value an asset or a liability. The three levels of the fair value hierarchy are described as follows:

Level 1: Quoted prices (unadjusted) in active markets for identical assets and liabilities. For the company, Level 1 inputs include exchange-traded futures contracts for which the parties are willing to transact at the exchange-quoted price and marketable securities that are actively traded.

Level 2: Inputs other than Level 1 that are observable, either directly or indirectly. For the company, Level 2 inputs include quoted prices for similar assets or liabilities, prices obtained through third-party broker quotes and prices that can be corroborated with other observable inputs for substantially the complete term of a contract.

Level 3: Unobservable inputs. The company does not use Level 3 inputs for any of its recurring fair value measurements. Level 3 inputs may be required for the determination of fair value associated with certain nonrecurring measurements of nonfinancial assets and liabilities.

20

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The fair value hierarchy for assets and liabilities measured at fair value on a recurring basis at March 31, 2013 and December 31, 2012 is as follows:

Assets and Liabilities Measured at Fair Value on a Recurring Basis

(Millions of dollars)

	At March 31, 2013								At December 31, 2012
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Marketable Securities	$	266	$	266	$	—	$	—	$	266	$	266	$	—	$	—
Derivatives	64		2		62		—		86		21		65		—
Total Assets at Fair Value	$	330	$	268	$	62	$	—	$	352	$	287	$	65	$	—
Derivatives	110		106		4		—		149		148		1		—
Total Liabilities at Fair Value	$	110	$	106	$	4	$	—	$	149	$	148	$	1	$	—

Marketable Securities The company calculates fair value for its marketable securities based on quoted market prices for identical assets. The fair values reflect the cash that would have been received if the instruments were sold at March 31, 2013.

Derivatives The company records its derivative instruments — other than any commodity derivative contracts that are designated as normal purchase and normal sale — on the Consolidated Balance Sheet at fair value, with the offsetting amount to the Consolidated Statement of Income. For derivatives with identical or similar provisions as contracts that are publicly traded on a regular basis, the company uses the market values of the publicly traded instruments as an input for fair value calculations.

The company’s derivative instruments principally include futures, swaps, options and forward contracts for crude oil, natural gas and refined products. Derivatives classified as Level 1 include futures, swaps and options contracts traded in active markets such as the New York Mercantile Exchange.

Derivatives classified as Level 2 include swaps, options and forward contracts principally with financial institutions and other oil and gas companies, the fair values of which are obtained from third-party broker quotes, industry pricing services and exchanges. The company obtains multiple sources of pricing information for the Level 2 instruments. Since this pricing information is generated from observable market data, it has historically been very consistent. The company does not materially adjust this information. The company incorporates internal review, evaluation and assessment procedures, including a comparison of Level 2 fair values derived from the company’s internally developed forward curves (on a sample basis), with the pricing information to document reasonable, logical and supportable fair value determinations and proper level of classification.

Assets carried at fair value at March 31, 2013, and December 31, 2012, are as follows:

Cash and Cash Equivalents and Time Deposits The company holds cash equivalents and bank time deposits in U.S. and non-U.S. portfolios. The instruments classified as cash equivalents are primarily bank time deposits with maturities of 90 days or less, and money market funds. “Cash and cash equivalents” had carrying/fair values of $17.4 billion and $20.9 billion at March 31, 2013, and December 31, 2012, respectively. The instruments held in “Time deposits” are bank time deposits with maturities greater than 90 days and had carrying/fair values of $1.4 billion and $0.7 billion at March 31, 2013, and December 31, 2012, respectively. The fair values of cash, cash equivalents and bank time deposits are classified as Level 1 and reflect the cash that would have been received if the instruments were settled at March 31, 2013.

Restricted Cash had a carrying/fair value of $1.1 billion and $1.5 billion at March 31, 2013, and December 31, 2012, respectively. At March 31, 2013, restricted cash is classified as Level 1 and is reported in “Deferred charges and other assets” on the face of the Consolidated Balance Sheet, and includes restricted funds related to certain Upstream abandonment activities, tax payments, funds held in escrow for an asset acquisition and a capital investment project.

21

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The carrying values of other short-term financial assets and liabilities, including short-term debt reclassified to long-term, on the consolidated balance sheet approximate their fair values. Fair value remeasurements of other financial instruments at March 31, 2013 and 2012 were not material.

The fair value hierarchy for assets and liabilities measured at fair value on a nonrecurring basis at March 31, 2013 is as follows:

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

(Millions of dollars)

	At March 31, 2013
	Total		Level 1		Level 2		Level 3		Before-Tax Loss
Properties, plant and equipment, net (held and used)	$	—	$	—	$	—	$	—	$	4
Properties, plant and equipment, net (held for sale)	104		—		—		104		78
Investments and advances	—		—		—		—		—
Total Assets at Fair Value	$	104	$	—	$	—	$	104	$	82

Properties, plant and equipment The company did not have any material impairments of long-lived assets measured at fair value on a nonrecurring basis to report in first quarter2013.

Investments and advances The company did not have any impairments of investments and advances measured at fair value on a nonrecurring basis to report in first quarter2013.

Note 13. Derivative Instruments and Hedging Activities

The company’s derivative instruments principally include crude oil, natural gas and refined product futures, swaps, options, and forward contracts. None of the company’s derivative instruments is designated as a hedging instrument, although certain of the company’s affiliates make such a designation. The company’s derivatives are not material to the company’s financial position, results of operations or liquidity. The company believes it has no material market or credit risks to its operations, financial position or liquidity as a result of its commodities and other derivatives activities.

Derivative instruments measured at fair value at March 31, 2013, and December 31, 2012, and their classification on the Consolidated Balance Sheet and Consolidated Statement of Income are as follows:

Consolidated Balance Sheet: Fair Value of Derivatives Not Designated as Hedging Instruments

(Millions of Dollars)

Type of Contract	Balance Sheet Classification	At March 31 2013		At December 31 2012
Commodity	Accounts and notes receivable, net	$	41	$	57
Commodity	Long-term receivables, net	23		29
Total Assets at Fair Value		$	64	$	86
Commodity	Accounts payable	$	77	$	112
Commodity	Deferred credits and other noncurrent obligations	33		37
Total Liabilities at Fair Value		$	110	$	149

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Consolidated Statement of Income: The Effect of Derivatives Not Designated as Hedging Instruments

(Millions of dollars)

		Gain / (Loss) Three Months Ended March 31
Type of Contract	Statement of Income Classification	2013			2012
Commodity	Sales and other operating revenues	$	(75	)	$	(118	)
Commodity	Purchased crude oil and products	(4		)	(19		)
Commodity	Other income	(1		)	5
		$	(80	)	$	(132	)

The table below represents gross and net derivative assets and liabilities subject to netting agreements on the Statement of Financial Position at March 31, 2013.

Consolidated Balance Sheet: The Effect of Netting Derivative Assets and Liabilities

(Millions of dollars)

	At March 31, 2013
	Gross Amount Recognized		Gross Amounts Offset in Statement of Financial Position		Net Amounts Presented in the Statement of Financial Position		Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments		Net Amount
Derivative Assets	$	999	$	935	$	64	$	57	$	7
Derivative Liabilities	$	1,045	$	935	$	110	$	12	$	98

Derivative assets and liabilities are classified on the Consolidated Balance Sheet as short-term and long-term accounts receivable and accounts payable.

The company uses derivative commodity instruments traded on the New York Mercantile Exchange and on electronic platforms of the Inter-Continental Exchange and Chicago Mercantile Exchange. In addition, the company enters into swap contracts and option contracts principally with major financial institutions and other oil and gas companies in the “over-the-counter” markets which are governed by International Swaps and Derivatives Association agreements and other master netting arrangements. Amounts not offset on the Consolidated Balance sheet represent positions that do not meet all the conditions for "a right of offset".

Note 14. Long-Term Debt

The net carrying value of long-term debt, excluding amounts reclassified from short-term, at March 31, 2013, and December 31, 2012 is $6.0 billion and $6.1 billion, respectively. The fair value of long-term debt at March 31, 2013, and December 31, 2012 is $6.6 billion and $6.8 billion, respectively. Long-term debt primarily includes corporate issued bonds. The fair value of corporate bonds is $5.8 billion and classified as Level 1. The fair value of the other bonds is $0.8 billion and classified as Level 2.

Note 15. Accounting for Suspended Exploratory Wells

Accounting standards for the costs of exploratory wells (ASC 932) provide that exploratory well costs continue to be capitalized after the completion of drilling when (a) the well has found a sufficient quantity of reserves to justify its completion as a producing well and (b) the entity is making sufficient progress assessing the reserves and the economic and operating viability of the project. If either condition is not met or if an entity obtains information that raises substantial doubt about the economic or operational viability of the project, the exploratory well would be assumed to be impaired, and its costs, net of any salvage value, would be charged to expense. (Note that an entity is not required to complete the exploratory well as a producing well.) The company’s capitalized cost of suspended wells at March 31, 2013, was $2.9 billion, a net increase of $220 million from year-end 2012, primarily due to drilling activities in the United States, Australia and Canada.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

First Quarter 2013 Compared with First Quarter 2012

Key Financial Results

Earnings by Business Segment

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Upstream
United States	$	1,132		$	1,529
International	4,784			4,642
Total Upstream	5,916			6,171
Downstream
United States	135			459
International	566			345
Total Downstream	701			804
Total Segment Earnings	6,617			6,975
All Other	(439		)	(504		)
Net Income Attributable to Chevron Corporation (1) (2)	$	6,178		$	6,471
____________________
(1) Includes foreign currency effects	$	246		$	(228	)
(2) Also referred to as “earnings” in the discussions that follow.

Net income attributable to Chevron Corporation for first quarter2013 was $6.2 billion ($3.18 per share — diluted), compared with $6.5 billion ($3.27 per share — diluted) in the corresponding 2012 period.

Upstream earnings in first quarter2013 were $5.9 billion, compared with $6.2 billion in the 2012 quarter. The decrease was due to lower crude oil realizations and volumes, partially offset by favorable tax items and lower exploration expense.

Downstream earnings were $701 million in first quarter2013, compared with $804 million in the year-earlier period. The decline was mainly due to the absence of 2012 gains on asset sales and higher operating expenses, partially offset by higher margins.

Refer to pages 28 through 30 for additional discussion of results by business segment and “All Other” activities for first quarter2013 versus the same period in 2012.

Business Environment and Outlook

Chevron is a global energy company with substantial business activities in the following countries: Angola, Argentina, Australia, Azerbaijan, Bangladesh, Brazil, Cambodia, Canada, Chad, China, Colombia, Democratic Republic of the Congo, Denmark, Indonesia, Kazakhstan, Myanmar, the Netherlands, Nigeria, Norway, the Partitioned Zone between Saudi Arabia and Kuwait, the Philippines, Republic of the Congo, Singapore, South Africa, South Korea, Thailand, Trinidad and Tobago, the United Kingdom, the United States, Venezuela, and Vietnam.

Earnings of the company depend mostly on the profitability of its upstream and downstream business segments. The biggest factor affecting the results of operations for the company is the level of the price of crude oil. In the downstream business, crude oil is the largest cost component of refined products. Seasonality is not a primary driver of changes in the company’s quarterly earnings during the year.

To sustain its long-term competitive position in the upstream business, the company must develop and replenish an inventory of projects that offer attractive financial returns for the investment required. Identifying promising

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areas for exploration, acquiring the necessary rights to explore for and to produce crude oil and natural gas, drilling successfully, and handling the many technical and operational details in a safe and cost-effective manner are all important factors in this effort. Projects often require long lead times and large capital commitments.

The company’s operations, especially upstream, can also be affected by changing economic, regulatory and political environments in the various countries in which it operates, including the United States. From time to time, certain governments have sought to renegotiate contracts or impose additional costs on the company. Governments may attempt to do so in the future. Civil unrest, acts of violence or strained relations between a government and the company or other governments may impact the company’s operations or investments. Those developments have at times significantly affected the company’s operations and results and are carefully considered by management when evaluating the level of current and future activity in such countries.

The company continually evaluates opportunities to dispose of assets that are not expected to provide sufficient long-term value or to acquire assets or operations complementary to its asset base to help augment the company’s financial performance and growth. Refer to the “Results of Operations” section, beginning on page 28, for discussions of net gains on asset sales during 2013. Asset dispositions and restructurings may also occur in future periods and could result in significant gains or losses.

The company closely monitors developments in the financial and credit markets, the level of worldwide economic activity, and the implications for the company of movements in prices for crude oil and natural gas. Management takes these developments into account in the conduct of daily operations and for business planning.

Comments related to earnings trends for the company’s major business areas are as follows:

Upstream Earnings for the upstream segment are closely aligned with industry price levels for crude oil and natural gas. Crude oil and natural gas prices are subject to external factors over which the company has no control, including product demand connected with global economic conditions, industry production and inventory levels, production quotas imposed by the Organization of Petroleum Exporting Countries (OPEC), weather-related damage and disruptions, competing fuel prices, and regional supply interruptions or fears thereof that may be caused by military conflicts, civil unrest or political uncertainty. Any of these factors could also inhibit the company’s production capacity in an affected region. The company closely monitors developments in the countries in which it operates and holds investments, and seeks to manage risks in operating its facilities and businesses. The longer-term trend in earnings for the upstream segment is also a function of other factors, including the company’s ability to find or acquire and efficiently produce crude oil and natural gas, changes in fiscal terms of contracts, and changes in tax laws and regulations.

The company continues to actively manage its schedule of work, contracting, procurement and supply-chain activities to effectively manage costs. However, price levels for capital and exploratory costs and operating expenses associated with the production of crude oil and natural gas can be subject to external factors beyond the company’s control. External factors include not only the general level of inflation, but also commodity prices and prices charged by the industry’s material and service providers, which can be affected by the volatility of the industry’s own supply-and-demand conditions for such materials and services. Capital and exploratory expenditures and operating expenses can also be affected by damage to production facilities caused by severe weather or civil unrest.

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The chart above shows the trend in benchmark prices for Brent crude oil, West Texas Intermediate (WTI) crude oil, and U.S. Henry Hub natural gas. The Brent price averaged $112 per barrel for the full-year 2012. During first quarter2013, Brent averaged $113 per barrel and ended April at about $101. The most recent price for Brent-related crudes in the Atlantic Basin declined as a result of negative economic developments, high refinery maintenance in Europe and higher North Sea production. The majority of the company’s equity crude production is priced based on the Brent benchmark. The WTI price averaged $94 per barrel for the full-year 2012. During first quarter2013, WTI averaged $94 per barrel and ended April at about $93. WTI traded at a discount to Brent throughout 2012 and first quarter 2013 due to high inventories and excess crude supply in the U.S. midcontinent market.

A differential in crude oil prices exists between high quality (high-gravity, low-sulfur) crudes and those of lower quality (low-gravity, high-sulfur). The amount of the differential in any period is associated with the supply of heavy crude versus the demand, which is a function of the capacity of refineries that are able to process this lower quality feedstock into light products (motor gasoline, jet fuel, aviation gasoline and diesel fuel). The differential eased globally in the first quarter 2013. In the United States, light sweet crude oil production in the midcontinent region remained robust and outbound capacity at Cushing remained constrained. Outside of the United States, heavy refinery maintenance schedules in Europe and elsewhere reduced demand and price support for light sweet crudes.

Chevron produces or shares in the production of heavy crude oil in California, Chad, Indonesia, the Partitioned Zone between Saudi Arabia and Kuwait, Venezuela and in certain fields in Angola, China and the United Kingdom sector of the North Sea. (See page 33 for the company’s average U.S. and international crude oil realizations.)

In contrast to price movements in the global market for crude oil, price changes for natural gas in many regional markets are more closely aligned with supply-and-demand conditions in those markets. In the United States, prices at Henry Hub averaged $3.45 per thousand cubic feet (MCF) in the first three months of 2013, compared with $2.47 during the first three months of 2012. At the end of April2013, the Henry Hub spot price was $4.28 per MCF. Fluctuations in the price for natural gas in the United States are closely associated with customer demand relative to the volumes produced in North America.

Outside the United States, price changes for natural gas depend on a wide range of supply, demand and regulatory circumstances. In some locations, Chevron is investing in long-term projects to install infrastructure to produce and liquefy natural gas for transport by tanker to other markets. International natural gas realizations averaged $6.07 per MCF during the first three months of 2013, compared with $5.88 in the same period last year. (See page 33 for the company’s average natural gas realizations for the U.S. and international regions.)

The company’s worldwide net oil-equivalent production in the first three months of 2013 averaged 2.645 million barrels per day. About one-fifth of the company’s net oil-equivalent production in the first three months of 2013 occurred in the OPEC-member countries of Angola, Nigeria, Venezuela and the Partitioned Zone between Saudi Arabia and Kuwait. OPEC quotas had no effect on the company’s net crude oil production for first quarter2013 or 2012. At their December 2012 meeting, members of OPEC supported maintaining the current production quota of 30 million barrels per day, which has been in effect since December 2008.

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The company estimates that oil-equivalent production in 2013 will average approximately 2.650 million barrels per day based on a Brent price of $112 per barrel. This estimate is subject to many factors and uncertainties, including quotas that may be imposed by OPEC, price effects on entitlement volumes, changes in fiscal terms or restrictions on the scope of company operations, delays in project startups or ramp-ups, fluctuations in demand for natural gas in various markets, weather conditions that may shut in production, civil unrest, changing geopolitics, delays in completion of maintenance turnarounds, greater-than-expected declines in production from mature fields, or other disruptions to operations. The outlook for future production levels is also affected by the size and number of economic investment opportunities and, for new, large-scale projects, the time lag between initial exploration and the beginning of production. Investments in upstream projects generally begin well in advance of the start of the associated crude oil and natural gas production. A significant majority of Chevron’s upstream investment is made outside the United States.

On November 7, 2011, while drilling a development well in the deepwater Frade Field about 75 miles offshore Brazil, an unanticipated pressure spike caused oil to migrate from the well bore through a series of fissures to the sea floor, emitting approximately 2,400 barrels of oil. The source of the seep was substantially contained within four days and the well was plugged and abandoned. No evidence of any coastal or wildlife impacts related to this seep has emerged. On March 14, 2012, the company identified a small, second seep in a different part of the field. As a precautionary measure, the company and its partners decided to temporarily suspend field production and received approval from Brazil’s National Petroleum Agency (ANP) to do so. Chevron and its partners are cooperating with the Brazilian authorities. On July 19, 2012, ANP issued its final investigative report on the November 2011 incident. On April 8, 2013, ANP approved a plan for partial restoration of production in the Frade Field. A Brazilian federal district prosecutor filed two civil lawsuits seeking $10.7 billion in damages for each of the two seeps. The company is not aware of any basis for damages to be awarded in any civil lawsuit. On July 31, 2012, a court presiding over the civil litigation entered a preliminary injunction barring Chevron from conducting oil production and transportation activities in Brazil pending completion of the legal proceedings commenced by the federal district prosecutor and the ongoing proceedings of ANP and the Brazilian environment and natural resources regulatory agency. On September 28, 2012, the injunction was modified to clarify that Chevron may continue its containment and mitigation activities under supervision of ANP. On appeal, on November 27, 2012, the injunction was revoked in its entirety.The federal district prosecutor also filed criminal charges against 11 Chevron employees. Jurisdiction for all three matters was moved from Campos to a court in Rio de Janeiro. On February 19, 2013, the court dismissed the criminal matter, which is being appealed by the prosecutor. The company’s ultimate exposure related to the incident is not currently determinable, but could be significant to net income in any one period.

The company has entered into a nonbinding financing term sheet with Petroboscan, a joint stock company owned 39.2 percent by Chevron, which operates the Boscan Field in Venezuela. When finalized, the financing is expected to occur in stages over a limited drawdown period and is intended to support a specific work program to maintain and increase production to an agreed-upon level. The terms are designed to support cash needs for ongoing operations and new development, as well as distributions to shareholders — including current outstanding obligations. The loan will be repaid from future Petroboscan crude sales. Definitive documents are under negotiation.

Refer to the “Results of Operations” section on pages 28 through 29 for additional discussion of the company’s upstream business.

Downstream Earnings for the downstream segment are closely tied to margins on the refining, manufacturing and marketing of products that include gasoline, diesel, jet fuel, lubricants, fuel oil, fuel and lubricant additives, and petrochemicals. Industry margins are sometimes volatile and can be affected by the global and regional supply-and-demand balance for refined products and petrochemicals and by changes in the price of crude oil, other refinery and petrochemical feedstocks, and natural gas. Industry margins can also be influenced by inventory levels, geopolitical events, costs of materials and services, refinery or chemical plant capacity utilization, maintenance programs, and disruptions at refineries or chemical plants resulting from unplanned outages due to severe weather, fires or other operational events.

Other factors affecting profitability for downstream operations include the reliability and efficiency of the company’s refining, marketing and petrochemical assets, the effectiveness of its crude oil and product supply

27

functions, and the volatility of tanker-charter rates for the company’s shipping operations, which are driven by the industry’s demand for crude oil and product tankers. Other factors beyond the company’s control include the general level of inflation and energy costs to operate the company’s refining, marketing and petrochemical assets.

The company’s most significant marketing areas are the West Coast of North America, the U.S. Gulf Coast, Asia and southern Africa. Chevron operates or has significant ownership interests in refineries in each of these areas.

Refer to the “Results of Operations” section on pages 29 through 30 for additional discussion of the company’s downstream operations.

All Other consists of mining operations, power generation businesses, worldwide cash management and debt financing activities, corporate administrative functions, insurance operations, real estate activities, energy services, alternative fuels, and technology companies.

Operating Developments

Noteworthy operating developments for the upstream business in recent months included the following:

• Australia - Signed binding long-term Sales and Purchase Agreements with Chubu Electric Power Company for Wheatstone LNG. More than 80 percent of Chevron's equity LNG offtake from Wheatstone is covered under long-term agreements.

• Australia - Reached agreement to acquire interests in two onshore natural gas blocks in the Cooper Basin.

• Australia - Announced a natural gas discovery, Elfin-1, in the Carnarvon Basin in 50 percent-owned Block WA-268-P.

• Republic of Congo - Reached final investment decision on the deepwater Moho Nord joint development.

• United States - Announced a crude oil discovery at the Coronado prospect in the deepwater Gulf of Mexico.

• United States - Announced a successful production test of a St. Malo well in the deepwater Gulf of Mexico.

The company purchased $1.25 billion of its common stock in first quarter2013 under its share repurchase program.

Results of Operations

Business Segments The following section presents the results of operations for the company’s business segments — Upstream and Downstream — as well as for “All Other.” (Refer to Note 5, on page 10, for a discussion of the company’s “reportable segments,” as defined under the accounting standards for segment reporting.)

Upstream

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
U.S. Upstream Earnings	$	1,132	$	1,529

U.S. upstream earnings of $1.1 billion in first quarter2013 decreased $397 million from the same period last year. The decrease was primarily due to lower crude oil realizations of about $190 million and higher operating expenses of about $130 million.

The company’s average realization for U.S. crude oil and natural gas liquids in first quarter2013 was $94 per barrel, compared with $102 a year earlier. The average natural gas realization in first quarter2013 was $3.11 per thousand cubic feet, compared with $2.48 in the year-ago period.

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Net oil-equivalent production of 664,000 barrels per day in first quarter2013 was up 13,000 barrels per day, or about 2 percent, from a year earlier. The increase in production was primarily due to further ramp-up of projects in the Gulf of Mexico, the Marcellus Shale in western Pennsylvania and recently-acquired Delaware Basin properties in New Mexico, partially offset by normal field declines.

The net liquids component of oil-equivalent production of 455,000 barrels per day for first quarter2013 was largely unchanged from the corresponding 2012 period. Net natural gas production was 1.26 billion cubic feet per day in first quarter2013, an increase of 7 percent from first quarter 2012.

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
International Upstream Earnings*	$	4,784	$	4,642
____________________
*  Includes foreign currency effects	$	172	$	(208	)

International upstream earnings of $4.8 billion in first quarter2013 increased $142 million from the corresponding period in 2012. Lower crude oil volumes and realizations of $370 million and $230 million, respectively, were partially offset by favorable tax items of about $260 million and lower exploration expenses of approximately $140 million. Foreign currency effects increased earnings by $172 million in the 2013 quarter, compared with a decrease of $208 million a year earlier.

The average realization per barrel of crude oil and natural gas liquids in first quarter2013 was $102 compared with $110 in the corresponding 2012 period. The average natural gas realization per thousand cubic feet in first quarter2013 was $6.07 compared with $5.88 in the corresponding 2012 period.

International net oil-equivalent production of 1.98 million barrels per day in first quarter2013 was unchanged from a year ago. Production increases from project ramp-ups in Nigeria and improved operational efficiency at Tengizchevroil were largely offset by the continued shut-in of the Frade Field in Brazil, and normal field declines.

The net liquids component of oil-equivalent production of 1.31 million barrels per day in first quarter2013 decreased 2 percent from a year earlier. Net natural gas production totaled 4.05 billion cubic feet per day in first quarter2013, an increase of 5 percent from the 2012 period.

Downstream

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
U.S. Downstream Earnings	$	135	$	459

U.S. downstream earned $135 million in the first quarter2013, compared with earnings of $459 million a year earlier. The decrease was due to higher operating expenses of $180 million, primarily as a result of turnaround activity at the refineries in El Segundo, California and Pascagoula, Mississippi, as well as lower margins of $180 million on refined product sales. The decrease was partly offset by higher earnings of $80 million from the 50 percent-owned Chevron Phillips Chemical Company LLC (CPChem).

Refinery crude-input of 576,000 barrels per day in first quarter2013 was down 350,000 barrels per day from the corresponding 2012 period. The decline was primarily due to repairs of the crude unit at the refinery in Richmond, California, which has been offline since August 2012, and a planned crude unit turnaround at the refinery in Pascagoula.

29

Refined product sales of 1.10 million barrels per day declined 141,000 barrels per day from first quarter 2012, mainly reflecting lower gas oil, kerosene and gasoline sales. Branded gasoline sales decreased 1 percent to 500,000 barrels per day.

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
International Downstream Earnings*	$	566	$	345
___________________
*  Includes foreign currency effects	$	76	$	(11	)

International downstream operations earned $566 million in first quarter2013, compared with $345 million a year earlier. Earnings increased $320 million due to higher margins on refined product sales. These benefits were partly offset by an absence of gains on asset sales of approximately $200 million, primarily reflecting the sale of the company's fuels and finished lubricants businesses in Spain in 2012. Foreign currency effects increased earnings by $76 million in the 2013 quarter, compared with a decrease of $11 million a year earlier.

Refinery crude-input of 818,000 barrels per day in first quarter2013 increased 39,000 barrels from first quarter2012, primarily due to consolidation of the 64 percent-owned Star Petroleum Refining Company in Thailand, beginning June 2012.

Total refined product sales of 1.45 million barrels per day declined 73,000 barrels from first quarter 2012, mainly reflecting lower fuel oil and gasoline sales.

All Other

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Net Charges*	$	(439	)	$	(504	)
___________________
*  Includes foreign currency effects	$	(2	)	$	(9	)

All Other consists of mining operations, power generation businesses, worldwide cash management and debt financing activities, corporate administrative functions, insurance operations, real estate activities, energy services, alternative fuels, and technology companies.

Net charges in first quarter2013 were $439 million, compared with $504 million in the year-ago period. The change between periods was mainly due to lower corporate tax items and other corporate charges. Foreign currency effects increased net charges by $2 million, compared with an increase of $9 million last year.

Consolidated Statement of Income

Explanations of variations between periods for selected income statement categories are provided below:

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Sales and other operating revenues	$	54,296	$	58,896

Sales and other operating revenues for the quarterly period decreased $4.6 billion due to lower refined product sales and lower prices for crude oil.

30

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Income from equity affiliates	$	2,284	$	1,709

Income from equity affiliates increased between periods mainly due to higher downstream-related earnings on higher margins for GS Caltex Corporation in South Korea and Caltex Australia Limited, and a favorable swing in foreign currency effects at GS Caltex. Earnings for CPChem were higher as a result of higher chemicals margins. Upstream-related earnings from Petropiar and Petroboscan in Venezuela also benefited from a favorable swing in foreign currency effects.

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Other income	$	238	$	100

Other income for the quarterly period increased, mainly due to a favorable swing in foreign currency effects, partially offset by lower gains on asset sales.

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Purchased crude oil and products	$	32,910	$	36,053

Purchases decreased $3.1 billion in the quarterly period primarily due to lower volumes and prices for crude oil.

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Operating, selling, general and administrative expenses	$	6,760	$	6,123

Operating, selling, general and administrative expenses increased $637 million between quarters mainly due to higher employee compensation and benefits costs of $410 million, and higher professional services of $330 million, partially offset by lower transportation expense of $90 million.

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Exploration expenses	$	247	$	403

The decrease in exploration expenses between the comparative periods was primarily due to lower charges for well writeoffs, partially offset by higher geological and geophysical expenses.

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Depreciation, depletion and amortization	$	3,481	$	3,205

Depreciation, depletion and amortization in the first quarter 2013 increased mainly due to higher depreciation rates for certain oil and gas producing fields.

31

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Taxes other than on income	$	3,137	$	2,852

Taxes other than on income increased primarily due to the consolidation of the 64 percent-owned Star Petroleum Refining Company, beginning June 2012.

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Income tax expense	$	4,044	$	5,570

Effective income tax rates for the 2013 and 2012 quarters were 39 percent and 46 percent, respectively. The decrease in the effective tax rate between periods was driven by a lower effective tax rate in international upstream operations.   The lower international upstream rate was primarily due to non-recurring tax benefits in the current period and foreign currency remeasurement impacts between periods.

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Selected Operating Data

The following table presents a comparison of selected operating data:

Selected Operating Data ⁽¹⁾⁽²⁾ 

	Three Months Ended March 31
	2013		2012
U.S. Upstream
Net crude oil and natural gas liquids production (MBPD)	455		456
Net natural gas production (MMCFPD)(3)	1,255		1,170
Net oil-equivalent production (MBOEPD)	664		651
Sales of natural gas (MMCFPD)	6,095		5,611
Sales of natural gas liquids (MBPD)	15		18
Revenue from net production
Liquids ($/Bbl)	$	94.49	$	101.93
Natural gas ($/MCF)	$	3.11	$	2.48
International Upstream
Net crude oil and natural gas liquids production (MBPD)(4)	1,305		1,338
Net natural gas production (MMCFPD)(3)	4,054		3,849
Net oil-equivalent production (MBOEPD)(4)	1,981		1,980
Sales of natural gas (MMCFPD)	4,498		4,653
Sales of natural gas liquids (MBPD)	28		24
Revenue from liftings
Liquids ($/Bbl)	$	102.35	$	110.03
Natural gas ($/MCF)	$	6.07	$	5.88
U.S. and International Upstream
Total net oil-equivalent production (MBOEPD)(4)	2,645		2,631
U.S. Downstream
Gasoline sales (MBPD)(5)	579		626
Other refined product sales (MBPD)	519		613
Total refined product sales (MBPD)	1,098		1,239
Sales of natural gas liquids (MBPD)	120		132
Refinery input (MBPD)	576		926
International Downstream
Gasoline sales (MBPD)(5)	282		289
Other refined product sales (MBPD)	708		693
Share of affiliate sales (MBPD)	459		540
Total refined product sales (MBPD)	1,449		1,522
Sales of natural gas liquids (MBPD)	67		60
Refinery input (MBPD)(6)	818		779
_________________________
(1)  Includes company share of equity affiliates.
(2)  MBPD — thousands of barrels per day; MMCFPD — millions of cubic feet per day; Bbl — Barrel; MCF — thousands of cubic feet; oil-equivalent gas conversion ratio is 6,000 cubic feet of natural gas = 1 barrel of crude oil; MBOEPD — thousands of barrels of oil-equivalent per day.
(3)  Includes natural gas consumed in operations (MMCFPD):
United States (7)	68		73
International	519		539
(4)  Includes: Canada — synthetic oil	45		38
Venezuela  affiliate — synthetic oil (7)	23		25
(5)  Includes branded and unbranded gasoline.
(6)  As of June 2012, Star Petroleum Refining Company crude-input volumes are reported on a 100 percent consolidated basis. Prior to June 2012, crude-input volumes reflect a 64 percent equity interest.
(7)  2012 conforms to 2013 presentation.

33

Liquidity and Capital Resources

Cash, cash equivalents, time deposits and marketable securities totaled $19.0 billion at March 31, 2013, down $2.9 billion from year-end 2012. Cash provided by operating activities in the first three months of 2013 was $5.7 billion, compared with $8.4 billion in the year-ago period. The decline reflected working capital requirements in the current period.

Dividends The company paid dividends of $1.7 billion to common shareholders during the first three months of 2013. In April2013, the company increased its quarterly dividend by 11.1 percent to $1.00 per common share, payable in June2013.

Debt and Capital Lease Obligations Chevron’s total debt and capital lease obligations were $14.1 billion at March 31, 2013, up from $12.2 billion at December 31, 2012.

The company’s primary financing source for working capital needs is its commercial paper program. The authorized borrowing limit under this program is $12.0 billion and the outstanding balance at March 31, 2013 was $4.7 billion. The company’s debt and capital lease obligations due within one year, consisting primarily of commercial paper, redeemable long-term obligations and the current portion of long-term debt, totaled $8.1 billion at March 31, 2013 and $6.0 billion at December 31, 2012. Of these amounts, $6.0 billion was reclassified to long-term at March 31, 2013 and $5.9 billion at December 31, 2012, respectively. At March 31, 2013, settlement of these obligations was not expected to require the use of working capital within one year, as the company had the intent and the ability, as evidenced by committed credit facilities, to refinance them on a long-term basis.

At March 31, 2013, the company had $6.0 billion in committed credit facilities with various major banks, expiring in December 2016, which enable the refinancing of short-term obligations on a long-term basis. These facilities support commercial paper borrowing and can also be used for general corporate purposes. The company’s practice has been to continually replace expiring commitments with new commitments on substantially the same terms, maintaining levels management believes appropriate. Any borrowings under the facilities would be unsecured indebtedness at interest rates based on the London Interbank Offered Rate or an average of base lending rates published by specified banks and on terms reflecting the company’s strong credit rating. No borrowings were outstanding under these facilities at March 31, 2013. In addition, the company has an automatic shelf registration statement that expires in November 2015 for an unspecified amount of nonconvertible debt securities issued or guaranteed by the company.

The major debt rating agencies routinely evaluate the company’s debt, and the company’s cost of borrowing can increase or decrease depending on these debt ratings. The company has outstanding public bonds issued by Chevron Corporation, Chevron Corporation Profit Sharing/Savings Plan Trust Fund and Texaco Capital Inc. All of these securities are the obligations of, or guaranteed by, Chevron Corporation and are rated AA by Standard and Poor’s Corporation and Aa1 by Moody’s Investors Service. The company’s U.S. commercial paper is rated A-1+ by Standard and Poor’s and P-1 by Moody’s. All of these ratings denote high-quality, investment-grade securities.

The company’s future debt level is dependent primarily on results of operations, the capital program and cash that may be generated from asset dispositions. Based on its high-quality debt ratings, the company believes that it has substantial borrowing capacity to meet unanticipated cash requirements. The company also can modify capital spending plans during any extended periods of low prices for crude oil and natural gas and narrow margins for refined products and commodity chemicals to provide flexibility to continue paying the common stock dividend and maintain the company’s high-quality debt ratings.

Common Share Repurchase Program In July 2010, the Board of Directors approved an ongoing share repurchase program with no set term or monetary limits. The company expects to repurchase between $500 million and $2 billion of its common shares per quarter, at prevailing prices, as permitted by securities laws and other legal requirements and subject to market conditions and other factors. During first quarter2013, the company purchased 10.8 million common shares for $1.25 billion. From the inception of the program through first quarter2013, the company purchased 108.5 million shares for $11.3 billion.

34

Noncontrolling Interests The company had noncontrolling interests of $1.4 billion and $1.3 billion at March 31, 2013 and December 31, 2012, respectively. Distributions to noncontrolling interests totaled $10 million during the first three months of 2013.

Current Ratio — current assets divided by current liabilities, which indicates the company’s ability to repay its short-term liabilities with short-term assets. The current ratio was 1.6 at both March 31, 2013 and December 31, 2012. The current ratio is adversely affected by the fact that Chevron’s inventories are valued on a last-in, first-out basis. At March 31, 2013, the book value of inventory was lower than replacement cost.

Debt Ratio — total debt as a percentage of total debt plus Chevron Corporation Stockholders’ Equity, which indicates the company’s leverage. This ratio was 9.2 percent at March 31, 2013, and 8.2 percent at year-end 2012.

Pension Obligations Information related to pension plan contributions is included on page 15 in Note 9 to the Consolidated Financial Statements.

Capital and Exploratory Expenditures Total expenditures, including the company’s share of spending by affiliates, were $8.9 billion in the first three months of 2013, compared with $6.4 billion in the corresponding 2012 period. The amounts included the company’s share of affiliates’ expenditures of $453 million and $361 million in the 2013 and 2012 periods, respectively. Also included were amounts related to the acquisition of interests in the Kitimat LNG project in western Canada. Expenditures for upstream projects in the first three months of 2013 were $8.2 billion, representing 93 percent of the companywide total.

Capital and Exploratory Expenditures by Major Operating Area

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
United States
Upstream	$	1,843	$	1,526
Downstream	339		278
All Other	127		52
Total United States	2,309		1,856
International
Upstream	6,401		4,379
Downstream	168		182
All Other	4		—
Total International	6,573		4,561
Worldwide	$	8,882	$	6,417

Contingencies and Significant Litigation

MTBE Information related to methyl tertiary butyl ether (MTBE) matters is included on page 15 in Note 10 to the Consolidated Financial Statements under the heading “MTBE.”

Ecuador Information related to Ecuador matters is included in Note 10 to the Consolidated Financial Statements under the heading “Ecuador”, beginning on page 16.

Income Taxes Information related to income tax contingencies is included on page 14 in Note 8 and page 19 in Note 11 to the Consolidated Financial Statements under the heading “Income Taxes.”

Guarantees Information related to the company’s guarantees is included on page 19 in Note 11 to the Consolidated Financial Statements under the heading “Guarantees.”

Indemnifications Information related to indemnifications is included on page 19 in Note 11 to the Consolidated Financial Statements under the heading “Indemnifications.”

35

Off-Balance-Sheet Obligations Information related to the company’s off-balance-sheet obligations is included on page 19 in Note 11 to the Consolidated Financial Statements under the heading “Off-Balance-Sheet Obligations.”

Environmental Information related to environmental matters is included on pages 19 through 20 in Note 11 to the Consolidated Financial Statements under the heading “Environmental.”

Other Contingencies Information related to the company’s other contingencies is included on page 20 in Note 11 to the Consolidated Financial Statements under the heading “Other Contingencies.”

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Information about market risks for the three months ended March 31, 2013, does not differ materially from that discussed under Item 7A of Chevron’s 2012 Annual Report on Form 10-K.

Item 4. Controls and Procedures

(a) Evaluation of disclosure controls and procedures

The company’s management has evaluated, with the participation of the Chief Executive Officer and Chief Financial Officer, the effectiveness of the company’s disclosure controls and procedures (as defined in Rule 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934) as of the end of the period covered by this report. Based on this evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the company’s disclosure controls and procedures were effective as of March 31, 2013.

(b) Changes in internal control over financial reporting

During the quarter ended March 31, 2013, there were no changes in the company’s internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, the company’s internal control over financial reporting.

36

PART II

OTHER INFORMATION

Item 1. Legal Proceedings

Ecuador Information related to Ecuador matters is included in Note 10 to the Consolidated Financial Statements under the heading “Ecuador”, beginning on page 16.

Item 1A. Risk Factors

Chevron is a global energy company with a diversified business portfolio, a strong balance sheet, and a history of generating sufficient cash to fund capital and exploratory expenditures and to pay dividends. Nevertheless, some inherent risks could materially impact the company’s financial results of operations or financial condition.

Information about risk factors for the three months ended March 31, 2013, does not differ materially from that set forth in Part I, Item 1A, of Chevron’s 2012 Annual Report on Form 10-K.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

CHEVRON CORPORATION

ISSUER PURCHASES OF EQUITY SECURITIES

Period	Total Number Of Shares Purchased (1)(2)	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Program	Maximum Number of  Shares that May Yet Be Purchased Under the Program (2)
Jan. 1 – Jan. 31, 2013	3,734,645	$	113.16	3,710,985
Feb. 1 – Feb. 28, 2013	3,591,265	115.63		3,591,265
Mar. 1 – Mar. 31, 2013	3,477,895	119.25		3,477,895
Total	10,803,805	$	115.94	10,780,145

__________________________________

⁽¹⁾  Includes common shares repurchased from company employees for required personal income tax withholdings on the exercise of the stock options and shares delivered or attested to in satisfaction of the exercise price by holders of employee stock options. The options were issued to and exercised by management under Chevron long-term incentive plans and Unocal stock option plans.

⁽²⁾  In July 2010, the Board of Directors approved an ongoing share repurchase program with no set term or monetary limits, under which common shares would be acquired by the company (some pursuant to a Rule 10b5-1 plan) at prevailing prices, as permitted by securities laws and other legal requirements and subject to market conditions and other factors. As of March 31, 2013, 108,478,773 shares had been acquired under this program for $11.25 billion at an average price of approximately $104 per share.

Item 4. Mine Safety Disclosures

Information concerning mine safety violations or other regulatory matters required by Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act and Item 104 of Regulation S-K (17 C.F.R. §229.104) is included in Exhibit 95 of this Quarterly Report on Form 10-Q.

37

Item 6. Exhibits

Exhibit Number	Description
(3)	By-Laws of Chevron Corporation, as amended March 27, 2013, filed as Exhibit 3.1 to Chevron Corporation's Current Report on Form 8-K filed April 2, 2013, and incorporated herein by reference.
(4)	Pursuant to the Instructions to Exhibits, certain instruments defining the rights of holders of long-term debt securities of the company and its consolidated subsidiaries are not filed because the total amount of securities authorized under any such instrument does not exceed 10 percent of the total assets of the company and its subsidiaries on a consolidated basis. A copy of such instrument will be furnished to the Commission upon request.
(12.1)	Computation of Ratio of Earnings to Fixed Charges
(31.1)	Rule 13a-14(a)/15d-14(a) Certification by the company’s Chief Executive Officer
(31.2)	Rule 13a-14(a)/15d-14(a) Certification by the company’s Chief Financial Officer
(32.1)	Section 1350 Certification by the company’s Chief Executive Officer
(32.2)	Section 1350 Certification by the company’s Chief Financial Officer
(95)	Mine Safety Disclosure
(101.INS)	XBRL Instance Document
(101.SCH)	XBRL Schema Document
(101.CAL)	XBRL Calculation Linkbase Document
(101.DEF)	XBRL Definition Linkbase Document
(101.LAB)	XBRL Label Linkbase Document
(101.PRE)	XBRL Presentation Linkbase Document

Attached as Exhibit 101 to this report are documents formatted in XBRL (Extensible Business Reporting Language). The financial information contained in the XBRL-related documents is “unaudited” or “unreviewed.”

38

SIGNATURE

Pursuant to the requirements 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.

CHEVRON CORPORATION

(REGISTRANT)

/S/    MATTHEW J. FOEHR

Matthew J. Foehr, Vice President and Comptroller

(Principal Accounting Officer and

Duly Authorized Officer)

Date: May 2, 2013

39

EXHIBIT INDEX

Exhibit Number	Description
(3)	By-Laws of Chevron Corporation, as amended March 27, 2013, filed as Exhibit 3.1 to Chevron Corporation's Current Report on Form 8-K filed April 2, 2013, and incorporated herein by reference.
(4)	Pursuant to the Instructions to Exhibits, certain instruments defining the rights of holders of long-term debt securities of the company and its consolidated subsidiaries are not filed because the total amount of securities authorized under any such instrument does not exceed 10 percent of the total assets of the company and its subsidiaries on a consolidated basis. A copy of such instrument will be furnished to the Commission upon request.
(12.1)*	Computation of Ratio of Earnings to Fixed Charges
(31.1)*	Rule 13a-14(a)/15d-14(a) Certification by the company’s Chief Executive Officer
(31.2)*	Rule 13a-14(a)/15d-14(a) Certification by the company’s Chief Financial Officer
(32.1)*	Section 1350 Certification by the company’s Chief Executive Officer
(32.2)*	Section 1350 Certification by the company’s Chief Financial Officer
(95)*	Mine Safety Disclosure
(101.INS)*	XBRL Instance Document
(101.SCH)*	XBRL Schema Document
(101.CAL)*	XBRL Calculation Linkbase Document
(101.DEF)*	XBRL Definition Linkbase Document
(101.LAB)*	XBRL Label Linkbase Document
(101.PRE)*	XBRL Presentation Linkbase Document

Attached as Exhibit 101 to this report are documents formatted in XBRL (Extensible Business Reporting Language). The financial information contained in the XBRL-related documents is “unaudited” or “unreviewed.”

__________________________

* Filed herewith.

Copies of above exhibits not contained herein are available to any security holder upon written request to the Corporate Governance Department, Chevron Corporation, 6001 Bollinger Canyon Road, San Ramon, California 94583-2324.

40

EX-12.1

Exhibit 12.1

CHEVRON CORPORATION — TOTAL ENTERPRISE BASIS

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

	Three Months Ended March 31, 2013			Year Ended December 31
				2012			2011			2010			2009			2008
	(Millions of dollars)
Net Income Attributable to Chevron Corporation	$	6,178		$	26,179		$	26,895		$	19,024		$	10,483		$	23,931
Income Tax Expense	4,044			19,996			20,626			12,919			7,965			19,026
Distributions Less Than Equity in Earnings of Affiliates	(578		)	(1,351		)	(570		)	(501		)	(103		)	(440		)
Noncontrolling Interests	61			157			113			112			80			100
Previously Capitalized Interest Charged to Earnings During Period	23			123			117			240			261			91
Interest and Debt Expense	—			—			—			50			28			—
Interest Portion of Rentals (1)	87			316			288			300			299			274
Earnings Before Provision for Taxes and Fixed Charges	$	9,815		$	45,420		$	47,469		$	32,144		$	19,013		$	42,982
Interest and Debt Expense	—			—			—			50			28			—
Interest Portion of Rentals (1)	87			316			288			300			299			274
Preferred Stock Dividends of Subsidiaries	—			—			—			—			—			—
Capitalized Interest	56			230			288			267			273			256
Total Fixed Charges	$	143		$	546		$	576		$	617		$	600		$	530
Ratio of Earnings to Fixed Charges	68.64			83.19			82.41			52.10			31.69			81.10

⁽¹⁾  Calculated as one-third of rentals. Considered a reasonable approximation of interest factor.

41

EX-31.1

Exhibit 31.1

RULE 13a-14(a)/15d-14(a) CERTIFICATION PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, John S. Watson, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Chevron 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 officer 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 officer 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.

/S/    JOHN S. WATSON

John S. Watson

Chairman of the Board and

Chief Executive Officer

Dated: May 2, 2013

42

EX-31.2

Exhibit 31.2

RULE 13a-14(a)/15d-14(a) CERTIFICATION PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Patricia E. Yarrington, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Chevron 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 officer 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 officer 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.

/S/    PATRICIA E. YARRINGTON

Patricia E. Yarrington

Vice President and

Chief Financial Officer

Dated: May 2, 2013

43

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO SECTION 906

OF THE SARBANES-OXLEY ACT OF 2002 (18 U.S.C. SECTION 1350)

In connection with the Quarterly Report of Chevron Corporation (the “Company”) on Form 10-Q for the period ended March 31, 2013, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, John S. Watson, Chairman and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/S/    JOHN S. WATSON

John S. Watson

Chairman of the Board and

Chief Executive Officer

Dated: May 2, 2013

44

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO SECTION 906

OF THE SARBANES-OXLEY ACT OF 2002 (18 U.S.C. SECTION 1350)

In connection with the Quarterly Report of Chevron Corporation (the “Company”) on Form 10-Q for the period ended March 31, 2013, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Patricia E. Yarrington, Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/S/    PATRICIA E. YARRINGTON

Patricia E. Yarrington

Vice President and

Chief Financial Officer

Dated: May 2, 2013

45

EX-95

Exhibit 95

Mine Safety Disclosure

Chevron is or has been an operator of the following coal and molybdenum mines for which reporting requirements apply under Section 1503 of the Dodd-Frank Wall Street Reform and Consumer Protection Act, as a result of citations and orders received from the Mine Safety and Health Administration (MSHA) during the quarter ending March 31, 2013. In evaluating this information, consideration should be given to factors such as: (i) the number of citations and orders will vary depending on the size of the mine, (ii) the number of citations issued will vary from inspector to inspector and mine to mine, and (iii) citations and orders can be contested and appealed, and in that process, are often reduced in severity and amount, and are sometimes dismissed.

The items in the table below refer to the applicable sections of the Federal Mine Safety and Health Administration Act of 1977 under which reporting is required for the quarter ending March 31, 2013.

Mine	Section104S&SCitations(#)	Section104(b)Orders(#)	Section104(d)CitationsAndOrders(#)	Section110(b)(2)Violations(#)	Section107(a)Orders(#)	Total DollarValue ofMSHAAssess-mentsProposed($1,000)	Total Number ofMining Related Fatalities(#)	Received Notice of Pattern of Violation Under Section 104(e)(yes/no)	Received Notice of Potential to Have Pattern of Violation Under Section 104(e)(yes/no)	LegalActionsPending as of Last Day of Period(#)	Legal Actions Initiated During Period(#)	Legal Actions Resolved During Period(#)
McKinley Mine	—	—	—	—	—	—	—	no	no	—	—	—
North River Mine (1)	—	—	—	—	—	—	—	no	no	—	—	2
Questa Mine	—	—	—	—	—	$1	—	no	no	1	1	—

⁽¹⁾  The North River Mine was sold May 6, 2011.

XML

Operating Segments and Geographic Data (Details Textual)	3 Months Ended
	Mar. 31, 2013 segment
Segment Reporting [Abstract]
Number of reportable segments	2
Number of operating segments	2

XML

Derivative Instruments and Hedging Activities (Details 2) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013
Offsetting Assets [Abstract]
Derivative Assets, Gross Amount Recognized	$ 999
Derivative Assets, Gross Amounts Offset in Statement of Financial Position	935
Derivative Assets, Net Amounts Presented in the Statement of Financial Position	64
Derivative Assets, Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments	57
Derivative Assets, Net Amount	7
Offsetting Liabilities [Abstract]
Derivative Liabilities, Gross Amount Recognized	1,045
Derivative Liabilities, Gross Amounts Offset in Statement of Financial Position	935
Derivative Liabilities	110
Derivative Liabilities, Gross Amount Not Offset in the Statement of Financial Position - Financial Instruments	12
Derivative Liabilities, Net Amount	$ 98

XML

Other Contingencies and Commitments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2009
Commitments and Contingencies Disclosure [Abstract]
Indemnifications acquirer environmental liabilities max obligation		$ 200
Indemnification expiration	2022-04

XML

Long-Term Debt (Details) (USD $) In Billions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Level 1 [Member] | Corporate Bonds [Member]
Debt Instrument [Line Items]
Fair value of debt	$ 5.8
Level 2 [Member] | Other Bonds [Member]
Debt Instrument [Line Items]
Fair value of debt	0.8
Carrying Value of Long-term Debt [Member]
Debt Instrument [Line Items]
Long-term debt	6.0	6.1
Fair Value of Long-term Debt [Member]
Debt Instrument [Line Items]
Long-term debt	$ 6.6	$ 6.8

XML

Employee Benefits (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Maximum annual increase percentage to company contribution for retiree medical coverage	4.00%
Contribution to employee pension plan	$ 238
Contribution to other post retirement plans	51
Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan estimated future employer contributions in next fiscal year	1,000
Contribution to other post retirement plans	177
U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution to employee pension plan	196
U.S. [Member] | Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan estimated future employer contributions in next fiscal year	650
International [Member] | Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan estimated future employer contributions in next fiscal year	$ 350

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Noncontrolling Interests (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Activity for equity attributable to noncontrolling interests
Balance at January 1	$ 137,832		$ 122,181
Net income	6,239		6,499
Dividends	(1,736)		(1,590)
Distributions to noncontrolling interests	(10)		(8)
Treasury shares, net	(1,041)		(1,016)
Other changes, net	202	[1]	260	[1]
Balance at March 31	141,486		126,326
Chevron Corporation Stockholders' Equity [Member]
Activity for equity attributable to noncontrolling interests
Balance at January 1	136,524		121,382
Net income	6,178		6,471
Dividends	(1,736)		(1,590)
Treasury shares, net	(1,041)		(1,016)
Other changes, net	209	[1]	260	[1]
Balance at March 31	140,134		125,507
Noncontrolling Interest [Member]
Activity for equity attributable to noncontrolling interests
Balance at January 1	1,308		799
Net income	61		28
Distributions to noncontrolling interests	(10)		(8)
Other changes, net	(7)	[1]	0	[1]
Balance at March 31	$ 1,352		$ 819

[1] Includes components of comprehensive income, which are disclosed separately in the Consolidated Statement of Comprehensive Income.

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Information Relating to the Consolidated Statement of Cash Flows (Tables)

3 Months Ended

Mar. 31, 2013

Supplemental Cash Flow Elements [Abstract]

Net (increase) decrease in operating working capital

The “Net increase in operating working capital” was composed of the following operating changes:

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Increase in accounts and notes receivable	$	(994	)	$	(153	)
Increase in inventories	(520		)	(1,847		)
Increase in prepaid expenses and other current assets	(437		)	(119		)
Decrease in accounts payable and accrued liabilities	(1,759		)	(1,027		)
Increase in income and other taxes payable	350			351
Net increase in operating working capital	$	(3,360	)	$	(2,795	)

Cash payment for interest on debt and for income taxes

“Net Cash Provided by Operating Activities” included the following cash payments for interest on debt and for income taxes:

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Interest on debt (net of capitalized interest)	$	—	$	36
Income taxes	3,434		4,140

Net sales (purchases) of time deposits

The “Net (purchases) sales of time deposits” consisted of the following gross amounts:

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Time deposits purchased	$	(708	)	$	(8	)
Time deposits matured	8			3,308
Net (purchases) sales of time deposits	$	(700	)	$	3,300

Net sales (purchases) of marketable securities

The “Net sales of marketable securities” consisted of the following gross amounts:

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Marketable securities purchased	$	—	$	—
Marketable securities sold	—		11
Net sales of marketable securities	$	—	$	11

Capital expenditures

The major components of “Capital expenditures” and the reconciliation of this amount to the capital and exploratory expenditures, including equity affiliates, are as follows:

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Additions to properties, plant and equipment	$	7,935		$	5,511
Additions to investments	262			192
Current year dry hole expenditures	12			205
Payments for other liabilities and assets, net	(17		)	(13		)
Capital expenditures	8,192			5,895
Expensed exploration expenditures	235			161
Assets acquired through capital lease obligations	2			—
Capital and exploratory expenditures, excluding equity affiliates	8,429			6,056
Company’s share of expenditures by equity affiliates	453			361
Capital and exploratory expenditures, including equity affiliates	$	8,882		$	6,417

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Fair Value Measurements (Details 1) (Fair Value, Measurements, Nonrecurring [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Properties, plant and equipment, net (held and used)	$ 0
Properties, plant and equipment, net (held for sale)	104
Investments and advances	0
Total Assets at Fair Value	104
Properties, plant and equipment, net (held and used) Before-Tax Loss	4
Properties, plant and equipment, net (held for sale) Before-Tax Loss	78
Investments and advances Before Tax Loss	0
Total Assets at Fair Value Before-Tax Loss	82
Level 1 [Member]
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Properties, plant and equipment, net (held and used)	0
Properties, plant and equipment, net (held for sale)	0
Investments and advances	0
Total Assets at Fair Value	0
Level 2 [Member]
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Properties, plant and equipment, net (held and used)	0
Properties, plant and equipment, net (held for sale)	0
Investments and advances	0
Total Assets at Fair Value	0
Level 3 [Member]
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Properties, plant and equipment, net (held and used)	0
Properties, plant and equipment, net (held for sale)	104
Investments and advances	0
Total Assets at Fair Value	$ 104

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Summarized Financial Data - Chevron Transport Corporation (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Summarized Financial Data - Chevron Transport Corporation
Sales and other operating revenues	$ 54,296	[1]	$ 58,896	[1]
Costs and other deductions	46,535		48,636
Net loss attributable to CTC	6,178		6,471
Chevron Transport Corporation [Member]
Summarized Financial Data - Chevron Transport Corporation
Sales and other operating revenues	131		145
Costs and other deductions	172		183
Net loss attributable to CTC	$ (41)		$ (38)

[1] * Includes excise, value-added and similar taxes:2,033 1,787

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Operating Segments and Geographic Data (Details 1) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Segment Assets
Segment Assets	$ 237,410	$ 232,982
Goodwill	4,640	4,640
United States [Member]
Segment Assets
Segment Assets	72,577	72,641
International [Member]
Segment Assets
Segment Assets	160,193	155,701
Upstream [Member]
Segment Assets
Segment Assets	168,043	162,337
Goodwill	4,640	4,640
Upstream [Member] | United States [Member]
Segment Assets
Segment Assets	42,477	41,891
Upstream [Member] | International [Member]
Segment Assets
Segment Assets	120,926	115,806
Downstream [Member]
Segment Assets
Segment Assets	44,940	43,047
Downstream [Member] | United States [Member]
Segment Assets
Segment Assets	23,982	23,023
Downstream [Member] | International [Member]
Segment Assets
Segment Assets	20,958	20,024
Reportable Segment [Member]
Segment Assets
Segment Assets	212,983	205,384
All Other Segments [Member]
Segment Assets
Segment Assets	24,427	27,598
All Other Segments [Member] | United States [Member]
Segment Assets
Segment Assets	6,118	7,727
All Other Segments [Member] | International [Member]
Segment Assets
Segment Assets	$ 18,309	$ 19,871

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Derivative Instruments and Hedging Activities (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Consolidated Balance Sheet: Fair Value of Derivatives not Designated as Hedging Instruments
Total Assets at Fair Value	$ 64	$ 86
Total Liabilities at Fair Value	110	149
Accounts and notes receivable, net [Member] | Commodity [Member]
Consolidated Balance Sheet: Fair Value of Derivatives not Designated as Hedging Instruments
Total Assets at Fair Value	41	57
Long term receivables, net [Member] | Commodity [Member]
Consolidated Balance Sheet: Fair Value of Derivatives not Designated as Hedging Instruments
Total Assets at Fair Value	23	29
Accounts payable [Member] | Commodity [Member]
Consolidated Balance Sheet: Fair Value of Derivatives not Designated as Hedging Instruments
Total Liabilities at Fair Value	77	112
Deferred credits and other noncurrent obligations [Member] | Commodity [Member]
Consolidated Balance Sheet: Fair Value of Derivatives not Designated as Hedging Instruments
Total Liabilities at Fair Value	$ 33	$ 37

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Litigation (Details) (Pending Litigation [Member], USD $)	0 Months Ended	1 Months Ended		3 Months Ended
	Aug. 03, 2012	Sep. 30, 2010	Aug. 31, 2010	Mar. 31, 2013 LegalMatter	Nov. 06, 2012	Jan. 03, 2012	Feb. 14, 2011	Dec. 31, 2008
MTBE [Member]
Loss Contingencies [Line Items]
Pending lawsuits and claims (in number of claims)				6
Ecuador [Member]
Loss Contingencies [Line Items]
Pending lawsuits and claims (in number of claims)				9
Conducted remediation program (in years)				3 years
Remediation program				$ 40,000,000
Financial compensation for purported damages on mining engineer's report								18,900,000,000
Assessment for purported unjust enrichment on mining engineer's report								8,400,000,000
Court order requiring the parties to provide their positions on damages within (in days)			45 days
Approximate damages on plaintiffs' submission, Minimum		16,000,000,000
Approximate damages on plaintiffs' submission, Maximum		76,000,000,000
Approximate unjust enrichment on plaintiffs' submission, Minimum		5,000,000,000
Approximate unjust enrichment on plaintiffs' submission, Maximum		38,000,000,000
Amount assessed in damages							8,600,000,000
Amount assessed for plaintiffs representatives							900,000,000
Additional amount assessed in punitive damages							8,600,000,000
Public apology date within judgment/clarification ruling (in days)							15 days
Proposed additional payment for plaintiff attorney fees as percentage of judgment						0.10%
Approved court-appointed liquadator's report damanges for total judgment	$ 19,100,000,000
Percentage of payments wIthheld by third parties due to freeze order					40.00%
Percentage of funds wIthheld by banks due to freeze order					40.00%
Ecuador [Member] | Declatory Relief Claim [Member]
Loss Contingencies [Line Items]
Pending lawsuits and claims (in number of claims)				1
Ecuador [Member] | Discovery Stay On Claims [Member]
Loss Contingencies [Line Items]
Pending lawsuits and claims (in number of claims)				8

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Noncontrolling Interests

3 Months Ended

Mar. 31, 2013

Noncontrolling Interest [Abstract]

Noncontrolling Interests

Noncontrolling Interests

Ownership interests in the company’s subsidiaries held by parties other than the parent are presented separately from the parent’s equity on the Consolidated Balance Sheet. The amount of consolidated net income attributable to the parent and the noncontrolling interests are both presented on the face of the Consolidated Statement of Income.

Activity for the equity attributable to noncontrolling interests for the first three months of 2013 and 2012 is as follows:

	2013									2012
	Chevron Corporation Stockholders’ Equity			Noncontrolling Interest			Total Equity			Chevron Corporation Stockholders’ Equity			Noncontrolling Interest			Total Equity
	(Millions of dollars)
Balance at January 1	$	136,524		$	1,308		$	137,832		$	121,382		$	799		$	122,181
Net income	6,178			61			6,239			6,471			28			6,499
Dividends	(1,736		)	—			(1,736		)	(1,590		)	—			(1,590		)
Distributions to noncontrolling interests	—			(10		)	(10		)	—			(8		)	(8		)
Treasury shares, net	(1,041		)	—			(1,041		)	(1,016		)	—			(1,016		)
Other changes, net*	209			(7		)	202			260			—			260
Balance at March 31	$	140,134		$	1,352		$	141,486		$	125,507		$	819		$	126,326

 _________________________________

* Includes components of comprehensive income, which are disclosed separately in the Consolidated Statement of Comprehensive Income.

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Summarized Financial Data - Chevron Transport Corporation (Details 1) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Balance Sheet - Chevron Transport Corporation
Current assets	$ 54,696	$ 55,720
Current liabilities	34,685	34,212
Total Equity	141,486	137,832	126,326	122,181
Chevron Transport Corporation [Member]
Balance Sheet - Chevron Transport Corporation
Current assets	212	199
Other assets	312	313
Current liabilities	210	154
Other liabilities	414	415
Total Equity	$ (100)	$ (57)

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Employee Benefits (Tables)

3 Months Ended

Mar. 31, 2013

Compensation and Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Cost

The components of net periodic benefit costs for 2013 and 2012 are as follows:

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Pension Benefits
United States
Service cost	$	124		$	113
Interest cost	118			109
Expected return on plan assets	(175		)	(159		)
Amortization of prior service credits	—			(2		)
Amortization of actuarial losses	121			118
Settlement losses	57			74
Total United States	245			253
International
Service cost	48			44
Interest cost	77			79
Expected return on plan assets	(68		)	(66		)
Amortization of prior service costs	5			5
Amortization of actuarial losses	36			33
Total International	98			95
Net Periodic Pension Benefit Costs	$	343		$	348
Other Benefits*
Service cost	$	18		$	15
Interest cost	40			39
Amortization of prior service credits	(12		)	(18		)
Amortization of actuarial losses	13			15
Settlement gains	—			(26		)
Net Periodic Other Benefit Costs	$	59		$	25

_________________________________

* Includes costs for U.S. and international OPEB plans. Obligations for plans outside the United States are not significant relative to the company’s total OPEB obligation.

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Summarized Financial Data - Chevron Transport Corporation (Tables)

3 Months Ended

Mar. 31, 2013

Summarized Financial Data of Subsidiary Two [Abstract]

Summarized Financial Data - Chevron Transport Corporation

Summarized income statement information for CTC and its consolidated subsidiaries is as follows:

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Sales and other operating revenues	$	131		$	145
Costs and other deductions	172			183
Net loss attributable to CTC	(41		)	(38		)

Summarized Financial Data and its Subsidiary

	At March 31 2013			At December 31 2012
	(Millions of dollars)
Current assets	$	212		$	199
Other assets	312			313
Current liabilities	210			154
Other liabilities	414			415
Total CTC net (deficit) equity	$	(100	)	$	(57	)

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Accounting for Suspended Exploratory Wells (Details) (USD $)	Mar. 31, 2013
Accounting for Suspended Exploratory Wells [Abstract]
Capitalized cost of exploratory wells	$ 2,900,000,000
Change in capitalized cost of suspended wells from the prior year end	$ 220,000,000

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Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income Tax Disclosure [Abstract]
Income tax expense	$ 4,044	$ 5,570
Effective tax rates	39.00%	46.00%

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The fair value hierarchy for assets and liabilities measured at fair value on a recurring basis at March 31, 2013 and December 31, 2012 is as follows:

Assets and Liabilities Measured at Fair Value on a Recurring Basis

(Millions of dollars)

	At March 31, 2013								At December 31, 2012
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Marketable Securities	$	266	$	266	$	—	$	—	$	266	$	266	$	—	$	—
Derivatives	64		2		62		—		86		21		65		—
Total Assets at Fair Value	$	330	$	268	$	62	$	—	$	352	$	287	$	65	$	—
Derivatives	110		106		4		—		149		148		1		—
Total Liabilities at Fair Value	$	110	$	106	$	4	$	—	$	149	$	148	$	1	$	—

Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis

The fair value hierarchy for assets and liabilities measured at fair value on a nonrecurring basis at March 31, 2013 is as follows:

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

(Millions of dollars)

	At March 31, 2013
	Total		Level 1		Level 2		Level 3		Before-Tax Loss
Properties, plant and equipment, net (held and used)	$	—	$	—	$	—	$	—	$	4
Properties, plant and equipment, net (held for sale)	104		—		—		104		78
Investments and advances	—		—		—		—		—
Total Assets at Fair Value	$	104	$	—	$	—	$	104	$	82

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Derivative Instruments and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Consolidated Balance Sheet: Fair Value of Derivatives Not Designated as Hedging Instruments

Derivative instruments measured at fair value at March 31, 2013, and December 31, 2012, and their classification on the Consolidated Balance Sheet and Consolidated Statement of Income are as follows:

Consolidated Balance Sheet: Fair Value of Derivatives Not Designated as Hedging Instruments

(Millions of Dollars)

Type of Contract	Balance Sheet Classification	At March 31 2013		At December 31 2012
Commodity	Accounts and notes receivable, net	$	41	$	57
Commodity	Long-term receivables, net	23		29
Total Assets at Fair Value		$	64	$	86
Commodity	Accounts payable	$	77	$	112
Commodity	Deferred credits and other noncurrent obligations	33		37
Total Liabilities at Fair Value		$	110	$	149

Consolidated Statement of Income: The Effect of Derivatives Not Designated as Hedging Instruments

Consolidated Statement of Income: The Effect of Derivatives Not Designated as Hedging Instruments

(Millions of dollars)

		Gain / (Loss) Three Months Ended March 31
Type of Contract	Statement of Income Classification	2013			2012
Commodity	Sales and other operating revenues	$	(75	)	$	(118	)
Commodity	Purchased crude oil and products	(4		)	(19		)
Commodity	Other income	(1		)	5
		$	(80	)	$	(132	)

Consolidated Balance Sheet: The Effect of Netting Derivative Assets and Liabilities

The table below represents gross and net derivative assets and liabilities subject to netting agreements on the Statement of Financial Position at March 31, 2013.

Consolidated Balance Sheet: The Effect of Netting Derivative Assets and Liabilities

(Millions of dollars)

	At March 31, 2013
	Gross Amount Recognized		Gross Amounts Offset in Statement of Financial Position		Net Amounts Presented in the Statement of Financial Position		Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments		Net Amount
Derivative Assets	$	999	$	935	$	64	$	57	$	7
Derivative Liabilities	$	1,045	$	935	$	110	$	12	$	98

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Changes in Accumulated Other Comprehensive Losses

3 Months Ended

Mar. 31, 2013

Equity [Abstract]

Changes in Accumulated Other Comprehensive Losses

Changes in Accumulated Other Comprehensive Losses

The change in Accumulated Other Comprehensive Losses (AOCL) presented on the Consolidated Balance Sheet and the impact of significant amounts reclassified from AOCL on information presented in the Consolidated Statement of Income for the three months ending March 31, 2013, are reflected in the table below.

Changes in Accumulated Other Comprehensive Income (Loss) by Component ⁽¹⁾ 

(Millions of Dollars)

	Three Months Ended March 31, 2013
	Currency Translation Adjustment			Unrealized Holding Gains (Losses) on Securities			Derivatives			Defined Benefit Plans			Total
Balance at January 1	$	(65	)	$	1		$	125		$	(6,430	)	$	(6,369	)
Components of Other Comprehensive Income (Loss):
Before Reclassifications	(11		)	(1		)	—			(25		)	(37		)
Reclassifications (2)	—			—			(3		)	140			137
Net Other Comprehensive Income (Loss)	(11		)	(1		)	(3		)	115			100
Balance at March 31	$	(76	)	$	—		$	122		$	(6,315	)	$	(6,269	)

⁽¹⁾ All amounts are net of tax.

⁽²⁾ Refer to Note 9, Employee Benefits for reclassified components totaling $220 million that are included in employee benefit costs for the three months ending March 31, 2013. Related income taxes for the same period, totaling $80 million, are reflected in Income Tax Expense on the Consolidated Statement of Income. All other reclassified amounts were insignificant.

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Changes in Accumulated Other Comprehensive Losses (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at January 1	$ (6,369)	[1]
Components of Other Comprehensive Income (Loss):
Before Reclassifications	(37)	[1]
Reclassifications	137	[1],[2]
Other Comprehensive Gain, Net of Tax	100	[1]	147
Balance at March 31	(6,269)	[1]
Income tax expense	4,044		5,570
Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at January 1	(65)	[1]
Components of Other Comprehensive Income (Loss):
Before Reclassifications	(11)	[1]
Reclassifications	0	[1],[2]
Other Comprehensive Gain, Net of Tax	(11)	[1]
Balance at March 31	(76)	[1]
Unrealized Holding Gains (Losses) on Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at January 1	1	[1]
Components of Other Comprehensive Income (Loss):
Before Reclassifications	(1)	[1]
Reclassifications	0	[1],[2]
Other Comprehensive Gain, Net of Tax	(1)	[1]
Balance at March 31	0	[1]
Derivatives [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at January 1	125	[1]
Components of Other Comprehensive Income (Loss):
Before Reclassifications	0	[1]
Reclassifications	(3)	[1],[2]
Other Comprehensive Gain, Net of Tax	(3)	[1]
Balance at March 31	122	[1]
Defined Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at January 1	(6,430)	[1]
Components of Other Comprehensive Income (Loss):
Before Reclassifications	(25)	[1]
Reclassifications	140	[1],[2]
Other Comprehensive Gain, Net of Tax	115	[1]
Balance at March 31	(6,315)	[1]
Defined Benefit Plans [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Components of Other Comprehensive Income (Loss):
Employee benefits reclassification component, included in employee benefit costs	220
Income tax expense	$ 80

[1] All amounts are net of tax.

[2] Refer to Note 9, Employee Benefits for reclassified components totaling $220 million that are included in employee benefit costs for the three months ending March 31, 2013. Related income taxes for the same period, totaling $80 million, are reflected in Income Tax Expense on the Consolidated Statement of Income. All other reclassified amounts were insignificant.

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Summarized Financial Data - Chevron U.S.A. Inc. (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Statement of Income - Chevron U.S.A. Inc.
Sales and other operating revenues	$ 54,296	[1]	$ 58,896	[1]
Costs and other deductions	46,535		48,636
Net income	6,178		6,471
Chevron U.S.A. Inc. [Member]
Statement of Income - Chevron U.S.A. Inc.
Sales and other operating revenues	42,777		47,134
Costs and other deductions	41,717		45,106
Net income	$ 889		$ 1,364

[1] * Includes excise, value-added and similar taxes:2,033 1,787

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Derivative Instruments and Hedging Activities (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (80)	$ (132)
Sales and other operating revenues [Member] | Commodity [Member]
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(75)	(118)
Purchased crude oil and products [Member] | Commodity [Member]
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(4)	(19)
Other income [Member] | Commodity [Member]
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (1)	$ 5

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Consolidated Statement of Income (Unaudited) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Revenues and Other Income
Sales and other operating revenues	$ 54,296	[1]	$ 58,896	[1]
Income from equity affiliates	2,284		1,709
Other income	238		100
Total Revenues and Other Income	56,818		60,705
Costs and Other Deductions
Purchased crude oil and products	32,910		36,053
Operating expenses	5,762		5,183
Selling, general and administrative expenses	998		940
Exploration expenses	247		403
Depreciation, depletion and amortization	3,481		3,205
Taxes other than on income	3,137	[1]	2,852	[1]
Total Costs and Other Deductions	46,535		48,636
Income Before Income Tax Expense	10,283		12,069
Income Tax Expense	4,044		5,570
Net Income	6,239		6,499
Less: Net income attributable to noncontrolling interests	61		28
Net Income Attributable to Chevron Corporation	6,178		6,471
Per Share of Common Stock:
Net Income Attributable to Chevron Corporation - Basic (in dollars per share)	$ 3.20		$ 3.30
Net Income Attributable to Chevron Corporation - Diluted (in dollars per share)	$ 3.18		$ 3.27
Dividends (in dollars per share)	$ 0.9		$ 0.81
Weighted Average Number of Shares Outstanding (000s)
Basic (in shares)	1,929,014		1,963,862
Diluted (in shares)	1,943,931		1,978,781
Includes excise, value-added and similar taxes:	$ 2,033		$ 1,787

[1] * Includes excise, value-added and similar taxes:2,033 1,787

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Employee Benefits (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Net Periodic Benefit Cost
Net Periodic Benefit Costs	$ 343		$ 348
U.S. [Member]
Net Periodic Benefit Cost
Service cost	124		113
Interest cost	118		109
Expected return on plan assets	(175)		(159)
Amortization of prior service costs (credits)	0		(2)
Amortization of actuarial losses	121		118
Settlement losses (gains)	57		74
Net Periodic Benefit Costs	245		253
International [Member]
Net Periodic Benefit Cost
Service cost	48		44
Interest cost	77		79
Expected return on plan assets	(68)		(66)
Amortization of prior service costs (credits)	5		5
Amortization of actuarial losses	36		33
Net Periodic Benefit Costs	98		95
Other Benefits [Member]
Net Periodic Benefit Cost
Service cost	18	[1]	15	[1]
Interest cost	40	[1]	39	[1]
Amortization of prior service costs (credits)	(12)	[1]	(18)	[1]
Amortization of actuarial losses	13	[1]	15	[1]
Settlement losses (gains)	0	[1]	(26)	[1]
Net Periodic Benefit Costs	$ 59		$ 25

[1] Includes costs for U.S. and international OPEB plans. Obligations for plans outside the United States are not significant relative to the company’s total OPEB obligation.

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Consolidated Statement of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Activities
Net Income	$ 6,239	$ 6,499
Adjustments
Depreciation, depletion and amortization	3,481	3,205
Dry hole expense	12	242
Distributions less than income from equity affiliates	(578)	(178)
Net before-tax gains on asset retirements and sales	(27)	(122)
Net foreign currency effects	(109)	142
Deferred income tax provision	127	491
Net increase in operating working capital	(3,360)	(2,795)
Increase in long-term receivables	(66)	(15)
(Increase) decrease in other deferred charges	(111)	83
Cash contributions to employee pension plans	(238)	(345)
Other	344	1,180
Net Cash Provided by Operating Activities	5,714	8,387
Investing Activities
Capital expenditures	(8,192)	(5,895)
Proceeds and deposits related to asset sales	76	428
Net (purchases) sales of time deposits	(700)	3,300
Net sales of marketable securities	0	11
Repayment of loans by equity affiliates	1	0
Net sales of other short-term investments	356	183
Net Cash Used for Investing Activities	(8,459)	(1,973)
Financing Activities
Net borrowings of short-term obligations	2,069	(852)
Repayments of long-term debt and other financing obligations	(102)	(15)
Cash dividends — common stock	(1,735)	(1,590)
Distributions to noncontrolling interests	(10)	(8)
Net purchases of treasury shares	(1,027)	(996)
Net Cash Used for Financing Activities	(805)	(3,461)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(15)	54
Net Change in Cash and Cash Equivalents	(3,565)	3,007
Cash and Cash Equivalents at January 1	20,939	15,864
Cash and Cash Equivalents at March 31	$ 17,374	$ 18,871

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Information Relating to the Consolidated Statement of Cash Flows (Details Textual) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Supplemental Cash Flow Elements [Abstract]
Reduction for income tax benefits associated with stock options exercised	$ 28,000,000	$ 26,000,000
Net purchases of treasury shares	1,300,000,000	1,300,000,000
Stock repurchased during period (in shares)	10.8	11.6
Stock repurchased during period	$ 1,250,000,000	$ 1,250,000,000

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Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2013

Accounting Policies [Abstract]

Segment Reporting

Although each subsidiary of Chevron is responsible for its own affairs, Chevron Corporation manages its investments in these subsidiaries and their affiliates. The investments are grouped into two business segments, Upstream and Downstream, representing the company’s “reportable segments” and “operating segments” as defined in accounting standards for segment reporting (ASC 280). Upstream operations consist primarily of exploring for, developing and producing crude oil and natural gas; liquefaction, transportation and regasification associated with liquefied natural gas (LNG); transporting crude oil by major international oil export pipelines; processing, transporting, storage and marketing of natural gas; and a gas-to-liquids project. Downstream operations consist primarily of refining of crude oil into petroleum products; marketing of crude oil and refined products; transporting of crude oil and refined products by pipeline, marine vessel, motor equipment and rail car; and manufacturing and marketing of commodity petrochemicals, plastics for industrial uses, and fuel and lubricant additives. All Other activities of the company include mining operations, power generation businesses, worldwide cash management and debt financing activities, corporate administrative functions, insurance operations, real estate activities, energy services, alternative fuels, and technology companies.

The segments are separately managed for investment purposes under a structure that includes “segment managers” who report to the company’s “chief operating decision maker” (CODM) (terms as defined in ASC 280). The CODM is the company’s Executive Committee (EXCOM), a committee of senior officers that includes the Chief Executive Officer, and EXCOM reports to the Board of Directors of Chevron Corporation.

The operating segments represent components of the company, as described in accounting standards for segment reporting (ASC 280), that engage in activities (a) from which revenues are earned and expenses are incurred; (b) whose operating results are regularly reviewed by the CODM, which makes decisions about resources to be allocated to the segments and assesses their performance; and (c) for which discrete financial information is available.

Segment managers for the reportable segments are directly accountable to, and maintain regular contact with, the company’s CODM to discuss the segment’s operating activities and financial performance. The CODM approves annual capital and exploratory budgets at the reportable segment level, as well as reviews capital and exploratory funding for major projects and approves major changes to the annual capital and exploratory budgets. However, business-unit managers within the operating segments are directly responsible for decisions relating to project implementation and all other matters connected with daily operations. Company officers who are members of the EXCOM also have individual management responsibilities and participate in other committees for purposes other than acting as the CODM.

The company’s primary country of operation is the United States of America, its country of domicile. Other components of the company’s operations are reported as “International” (outside the United States).

Fair Value of Financial Instruments

Accounting standards for fair value measurement (ASC 820) establish a framework for measuring fair value and stipulate disclosures about fair value measurements. The standards apply to recurring and nonrecurring fair value measurements of financial and nonfinancial assets and liabilities. Among the required disclosures is the fair value hierarchy of inputs the company uses to value an asset or a liability. The three levels of the fair value hierarchy are described as follows:

Level 1: Quoted prices (unadjusted) in active markets for identical assets and liabilities. For the company, Level 1 inputs include exchange-traded futures contracts for which the parties are willing to transact at the exchange-quoted price and marketable securities that are actively traded.

Level 2: Inputs other than Level 1 that are observable, either directly or indirectly. For the company, Level 2 inputs include quoted prices for similar assets or liabilities, prices obtained through third-party broker quotes and prices that can be corroborated with other observable inputs for substantially the complete term of a contract.

Level 3: Unobservable inputs. The company does not use Level 3 inputs for any of its recurring fair value measurements. Level 3 inputs may be required for the determination of fair value associated with certain nonrecurring measurements of nonfinancial assets and liabilities.

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Operating Segments and Geographic Data (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]
Segment Earnings	$ 6,178	$ 6,471
Upstream [Member]
Segment Reporting Information [Line Items]
Segment Earnings	5,916	6,171
Downstream [Member]
Segment Reporting Information [Line Items]
Segment Earnings	701	804
Reportable Segment [Member]
Segment Reporting Information [Line Items]
Segment Earnings	6,617	6,975
All Other Segments [Member]
Segment Reporting Information [Line Items]
Interest Income	21	20
Other	(460)	(524)
United States [Member] | Upstream [Member]
Segment Reporting Information [Line Items]
Segment Earnings	1,132	1,529
United States [Member] | Downstream [Member]
Segment Reporting Information [Line Items]
Segment Earnings	135	459
International [Member] | Upstream [Member]
Segment Reporting Information [Line Items]
Segment Earnings	4,784	4,642
International [Member] | Downstream [Member]
Segment Reporting Information [Line Items]
Segment Earnings	$ 566	$ 345

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Noncontrolling Interests (Tables)

3 Months Ended

Mar. 31, 2013

Noncontrolling Interest [Abstract]

Activity for equity attributable to noncontrolling interests

Activity for the equity attributable to noncontrolling interests for the first three months of 2013 and 2012 is as follows:

	2013									2012
	Chevron Corporation Stockholders’ Equity			Noncontrolling Interest			Total Equity			Chevron Corporation Stockholders’ Equity			Noncontrolling Interest			Total Equity
	(Millions of dollars)
Balance at January 1	$	136,524		$	1,308		$	137,832		$	121,382		$	799		$	122,181
Net income	6,178			61			6,239			6,471			28			6,499
Dividends	(1,736		)	—			(1,736		)	(1,590		)	—			(1,590		)
Distributions to noncontrolling interests	—			(10		)	(10		)	—			(8		)	(8		)
Treasury shares, net	(1,041		)	—			(1,041		)	(1,016		)	—			(1,016		)
Other changes, net*	209			(7		)	202			260			—			260
Balance at March 31	$	140,134		$	1,352		$	141,486		$	125,507		$	819		$	126,326

 _________________________________

* Includes components of comprehensive income, which are disclosed separately in the Consolidated Statement of Comprehensive Income.

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Interim Financial Statements

3 Months Ended

Mar. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Interim Financial Statements

Interim Financial Statements

The accompanying consolidated financial statements of Chevron Corporation and its subsidiaries (the company) have not been audited by an independent registered public accounting firm. In the opinion of the company’s management, the interim data includes all adjustments necessary for a fair statement of the results for the interim periods. These adjustments were of a normal recurring nature. The results for the three-month period ended March 31, 2013, are not necessarily indicative of future financial results. The term “earnings” is defined as net income attributable to Chevron Corporation.

Certain notes and other information have been condensed or omitted from the interim financial statements presented in this Quarterly Report on Form 10-Q. Therefore, these financial statements should be read in conjunction with the company’s 2012 Annual Report on Form 10-K.

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Consolidated Statement of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Net Income	$ 6,239		$ 6,499
Currency translation adjustment	(11)		14
Unrealized holding gain (loss) on securities:
Net gain (loss) arising during period	(1)		1
Derivatives:
Net derivatives gain on hedge transactions	0		10
Reclassification to net income of net realized (loss) gain	5		(6)
Income taxes benefit (expense) on derivatives transactions	2		(6)
Total	(3)		10
Actuarial loss:
Amortization to net income of net actuarial and settlement losses	227		273
Actuarial loss arising during period	0		(43)
Prior service cost:
Amortization to net income of net prior service credits	(7)		(14)
Defined benefit plans sponsored by equity affiliates	(20)		11
Income taxes on defined benefit plans	85		105
Total	(115)		(122)
Other Comprehensive Gain, Net of Tax	100	[1]	147
Comprehensive Income	6,339		6,646
Comprehensive income attributable to noncontrolling interests	(61)		(28)
Comprehensive Income Attributable to Chevron Corporation	$ 6,278		$ 6,618

[1] All amounts are net of tax.

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Other Contingencies and Commitments

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Other Contingencies and Commitments

Other Contingencies and Commitments

Income Taxes The company calculates its income tax expense and liabilities quarterly. These liabilities generally are subject to audit and are not finalized with the individual taxing authorities until several years after the end of the annual period for which income taxes have been calculated. Refer to Note 8 on page 14 for a discussion of the periods for which tax returns have been audited for the company’s major tax jurisdictions.

As discussed on page 14, Chevron is currently assessing the potential impact of a decision by the U.S. Court of Appeals for the Third Circuit that disallows the Historic Rehabilitation Tax Credits claimed by an unrelated taxpayer. It is reasonably possible that the specific findings from this assessment could result in a significant increase in unrecognized tax benefits, which may have a material effect on the company's results of operations in any one reporting period. The company does not expect settlement of income tax liabilities associated with uncertain tax positions to have a material effect on its consolidated financial position or liquidity.

Guarantees The company and its subsidiaries have certain other contingent liabilities with respect to guarantees, direct or indirect, of debt of affiliated companies or third parties. Under the terms of the guarantee arrangements, the company would generally be required to perform should the affiliated company or third party fail to fulfill its obligations under the arrangements. In some cases, the guarantee arrangements may have recourse provisions that would enable the company to recover any payments made under the terms of the guarantees from assets provided as collateral.

Indemnifications In the acquisition of Unocal, the company assumed certain indemnities relating to contingent environmental liabilities associated with assets that were sold in 1997. The acquirer of those assets shared in certain environmental remediation costs up to a maximum obligation of $200 million, which had been reached at December 31, 2009. Under the indemnification agreement, after reaching the $200 million obligation, Chevron is solely responsible until April 2022, when the indemnification expires. The environmental conditions or events that are subject to these indemnities must have arisen prior to the sale of the assets in 1997.

Although the company has provided for known obligations under this indemnity that are probable and reasonably estimable, the amount of additional future costs may be material to results of operations in the period in which they are recognized. The company does not expect these costs will have a material effect on its consolidated financial position or liquidity.

Off-Balance-Sheet Obligations The company and its subsidiaries have certain other contingent liabilities with respect to long-term unconditional purchase obligations and commitments, including throughput and take-or-pay agreements, some of which relate to suppliers’ financing arrangements. The agreements typically provide goods and services, such as pipeline and storage capacity, drilling rigs, utilities, and petroleum products, to be used or sold in the ordinary course of the company’s business.

Environmental The company is subject to loss contingencies pursuant to laws, regulations, private claims and legal proceedings related to environmental matters that are subject to legal settlements or that in the future may require the company to take action to correct or ameliorate the effects on the environment of prior release of chemicals or petroleum substances, including MTBE, by the company or other parties. Such contingencies may exist for various sites, including, but not limited to, federal Superfund sites and analogous sites under state laws, refineries, crude oil fields, service stations, terminals, land development areas, and mining operations, whether operating, closed or divested. These future costs are not fully determinable due to such factors as the unknown magnitude of possible contamination, the unknown timing and extent of the corrective actions that may be required, the determination of the company’s liability in proportion to other responsible parties, and the extent to which such costs are recoverable from third parties.

Although the company has provided for known environmental obligations that are probable and reasonably estimable, the amount of additional future costs may be material to results of operations in the period in which

they are recognized. The company does not expect these costs will have a material effect on its consolidated financial position or liquidity. Also, the company does not believe its obligations to make such expenditures have had, or will have, any significant impact on the company’s competitive position relative to other U.S. or international petroleum or chemical companies.

Other Contingencies On April 26, 2010, a California appeals court issued a ruling related to the adequacy of an Environmental Impact Report (EIR) supporting the issuance of certain permits by the city of Richmond, California, to replace and upgrade certain facilities at Chevron's refinery in Richmond. Settlement discussions with plaintiffs in the case ended late fourth quarter 2010, and on March 3, 2011, the trial court entered a final judgment and peremptory writ ordering the City to set aside the project EIR and conditional use permits and enjoining Chevron from any further work. On May 23, 2011, the company filed an application with the City Planning Department for a conditional use permit for a revised project to complete construction of the hydrogen plant, certain sulfur removal facilities and related infrastructure. On June 10, 2011, the City published its Notice of Preparation of the revised EIR for the project. The revised and recirculated EIR is intended to comply with the appeals court decision. Management believes the outcomes associated with the project are uncertain. Due to the uncertainty of the company's future course of action, or potential outcomes of any action or combination of actions, management does not believe an estimate of the financial effects, if any, can be made at this time.

Chevron receives claims from and submits claims to customers; trading partners; U.S. federal, state and local regulatory bodies; governments; contractors; insurers; and suppliers. The amounts of these claims, individually and in the aggregate, may be significant and take lengthy periods to resolve.

The company and its affiliates also continue to review and analyze their operations and may close, abandon, sell, exchange, acquire or restructure assets to achieve operational or strategic benefits and to improve competitiveness and profitability. These activities, individually or together, may result in gains or losses in future periods.

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Document and Entity Information	3 Months Ended
	Mar. 31, 2013
Document and Entity Information [Abstract]
Entity Registrant Name	CHEVRON CORP
Entity Central Index Key	0000093410
Document Type	10-Q
Document Period End Date	Mar. 31, 2013
Amendment Flag	false
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	1,938,977,775

XML

Fair Value Measurements

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

Accounting standards for fair value measurement (ASC 820) establish a framework for measuring fair value and stipulate disclosures about fair value measurements. The standards apply to recurring and nonrecurring fair value measurements of financial and nonfinancial assets and liabilities. Among the required disclosures is the fair value hierarchy of inputs the company uses to value an asset or a liability. The three levels of the fair value hierarchy are described as follows:

Level 1: Quoted prices (unadjusted) in active markets for identical assets and liabilities. For the company, Level 1 inputs include exchange-traded futures contracts for which the parties are willing to transact at the exchange-quoted price and marketable securities that are actively traded.

Level 2: Inputs other than Level 1 that are observable, either directly or indirectly. For the company, Level 2 inputs include quoted prices for similar assets or liabilities, prices obtained through third-party broker quotes and prices that can be corroborated with other observable inputs for substantially the complete term of a contract.

Level 3: Unobservable inputs. The company does not use Level 3 inputs for any of its recurring fair value measurements. Level 3 inputs may be required for the determination of fair value associated with certain nonrecurring measurements of nonfinancial assets and liabilities.

The fair value hierarchy for assets and liabilities measured at fair value on a recurring basis at March 31, 2013 and December 31, 2012 is as follows:

Assets and Liabilities Measured at Fair Value on a Recurring Basis

(Millions of dollars)

	At March 31, 2013								At December 31, 2012
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Marketable Securities	$	266	$	266	$	—	$	—	$	266	$	266	$	—	$	—
Derivatives	64		2		62		—		86		21		65		—
Total Assets at Fair Value	$	330	$	268	$	62	$	—	$	352	$	287	$	65	$	—
Derivatives	110		106		4		—		149		148		1		—
Total Liabilities at Fair Value	$	110	$	106	$	4	$	—	$	149	$	148	$	1	$	—

Marketable Securities The company calculates fair value for its marketable securities based on quoted market prices for identical assets. The fair values reflect the cash that would have been received if the instruments were sold at March 31, 2013.

Derivatives The company records its derivative instruments — other than any commodity derivative contracts that are designated as normal purchase and normal sale — on the Consolidated Balance Sheet at fair value, with the offsetting amount to the Consolidated Statement of Income. For derivatives with identical or similar provisions as contracts that are publicly traded on a regular basis, the company uses the market values of the publicly traded instruments as an input for fair value calculations.

The company’s derivative instruments principally include futures, swaps, options and forward contracts for crude oil, natural gas and refined products. Derivatives classified as Level 1 include futures, swaps and options contracts traded in active markets such as the New York Mercantile Exchange.

Derivatives classified as Level 2 include swaps, options and forward contracts principally with financial institutions and other oil and gas companies, the fair values of which are obtained from third-party broker quotes, industry pricing services and exchanges. The company obtains multiple sources of pricing information for the Level 2 instruments. Since this pricing information is generated from observable market data, it has historically been very consistent. The company does not materially adjust this information. The company incorporates internal review, evaluation and assessment procedures, including a comparison of Level 2 fair values derived from the company’s internally developed forward curves (on a sample basis), with the pricing information to document reasonable, logical and supportable fair value determinations and proper level of classification.

Assets carried at fair value at March 31, 2013, and December 31, 2012, are as follows:

Cash and Cash Equivalents and Time Deposits The company holds cash equivalents and bank time deposits in U.S. and non-U.S. portfolios. The instruments classified as cash equivalents are primarily bank time deposits with maturities of 90 days or less, and money market funds. “Cash and cash equivalents” had carrying/fair values of $17.4 billion and $20.9 billion at March 31, 2013, and December 31, 2012, respectively. The instruments held in “Time deposits” are bank time deposits with maturities greater than 90 days and had carrying/fair values of $1.4 billion and $0.7 billion at March 31, 2013, and December 31, 2012, respectively. The fair values of cash, cash equivalents and bank time deposits are classified as Level 1 and reflect the cash that would have been received if the instruments were settled at March 31, 2013.

Restricted Cash had a carrying/fair value of $1.1 billion and $1.5 billion at March 31, 2013, and December 31, 2012, respectively. At March 31, 2013, restricted cash is classified as Level 1 and is reported in “Deferred charges and other assets” on the face of the Consolidated Balance Sheet, and includes restricted funds related to certain Upstream abandonment activities, tax payments, funds held in escrow for an asset acquisition and a capital investment project.

The carrying values of other short-term financial assets and liabilities, including short-term debt reclassified to long-term, on the consolidated balance sheet approximate their fair values. Fair value remeasurements of other financial instruments at March 31, 2013 and 2012 were not material.

The fair value hierarchy for assets and liabilities measured at fair value on a nonrecurring basis at March 31, 2013 is as follows:

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

(Millions of dollars)

	At March 31, 2013
	Total		Level 1		Level 2		Level 3		Before-Tax Loss
Properties, plant and equipment, net (held and used)	$	—	$	—	$	—	$	—	$	4
Properties, plant and equipment, net (held for sale)	104		—		—		104		78
Investments and advances	—		—		—		—		—
Total Assets at Fair Value	$	104	$	—	$	—	$	104	$	82

Properties, plant and equipment The company did not have any material impairments of long-lived assets measured at fair value on a nonrecurring basis to report in first quarter2013.

Investments and advances The company did not have any impairments of investments and advances measured at fair value on a nonrecurring basis to report in first quarter2013.

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Consolidated Balance Sheet (Unaudited) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
ASSETS
Cash and cash equivalents	$ 17,374		$ 20,939
Time deposits	1,408		708
Marketable securities	266		266
Accounts and notes receivable, net	21,969		20,997
Inventories
Crude oil and petroleum products	4,384		3,923
Chemicals	477		475
Materials, supplies and other	1,803		1,746
Total inventories	6,664		6,144
Prepaid expenses and other current assets	7,015		6,666
Total Current Assets	54,696		55,720
Long-term receivables, net	3,121		3,053
Investments and advances	24,504		23,718
Properties, plant and equipment, at cost	271,239		263,481
Less: Accumulated depreciation, depletion and amortization	125,266		122,133
Properties, plant and equipment, net	145,973		141,348
Deferred charges and other assets	4,476		4,503
Goodwill	4,640		4,640
Total Assets	237,410		232,982
LIABILITIES AND EQUITY
Short-term debt	2,090		127
Accounts payable	21,617		22,776
Accrued liabilities	5,048		5,738
Federal and other taxes on income	4,711		4,341
Other taxes payable	1,219		1,230
Total Current Liabilities	34,685		34,212
Long-term debt	11,960		11,966
Capital lease obligations	93		99
Deferred credits and other noncurrent obligations	21,623		21,502
Noncurrent deferred income taxes	18,046		17,672
Reserves for employee benefit plans	9,517		9,699
Total Liabilities	95,924		95,150
Preferred stock (authorized 100,000,000 shares, $1.00 par value, none issued)	0		0
Common stock (authorized 6,000,000,000 shares; $0.75 par value; 2,442,676,580 shares issued at March 31, 2013, and December 31, 2012)	1,832		1,832
Capital in excess of par value	15,585		15,497
Retained earnings	164,173		159,730
Accumulated other comprehensive loss	(6,269)	[1]	(6,369)	[1]
Deferred compensation and benefit plan trust	(262)		(282)
Treasury stock, at cost (503,698,805 and 495,978,691 shares at March 31, 2013, and December 31, 2012, respectively)	(34,925)		(33,884)
Total Chevron Corporation Stockholders’ Equity	140,134		136,524
Noncontrolling interests	1,352		1,308
Total Equity	141,486		137,832
Total Liabilities and Equity	$ 237,410		$ 232,982

[1] All amounts are net of tax.

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Summarized Financial Data - Chevron U.S.A. Inc. (Chevron U.S.A. Inc. [Member])

3 Months Ended

Mar. 31, 2013

Chevron U.S.A. Inc. [Member]

Summarized Financial Data - Chevron U.S.A. Inc.

Summarized Financial Data — Chevron U.S.A. Inc.

Chevron U.S.A. Inc. (CUSA) is a major subsidiary of Chevron Corporation. CUSA and its subsidiaries manage and operate most of Chevron’s U.S. businesses. Assets include those related to the exploration and production of crude oil, natural gas and natural gas liquids and those associated with refining, marketing, and supply and distribution of products derived from petroleum, excluding most of the regulated pipeline operations of Chevron. CUSA also holds the company’s investment in the Chevron Phillips Chemical Company LLC joint venture, which is accounted for using the equity method.

The summarized financial information for CUSA and its consolidated subsidiaries is as follows:

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Sales and other operating revenues	$	42,777	$	47,134
Costs and other deductions	41,717		45,106
Net income attributable to CUSA	889		1,364

	At March 31 2013		At December 31 2012
	(Millions of dollars)
Current assets	$	18,881	$	18,983
Other assets	52,804		52,082
Current liabilities	17,703		18,161
Other liabilities	26,689		26,472
Total CUSA net equity	$	27,293	$	26,432
Memo: Total debt	$	14,484	$	14,482

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Operating Segments and Geographic Data

3 Months Ended

Mar. 31, 2013

Segment Reporting [Abstract]

Operating Segments and Geographic Data

Operating Segments and Geographic Data

Although each subsidiary of Chevron is responsible for its own affairs, Chevron Corporation manages its investments in these subsidiaries and their affiliates. The investments are grouped into two business segments, Upstream and Downstream, representing the company’s “reportable segments” and “operating segments” as defined in accounting standards for segment reporting (ASC 280). Upstream operations consist primarily of exploring for, developing and producing crude oil and natural gas; liquefaction, transportation and regasification associated with liquefied natural gas (LNG); transporting crude oil by major international oil export pipelines; processing, transporting, storage and marketing of natural gas; and a gas-to-liquids project. Downstream operations consist primarily of refining of crude oil into petroleum products; marketing of crude oil and refined products; transporting of crude oil and refined products by pipeline, marine vessel, motor equipment and rail car; and manufacturing and marketing of commodity petrochemicals, plastics for industrial uses, and fuel and lubricant additives. All Other activities of the company include mining operations, power generation businesses, worldwide cash management and debt financing activities, corporate administrative functions, insurance operations, real estate activities, energy services, alternative fuels, and technology companies.

The segments are separately managed for investment purposes under a structure that includes “segment managers” who report to the company’s “chief operating decision maker” (CODM) (terms as defined in ASC 280). The CODM is the company’s Executive Committee (EXCOM), a committee of senior officers that includes the Chief Executive Officer, and EXCOM reports to the Board of Directors of Chevron Corporation.

The operating segments represent components of the company, as described in accounting standards for segment reporting (ASC 280), that engage in activities (a) from which revenues are earned and expenses are incurred; (b) whose operating results are regularly reviewed by the CODM, which makes decisions about resources to be allocated to the segments and assesses their performance; and (c) for which discrete financial information is available.

Segment managers for the reportable segments are directly accountable to, and maintain regular contact with, the company’s CODM to discuss the segment’s operating activities and financial performance. The CODM approves annual capital and exploratory budgets at the reportable segment level, as well as reviews capital and exploratory funding for major projects and approves major changes to the annual capital and exploratory budgets. However, business-unit managers within the operating segments are directly responsible for decisions relating to project implementation and all other matters connected with daily operations. Company officers who are members of the EXCOM also have individual management responsibilities and participate in other committees for purposes other than acting as the CODM.

The company’s primary country of operation is the United States of America, its country of domicile. Other components of the company’s operations are reported as “International” (outside the United States).

Segment Earnings The company evaluates the performance of its operating segments on an after-tax basis, without considering the effects of debt financing interest expense or investment interest income, both of which are managed by the company on a worldwide basis. Corporate administrative costs and assets are not allocated to the operating segments. However, operating segments are billed for the direct use of corporate services. Nonbillable costs remain at the corporate level in “All Other.” Earnings by major operating area for the three-month period ended March 31, 2013, and 2012, are presented in the following table:

Segment Earnings	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Upstream
United States	$	1,132		$	1,529
International	4,784			4,642
Total Upstream	5,916			6,171
Downstream
United States	135			459
International	566			345
Total Downstream	701			804
Total Segment Earnings	6,617			6,975
All Other
Interest Income	21			20
Other	(460		)	(524		)
Net Income Attributable to Chevron Corporation	$	6,178		$	6,471

Segment Assets Segment assets do not include intercompany investments or intercompany receivables. “All Other” assets consist primarily of worldwide cash, cash equivalents, time deposits and marketable securities; real estate; information systems; mining operations; power generation businesses; energy services; alternative fuels; technology companies; and assets of the corporate administrative functions. Segment assets at March 31, 2013, and December 31, 2012, are as follows:

Segment Assets	At March 31 2013		At December 31 2012
	(Millions of dollars)
Upstream
United States	$	42,477	$	41,891
International	120,926		115,806
Goodwill	4,640		4,640
Total Upstream	168,043		162,337
Downstream
United States	23,982		23,023
International	20,958		20,024
Total Downstream	44,940		43,047
Total Segment Assets	212,983		205,384
All Other
United States	6,118		7,727
International	18,309		19,871
Total All Other	24,427		27,598
Total Assets — United States	72,577		72,641
Total Assets — International	160,193		155,701
Goodwill	4,640		4,640
Total Assets	$	237,410	$	232,982

Segment Sales and Other Operating Revenues Segment sales and other operating revenues, including internal transfers, for the three-month period ended March 31, 2013, and 2012, are presented in the following table. Products are transferred between operating segments at internal product values that approximate market prices. Revenues for the upstream segment are derived primarily from the production and sale of crude oil and natural gas, as well as the sale of third-party production of natural gas. Revenues for the downstream segment are derived from the refining and marketing of petroleum products such as gasoline, jet fuel, gas oils, lubricants, residual fuel oils and other products derived from crude oil. This segment also generates revenues from the manufacture and sale of fuel and lubricant additives and the transportation and trading of refined products and crude oil. “All Other” activities include revenues from mining operations, power generation businesses, insurance operations, real estate activities, energy services, alternative fuels, and technology companies.

Sales and Other Operating Revenues	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Upstream
United States	$	6,267		$	6,201
International	12,911			14,515
Subtotal	19,178			20,716
Intersegment Elimination — United States	(4,194		)	(4,597		)
Intersegment Elimination — International	(8,356		)	(9,226		)
Total Upstream	6,628			6,893
Downstream
United States	20,430			22,684
International	27,178			29,250
Subtotal	47,608			51,934
Intersegment Elimination — United States	(11		)	(15		)
Intersegment Elimination — International	(16		)	(11		)
Total Downstream	47,581			51,908
All Other
United States	378			326
International	6			12
Subtotal	384			338
Intersegment Elimination — United States	(292		)	(231		)
Intersegment Elimination — International	(5		)	(12		)
Total All Other	87			95
Sales and Other Operating Revenues
United States	27,075			29,211
International	40,095			43,777
Subtotal	67,170			72,988
Intersegment Elimination — United States	(4,497		)	(4,843		)
Intersegment Elimination — International	(8,377		)	(9,249		)
Total Sales and Other Operating Revenues	$	54,296		$	58,896

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Changes in Accumulated Other Comprehensive Losses (Tables)

3 Months Ended

Mar. 31, 2013

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

The change in Accumulated Other Comprehensive Losses (AOCL) presented on the Consolidated Balance Sheet and the impact of significant amounts reclassified from AOCL on information presented in the Consolidated Statement of Income for the three months ending March 31, 2013, are reflected in the table below.

Changes in Accumulated Other Comprehensive Income (Loss) by Component ⁽¹⁾ 

(Millions of Dollars)

	Three Months Ended March 31, 2013
	Currency Translation Adjustment			Unrealized Holding Gains (Losses) on Securities			Derivatives			Defined Benefit Plans			Total
Balance at January 1	$	(65	)	$	1		$	125		$	(6,430	)	$	(6,369	)
Components of Other Comprehensive Income (Loss):
Before Reclassifications	(11		)	(1		)	—			(25		)	(37		)
Reclassifications (2)	—			—			(3		)	140			137
Net Other Comprehensive Income (Loss)	(11		)	(1		)	(3		)	115			100
Balance at March 31	$	(76	)	$	—		$	122		$	(6,315	)	$	(6,269	)

⁽¹⁾ All amounts are net of tax.

⁽²⁾ Refer to Note 9, Employee Benefits for reclassified components totaling $220 million that are included in employee benefit costs for the three months ending March 31, 2013. Related income taxes for the same period, totaling $80 million, are reflected in Income Tax Expense on the Consolidated Statement of Income. All other reclassified amounts were insignificant.

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Derivative Instruments and Hedging Activities

3 Months Ended

Mar. 31, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities

Derivative Instruments and Hedging Activities

The company’s derivative instruments principally include crude oil, natural gas and refined product futures, swaps, options, and forward contracts. None of the company’s derivative instruments is designated as a hedging instrument, although certain of the company’s affiliates make such a designation. The company’s derivatives are not material to the company’s financial position, results of operations or liquidity. The company believes it has no material market or credit risks to its operations, financial position or liquidity as a result of its commodities and other derivatives activities.

Derivative instruments measured at fair value at March 31, 2013, and December 31, 2012, and their classification on the Consolidated Balance Sheet and Consolidated Statement of Income are as follows:

Consolidated Balance Sheet: Fair Value of Derivatives Not Designated as Hedging Instruments

(Millions of Dollars)

Type of Contract	Balance Sheet Classification	At March 31 2013		At December 31 2012
Commodity	Accounts and notes receivable, net	$	41	$	57
Commodity	Long-term receivables, net	23		29
Total Assets at Fair Value		$	64	$	86
Commodity	Accounts payable	$	77	$	112
Commodity	Deferred credits and other noncurrent obligations	33		37
Total Liabilities at Fair Value		$	110	$	149

Consolidated Statement of Income: The Effect of Derivatives Not Designated as Hedging Instruments

(Millions of dollars)

		Gain / (Loss) Three Months Ended March 31
Type of Contract	Statement of Income Classification	2013			2012
Commodity	Sales and other operating revenues	$	(75	)	$	(118	)
Commodity	Purchased crude oil and products	(4		)	(19		)
Commodity	Other income	(1		)	5
		$	(80	)	$	(132	)

The table below represents gross and net derivative assets and liabilities subject to netting agreements on the Statement of Financial Position at March 31, 2013.

Consolidated Balance Sheet: The Effect of Netting Derivative Assets and Liabilities

(Millions of dollars)

	At March 31, 2013
	Gross Amount Recognized		Gross Amounts Offset in Statement of Financial Position		Net Amounts Presented in the Statement of Financial Position		Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments		Net Amount
Derivative Assets	$	999	$	935	$	64	$	57	$	7
Derivative Liabilities	$	1,045	$	935	$	110	$	12	$	98

Derivative assets and liabilities are classified on the Consolidated Balance Sheet as short-term and long-term accounts receivable and accounts payable.

The company uses derivative commodity instruments traded on the New York Mercantile Exchange and on electronic platforms of the Inter-Continental Exchange and Chicago Mercantile Exchange. In addition, the company enters into swap contracts and option contracts principally with major financial institutions and other oil and gas companies in the “over-the-counter” markets which are governed by International Swaps and Derivatives Association agreements and other master netting arrangements. Amounts not offset on the Consolidated Balance sheet represent positions that do not meet all the conditions for "a right of offset".

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Employee Benefits

3 Months Ended

Mar. 31, 2013

Compensation and Retirement Disclosure [Abstract]

Employee Benefits

Employee Benefits

Chevron has defined benefit pension plans for many employees. The company typically prefunds defined benefit plans as required by local regulations or in certain situations where prefunding provides economic advantages. In the United States, all qualified plans are subject to the Employee Retirement Income Security Act (ERISA) minimum funding standard. The company does not typically fund U.S. nonqualified pension plans that are not subject to funding requirements under laws and regulations because contributions to these pension plans may be less economic and investment returns may be less attractive than the company’s other investment alternatives.

The company also sponsors other postretirement (OPEB) plans that provide medical and dental benefits, as well as life insurance for some active and qualifying retired employees. The plans are unfunded, and the company and the retirees share the costs. Medical coverage for Medicare-eligible retirees in the company’s main U.S. medical plan is secondary to Medicare (including Part D) and the increase to the company contribution for retiree medical coverage is limited to no more than 4 percent each year. Certain life insurance benefits are paid by the company.

The components of net periodic benefit costs for 2013 and 2012 are as follows:

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Pension Benefits
United States
Service cost	$	124		$	113
Interest cost	118			109
Expected return on plan assets	(175		)	(159		)
Amortization of prior service credits	—			(2		)
Amortization of actuarial losses	121			118
Settlement losses	57			74
Total United States	245			253
International
Service cost	48			44
Interest cost	77			79
Expected return on plan assets	(68		)	(66		)
Amortization of prior service costs	5			5
Amortization of actuarial losses	36			33
Total International	98			95
Net Periodic Pension Benefit Costs	$	343		$	348
Other Benefits*
Service cost	$	18		$	15
Interest cost	40			39
Amortization of prior service credits	(12		)	(18		)
Amortization of actuarial losses	13			15
Settlement gains	—			(26		)
Net Periodic Other Benefit Costs	$	59		$	25

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* Includes costs for U.S. and international OPEB plans. Obligations for plans outside the United States are not significant relative to the company’s total OPEB obligation.

The company has estimated it would contribute $1.0 billion to employee pension plans during 2013 (composed of $650 million for the U.S. plans and $350 million for the international plans). Through March 31, 2013, a total of $238 million was contributed (including $196 million to the U.S. plans). Actual contribution amounts are dependent upon plan investment returns, changes in pension obligations, regulatory requirements and other economic factors. Additional funding may ultimately be required if investment returns are insufficient to offset increases in plan obligations.

During the first three months of 2013, the company contributed $51 million to its OPEB plans. The company anticipates contributing approximately $177 million during the remainder of 2013.

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Summarized Financial Data - Chevron Transport Corporation (Chevron Transport Corporation [Member])

3 Months Ended

Mar. 31, 2013

Chevron Transport Corporation [Member]

Summarized Financial Data - Chevron Transport Corporation

Summarized Financial Data — Chevron Transport Corporation

Chevron Transport Corporation Limited (CTC), incorporated in Bermuda, is an indirect, wholly owned subsidiary of Chevron Corporation. CTC is the principal operator of Chevron’s international tanker fleet and is engaged in the marine transportation of crude oil and refined petroleum products. Most of CTC’s shipping revenue is derived from providing transportation services to other Chevron companies. Chevron Corporation has fully and unconditionally guaranteed this subsidiary’s obligations in connection with certain debt securities.

During 2012, CTC implemented legal reorganizations in which certain Chevron business units transferred assets out of CTC. The summarized financial information for CTC and its consolidated subsidiaries presented in this table below gives retroactive effect to the reorganizations as if they had occurred on January 1, 2012. However, the financial information in the following table may not reflect the financial position and operating results in the periods presented if the reorganization had occurred on that date. Summarized income statement information for CTC and its consolidated subsidiaries is as follows:

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Sales and other operating revenues	$	131		$	145
Costs and other deductions	172			183
Net loss attributable to CTC	(41		)	(38		)

Summarized balance sheet information for CTC and its consolidated subsidiaries is as follows:

	At March 31 2013			At December 31 2012
	(Millions of dollars)
Current assets	$	212		$	199
Other assets	312			313
Current liabilities	210			154
Other liabilities	414			415
Total CTC net (deficit) equity	$	(100	)	$	(57	)

There were no restrictions on CTC’s ability to pay dividends or make loans or advances at March 31, 2013.

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Income Taxes

3 Months Ended

Mar. 31, 2013

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

Taxes on income for the first quarter of 2013 were $4.0 billion, compared with $5.6 billion for the corresponding period in 2012. The associated effective tax rates (calculated as the amount of Income Tax Expense divided by Income Before Income Tax Expense) were 39 percent in 2013 and 46 percent in 2012.

The decrease in the effective tax rate between periods was driven by a lower effective tax rate in international upstream operations. The lower international upstream rate was primarily due to non-recurring tax benefits in the current period and foreign currency remeasurement impacts between periods.

Tax positions for Chevron and its subsidiaries and affiliates are subject to income tax audits by many tax jurisdictions throughout the world. For the company’s major tax jurisdictions, examinations of tax returns for certain prior tax years had not been completed as of March 31, 2013. For these jurisdictions, the latest years for which income tax examinations had been finalized were as follows: United States — 2007, Nigeria — 2000, Angola — 2001, Saudi Arabia — 2003 and Kazakhstan — 2007.

The company engages in ongoing discussions with tax authorities regarding the resolution of tax matters in the various jurisdictions. Both the outcome of these tax matters and the timing of resolution and/or closure of the tax audits are highly uncertain. However, it is reasonably possible that developments regarding tax matters in certain tax jurisdictions may result in significant increases or decreases in the company’s total unrecognized tax benefits within the next 12 months. Given the number of years that still remain subject to examination and the number of matters being examined in the various tax jurisdictions, the company is unable to estimate the range of possible adjustments to the balance of unrecognized tax benefits.

The company is currently assessing the potential impact of an August 2012 decision by the U.S. Court of Appeals for the Third Circuit that disallows the Historic Rehabilitation Tax Credits (HRTCs) claimed by an unrelated taxpayer. The company has claimed a significant amount of HRTCs on its U.S. federal income tax returns in open years, and it is reasonably possible that the specific findings from management's ongoing assessment and evaluation could result in a significant increase in the company's unrecognized tax benefit within the next 12 months.  Any such increase would impact the effective tax rate.

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Litigation

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Litigation

Litigation

MTBE Chevron and many other companies in the petroleum industry have used methyl tertiary butyl ether (MTBE) as a gasoline additive. Chevron is a party to six pending lawsuits and claims, the majority of which involve numerous other petroleum marketers and refiners. Resolution of these lawsuits and claims may ultimately require the company to correct or ameliorate the alleged effects on the environment of prior release of MTBE by the company or other parties. Additional lawsuits and claims related to the use of MTBE, including personal-injury claims, may be filed in the future. The company’s ultimate exposure related to pending lawsuits and claims is not determinable. The company no longer uses MTBE in the manufacture of gasoline in the United States.

Ecuador Chevron is a defendant in a civil lawsuit initiated in the Superior Court of Nueva Loja in Lago Agrio, Ecuador, in May 2003 by plaintiffs who claim to be representatives of certain residents of an area where an oil production consortium formerly had operations. The lawsuit alleges damage to the environment from the oil exploration and production operations and seeks unspecified damages to fund environmental remediation and restoration of the alleged environmental harm, plus a health monitoring program. Until 1992, Texaco Petroleum Company (Texpet), a subsidiary of Texaco Inc., was a minority member of this consortium with Petroecuador, the Ecuadorian state-owned oil company, as the majority partner; since 1990, the operations have been conducted solely by Petroecuador. At the conclusion of the consortium and following an independent third-party environmental audit of the concession area, Texpet entered into a formal agreement with the Republic of Ecuador and Petroecuador for Texpet to remediate specific sites assigned by the government in proportion to Texpet’s ownership share of the consortium. Pursuant to that agreement, Texpet conducted a three-year remediation program at a cost of $40 million. After certifying that the sites were properly remediated, the government granted Texpet and all related corporate entities a full release from any and all environmental liability arising from the consortium operations.

Based on the history described above, Chevron believes that this lawsuit lacks legal or factual merit. As to matters of law, the company believes first, that the court lacks jurisdiction over Chevron; second, that the law under which plaintiffs bring the action, enacted in 1999, cannot be applied retroactively; third, that the claims are barred by the statute of limitations in Ecuador; and, fourth, that the lawsuit is also barred by the releases from liability previously given to Texpet by the Republic of Ecuador and Petroecuador and by the pertinent provincial and municipal governments. With regard to the facts, the company believes that the evidence confirms that Texpet’s remediation was properly conducted and that the remaining environmental damage reflects Petroecuador’s failure to timely fulfill its legal obligations and Petroecuador’s further conduct since assuming full control over the operations.

In 2008, a mining engineer appointed by the court to identify and determine the cause of environmental damage, and to specify steps needed to remediate it, issued a report recommending that the court assess $18.9 billion, which would, according to the engineer, provide financial compensation for purported damages, including wrongful death claims, and pay for, among other items, environmental remediation, health care systems and additional infrastructure for Petroecuador. The engineer’s report also asserted that an additional$8.4 billion could be assessed against Chevron for unjust enrichment. In 2009, following the disclosure by Chevron of evidence that the judge participated in meetings in which businesspeople and individuals holding themselves out as government officials discussed the case and its likely outcome, the judge presiding over the case was recused. In 2010, Chevron moved to strike the mining engineer’s report and to dismiss the case based on evidence obtained through discovery in the United States indicating that the report was prepared by consultants for the plaintiffs before being presented as the mining engineer’s independent and impartial work and showing further evidence of misconduct. In August 2010, the judge issued an order stating that he was not bound by the mining engineer’s report and requiring the parties to provide their positions on damages within 45 days. Chevron subsequently petitioned for recusal of the judge, claiming that he had disregarded evidence of fraud and misconduct and that he had failed to rule on a number of motions within the statutory time requirement.

In September 2010, Chevron submitted its position on damages, asserting that no amount should be assessed against it. The plaintiffs’ submission, which relied in part on the mining engineer’s report, took the position that damages are between approximately $16 billion and $76 billion and that unjust enrichment should be assessed in an amount between approximately $5 billion and $38 billion. The next day, the judge issued an order closing the evidentiary phase of the case and notifying the parties that he had requested the case file so that he could prepare a judgment. Chevron petitioned to have that order declared a nullity in light of Chevron’s prior recusal petition, and because procedural and evidentiary matters remained unresolved. In October 2010, Chevron’s motion to recuse the judge was granted. A new judge took charge of the case and revoked the prior judge’s order closing the evidentiary phase of the case. On December 17, 2010, the judge issued an order closing the evidentiary phase of the case and notifying the parties that he had requested the case file so that he could prepare a judgment.

On February 14, 2011, the provincial court in Lago Agrio rendered an adverse judgment in the case. The court rejected Chevron’s defenses to the extent the court addressed them in its opinion. The judgment assessed

approximately $8.6 billion in damages and approximately $900 million as an award for the plaintiffs’ representatives. It also assessed an additional amount of approximately $8.6 billion in punitive damages unless the company issued a public apology within 15 days of the judgment, which Chevron did not do. On February 17, 2011, the plaintiffs appealed the judgment, seeking increased damages, and on March 11, 2011, Chevron appealed the judgment seeking to have the judgment nullified. On January 3, 2012, an appellate panel in the provincial court affirmed the February 14, 2011 decision and ordered that Chevron pay additional attorneys’ fees in the amount of “0.10% of the values that are derived from the decisional act of this judgment.” The plaintiffs filed a petition to clarify and amplify the appellate decision on January 6, 2012, and the court issued a ruling in response on January 13, 2012, purporting to clarify and amplify its January 3, 2012 ruling, which included clarification that the deadline for the company to issue a public apology to avoid the additional amount of approximately $8.6 billion in punitive damages was within 15 days of the clarification ruling, or February 3, 2012. Chevron did not issue an apology because doing so might be mischaracterized as an admission of liability and would be contrary to facts and evidence submitted at trial. On January 20, 2012, Chevron appealed (called a petition for cassation) the appellate panel’s decision to Ecuador’s National Court of Justice. As part of the appeal, Chevron requested the suspension of any requirement that Chevron post a bond to prevent enforcement under Ecuadorian law of the judgment during the cassation appeal. On February 17, 2012, the appellate panel of the provincial court admitted Chevron’s cassation appeal in a procedural step necessary for the National Court of Justice to hear the appeal. The provincial court appellate panel denied Chevron’s request for suspension of the requirement that Chevron post a bond and stated that it would not comply with the First and Second Interim Awards of the international arbitration tribunal discussed below. On March 29, 2012, the matter was transferred from the provincial court to the National Court of Justice, and on November 22, 2012, the National Court agreed to hear Chevron's cassation appeal. On August 3, 2012, the provincial court in Lago Agrio approved a court-appointed liquidator’s report on damages that calculated the total judgment in the case to be $19.1 billion.

Chevron has no assets in Ecuador and the Lago Agrio plaintiffs’ lawyers have stated in press releases and through other media that they will seek to enforce the Ecuadorian judgment in various countries and otherwise disrupt Chevron’s operations. On May 30, 2012, the Lago Agrio plaintiffs filed an action against Chevron Corporation, Chevron Canada Limited, and Chevron Canada Finance Limited in the Ontario Superior Court of Justice in Ontario, Canada, seeking to recognize and enforce the Ecuadorian judgment. On May 1, 2013, the Ontario Superior Court of Justice stayed this action, subject to the plaintiffs presenting new evidence that Chevron Corporation has a presence in Ontario. On June 27, 2012, the Lago Agrio plaintiffs filed an action against Chevron Corporation in the Superior Court of Justice in Brasilia, Brazil, seeking to recognize and enforce the Ecuadorian judgment. On October 15, 2012, the provincial court in Lago Agrio issued an ex parte embargo order that purports to order the seizure of assets belonging to separate Chevron subsidiaries in Ecuador, Argentina and Colombia. On November 6, 2012, at the request of the Lago Agrio plaintiffs, a court in Argentina issued a Freeze Order against Chevron Argentina S.R.L. and another Chevron subsidiary, Ingeniero Nortberto Priu, requiring shares of both companies to be "embargoed," requiring third parties to withhold 40 percent of any payments due to Chevron Argentina S.R.L. and ordering banks to withhold 40 percent of the funds in Chevron Argentina S.R.L. bank accounts. On December 14th, 2012, the Argentinean court rejected a motion to revoke the Freeze Order but modified it by ordering that third parties are not required to withhold funds but must report their payments. The court also clarified that the Freeze Order relating to bank accounts excludes taxes. On January 30, 2013, an appellate court upheld the Freeze Order. Chevron continues to believe the provincial court’s judgment is illegitimate and unenforceable in Ecuador, the United States and other countries. The company also believes the judgment is the product of fraud, and contrary to the legitimate scientific evidence. Chevron cannot predict the timing or ultimate outcome of the appeals process in Ecuador or any enforcement action. Chevron expects to continue a vigorous defense of any imposition of liability in the Ecuadorian courts and to contest and defend any and all enforcement actions.

Chevron and Texpet filed an arbitration claim in September 2009 against the Republic of Ecuador before an arbitral tribunal presiding in the Permanent Court of Arbitration in The Hague under the Rules of the United Nations Commission on International Trade Law. The claim alleges violations of the Republic of Ecuador’s obligations under the United States–Ecuador Bilateral Investment Treaty (BIT) and breaches of the settlement

and release agreements between the Republic of Ecuador and Texpet (described above), which are investment agreements protected by the BIT. Through the arbitration, Chevron and Texpet are seeking relief against the Republic of Ecuador, including a declaration that any judgment against Chevron in the Lago Agrio litigation constitutes a violation of Ecuador’s obligations under the BIT. On February 9, 2011, the Tribunal issued an Order for Interim Measures requiring the Republic of Ecuador to take all measures at its disposal to suspend or cause to be suspended the enforcement or recognition within and without Ecuador of any judgment against Chevron in the Lago Agrio case pending further order of the Tribunal. On January 25, 2012, the Tribunal converted the Order for Interim Measures into an Interim Award. Chevron filed a renewed application for further interim measures on January 4, 2012, and the Republic of Ecuador opposed Chevron’s application and requested that the existing Order for Interim Measures be vacated on January 9, 2012. On February 16, 2012, the Tribunal issued a Second Interim Award mandating that the Republic of Ecuador take all measures necessary (whether by its judicial, legislative or executive branches) to suspend or cause to be suspended the enforcement and recognition within and without Ecuador of the judgment against Chevron and, in particular, to preclude any certification by the Republic of Ecuador that would cause the judgment to be enforceable against Chevron. On February 27, 2012, the Tribunal issued a Third Interim Award confirming its jurisdiction to hear Chevron’s arbitration claims. On April 9, 2012, the Tribunal issued a scheduling order to hear issues relating to the scope of the settlement and release agreements between the Republic of Ecuador and Texpet, and on July 9, 2012, the Tribunal indicated that it wanted to hear the remaining issues in January 2014. On February 7, 2013, the Tribunal issued its Fourth Interim Award in which it declared that the Republic of Ecuador “has violated the First and Second Interim Awards under the [BIT], the UNCITRAL Rules and international law in regard to the finalization and enforcement subject to execution of the Lago Agrio Judgment within and outside Ecuador, including (but not limited to) Canada, Brazil and Argentina.” A schedule for the Tribunal’s order to show cause hearing will be issued separately.

Through a series of U.S. court proceedings initiated by Chevron to obtain discovery relating to the Lago Agrio litigation and the BIT arbitration, Chevron obtained evidence that it believes shows a pattern of fraud, collusion, corruption, and other misconduct on the part of several lawyers, consultants and others acting for the Lago Agrio plaintiffs. In February 2011, Chevron filed a civil lawsuit in the Federal District Court for the Southern District of New York against the Lago Agrio plaintiffs and several of their lawyers, consultants and supporters, alleging violations of the Racketeer Influenced and Corrupt Organizations Act and other state laws. Through the civil lawsuit, Chevron is seeking relief that includes an award of damages and a declaration that any judgment against Chevron in the Lago Agrio litigation is the result of fraud and other unlawful conduct and is therefore unenforceable. On March 7, 2011, the Federal District Court issued a preliminary injunction prohibiting the Lago Agrio plaintiffs and persons acting in concert with them from taking any action in furtherance of recognition or enforcement of any judgment against Chevron in the Lago Agrio case pending resolution of Chevron’s civil lawsuit by the Federal District Court. On May 31, 2011, the Federal District Court severed claims one through eight of Chevron’s complaint from the ninth claim for declaratory relief and imposed a discovery stay on claims one through eight pending a trial on the ninth claim for declaratory relief. On September 19, 2011, the U.S. Court of Appeals for the Second Circuit vacated the preliminary injunction, stayed the trial on Chevron’s ninth claim, a claim for declaratory relief, that had been set for November 14, 2011, and denied the defendants’ mandamus petition to recuse the judge hearing the lawsuit. The Second Circuit issued its opinion on January 26, 2012 ordering the dismissal of Chevron’s ninth claim for declaratory relief. On February 16, 2012, the Federal District Court lifted the stay on claims one through eight, and on October 18, 2012, the Federal District Court set a trial date of October 15, 2013. On March 22, 2013, Chevron settled its claims against Stratus Consulting, and on April 12, 2013 sworn declarations by representatives of Stratus Consulting were filed with the Court admitting their role and that of the plaintiffs' attorneys in drafting the environmental report of the mining engineer appointed by the provincial court in Lago Agrio.

The ultimate outcome of the foregoing matters, including any financial effect on Chevron, remains uncertain. Management does not believe an estimate of a reasonably possible loss (or a range of loss) can be made in this case. Due to the defects associated with the Ecuadorian judgment, the 2008 engineer’s report on alleged damages and the September 2010 plaintiffs’ submission on alleged damages, management does not believe these

documents have any utility in calculating a reasonably possible loss (or a range of loss). Moreover, the highly uncertain legal environment surrounding the case provides no basis for management to estimate a reasonably possible loss (or a range of loss).

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Information Relating to the Consolidated Statement of Cash Flows (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net (increase) decrease in operating working capital
Increase in accounts and notes receivable	$ (994)	$ (153)
Increase in inventories	(520)	(1,847)
Increase in prepaid expenses and other current assets	(437)	(119)
Decrease in accounts payable and accrued liabilities	(1,759)	(1,027)
Increase in income and other taxes payable	350	351
Net (increase) decrease in operating working capital	(3,360)	(2,795)
Cash Payment for Interest on Debt and For Income Taxes
Interest on debt (net of capitalized interest)	0	36
Income taxes	3,434	4,140
Net (purchases) sales of time deposits
Time deposits purchased	(708)	(8)
Time deposits matured	8	3,308
Net (purchases) sales of time deposits	(700)	3,300
Net sales of marketable securities
Marketable securities purchased	0	0
Marketable securities sold	0	11
Net sales of marketable securities	0	11
Capital expenditures
Additions to properties, plant and equipment	7,935	5,511
Additions to investments	262	192
Current year dry hole expenditures	12	205
Payments for other liabilities and assets, net	(17)	(13)
Capital expenditures	8,192	5,895
Expensed exploration expenditures	235	161
Assets acquired through capital lease obligations	2	0
Capital and exploratory expenditures, excluding equity affiliates	8,429	6,056
Company's share of expenditures by equity affiliates	453	361
Capital and exploratory expenditures, including equity affiliates	$ 8,882	$ 6,417

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Fair Value Measurements (Details Textual) (USD $) In Billions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Fair Value Disclosures [Abstract]
Maturity period of primarily bank time deposits, maximum, classified as cash equivalents and money market funds (in days)	90 days
Cash and cash equivalents	$ 17.4	$ 20.9
Maturity period of bank time deposits, minimum, classified as time deposits (in days)	90 days
Time deposits	1.4	0.7
Restricted cash	$ 1.1	$ 1.5

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Accounting for Suspended Exploratory Wells

3 Months Ended

Mar. 31, 2013

Accounting for Suspended Exploratory Wells [Abstract]

Accounting for Suspended Exploratory Wells

Accounting for Suspended Exploratory Wells

Accounting standards for the costs of exploratory wells (ASC 932) provide that exploratory well costs continue to be capitalized after the completion of drilling when (a) the well has found a sufficient quantity of reserves to justify its completion as a producing well and (b) the entity is making sufficient progress assessing the reserves and the economic and operating viability of the project. If either condition is not met or if an entity obtains information that raises substantial doubt about the economic or operational viability of the project, the exploratory well would be assumed to be impaired, and its costs, net of any salvage value, would be charged to expense. (Note that an entity is not required to complete the exploratory well as a producing well.) The company’s capitalized cost of suspended wells at March 31, 2013, was $2.9 billion, a net increase of $220 million from year-end 2012, primarily due to drilling activities in the United States, Australia and Canada.

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Operating Segments and Geographic Data (Tables)

3 Months Ended

Mar. 31, 2013

Segment Reporting [Abstract]

Segment Earnings

Earnings by major operating area for the three-month period ended March 31, 2013, and 2012, are presented in the following table:

Segment Earnings	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Upstream
United States	$	1,132		$	1,529
International	4,784			4,642
Total Upstream	5,916			6,171
Downstream
United States	135			459
International	566			345
Total Downstream	701			804
Total Segment Earnings	6,617			6,975
All Other
Interest Income	21			20
Other	(460		)	(524		)
Net Income Attributable to Chevron Corporation	$	6,178		$	6,471

Segment Assets

Segment assets at March 31, 2013, and December 31, 2012, are as follows:

Segment Assets	At March 31 2013		At December 31 2012
	(Millions of dollars)
Upstream
United States	$	42,477	$	41,891
International	120,926		115,806
Goodwill	4,640		4,640
Total Upstream	168,043		162,337
Downstream
United States	23,982		23,023
International	20,958		20,024
Total Downstream	44,940		43,047
Total Segment Assets	212,983		205,384
All Other
United States	6,118		7,727
International	18,309		19,871
Total All Other	24,427		27,598
Total Assets — United States	72,577		72,641
Total Assets — International	160,193		155,701
Goodwill	4,640		4,640
Total Assets	$	237,410	$	232,982

Segment Sales and Other Operating Revenues

Sales and Other Operating Revenues	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Upstream
United States	$	6,267		$	6,201
International	12,911			14,515
Subtotal	19,178			20,716
Intersegment Elimination — United States	(4,194		)	(4,597		)
Intersegment Elimination — International	(8,356		)	(9,226		)
Total Upstream	6,628			6,893
Downstream
United States	20,430			22,684
International	27,178			29,250
Subtotal	47,608			51,934
Intersegment Elimination — United States	(11		)	(15		)
Intersegment Elimination — International	(16		)	(11		)
Total Downstream	47,581			51,908
All Other
United States	378			326
International	6			12
Subtotal	384			338
Intersegment Elimination — United States	(292		)	(231		)
Intersegment Elimination — International	(5		)	(12		)
Total All Other	87			95
Sales and Other Operating Revenues
United States	27,075			29,211
International	40,095			43,777
Subtotal	67,170			72,988
Intersegment Elimination — United States	(4,497		)	(4,843		)
Intersegment Elimination — International	(8,377		)	(9,249		)
Total Sales and Other Operating Revenues	$	54,296		$	58,896

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Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Derivatives	$ 64
Fair Value, Measurements, Recurring [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Marketable Securities	266	266
Derivatives	64	86
Total Assets at Fair Value	330	352
Derivatives	110	149
Total Liabilities at Fair Value	110	149
Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Marketable Securities	266	266
Derivatives	2	21
Total Assets at Fair Value	268	287
Derivatives	106	148
Total Liabilities at Fair Value	106	148
Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Marketable Securities	0	0
Derivatives	62	65
Total Assets at Fair Value	62	65
Derivatives	4	1
Total Liabilities at Fair Value	4	1
Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Marketable Securities	0	0
Derivatives	0	0
Total Assets at Fair Value	0	0
Derivatives	0	0
Total Liabilities at Fair Value	$ 0	$ 0

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Summarized Financial Data - Chevron U.S.A. Inc. (Details 1) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Balance Sheet - Chevron U.S.A. Inc.
Current assets	$ 54,696	$ 55,720
Current liabilities	34,685	34,212
Total Equity	141,486	137,832	126,326	122,181
Chevron U.S.A. Inc. [Member]
Balance Sheet - Chevron U.S.A. Inc.
Current assets	18,881	18,983
Other assets	52,804	52,082
Current liabilities	17,703	18,161
Other liabilities	26,689	26,472
Total Equity	27,293	26,432
Memo: Total debt	$ 14,484	$ 14,482

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Consolidated Balance Sheet (Parenthetical) (Unaudited) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.75	$ 0.75
Common stock, shares authorized	6,000,000,000	6,000,000,000
Common stock, shares issued	2,442,676,580	2,442,676,580
Treasury stock, shares	503,698,805	495,978,691

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Information Relating to the Consolidated Statement of Cash Flows

3 Months Ended

Mar. 31, 2013

Supplemental Cash Flow Elements [Abstract]

Information Relating to the Consolidated Statement of Cash Flows

Information Relating to the Consolidated Statement of Cash Flows

The “Net increase in operating working capital” was composed of the following operating changes:

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Increase in accounts and notes receivable	$	(994	)	$	(153	)
Increase in inventories	(520		)	(1,847		)
Increase in prepaid expenses and other current assets	(437		)	(119		)
Decrease in accounts payable and accrued liabilities	(1,759		)	(1,027		)
Increase in income and other taxes payable	350			351
Net increase in operating working capital	$	(3,360	)	$	(2,795	)

The “Net increase in operating working capital” includes reductions of $28 million and $26 million for excess income tax benefits associated with stock options exercised during the three months ended March 31, 2013, and 2012, respectively. These amounts are offset by an equal amount in “Net purchases of treasury shares.”

“Net Cash Provided by Operating Activities” included the following cash payments for interest on debt and for income taxes:

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Interest on debt (net of capitalized interest)	$	—	$	36
Income taxes	3,434		4,140

"Other" includes changes in postretirement benefits obligations and other long-term liabilities.

Information related to "Restricted Cash" is included on page 21 in Note 12 under the heading "Restricted Cash."

The “Net (purchases) sales of time deposits” consisted of the following gross amounts:

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Time deposits purchased	$	(708	)	$	(8	)
Time deposits matured	8			3,308
Net (purchases) sales of time deposits	$	(700	)	$	3,300

The “Net sales of marketable securities” consisted of the following gross amounts:

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Marketable securities purchased	$	—	$	—
Marketable securities sold	—		11
Net sales of marketable securities	$	—	$	11

The “Net purchases of treasury shares” represents the cost of common shares acquired less the cost of shares issued for share-based compensation plans. Purchases totaled $1.3 billion for the first three months in both 2013 and 2012. During the first three months of 2013 and 2012, the company purchased 10.8 million and 11.6 million common shares under its ongoing share repurchase program, respectively, for $1.25 billion in each corresponding period.

The major components of “Capital expenditures” and the reconciliation of this amount to the capital and exploratory expenditures, including equity affiliates, are as follows:

	Three Months Ended March 31
	2013			2012
	(Millions of dollars)
Additions to properties, plant and equipment	$	7,935		$	5,511
Additions to investments	262			192
Current year dry hole expenditures	12			205
Payments for other liabilities and assets, net	(17		)	(13		)
Capital expenditures	8,192			5,895
Expensed exploration expenditures	235			161
Assets acquired through capital lease obligations	2			—
Capital and exploratory expenditures, excluding equity affiliates	8,429			6,056
Company’s share of expenditures by equity affiliates	453			361
Capital and exploratory expenditures, including equity affiliates	$	8,882		$	6,417

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Summarized Financial Data - Chevron U.S.A. Inc. (Tables)

3 Months Ended

Mar. 31, 2013

Summarized Financial Data of Subsidiary One [Abstract]

Summarized Financial Data - Chevron U.S.A. Inc.

The summarized financial information for CUSA and its consolidated subsidiaries is as follows:

	Three Months Ended March 31
	2013		2012
	(Millions of dollars)
Sales and other operating revenues	$	42,777	$	47,134
Costs and other deductions	41,717		45,106
Net income attributable to CUSA	889		1,364

Summarized Financial Data and its Subsidiary

	At March 31 2013		At December 31 2012
	(Millions of dollars)
Current assets	$	18,881	$	18,983
Other assets	52,804		52,082
Current liabilities	17,703		18,161
Other liabilities	26,689		26,472
Total CUSA net equity	$	27,293	$	26,432
Memo: Total debt	$	14,484	$	14,482

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Operating Segments and Geographic Data (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Sales and Other Operating Revenues
Sales and other operating revenues	$ 54,296	[1]	$ 58,896	[1]
Upstream [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	6,628		6,893
Upstream [Member] | United States [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	6,267		6,201
Upstream [Member] | International [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	12,911		14,515
Upstream [Member] | Subtotal [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	19,178		20,716
Upstream [Member] | Intersegment Elimination - United States [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	(4,194)		(4,597)
Upstream [Member] | Intersegment Elimination - International [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	(8,356)		(9,226)
Downstream [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	47,581		51,908
Downstream [Member] | United States [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	20,430		22,684
Downstream [Member] | International [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	27,178		29,250
Downstream [Member] | Subtotal [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	47,608		51,934
Downstream [Member] | Intersegment Elimination - United States [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	(11)		(15)
Downstream [Member] | Intersegment Elimination - International [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	(16)		(11)
All Other Segments [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	87		95
All Other Segments [Member] | United States [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	378		326
All Other Segments [Member] | International [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	6		12
All Other Segments [Member] | Subtotal [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	384		338
All Other Segments [Member] | Intersegment Elimination - United States [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	(292)		(231)
All Other Segments [Member] | Intersegment Elimination - International [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	(5)		(12)
Sales and Other Operating Revenue [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	54,296		58,896
Sales and Other Operating Revenue [Member] | United States [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	27,075		29,211
Sales and Other Operating Revenue [Member] | International [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	40,095		43,777
Sales and Other Operating Revenue [Member] | Subtotal [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	67,170		72,988
Sales and Other Operating Revenue [Member] | Intersegment Elimination - United States [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	(4,497)		(4,843)
Sales and Other Operating Revenue [Member] | Intersegment Elimination - International [Member]
Sales and Other Operating Revenues
Sales and other operating revenues	$ (8,377)		$ (9,249)

[1] * Includes excise, value-added and similar taxes:2,033 1,787

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Long-Term Debt

3 Months Ended

Mar. 31, 2013

Debt Disclosure [Abstract]

Long-Term Debt

Long-Term Debt

The net carrying value of long-term debt, excluding amounts reclassified from short-term, at March 31, 2013, and December 31, 2012 is $6.0 billion and $6.1 billion, respectively. The fair value of long-term debt at March 31, 2013, and December 31, 2012 is $6.6 billion and $6.8 billion, respectively. Long-term debt primarily includes corporate issued bonds. The fair value of corporate bonds is $5.8 billion and classified as Level 1. The fair value of the other bonds is $0.8 billion and classified as Level 2.