Valero Energy (VLO) 10-Q 7 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Jul. 31, 2014
Document and Entity Information	'	'
Entity Registrant Name	'VALERO ENERGY CORP/TX	'
Entity Central Index Key	'0001035002	'
Document Type	'10-Q	'
Document Period End Date	30-Jun-14	'
Amendment Flag	'false	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Current Fiscal Year End Date	'--12-31	'
Entity Well-known Seasoned Issuer	'Yes	'
Entity Voluntary Filers	'No	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	527,963,334

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Current assets:	'	'
Cash and temporary cash investments	$3,480	$4,292
Receivables, net	7,952	8,751
Inventories	6,526	5,758
Income taxes receivable	93	72
Deferred income taxes	275	266
Prepaid expenses and other	124	138
Total current assets	18,450	19,277
Property, plant, and equipment, at cost	34,870	33,933
Accumulated depreciation	-8,748	-8,226
Property, plant, and equipment, net	26,122	25,707
Deferred charges and other assets, net	2,441	2,276
Total assets	47,013	47,260
Current liabilities:	'	'
Current portion of debt and capital lease obligations	601	303
Accounts payable	9,355	9,931
Accrued expenses	584	522
Taxes other than income taxes	1,286	1,345
Income taxes payable	421	773
Deferred income taxes	276	249
Total current liabilities	12,523	13,123
Debt and capital lease obligations, less current portion	5,784	6,261
Deferred income taxes	6,659	6,601
Other long-term liabilities	1,327	1,329
Commitments and contingencies	'	'
Valero Energy Corporation stockholders’ equity:	'	'
Common stock, $0.01 par value; 1,200,000,000 shares authorized; 673,501,593 and 673,501,593 shares issued	7	7
Additional paid-in capital	7,132	7,187
Treasury stock, at cost; 143,579,323 and 137,932,138 common shares	-7,474	-7,054
Retained earnings	20,120	18,970
Accumulated other comprehensive income	426	350
Total Valero Energy Corporation stockholders’ equity	20,211	19,460
Noncontrolling interests	509	486
Total equity	20,720	19,946
Total liabilities and equity	$47,013	$47,260

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Valero Energy Corporation stockholders’ equity:	'	'
Common stock, par value (in usd per share)	$0.01	$0.01
Common stock, shares authorized	1,200,000,000	1,200,000,000
Common stock, shares issued	673,501,593	673,501,593
Treasury stock, common shares	143,579,323	137,932,138

Consolidated_Statements_of_Inc

Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended		6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Operating revenues	$34,914	$34,034	$68,577	$67,508
Costs and expenses:	'	'	'	'
Cost of sales	32,167	31,523	62,797	62,208
Operating expenses:	'	'	'	'
Refining	967	909	1,939	1,788
Retail	0	57	0	226
Ethanol	111	102	240	179
General and administrative expenses	170	233	330	409
Depreciation and amortization expense	414	405	835	835
Total costs and expenses	33,829	33,229	66,141	65,645
Operating income	1,085	805	2,436	1,863
Other income, net	12	11	27	25
Interest and debt expense, net of capitalized interest	-98	-78	-198	-161
Income from continuing operations before income tax expense	999	738	2,265	1,727
Income tax expense	343	276	772	616
Income from continuing operations	656	462	1,493	1,111
Income (loss) from discontinued operations	-63	3	-64	6
Net income	593	465	1,429	1,117
Less: Net income (loss) attributable to noncontrolling interests	5	-1	13	-3
Net income attributable to Valero Energy Corporation stockholders	588	466	1,416	1,120
Net income attributable to Valero Energy Corporation stockholders:	'	'	'	'
Continuing operations	651	463	1,480	1,114
Discontinued operations	-63	3	-64	6
Net income attributable to Valero Energy Corporation stockholders	$588	$466	$1,416	$1,120
Earnings per common share:	'	'	'	'
Continuing operations	$1.23	$0.85	$2.78	$2.03
Discontinued operations	($0.12)	$0.01	($0.12)	$0.01
Total	$1.11	$0.86	$2.66	$2.04
Weighted-average common shares outstanding (in millions)	529	543	530	546
Earnings per common share – assuming dilution:	'	'	'	'
Continuing operations	$1.22	$0.84	$2.77	$2.02
Discontinued operations	($0.12)	$0.01	($0.12)	$0.01
Total	$1.10	$0.85	$2.65	$2.03
Weighted-average common shares outstanding – assuming dilution (in millions)	534	548	535	552
Dividends per common share	$0.25	$0.20	$0.50	$0.40

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net income	$593	$465	$1,429	$1,117
Other comprehensive income (loss):	'	'	'	'
Foreign currency translation adjustment	150	-64	76	-268
Net gain (loss) on pension and other postretirement benefits	0	6	-2	342
Net gain (loss) on derivative instruments designated and qualifying as cash flow hedges	-3	-2	1	-4
Other comprehensive income (loss) before income tax expense (benefit)	147	-60	75	70
Income tax expense (benefit) related to items of other comprehensive income (loss)	-2	1	-1	118
Other comprehensive income (loss)	149	-61	76	-48
Comprehensive income	742	404	1,505	1,069
Less: Comprehensive income (loss) attributable to noncontrolling interests	5	-1	13	-3
Comprehensive income attributable to Valero Energy Corporation stockholders	$737	$405	$1,492	$1,072

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:	'	'
Net income	$1,429	$1,117
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization expense	835	835
Aruba Refinery asset retirement expense and other	63	0
Deferred income tax expense	73	341
Changes in current assets and current liabilities	-1,024	444
Changes in deferred charges and credits and other operating activities, net	2	77
Net cash provided by operating activities	1,378	2,814
Cash flows from investing activities:	'	'
Capital expenditures	-954	-1,211
Deferred turnaround and catalyst costs	-369	-449
Other investing activities, net	-43	-23
Net cash used in investing activities	-1,366	-1,683
Cash flows from financing activities:	'	'
Repayment of debt	-200	-480
Proceeds from the exercise of stock options	32	43
Purchase of common stock for treasury	-455	-560
Common stock dividends	-266	-220
Contributions from noncontrolling interests	14	45
Distributions to public unitholders of Valero Energy Partners LP	-4	0
Disposition of retail business:	'	'
Proceeds from short-term debt in anticipation of separation	0	550
Cash distributed to Valero by CST Brands, Inc.	0	500
Cash held and retained by CST Brands, Inc. upon separation	0	-315
Other financing activities, net	52	24
Net cash used in financing activities	-827	-413
Effect of foreign exchange rate changes on cash	3	-43
Net increase (decrease) in cash and temporary cash investments	-812	675
Cash and temporary cash investments at beginning of period	4,292	1,723
Cash and temporary cash investments at end of period	$3,480	$2,398

Basis_of_Presentation_and_Summ

Basis of Presentation and Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	'
	1	BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Basis of Presentation
	As used in this report, the terms “Valero,” “we,” “us,” or “our” may refer to Valero Energy Corporation, one or more of its consolidated subsidiaries, or all of them taken as a whole.
	These unaudited financial statements have been prepared in accordance with United States (U.S.) generally accepted accounting principles (GAAP) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities Exchange Act of 1934. Accordingly, they do not include all of the information and notes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation have been included. All such adjustments are of a normal recurring nature unless disclosed otherwise. Financial information for the three and six months ended June 30, 2014 and 2013 included in these Condensed Notes to Consolidated Financial Statements is derived from our unaudited financial statements. Operating results for the three and six months ended June 30, 2014 are not necessarily indicative of the results that may be expected for the year ending December 31, 2014.
	The balance sheet as of December 31, 2013 has been derived from our audited financial statements as of that date. For further information, refer to our financial statements and notes thereto included in our annual report on Form 10-K for the year ended December 31, 2013.
	Reclassification
	As discussed in Note 3, in May 2014, we abandoned the Aruba Refinery. As a result, the refinery’s results of operations have been presented as discontinued operations in the consolidated statements of income for all periods presented.
	Significant Accounting Policies
	Use of Estimates
	The preparation of financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. On an ongoing basis, we review our estimates based on currently available information. Changes in facts and circumstances may result in revised estimates.
	Income Taxes
	In July 2013, the provisions of Accounting Standards Codification (ASC) Topic 740, “Income Taxes,” were amended to provide specific guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists at the reporting date. The amendment requires entities to present an unrecognized tax benefit as a reduction to the deferred tax asset generated by the net operating loss carryforward, similar tax loss, or tax credit carryforward, if such items are available to be used to offset the unrecognized tax benefit. These provisions are effective for interim and annual reporting periods beginning after December 15, 2013 and should be applied prospectively to all unrecognized tax benefits that exist at the effective date, with retrospective application permitted. The adoption of this guidance effective January 1, 2014 did not affect our financial position or results of operations, nor did it require any additional disclosures.
	New Accounting Pronouncements
	In April 2014, the provisions of ASC Topic 205, “Presentation of Financial Statements,” and ASC Topic 360, “Property, Plant, and Equipment,” were amended to change the criteria for reporting discontinued operations. The provisions of these amendments modify the definition of discontinued operations by limiting discontinued operations reporting to disposals of components of an entity that represent strategic shifts that have or will have a major effect on an entity’s operations and financial results. These amendments require additional disclosures about discontinued operations and new disclosures for other disposals of individually material components of an organization that do not meet the definition of a discontinued operation. In addition, the guidance allows companies to have significant continuing involvement and continuing cash flows with the discontinued operation. These provisions are effective prospectively for annual reporting periods beginning on or after December 15, 2014, and interim periods within those annual periods, with early adoption permitted. The adoption of this guidance effective January 1, 2015 will not affect our financial position or results of operations; however, it may result in changes to the manner in which future dispositions of operations or assets, if any, are presented in our financial statements, or it may require additional disclosures.
	In May 2014, the Financial Accounting Standards Board amended the ASC and issued a new accounting standard, Topic 606, “Revenue from Contracts with Customers,” to clarify the principles for recognizing revenue. The core principle of the new standard is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard also requires improved interim and annual disclosures that enable the users of financial statements to better understand the nature, amount, timing, and uncertainty of revenues and cash flows arising from contracts with customers. The new standard is effective for annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period, and can be adopted either retrospectively to each prior reporting period presented using a practical expedient as allowed by the new standard or retrospectively with a cumulative effect adjustment to retained earnings as of the date of initial application. Early adoption is not permitted. We are currently evaluating the effect that adopting this new standard will have on our consolidated financial statements and related disclosures.

Valero_Energy_Partners_LP

Valero Energy Partners LP	6 Months Ended
	Jun. 30, 2014
Noncontrolling Interest [Abstract]	'
VALERO ENERGY PARTNERS LP	'
	2	VALERO ENERGY PARTNERS LP
	In July 2013, we formed Valero Energy Partners LP (VLP), a master limited partnership, to own, operate, develop, and acquire crude oil and refined petroleum products pipelines, terminals, and other transportation and logistics assets. On December 16, 2013, VLP completed its initial public offering (the Offering) of 17,250,000 common units at a price of $23.00 per unit. VLP received $369 million in net proceeds from the sale of the units, after deducting underwriting fees, structuring fees, and other offering costs. As of June 30, 2014, VLP’s assets included crude oil and refined petroleum products pipeline and terminal systems in the U.S. Gulf Coast and U.S. Mid-Continent regions that are integral to the operations of our Port Arthur, McKee, and Memphis Refineries.
	As of June 30, 2014 and December 31, 2013, we owned a 68.6 percent limited partner interest and a 2 percent general partner interest in VLP, and the public owned a 29.4 percent limited partner interest. VLP’s cash and temporary cash investments were $382 million and $375 million as of June 30, 2014 and December 31, 2013, respectively. Valero consolidates the financial statements of VLP into its financial statements and as such, VLP’s cash and temporary cash investments are included in Valero’s consolidated cash and temporary cash investments. However, VLP’s cash and temporary cash investments can be used only to settle its obligations. In addition, VLP’s partnership capital attributable to the public’s ownership interest in VLP of $372 million and $370 million as of June 30, 2014 and December 31, 2013, respectively, is reflected in noncontrolling interests.
	We have agreements with VLP that establish fees for certain general and administrative services, and operational and maintenance services provided by us. In addition, we have a master transportation services agreement and a master terminal services agreement with VLP under which VLP provides commercial transportation and terminaling services to us. These transactions are eliminated in consolidation.
	On July 1, 2014, we sold our Texas Crude Systems Business to VLP for total cash consideration of $154 million. The Texas Crude Systems Business is engaged in the business of transporting, terminaling, and storing crude oil and refined petroleum products through various pipeline and terminal systems that compose the McKee Crude System, the Three Rivers Crude System, and the Wynnewood Products System. In connection with this transaction, we entered into additional schedules under our existing master transportation services agreement and master terminal services agreement with VLP with respect to each system. Each system’s schedule constitutes a binding agreement between us and VLP for transportation or terminaling services (as applicable). Each schedule has an initial term of 10 years with one five-year renewal term at our option and contains minimum throughput requirements and inflation escalators. We also amended and restated our omnibus agreement with VLP and amended our services and secondment agreement with the general partner of VLP. Because Valero consolidates the financial statements of VLP into its financial statements, this transaction will be eliminated in consolidation and will not impact Valero’s consolidated financial position or cash flows. As such, Valero’s consolidated cash and temporary cash investments will not change because of this transaction, however VLP’s cash and temporary cash investments will decrease by $154 million.

Discontinued_Operations

Discontinued Operations	6 Months Ended
	Jun. 30, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
DISCONTINUED OPERATIONS	'
	3	DISCONTINUED OPERATIONS
	In May 2014, we decided to abandon our Aruba Refinery, except for the associated crude oil and refined products terminal assets that we continue to operate. As a result of our decision, the refinery’s results of operations have been presented in this report as discontinued operations for the three and six months ended June 30, 2014 and 2013.
	We had suspended operations of the refinery in 2012 and at that time we wrote off the entire carrying value of the refinery’s idled crude oil processing units and related infrastructure (refining assets) and supplies inventories that supported the refining operations. In addition, we terminated the employees who supported the refining operations and incurred severance costs at that time. Even though we suspended refining operations in 2012, we continued to maintain the refining assets to allow them to be restarted and did not abandon them until our recent decision to no longer pursue options to restart refining operations.
	The Aruba Refinery resides on land leased from the Government of Aruba (GOA) and our agreements with the GOA require us to dismantle our leasehold improvements under certain conditions. Because of our May 2014 decision to abandon the refining assets, we believe the GOA will require us to dismantle those assets. As a result, we recognized an asset retirement obligation of $59 million, which was charged to expense during the three months ended June 30, 2014, and is reflected in discontinued operations. We had not recognized an asset retirement obligation previously due to our belief that we would not be required to dismantle the assets as long as we intended to operate them. In the second quarter of 2014, we also recognized liabilities of $4 million relating to obligations under certain contracts, including a liability for the remaining lease payments for the land on which the refining assets reside.
	Of the $63 million of liabilities recorded in connection with our decision to abandon the Aruba Refinery, $30 million is classified as a current liability and is reflected in accrued expenses, and $33 million is classified as a long-term liability and is reflected in other long-term liabilities as of June 30, 2014. Our agreements with the GOA require us to complete the dismantlement activities within 3 years.
	Selected results of operations of the Aruba Refinery are shown below (in millions).
		Three Months Ended					Six Months Ended
		June 30,					June 30,
		2014			2013		2014			2013
	Operating revenues	$	—		$	—	$	—		$	—
	Income (loss) before income taxes	(63		)	3		(64		)	6
	There was no tax benefit recognized for the loss from discontinued operations for the the three and six months ended June 30, 2014 as we do not expect to realize this tax benefit.

Separation_of_Retail_Business

Separation of Retail Business	6 Months Ended
	Jun. 30, 2014
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]	'
SEPARATION OF RETAIL BUSINESS	'
	4	SEPARATION OF RETAIL BUSINESS
	On May 1, 2013, we completed the separation of our retail business by creating an independent public company named CST Brands, Inc. (CST) and distributing 80 percent of the outstanding shares of CST common stock to our stockholders. Each Valero stockholder received one share of CST common stock for every nine shares of Valero common stock held at the close of business on the record date of April 19, 2013.
	In connection with the separation, we received an aggregate of $1.05 billion in cash, consisting of $550 million from the issuance of short-term debt to a third-party financial institution on April 16, 2013 and $500 million distributed to us by CST on May 1, 2013. The cash distributed to us by CST was borrowed by CST on May 1, 2013 under its senior secured credit facility. Also on May 1, 2013, CST issued $550 million of its senior unsecured bonds to us, and we exchanged those bonds with the third-party financial institution in satisfaction of our short-term debt. Immediately prior to May 1, 2013, subsidiaries of CST held $315 million of cash, and CST retained that cash following the distribution on May 1, 2013. We also incurred $30 million in costs during the three months ended June 30, 2013 to effect the separation, which were included in general and administrative expenses.
	We also entered into long-term motor fuel supply agreements with CST in the U.S. and Canada. The nature and significance of our agreements to supply motor fuel to CST through 2028 represents a continuation of activities with CST for accounting purposes. As such, the historical results of operations of our retail business have not been reported as discontinued operations in our statements of income.
	In November 2013, we disposed of our 20 percent retained interest in CST.
	Selected historical results of operations of our retail business prior to the separation are disclosed in Note 11. Subsequent to May 1, 2013 and through June 30, 2013, our share of CST’s results of operations was reflected in “other income, net.” Our share of income taxes incurred directly by CST during this period was reported in the equity in earnings from CST, and as such is not included in income taxes in our statements of income.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2014
Inventory Disclosure [Abstract]	'
INVENTORIES	'
	5	INVENTORIES
	Inventories consisted of the following (in millions):
		June 30,		December 31,
		2014		2013
	Refinery feedstocks	$	3,380	$	2,135
	Refined products and blendstocks	2,732		3,231
	Ethanol feedstocks and products	182		166
	Materials and supplies	232		226
	Inventories	$	6,526	$	5,758
	As of June 30, 2014 and December 31, 2013, the replacement cost (market value) of last in, first out (LIFO) inventories exceeded their LIFO carrying amounts by approximately $7.2 billion and $6.9 billion, respectively. As of June 30, 2014 and December 31, 2013, our non-LIFO inventories accounted for $914 million and $851 million, respectively, of our total inventories.

Debt

Debt	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
DEBT	'
	6	DEBT
	Credit Facilities
	Revolver
	We have a $3 billion revolving credit facility (the Revolver) that has a maturity date of November 2018. We have the option to increase the aggregate commitments under the Revolver to $4.5 billion, subject to, among other things, the consent of the existing lenders whose commitments will be increased or any additional lenders providing such additional capacity. The Revolver has certain restrictive covenants, including a maximum debt-to-capitalization ratio of 60 percent. As of June 30, 2014 and December 31, 2013, our debt-to-capitalization ratios, calculated in accordance with the terms of the Revolver, were 14 percent and 12 percent, respectively. We believe that we will remain in compliance with this covenant.
	VLP Revolver
	VLP has a $300 million senior unsecured revolving credit facility agreement (the VLP Revolver) that has a maturity date of December 2018. The VLP Revolver is available only to the operations of VLP, and creditors of VLP do not have recourse against Valero.
	Canadian Facility
	In addition to the Revolver and the VLP Revolver, one of our Canadian subsidiaries has a C$50 million committed revolving credit facility under which it may borrow and obtain letters of credit that has a maturity date of November 2014.
	Activities Under Our Credit Facilities
	During the six months ended June 30, 2014 and 2013, we had no borrowings or repayments under the Revolver, the VLP Revolver, or our Canadian revolving credit facility. As of June 30, 2014 and December 31, 2013, we had no borrowings outstanding under these credit facilities.
	We had outstanding letters of credit under our committed lines of credit as follows (in millions):
					Amounts Outstanding
		Borrowing		Expiration	June 30,		December 31,
		Capacity			2014		2013
	Letter of credit facilities	$	550	Jun-15	$	—	$	278
	Revolver	$	3,000	Nov-18	$	59	$	59
	VLP Revolver	$	300	Dec-18	$	—	$	—
	Canadian revolving credit facility	C$	50	Nov-14	C$	10	C$	10
	As of June 30, 2014 and December 31, 2013, we had $206 million and $189 million, respectively, of letters of credit outstanding under our uncommitted short-term bank credit facilities.
	Non-Bank Debt
	During the six months ended June 30, 2014, we made a scheduled debt repayment of $200 million related to our 4.75% senior notes. During the six months ended June 30, 2013, we made scheduled debt repayments of $300 million related to our 4.75% senior notes and $180 million related to our 6.7% senior notes.
	Accounts Receivable Sales Facility
	We have an accounts receivable sales facility with a group of third-party entities and financial institutions to sell up to $1.5 billion of eligible trade receivables on a revolving basis. In July 2014, we amended this facility to extend the maturity date to July 2015. Proceeds from the sale of receivables under this facility are reflected as debt. Under this program, one of our marketing subsidiaries (Valero Marketing) sells eligible receivables, without recourse, to another of our subsidiaries (Valero Capital), whereupon the receivables are no longer owned by Valero Marketing. Valero Capital, in turn, sells an undivided percentage ownership interest in the eligible receivables, without recourse, to the third-party entities and financial institutions. To the extent that Valero Capital retains an ownership interest in the receivables it has purchased from Valero Marketing, such interest is included in our financial statements solely as a result of the consolidation of the financial statements of Valero Capital with those of Valero Energy Corporation; the receivables are not available to satisfy the claims of the creditors of Valero Marketing or Valero Energy Corporation.
	During the six months ended June 30, 2014 and 2013, we had no proceeds from or repayments under our accounts receivable sales facility. As of June 30, 2014 and December 31, 2013, we had $100 million outstanding under our accounts receivable sales facility.
	Capitalized Interest
	Capitalized interest was $18 million and $45 million for the three months ended June 30, 2014 and 2013, respectively, and $35 million and $85 million for the six months ended June 30, 2014 and 2013, respectively.

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
COMMITMENTS AND CONTINGENCIES	'
	7	COMMITMENTS AND CONTINGENCIES
	Environmental Matter
	We are involved, together with several other companies, in an environmental cleanup in the Village of Hartford, Illinois (the Village) and the adjacent shutdown refinery site, which we acquired as part of a prior acquisition. In cooperation with some of the other companies, we have been conducting initial mitigation and cleanup response pursuant to an administrative order issued by the U.S. Environmental Protection Agency (EPA). The U.S. EPA is seeking further cleanup obligations from us and other potentially responsible parties for the Village. In parallel with the Village cleanup, we are also in litigation with the State of Illinois EPA and other potentially responsible parties relating to the remediation of the shutdown refinery site. In each of these matters, we have various defenses and rights for contribution from the other responsible parties. We have accrued for our own expected contribution obligations. However, because of the unpredictable nature of these cleanups and the methodology for allocation of liabilities, it is reasonably possible that we could incur a loss in a range of $0 to $200 million in excess of the amount of our accrual to ultimately resolve these matters. Factors underlying this estimated range are expected to change from time to time, and actual results may vary significantly from this estimate.
	Litigation Matters
	We are party to claims and legal proceedings arising in the ordinary course of business. We have not recorded a loss contingency liability with respect to some of these matters because we have determined that it is remote that a loss has been incurred. For other matters, we have recorded a loss contingency liability where we have determined that it is probable that a loss has been incurred and that the loss is reasonably estimable. These loss contingency liabilities are not material to our financial position. We re-evaluate and update our loss contingency liabilities as matters progress over time, and we believe that any changes to the recorded liabilities will not be material to our financial position, results of operations, or liquidity.

Equity

Equity	6 Months Ended
	Jun. 30, 2014
Equity [Abstract]	'
EQUITY	'
	8	EQUITY
	Reconciliation of Balances
	The following is a reconciliation of the beginning and ending balances of equity attributable to our stockholders, equity attributable to the noncontrolling interests, and total equity (in millions):
		Six Months Ended June 30,
		2014										2013
		Valero				Non-			Total			Valero			Non-			Total
		Stockholders’				controlling			Equity			Stockholders’			controlling			Equity
		Equity				Interests						Equity			Interests
	Balance as of	$	19,460			$	486		$	19,946		$	18,032		$	63		$	18,095
	beginning of period
	Net income (loss)	1,416				13			1,429			1,120			(3		)	1,117
	Dividends	(266		)		—			(266		)	(220		)	—			(220		)
	Stock-based	21				—			21			25			—			25
	compensation expense
	Tax deduction in excess	31				—			31			27			—			27
	of stock-based
	compensation expense
	Transactions
	in connection with
	stock-based
	compensation plans:
	Stock issuances	32				—			32			43			—			43
	Stock repurchases	(76		)		—			(76		)	(196		)	—			(196		)
	Stock repurchases under	(483		)		—			(483		)	(364		)	—			(364		)
	buyback program
	Separation of retail business	—				—			—			(499		)	—			(499		)
	Contributions from	—				14			14			—			45			45
	noncontrolling interests
	Distributions to public	—				(4		)	(4		)	—			—			—
	unitholders of
	Valero Energy Partners LP
	Other comprehensive	76				—			76			(48		)	—			(48		)
	income (loss)
	Balance as of end of period	$	20,211			$	509		$	20,720		$	17,920		$	105		$	18,025
	The noncontrolling interests relate to third-party ownership interests in VLP and joint venture companies whose financial statements we consolidate due to our controlling interests.
	Share Activity
	Activity in the number of shares of common stock and treasury stock was as follows (in millions):
		Six Months Ended June 30,
		2014						2013
		Common			Treasury			Common		Treasury
		Stock			Stock			Stock		Stock
	Balance as of beginning of period	673			(138	)		673		(121	)
	Transactions in connection with
	stock-based compensation plans:
	Stock issuances	—			2			—		3
	Stock repurchases	—			(1	)		—		(5	)
	Stock repurchases under buyback program	—			(7	)		—		(8	)
	Balance as of end of period	673			(144	)		673		(131	)
	Common Stock Dividends
	On July 29, 2014, our board of directors declared a quarterly cash dividend of $0.275 per common share payable on September 17, 2014 to holders of record at the close of business on August 20, 2014.
	Income Tax Effects related to Components of Other Comprehensive Income
	The tax effects allocated to each component of other comprehensive income (loss) were as follows (in millions):
		Three Months Ended June 30,
		2014										2013
		Before-Tax Amount				Tax Expense (Benefit)			Net Amount			Before-Tax Amount			Tax Expense (Benefit)			Net Amount
	Foreign currency translation adjustment	$	150			$	—		$	150		$	(64	)	$	—		$	(64	)
	Pension and other postretirement benefits:
	Amounts reclassified into income related to:
	Net actuarial loss	9				3			6			15			5			10
	Prior service credit	(9		)		(5		)	(4		)	(9		)	(4		)	(5		)
	Net gain on pension and other	—				(2		)	2			6			1			5
	postretirement benefits
	Derivative instruments designated and
qualifying as cash flow hedges:
Net loss arising during the period	(3		)		—			(3		)	(10		)	(3		)	(7		)
Net loss reclassified into income	—				—			—			8			3			5
Net loss on cash flow hedges	(3		)		—			(3		)	(2		)	—			(2		)
Other comprehensive income (loss)	$	147			$	(2	)	$	149		$	(60	)	$	1		$	(61	)
	Six Months Ended June 30,
	2014										2013
	Before-Tax Amount				Tax Expense (Benefit)			Net Amount			Before-Tax Amount			Tax Expense (Benefit)			Net Amount
Foreign currency translation adjustment	$	76			$	—		$	76		$	(268	)	$	—		$	(268	)
Pension and other postretirement benefits:
Gain arising during the period related to	—				—			—			328			115			213
plan amendments
Amounts reclassified into income related to:
Net actuarial loss	17				6			11			29			10			19
Prior service credit	(19		)		(8		)	(11		)	(15		)	(6		)	(9		)
Net gain (loss) on pension and other	(2		)		(2		)	—			342			119			223
postretirement benefits
Derivative instruments designated and
qualifying as cash flow hedges:
Net gain (loss) arising during the period	4				2			2			(9		)	(3		)	(6		)
Net (gain) loss reclassified into income	(3		)		(1		)	(2		)	5			2			3
Net gain (loss) on cash flow hedges	1				1			—			(4		)	(1		)	(3		)
Other comprehensive income (loss)	$	75			$	(1	)	$	76		$	70		$	118		$	(48	)
Accumulated Other Comprehensive Income
Changes in accumulated other comprehensive income by component, net of tax, were as follows (in millions):
	Foreign				Defined			Gains and			Total
	Currency				Benefit			(Losses) on
	Translation				Plans			Cash Flow
	Adjustment				Items			Hedges
Balance as of December 31, 2013	$	408			$	(58	)	$	—		$	350
Other comprehensive income	76				—			2			78
before reclassifications
Amounts reclassified from	—				—			(2		)	(2		)
accumulated other comprehensive
income (loss)
Net other comprehensive income	76				—			—			76
Balance as of June 30, 2014	$	484			$	(58	)	$	—		$	426
	Foreign				Defined			Gains and			Total
	Currency				Benefit			(Losses) on
	Translation				Plans			Cash Flow
	Adjustment				Items			Hedges
Balance as of December 31, 2012	$	665			$	(558	)	$	1		$	108
Other comprehensive income (loss)	(268		)		213			(6		)	(61		)
before reclassifications
Amounts reclassified from	—				10			3			13
accumulated other comprehensive
income (loss)
Net other comprehensive income (loss)	(268		)		223			(3		)	(48		)
Separation of retail business	(159		)		—			—			(159		)
Balance as of June 30, 2013	$	238			$	(335	)	$	(2	)	$	(99	)

Employee_Benefit_Plans

Employee Benefit Plans	6 Months Ended
	Jun. 30, 2014
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]	'
EMPLOYEE BENEFIT PLANS	'
	9	EMPLOYEE BENEFIT PLANS
	The components of net periodic benefit cost related to our defined benefit plans were as follows (in millions) :
		Pension Plans						Other Postretirement
								Benefit Plans
		2014			2013			2014			2013
	Three months ended June 30:
	Service cost	$	30		$	35		$	1		$	3
	Interest cost	23			22			4			5
	Expected return on plan assets	(33		)	(34		)	—			—
	Amortization of:
	Prior service credit	(5		)	(6		)	(4		)	(3		)
	Net actuarial loss	9			15			—			—
	Net periodic benefit cost	$	24		$	32		$	1		$	5
	Six months ended June 30:
	Service cost	$	60		$	71		$	3		$	6
	Interest cost	46			44			8			9
	Expected return on plan assets	(66		)	(66		)	—			—
	Amortization of:
	Prior service credit	(10		)	(9		)	(9		)	(6		)
	Net actuarial loss	17			29			—			—
	Net periodic benefit cost	$	47		$	69		$	2		$	9
	In February 2013, we announced changes to certain of our U.S. qualified pension plans that cover the majority of our U.S. employees who work in our refining segment and corporate operations. Benefits under our primary pension plan changed from a final average pay formula to a cash balance formula with staged effective dates that commence either on July 1, 2013 or January 1, 2015 depending on the age and service of the affected employees. All final average pay benefits will be frozen as of December 31, 2014, with all future benefits to be earned under the new cash balance formula. These plan amendments resulted in a $328 million decrease to pension liabilities and a related increase to other comprehensive income during the six months ended June 30, 2013. The benefit of this remeasurement will be amortized into income through 2025.
	Our anticipated contributions to our pension and other postretirement benefit plans during 2014 have not changed from amounts previously disclosed in our financial statements for the year ended December 31, 2013. We contributed $22 million and $22 million, respectively, to our pension plans and $9 million and $8 million, respectively, to our other postretirement benefit plans during the six months ended June 30, 2014 and 2013.

Earnings_Per_Common_Share

Earnings Per Common Share	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
EARNINGS PER COMMON SHARE	'
	10	EARNINGS PER COMMON SHARE
	Earnings per common share were computed as follows (dollars and shares in millions, except per share amounts):
		Three Months Ended June 30,
		2014						2013
		Restricted			Common			Restricted		Common
		Stock			Stock			Stock		Stock
	Earnings per common share from
	continuing operations:
	Net income attributable to Valero stockholders				$	651				$	463
	from continuing operations
	Less dividends paid:
	Common stock				133					109
	Undistributed earnings				$	518				$	354
	Weighted-average common shares outstanding	2			529			3		543
	Earnings per common share from
	continuing operations:
	Distributed earnings	$	0.25		$	0.25		$	0.2	$	0.2
	Undistributed earnings	0.98			0.98			0.65		0.65
	Total earnings per common share from	$	1.23		$	1.23		$	0.85	$	0.85
	continuing operations
	Earnings per common share from
	continuing operations – assuming dilution:
	Net income attributable to Valero stockholders				$	651				$	463
	from continuing operations
	Weighted-average common shares outstanding				529					543
	Common equivalent shares:
	Stock options				3					3
	Performance awards and				2					2
	nonvested restricted stock
	Weighted-average common shares outstanding –				534					548
	assuming dilution
	Earnings per common share from				$	1.22				$	0.84
	continuing operations – assuming dilution
		Six Months Ended June 30,
		2014						2013
		Restricted			Common			Restricted		Common
		Stock			Stock			Stock		Stock
	Earnings per common share from
	continuing operations:
	Net income attributable to Valero stockholders				$	1,480				$	1,114
	from continuing operations
	Less dividends paid:
	Common stock				265					219
	Nonvested restricted stock				1					1
	Undistributed earnings				$	1,214				$	894
	Weighted-average common shares outstanding	2			530			3		546
	Earnings per common share from
	continuing operations:
	Distributed earnings	$	0.5		$	0.5		$	0.4	$	0.4
	Undistributed earnings	2.28			2.28			1.63		1.63
	Total earnings per common share from	$	2.78		$	2.78		$	2.03	$	2.03
	continuing operations
	Earnings per common share from
	continuing operations – assuming dilution:
	Net income attributable to Valero stockholders				$	1,480				$	1,114
	from continuing operations
	Weighted-average common shares outstanding				530					546
	Common equivalent shares:
	Stock options				3					4
	Performance awards and				2					2
	nonvested restricted stock
	Weighted-average common shares outstanding –				535					552
	assuming dilution
Earnings per common share from				$	2.77				$	2.02
continuing operations – assuming dilution
The following table reflects potentially dilutive securities (in millions) that were excluded from the calculation of “earnings per common share from continuing operations – assuming dilution” as the effect of including such securities would have been antidilutive. Stock options were excluded from weighted-average common shares outstanding – assuming dilution because the exercise price of the stock option was greater than the average market price of our common shares during each reporting period.
	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2014		2013			2014		2013
Stock options	1		3			1		3

Segment_Information

Segment Information	6 Months Ended
	Jun. 30, 2014
Segment Reporting [Abstract]	'
SEGMENT INFORMATION	'
	11	SEGMENT INFORMATION
	In May 2013, we completed the separation of our retail business, CST, and as a result, we no longer operate a retail business or report retail segment operating results. Segment activity related to our retail business prior to the separation is reflected in the retail segment results below. Motor fuel sales to CST, which were eliminated in consolidation prior to the separation, are reported as refining segment operating revenues from external customers after May 1, 2013.
	The following table reflects activity related to our reportable segments (in millions):
		Refining		Ethanol		Retail		Corporate			Total
	Three months ended June 30, 2014:
	Operating revenues from external	$	33,457	$	1,457	$	—	$	—		$	34,914
	customers
	Intersegment revenues	—		9		—		—			9
	Operating income (loss)	1,079		187		—		(181		)	1,085
	Three months ended June 30, 2013:
	Operating revenues from external	31,564		1,491		979		—			34,034
	customers
	Intersegment revenues	671		15		—		—			686
	Operating income (loss)	918		95		39		(247		)	805
	Six months ended June 30, 2014:
	Operating revenues from external	65,909		2,668		—		—			68,577
	customers
	Intersegment revenues	—		34		—		—			34
	Operating income (loss)	2,359		430		—		(353		)	2,436
	Six months ended June 30, 2013:
	Operating revenues from external	61,117		2,495		3,896		—			67,508
	customers
	Intersegment revenues	2,876		70		—		—			2,946
	Operating income (loss)	2,127		109		81		(454		)	1,863
	Total assets by reportable segment were as follows (in millions):
		June 30,		December 31,
		2014		2013
	Refining	$	41,326	$	40,834
	Ethanol	937		889
	Corporate	4,750		5,537
	Total assets	$	47,013	$	47,260
	In March 2014, we purchased an idled corn ethanol plant in Mount Vernon, Indiana for $34 million from a wholly owned subsidiary of Aventine Renewable Energy Holdings, Inc. We expect to resume production during the third quarter of 2014. We will finalize our purchase accounting once a determination of the fair values of the assets acquired and liabilities assumed is available, pending the completion of independent appraisals and other evaluations.

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information	6 Months Ended
	Jun. 30, 2014
Supplemental Cash Flow Information [Abstract]	'
SUPPLEMENTAL CASH FLOW INFORMATION	'
	12	SUPPLEMENTAL CASH FLOW INFORMATION
	In order to determine net cash provided by operating activities, net income is adjusted by, among other things, changes in current assets and current liabilities as follows (in millions):
		Six Months Ended
		June 30,
		2014			2013
	Decrease (increase) in current assets:
	Receivables, net	$	837		$	412
	Inventories	(721		)	(824		)
	Income taxes receivable	(16		)	31
	Prepaid expenses and other	11			2
	Increase (decrease) in current liabilities:
	Accounts payable	(707		)	625
	Accrued expenses	12			(44		)
	Taxes other than income taxes	(71		)	268
	Income taxes payable	(369		)	(26		)
	Changes in current assets and current liabilities	$	(1,024	)	$	444
	The above changes in current assets and current liabilities differ from changes between amounts reflected in the applicable balance sheets for the respective periods for the following reasons:
	•	the amounts shown above exclude changes in cash and temporary cash investments, deferred income taxes, and current portion of debt and capital lease obligations, as well as the effect of certain noncash investing and financing activities discussed below;
	•	the amounts shown above for the six months ended June 30, 2013 exclude the change in current assets and current liabilities resulting from the separation of our retail business as described in Note 4;
	•	amounts accrued for capital expenditures and deferred turnaround and catalyst costs are reflected in investing activities when such amounts are paid;
	•	amounts accrued for common stock purchases in the open market that are not settled as of the balance sheet date are reflected in financing activities when the purchases are settled and paid; and
	•	certain differences between balance sheet changes and the changes reflected above result from translating foreign currency denominated balances at the applicable exchange rates as of each balance sheet date.
	There were no significant noncash investing activities for the six months ended June 30, 2014 and 2013. Noncash financing activities for the six months ended June 30, 2014 included an accrual of $104 million for the purchase of 2,000,000 shares of our common stock, which was settled in early July 2014. Noncash financing activities for the six months ended June 30, 2013 included the exchange of CST’s senior unsecured bonds with the third-party financial institution in satisfaction of our short-term debt as described in Note 4.
	Cash flows related to interest and income taxes were as follows (in millions):
		Six Months Ended
		June 30,
		2014			2013
	Interest paid in excess of amount capitalized	$	197		$	160
	Income taxes paid, net	1,054			243
	Cash flows related to the discontinued operations of the Aruba Refinery were immaterial for the six months ended June 30, 2014 and 2013.

Fair_Value_Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
FAIR VALUE MEASUREMENTS	'
	13	FAIR VALUE MEASUREMENTS
	General
	U.S. GAAP requires or permits certain assets and liabilities to be measured at fair value on a recurring or nonrecurring basis in our balance sheets, and those assets and liabilities are presented below under “Recurring Fair Value Measurements” and “Nonrecurring Fair Value Measurements.” Assets and liabilities measured at fair value on a recurring basis, such as derivative financial instruments, are measured at fair value at the end of each reporting period. Assets and liabilities measured at fair value on a nonrecurring basis, such as the impairment of property, plant and equipment, are measured at fair value in particular circumstances.
	U.S. GAAP also requires the disclosure of the fair values of financial instruments when an option to elect fair value accounting has been provided, but such election has not been made. A debt obligation is an example of such a financial instrument. The disclosure of the fair values of financial instruments not recognized at fair value in our balance sheet is presented below under “Other Financial Instruments.”
	U.S. GAAP provides a framework for measuring fair value and establishes a three-level fair value hierarchy that prioritizes inputs to valuation techniques based on the degree to which objective prices in external active markets are available to measure fair value. Following is a description of each of the levels of the fair value hierarchy.
	•	Level 1 - Observable inputs, such as unadjusted quoted prices in active markets for identical assets or liabilities.
	•	Level 2 - Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active.
	•	Level 3 - Unobservable inputs for the asset or liability. Unobservable inputs reflect our own assumptions about what market participants would use to price the asset or liability. The inputs are developed based on the best information available in the circumstances, which might include occasional market quotes or sales of similar instruments or our own financial data such as internally developed pricing models, discounted cash flow methodologies, as well as instruments for which the fair value determination requires significant judgment.
	Recurring Fair Value Measurements
	The tables below present information (in millions) about our assets and liabilities recognized at their fair values in our balance sheets categorized according to the fair value hierarchy of the inputs utilized by us to determine the fair values as of June 30, 2014 and December 31, 2013.
	We have elected to offset the fair value amounts recognized for multiple similar derivative contracts executed with the same counterparty, including any related cash collateral assets or obligations as shown below; however, fair value amounts by hierarchy level are presented on a gross basis in the tables below. We have no derivative contracts that are subject to master netting arrangements that are reflected gross on the balance sheet.
		30-Jun-14
								Total		Effect of			Effect of			Net		Cash
								Gross		Counter-			Cash			Carrying		Collateral
								Fair		party			Collateral			Value on		Paid or
		Fair Value Hierarchy						Value		Netting			Netting			Balance		Received
		Level 1		Level 2		Level 3										Sheet		Not Offset
	Assets:
	Commodity derivative	$	1,182	$	28	$	—	$	1,210	$	(1,182	)	$	(5	)	$	23	$	—
	contracts
	Investments of certain	100		—		11		111		n/a			n/a			111		n/a
	benefit plans
	Total	$	1,282	$	28	$	11	$	1,321	$	(1,182	)	$	(5	)	$	134
	Liabilities:
	Commodity derivative	$	1,260	$	32	$	—	$	1,292	$	(1,182	)	$	(109	)	$	1	$	(159	)
	contracts
	Biofuels blending	—		77		—		77		n/a			n/a			77		n/a
	obligation
	Physical purchase	—		11		—		11		n/a			n/a			11		n/a
	contracts
	Foreign currency	13		—		—		13		n/a			n/a			13		n/a
	contracts
	Total	$	1,273	$	120	$	—	$	1,393	$	(1,182	)	$	(109	)	$	102
		31-Dec-13
								Total		Effect of			Effect of			Net		Cash
								Gross		Counter-			Cash			Carrying		Collateral
								Fair		party			Collateral			Value on		Paid or
		Fair Value Hierarchy						Value		Netting			Netting			Balance		Received
		Level 1		Level 2		Level 3										Sheet		Not Offset
	Assets:
	Commodity derivative	$	499	$	38	$	—	$	537	$	(505	)	$	(7	)	$	25	$	—
	contracts
	Investments of certain benefit plans	98		—		11		109		n/a			n/a			109		n/a
	Total	$	597	$	38	$	11	$	646	$	(505	)	$	(7	)	$	134
	Liabilities:
	Commodity derivative	$	492	$	24	$	—	$	516	$	(505	)	$	(6	)	$	5	$	(76	)
	contracts
	Biofuels blending obligation	—		11		—		11		n/a			n/a			11		n/a
	Physical purchase contracts	—		5		—		5		n/a			n/a			5		n/a
	Foreign currency	8		—		—		8		n/a			n/a			8		n/a
	contracts
	Total	$	500	$	40	$	—	$	540	$	(505	)	$	(6	)	$	29
	A description of our assets and liabilities recognized at fair value along with the valuation methods and inputs we used to develop their fair value measurements are as follows:
	•	Commodity derivative contracts consist primarily of exchange-traded futures and swaps, and as disclosed in Note 14, some of these contracts are designated as hedging instruments. These contracts are measured at fair value using the market approach. Exchange-traded futures are valued based on quoted prices from the exchange and are categorized in Level 1 of the fair value hierarchy. Swaps are priced using third-party broker quotes, industry pricing services, and exchange-traded curves, with appropriate consideration of counterparty credit risk, but because they have contractual terms that are not identical to exchange-traded futures instruments with a comparable market price, these financial instruments are categorized in Level 2 of the fair value hierarchy.
	•	Physical purchase contracts represent the fair value of firm commitments to purchase crude oil feedstocks and the fair value of fixed-price corn purchase contracts, and as disclosed in Note 14, some of these contracts are designated as hedging instruments. The fair values of these firm commitments and purchase contracts are measured using a market approach based on quoted prices from the commodity exchange or an independent pricing service and are categorized in Level 2 of the fair value hierarchy.
	•	Investments of certain benefit plans consist of investment securities held by trusts for the purpose of satisfying a portion of our obligations under certain U.S. nonqualified benefit plans. The assets categorized in Level 1 of the fair value hierarchy are measured at fair value using a market approach based on quoted prices from national securities exchanges. The assets categorized in Level 3 of the fair value hierarchy represent insurance contracts, the fair value of which is provided by the insurer.
	•	Foreign currency contracts consist of foreign currency exchange and purchase contracts entered into by our international operations to manage our exposure to exchange rate fluctuations on transactions denominated in currencies other than the local (functional) currencies of those operations. These contracts are valued based on quoted prices from the exchange and are categorized in Level 1 of the fair value hierarchy.
	•	Our biofuels blending obligation represents a liability for the purchase of biofuel credits (primarily Renewable Identification Numbers (RINs) in the U.S.) needed to satisfy our obligation to blend biofuels into the products we produce. To the degree we are unable to blend at percentages required under various governmental and regulatory programs, we must purchase biofuel credits to comply with these programs. These programs are further described in Note 14 under “Compliance Program Price Risk.” This liability is based on our deficit in biofuel credits as of the balance sheet date, if any, after considering any biofuel credits acquired or under contract, and is equal to the product of the biofuel credits deficit and the market price of these credits as of the balance sheet date. This liability is categorized in Level 2 of the fair value hierarchy and is measured at fair value using the market approach based on quoted prices from an independent pricing service.
	There were no transfers between Level 1 and Level 2 for assets and liabilities held as of June 30, 2014 and December 31, 2013 that were measured at fair value on a recurring basis.
	There was no activity during the three and six months ended June 30, 2014 and 2013 related to the fair value amounts categorized in Level 3 as of June 30, 2014 and December 31, 2013.
	Nonrecurring Fair Value Measurements
	There were no assets or liabilities that were measured at fair value on a nonrecurring basis as of June 30, 2014 and December 31, 2013.
	Other Financial Instruments
Financial instruments that we recognize in our balance sheets at their carrying amounts are shown in the table below (in millions):
	June 30, 2014				December 31, 2013
	Carrying		Fair		Carrying		Fair
	Amount		Value		Amount		Value
Financial assets:
Cash and temporary cash investments	$	3,480	$	3,480	$	4,292	$	4,292
Financial liabilities:
Debt (excluding capital leases)	6,348		7,862		6,525		7,659
The methods and significant assumptions used to estimate the fair value of these financial instruments are as follows:
•	The fair value of cash and temporary cash investments approximates the carrying value due to the low level of credit risk of these assets combined with their short maturities and market interest rates (Level 1).
•	The fair value of debt is determined primarily using the market approach based on quoted prices provided by third-party brokers and vendor pricing services (Level 2).

Price_Risk_Management_Activiti

Price Risk Management Activities	6 Months Ended
	Jun. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
PRICE RISK MANAGEMENT ACTIVITIES	'
	14	PRICE RISK MANAGEMENT ACTIVITIES
	We are exposed to market risks related to the volatility in the price of commodities, interest rates, and foreign currency exchange rates. We enter into derivative instruments to manage some of these risks, including derivative instruments related to the various commodities we purchase or produce, interest rate swaps, and foreign currency exchange and purchase contracts, as described below under “Risk Management Activities by Type of Risk.” These derivative instruments are recorded as either assets or liabilities measured at their fair values (see Note 13), as summarized below under “Fair Values of Derivative Instruments.” In addition, the effect of these derivative instruments on our income is summarized below under “Effect of Derivative Instruments on Income and Other Comprehensive Income.”
	When we enter into a derivative instrument, it is designated as a fair value hedge, a cash flow hedge, an economic hedge, or a trading derivative. The gain or loss on a derivative instrument designated and qualifying as a fair value hedge, as well as the offsetting loss or gain on the hedged item attributable to the hedged risk, is recognized currently in income in the same period. The effective portion of the gain or loss on a derivative instrument designated and qualifying as a cash flow hedge is initially reported as a component of other comprehensive income and is then recorded into income in the period or periods during which the hedged forecasted transaction affects income. The ineffective portion of the gain or loss on the cash flow derivative instrument, if any, is recognized in income as incurred. For our economic hedges (derivative instruments not designated as fair value or cash flow hedges) and for derivative instruments entered into by us for trading purposes, the derivative instrument is recorded at fair value and changes in the fair value of the derivative instrument are recognized currently in income. The cash flow effects of all of our derivative instruments are reflected in operating activities in our statements of cash flows for all periods presented.
	We are also exposed to market risk related to the volatility in the price of credits needed to comply with various governmental and regulatory programs. To manage this risk, we enter into contracts to purchase these credits when prices are deemed favorable. Some of these contracts are derivative instruments; however, we elect the normal purchase exception and do not record these contracts at their fair values.
	Risk Management Activities by Type of Risk
	Commodity Price Risk
	We are exposed to market risks related to the volatility in the price of crude oil, refined products (primarily gasoline and distillate), grain (primarily corn), soybean oil, and natural gas used in our operations. To reduce the impact of price volatility on our results of operations and cash flows, we use commodity derivative instruments, including futures, swaps, and options. We use the futures markets for the available liquidity, which provides greater flexibility in transacting our hedging and trading operations. We use swaps primarily to manage our price exposure. Our positions in commodity derivative instruments are monitored and managed on a daily basis by a risk control group to ensure compliance with our stated risk management policy that has been approved by our board of directors.
	For risk management purposes, we use fair value hedges, cash flow hedges, and economic hedges. In addition to the use of derivative instruments to manage commodity price risk, we also enter into certain commodity derivative instruments for trading purposes. Our objective for entering into each type of hedge or trading derivative is described below.
	•	Fair Value Hedges – Fair value hedges are used to hedge price volatility in certain refining inventories and firm commitments to purchase inventories. The level of activity for our fair value hedges is based on the level of our operating inventories, and generally represents the amount by which our inventories differ from our previous year-end LIFO inventory levels.
	As of June 30, 2014, we had no outstanding commodity derivative instruments that were entered into to hedge crude oil and refined product inventories and no commodity derivative instruments related to the physical purchase of crude oil and refined products at a fixed price.
	•	Cash Flow Hedges – Cash flow hedges are used to hedge price volatility in certain forecasted feedstock and refined product purchases, refined product sales, and natural gas purchases. The objective of our cash flow hedges is to lock in the price of forecasted feedstock, refined product, or natural gas purchases or refined product sales at existing market prices that we deem favorable.
	As of June 30, 2014, we had the following outstanding commodity derivative instruments that were entered into to hedge forecasted purchases of crude oil and sales of refined products. The information presents the notional volume of outstanding contracts by type of instrument and year of maturity (volumes in thousands of barrels).
			Notional
			Contract
			Volumes by
			Year of
			Maturity
	Derivative Instrument		2014
	Crude oil and refined products:
	Futures – long		6,006
	Futures – short		2,793
	Physical contracts – short		3,213
	•	Economic Hedges – Economic hedges represent commodity derivative instruments that are not designated as fair value or cash flow hedges and are used to manage price volatility in certain (i) refinery feedstock, refined product, animal fat feedstock, and corn inventories, (ii) forecasted refinery feedstock, refined product, and corn purchases, and refined product sales, and (iii) fixed-price corn purchase contracts. Our objective for entering into economic hedges is consistent with the objectives discussed above for fair value hedges and cash flow hedges. However, the economic hedges are not designated as a fair value hedge or a cash flow hedge for accounting purposes, usually due to the difficulty of establishing the required documentation at the date that the derivative instrument is entered into that would allow us to achieve “hedge deferral accounting.”
	As of June 30, 2014, we had the following outstanding commodity derivative instruments that were used as economic hedges, as well as commodity derivative instruments related to the physical purchase of corn at a fixed price. The information presents the notional volume of outstanding contracts by type of instrument and year of maturity (volumes in thousands of barrels, except those identified as corn contracts that are presented in thousands of bushels, and soybean oil contracts that are presented in thousands of pounds).
			Notional Contract Volumes by
			Year of Maturity
	Derivative Instrument		2014			2015
	Crude oil and refined products:
	Swaps – long		10,145			—
	Swaps – short		10,286			30
	Futures – long		89,761			39
	Futures – short		108,422			1
	Corn:
	Futures – long		20,770			5
	Futures – short		43,805			3,415
	Physical contracts – long		24,339			3,405
	Soybean oil:
	Futures – long		115,440			—
	Futures – short		212,520			—
	•	Trading Derivatives – Our objective for entering into commodity derivative instruments for trading purposes is to take advantage of existing market conditions related to future results of operations and cash flows.
	As of June 30, 2014, we had the following outstanding commodity derivative instruments that were entered into for trading purposes. The information presents the notional volume of outstanding contracts by type of instrument and year of maturity (volumes represent thousands of barrels, except those identified as natural gas contracts that are presented in billions of British thermal units).
			Notional Contract Volumes by
			Year of Maturity
	Derivative Instrument		2014			2015
	Crude oil and refined products:
	Swaps – long		10,650			120
	Swaps – short		10,650			120
	Futures – long		96,138			16,519
	Futures – short		95,818			16,194
	Options – long		700			—
	Options – short		1,150			—
	Natural gas:
	Futures – long		250			1,800
	Futures – short		750			—
	Options – long		500			—
	Interest Rate Risk
	Our primary market risk exposure for changes in interest rates relates to our debt obligations. We manage our exposure to changing interest rates through the use of a combination of fixed-rate and floating-rate debt. In addition, at times we have used interest rate swap agreements to manage our fixed to floating interest rate position by converting certain fixed-rate debt to floating-rate debt. We had no interest rate derivative instruments outstanding as of June 30, 2014 or December 31, 2013, or during the three and six months ended June 30, 2014 and 2013.
	Foreign Currency Risk
	We are exposed to exchange rate fluctuations on transactions entered into by our international operations that are denominated in currencies other than the local (functional) currencies of those operations. To manage our exposure to these exchange rate fluctuations, we use foreign currency exchange and purchase contracts. These contracts are not designated as hedging instruments for accounting purposes, and therefore they are classified as economic hedges. As of June 30, 2014, we had commitments to purchase $692 million of U.S. dollars. The majority of these commitments matured on or before July 31, 2014, resulting in an immaterial gain in the third quarter of 2014.
	Compliance Program Price Risk
	We are exposed to market risk related to the volatility in the price of credits needed to comply with various governmental and regulatory programs. The most significant programs impacting our operations are those that require us to blend biofuels into the products we produce, and we are subject to such programs in most of the countries in which we operate. These countries set annual quotas for the percentage of biofuels that must be blended into the motor fuels consumed in these countries. As a producer of motor fuels from petroleum, we are obligated to blend biofuels into the products we produce at a rate that is at least equal to the applicable quota. To the degree we are unable to blend at the applicable rate, we must purchase biofuel credits (primarily RINs in the U.S.). We are exposed to the volatility in the market price of these credits, and we manage that risk by purchasing biofuel credits when prices are deemed favorable. The cost of meeting our obligations under these compliance programs was $91 million and $137 million for the three months ended June 30, 2014 and 2013, respectively, and $183 million and $267 million for the six months ended June 30, 2014 and 2013, respectively. These amounts are reflected in cost of sales.
	Fair Values of Derivative Instruments
	The following tables provide information about the fair values of our derivative instruments as of June 30, 2014 and December 31, 2013 (in millions) and the line items in the balance sheets in which the fair values are reflected. See Note 13 for additional information related to the fair values of our derivative instruments.
As indicated in Note 13, we net fair value amounts recognized for multiple similar derivative contracts executed with the same counterparty under master netting arrangements, including cash collateral assets and obligations. The tables below, however, are presented on a gross asset and gross liability basis, which results in the reflection of certain assets in liability accounts and certain liabilities in asset accounts.
	Balance Sheet		June 30, 2014
	Location		Asset				Liability
			Derivatives				Derivatives
Derivatives designated as
hedging instruments
Commodity contracts:
Futures	Receivables, net		$	3			$	2
Derivatives not designated as
hedging instruments
Commodity contracts:
Futures	Receivables, net		$	1,179			$	1,258
Swaps	Receivables, net		26				29
Swaps	Accrued expenses		2				3
Physical purchase contracts	Inventories		—				11
Foreign currency contracts	Accrued expenses		—				13
Total			$	1,207			$	1,314
Total derivatives			$	1,210			$	1,316
	Balance Sheet		December 31, 2013
	Location		Asset				Liability
			Derivatives				Derivatives
Derivatives designated as
hedging instruments
Commodity contracts:
Futures	Receivables, net		$	25			$	36
Derivatives not designated as
hedging instruments
Commodity contracts:
Futures	Receivables, net		$	474			$	455
Swaps	Receivables, net		33				18
Swaps	Prepaid expenses and other		3				—
Swaps	Accrued expenses		—				5
Options	Receivables, net		2				2
Physical purchase contracts	Inventories		—				5
Foreign currency contracts	Accrued expenses		—				8
Total			$	512			$	493
Total derivatives			$	537			$	529
Market and Counterparty Risk
Our price risk management activities involve the receipt or payment of fixed price commitments into the future. These transactions give rise to market risk, which is the risk that future changes in market conditions may make an instrument less valuable. We closely monitor and manage our exposure to market risk on a daily basis in accordance with policies approved by our board of directors. Market risks are monitored by a risk control group to ensure compliance with our stated risk management policy. Concentrations of customers in the refining industry may impact our overall exposure to counterparty risk because these customers may be similarly affected by changes in economic or other conditions. In addition, financial services companies are the counterparties in certain of our price risk management activities, and such financial services companies may be adversely affected by periods of uncertainty and illiquidity in the credit and capital markets.
There were no material amounts due from counterparties in the refining or financial services industry as of June 30, 2014 or December 31, 2013. We do not require any collateral or other security to support derivative instruments into which we enter. We also do not have any derivative instruments that require us to maintain a minimum investment-grade credit rating.
Effect of Derivative Instruments on Income and Other Comprehensive Income
The following tables provide information about the gain or loss recognized in income and other comprehensive income on our derivative instruments and the line items in the financial statements in which such gains and losses are reflected (in millions).
Derivatives in Fair Value		Location of Gain (Loss)		Three Months Ended							Six Months Ended
Hedging Relationships		Recognized in Income		June 30,							June 30,
		on Derivatives		2014				2013			2014			2013
Commodity contracts:
Gain (loss) recognized in		Cost of sales		$	5			$	(20	)	$	(26	)	$	(21	)
income on derivatives
Gain (loss) recognized in		Cost of sales		(5		)		22			25			22
income on hedged item
Gain (loss) recognized in		Cost of sales		—				2			(1		)	1
income on derivatives
(ineffective portion)
For fair value hedges, no component of the derivative instruments’ gains or losses was excluded from the assessment of hedge effectiveness for the three and six months ended June 30, 2014 and 2013. There were no amounts recognized in income for hedged firm commitments that no longer qualified as fair value hedges during the three and six months ended June 30, 2014 and 2013.
Derivatives in Cash Flow		Location of Gain (Loss)		Three Months Ended							Six Months Ended
Hedging Relationships		Recognized in Income		June 30,							June 30,
		on Derivatives		2014				2013			2014			2013
Commodity contracts:
Gain (loss) recognized in				$	(3	)		$	(10	)	$	4		$	(9	)
OCI on derivatives
(effective portion)
Gain (loss) reclassified		Cost of sales		—				(8		)	3			(5		)
from accumulated OCI
into income
(effective portion)
Gain (loss) recognized in		Cost of sales		3				(2		)	(1		)	(3		)
income on derivatives
(ineffective portion)
For cash flow hedges, no component of the derivative instruments’ gains or losses was excluded from the assessment of hedge effectiveness for the three and six months ended June 30, 2014 and 2013. For the three and six months ended June 30, 2014, cash flow hedges primarily related to forward purchases of crude oil, with no cumulative after-tax gains or losses on cash flow hedges remaining in accumulated other comprehensive income. For the three and six months ended June 30, 2014 and 2013, there were no amounts reclassified from accumulated other comprehensive income into income as a result of the discontinuance of cash flow hedge accounting.
Derivatives Designated as		Location of Gain (Loss)		Three Months Ended							Six Months Ended
Economic Hedges		Recognized in		June 30,							June 30,
and Other		Income on Derivatives
Derivative Instruments				2014				2013			2014			2013
Commodity contracts		Cost of sales		$	(136	)		$	246		$	(132	)	$	281
Foreign currency contracts		Cost of sales		(32		)		11			(23		)	36
Total				$	(168	)		$	257		$	(155	)	$	317
Trading Derivatives		Location of Gain (Loss)		Three Months Ended							Six Months Ended
		Recognized in		June 30,							June 30,
		Income on Derivatives		2014				2013			2014			2013
Commodity contracts		Cost of sales		$	4			$	3		$	3		$	5
RINs fixed-price contracts		Cost of sales		—				(7		)	—			(20		)
Total				$	4			$	(4	)	$	3		$	(15	)

Basis_of_Presentation_and_Summ1

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	As used in this report, the terms “Valero,” “we,” “us,” or “our” may refer to Valero Energy Corporation, one or more of its consolidated subsidiaries, or all of them taken as a whole.
	These unaudited financial statements have been prepared in accordance with United States (U.S.) generally accepted accounting principles (GAAP) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities Exchange Act of 1934. Accordingly, they do not include all of the information and notes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation have been included. All such adjustments are of a normal recurring nature unless disclosed otherwise. Financial information for the three and six months ended June 30, 2014 and 2013 included in these Condensed Notes to Consolidated Financial Statements is derived from our unaudited financial statements. Operating results for the three and six months ended June 30, 2014 are not necessarily indicative of the results that may be expected for the year ending December 31, 2014.
	The balance sheet as of December 31, 2013 has been derived from our audited financial statements as of that date. For further information, refer to our financial statements and notes thereto included in our annual report on Form 10-K for the year ended December 31, 2013.
Reclassification	'
	Reclassification
	As discussed in Note 3, in May 2014, we abandoned the Aruba Refinery. As a result, the refinery’s results of operations have been presented as discontinued operations in the consolidated statements of income for all periods presented.
Use of Estimates	'
	Use of Estimates
	The preparation of financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. On an ongoing basis, we review our estimates based on currently available information. Changes in facts and circumstances may result in revised estimates.
Offsetting fair value amounts of commodity derivative contracts	'
	We have elected to offset the fair value amounts recognized for multiple similar derivative contracts executed with the same counterparty, including any related cash collateral assets or obligations as shown below; however, fair value amounts by hierarchy level are presented on a gross basis in the tables below. We have no derivative contracts that are subject to master netting arrangements that are reflected gross on the balance sheet.
Derivatives	'
	We are exposed to market risks related to the volatility in the price of commodities, interest rates, and foreign currency exchange rates. We enter into derivative instruments to manage some of these risks, including derivative instruments related to the various commodities we purchase or produce, interest rate swaps, and foreign currency exchange and purchase contracts, as described below under “Risk Management Activities by Type of Risk.” These derivative instruments are recorded as either assets or liabilities measured at their fair values (see Note 13), as summarized below under “Fair Values of Derivative Instruments.” In addition, the effect of these derivative instruments on our income is summarized below under “Effect of Derivative Instruments on Income and Other Comprehensive Income.”
	When we enter into a derivative instrument, it is designated as a fair value hedge, a cash flow hedge, an economic hedge, or a trading derivative. The gain or loss on a derivative instrument designated and qualifying as a fair value hedge, as well as the offsetting loss or gain on the hedged item attributable to the hedged risk, is recognized currently in income in the same period. The effective portion of the gain or loss on a derivative instrument designated and qualifying as a cash flow hedge is initially reported as a component of other comprehensive income and is then recorded into income in the period or periods during which the hedged forecasted transaction affects income. The ineffective portion of the gain or loss on the cash flow derivative instrument, if any, is recognized in income as incurred. For our economic hedges (derivative instruments not designated as fair value or cash flow hedges) and for derivative instruments entered into by us for trading purposes, the derivative instrument is recorded at fair value and changes in the fair value of the derivative instrument are recognized currently in income. The cash flow effects of all of our derivative instruments are reflected in operating activities in our statements of cash flows for all periods presented.
Derivative instruments collateral requirements	'
	We do not require any collateral or other security to support derivative instruments into which we enter.

Discontinued_Operations_Tables

Discontinued Operations (Tables)	6 Months Ended
	Jun. 30, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Selected results of operations of the Aruba Refinery	'
	Selected results of operations of the Aruba Refinery are shown below (in millions).
		Three Months Ended					Six Months Ended
		June 30,					June 30,
		2014			2013		2014			2013
	Operating revenues	$	—		$	—	$	—		$	—
	Income (loss) before income taxes	(63		)	3		(64		)	6

Inventories_Tables

Inventories (Tables)	6 Months Ended
	Jun. 30, 2014
Inventory Disclosure [Abstract]	'
Schedule of inventories	'
	Inventories consisted of the following (in millions):
		June 30,		December 31,
		2014		2013
	Refinery feedstocks	$	3,380	$	2,135
	Refined products and blendstocks	2,732		3,231
	Ethanol feedstocks and products	182		166
	Materials and supplies	232		226
	Inventories	$	6,526	$	5,758

Debt_Tables

Debt (Tables)	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Outstanding letters of credit under committed lines of credit	'
	We had outstanding letters of credit under our committed lines of credit as follows (in millions):
					Amounts Outstanding
		Borrowing		Expiration	June 30,		December 31,
		Capacity			2014		2013
	Letter of credit facilities	$	550	Jun-15	$	—	$	278
	Revolver	$	3,000	Nov-18	$	59	$	59
	VLP Revolver	$	300	Dec-18	$	—	$	—
	Canadian revolving credit facility	C$	50	Nov-14	C$	10	C$	10

Equity_Tables

Equity (Tables)	6 Months Ended
	Jun. 30, 2014
Equity [Abstract]	'
Schedule of changes in equity	'
	The following is a reconciliation of the beginning and ending balances of equity attributable to our stockholders, equity attributable to the noncontrolling interests, and total equity (in millions):
		Six Months Ended June 30,
		2014										2013
		Valero				Non-			Total			Valero			Non-			Total
		Stockholders’				controlling			Equity			Stockholders’			controlling			Equity
		Equity				Interests						Equity			Interests
	Balance as of	$	19,460			$	486		$	19,946		$	18,032		$	63		$	18,095
	beginning of period
	Net income (loss)	1,416				13			1,429			1,120			(3		)	1,117
	Dividends	(266		)		—			(266		)	(220		)	—			(220		)
	Stock-based	21				—			21			25			—			25
	compensation expense
	Tax deduction in excess	31				—			31			27			—			27
	of stock-based
	compensation expense
	Transactions
	in connection with
	stock-based
	compensation plans:
	Stock issuances	32				—			32			43			—			43
	Stock repurchases	(76		)		—			(76		)	(196		)	—			(196		)
	Stock repurchases under	(483		)		—			(483		)	(364		)	—			(364		)
	buyback program
	Separation of retail business	—				—			—			(499		)	—			(499		)
	Contributions from	—				14			14			—			45			45
	noncontrolling interests
	Distributions to public	—				(4		)	(4		)	—			—			—
	unitholders of
	Valero Energy Partners LP
	Other comprehensive	76				—			76			(48		)	—			(48		)
	income (loss)
	Balance as of end of period	$	20,211			$	509		$	20,720		$	17,920		$	105		$	18,025
Schedule of stock by class	'
	Activity in the number of shares of common stock and treasury stock was as follows (in millions):
		Six Months Ended June 30,
		2014						2013
		Common			Treasury			Common		Treasury
		Stock			Stock			Stock		Stock
	Balance as of beginning of period	673			(138	)		673		(121	)
	Transactions in connection with
	stock-based compensation plans:
	Stock issuances	—			2			—		3
	Stock repurchases	—			(1	)		—		(5	)
	Stock repurchases under buyback program	—			(7	)		—		(8	)
	Balance as of end of period	673			(144	)		673		(131	)
Income tax effects related to components of other comprehensive income	'
	The tax effects allocated to each component of other comprehensive income (loss) were as follows (in millions):
		Three Months Ended June 30,
		2014										2013
		Before-Tax Amount				Tax Expense (Benefit)			Net Amount			Before-Tax Amount			Tax Expense (Benefit)			Net Amount
	Foreign currency translation adjustment	$	150			$	—		$	150		$	(64	)	$	—		$	(64	)
	Pension and other postretirement benefits:
	Amounts reclassified into income related to:
	Net actuarial loss	9				3			6			15			5			10
	Prior service credit	(9		)		(5		)	(4		)	(9		)	(4		)	(5		)
	Net gain on pension and other	—				(2		)	2			6			1			5
	postretirement benefits
	Derivative instruments designated and
	qualifying as cash flow hedges:
	Net loss arising during the period	(3		)		—			(3		)	(10		)	(3		)	(7		)
	Net loss reclassified into income	—				—			—			8			3			5
	Net loss on cash flow hedges	(3		)		—			(3		)	(2		)	—			(2		)
	Other comprehensive income (loss)	$	147			$	(2	)	$	149		$	(60	)	$	1		$	(61	)
		Six Months Ended June 30,
		2014										2013
		Before-Tax Amount				Tax Expense (Benefit)			Net Amount			Before-Tax Amount			Tax Expense (Benefit)			Net Amount
	Foreign currency translation adjustment	$	76			$	—		$	76		$	(268	)	$	—		$	(268	)
	Pension and other postretirement benefits:
	Gain arising during the period related to	—				—			—			328			115			213
	plan amendments
	Amounts reclassified into income related to:
	Net actuarial loss	17				6			11			29			10			19
	Prior service credit	(19		)		(8		)	(11		)	(15		)	(6		)	(9		)
	Net gain (loss) on pension and other	(2		)		(2		)	—			342			119			223
	postretirement benefits
	Derivative instruments designated and
	qualifying as cash flow hedges:
	Net gain (loss) arising during the period	4				2			2			(9		)	(3		)	(6		)
	Net (gain) loss reclassified into income	(3		)		(1		)	(2		)	5			2			3
	Net gain (loss) on cash flow hedges	1				1			—			(4		)	(1		)	(3		)
	Other comprehensive income (loss)	$	75			$	(1	)	$	76		$	70		$	118		$	(48	)
Schedule of changes in accumulated other comprehensive income	'
	Changes in accumulated other comprehensive income by component, net of tax, were as follows (in millions):
		Foreign				Defined			Gains and			Total
		Currency				Benefit			(Losses) on
		Translation				Plans			Cash Flow
		Adjustment				Items			Hedges
	Balance as of December 31, 2013	$	408			$	(58	)	$	—		$	350
	Other comprehensive income	76				—			2			78
	before reclassifications
	Amounts reclassified from	—				—			(2		)	(2		)
	accumulated other comprehensive
	income (loss)
	Net other comprehensive income	76				—			—			76
	Balance as of June 30, 2014	$	484			$	(58	)	$	—		$	426
		Foreign				Defined			Gains and			Total
		Currency				Benefit			(Losses) on
		Translation				Plans			Cash Flow
		Adjustment				Items			Hedges
	Balance as of December 31, 2012	$	665			$	(558	)	$	1		$	108
	Other comprehensive income (loss)	(268		)		213			(6		)	(61		)
	before reclassifications
	Amounts reclassified from	—				10			3			13
	accumulated other comprehensive
	income (loss)
	Net other comprehensive income (loss)	(268		)		223			(3		)	(48		)
	Separation of retail business	(159		)		—			—			(159		)
	Balance as of June 30, 2013	$	238			$	(335	)	$	(2	)	$	(99	)

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2014
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]	'
Periodic benefit cost related to our defined benefit plans, net	'
	The components of net periodic benefit cost related to our defined benefit plans were as follows (in millions) :
		Pension Plans						Other Postretirement
								Benefit Plans
		2014			2013			2014			2013
	Three months ended June 30:
	Service cost	$	30		$	35		$	1		$	3
	Interest cost	23			22			4			5
	Expected return on plan assets	(33		)	(34		)	—			—
	Amortization of:
	Prior service credit	(5		)	(6		)	(4		)	(3		)
	Net actuarial loss	9			15			—			—
	Net periodic benefit cost	$	24		$	32		$	1		$	5
	Six months ended June 30:
	Service cost	$	60		$	71		$	3		$	6
	Interest cost	46			44			8			9
	Expected return on plan assets	(66		)	(66		)	—			—
	Amortization of:
	Prior service credit	(10		)	(9		)	(9		)	(6		)
	Net actuarial loss	17			29			—			—
	Net periodic benefit cost	$	47		$	69		$	2		$	9

Earnings_Per_Common_Share_Tabl

Earnings Per Common Share (Tables)	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Schedule of earnings per common share, basic and diluted	'
	Earnings per common share were computed as follows (dollars and shares in millions, except per share amounts):
		Three Months Ended June 30,
		2014						2013
		Restricted			Common			Restricted		Common
		Stock			Stock			Stock		Stock
	Earnings per common share from
	continuing operations:
	Net income attributable to Valero stockholders				$	651				$	463
	from continuing operations
	Less dividends paid:
	Common stock				133					109
	Undistributed earnings				$	518				$	354
	Weighted-average common shares outstanding	2			529			3		543
	Earnings per common share from
	continuing operations:
	Distributed earnings	$	0.25		$	0.25		$	0.2	$	0.2
	Undistributed earnings	0.98			0.98			0.65		0.65
	Total earnings per common share from	$	1.23		$	1.23		$	0.85	$	0.85
	continuing operations
	Earnings per common share from
	continuing operations – assuming dilution:
	Net income attributable to Valero stockholders				$	651				$	463
	from continuing operations
	Weighted-average common shares outstanding				529					543
	Common equivalent shares:
	Stock options				3					3
	Performance awards and				2					2
	nonvested restricted stock
	Weighted-average common shares outstanding –				534					548
	assuming dilution
	Earnings per common share from				$	1.22				$	0.84
	continuing operations – assuming dilution
		Six Months Ended June 30,
		2014						2013
		Restricted			Common			Restricted		Common
		Stock			Stock			Stock		Stock
	Earnings per common share from
	continuing operations:
	Net income attributable to Valero stockholders				$	1,480				$	1,114
	from continuing operations
	Less dividends paid:
	Common stock				265					219
	Nonvested restricted stock				1					1
	Undistributed earnings				$	1,214				$	894
	Weighted-average common shares outstanding	2			530			3		546
	Earnings per common share from
	continuing operations:
	Distributed earnings	$	0.5		$	0.5		$	0.4	$	0.4
	Undistributed earnings	2.28			2.28			1.63		1.63
	Total earnings per common share from	$	2.78		$	2.78		$	2.03	$	2.03
	continuing operations
	Earnings per common share from
	continuing operations – assuming dilution:
	Net income attributable to Valero stockholders				$	1,480				$	1,114
	from continuing operations
	Weighted-average common shares outstanding				530					546
	Common equivalent shares:
	Stock options				3					4
	Performance awards and				2					2
	nonvested restricted stock
	Weighted-average common shares outstanding –				535					552
	assuming dilution
	Earnings per common share from				$	2.77				$	2.02
continuing operations – assuming dilution
Potentially dilutive securities excluded from calculation of earnings per common share - assuming dilution	'
	The following table reflects potentially dilutive securities (in millions) that were excluded from the calculation of “earnings per common share from continuing operations – assuming dilution” as the effect of including such securities would have been antidilutive. Stock options were excluded from weighted-average common shares outstanding – assuming dilution because the exercise price of the stock option was greater than the average market price of our common shares during each reporting period.
		Three Months Ended					Six Months Ended
		June 30,					June 30,
		2014		2013			2014		2013
	Stock options	1		3			1		3

Segment_Information_Tables

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2014
Segment Reporting [Abstract]	'
Segment information for our reportable segments	'
	The following table reflects activity related to our reportable segments (in millions):
		Refining		Ethanol		Retail		Corporate			Total
	Three months ended June 30, 2014:
	Operating revenues from external	$	33,457	$	1,457	$	—	$	—		$	34,914
	customers
	Intersegment revenues	—		9		—		—			9
	Operating income (loss)	1,079		187		—		(181		)	1,085
	Three months ended June 30, 2013:
	Operating revenues from external	31,564		1,491		979		—			34,034
	customers
	Intersegment revenues	671		15		—		—			686
	Operating income (loss)	918		95		39		(247		)	805
	Six months ended June 30, 2014:
	Operating revenues from external	65,909		2,668		—		—			68,577
	customers
	Intersegment revenues	—		34		—		—			34
	Operating income (loss)	2,359		430		—		(353		)	2,436
	Six months ended June 30, 2013:
	Operating revenues from external	61,117		2,495		3,896		—			67,508
	customers
	Intersegment revenues	2,876		70		—		—			2,946
	Operating income (loss)	2,127		109		81		(454		)	1,863
	Total assets by reportable segment were as follows (in millions):
		June 30,		December 31,
		2014		2013
	Refining	$	41,326	$	40,834
	Ethanol	937		889
	Corporate	4,750		5,537
	Total assets	$	47,013	$	47,260

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information (Tables)	6 Months Ended
	Jun. 30, 2014
Supplemental Cash Flow Information [Abstract]	'
Schedule of cash flows, supplemental disclosures	'
	In order to determine net cash provided by operating activities, net income is adjusted by, among other things, changes in current assets and current liabilities as follows (in millions):
		Six Months Ended
		June 30,
		2014			2013
	Decrease (increase) in current assets:
	Receivables, net	$	837		$	412
	Inventories	(721		)	(824		)
	Income taxes receivable	(16		)	31
	Prepaid expenses and other	11			2
	Increase (decrease) in current liabilities:
	Accounts payable	(707		)	625
	Accrued expenses	12			(44		)
	Taxes other than income taxes	(71		)	268
	Income taxes payable	(369		)	(26		)
	Changes in current assets and current liabilities	$	(1,024	)	$	444
	Cash flows related to interest and income taxes were as follows (in millions):
		Six Months Ended
		June 30,
		2014			2013
	Interest paid in excess of amount capitalized	$	197		$	160
	Income taxes paid, net	1,054			243

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair value of assets and liabilities measured on recurring basis	'
	The tables below present information (in millions) about our assets and liabilities recognized at their fair values in our balance sheets categorized according to the fair value hierarchy of the inputs utilized by us to determine the fair values as of June 30, 2014 and December 31, 2013.
	We have elected to offset the fair value amounts recognized for multiple similar derivative contracts executed with the same counterparty, including any related cash collateral assets or obligations as shown below; however, fair value amounts by hierarchy level are presented on a gross basis in the tables below. We have no derivative contracts that are subject to master netting arrangements that are reflected gross on the balance sheet.
		30-Jun-14
								Total		Effect of			Effect of			Net		Cash
								Gross		Counter-			Cash			Carrying		Collateral
								Fair		party			Collateral			Value on		Paid or
		Fair Value Hierarchy						Value		Netting			Netting			Balance		Received
		Level 1		Level 2		Level 3										Sheet		Not Offset
	Assets:
	Commodity derivative	$	1,182	$	28	$	—	$	1,210	$	(1,182	)	$	(5	)	$	23	$	—
	contracts
	Investments of certain	100		—		11		111		n/a			n/a			111		n/a
	benefit plans
	Total	$	1,282	$	28	$	11	$	1,321	$	(1,182	)	$	(5	)	$	134
	Liabilities:
	Commodity derivative	$	1,260	$	32	$	—	$	1,292	$	(1,182	)	$	(109	)	$	1	$	(159	)
	contracts
	Biofuels blending	—		77		—		77		n/a			n/a			77		n/a
	obligation
	Physical purchase	—		11		—		11		n/a			n/a			11		n/a
	contracts
	Foreign currency	13		—		—		13		n/a			n/a			13		n/a
	contracts
	Total	$	1,273	$	120	$	—	$	1,393	$	(1,182	)	$	(109	)	$	102
		31-Dec-13
								Total		Effect of			Effect of			Net		Cash
								Gross		Counter-			Cash			Carrying		Collateral
								Fair		party			Collateral			Value on		Paid or
		Fair Value Hierarchy						Value		Netting			Netting			Balance		Received
		Level 1		Level 2		Level 3										Sheet		Not Offset
	Assets:
	Commodity derivative	$	499	$	38	$	—	$	537	$	(505	)	$	(7	)	$	25	$	—
	contracts
	Investments of certain benefit plans	98		—		11		109		n/a			n/a			109		n/a
	Total	$	597	$	38	$	11	$	646	$	(505	)	$	(7	)	$	134
	Liabilities:
	Commodity derivative	$	492	$	24	$	—	$	516	$	(505	)	$	(6	)	$	5	$	(76	)
	contracts
	Biofuels blending obligation	—		11		—		11		n/a			n/a			11		n/a
	Physical purchase contracts	—		5		—		5		n/a			n/a			5		n/a
	Foreign currency	8		—		—		8		n/a			n/a			8		n/a
	contracts
	Total	$	500	$	40	$	—	$	540	$	(505	)	$	(6	)	$	29
Carrying amounts and estimated fair value of financial instruments	'
	Financial instruments that we recognize in our balance sheets at their carrying amounts are shown in the table below (in millions):
		June 30, 2014				December 31, 2013
		Carrying		Fair		Carrying		Fair
		Amount		Value		Amount		Value
	Financial assets:
	Cash and temporary cash investments	$	3,480	$	3,480	$	4,292	$	4,292
	Financial liabilities:
	Debt (excluding capital leases)	6,348		7,862		6,525		7,659

Price_Risk_Management_Activiti1

Price Risk Management Activities (Tables)	6 Months Ended
	Jun. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Risk management activities by type of risk	'
	As of June 30, 2014, we had the following outstanding commodity derivative instruments that were used as economic hedges, as well as commodity derivative instruments related to the physical purchase of corn at a fixed price. The information presents the notional volume of outstanding contracts by type of instrument and year of maturity (volumes in thousands of barrels, except those identified as corn contracts that are presented in thousands of bushels, and soybean oil contracts that are presented in thousands of pounds).
			Notional Contract Volumes by
			Year of Maturity
	Derivative Instrument		2014			2015
	Crude oil and refined products:
	Swaps – long		10,145			—
	Swaps – short		10,286			30
	Futures – long		89,761			39
	Futures – short		108,422			1
	Corn:
	Futures – long		20,770			5
	Futures – short		43,805			3,415
	Physical contracts – long		24,339			3,405
	Soybean oil:
	Futures – long		115,440			—
	Futures – short		212,520			—
	As of June 30, 2014, we had the following outstanding commodity derivative instruments that were entered into to hedge forecasted purchases of crude oil and sales of refined products. The information presents the notional volume of outstanding contracts by type of instrument and year of maturity (volumes in thousands of barrels).
			Notional
			Contract
			Volumes by
			Year of
			Maturity
	Derivative Instrument		2014
	Crude oil and refined products:
	Futures – long		6,006
	Futures – short		2,793
	Physical contracts – short		3,213
	As of June 30, 2014, we had the following outstanding commodity derivative instruments that were entered into for trading purposes. The information presents the notional volume of outstanding contracts by type of instrument and year of maturity (volumes represent thousands of barrels, except those identified as natural gas contracts that are presented in billions of British thermal units).
			Notional Contract Volumes by
			Year of Maturity
	Derivative Instrument		2014			2015
	Crude oil and refined products:
	Swaps – long		10,650			120
	Swaps – short		10,650			120
	Futures – long		96,138			16,519
	Futures – short		95,818			16,194
	Options – long		700			—
	Options – short		1,150			—
	Natural gas:
	Futures – long		250			1,800
	Futures – short		750			—
	Options – long		500			—
Fair values of derivative instruments	'
	The following tables provide information about the fair values of our derivative instruments as of June 30, 2014 and December 31, 2013 (in millions) and the line items in the balance sheets in which the fair values are reflected. See Note 13 for additional information related to the fair values of our derivative instruments.
	As indicated in Note 13, we net fair value amounts recognized for multiple similar derivative contracts executed with the same counterparty under master netting arrangements, including cash collateral assets and obligations. The tables below, however, are presented on a gross asset and gross liability basis, which results in the reflection of certain assets in liability accounts and certain liabilities in asset accounts.
		Balance Sheet		June 30, 2014
		Location		Asset				Liability
				Derivatives				Derivatives
	Derivatives designated as
	hedging instruments
	Commodity contracts:
	Futures	Receivables, net		$	3			$	2
	Derivatives not designated as
	hedging instruments
	Commodity contracts:
	Futures	Receivables, net		$	1,179			$	1,258
	Swaps	Receivables, net		26				29
	Swaps	Accrued expenses		2				3
	Physical purchase contracts	Inventories		—				11
	Foreign currency contracts	Accrued expenses		—				13
	Total			$	1,207			$	1,314
	Total derivatives			$	1,210			$	1,316
		Balance Sheet		December 31, 2013
		Location		Asset				Liability
				Derivatives				Derivatives
	Derivatives designated as
	hedging instruments
	Commodity contracts:
	Futures	Receivables, net		$	25			$	36
	Derivatives not designated as
	hedging instruments
	Commodity contracts:
	Futures	Receivables, net		$	474			$	455
	Swaps	Receivables, net		33				18
	Swaps	Prepaid expenses and other		3				—
	Swaps	Accrued expenses		—				5
	Options	Receivables, net		2				2
	Physical purchase contracts	Inventories		—				5
	Foreign currency contracts	Accrued expenses		—				8
	Total			$	512			$	493
	Total derivatives			$	537			$	529
Effect of derivative instruments on income and other comprehensive income	'
	The following tables provide information about the gain or loss recognized in income and other comprehensive income on our derivative instruments and the line items in the financial statements in which such gains and losses are reflected (in millions).
	Derivatives in Fair Value		Location of Gain (Loss)		Three Months Ended							Six Months Ended
	Hedging Relationships		Recognized in Income		June 30,							June 30,
			on Derivatives		2014				2013			2014			2013
	Commodity contracts:
	Gain (loss) recognized in		Cost of sales		$	5			$	(20	)	$	(26	)	$	(21	)
	income on derivatives
	Gain (loss) recognized in		Cost of sales		(5		)		22			25			22
	income on hedged item
	Gain (loss) recognized in		Cost of sales		—				2			(1		)	1
	income on derivatives
	(ineffective portion)
	Trading Derivatives		Location of Gain (Loss)		Three Months Ended							Six Months Ended
			Recognized in		June 30,							June 30,
			Income on Derivatives		2014				2013			2014			2013
	Commodity contracts		Cost of sales		$	4			$	3		$	3		$	5
	RINs fixed-price contracts		Cost of sales		—				(7		)	—			(20		)
	Total				$	4			$	(4	)	$	3		$	(15	)
	Derivatives Designated as		Location of Gain (Loss)		Three Months Ended							Six Months Ended
	Economic Hedges		Recognized in		June 30,							June 30,
	and Other		Income on Derivatives
	Derivative Instruments				2014				2013			2014			2013
	Commodity contracts		Cost of sales		$	(136	)		$	246		$	(132	)	$	281
	Foreign currency contracts		Cost of sales		(32		)		11			(23		)	36
	Total				$	(168	)		$	257		$	(155	)	$	317
	Derivatives in Cash Flow		Location of Gain (Loss)		Three Months Ended							Six Months Ended
	Hedging Relationships		Recognized in Income		June 30,							June 30,
			on Derivatives		2014				2013			2014			2013
	Commodity contracts:
	Gain (loss) recognized in				$	(3	)		$	(10	)	$	4		$	(9	)
	OCI on derivatives
	(effective portion)
	Gain (loss) reclassified		Cost of sales		—				(8		)	3			(5		)
	from accumulated OCI
	into income
	(effective portion)
	Gain (loss) recognized in		Cost of sales		3				(2		)	(1		)	(3		)
	income on derivatives
	(ineffective portion)

Valero_Energy_Partners_LP_Deta

Valero Energy Partners LP (Details) (USD $)

6 Months Ended

0 Months Ended

0 Months Ended

In Millions, except Share data, unless otherwise specified

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Jul. 01, 2014

Jul. 01, 2014

Jul. 01, 2014

Jun. 30, 2014

Dec. 31, 2013

Dec. 16, 2013

Dec. 16, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Valero Energy Partners LP [Member]

Valero Energy Partners LP [Member]

Valero Energy Partners LP [Member]

Subsidiary Issuer [Member]

Subsidiary Issuer [Member]

Subsidiary Issuer [Member]

Subsidiary Issuer [Member]

Subsidiary Issuer [Member]

Subsidiary Issuer [Member]

Subsidiary Issuer [Member]

Subsidiary Issuer [Member]

Texas Crude Systems Business [Member]

Texas Crude Systems Business [Member]

Texas Crude Systems Business [Member]

Valero Energy Partners LP [Member]

Valero Energy Partners LP [Member]

Valero Energy Partners LP [Member]

Valero Energy Partners LP [Member]

Limited Partner [Member]

Limited Partner [Member]

General Partner [Member]

General Partner [Member]

Subsequent Event [Member]

Lease Agreements [Member]

Lease Agreements [Member]

Offering [Member]

Offering [Member]

Subsequent Event [Member]

Subsequent Event [Member]

renewal

Noncontrolling Interest Transactions (Textual)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common units sold in the Offering

'

'

'

'

'

'

'

'

'

17,250,000

'

'

'

'

'

Common unit price per unit

'

'

'

'

'

'

'

'

'

'

$23

'

'

'

'

Net proceeds from the Offering

'

'

'

'

'

'

'

'

'

$369

'

'

'

'

'

Noncontrolling interest, ownership percentage by parent

'

'

'

'

'

'

'

'

'

'

'

68.60%

68.60%

2.00%

2.00%

Noncontrolling interest, ownership percentage by public

'

'

'

'

'

'

'

'

'

'

'

29.40%

29.40%

'

'

Cash and temporary cash investments

3,480

2,398

4,292

1,723

'

'

'

382

375

'

'

'

'

'

'

Noncontrolling interests

509

'

486

'

'

'

'

372

370

'

'

'

'

'

'

Proceeds from sale of Texas Crude Systems Business

'

'

'

'

154

'

'

'

'

'

'

'

'

'

'

Initial agreement term

'

'

'

'

'

'10 years

'

'

'

'

'

'

'

'

'

Number of renewal options

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

Duration of renewal option

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

Decrease in VLP's cash and temporary cash investments

($812)

$675

'

'

($154)

'

'

'

'

'

'

'

'

'

'

Discontinued_Operations_Detail

Discontinued Operations (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Liabilities and Expenses Related to the Aruba Refinery (Textual)	'	'	'	'
Asset retirement obligation charged to accretion expense	'	'	$63	$0
Aruba Refinery [Member]	'	'	'	'
Selected Results of Operations of the Aruba Refinery	'	'	'	'
Operating revenues	0	0	0	0
Income (loss) before income taxes	-63	3	-64	6
Liabilities and Expenses Related to the Aruba Refinery (Textual)	'	'	'	'
Asset retirement obligation recognized	59	'	59	'
Asset retirement obligation charged to accretion expense	59	'	59	'
Liabilities recognized for obligations under certain contracts	4	'	4	'
Total liabilities recorded	63	'	63	'
Liabilities classified as current liability	30	'	30	'
Liabilities classified as long-term liability	$33	'	$33	'
Required dismantlement period	'3 years	'	'	'

Separation_of_Retail_Business_

Separation of Retail Business (Details) (USD $)	6 Months Ended		0 Months Ended		1 Months Ended	3 Months Ended		0 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	1-May-13	Apr. 30, 2013	Nov. 30, 2013	Jun. 30, 2013	1-May-13	1-May-13	Apr. 16, 2013	1-May-13
			Spinoff [Member]	Spinoff [Member]	Spinoff [Member]	Spinoff [Member]	Spinoff [Member]	Spinoff [Member]	Spinoff [Member]	Spinoff [Member]
								Notes Payable to Banks [Member]	Sourced From Parent's Short-Term Borrowings [Member]	Sourced From Entity Spunoff [Member]
									Notes Payable to Banks [Member]
Separation of Retail Business (Textual)	'	'	'	'	'	'	'	'	'	'
Spinoff transaction, ownership percentage by Valero stockholders	'	'	'	'	'	'	80.00%	'	'	'
Cash distributed to Valero by CST Brands, Inc.	$0	$500	$1,050	'	'	'	'	'	'	$500
Proceeds from short-term debt in anticipation of separation	0	550	'	'	'	'	'	'	550	'
Senior unsecured bonds of CST issued to us	'	'	'	'	'	'	'	550	'	'
CST securities exchanged in settlement of short-term borrowings	'	'	'	'	'	'	'	550	'	'
Cash held and retained by CST Brands, Inc. upon separation	0	315	'	315	'	'	'	'	'	'
Cost of separation in general and administrative expense	'	'	'	'	'	$30	'	'	'	'
Retained ownership percentage disposed	'	'	'	'	20.00%	'	'	'	'	'

Inventories_Details

Inventories (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Schedule of Inventories	'	'
Refinery feedstocks	$3,380,000,000	$2,135,000,000
Refined products and blendstocks	2,732,000,000	3,231,000,000
Ethanol feedstocks and products	182,000,000	166,000,000
Materials and supplies	232,000,000	226,000,000
Inventories	6,526,000,000	5,758,000,000
Inventories (Textual)	'	'
Excess of market value over carrying amount of LIFO inventories	7,200,000,000	6,900,000,000
Amount of non-LIFO inventory	$914,000,000	$851,000,000

Debt_Credit_Facilities_Details

Debt, Credit Facilities (Details)

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Other Letter of Credit [Member]

Other Letter of Credit [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

USD ($)

USD ($)

Letter of Credit [Member]

Letter of Credit [Member]

U S Revolver [Member]

U S Revolver [Member]

U S Revolver [Member]

U S Revolver [Member]

U S Revolver Letter of Credit [Member]

U S Revolver Letter of Credit [Member]

VLP Revolver [Member]

VLP Revolver [Member]

VLP Revolver [Member]

VLP Revolver Letter of Credit [Member]

VLP Revolver Letter of Credit [Member]

Canadian Revolver [Member]

Canadian Revolver [Member]

Canadian Revolver [Member]

Canadian Revolver Letter of Credit [Member]

Canadian Revolver Letter of Credit [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Maximum [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

CAD

CAD

CAD

CAD

CAD

Line of Credit Facility

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit facility, maximum borrowing capacity

'

'

$550,000,000

'

$3,000,000,000

'

'

'

'

'

$300,000,000

'

'

'

'

50,000,000

'

'

'

'

Line of credit facility, expiration date

'

'

30-Jun-15

'

30-Nov-18

'

'

'

'

'

31-Dec-18

'

'

'

'

30-Nov-14

'

'

'

'

Amount outstanding

206,000,000

189,000,000

0

278,000,000

0

'

0

'

59,000,000

59,000,000

0

'

0

0

0

0

'

0

10,000,000

10,000,000

Credit Facilities (Textual)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit facility, accordion feature, higher borrowing capacity option

'

'

'

'

4,500,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt to capitalization ratios as per terms of revolver

'

'

'

'

0.14

'

0.12

0.6

'

'

'

'

'

'

'

'

'

'

'

'

Borrowings from long-term lines of credit

'

'

'

'

0

0

'

'

'

'

0

0

'

'

'

0

0

'

'

'

Repayments of long-term lines of credit

'

'

'

'

$0

$0

'

'

'

'

$0

$0

'

'

'

0

0

'

'

'

Debt_NonBank_Debt_Details

Debt, Non-Bank Debt (Details) (Senior Notes [Member], USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2013
	Senior Notes Due In 2014 [Member]	Senior Notes Due In June 2013 [Member]	Senior Notes Due In January 2013 [Member]
Non-Bank Debt (Textual)	'	'	'
Debt repayments	$200,000,000	$300,000,000	$180,000,000
Interest rate of notes in percentage	4.75%	4.75%	6.70%

Debt_Accounts_Receivable_Sales

Debt, Accounts Receivable Sales Facility and Capitalized Interest (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
					Credit Facilities [Member]	Credit Facilities [Member]	Credit Facilities [Member]	Credit Facilities [Member]	Credit Facilities [Member]
					VLP Revolver [Member]	VLP Revolver [Member]	A/R Sales Facility [Member]	A/R Sales Facility [Member]	A/R Sales Facility [Member]
Line of Credit Facility [Line Items]	'	'	'	'	'	'	'	'	'
Proceeds from Long-term Lines of Credit	'	'	'	'	$0	$0	'	'	'
Accounts Receivable Sales Facility (Textual)	'	'	'	'	'	'	'	'	'
Line of credit facility, maximum borrowing capacity	'	'	'	'	300,000,000	'	1,500,000,000	'	'
Maturity date of accounts receivable sales facility	'	'	'	'	31-Dec-18	'	31-Jul-15	'	'
Proceeds from accounts receivable sales facility	'	'	'	'	'	'	0	0	'
Repayments under accounts receivable sales facility	'	'	'	'	'	'	0	0	'
Amount outstanding	'	'	'	'	'	'	100,000,000	'	100,000,000
Capitalized Interest (Textual)	'	'	'	'	'	'	'	'	'
Interest costs incurred, capitalized	18,000,000	45,000,000	35,000,000	85,000,000	'	'	'	'	'
Repayments of Long-term Lines of Credit	'	'	'	'	$0	$0	'	'	'

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (USD $)	Jun. 30, 2014
In Millions, unless otherwise specified
Commitments and Contingencies (Textual)	'
Minimum range of possible loss contingency	$0
Maximum range of possible loss contingency	$200

Equity_Details

Equity (Details) (USD $)

3 Months Ended

6 Months Ended

1 Months Ended

0 Months Ended

6 Months Ended

In Millions, except Share data, unless otherwise specified

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jul. 31, 2014

Jul. 29, 2014

Jul. 29, 2014

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Subsequent Event [Member]

Dividend Declared [Member]

Dividend Declared [Member]

Parent [Member]

Parent [Member]

Common Stock [Member]

Common Stock [Member]

Treasury Stock [Member]

Treasury Stock [Member]

Noncontrolling Interest [Member]

Noncontrolling Interest [Member]

Shares Purchased Related To Stock-Based Compensation Plans [Member]

Shares Purchased Related To Stock-Based Compensation Plans [Member]

Shares Purchased Related To Stock-Based Compensation Plans [Member]

Shares Purchased Related To Stock-Based Compensation Plans [Member]

Shares Purchased Related To Stock-Based Compensation Plans [Member]

Shares Purchased Related To Stock-Based Compensation Plans [Member]

Shares Purchased Under Programs [Member]

Shares Purchased Under Programs [Member]

Shares Purchased Under Programs [Member]

Shares Purchased Under Programs [Member]

Shares Purchased Under Programs [Member]

Shares Purchased Under Programs [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Parent [Member]

Parent [Member]

Treasury Stock [Member]

Treasury Stock [Member]

Parent [Member]

Parent [Member]

Treasury Stock [Member]

Treasury Stock [Member]

Reconciliation of the Beginning and Ending Balances of the Carrying Amounts of Equity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance as of beginning of period

'

'

$19,946

$18,095

'

'

'

$19,460

$18,032

'

'

'

'

$486

$63

'

'

'

'

'

'

'

'

'

'

'

'

Net income (loss)

593

465

1,429

1,117

'

'

'

1,416

1,120

'

'

'

'

13

-3

'

'

'

'

'

'

'

'

'

'

'

'

Dividends

'

'

-266

-220

'

'

'

-266

-220

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock-based compensation expense

'

'

21

25

'

'

'

21

25

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Tax deduction in excess of stock-based compensation expense

'

'

31

27

'

'

'

31

27

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Transactions in connection with stock-based compensation plans:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock issuances

'

'

32

43

'

'

'

32

43

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock repurchases

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-76

-196

-76

-196

'

'

-483

-364

-483

-364

'

'

Separation of retail business

'

'

0

-499

'

'

'

0

-499

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contributions from noncontrolling interests

'

'

14

45

'

'

'

0

0

'

'

'

'

14

45

'

'

'

'

'

'

'

'

'

'

'

'

Distributions to public unitholders of Valero Energy Partners LP

'

'

-4

0

'

'

'

0

0

'

'

'

'

-4

0

'

'

'

'

'

'

'

'

'

'

'

'

Other comprehensive income (loss)

149

-61

76

-48

'

'

'

76

-48

'

'

'

'

0

0

'

'

'

'

'

'

'

'

'

'

'

'

Balance as of end of period

$20,720

$18,025

$20,720

$18,025

'

'

'

$20,211

$17,920

'

'

'

'

$509

$105

'

'

'

'

'

'

'

'

'

'

'

'

Share Activity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, shares, beginning balance

'

'

'

'

'

'

'

'

'

673,000,000

673,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Treasury stock, shares, beginning balance

'

'

-137,932,138

'

'

'

'

'

'

'

'

-138,000,000

-121,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock issuances

'

'

'

'

'

'

'

'

'

0

0

2,000,000

3,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock repurchases

'

'

'

'

-2,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,000,000

-5,000,000

'

'

'

'

-7,000,000

-8,000,000

Common stock, shares, ending balance

'

'

'

'

'

'

'

'

'

673,000,000

673,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Treasury stock, shares, ending balance

-143,579,323

'

-143,579,323

'

'

'

'

'

'

'

'

-144,000,000

-131,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity (Textual)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividends payable, date declared

'

'

'

'

'

29-Jul-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividends payable, amount per share

'

'

'

'

'

'

$0.28

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividends payable, date to be paid

'

'

'

'

'

17-Sep-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividends payable, date of record

'

'

'

'

'

20-Aug-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity_Income_Tax_Effects_on_O

Equity, Income Tax Effects on Other Comprehensive Income (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Tax Effects Related to Components of Other Comprehensive Income	'	'	'	'
Foreign currency translation adjustment, before-tax amount	$150	($64)	$76	($268)
Pension and other postretirement benefits:	'	'	'	'
Gain arising during the period related to plan amendments, before-tax amount	'	'	0	328
Amounts reclassified into income related to:	'	'	'	'
Net actuarial loss, before-tax amount	9	15	17	29
Prior service credit, before-tax amount	-9	-9	-19	-15
Net gain (loss) on pension and other postretirement benefits, before-tax amount	0	6	-2	342
Derivative instruments designated and qualifying as cash flow hedges:	'	'	'	'
Net gain (loss) arising during the period, before-tax amount	-3	-10	4	-9
Net (gain) loss reclassified into income, before-tax amount	0	8	-3	5
Net gain (loss) on cash flow hedges, before-tax amount	-3	-2	1	-4
Other comprehensive income (loss), before-tax amount	147	-60	75	70
Foreign currency translation adjustment, tax expense (benefit)	0	0	0	0
Pension and other postretirement benefits:	'	'	'	'
Gain arising during the period related to plan amendments, tax expense (benefit)	'	'	0	115
Amounts reclassified into income related to:	'	'	'	'
Net actuarial loss, tax expense (benefit)	3	5	6	10
Prior service credit, tax expense (benefit)	-5	-4	-8	-6
Net gain (loss) on pension and other postretirement benefits, tax expense (benefit)	-2	1	-2	119
Derivative instruments designated and qualifying as cash flow hedges:	'	'	'	'
Net gain (loss) arising during the period, tax expense (benefit)	0	-3	2	-3
Net (gain) loss reclassified into income, tax expense (benefit)	0	3	-1	2
Net gain (loss) on cash flow hedges, tax expense (benefit)	0	0	1	-1
Other comprehensive income (loss), tax expense (benefit)	-2	1	-1	118
Foreign currency translation adjustment, net	150	-64	76	-268
Pension and other postretirement benefits:	'	'	'	'
Gain arising during the period related to plan amendments, net	'	'	0	213
Amounts reclassified into income related to:	'	'	'	'
Net actuarial loss, net	6	10	11	19
Prior service credit, net	-4	-5	-11	-9
Net gain (loss) on pension and other postretirement benefits, net	2	5	0	223
Derivative instruments designated and qualifying as cash flow hedges:	'	'	'	'
Net gain (loss) arising during the period, net	-3	-7	2	-6
Net (gain) loss reclassified into income, net	0	5	-2	3
Net gain (loss) on cash flow hedges, net	-3	-2	0	-3
Other comprehensive income (loss)	$149	($61)	$76	($48)

Equity_Changes_in_Accumulated_

Equity, Changes in Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Changes in Accumulated Other Comprehensive Income, By Component	'	'	'	'
Beginning balance, accumulated other comprehensive income (loss), net of tax	'	'	$350	'
Net other comprehensive income (loss)	149	-61	76	-48
Separation of retail business	'	'	0	-499
Ending balance, accumulated other comprehensive income (loss), net of tax	426	'	426	'
Accumulated Other Comprehensive Income (Loss) [Member]	'	'	'	'
Changes in Accumulated Other Comprehensive Income, By Component	'	'	'	'
Beginning balance, accumulated other comprehensive income (loss), net of tax	'	'	350	108
Other comprehensive income (loss) before reclassifications	'	'	78	-61
Amounts reclassified from accumulated other comprehensive income (loss)	'	'	-2	13
Net other comprehensive income (loss)	'	'	76	-48
Separation of retail business	'	'	'	-159
Ending balance, accumulated other comprehensive income (loss), net of tax	426	-99	426	-99
Foreign Currency Translation Adjustment [Member]	'	'	'	'
Changes in Accumulated Other Comprehensive Income, By Component	'	'	'	'
Beginning balance, accumulated other comprehensive income (loss), net of tax	'	'	408	665
Other comprehensive income (loss) before reclassifications	'	'	76	-268
Amounts reclassified from accumulated other comprehensive income (loss)	'	'	0	0
Net other comprehensive income (loss)	'	'	76	-268
Separation of retail business	'	'	'	-159
Ending balance, accumulated other comprehensive income (loss), net of tax	484	238	484	238
Defined Benefit Plans Items [Member]	'	'	'	'
Changes in Accumulated Other Comprehensive Income, By Component	'	'	'	'
Beginning balance, accumulated other comprehensive income (loss), net of tax	'	'	-58	-558
Other comprehensive income (loss) before reclassifications	'	'	0	213
Amounts reclassified from accumulated other comprehensive income (loss)	'	'	0	10
Net other comprehensive income (loss)	'	'	0	223
Separation of retail business	'	'	'	0
Ending balance, accumulated other comprehensive income (loss), net of tax	-58	-335	-58	-335
Gains (Losses) on Cash Flow Hedges [Member]	'	'	'	'
Changes in Accumulated Other Comprehensive Income, By Component	'	'	'	'
Beginning balance, accumulated other comprehensive income (loss), net of tax	'	'	0	1
Other comprehensive income (loss) before reclassifications	'	'	2	-6
Amounts reclassified from accumulated other comprehensive income (loss)	'	'	-2	3
Net other comprehensive income (loss)	'	'	0	-3
Separation of retail business	'	'	'	0
Ending balance, accumulated other comprehensive income (loss), net of tax	$0	($2)	$0	($2)

Employee_Benefit_Plans_Details

Employee Benefit Plans (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Employee Benefit Plans (Textual)	'	'	'	'
Gain arising during the period related to plan amendments	'	'	$0	$328
Pension Plan [Member]	'	'	'	'
Components of net periodic benefit cost:	'	'	'	'
Service cost	30	35	60	71
Interest cost	23	22	46	44
Expected return on plan assets	-33	-34	-66	-66
Amortization of:	'	'	'	'
Prior service credit	-5	-6	-10	-9
Net actuarial loss	9	15	17	29
Net periodic benefit cost	24	32	47	69
Employee Benefit Plans (Textual)	'	'	'	'
Decrease to pension liabilities related to plan amendments	'	'	'	328
Gain arising during the period related to plan amendments	'	'	'	328
Contributions to pension plans	'	'	22	22
Other Postretirement Benefit Plan [Member]	'	'	'	'
Components of net periodic benefit cost:	'	'	'	'
Service cost	1	3	3	6
Interest cost	4	5	8	9
Expected return on plan assets	0	0	0	0
Amortization of:	'	'	'	'
Prior service credit	-4	-3	-9	-6
Net actuarial loss	0	0	0	0
Net periodic benefit cost	1	5	2	9
Employee Benefit Plans (Textual)	'	'	'	'
Contributions to pension plans	'	'	$9	$8

Earnings_Per_Common_Share_Deta

Earnings Per Common Share (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings per common share from continuing operations:	'	'	'	'
Net income attributable to Valero stockholders from continuing operations	$651	$463	$1,480	$1,114
Less dividends paid:	'	'	'	'
Weighted-average common shares outstanding (in shares)	529	543	530	546
Earnings per common share from continuing operations:	'	'	'	'
Total earnings per common share from continuing operations (in usd per share)	$1.23	$0.85	$2.78	$2.03
Earnings per common share from continuing operations – assuming dilution:	'	'	'	'
Net income attributable to Valero stockholders from continuing operations	651	463	1,480	1,114
Weighted-average common shares outstanding (in shares)	529	543	530	546
Common equivalent shares:	'	'	'	'
Weighted-average common shares outstanding – assuming dilution (in shares)	534	548	535	552
Earnings per common share from continuing operations – assuming dilution (in usd per share)	$1.22	$0.84	$2.77	$2.02
Common Stock [Member]	'	'	'	'
Earnings per common share from continuing operations:	'	'	'	'
Net income attributable to Valero stockholders from continuing operations	651	463	1,480	1,114
Less dividends paid:	'	'	'	'
Common stock	133	109	265	219
Nonvested restricted stock	'	'	1	1
Undistributed earnings	518	354	1,214	894
Weighted-average common shares outstanding (in shares)	529	543	530	546
Earnings per common share from continuing operations:	'	'	'	'
Distributed earnings (in usd per share)	$0.25	$0.20	$0.50	$0.40
Undistributed earnings (in usd per share)	$0.98	$0.65	$2.28	$1.63
Total earnings per common share from continuing operations (in usd per share)	$1.23	$0.85	$2.78	$2.03
Earnings per common share from continuing operations – assuming dilution:	'	'	'	'
Net income attributable to Valero stockholders from continuing operations	$651	$463	$1,480	$1,114
Weighted-average common shares outstanding (in shares)	529	543	530	546
Common equivalent shares:	'	'	'	'
Stock options (in shares)	3	3	3	4
Performance awards and nonvested restricted stock (in shares)	2	2	2	2
Weighted-average common shares outstanding – assuming dilution (in shares)	534	548	535	552
Earnings per common share from continuing operations – assuming dilution (in usd per share)	$1.22	$0.84	$2.77	$2.02
Restricted Stock [Member]	'	'	'	'
Less dividends paid:	'	'	'	'
Weighted-average common shares outstanding (in shares)	2	3	2	3
Earnings per common share from continuing operations:	'	'	'	'
Distributed earnings (in usd per share)	$0.25	$0.20	$0.50	$0.40
Undistributed earnings (in usd per share)	$0.98	$0.65	$2.28	$1.63
Total earnings per common share from continuing operations (in usd per share)	$1.23	$0.85	$2.78	$2.03
Earnings per common share from continuing operations – assuming dilution:	'	'	'	'
Weighted-average common shares outstanding (in shares)	2	3	2	3

Earnings_Per_Common_Share_Pote

Earnings Per Common Share, Potentially Dilutive Securities (Details) (Stock Options [Member])	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Stock Options [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Common Share	'	'	'	'
Amount of potentially dilutive securities excluded from computation of earnings per common share	1	3	1	3

Segment_Information_Details

Segment Information (Details) (USD $)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

1 Months Ended

In Millions, unless otherwise specified

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Mar. 31, 2014

Refining [Member]

Refining [Member]

Ethanol [Member]

Ethanol [Member]

Corporate and Other [Member]

Corporate and Other [Member]

Operating Segments [Member]

Operating Segments [Member]

Operating Segments [Member]

Operating Segments [Member]

Operating Segments [Member]

Operating Segments [Member]

Operating Segments [Member]

Operating Segments [Member]

Operating Segments [Member]

Operating Segments [Member]

Operating Segments [Member]

Operating Segments [Member]

Corporate, Non-Segment [Member]

Corporate, Non-Segment [Member]

Corporate, Non-Segment [Member]

Corporate, Non-Segment [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Mount Vernon [Member]

Refining [Member]

Refining [Member]

Refining [Member]

Refining [Member]

Ethanol [Member]

Ethanol [Member]

Ethanol [Member]

Ethanol [Member]

Retail [Member]

Retail [Member]

Retail [Member]

Retail [Member]

Corporate and Other [Member]

Corporate and Other [Member]

Corporate and Other [Member]

Corporate and Other [Member]

Refining [Member]

Refining [Member]

Refining [Member]

Refining [Member]

Ethanol [Member]

Ethanol [Member]

Ethanol [Member]

Ethanol [Member]

Retail [Member]

Retail [Member]

Retail [Member]

Retail [Member]

Segment information for our reportable segments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

$34,914

$34,034

$68,577

$67,508

'

'

'

'

'

'

'

$33,457

$31,564

$65,909

$61,117

$1,457

$1,491

$2,668

$2,495

$0

$979

$0

$3,896

$0

$0

$0

$0

$9

$686

$34

$2,946

$0

$671

$0

$2,876

$9

$15

$34

$70

$0

$0

$0

$0

'

Operating income (loss)

1,085

805

2,436

1,863

'

'

'

'

'

'

'

1,079

918

2,359

2,127

187

95

430

109

0

39

0

81

-181

-247

-353

-454

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total assets by reportable segment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reportable segment assets

47,013

'

47,013

'

47,260

41,326

40,834

937

889

4,750

5,537

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments to Acquire Ethanol Plant (Textual)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments to acquire idled corn ethanol plant

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$34

Supplemental_Cash_Flow_Informa2

Supplemental Cash Flow Information (Details) (USD $)	6 Months Ended		1 Months Ended
In Millions, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jul. 31, 2014
			Subsequent Event [Member]
Decrease (increase) in current assets:	'	'	'
Receivables, net	$837	$412	'
Inventories	-721	-824	'
Income taxes receivable	-16	31	'
Prepaid expenses and other	11	2	'
Increase (decrease) in current liabilities:	'	'	'
Accounts payable	-707	625	'
Accrued expenses	12	-44	'
Taxes other than income taxes	-71	268	'
Income taxes payable	-369	-26	'
Changes in current assets and current liabilities	-1,024	444	'
Cash Flows Related to Interest and Income Taxes	'	'	'
Interest paid in excess of amount capitalized	197	160	'
Income taxes paid, net	1,054	243	'
Supplemental Cash Flow Information (Textual)	'	'	'
Treasury stock purchased but settled in subsequent quarter	$104	'	'
Stock repurchases (in shares)	'	'	2,000,000

Fair_Value_Measurements_Recurr

Fair Value Measurements, Recurring (Details) (Fair Value, Measurements, Recurring [Member], USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Assets:	'	'
Commodity derivative contracts	$1,210	$537
Investments of certain benefit plans	111	109
Total gross fair value, assets	1,321	646
Effect of Counterparty Netting	-1,182	-505
Effect of Cash Collateral Netting	-5	-7
Commodity derivative contracts, net assets	23	25
Net Carrying Value on Balance Sheet, Assets	134	134
Cash Collateral Received Not Offset	0	0
Liabilities:	'	'
Commodity derivative contracts	1,292	516
Biofuels blending obligation	77	11
Foreign currency contracts	13	8
Total gross fair value, liabilities	1,393	540
Effect of Counterparty Netting	-1,182	-505
Effect of Cash Collateral Netting	-109	-6
Commodity derivative contracts, net liabilities	1	5
Net Carrying Value on Balance Sheet, Liabilities	102	29
Cash Collateral Paid Not Offset	-159	-76
Physical Purchase Contracts [Member]	'	'
Liabilities:	'	'
Physical purchase contracts	11	5
Fair Value, Inputs, Level 1 [Member]	'	'
Assets:	'	'
Commodity derivative contracts	1,182	499
Investments of certain benefit plans	100	98
Total gross fair value, assets	1,282	597
Liabilities:	'	'
Commodity derivative contracts	1,260	492
Biofuels blending obligation	0	0
Foreign currency contracts	13	8
Total gross fair value, liabilities	1,273	500
Fair Value, Inputs, Level 1 [Member] | Physical Purchase Contracts [Member]	'	'
Liabilities:	'	'
Physical purchase contracts	0	0
Fair Value, Inputs, Level 2 [Member]	'	'
Assets:	'	'
Commodity derivative contracts	28	38
Investments of certain benefit plans	0	0
Total gross fair value, assets	28	38
Liabilities:	'	'
Commodity derivative contracts	32	24
Biofuels blending obligation	77	11
Foreign currency contracts	0	0
Total gross fair value, liabilities	120	40
Fair Value, Inputs, Level 2 [Member] | Physical Purchase Contracts [Member]	'	'
Liabilities:	'	'
Physical purchase contracts	11	5
Fair Value, Inputs, Level 3 [Member]	'	'
Assets:	'	'
Commodity derivative contracts	0	0
Investments of certain benefit plans	11	11
Total gross fair value, assets	11	11
Liabilities:	'	'
Commodity derivative contracts	0	0
Biofuels blending obligation	0	0
Foreign currency contracts	0	0
Total gross fair value, liabilities	0	0
Fair Value, Inputs, Level 3 [Member] | Physical Purchase Contracts [Member]	'	'
Liabilities:	'	'
Physical purchase contracts	$0	$0

Fair_Value_Measurements_Level_

Fair Value Measurements, Level 3 Reconciliation (Details) (Fair Value, Measurements, Recurring [Member], USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]	'	'	'	'
Fair Value Measurements (Textual)	'	'	'	'
Activity related to fair value amounts categorized in level 3	$0	$0	$0	$0

Fair_Value_Measurements_Nonrec

Fair Value Measurements, Nonrecurring (Details) (Fair Value, Measurements, Nonrecurring [Member], USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value Measurements (Textual)	'	'
Assets measured at fair value, nonrecurring	$0	$0
Liabilities measured at fair value, nonrecurring	$0	$0

Fair_Value_Measurements_Other_

Fair Value Measurements, Other Financial Instruments (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Financial assets:	'	'	'	'
Cash and temporary cash investments, at carrying amount	$3,480	$4,292	$2,398	$1,723
Financial liabilities:	'	'	'	'
Debt (excluding capital leases), at carrying amount	6,348	6,525	'	'
Fair Value, Inputs, Level 1 [Member]	'	'	'	'
Financial assets:	'	'	'	'
Cash and temporary cash investments, at fair value	3,480	4,292	'	'
Fair Value, Inputs, Level 2 [Member]	'	'	'	'
Financial liabilities:	'	'	'	'
Debt (excluding capital leases), at fair value	$7,862	$7,659	'	'

Price_Risk_Management_Activiti2

Price Risk Management Activities (Details) (USD $)

3 Months Ended

6 Months Ended

1 Months Ended

In Millions, unless otherwise specified

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jul. 31, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Biofuels Blending [Member]

Biofuels Blending [Member]

Biofuels Blending [Member]

Biofuels Blending [Member]

Foreign Currency Contract [Member]

Foreign Currency Contract [Member]

Fair Value Hedging [Member]

Cash Flow Hedging [Member]

Cash Flow Hedging [Member]

Cash Flow Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Economic Hedging [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Subsequent Event [Member]

MBbls

Future [Member]

Future [Member]

Forward Contracts [Member]

Future [Member]

Future [Member]

Future [Member]

Future [Member]

Future [Member]

Future [Member]

Future [Member]

Future [Member]

Future [Member]

Future [Member]

Future [Member]

Future [Member]

Forward Contracts [Member]

Forward Contracts [Member]

Swap [Member]

Swap [Member]

Swap [Member]

Swap [Member]

Future [Member]

Future [Member]

Future [Member]

Future [Member]

Future [Member]

Future [Member]

Future [Member]

Future [Member]

Swap [Member]

Swap [Member]

Swap [Member]

Swap [Member]

Options Held [Member]

Options Held [Member]

Options Held [Member]

Options Held [Member]

Options Held [Member]

Options Held [Member]

Long (Purchases) [Member]

Short (Sales) [Member]

Short (Sales) [Member]

Long (Purchases) [Member]

Long (Purchases) [Member]

Long (Purchases) [Member]

Long (Purchases) [Member]

Long (Purchases) [Member]

Long (Purchases) [Member]

Short (Sales) [Member]

Short (Sales) [Member]

Short (Sales) [Member]

Short (Sales) [Member]

Short (Sales) [Member]

Short (Sales) [Member]

Long (Purchases) [Member]

Long (Purchases) [Member]

Long (Purchases) [Member]

Long (Purchases) [Member]

Short (Sales) [Member]

Short (Sales) [Member]

Long (Purchases) [Member]

Long (Purchases) [Member]

Long (Purchases) [Member]

Long (Purchases) [Member]

Short (Sales) [Member]

Short (Sales) [Member]

Short (Sales) [Member]

Short (Sales) [Member]

Long (Purchases) [Member]

Long (Purchases) [Member]

Short (Sales) [Member]

Short (Sales) [Member]

Long (Purchases) [Member]

Long (Purchases) [Member]

Long (Purchases) [Member]

Long (Purchases) [Member]

Short (Sales) [Member]

Short (Sales) [Member]

Maturity Current Year [Member]

Maturity Current Year [Member]

Maturity Current Year [Member]

Maturity Current Year [Member]

Maturity Current Year [Member]

Maturity Current Year [Member]

Maturity Year Two [Member]

Maturity Year Two [Member]

Maturity Year Two [Member]

Maturity Current Year [Member]

Maturity Current Year [Member]

Maturity Current Year [Member]

Maturity Year Two [Member]

Maturity Year Two [Member]

Maturity Year Two [Member]

Maturity Current Year [Member]

Maturity Year Two [Member]

Maturity Current Year [Member]

Maturity Year Two [Member]

Maturity Current Year [Member]

Maturity Year Two [Member]

Maturity Current Year [Member]

Maturity Current Year [Member]

Maturity Year Two [Member]

Maturity Year Two [Member]

Maturity Current Year [Member]

Maturity Current Year [Member]

Maturity Year Two [Member]

Maturity Year Two [Member]

Maturity Current Year [Member]

Maturity Year Two [Member]

Maturity Current Year [Member]

Maturity Year Two [Member]

Maturity Current Year [Member]

Maturity Current Year [Member]

Maturity Year Two [Member]

Maturity Year Two [Member]

Maturity Current Year [Member]

Maturity Year Two [Member]

Crude Oil (in thousands of barrels) [Member]

Crude Oil (in thousands of barrels) [Member]

Crude Oil (in thousands of barrels) [Member]

Crude Oil (in thousands of barrels) [Member]

Grain (in thousands of bushels) [Member]

Soybean Oil (in thousands of pounds) [Member]

Crude Oil (in thousands of barrels) [Member]

Grain (in thousands of bushels) [Member]

Soybean Oil (in thousands of pounds) [Member]

Crude Oil (in thousands of barrels) [Member]

Grain (in thousands of bushels) [Member]

Soybean Oil (in thousands of pounds) [Member]

Crude Oil (in thousands of barrels) [Member]

Grain (in thousands of bushels) [Member]

Soybean Oil (in thousands of pounds) [Member]

Grain (in thousands of bushels) [Member]

Grain (in thousands of bushels) [Member]

Crude Oil (in thousands of barrels) [Member]

Crude Oil (in thousands of barrels) [Member]

Crude Oil (in thousands of barrels) [Member]

Crude Oil (in thousands of barrels) [Member]

Crude Oil (in thousands of barrels) [Member]

Natural Gas (in billions of BTUs) [Member]

Crude Oil (in thousands of barrels) [Member]

Natural Gas (in billions of BTUs) [Member]

Crude Oil (in thousands of barrels) [Member]

Natural Gas (in billions of BTUs) [Member]

Crude Oil (in thousands of barrels) [Member]

Natural Gas (in billions of BTUs) [Member]

Crude Oil (in thousands of barrels) [Member]

Crude Oil (in thousands of barrels) [Member]

Crude Oil (in thousands of barrels) [Member]

Crude Oil (in thousands of barrels) [Member]

Crude Oil (in thousands of barrels) [Member]

Natural Gas (in billions of BTUs) [Member]

Crude Oil (in thousands of barrels) [Member]

Natural Gas (in billions of BTUs) [Member]

Crude Oil (in thousands of barrels) [Member]

Crude Oil (in thousands of barrels) [Member]

MBbls

MBbls

MBbls

MBbls

bu

lb

MBbls

bu

lb

MBbls

bu

lb

MBbls

bu

lb

bu

bu

MBbls

MBbls

MBbls

MBbls

MBbls

MMBTU

MBbls

MMBTU

MBbls

MMBTU

MBbls

MMBTU

MBbls

MBbls

MBbls

MBbls

MBbls

MMBTU

MBbls

MMBTU

MBbls

MBbls

Volume of Outstanding Contracts

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Nonmonetary notional amount of price risk derivatives

'

'

'

'

'

'

0

6,006

2,793

3,213

89,761

20,770,000

115,440,000

39

5,000

0

108,422

43,805,000

212,520,000

1

3,415,000

0

24,339,000

3,405,000

10,145

0

10,286

30

96,138

250,000

16,519

1,800,000

95,818

750,000

16,194

0

10,650

120

10,650

120

700

500,000

0

0

1,150

0

Price Risk Management Activities (Textual)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Monetary notional amount of derivative liabilities

'

'

'

'

$692

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Foreign currency commitments maturity date

'

'

'

'

'

31-Jul-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Compliance program costs

$91

$137

$183

$267

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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Price_Risk_Management_Activiti3

Price Risk Management Activities, Hedging Instruments by Consolidated Balance Sheet Location (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Values of Derivative Instruments	'	'
Total derivative assets, net	$1,210	$537
Total derivative liabilities, net	1,316	529
Designated as Hedging Instrument [Member] | Future [Member] | Commodity Contract [Member] | Trade Accounts Receivable [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative asset, fair value, gross asset	3	25
Derivative asset, fair value, gross liability	2	36
Not Designated as Hedging Instrument [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative asset, fair value, gross asset	1,207	512
Derivative liability, fair value, gross liability	1,314	493
Not Designated as Hedging Instrument [Member] | Future [Member] | Commodity Contract [Member] | Trade Accounts Receivable [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative asset, fair value, gross asset	1,179	474
Derivative asset, fair value, gross liability	1,258	455
Not Designated as Hedging Instrument [Member] | Swap [Member] | Commodity Contract [Member] | Trade Accounts Receivable [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative asset, fair value, gross asset	26	33
Derivative asset, fair value, gross liability	29	18
Not Designated as Hedging Instrument [Member] | Swap [Member] | Commodity Contract [Member] | Accrued Liabilities [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative liability, fair value, gross asset	2	0
Derivative liability, fair value, gross liability	3	5
Not Designated as Hedging Instrument [Member] | Swap [Member] | Commodity Contract [Member] | Prepaid Expenses and Other Current Assets [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative asset, fair value, gross asset	'	3
Derivative asset, fair value, gross liability	'	0
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member] | Physical Purchase Contracts [Member] | Inventories [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative asset, fair value, gross asset	0	0
Derivative asset, fair value, gross liability	11	5
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member] | Foreign Currency Contract [Member] | Accrued Liabilities [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative liability, fair value, gross asset	0	0
Derivative liability, fair value, gross liability	13	8
Not Designated as Hedging Instrument [Member] | Options Held [Member] | Commodity Contract [Member] | Trade Accounts Receivable [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative asset, fair value, gross asset	'	2
Derivative asset, fair value, gross liability	'	$2

Price_Risk_Management_Activiti4

Price Risk Management Activities, Gain (Loss) by Income Statement Location (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Price Risk Management Activities (Textual)	'	'	'	'
Accumulated other comprehensive income, cumulative after-tax gains on cash flow hedges	$0	'	$0	'
Fair Value Hedging [Member] | Commodity Contract [Member] | Cost of Sales [Member]	'	'	'	'
Effect of Derivative Instruments on Income and OCI	'	'	'	'
Gain (loss) recognized in income on derivatives	5	-20	-26	-21
Gain (loss) recognized in income on hedged item	-5	22	25	22
Gain (loss) recognized in income on derivatives (ineffective portion)	0	2	-1	1
Cash Flow Hedging [Member] | Commodity Contract [Member]	'	'	'	'
Effect of Derivative Instruments on Income and OCI	'	'	'	'
Gain (loss) recognized in OCI on derivatives (effective portion)	-3	-10	4	-9
Cash Flow Hedging [Member] | Commodity Contract [Member] | Cost of Sales [Member]	'	'	'	'
Effect of Derivative Instruments on Income and OCI	'	'	'	'
Gain (loss) reclassified from accumulated OCI into income (effective portion)	0	-8	3	-5
Gain (loss) recognized in income on derivatives (ineffective portion)	3	-2	-1	-3
Economic Hedging [Member]	'	'	'	'
Effect of Derivative Instruments on Income and OCI	'	'	'	'
Gain (loss) recognized in income on derivatives	-168	257	-155	317
Economic Hedging [Member] | Commodity Contract [Member] | Cost of Sales [Member]	'	'	'	'
Effect of Derivative Instruments on Income and OCI	'	'	'	'
Gain (loss) recognized in income on derivatives	-136	246	-132	281
Economic Hedging [Member] | Foreign Currency Contract [Member] | Cost of Sales [Member]	'	'	'	'
Effect of Derivative Instruments on Income and OCI	'	'	'	'
Gain (loss) recognized in income on derivatives	-32	11	-23	36
Trading Derivatives [Member]	'	'	'	'
Effect of Derivative Instruments on Income and OCI	'	'	'	'
Gain (loss) recognized in income on derivatives	4	-4	3	-15
Trading Derivatives [Member] | Commodity Contract [Member] | Cost of Sales [Member]	'	'	'	'
Effect of Derivative Instruments on Income and OCI	'	'	'	'
Gain (loss) recognized in income on derivatives	4	3	3	5
Trading Derivatives [Member] | RINs Fixed-Price Contracts [Member] | Cost of Sales [Member]	'	'	'	'
Effect of Derivative Instruments on Income and OCI	'	'	'	'
Gain (loss) recognized in income on derivatives	$0	($7)	$0	($20)