Valero Energy (VLO) 10-Q 8 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014	Apr. 30, 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	31-Mar-14	'
Amendment Flag	'false	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
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	'	533,624,161

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Current assets:	'	'
Cash and temporary cash investments	$3,647	$4,292
Receivables, net	7,783	8,751
Inventories	7,106	5,758
Income taxes receivable	104	72
Deferred income taxes	256	266
Prepaid expenses and other	134	138
Total current assets	19,030	19,277
Property, plant, and equipment, at cost	34,235	33,933
Accumulated depreciation	-8,469	-8,226
Property, plant, and equipment, net	25,766	25,707
Deferred charges and other assets, net	2,303	2,276
Total assets	47,099	47,260
Current liabilities:	'	'
Current portion of debt and capital lease obligations	704	303
Accounts payable	9,617	9,931
Accrued expenses	488	522
Taxes other than income taxes	1,139	1,345
Income taxes payable	667	773
Deferred income taxes	311	249
Total current liabilities	12,926	13,123
Debt and capital lease obligations, less current portion	5,860	6,261
Deferred income taxes	6,615	6,601
Other long-term liabilities	1,290	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	7,134	7,187
Treasury stock, at cost; 140,081,386 and 137,932,138 common shares	-7,168	-7,054
Retained earnings	19,665	18,970
Accumulated other comprehensive income	277	350
Total Valero Energy Corporation stockholders’ equity	19,915	19,460
Noncontrolling interests	493	486
Total equity	20,408	19,946
Total liabilities and equity	$47,099	$47,260

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 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	140,081,386	137,932,138

Consolidated_Statements_of_Inc

Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Operating revenues	$33,663	$33,474
Costs and expenses:	'	'
Cost of sales	30,630	30,685
Operating expenses:	'	'
Refining	973	876
Retail	0	169
Ethanol	129	77
General and administrative expenses	160	176
Depreciation and amortization expense	421	430
Total costs and expenses	32,313	32,413
Operating income	1,350	1,061
Other income, net	15	14
Interest and debt expense, net of capitalized interest	-100	-83
Income before income tax expense	1,265	992
Income tax expense	429	340
Net income	836	652
Less: Net income (loss) attributable to noncontrolling interests	8	-2
Net income attributable to Valero Energy Corporation stockholders	$828	$654
Earnings per common share	$1.55	$1.18
Weighted-average common shares outstanding (in millions)	531	550
Earnings per common share – assuming dilution	$1.54	$1.18
Weighted-average common shares outstanding – assuming dilution (in millions)	536	556
Dividends per common share	$0.25	$0.20

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Net income	$836	$652
Other comprehensive income (loss):	'	'
Foreign currency translation adjustment	-74	-204
Net gain (loss) on pension and other postretirement benefits	-2	336
Net gain (loss) on derivative instruments designated and qualifying as cash flow hedges	4	-2
Other comprehensive income (loss) before income tax expense	-72	130
Income tax expense related to items of other comprehensive income (loss)	1	117
Other comprehensive income (loss)	-73	13
Comprehensive income	763	665
Less: Comprehensive income (loss) attributable to noncontrolling interests	8	-2
Comprehensive income attributable to Valero Energy Corporation stockholders	$755	$667

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:	'	'
Net income	$836	$652
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization expense	421	430
Deferred income tax expense	88	173
Changes in current assets and current liabilities	-1,088	255
Changes in deferred charges and credits and other operating activities, net	-13	39
Net cash provided by operating activities	244	1,549
Cash flows from investing activities:	'	'
Capital expenditures	-388	-577
Deferred turnaround and catalyst costs	-129	-287
Other investing activities, net	-41	4
Net cash used in investing activities	-558	-860
Cash flows from financing activities:	'	'
Repayment of debt	0	-180
Proceeds from the exercise of stock options	24	38
Purchase of common stock for treasury	-226	-304
Common stock dividends	-133	-111
Contributions from noncontrolling interests	0	13
Distributions to public unitholders of Valero Energy Partners LP	-1	0
Other financing activities, net	24	22
Net cash used in financing activities	-312	-522
Effect of foreign exchange rate changes on cash	-19	-33
Net increase (decrease) in cash and temporary cash investments	-645	134
Cash and temporary cash investments at beginning of period	4,292	1,723
Cash and temporary cash investments at end of period	$3,647	$1,857

Basis_of_Presentation_and_Summ

Basis of Presentation and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 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 months ended March 31, 2014 and 2013 included in these Condensed Notes to Consolidated Financial Statements is derived from our unaudited financial statements. Operating results for the three months ended March 31, 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.
	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 Pronouncement
	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.

Valero_Energy_Partners_LP

Valero Energy Partners LP	3 Months Ended
	Mar. 31, 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. VLP’s assets include 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 March 31, 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 $384 million and $375 million as of March 31, 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 March 31, 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 where VLP provides commercial transportation and terminaling services to us. These transactions are eliminated in consolidation.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2014
Inventory Disclosure [Abstract]	'
INVENTORIES	'
	3	INVENTORIES
	Inventories consisted of the following (in millions):
		March 31,		December 31,
		2014		2013
	Refinery feedstocks	$	3,500	$	2,135
	Refined products and blendstocks	3,129		3,231
	Ethanol feedstocks and products	247		166
	Materials and supplies	230		226
	Inventories	$	7,106	$	5,758
	As of March 31, 2014 and December 31, 2013, the replacement cost (market value) of last in, first out (LIFO) inventories exceeded their LIFO carrying amounts by approximately $7.1 billion and $6.9 billion, respectively. As of March 31, 2014 and December 31, 2013, our non-LIFO inventories accounted for $924 million and $851 million, respectively, of our total inventories.

Debt

Debt	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
DEBT	'
	4	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 March 31, 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. VLP has the option to increase the aggregate commitments under the VLP Revolver to $500 million, subject to, among other things, the consent of the existing lenders whose commitments will be increased or any additional lenders providing such additional capacity. VLP’s obligations under the VLP Revolver will be jointly and severally guaranteed by all of VLP’s directly owned material subsidiaries. As of March 31, 2014 and December 31, 2013, the only guarantor under the VLP Revolver was Valero Partners Operating Co. LLC, a wholly owned subsidiary of VLP. The VLP Revolver has certain restrictive covenants, including a ratio of total debt to EBITDA (as defined in the VLP Revolver) for the prior four fiscal quarters of not greater than 5.0 to 1.0 as of the last day of each fiscal quarter, and limitations on VLP’s ability to pay distributions to its unitholders. As of March 31, 2014, VLP’s debt to EBITDA ratio, calculated in accordance with the terms of the VLP Revolver, was 0.1 to 1.0. We believe that VLP will remain in compliance with this covenant.
	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 three months ended March 31, 2014 and 2013, we had no borrowings or repayments under the Revolver, the VLP Revolver, or our Canadian revolving credit facility. As of March 31, 2014 and December 31, 2013, we had no borrowings outstanding under the Revolver, the VLP Revolver, or our Canadian revolving credit facility.
	We had outstanding letters of credit under our committed lines of credit as follows (in millions):
						Amounts Outstanding
			Borrowing		Expiration	March 31,		December 31,
			Capacity			2014		2013
	Letter of credit facilities		$	550	June 2014	$	258	$	278
	Revolver		$	3,000	Nov-18	$	59	$	59
	VLP Revolver		$	300	December 2018	$	—	$	—
	Canadian revolving credit facility		C$	50	November 2014	C$	10	C$	10
	As of March 31, 2014 and December 31, 2013, we had $414 million and $189 million, respectively, of letters of credit outstanding under our uncommitted short-term bank credit facilities.
	Non-Bank Debt
	We made no scheduled debt repayments during the three months ended March 31, 2014, but we made a scheduled debt repayment of $200 million related to our 4.75% senior notes in April 2014. During the three months ended March 31, 2013, we made a scheduled debt repayment of $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 2013, we amended this facility to extend the maturity date to July 2014. 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 three months ended March 31, 2014 and 2013, we had no proceeds from or repayments under our accounts receivable sales facility. As of March 31, 2014 and December 31, 2013, we had $100 million outstanding under our accounts receivable sales facility.
	Capitalized Interest
	Capitalized interest was $17 million and $40 million for the three months ended March 31, 2014 and 2013, respectively.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]	'
COMMITMENTS AND CONTINGENCIES	'
	5	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 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 Environmental Protection Agency 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.
	Aruba Refinery
	During 2012, we suspended the operations of the Aruba Refinery and recognized an impairment loss with respect to all of the refinery’s long-lived assets, except for certain terminal assets that we continue to operate. We have not, however, abandoned the refinery. Should we ultimately decide to abandon the refinery, we may be required under our land lease agreement with the Government of Aruba to dismantle and remove the abandoned assets. This would require us to recognize an asset retirement obligation that would be charged to expense. We do not expect these amounts to be material to our financial position or results of operations.

Equity

Equity	3 Months Ended
	Mar. 31, 2014
Equity [Abstract]	'
EQUITY	'
	6	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):
			Three Months Ended March 31,
			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)		828				8				836				654				(2		)		652
	Dividends		(133		)		—				(133		)		(111		)		—				(111		)
	Stock-based		10				—				10				11				—				11
	compensation expense
	Tax deduction in excess		25				—				25				24				—				24
	of stock-based
	compensation expense
	Transactions
	in connection with
	stock-based
	compensation plans:
	Stock issuances		24				—				24				38				—				38
	Stock repurchases		(17		)		—				(17		)		(24		)		—				(24		)
	Stock repurchases under		(209		)		—				(209		)		(294		)		—				(294		)
	buyback program
	Contributions from		—				—				—				—				14				14
	noncontrolling interests
	Distributions to public		—				(1		)		(1		)		—				—				—
	unitholders of
	Valero Energy Partners LP
	Other comprehensive		(73		)		—				(73		)		13				—				13
	income (loss)
	Balance as of end of period		$	19,915			$	493			$	20,408			$	18,343			$	75			$	18,418
	The noncontrolling interests relate to third-party ownership interests in VLP and two 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):
		Three Months Ended March 31,
		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	—			—			—			—
	Stock repurchases under buyback program	—			(4	)		—			(7	)
	Balance as of end of period	673			(140	)		673			(125	)
	Common Stock Dividends
	On May 1, 2014, our board of directors declared a quarterly cash dividend of $0.25 per common share payable on June 18, 2014 to holders of record at the close of business on May 21, 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 March 31,
		2014												2013
		Before-Tax Amount				Tax Expense (Benefit)				Net Amount				Before-Tax Amount				Tax Expense (Benefit)				Net Amount
	Foreign currency translation adjustment	$	(74	)		$	—			$	(74	)		$	(204	)		$	—			$	(204	)
	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	8				3				5				14				5				9
	Prior service credit	(10		)		(3		)		(7		)		(6		)		(2		)		(4		)
	Net gain (loss) on pension and other	(2		)		—				(2		)		336				118				218
	postretirement benefits
Derivative instruments designated and
qualifying as cash flow hedges:
Net gain arising during the period	7				2				5				1				—				1
Net gain reclassified into income	(3		)		(1		)		(2		)		(3		)		(1		)		(2		)
Net gain (loss) on cash flow hedges	4				1				3				(2		)		(1		)		(1		)
Other comprehensive income (loss)	$	(72	)		$	1			$	(73	)		$	130			$	117			$	13
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				Pension				Cash Flow
	Adjustment				Items				Hedges
Balance as of December 31, 2013	$	408			$	(58	)		$	—			$	350
Other comprehensive income (loss)	(74		)		—				5				(69		)
before reclassifications
Amounts reclassified from	—				(2		)		(2		)		(4		)
accumulated other comprehensive income
Net other comprehensive income (loss)	(74		)		(2		)		3				(73		)
Balance as of March 31, 2014	$	334			$	(60	)		$	3			$	277
	Foreign				Defined				Gains and				Total
	Currency				Benefit				(Losses) on
	Translation				Pension				Cash Flow
	Adjustment				Items				Hedges
Balance as of December 31, 2012	$	665			$	(558	)		$	1			$	108
Other comprehensive income (loss)	(204		)		213				1				10
before reclassifications
Amounts reclassified from	—				5				(2		)		3
accumulated other comprehensive income
Net other comprehensive income (loss)	(204		)		218				(1		)		13
Balance as of March 31, 2013	$	461			$	(340	)		$	—			$	121
Amounts reclassified out of accumulated other comprehensive income (loss) and into net income were as follows (in millions):
	Details about										Affected Line
	Accumulated Other										Item in the
	Comprehensive Income		Three Months Ended March 31,								Statement of
	Components		2014				2013				Income
	Amortization of items related to
	defined benefit pension plans:
	Net actuarial loss		$	(8	)		$	(14	)		(a)
	Prior service credit		10				6				(a)
			2				(8		)		Total before tax
			—				3				Tax benefit
			$	2			$	(5	)		Net of tax
	Gains on cash flow hedges:
	Commodity contracts		$	3			$	3			Cost of sales
			3				3				Total before tax
			(1		)		(1		)		Tax expense
			$	2			$	2			Net of tax
	Total reclassifications for the period		$	4			$	(3	)		Net of tax
_________________________
(a)	These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost, as further discussed in Note 7. Net periodic benefit cost is reflected in operating expenses and general and administrative expenses.

Employee_Benefit_Plans

Employee Benefit Plans	3 Months Ended
	Mar. 31, 2014
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]	'
EMPLOYEE BENEFIT PLANS	'
	7	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 March 31:
	Service cost	$	30		$	36		$	2		$	3
	Interest cost	23			22			4			4
	Expected return on plan assets	(33		)	(32		)	—			—
	Amortization of:
	Prior service credit	(5		)	(3		)	(5		)	(3		)
	Net actuarial loss	8			14			—			—
	Net periodic benefit cost	$	23		$	37		$	1		$	4
	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 three months ended March 31, 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 $10 million and $8 million, respectively, to our pension plans and $4 million and $4 million, respectively, to our other postretirement benefit plans during the three months ended March 31, 2014 and 2013.

Earnings_Per_Common_Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
EARNINGS PER COMMON SHARE	'
	8	EARNINGS PER COMMON SHARE
	Earnings per common share were computed as follows (dollars and shares in millions, except per share amounts):
		Three Months Ended March 31,
		2014					2013
		Restricted			Common		Restricted		Common
		Stock			Stock		Stock		Stock
	Earnings per common share:
	Net income attributable to Valero stockholders				$	828			$	654
	Less dividends paid:
	Common stock				132				110
	Nonvested restricted stock				1				1
	Undistributed earnings				$	695			$	543
	Weighted-average common shares outstanding	2			531		3		550
	Earnings per common share:
	Distributed earnings	$	0.25		$	0.25	$	0.2	$	0.2
	Undistributed earnings	1.3			1.3		0.98		0.98
	Total earnings per common share	$	1.55		$	1.55	$	1.18	$	1.18
	Earnings per common share –
	assuming dilution:
	Net income attributable to Valero stockholders				$	828			$	654
	Weighted-average common shares outstanding				531				550
	Common equivalent shares:
	Stock options				3				4
	Performance awards and				2				2
	nonvested restricted stock
	Weighted-average common shares outstanding –				536				556
	assuming dilution
	Earnings per common share – assuming dilution				$	1.54			$	1.18
	The following table reflects potentially dilutive securities (in millions) that were excluded from the calculation of “earnings per common share – 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
		March 31,
		2014		2013
	Stock options	1		3

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
SEGMENT INFORMATION	'
	9	SEGMENT INFORMATION
	In May 2013, we completed the separation of our retail business, creating an independent public company named CST Brands, Inc. (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 (our former retail business), 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 March 31, 2014:
	Operating revenues from external		$	32,452		$	1,211	$	—	$	—		$	33,663
	customers
	Intersegment revenues		—			25		—		—			25
	Operating income (loss)		1,279			243		—		(172		)	1,350
	Three months ended March 31, 2013:
	Operating revenues from external		29,553			1,004		2,917		—			33,474
	customers
	Intersegment revenues		2,205			55		—		—			2,260
	Operating income (loss)		1,212			14		42		(207		)	1,061
	Total assets by reportable segment were as follows (in millions):
		March 31,			December 31,
		2014			2013
	Refining	$	41,235		$	40,834
	Ethanol	1,003			889
	Corporate	4,861			5,537
	Total assets	$	47,099		$	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	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Information [Abstract]	'
SUPPLEMENTAL CASH FLOW INFORMATION	'
	10	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):
		Three Months Ended
		March 31,
		2014			2013
	Decrease (increase) in current assets:
	Receivables, net	$	958		$	409
	Inventories	(1,356		)	(1,074		)
	Income taxes receivable	(31		)	79
	Prepaid expenses and other	—			(233		)
	Increase (decrease) in current liabilities:
	Accounts payable	(299		)	561
	Accrued expenses	(50		)	181
	Taxes other than income taxes	(198		)	318
	Income taxes payable	(112		)	14
	Changes in current assets and current liabilities	$	(1,088	)	$	255
	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;
	•	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 or financing activities for the three months ended March 31, 2014 and 2013.
	Cash flows related to interest and income taxes were as follows (in millions):
		Three Months Ended
		March 31,
		2014			2013
	Interest paid in excess of amount capitalized	$	74		$	56
	Income taxes paid, net	459			48

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
FAIR VALUE MEASUREMENTS	'
	11	FAIR VALUE MEASUREMENTS
	General
	GAAP requires that certain assets and liabilities be measured at fair value on a recurring or nonrecurring basis in our balance sheets, which are presented below under “Recurring Fair Value Measurements” and “Nonrecurring Fair Value Measurements.” Recurring fair value measurements of assets or liabilities are those that GAAP requires or permits in the balance sheet at the end of each reporting period, such as derivative financial instruments. Nonrecurring fair value measurements of assets or liabilities are those that GAAP requires or permits in the balance sheet in particular circumstances, such as the impairment of property, plant and equipment.
	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.”
	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 March 31, 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.
		March 31, 2014
								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	$	709	$	163	$	—	$	872	$	(759	)	$	(24	)	$	89	$	—
	contracts
	Physical purchase	—		2		—		2		n/a			n/a			2		n/a
	contracts
	Investments of certain	99		—		11		110		n/a			n/a			110		n/a
	benefit plans
	Total	$	808	$	165	$	11	$	984	$	(759	)	$	(24	)	$	201
	Liabilities:
	Commodity derivative	$	643	$	149	$	—	$	792	$	(759	)	$	(31	)	$	2	$	(66	)
	contracts
	Biofuels blending	—		75		—		75		n/a			n/a			75		n/a
	obligation
	Physical purchase	—		1		—		1		n/a			n/a			1		n/a
	contracts
	Foreign currency	9		—		—		9		n/a			n/a			9		n/a
	contracts
	Total	$	652	$	225	$	—	$	877	$	(759	)	$	(31	)	$	87
		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 12, 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 12, 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 12 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 March 31, 2014 and December 31, 2013 that were measured at fair value on a recurring basis.
	There was no activity during the three months ended March 31, 2014 and 2013 related to the fair value amounts categorized in Level 3 as of March 31, 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 March 31, 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):
	March 31, 2014				December 31, 2013
	Carrying		Fair		Carrying		Fair
	Amount		Value		Amount		Value
Financial assets:
Cash and temporary cash investments	$	3,647	$	3,647	$	4,292	$	4,292
Financial liabilities:
Debt (excluding capital leases)	6,526		7,883		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	3 Months Ended
	Mar. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
PRICE RISK MANAGEMENT ACTIVITIES	'
	12	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 11), 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 March 31, 2014, we had the following outstanding commodity derivative instruments that were entered into to hedge crude oil and refined product inventories and commodity derivative instruments related to the physical purchase of crude oil and refined products 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).
			Notional
			Contract
			Volumes by
			Year of
			Maturity
	Derivative Instrument		2014
	Crude oil and refined products:
	Futures – long		2,229
	Futures – short		2,905
	Physical contracts – long		676
	•	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 March 31, 2014, we had the following outstanding commodity derivative instruments that were entered into to hedge forecasted purchases or sales of crude oil and 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		13,578
	Futures – short		10,312
	Physical contracts – short		3,266
	•	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 March 31, 2014, we had the following outstanding commodity derivative instruments that were used as economic hedges and 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		10,260			—
	Swaps – short		10,551			—
	Futures – long		68,833			14
	Futures – short		95,621			—
	Corn:
	Futures – long		12,085			—
	Futures – short		32,130			2,075
	Physical contracts – long		16,957			2,157
	Soybean oil:
	Futures – short		99,540			—
	•	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 March 31, 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 and corn contracts that are presented in thousands of bushels).
			Notional Contract Volumes by
			Year of Maturity
	Derivative Instrument		2014			2015
	Crude oil and refined products:
	Swaps – long		17,760			—
	Swaps – short		17,760			—
	Futures – long		97,715			8,940
	Futures – short		97,631			8,940
	Options – long		12,700			—
	Options – short		13,150			—
	Natural gas:
	Futures – long		1,000			1,500
	Futures – short		750			—
Options – long		500			—
Corn:
Futures – long		145			—
Futures – short		145			—
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 March 31, 2014 or December 31, 2013, or during the three months ended March 31, 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 March 31, 2014, we had commitments to purchase $999 million of U.S. dollars. The majority of these commitments matured on or before April 30, 2014, resulting in an immaterial loss in the second 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 $92 million and $130 million for the three months ended March 31, 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 March 31, 2014 and December 31, 2013 (in millions) and the line items in the balance sheets in which the fair values are reflected. See Note 11 for additional information related to the fair values of our derivative instruments.
As indicated in Note 11, 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		March 31, 2014
	Location		Asset				Liability
			Derivatives				Derivatives
Derivatives designated as
hedging instruments
Commodity contracts:
Futures	Receivables, net		$	19			$	23
Derivatives not designated as
hedging instruments
Commodity contracts:
Futures	Receivables, net		$	690			$	620
Swaps	Receivables, net		159				142
Swaps	Accrued expenses		3				5
Options	Receivables, net		1				2
Physical purchase contracts	Inventories		2				1
Foreign currency contracts	Accrued expenses		—				9
Total			$	855			$	779
Total derivatives			$	874			$	802
	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 March 31, 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
Hedging Relationships		Recognized in Income		March 31,
		on Derivatives		2014				2013
Commodity contracts:
Loss recognized in		Cost of sales		$	(31	)		$	(1	)
income on derivatives
Gain recognized in		Cost of sales		30				—
income on hedged item
Loss recognized in		Cost of sales		(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 months ended March 31, 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 months ended March 31, 2014 and 2013.
Derivatives in Cash Flow		Location of Gain (Loss)		Three Months Ended
Hedging Relationships		Recognized in Income		March 31,
		on Derivatives		2014				2013
Commodity contracts:
Gain recognized in				$	7			$	1
OCI on derivatives
(effective portion)
Gain reclassified from		Cost of sales		3				3
accumulated OCI into
income (effective
portion)
Loss recognized in		Cost of sales		(4		)		(1		)
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 months ended March 31, 2014 and 2013. For the three months ended March 31, 2014, cash flow hedges primarily related to forward purchases of crude oil, with $3 million of cumulative after-tax gains on cash flow hedges remaining in accumulated other comprehensive income. We estimate that this deferred gain will be reclassified into cost of sales over the next 12 months as a result of hedged transactions that are forecasted to occur. For the three months ended March 31, 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		Three Months Ended
Economic Hedges		Recognized in		March 31,
and Other		Income on Derivatives
Derivative Instruments				2014				2013
Commodity contracts		Cost of sales		$	4			$	35
Foreign currency contracts		Cost of sales		9				25
Total				$	13			$	60
Trading Derivatives		Location of Gain (Loss)		Three Months Ended
		Recognized in		March 31,
		Income on Derivatives		2014				2013
Commodity contracts		Cost of sales		$	(1	)		$	2
RINs fixed-price contracts		Cost of sales		—				(13		)
Total				$	(1	)		$	(11	)

Basis_of_Presentation_and_Summ1

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 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 months ended March 31, 2014 and 2013 included in these Condensed Notes to Consolidated Financial Statements is derived from our unaudited financial statements. Operating results for the three months ended March 31, 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.
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 11), 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.

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Mar. 31, 2014
Inventory Disclosure [Abstract]	'
Schedule of inventories	'
	Inventories consisted of the following (in millions):
		March 31,		December 31,
		2014		2013
	Refinery feedstocks	$	3,500	$	2,135
	Refined products and blendstocks	3,129		3,231
	Ethanol feedstocks and products	247		166
	Materials and supplies	230		226
	Inventories	$	7,106	$	5,758

Debt_Tables

Debt (Tables)	3 Months Ended
	Mar. 31, 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	March 31,		December 31,
		Capacity			2014		2013
	Letter of credit facilities	$	550	June 2014	$	258	$	278
	Revolver	$	3,000	Nov-18	$	59	$	59
	VLP Revolver	$	300	December 2018	$	—	$	—
	Canadian revolving credit facility	C$	50	November 2014	C$	10	C$	10

Equity_Tables

Equity (Tables)	3 Months Ended
	Mar. 31, 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):
			Three Months Ended March 31,
			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)		828				8				836				654				(2		)		652
	Dividends		(133		)		—				(133		)		(111		)		—				(111		)
	Stock-based		10				—				10				11				—				11
	compensation expense
	Tax deduction in excess		25				—				25				24				—				24
	of stock-based
	compensation expense
	Transactions
	in connection with
	stock-based
	compensation plans:
	Stock issuances		24				—				24				38				—				38
	Stock repurchases		(17		)		—				(17		)		(24		)		—				(24		)
	Stock repurchases under		(209		)		—				(209		)		(294		)		—				(294		)
	buyback program
	Contributions from		—				—				—				—				14				14
	noncontrolling interests
	Distributions to public		—				(1		)		(1		)		—				—				—
	unitholders of
	Valero Energy Partners LP
	Other comprehensive		(73		)		—				(73		)		13				—				13
	income (loss)
	Balance as of end of period		$	19,915			$	493			$	20,408			$	18,343			$	75			$	18,418
Schedule of stock by class	'
	Activity in the number of shares of common stock and treasury stock was as follows (in millions):
		Three Months Ended March 31,
		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	—			—			—			—
	Stock repurchases under buyback program	—			(4	)		—			(7	)
	Balance as of end of period	673			(140	)		673			(125	)
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 March 31,
		2014												2013
		Before-Tax Amount				Tax Expense (Benefit)				Net Amount				Before-Tax Amount				Tax Expense (Benefit)				Net Amount
	Foreign currency translation adjustment	$	(74	)		$	—			$	(74	)		$	(204	)		$	—			$	(204	)
	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	8				3				5				14				5				9
	Prior service credit	(10		)		(3		)		(7		)		(6		)		(2		)		(4		)
	Net gain (loss) on pension and other	(2		)		—				(2		)		336				118				218
	postretirement benefits
	Derivative instruments designated and
	qualifying as cash flow hedges:
	Net gain arising during the period	7				2				5				1				—				1
	Net gain reclassified into income	(3		)		(1		)		(2		)		(3		)		(1		)		(2		)
	Net gain (loss) on cash flow hedges	4				1				3				(2		)		(1		)		(1		)
	Other comprehensive income (loss)	$	(72	)		$	1			$	(73	)		$	130			$	117			$	13
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				Pension				Cash Flow
		Adjustment				Items				Hedges
	Balance as of December 31, 2013	$	408			$	(58	)		$	—			$	350
	Other comprehensive income (loss)	(74		)		—				5				(69		)
	before reclassifications
	Amounts reclassified from	—				(2		)		(2		)		(4		)
	accumulated other comprehensive income
	Net other comprehensive income (loss)	(74		)		(2		)		3				(73		)
	Balance as of March 31, 2014	$	334			$	(60	)		$	3			$	277
		Foreign				Defined				Gains and				Total
		Currency				Benefit				(Losses) on
		Translation				Pension				Cash Flow
		Adjustment				Items				Hedges
	Balance as of December 31, 2012	$	665			$	(558	)		$	1			$	108
	Other comprehensive income (loss)	(204		)		213				1				10
	before reclassifications
	Amounts reclassified from	—				5				(2		)		3
	accumulated other comprehensive income
	Net other comprehensive income (loss)	(204		)		218				(1		)		13
	Balance as of March 31, 2013	$	461			$	(340	)		$	—			$	121
Reclassification out of accumulated other comprehensive income (loss)	'
	Amounts reclassified out of accumulated other comprehensive income (loss) and into net income were as follows (in millions):
		Details about										Affected Line
		Accumulated Other										Item in the
		Comprehensive Income		Three Months Ended March 31,								Statement of
		Components		2014				2013				Income
		Amortization of items related to
		defined benefit pension plans:
		Net actuarial loss		$	(8	)		$	(14	)		(a)
		Prior service credit		10				6				(a)
				2				(8		)		Total before tax
				—				3				Tax benefit
				$	2			$	(5	)		Net of tax
		Gains on cash flow hedges:
		Commodity contracts		$	3			$	3			Cost of sales
				3				3				Total before tax
				(1		)		(1		)		Tax expense
				$	2			$	2			Net of tax
		Total reclassifications for the period		$	4			$	(3	)		Net of tax
	_________________________
	(a)	These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost, as further discussed in Note 7. Net periodic benefit cost is reflected in operating expenses and general and administrative expenses.

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 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 March 31:
	Service cost	$	30		$	36		$	2		$	3
	Interest cost	23			22			4			4
	Expected return on plan assets	(33		)	(32		)	—			—
	Amortization of:
	Prior service credit	(5		)	(3		)	(5		)	(3		)
	Net actuarial loss	8			14			—			—
	Net periodic benefit cost	$	23		$	37		$	1		$	4

Earnings_Per_Common_Share_Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 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 March 31,
		2014					2013
		Restricted			Common		Restricted		Common
		Stock			Stock		Stock		Stock
	Earnings per common share:
	Net income attributable to Valero stockholders				$	828			$	654
	Less dividends paid:
	Common stock				132				110
	Nonvested restricted stock				1				1
	Undistributed earnings				$	695			$	543
	Weighted-average common shares outstanding	2			531		3		550
	Earnings per common share:
	Distributed earnings	$	0.25		$	0.25	$	0.2	$	0.2
	Undistributed earnings	1.3			1.3		0.98		0.98
	Total earnings per common share	$	1.55		$	1.55	$	1.18	$	1.18
	Earnings per common share –
	assuming dilution:
	Net income attributable to Valero stockholders				$	828			$	654
	Weighted-average common shares outstanding				531				550
	Common equivalent shares:
	Stock options				3				4
	Performance awards and				2				2
	nonvested restricted stock
	Weighted-average common shares outstanding –				536				556
	assuming dilution
	Earnings per common share – assuming dilution				$	1.54			$	1.18
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 – 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
		March 31,
		2014		2013
	Stock options	1		3

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 31, 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 March 31, 2014:
	Operating revenues from external		$	32,452		$	1,211	$	—	$	—		$	33,663
	customers
	Intersegment revenues		—			25		—		—			25
	Operating income (loss)		1,279			243		—		(172		)	1,350
	Three months ended March 31, 2013:
	Operating revenues from external		29,553			1,004		2,917		—			33,474
	customers
	Intersegment revenues		2,205			55		—		—			2,260
	Operating income (loss)		1,212			14		42		(207		)	1,061
	Total assets by reportable segment were as follows (in millions):
		March 31,			December 31,
		2014			2013
	Refining	$	41,235		$	40,834
	Ethanol	1,003			889
	Corporate	4,861			5,537
	Total assets	$	47,099		$	47,260

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information (Tables)	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Information [Abstract]	'
Changes in current assets and current liabilities	'
	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):
		Three Months Ended
		March 31,
		2014			2013
	Decrease (increase) in current assets:
	Receivables, net	$	958		$	409
	Inventories	(1,356		)	(1,074		)
	Income taxes receivable	(31		)	79
	Prepaid expenses and other	—			(233		)
	Increase (decrease) in current liabilities:
	Accounts payable	(299		)	561
	Accrued expenses	(50		)	181
	Taxes other than income taxes	(198		)	318
	Income taxes payable	(112		)	14
	Changes in current assets and current liabilities	$	(1,088	)	$	255
Cash flows related to interest and income taxes	'
	Cash flows related to interest and income taxes were as follows (in millions):
		Three Months Ended
		March 31,
		2014			2013
	Interest paid in excess of amount capitalized	$	74		$	56
	Income taxes paid, net	459			48

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 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 March 31, 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.
		March 31, 2014
								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	$	709	$	163	$	—	$	872	$	(759	)	$	(24	)	$	89	$	—
	contracts
	Physical purchase	—		2		—		2		n/a			n/a			2		n/a
	contracts
	Investments of certain	99		—		11		110		n/a			n/a			110		n/a
	benefit plans
	Total	$	808	$	165	$	11	$	984	$	(759	)	$	(24	)	$	201
	Liabilities:
	Commodity derivative	$	643	$	149	$	—	$	792	$	(759	)	$	(31	)	$	2	$	(66	)
	contracts
	Biofuels blending	—		75		—		75		n/a			n/a			75		n/a
	obligation
	Physical purchase	—		1		—		1		n/a			n/a			1		n/a
	contracts
	Foreign currency	9		—		—		9		n/a			n/a			9		n/a
	contracts
	Total	$	652	$	225	$	—	$	877	$	(759	)	$	(31	)	$	87
		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):
		March 31, 2014				December 31, 2013
		Carrying		Fair		Carrying		Fair
		Amount		Value		Amount		Value
	Financial assets:
	Cash and temporary cash investments	$	3,647	$	3,647	$	4,292	$	4,292
	Financial liabilities:
	Debt (excluding capital leases)	6,526		7,883		6,525		7,659

Price_Risk_Management_Activiti1

Price Risk Management Activities (Tables)	3 Months Ended
	Mar. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Volume of outstanding contracts in fair value hedges	'
	As of March 31, 2014, we had the following outstanding commodity derivative instruments that were entered into to hedge crude oil and refined product inventories and commodity derivative instruments related to the physical purchase of crude oil and refined products 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).
			Notional
			Contract
			Volumes by
			Year of
			Maturity
	Derivative Instrument		2014
	Crude oil and refined products:
	Futures – long		2,229
	Futures – short		2,905
	Physical contracts – long		676
Volume of outstanding contracts in cash flow hedges	'
	As of March 31, 2014, we had the following outstanding commodity derivative instruments that were entered into to hedge forecasted purchases or sales of crude oil and 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		13,578
	Futures – short		10,312
	Physical contracts – short		3,266
Volume of outstanding contracts in economic hedges	'
	As of March 31, 2014, we had the following outstanding commodity derivative instruments that were used as economic hedges and 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		10,260			—
	Swaps – short		10,551			—
	Futures – long		68,833			14
	Futures – short		95,621			—
	Corn:
	Futures – long		12,085			—
	Futures – short		32,130			2,075
	Physical contracts – long		16,957			2,157
	Soybean oil:
	Futures – short		99,540			—
Volume of outstanding contracts in trading activities	'
	As of March 31, 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 and corn contracts that are presented in thousands of bushels).
			Notional Contract Volumes by
			Year of Maturity
	Derivative Instrument		2014			2015
	Crude oil and refined products:
	Swaps – long		17,760			—
	Swaps – short		17,760			—
	Futures – long		97,715			8,940
	Futures – short		97,631			8,940
	Options – long		12,700			—
	Options – short		13,150			—
	Natural gas:
	Futures – long		1,000			1,500
	Futures – short		750			—
	Options – long		500			—
	Corn:
	Futures – long		145			—
	Futures – short		145			—
Fair value of derivative instruments	'
	The following tables provide information about the fair values of our derivative instruments as of March 31, 2014 and December 31, 2013 (in millions) and the line items in the balance sheets in which the fair values are reflected. See Note 11 for additional information related to the fair values of our derivative instruments.
	As indicated in Note 11, 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		March 31, 2014
		Location		Asset				Liability
				Derivatives				Derivatives
	Derivatives designated as
	hedging instruments
	Commodity contracts:
	Futures	Receivables, net		$	19			$	23
	Derivatives not designated as
	hedging instruments
	Commodity contracts:
	Futures	Receivables, net		$	690			$	620
	Swaps	Receivables, net		159				142
	Swaps	Accrued expenses		3				5
	Options	Receivables, net		1				2
	Physical purchase contracts	Inventories		2				1
	Foreign currency contracts	Accrued expenses		—				9
	Total			$	855			$	779
	Total derivatives			$	874			$	802
		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	'
	Derivatives Designated as		Location of Gain		Three Months Ended
	Economic Hedges		Recognized in		March 31,
	and Other		Income on Derivatives
	Derivative Instruments				2014				2013
	Commodity contracts		Cost of sales		$	4			$	35
	Foreign currency contracts		Cost of sales		9				25
	Total				$	13			$	60
	Derivatives in Cash Flow		Location of Gain (Loss)		Three Months Ended
	Hedging Relationships		Recognized in Income		March 31,
			on Derivatives		2014				2013
	Commodity contracts:
	Gain recognized in				$	7			$	1
	OCI on derivatives
	(effective portion)
	Gain reclassified from		Cost of sales		3				3
	accumulated OCI into
	income (effective
	portion)
	Loss recognized in		Cost of sales		(4		)		(1		)
	income on derivatives
	(ineffective portion)
	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
	Hedging Relationships		Recognized in Income		March 31,
			on Derivatives		2014				2013
	Commodity contracts:
	Loss recognized in		Cost of sales		$	(31	)		$	(1	)
	income on derivatives
	Gain recognized in		Cost of sales		30				—
	income on hedged item
	Loss recognized in		Cost of sales		(1		)		(1		)
	income on derivatives
	(ineffective portion)
	Trading Derivatives		Location of Gain (Loss)		Three Months Ended
			Recognized in		March 31,
			Income on Derivatives		2014				2013
	Commodity contracts		Cost of sales		$	(1	)		$	2
	RINs fixed-price contracts		Cost of sales		—				(13		)
	Total				$	(1	)		$	(11	)

Valero_Energy_Partners_LP_Deta

Valero Energy Partners LP (Details) (USD $)

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2013

Dec. 31, 2012

Dec. 16, 2013

Mar. 31, 2014

Dec. 31, 2013

Dec. 16, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

In Millions, except Share data, unless otherwise specified

Subsidiary Issuer [Member]

Subsidiary Issuer [Member]

Subsidiary Issuer [Member]

Subsidiary Issuer [Member]

Subsidiary Issuer [Member]

Subsidiary Issuer [Member]

Subsidiary Issuer [Member]

Subsidiary Issuer [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]

Offering [Member]

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

3,647

4,292

1,857

1,723

'

384

375

'

'

'

'

'

Noncontrolling interests

$493

$486

'

'

'

$372

$370

'

'

'

'

'

Inventories_Details

Inventories (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Schedule of Inventories	'	'
Refinery feedstocks	$3,500,000,000	$2,135,000,000
Refined products and blendstocks	3,129,000,000	3,231,000,000
Ethanol feedstocks and products	247,000,000	166,000,000
Materials and supplies	230,000,000	226,000,000
Inventories	7,106,000,000	5,758,000,000
Inventories (Textual)	'	'
Excess of market value over carrying amount of LIFO inventories	7,100,000,000	6,900,000,000
Amount of non-LIFO inventory	$924,000,000	$851,000,000

Debt_Credit_Facilities_and_Ban

Debt, Credit Facilities and Bank Debt (Details)

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 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 ($)

Maximum [Member]

USD ($)

USD ($)

CAD

CAD

CAD

CAD

CAD

quarter

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 (month, year)

'

'

'June 2014

'

'November 2018

'

'

'

'

'

'December 2018

'

'

'

'

'November 2014

'

'

'

'

Amount outstanding

414,000,000

189,000,000

258,000,000

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

'

'

'

'

'

500,000,000

'

'

'

'

'

'

'

'

'

Debt to capitalization ratios as per terms of revolver

'

'

'

'

0.14

'

0.12

0.6

'

'

'

'

'

'

'

'

'

'

'

'

Number of prior quarterly reporting periods used for debt to EBITDA ratio

'

'

'

'

'

'

'

'

'

'

4

'

'

'

'

'

'

'

'

'

Debt to EBITDA ratio as per terms of revolver

'

'

'

'

'

'

'

'

'

'

0.1

'

5

'

'

'

'

'

'

'

Borrowings from long-term lines of credit

'

'

'

'

0

0

'

'

'

'

0

'

'

'

'

0

0

'

'

'

Repayments of long-term lines of credit

'

'

'

'

$0

$0

'

'

'

'

$0

'

'

'

'

0

0

'

'

'

Debt_NonBank_Debt_Details

Debt, Non-Bank Debt (Details) (Senior Notes [Member], USD $)	3 Months Ended	1 Months Ended
	Mar. 31, 2013	Apr. 30, 2014
	Senior Notes Due In 2013 [Member]	Subsequent Event [Member]
		Senior Notes Due In 2014 [Member]
Non-Bank Debt (Textual)	'	'
Debt repayments	$180,000,000	$200,000,000
Interest rate of notes in percentage	6.70%	4.75%

Debt_Accounts_Receivable_Sales

Debt, Accounts Receivable Sales Facility and Capitalized Interest (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Capitalized Interest (Textual)	'	'	'
Interest costs incurred, capitalized	$17,000,000	$40,000,000	'
Credit Facilities [Member] | A/R Sales Facility [Member]	'	'	'
Accounts Receivable Sales Facility (Textual)	'	'	'
Line of credit facility, maximum borrowing capacity	1,500,000,000	'	'
Maturity date of accounts receivable sales facility	'July 2014	'	'
Proceeds from accounts receivable sales facility	0	0	'
Repayments under accounts receivable sales facility	0	0	'
Amount outstanding	$100,000,000	'	$100,000,000

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (USD $)	Mar. 31, 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

0 Months Ended

3 Months Ended

In Millions, except Share data, unless otherwise specified

Mar. 31, 2014

Mar. 31, 2013

1-May-14

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

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]

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)

836

652

'

828

654

'

'

'

'

8

-2

'

'

'

'

'

'

'

'

'

'

'

'

Dividends

-133

-111

'

-133

-111

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock-based compensation expense

10

11

'

10

11

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Tax deduction in excess of stock-based compensation expense

25

24

'

25

24

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Transactions in connection with stock-based compensation plans:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock issuances

24

38

'

24

38

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock repurchases

'

'

'

'

'

'

'

'

'

'

'

-17

-24

-17

-24

'

'

-209

-294

-209

-294

'

'

Contributions from noncontrolling interests

0

14

'

0

0

'

'

'

'

0

14

'

'

'

'

'

'

'

'

'

'

'

'

Distributions to public unitholders of Valero Energy Partners LP

-1

0

'

0

0

'

'

'

'

-1

0

'

'

'

'

'

'

'

'

'

'

'

'

Other comprehensive income (loss)

-73

13

'

-73

13

'

'

'

'

0

0

'

'

'

'

'

'

'

'

'

'

'

'

Balance as of end of period

$20,408

$18,418

'

$19,915

$18,343

'

'

'

'

$493

$75

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

'

'

'

'

-4,000,000

-7,000,000

Common stock, shares, ending balance

'

'

'

'

'

673,000,000

673,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Treasury stock, shares, ending balance

-140,081,386

'

'

'

'

'

'

-140,000,000

-125,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity (Textual)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividends payable, date declared

'

'

1-May-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividends payable, amount per share

'

'

$0.25

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividends payable, date to be paid

'

'

18-Jun-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividends payable, date of record

'

'

21-May-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity_Income_Tax_Effects_on_O

Equity, Income Tax Effects on Other Comprehensive Income (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Tax Effects Related to Components of Other Comprehensive Income	'	'
Foreign currency translation adjustment, before-tax amount	($74)	($204)
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	8	14
Prior service credit, before-tax amount	-10	-6
Net gain (loss) on pension and other postretirement benefits, before-tax amount	-2	336
Derivative instruments designated and qualifying as cash flow hedges:	'	'
Net gain arising during the period, before-tax amount	7	1
Net gain reclassified into income, before-tax amount	-3	-3
Net gain (loss) on cash flow hedges, before-tax amount	4	-2
Other comprehensive income (loss), before-tax amount	-72	130
Foreign currency translation adjustment, tax expense (benefit)	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
Prior service credit, tax expense (benefit)	-3	-2
Net gain (loss) on pension and other postretirement benefits, tax expense (benefit)	0	118
Derivative instruments designated and qualifying as cash flow hedges:	'	'
Net gain arising during the period, tax expense (benefit)	2	0
Net gain reclassified into income, tax expense (benefit)	-1	-1
Net gain (loss) on cash flow hedges, tax expense (benefit)	1	-1
Other comprehensive income (loss) tax expense (benefit)	1	117
Foreign currency translation adjustment, net	-74	-204
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	5	9
Prior service credit, net	-7	-4
Net gain (loss) on pension and other postretirement benefits, net	-2	218
Derivative instruments designated and qualifying as cash flow hedges:	'	'
Net gain arising during the period, net	5	1
Net gain reclassified into income, net	-2	-2
Net gain (loss) on cash flow hedges, net	3	-1
Other comprehensive income (loss)	($73)	$13

Equity_Changes_in_Accumulated_

Equity, Changes in Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 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)	-73	13
Ending balance, accumulated other comprehensive income (loss), net of tax	277	'
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	-69	10
Amounts reclassified from accumulated other comprehensive income	-4	3
Net other comprehensive income (loss)	-73	13
Ending balance, accumulated other comprehensive income (loss), net of tax	277	121
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	-74	-204
Amounts reclassified from accumulated other comprehensive income	0	0
Net other comprehensive income (loss)	-74	-204
Ending balance, accumulated other comprehensive income (loss), net of tax	334	461
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	-2	5
Net other comprehensive income (loss)	-2	218
Ending balance, accumulated other comprehensive income (loss), net of tax	-60	-340
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	5	1
Amounts reclassified from accumulated other comprehensive income	-2	-2
Net other comprehensive income (loss)	3	-1
Ending balance, accumulated other comprehensive income (loss), net of tax	$3	$0

Equity_Reclassification_Out_of

Equity, Reclassification Out of Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income (Loss)	'		'
Net actuarial loss	$8		$14
Prior service credit	-10		-6
Total before tax	1,265		992
Tax benefit (expense)	-429		-340
Net of tax	836		652
Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member]	'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income (Loss)	'		'
Net of tax	4		-3
Defined Benefit Plans Items [Member] | Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member]	'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income (Loss)	'		'
Net actuarial loss	-8	[1]	-14	[1]
Prior service credit	10	[1]	6	[1]
Total before tax	2		-8
Tax benefit (expense)	0		3
Net of tax	2		-5
Gains (Losses) on Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member]	'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income (Loss)	'		'
Total before tax	3		3
Tax benefit (expense)	-1		-1
Net of tax	2		2
Gains (Losses) on Cash Flow Hedges [Member] | Commodity Contract [Member] | Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member]	'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income (Loss)	'		'
Cost of sales	$3		$3
[1]	These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost, as further discussed in Note 7. Net periodic benefit cost is reflected in operating expenses and general and administrative expenses.

Employee_Benefit_Plans_Details

Employee Benefit Plans (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Employee Benefit Plans (Textual)	'	'
Gain arising during the period related to plan amendments	$0	($328)
Pension Plan, Defined Benefit [Member]	'	'
Components of net periodic benefit cost:	'	'
Service cost	30	36
Interest cost	23	22
Expected return on plan assets	-33	-32
Amortization of:	'	'
Prior service credit	-5	-3
Net actuarial loss	8	14
Net periodic benefit cost	23	37
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	10	8
Other Postretirement Benefit Plan, Defined Benefit [Member]	'	'
Components of net periodic benefit cost:	'	'
Service cost	2	3
Interest cost	4	4
Expected return on plan assets	0	0
Amortization of:	'	'
Prior service credit	-5	-3
Net actuarial loss	0	0
Net periodic benefit cost	1	4
Employee Benefit Plans (Textual)	'	'
Contributions to pension plans	$4	$4

Earnings_Per_Common_Share_Deta

Earnings Per Common Share (Details) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Less dividends paid:	'	'
Weighted-average common shares outstanding (in shares)	531	550
Earnings per common share – assuming dilution:	'	'
Weighted-average common shares outstanding (in shares)	531	550
Common equivalent shares:	'	'
Weighted-average common shares outstanding – assuming dilution (in shares)	536	556
Common Stock [Member]	'	'
Earnings per common share:	'	'
Net income attributable to Valero stockholders	828	654
Less dividends paid:	'	'
Common stock	132	110
Nonvested restricted stock	1	1
Undistributed earnings	695	543
Weighted-average common shares outstanding (in shares)	531	550
Earnings per common share:	'	'
Distributed earnings (in usd per share)	0.25	0.2
Undistributed earnings (in usd per share)	1.3	0.98
Total earnings per common share (in usd per share)	1.55	1.18
Earnings per common share – assuming dilution:	'	'
Net income attributable to Valero stockholders	828	654
Weighted-average common shares outstanding (in shares)	531	550
Common equivalent shares:	'	'
Stock options (in shares)	3	4
Performance awards and nonvested restricted stock (in shares)	2	2
Weighted-average common shares outstanding – assuming dilution (in shares)	536	556
Earnings per common share – assuming dilution (in usd per share)	1.54	1.18
Restricted Stock [Member]	'	'
Less dividends paid:	'	'
Weighted-average common shares outstanding (in shares)	2	3
Earnings per common share:	'	'
Distributed earnings (in usd per share)	0.25	0.2
Undistributed earnings (in usd per share)	1.3	0.98
Total earnings per common share (in usd per share)	1.55	1.18
Earnings per common share – assuming dilution:	'	'
Weighted-average common shares outstanding (in shares)	2	3

Earnings_Per_Common_Share_Pote

Earnings Per Common Share, Potentially Dilutive Securities (Details) (Stock Options [Member])	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 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

Segment_Information_Details

Segment Information (Details) (USD $)

3 Months Ended

3 Months Ended

1 Months Ended

In Millions, unless otherwise specified

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 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]

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]

Mount Vernon [Member]

Refining [Member]

Refining [Member]

Ethanol [Member]

Ethanol [Member]

Retail [Member]

Retail [Member]

Corporate and Other [Member]

Corporate and Other [Member]

Refining [Member]

Refining [Member]

Ethanol [Member]

Ethanol [Member]

Retail [Member]

Retail [Member]

Segment information for our reportable segments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

$33,663

$33,474

'

'

'

'

'

'

'

$32,452

$29,553

$1,211

$1,004

$0

$2,917

$0

$0

$25

$2,260

$0

$2,205

$25

$55

$0

$0

'

Operating income (loss)

1,350

1,061

'

'

'

'

'

'

'

1,279

1,212

243

14

0

42

-172

-207

'

'

'

'

'

'

'

'

'

Total assets by reportable segment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reportable segment assets

47,099

'

47,260

41,235

40,834

1,003

889

4,861

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 $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Decrease (increase) in current assets:	'	'
Receivables, net	$958	$409
Inventories	-1,356	-1,074
Income taxes receivable	-31	79
Prepaid expenses and other	0	-233
Increase (decrease) in current liabilities:	'	'
Accounts payable	-299	561
Accrued expenses	-50	181
Taxes other than income taxes	-198	318
Income taxes payable	-112	14
Changes in current assets and current liabilities	-1,088	255
Cash Flows Related to Interest and Income Taxes	'	'
Interest paid in excess of amount capitalized	74	56
Income taxes paid, net	$459	$48

Fair_Value_Measurements_Recurr

Fair Value Measurements, Recurring (Details) (Fair Value, Measurements, Recurring [Member], USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Assets:	'	'
Commodity derivative contracts	$872	$537
Investments of certain benefit plans	110	109
Total gross fair value, assets	984	646
Commodity derivative contracts, net assets	89	25
Net Carrying Value on Balance Sheet, Assets	201	134
Cash Collateral Received Not Offset	0	0
Liabilities:	'	'
Commodity derivative contracts	792	516
Biofuels blending obligation	75	11
Foreign currency contracts	9	8
Total gross fair value, liabilities	877	540
Commodity derivative contracts, net liabilities	2	5
Net Carrying Value on Balance Sheet, Liabilities	87	29
Cash Collateral Paid Not Offset	-66	-76
Physical Purchase Contracts [Member]	'	'
Assets:	'	'
Physical purchase contracts	2	'
Liabilities:	'	'
Physical purchase contracts	1	5
Fair Value, Inputs, Level 1 [Member]	'	'
Assets:	'	'
Commodity derivative contracts	709	499
Investments of certain benefit plans	99	98
Total gross fair value, assets	808	597
Liabilities:	'	'
Commodity derivative contracts	643	492
Biofuels blending obligation	0	0
Foreign currency contracts	9	8
Total gross fair value, liabilities	652	500
Fair Value, Inputs, Level 1 [Member] | Physical Purchase Contracts [Member]	'	'
Assets:	'	'
Physical purchase contracts	0	'
Liabilities:	'	'
Physical purchase contracts	0	0
Fair Value, Inputs, Level 2 [Member]	'	'
Assets:	'	'
Commodity derivative contracts	163	38
Investments of certain benefit plans	0	0
Total gross fair value, assets	165	38
Liabilities:	'	'
Commodity derivative contracts	149	24
Biofuels blending obligation	75	11
Foreign currency contracts	0	0
Total gross fair value, liabilities	225	40
Fair Value, Inputs, Level 2 [Member] | Physical Purchase Contracts [Member]	'	'
Assets:	'	'
Physical purchase contracts	2	'
Liabilities:	'	'
Physical purchase contracts	1	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]	'	'
Assets:	'	'
Physical purchase contracts	0	'
Liabilities:	'	'
Physical purchase contracts	0	0
Netting [Member]	'	'
Assets:	'	'
Effect of Counterparty Netting	-759	-505
Effect of Cash Collateral Netting	-24	-7
Liabilities:	'	'
Effect of Counterparty Netting	-759	-505
Effect of Cash Collateral Netting	($31)	($6)

Fair_Value_Measurements_Level_

Fair Value Measurements, Level 3 Reconciliation (Details) (Fair Value, Measurements, Recurring [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Fair Value, Measurements, Recurring [Member]	'	'
Fair Value Measurements (Textual)	'	'
Activity related to fair value amounts categorized in level 3	$0	$0

Fair_Value_Measurements_Nonrec

Fair Value Measurements, Nonrecurring (Details) (Fair Value, Measurements, Nonrecurring [Member], USD $)	Mar. 31, 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 $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Financial assets:	'	'	'	'
Cash and temporary cash investments, at carrying amount	$3,647	$4,292	$1,857	$1,723
Financial liabilities:	'	'	'	'
Debt (excluding capital leases), at carrying amount	6,526	6,525	'	'
Fair Value, Inputs, Level 1 [Member]	'	'	'	'
Financial assets:	'	'	'	'
Cash and temporary cash investments, at fair value	3,647	4,292	'	'
Fair Value, Inputs, Level 2 [Member]	'	'	'	'
Financial liabilities:	'	'	'	'
Debt (excluding capital leases), at fair value	$7,883	$7,659	'	'

Price_Risk_Management_Activiti2

Price Risk Management Activities (Details) (USD $)

3 Months Ended

1 Months Ended

In Millions, unless otherwise specified

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Apr. 30, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Biofuels Blending [Member]

Biofuels Blending [Member]

Foreign Currency Contract [Member]

Foreign Currency Contract [Member]

Fair Value Hedging [Member]

Fair Value Hedging [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]

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]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Subsequent Event [Member]

Future [Member]

Future [Member]

Forward Contracts [Member]

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]

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]

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]

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]

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]

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]

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 Current Year [Member]

Maturity Current Year [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 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 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]

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]

Crude Oil (in thousands of barrels) [Member]

Grain (in thousands of bushels) [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]

Grain (in thousands of bushels) [Member]

Natural Gas (in billions of BTUs) [Member]

Crude Oil (in thousands of barrels) [Member]

Grain (in thousands of bushels) [Member]

Natural Gas (in billions of BTUs) [Member]

Crude Oil (in thousands of barrels) [Member]

Grain (in thousands of bushels) [Member]

Natural Gas (in billions of BTUs) [Member]

Crude Oil (in thousands of barrels) [Member]

Grain (in thousands of bushels) [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

MBbls

MBbls

MBbls

bu

MBbls

bu

MBbls

bu

lb

MBbls

bu

lb

bu

bu

MBbls

MBbls

MBbls

MBbls

MBbls

bu

MMBTU

MBbls

bu

MMBTU

MBbls

bu

MMBTU

MBbls

bu

MMBTU

MBbls

MBbls

MBbls

MBbls

MBbls

MMBTU

MBbls

MMBTU

MBbls

MBbls

Volume of Outstanding Contracts

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Nonmonetary notional amount of price risk derivatives

'

'

'

'

2,229

2,905

676

13,578

10,312

3,266

68,833

12,085,000

14

0

95,621

32,130,000

99,540,000

0

2,075,000

0

16,957,000

2,157,000

10,260

0

10,551

0

97,715

145,000

1,000,000

8,940

0

1,500,000

97,631

145,000

750,000

8,940

0

0

17,760

0

17,760

0

12,700

500,000

0

0

13,150

0

Price Risk Management Activities (Textual)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Monetary notional amount of derivative liabilities

'

'

$999

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Foreign currency commitments maturity date

'

'

'

30-Apr-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Compliance program costs

$92

$130

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Price_Risk_Management_Activiti3

Price Risk Management Activities, Hedging Instruments by Consolidated Balance Sheet Location (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Values of Derivative Instruments	'	'
Total derivative assets, net	$874	$537
Total derivative liabilities, net	802	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	19	25
Derivative asset, fair value, gross liability	23	36
Not Designated as Hedging Instrument [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative asset, fair value, gross asset	855	512
Derivative liability, fair value, gross liability	779	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	690	474
Derivative asset, fair value, gross liability	620	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	159	33
Derivative asset, fair value, gross liability	142	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	3	0
Derivative liability, fair value, gross liability	5	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] | Options Held [Member] | Commodity Contract [Member] | Trade Accounts Receivable [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative asset, fair value, gross asset	1	2
Derivative asset, fair value, gross liability	2	2
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	2	0
Derivative asset, fair value, gross liability	1	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	$9	$8

Price_Risk_Management_Activiti4

Price Risk Management Activities, Gain (Loss) by Income Statement Location (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Price Risk Management Activities (Textual)	'	'
Accumulated other comprehensive income, cumulative after-tax gains on cash flow hedges	$3	'
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	-31	-1
Gain recognized in income on hedged item	30	0
Loss recognized in income on derivatives (ineffective portion)	-1	-1
Cash Flow Hedging [Member] | Commodity Contract [Member]	'	'
Effect of Derivative Instruments on Income and OCI	'	'
Gain recognized in OCI on derivatives (effective portion)	7	1
Cash Flow Hedging [Member] | Commodity Contract [Member] | Cost of Sales [Member]	'	'
Effect of Derivative Instruments on Income and OCI	'	'
Gain reclassified from accumulated OCI into income (effective portion)	3	3
Loss recognized in income on derivatives (ineffective portion)	-4	-1
Economic Hedging [Member]	'	'
Effect of Derivative Instruments on Income and OCI	'	'
Gain (loss) recognized in income on derivatives	13	60
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	4	35
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	9	25
Trading Derivatives [Member]	'	'
Effect of Derivative Instruments on Income and OCI	'	'
Gain (loss) recognized in income on derivatives	-1	-11
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	-1	2
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	($13)