Valero Energy (VLO) 10-K 27 Feb 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Billions, except Share data, unless otherwise specified	Dec. 31, 2013	Jan. 31, 2014	Jun. 28, 2013
Entity Information [Line Items]	'	'	'
Entity Registrant Name	'VALERO ENERGY CORP/TX	'	'
Entity Central Index Key	'0001035002	'	'
Document Type	'10-K	'	'
Document Period End Date	31-Dec-13	'	'
Amendment Flag	'false	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
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 Public Float	'	'	$18.80
Entity Common Stock, Shares Outstanding	'	532,510,263	'

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Current assets:	'	'
Cash and temporary cash investments	$4,292	$1,723
Receivables, net	8,751	8,167
Inventories	5,758	5,973
Income taxes receivable	72	169
Deferred income taxes	266	274
Prepaid expenses and other	138	154
Total current assets	19,277	16,460
Property, plant, and equipment, at cost	33,933	34,132
Accumulated depreciation	-8,226	-7,832
Property, plant, and equipment, net	25,707	26,300
Intangible assets, net	156	213
Deferred charges and other assets, net	2,120	1,504
Total assets	47,260	44,477
Current liabilities:	'	'
Current portion of debt and capital lease obligations	303	586
Accounts payable	9,931	9,348
Accrued expenses	522	590
Taxes other than income taxes	1,345	1,026
Income taxes payable	773	1
Deferred income taxes	249	378
Total current liabilities	13,123	11,929
Debt and capital lease obligations, less current portion	6,261	6,463
Deferred income taxes	6,601	5,860
Other long-term liabilities	1,329	2,130
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	7,187	7,322
Treasury stock, at cost; 137,932,138 and 121,406,520 common shares	-7,054	-6,437
Retained earnings	18,970	17,032
Accumulated other comprehensive income	350	108
Total Valero Energy Corporation stockholders’ equity	19,460	18,032
Noncontrolling interests	486	63
Total equity	19,946	18,095
Total liabilities and equity	$47,260	$44,477

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Valero Energy Corporation stockholders’ equity:	'	'
Common stock, par value	$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, at cost, common shares	137,932,138	121,406,520

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statements of Income	'	'	'
Operating revenues	$138,074	$139,250	$125,987
Costs and expenses:	'	'	'
Cost of sales	127,316	127,268	115,719
Operating expenses:	'	'	'
Refining	3,704	3,668	3,406
Retail	226	686	678
Ethanol	387	332	399
General and administrative expenses	758	698	571
Depreciation and amortization expense	1,720	1,574	1,534
Asset impairment losses	0	1,014	0
Total costs and expenses	134,111	135,240	122,307
Operating income	3,963	4,010	3,680
Gain on disposition of retained interest in CST Brands, Inc.	325	0	0
Other income, net	59	9	43
Interest and debt expense, net of capitalized interest	-365	-313	-401
Income from continuing operations before income tax expense	3,982	3,706	3,322
Income tax expense	1,254	1,626	1,226
Income from continuing operations	2,728	2,080	2,096
Loss from discontinued operations, net of income taxes	0	0	-7
Net income	2,728	2,080	2,089
Less: Net income (loss) attributable to noncontrolling interests	8	-3	-1
Net income attributable to Valero Energy Corporation stockholders	2,720	2,083	2,090
Net income attributable to Valero Energy Corporation stockholders:	'	'	'
Continuing operations	2,720	2,083	2,097
Discontinued operations	0	0	-7
Net income attributable to Valero Energy Corporation stockholders	$2,720	$2,083	$2,090
Earnings per common share:	'	'	'
Continuing operations	$4.99	$3.77	$3.70
Discontinued operations	$0	$0	($0.01)
Total	$4.99	$3.77	$3.69
Weighted-average common shares outstanding (in millions)	542	550	563
Earnings per common share – assuming dilution:	'	'	'
Continuing operations	$4.97	$3.75	$3.69
Discontinued operations	$0	$0	($0.01)
Total	$4.97	$3.75	$3.68
Weighted-average common shares outstanding – assuming dilution (in millions)	548	556	569
Dividends per common share	$0.85	$0.65	$0.30

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income	$2,728	$2,080	$2,089
Other comprehensive income (loss):	'	'	'
Foreign currency translation adjustment	-98	164	-122
Net gain (loss) on pension and other postretirement benefits	763	-211	-292
Net gain (loss) on derivative instruments designated and qualifying as cash flow hedges	-2	-28	29
Other comprehensive income (loss) before income tax expense (benefit)	663	-75	-385
Income tax expense (benefit) related to items of other comprehensive income (loss)	262	-87	-93
Other comprehensive income (loss)	401	12	-292
Comprehensive income	3,129	2,092	1,797
Less: Comprehensive income (loss) attributable to noncontrolling interests	8	-3	-1
Comprehensive income attributable to Valero Energy Corporation stockholders	$3,121	$2,095	$1,798

Consolidated_Statements_of_Equ

Consolidated Statements of Equity (USD $)

Total

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

Shares Purchased Under Programs, Cost [Member]

Parent [Member]

Parent [Member]

Parent [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Additional Paid-in Capital [Member]

Additional Paid-in Capital [Member]

Additional Paid-in Capital [Member]

Treasury Stock [Member]

Treasury Stock [Member]

Treasury Stock [Member]

Retained Earnings [Member]

Retained Earnings [Member]

Retained Earnings [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Noncontrolling Interest [Member]

In Millions, unless otherwise specified

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

Shares Purchased Under Programs, Cost [Member]

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

Shares Purchased Under Programs, Cost [Member]

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

Shares Purchased Under Programs, Cost [Member]

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

Shares Purchased Under Programs, Cost [Member]

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

Shares Purchased Under Programs, Cost [Member]

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

Shares Purchased Under Programs, Cost [Member]

Beginning balance at Dec. 31, 2010

$15,025

'

'

$15,025

'

'

$7

'

'

$7,704

'

'

($6,462)

'

'

$13,388

'

'

$388

'

'

$0

Increase (Decrease) in Equity Roll Forward

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income (loss)

2,089

'

'

2,090

'

'

0

'

'

0

'

'

0

'

'

2,090

'

'

0

'

'

-1

Dividends on common stock

-169

'

'

-169

'

'

0

'

'

0

'

'

0

'

'

-169

'

'

0

'

'

'

Stock-based compensation expense

57

'

'

57

'

'

0

'

'

57

'

'

0

'

'

0

'

'

0

'

'

'

Tax deduction in excess of stock- based compensation expense

22

'

'

22

'

'

0

'

'

22

'

'

0

'

'

0

'

'

0

'

'

'

Transactions in connection with stock-based compensation plans:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock issuances

49

'

'

49

'

'

0

'

'

-287

'

'

336

'

'

0

'

'

0

'

'

'

Stock repurchases

'

-359

'

'

-359

'

'

0

'

'

'

'

'

-349

0

'

0

'

'

0

'

'

Contributions from noncontrolling interests

23

'

'

0

'

'

0

'

'

0

'

'

0

'

'

0

'

'

0

'

'

23

Recognition of noncontrolling interests in Mainline Pipelines Limited in connection with Pembroke Acquisition

5

'

'

0

'

'

0

'

'

0

'

'

0

'

'

0

'

'

0

'

'

5

Acquisition of noncontrolling interests in Mainline Pipelines Limited

-5

'

'

0

'

'

0

'

'

0

'

'

0

'

'

0

'

'

0

'

'

-5

Other

'

'

'

'

'

'

'

'

'

'

-10

'

'

'

'

'

'

'

'

'

'

'

Other comprehensive income (loss)

-292

'

'

-292

'

'

0

'

'

0

'

'

0

'

'

0

'

'

-292

'

'

'

Ending balance at Dec. 31, 2011

16,445

'

'

16,423

'

'

7

'

'

7,486

'

'

-6,475

'

'

15,309

'

'

96

'

'

22

Increase (Decrease) in Equity Roll Forward

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income (loss)

2,080

'

'

2,083

'

'

0

'

'

0

'

'

0

'

'

2,083

'

'

0

'

'

-3

Dividends on common stock

-360

'

'

-360

'

'

0

'

'

0

'

'

0

'

'

-360

'

'

0

'

'

'

Stock-based compensation expense

57

'

'

57

'

'

0

'

'

57

'

'

0

'

'

0

'

'

0

'

'

'

Tax deduction in excess of stock- based compensation expense

29

'

'

29

'

'

0

'

'

29

'

'

0

'

'

0

'

'

0

'

'

'

Transactions in connection with stock-based compensation plans:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock issuances

59

'

'

59

'

'

0

'

'

-260

'

'

319

'

'

0

'

'

0

'

'

'

Stock repurchases

'

-153

-118

'

-153

-118

'

0

0

'

'

0

'

-163

-118

'

0

0

'

0

0

'

Contributions from noncontrolling interests

44

'

'

0

'

'

0

'

'

0

'

'

0

'

'

0

'

'

0

'

'

44

Other

'

'

'

'

'

'

'

'

'

'

10

'

'

'

'

'

'

'

'

'

'

'

Other comprehensive income (loss)

12

'

'

12

'

'

0

'

'

0

'

'

0

'

'

0

'

'

12

'

'

'

Ending balance at Dec. 31, 2012

18,095

'

'

18,032

'

'

7

'

'

7,322

'

'

-6,437

'

'

17,032

'

'

108

'

'

63

Increase (Decrease) in Equity Roll Forward

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income (loss)

2,728

'

'

2,720

'

'

0

'

'

0

'

'

0

'

'

2,720

'

'

0

'

'

8

Dividends on common stock

-462

'

'

-462

'

'

0

'

'

0

'

'

0

'

'

-462

'

'

0

'

'

'

Stock-based compensation expense

64

'

'

64

'

'

0

'

'

64

'

'

0

'

'

0

'

'

0

'

'

'

Tax deduction in excess of stock- based compensation expense

47

'

'

47

'

'

0

'

'

47

'

'

0

'

'

0

'

'

0

'

'

'

Transactions in connection with stock-based compensation plans:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock issuances

59

'

'

59

'

'

0

'

'

-243

'

'

302

'

'

0

'

'

0

'

'

'

Stock repurchases

'

-236

-692

'

-236

-692

'

0

0

'

0

0

'

-236

-692

'

0

0

'

0

0

'

Contributions from noncontrolling interests

46

'

'

0

'

'

0

'

'

0

'

'

0

'

'

0

'

'

0

'

'

46

Separation of retail business

-479

'

'

-479

'

'

0

'

'

-9

'

'

9

'

'

-320

'

'

-159

'

'

'

Net proceeds from initial public offering of common units of Valero Energy Partners LP

369

'

'

0

'

'

0

'

'

0

'

'

0

'

'

0

'

'

0

'

'

369

Other

6

'

'

6

'

'

0

'

'

6

'

'

0

'

'

0

'

'

0

'

'

'

Other comprehensive income (loss)

401

'

'

401

'

'

0

'

'

0

'

'

0

'

'

0

'

'

401

'

'

'

Ending balance at Dec. 31, 2013

$19,946

'

'

$19,460

'

'

$7

'

'

$7,187

'

'

($7,054)

'

'

$18,970

'

'

$350

'

'

$486

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:	'	'	'
Net income	$2,728	$2,080	$2,089
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Depreciation and amortization expense	1,720	1,574	1,534
Gain on disposition of retained interest in CST Brands, Inc.	-325	0	0
Asset impairment losses	0	1,014	0
Loss on sales of refinery assets, net	0	0	12
Stock-based compensation expense	64	58	58
Deferred income tax expense	501	963	461
Changes in current assets and current liabilities	922	-302	81
Changes in deferred charges and credits and other operating activities, net	-46	-117	-197
Net cash provided by operating activities	5,564	5,270	4,038
Cash flows from investing activities:	'	'	'
Capital expenditures	-2,121	-2,931	-2,355
Deferred turnaround and catalyst costs	-634	-479	-629
Acquisition of Pembroke Refinery, net of cash acquired	0	0	-1,691
Acquisition of Meraux Refinery	0	0	-547
Proceeds from the sale of the Paulsboro Refinery	0	160	0
Other investing activities, net	-57	-101	-76
Net cash used in investing activities	-2,812	-3,351	-5,298
Cash flows from financing activities:	'	'	'
Proceeds from debt borrowings	0	2,900	150
Repayments of debt	-480	-3,612	-778
Proceeds from the exercise of stock options	59	59	49
Purchase of common stock for treasury	-928	-281	-349
Common stock dividends	-462	-360	-169
Net proceeds from initial public offering of common units of Valero Energy Partners LP	369	0	0
Contributions from noncontrolling interests	45	44	22
Disposition of retail business:	'	'	'
Proceeds from short-term debt in anticipation of separation	550	0	0
Cash distributed to Valero by CST Brands, Inc.	500	0	0
Cash held and retained by CST Brands, Inc. upon separation	-315	0	0
Proceeds from short-term debt related to disposition of retained interest	525	0	0
Repayments of short-term debt related to disposition of retained interest	-58	0	0
Other financing activities, net	32	17	9
Net cash used in financing activities	-163	-1,233	-1,066
Effect of foreign exchange rate changes on cash	-20	13	16
Net increase (decrease) in cash and temporary cash investments	2,569	699	-2,310
Cash and temporary cash investments at beginning of year	1,723	1,024	3,334
Cash and temporary cash investments at end of year	$4,292	$1,723	$1,024

Basis_of_Presentation_and_Summ

Basis of Presentation and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
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
	General
	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. We are an independent petroleum refining and marketing company and own 16 refineries with a combined throughput capacity of approximately 3.1 million barrels per day as of December 31, 2013. We market branded and unbranded refined products on a wholesale basis in the United States (U.S.), Canada, the Caribbean, the United Kingdom (U.K.), and Ireland through an extensive bulk and rack marketing network and through approximately 7,400 outlets that carry the Valero®, Shamrock®, Ultramar®, Beacon®, and Texaco® brand names. We also own 10 ethanol plants in the U.S. that primarily produce ethanol with a combined production capacity of approximately 1.2 billion gallons per year as of December 31, 2013. Our operations are affected by:
	•	company-specific factors, primarily refinery utilization rates and refinery maintenance turnarounds;
	•	seasonal factors, such as the demand for refined products during the summer driving season and heating oil during the winter season; and
	•	industry factors, such as movements in and the level of crude oil prices including the effect of quality differentials between grades of crude oil, the demand for and prices of refined products, industry supply capacity, and competitor refinery maintenance turnarounds.
	We have evaluated subsequent events that occurred after December 31, 2013 through the filing of this Form 10-K. Any material subsequent events that occurred during this time have been properly recognized or disclosed in these financial statements.
	Significant Accounting Policies
	Reclassifications
	Certain amounts previously reported in our annual report on Form 10-K for the year ended December 31, 2012 have been reclassified to conform to the 2013 presentation.
	Principles of Consolidation
	General
	These financial statements include the accounts of Valero and subsidiaries in which Valero has a controlling interest. Intercompany balances and transactions have been eliminated in consolidation. Investments in significant noncontrolled entities are accounted for using the equity method.
	Noncontrolling Interests
	Because of our controlling financial interest in each of the following entities, we have included their financial statements in our financial statements and have separately disclosed the related noncontrolling interests.
	•	Valero Energy Partners LP (VLP) is a master limited partnership formed in July 2013 to own, operate, develop, and acquire primarily fee-based crude oil and refined petroleum product pipelines and terminals. As further described in Note 5, VLP completed an initial public offering of its common units on December 16, 2013 and we owned a 70.6 percent controlling financial interest in VLP as of December 31, 2013.
	•	Diamond Green Diesel Holdings LLC (DGD Holdings) is a 50/50 joint venture with Darling Green Energy LLC, a subsidiary of Darling International, Inc., that constructed and now operates a biomass-based diesel unit having a design feed capacity of 10,000 barrels per day that processes animal fats, used cooking oils, and other vegetable oils into renewable green diesel. As of December 31, 2013, we had loaned $221 million to a subsidiary of DGD Holdings to finance a portion of the construction costs of the unit. The unit began operations in June 2013.
	•	PI Dock Facilities LLC (PI Dock) is a 50/50 joint venture with TGSD PI, LLC that will construct and operate crude oil docks and related facilities near our Port Arthur Refinery. In December 2012, we agreed to lend PI Dock up to $90 million to finance the construction of the initial crude dock, which is expected to be completed in late third quarter or early fourth quarter of 2014. As of December 31, 2013, we had loaned PI Dock $13 million to finance its construction projects.
	Use of Estimates
	The preparation of financial statements in conformity with U.S. generally accepted accounting principles (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.
	Cash and Temporary Cash Investments
	Our temporary cash investments are highly liquid, low-risk debt instruments that have a maturity of three months or less when acquired.
	Receivables
	Trade receivables are carried at original invoice amount. We maintain an allowance for doubtful accounts, which is adjusted based on management’s assessment of our customers’ historical collection experience, known credit risks, and industry and economic conditions.
	Inventories
	Inventories are carried at the lower of cost or market. The cost of refinery feedstocks purchased for processing, refined products, and grain and ethanol inventories are determined under the last-in, first-out (LIFO) method using the dollar-value LIFO method, with any increments valued based on average purchase prices during the year. The cost of feedstocks and products purchased for resale and the cost of materials and supplies are determined principally under the weighted-average cost method.
	Property, Plant, and Equipment
	The cost of property, plant, and equipment (property assets) purchased or constructed, including betterments of property assets, is capitalized. However, the cost of repairs to and normal maintenance of property assets is expensed as incurred. Betterments of property assets are those that extend the useful life, increase the capacity or improve the operating efficiency of the asset, or improve the safety of our operations. The cost of property assets constructed includes interest and certain overhead costs allocable to the construction activities.
	Our operations, especially those of our refining segment, are highly capital intensive. Each of our refineries comprises a large base of property assets, consisting of a series of interconnected, highly integrated and interdependent crude oil processing facilities and supporting logistical infrastructure (Units), and these Units are continuously improved. Improvements consist of the addition of new Units and betterments of existing Units. We plan for these improvements by developing a multi-year capital program that is updated and revised based on changing internal and external factors.
	Depreciation of property assets used in our refining segment is recorded on a straight-line basis over the estimated useful lives of these assets primarily using the composite method of depreciation. We maintain a separate composite group of property assets for each of our refineries. We estimate the useful life of each group based on an evaluation of the property assets comprising the group, and such evaluations consist of, but are not limited to, the physical inspection of the assets to determine their condition, consideration of the manner in which the assets are maintained, assessment of the need to replace assets, and evaluation of the manner in which improvements impact the useful life of the group. The estimated useful lives of our composite groups range primarily from 25 to 30 years.
	Under the composite method of depreciation, the cost of an improvement is added to the composite group to which it relates and is depreciated over that group’s estimated useful life. We design improvements to our refineries in accordance with engineering specifications, design standards and practices accepted in our industry, and these improvements have design lives consistent with our estimated useful lives. Therefore, we believe the use of the group life to depreciate the cost of improvements made to the group is reasonable because the estimated useful life of each improvement is consistent with that of the group. It should be noted, however, that factors such as competition, regulation, or environmental matters could cause us to change our estimates, thus impacting depreciation expense in the future.
	Also under the composite method of depreciation, the historical cost of a minor property asset (net of salvage value) that is retired or replaced is charged to accumulated depreciation and no gain or loss is recognized in income. However, a gain or loss is recognized in income for a major property asset that is retired, replaced or sold and for an abnormal disposition of a property asset (primarily involuntary conversions). Gains and losses are reflected in depreciation and amortization expense, unless such amounts are reported separately due to materiality.
	Depreciation of property assets used in our ethanol segment and our former retail segment (see Note 3) is recorded on a straight-line basis over the estimated useful lives of the related assets. Leasehold improvements are amortized on a straight-line basis over the shorter of the lease term or the estimated useful life of the related asset. Assets acquired under capital leases are amortized on a straight-line basis over (i) the lease term if transfer of ownership does not occur at the end of the lease term or (ii) the estimated useful life of the asset if transfer of ownership does occur at the end of the lease term.
	Deferred Charges and Other Assets
	“Deferred charges and other assets, net” include the following:
	•	turnaround costs, which are incurred in connection with planned major maintenance activities at our refineries and ethanol plants and which are deferred when incurred and amortized on a straight-line basis over the period of time estimated to lapse until the next turnaround occurs;
	•	fixed-bed catalyst costs, representing the cost of catalyst that is changed out at periodic intervals when the quality of the catalyst has deteriorated beyond its prescribed function, which are deferred when incurred and amortized on a straight-line basis over the estimated useful life of the specific catalyst;
	•	investments in entities that we do not control; and
	•	other noncurrent assets such as investments of certain benefit plans (related primarily to certain U.S. nonqualified defined benefit plans whose plan assets are not protected from our creditors and therefore cannot be reflected as a reduction from our obligations under those pension plans), debt issuance costs, and various other costs.
	Impairment of Assets
	Long-lived assets, which include property, plant, and equipment, intangible assets, and refinery turnaround and catalysts costs, are tested for recoverability whenever events or changes in circumstances indicate that the carrying amount of the asset may not be recoverable. A long-lived asset is not recoverable if its carrying amount exceeds the sum of the undiscounted cash flows expected to result from its use and eventual disposition. If a long-lived asset is not recoverable, an impairment loss is recognized for the amount by which the carrying amount of the long-lived asset exceeds its fair value, with fair value determined based on discounted estimated net cash flows or other appropriate methods. See Note 4 for our impairment analysis of our long-lived assets.
	We evaluate our equity method investments for impairment when there is evidence that we may not be able to recover the carrying amount of our investments or the investee is unable to sustain an earnings capacity that justifies the carrying amount. A loss in the value of an investment that is other than a temporary decline is recognized currently in income, and is based on the difference between the estimated current fair value of the investment and its carrying amount.
	Environmental Matters
	Liabilities for future remediation costs are recorded when environmental assessments and/or remedial efforts are probable and the costs can be reasonably estimated. Other than for assessments, the timing and magnitude of these accruals generally are based on the completion of investigations or other studies or a commitment to a formal plan of action. Amounts recorded for environmental liabilities have not been reduced by possible recoveries from third parties and have not been measured on a discounted basis.
	Asset Retirement Obligations
	We record a liability, which is referred to as an asset retirement obligation, at fair value for the estimated cost to retire a tangible long-lived asset at the time we incur that liability, which is generally when the asset is purchased, constructed, or leased. We record the liability when we have a legal obligation to incur costs to retire the asset and when a reasonable estimate of the fair value of the liability can be made. If a reasonable estimate cannot be made at the time the liability is incurred, we record the liability when sufficient information is available to estimate the liability’s fair value.
	Foreign Currency Translation
	The functional currency of each of our international operations is generally the respective local currency, which includes the Canadian dollar, the Aruban florin, the pound sterling, and the euro. Balance sheet accounts are translated into U.S. dollars using exchange rates in effect as of the balance sheet date. Revenue and expense accounts are translated using the weighted-average exchange rates during the year presented. Foreign currency translation adjustments are recorded as a component of accumulated other comprehensive income.
	Revenue Recognition
	Revenues for products sold by the refining and ethanol segments and our former retail segment (see Note 3) are recorded upon delivery of the products to our customers, which is the point at which title to the products is transferred, and when payment has either been received or collection is reasonably assured.
	Excise taxes on sales by our U.S. retail system were presented on a gross basis. All other excise taxes are presented on a net basis.
	We enter into certain purchase and sale arrangements with the same counterparty that are deemed to be made in contemplation of one another. We combine these transactions and, as a result, revenues and cost of sales are not recognized in connection with these arrangements. We also enter into refined product exchange transactions to fulfill sales contracts with our customers by accessing refined products in markets where we do not operate our own refineries. These refined product exchanges are accounted for as exchanges of non-monetary assets, and no revenues are recorded on these transactions.
	Product Shipping and Handling Costs
	Costs incurred for shipping and handling of products are included in cost of sales.
	Cost of Biofuel Credits
	We purchase biofuel credits (primarily Renewable Identification Numbers (RINs) in the U.S.) to comply with government regulations that require us to blend a certain percentage of biofuels into the products we produce, as further described in Note 21 under “Compliance Program Price Risk.” To the degree that we are unable to blend biofuels at the required percentage, we must purchase biofuel credits in the open market to meet our obligation. The cost of purchased biofuel credits is charged to cost of sales as such credits are needed to satisfy our obligation. To the extent we have not purchased enough biofuel credits to satisfy our obligation as of the balance sheet date, we charge cost of sales for such deficiency based on the market price of the biofuel credits as of the balance sheet date, and we record a liability for our obligation to purchase those credits. See Note 20 for disclosure of our fair value liability.
	Stock-Based Compensation
	Compensation expense for our share-based compensation plans is based on the fair value of the awards granted and is recognized in income on a straight-line basis over the requisite service period of each award. For new grants that have retirement-eligibility provisions, we use the non-substantive vesting period approach, under which compensation cost is recognized immediately for awards granted to retirement-eligible employees or over the period from the grant date to the date retirement eligibility is achieved if that date is expected to occur during the nominal vesting period.
	Income Taxes
	Income taxes are accounted for under the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred amounts are measured using enacted tax rates expected to apply to taxable income in the year those temporary differences are expected to be recovered or settled.
	We have elected to classify any interest expense and penalties related to the underpayment of income taxes in income tax expense.
	Earnings per Common Share
Earnings per common share is computed by dividing net income by the weighted-average number of common shares outstanding for the year. Participating share-based payment awards, including shares of restricted stock granted under certain of our stock-based compensation plans, are included in the computation of basic earnings per share using the two-class method. Earnings per common share – assuming dilution reflects the potential dilution arising from our outstanding stock options and nonvested shares granted to employees in connection with our stock-based compensation plans. Potentially dilutive securities are excluded from the computation of earnings per common share – assuming dilution when the effect of including such shares would be antidilutive.
Financial Instruments
Our financial instruments include cash and temporary cash investments, receivables, payables, debt, capital lease obligations, commodity derivative contracts, and foreign currency derivative contracts. The estimated fair values of these financial instruments approximate their carrying amounts, except for certain debt as discussed in Note 20.
Derivatives and Hedging
All derivative instruments are recorded in the balance sheet as either assets or liabilities measured at their fair values. 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, are 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 in 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 hedging relationships (derivative instruments not designated as fair value or cash flow hedges) and for derivative instruments entered into 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 the statements of cash flows.
New Accounting Pronouncements
In July 2013, the provisions of Accounting Standards Codification 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 will not affect our financial position or results of operations, nor will it require any additional disclosures, but may result in a change in presentation to our consolidated balance sheets.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
ACQUISITIONS	'
	2	ACQUISITIONS
	Acquisitions of Refineries
	The acquired refining and marketing businesses discussed below involve the production and marketing of refined petroleum products. These acquisitions are consistent with our general business strategy and complement our existing refining and marketing network.
	Meraux Acquisition
	On October 1, 2011, we acquired the Meraux Refinery and related logistics assets from Murphy Oil Corporation for an initial payment of $586 million, which was funded from available cash. This acquisition is referred to as the Meraux Acquisition. The Meraux Refinery has a total throughput capacity of 135,000 barrels per day and is located in Meraux, Louisiana.
	In the fourth quarter of 2011, we recorded an adjustment related to inventories acquired that reduced the purchase price to $547 million. In the fourth quarter of 2012, an independent appraisal of the assets acquired and liabilities assumed and certain other evaluations of the fair values related to the Meraux Acquisition were completed and finalized. The purchase price of the Meraux Acquisition was allocated based on the fair values of the assets acquired and the liabilities assumed at the date of acquisition resulting from this final appraisal and other evaluations. The primary adjustments to the preliminary purchase price allocation disclosed in 2011 consisted of an $8 million increase in materials and supplies inventories, a $27 million decrease in property, plant, and equipment, and a $19 million increase in deferred charges and other assets, net. The final amounts assigned to the assets acquired and liabilities assumed in the Meraux Acquisition were recognized at their acquisition-date fair values as follows (in millions):
	Inventories	$	227
	Property, plant, and equipment	293
	Deferred charges and other assets, net	28
	Other long-term liabilities	(1		)
	Purchase price	$	547
	Pembroke Acquisition
	On August 1, 2011, we acquired 100 percent of the outstanding shares of a subsidiary of Chevron Corporation (Chevron) that owned and operated the Pembroke Refinery. The refinery has a total throughput capacity of 270,000 barrels per day and is located in Wales, U.K. We also acquired an extensive network of marketing and logistics assets throughout the U.K. and Ireland as part of this acquisition. On the acquisition date, we initially paid $1.8 billion from available cash, of which $1.1 billion was for working capital. Subsequent to the acquisition date, we recorded an adjustment to working capital (primarily inventory), resulting in an adjusted purchase price of $1.7 billion. This acquisition is referred to as the Pembroke Acquisition.
	In the third quarter of 2012, an independent appraisal of the assets acquired and liabilities assumed and certain other evaluations of the fair values related to the Pembroke Acquisition were completed and finalized. The purchase price of the Pembroke Acquisition was allocated based on the fair values of the assets acquired and the liabilities assumed at the date of acquisition resulting from this final appraisal and other evaluations. The primary adjustments to the preliminary purchase price allocation disclosed in 2011 consisted of a $143 million increase in property, plant, and equipment, a $124 million increase in deferred income taxes, and a $17 million increase in other long-term liabilities. The final amounts assigned to the assets acquired and liabilities assumed in the Pembroke Acquisition were recognized at their acquisition-date fair values as follows (in millions):
	Current assets, net of cash acquired	$	2,215
	Property, plant, and equipment	947
	Intangible assets	22
	Deferred charges and other assets, net	37
	Current liabilities, less current portion of debt	(1,294		)
	and capital lease obligations
	Debt and capital leases assumed, including current portion	(12		)
	Deferred income taxes	(159		)
	Other long-term liabilities	(60		)
	Noncontrolling interest	(5		)
	Purchase price, net of cash acquired	$	1,691
	Because of the adjustment to property, plant, and equipment discussed above, we recorded an additional $6 million of depreciation expense in the third quarter of 2012 to true-up depreciation expense for the period from the date of the Pembroke Acquisition (August 1, 2011) through July 31, 2012.
	In connection with the Pembroke Acquisition, we acquired an 85 percent interest in Mainline Pipelines Limited (MLP). MLP owns a pipeline that distributes refined products from the Pembroke Refinery to terminals in the U.K. In the fourth quarter of 2011, we acquired the remaining 15 percent interest in MLP.

Dispositions_of_Businesses

Dispositions of Businesses	12 Months Ended
	Dec. 31, 2013
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]	'
DISPOSITIONS OF BUSINESSES	'
	3	DISPOSITIONS OF BUSINESSES
	Separation of Retail Business
	On May 1, 2013, we completed the separation of our retail business by creating an independent public company named CST Brands, Inc. (CST) and distributing 80 percent of the outstanding shares of CST common stock to our stockholders. Each Valero stockholder received one share of CST common stock for every nine shares of Valero common stock held at the close of business on the record date of April 19, 2013. Fractional shares of CST common stock were not distributed, but instead were aggregated and sold in the open market at prevailing rates with net cash proceeds then distributed pro rata to each Valero stockholder who was entitled to receive fractional shares.
	In connection with the separation, we received an aggregate of $1.05 billion in cash, consisting of $550 million from the issuance of short-term debt to a third-party financial institution on April 16, 2013 and $500 million distributed to us by CST on May 1, 2013. The cash distributed to us by CST was borrowed by CST on May 1, 2013 under its senior secured credit facility. See Note 11 for further discussion of that credit facility. Also on May 1, 2013, CST issued $550 million of its senior unsecured bonds to us, and we exchanged those bonds with the third-party financial institution in satisfaction of our short-term debt. Immediately prior to May 1, 2013, subsidiaries of CST held $315 million of cash, and CST retained that cash following the distribution on May 1, 2013. Also in connection with the separation, we incurred a tax liability of approximately $189 million primarily related to the manner in which the transaction is treated for tax purposes in Canada; the majority of this liability was paid during 2013 and the remaining amounts will be paid in the first quarter of 2014. Therefore, the cash we received as a result of the separation, net of our tax liability, was $546 million. We also incurred $30 million in costs during the three months ended June 30, 2013 to effect the separation, which are included in general and administrative expenses.
	We also entered into long-term motor fuel supply agreements with CST in the U.S. and Canada. The nature and significance of our agreements to supply motor fuel to CST through 2028 represents a continuation of activities with CST for accounting purposes. As such, the historical results of operations of our retail business have not been reported as discontinued operations in our statements of income.
	On November 14, 2013, we disposed of our 20 percent retained interest in CST by transferring all remaining shares of CST common stock owned by us to a third-party financial institution in exchange for $467 million of our short-term debt and recognized a $325 million nontaxable gain, as further described in Note 11.
	Selected historical results of operations of our retail business prior to the separation are disclosed in Note 18. Subsequent to May 1, 2013 and through November 14, 2013, our share of CST’s results of operations is reflected in “other income, net.” Our share of income taxes incurred directly by CST during this period is reported in the equity in earnings from CST, and as such is not included in income taxes in our statements of income.
	The following table presents the carrying values of the major categories of assets and liabilities of our retail business, immediately preceding its separation on May 1, 2013, which are excluded from our consolidated balance sheet as of December 31, 2013 (in millions):
	Assets
	Cash and temporary cash investments	$	315
	Credit card receivables from Valero	44
	Other receivables, net	109
	Inventories	170
	Deferred income taxes	14
	Prepaid expenses and other	13
	Total current assets	665
	Property, plant, and equipment, at cost	1,891
	Accumulated depreciation	(611		)
	Property, plant, and equipment, net	1,280
	Intangible assets, net	38
	Deferred charges and other assets, net	191
	Total assets	$	2,174
	Liabilities
	Current portion of capital lease obligations	$	2
	Trade payable to Valero	242
	Other accounts payable	96
	Accrued expenses	31
	Taxes other than income taxes	20
	Total current liabilities	391
	Debt and capital lease obligations, less current portion	1,053
	Deferred income taxes	83
	Other long-term liabilities	112
	Total liabilities	$	1,639
	We retained certain environmental and other liabilities related to our former retail business and we have indemnified CST for certain self-insurance liabilities related to its employees and property.
	Sales of Refineries
	In 2010, we sold our Paulsboro and our Delaware City Refineries. The results of operations of these refineries have been presented as discontinued operations for the year ended December 31, 2011.

Impairments

Impairments	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment Impairment or Disposal [Abstract]	'
IMPAIRMENTS	'
	4	IMPAIRMENTS
	Benicia Refinery
	We evaluated the Benicia Refinery for potential impairment as of December 31, 2013 due to its actual operating and cash flow results during 2013 and its forecasted results over the next five years. We developed cash flows expected to be generated by the refinery, considering the probability of both current disposition of the refinery and realization through operations, using various scenarios of forecasted throughput volumes and refined product margins, with refined product margins based on our expectation of future margins coupled with historical margins realized by the refinery. The undiscounted cash flows exceeded the carrying amount of the refinery as of December 31, 2013; therefore, we concluded that the refinery was not impaired.
	Aruba Refinery
	In March 2012, we suspended the operations of the Aruba Refinery because of its inability to generate positive cash flows on a sustained basis subsequent to its restart in January 2011 and the sensitivity of its profitability to sour crude oil differentials, which had narrowed significantly in the fourth quarter of 2011. Shortly thereafter, we received a non-binding offer to purchase the refinery for $350 million, plus working capital as of the closing date. Because of our decision to suspend operations and the possibility of selling the refinery, we evaluated the refinery for potential impairment as of March 31, 2012 and concluded that it was impaired. We recognized an asset impairment loss of $595 million in March 2012. We did not, however, classify the Aruba Refinery as “held for sale” in our balance sheet because all of the accounting criteria required for that classification had not been met.
	In September 2012, we decided to reorganize the Aruba Refinery into a crude oil and refined products terminal in response to the withdrawal of the non-binding offer to purchase the refinery. We bifurcated the idled crude oil processing units and related infrastructure (refining assets) from the terminal assets and evaluated the refining assets for potential impairment as of September 30, 2012. We concluded that the refining assets were impaired and recognized an asset impairment loss of $308 million that was recorded in September 2012. We also recognized an asset impairment loss of $25 million related to materials and supplies inventories that supported the refining operations, resulting in a total asset impairment loss of $333 million in September 2012 related to the Aruba Refinery. The terminal assets were not impaired.
	We have continued to maintain the refining assets to allow them to be restarted and do not consider them to be abandoned. Therefore, we have not reflected the Aruba Refinery as a discontinued operation in our financial statements. It is possible, however, that we may abandon these assets in the future. Should we ultimately decide to abandon these assets, we may be required under our land lease agreement with the Government of Aruba to dismantle and remove the abandoned assets, which would require us to recognize an asset retirement obligation that would be immediately charged to expense. We do not expect these amounts to be material to our financial position or results of operations.
	Cancelled Capital Projects
	During 2012, we wrote down the carrying value of equipment associated with permanently cancelled capital projects at several of our refineries and recognized asset impairment losses of $65 million.
	Retail Stores
	During 2012, we evaluated certain of our convenience stores operated by our former retail segment for potential impairment and concluded that they were impaired, and we wrote down the carrying values of these stores to their estimated fair values and recognized asset impairment losses of $21 million.

Initial_Public_Offering_of_Val

Initial Public Offering of Valero Energy Partners LP	12 Months Ended
	Dec. 31, 2013
Noncontrolling Interest [Abstract]	'
INITIAL PUBLIC OFFERING OF VALERO ENERGY PARTNERS LP	'
	5	INITIAL PUBLIC OFFERING OF VALERO ENERGY PARTNERS LP
	In July 2013, we formed 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, which included a 2,250,000 common unit over-allotment option that was fully exercised by the underwriters. 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 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 was $375 million as of December 31, 2013, which can be used only to settle its obligations. The public’s ownership interest in VLP of $370 million is reflected in noncontrolling interests as of December 31, 2013.
	The following table is a reconciliation of net proceeds from the Offering (in millions):
	Total proceeds from the Offering	$	397
	Less offering costs	(28		)
	Net proceeds from the Offering	$	369
	We have agreements with VLP, which 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.

Receivables

Receivables	12 Months Ended
	Dec. 31, 2013
Receivables [Abstract]	'
RECEIVABLES	'
	6	RECEIVABLES
	Receivables consisted of the following (in millions):
		December 31,
		2013			2012
	Accounts receivable	$	8,650		$	8,061
	Commodity derivative and foreign currency	98			136
	contract receivables
	Notes receivable and other	49			26
		8,797			8,223
	Allowance for doubtful accounts	(46		)	(56		)
	Receivables, net	$	8,751		$	8,167
	Changes in the allowance for doubtful accounts consisted of the following (in millions):
		Year Ended December 31,
		2013			2012			2011
	Balance as of beginning of year	$	56		$	48		$	42
	Increase in allowance charged to expense	13			21			21
	Accounts charged against the allowance,	(23		)	(13		)	(14		)
	net of recoveries
	Foreign currency translation	—			—			(1		)
	Balance as of end of year	$	46		$	56		$	48

Inventories

Inventories	12 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
INVENTORIES	'
	7	INVENTORIES
	Inventories consisted of the following (in millions):
		December 31,
		2013		2012
	Refinery feedstocks	$	2,135	$	2,458
	Refined products and blendstocks	3,231		2,995
	Ethanol feedstocks and products	166		191
	Convenience store merchandise	—		112
	Materials and supplies	226		217
	Inventories	$	5,758	$	5,973
	During the years ended December 31, 2013, 2012, and 2011, we had net liquidations of LIFO inventory layers that were established in prior years, which decreased cost of sales in each of those years by $17 million, $134 million, and $247 million, respectively.
	As of December 31, 2013 and 2012, the replacement cost (market value) of LIFO inventories exceeded their LIFO carrying amounts by approximately $6.9 billion and $6.7 billion, respectively. As of December 31, 2013 and 2012, our non-LIFO inventories accounted for $851 million and $878 million, respectively, of our total inventories.

Property_Plant_and_Equipment

Property, Plant, and Equipment	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
PROPERTY, PLANT, AND EQUIPMENT	'
	8	PROPERTY, PLANT, AND EQUIPMENT
	Major classes of property, plant, and equipment, which include capital lease assets, consisted of the following (in millions):
			December 31,
			2013			2012
	Land		$	404		$	802
	Crude oil processing facilities		27,260			24,865
	Pipeline and terminal facilities		1,513			1,471
	Grain processing equipment		719			694
	Retail facilities		—			1,480
	Administrative buildings		800			734
	Other		2,109			1,457
	Construction in progress		1,128			2,629
	Property, plant, and equipment, at cost		33,933			34,132
	Accumulated depreciation		(8,226		)	(7,832		)
	Property, plant, and equipment, net		$	25,707		$	26,300
	We have miscellaneous assets under capital leases that primarily support our refining operations totaling $74 million and $83 million as of December 31, 2013 and 2012, respectively. Accumulated amortization on assets under capital leases was $35 million and $35 million, respectively, as of December 31, 2013 and 2012.
	Depreciation expense for the years ended December 31, 2013, 2012, and 2011 was $1.2 billion, $1.1 billion, and $1.1 billion, respectively.

Deferred_Charges_and_Other_Ass

Deferred Charges and Other Assets	12 Months Ended
	Dec. 31, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]	'
DEFERRED CHARGES AND OTHER ASSETS	'
	9	DEFERRED CHARGES AND OTHER ASSETS
	“Deferred charges and other assets, net” primarily includes turnaround and catalyst costs, which are deferred and amortized as discussed in Note 1. Amortization expense for deferred refinery turnaround and catalyst costs and other assets was $498 million, $459 million, and $444 million for the years ended December 31, 2013, 2012, and 2011, respectively.

Accrued_Expenses_and_Other_Lon

Accrued Expenses and Other Long-Term Liabilities	12 Months Ended
	Dec. 31, 2013
Accrued Expenses and Other Long-Term Liabilities [Abstract]	'
ACCRUED EXPENSES AND OTHER LONG-TERM LIABILITIES	'
	10	ACCRUED EXPENSES AND OTHER LONG-TERM LIABILITIES
	Accrued expenses and other long-term liabilities consisted of the following (in millions):
			Accrued						Other Long-
			Expenses						Term Liabilities
			December 31,
			2013			2012			2013		2012
	Defined benefit plan liabilities (see Note 14)		$	30		$	32		$	507	$	982
	Wage and other employee-related liabilities		257			282			97		91
	Uncertain income tax position liabilities,		—			—			205		391
	including related penalties and interest (see Note 16) (a)
	Environmental liabilities		24			27			277		242
	Accrued interest expense		90			96			—		—
	Derivative liabilities		13			14			—		—
	Asset retirement obligations		5			5			26		103
	Other accrued liabilities		103			134			217		321
	Accrued expenses and other long-term liabilities		$	522		$	590		$	1,329	$	2,130
	___________________________
	(a) As of December 31, 2013, our total liability for uncertain tax positions, including related penalties and interest, was $443 million, with $238 million classified as a current liability and reflected in “Income taxes payable” and the remaining $205 million classified as a long-term liability and reflected in “Other long-term liabilities” as detailed in this table. As of December 31, 2012, our total liability for uncertain tax positions, including related penalties and interest, was classified as a long-term liability and reflected in “Other long-term liabilities” as detailed in this table.
	Environmental Liabilities
	Changes in our environmental liabilities were as follows (in millions):
		Year Ended December 31,
		2013			2012			2011
	Balance as of beginning of year	$	269		$	274		$	268
	Pembroke Acquisition	—			—			30
	Additions to liability	67			23			18
	Reductions to liability	(1		)	(1		)	(5		)
	Payments, net of third-party recoveries	(28		)	(29		)	(35		)
	Separation of retail business	(4		)	—			—
	Foreign currency translation	(2		)	2			(2		)
	Balance as of end of year	$	301		$	269		$	274
	In connection with our Pembroke Acquisition, we assumed certain environmental liabilities including, but not limited to, certain remediation obligations, site restoration costs, and certain liabilities relating to soil and groundwater remediation. There were no significant environmental liabilities assumed in connection with the Meraux Acquisition. See Note 12 for further information regarding environmental matters.
	Asset Retirement Obligations
	We have asset retirement obligations with respect to certain of our refinery assets due to various legal obligations to clean and/or dispose of various component parts of each refinery at the time they are retired. However, these component parts can be used for extended and indeterminate periods of time as long as they are properly maintained and/or upgraded. It is our practice and current intent to maintain our refinery assets and continue making improvements to those assets based on technological advances. As a result, we believe that our refineries have indeterminate lives for purposes of estimating asset retirement obligations because dates or ranges of dates upon which we would retire refinery assets cannot reasonably be estimated at this time. When a date or range of dates can reasonably be estimated for the retirement of any component part of a refinery, we estimate the cost of performing the retirement activities and record a liability for the fair value of that cost using established present value techniques.
	Prior to the separation of our retail business, we also had asset retirement obligations for the removal of underground storage tanks (USTs) at owned and leased retail sites. There is no legal obligation to remove USTs while they remain in service. However, environmental laws in the U.S. and Canada require that unused USTs be removed within certain periods of time after the USTs are no longer in service, usually one to two years depending on the jurisdiction in which the USTs are located. We had previously estimated that USTs at our formerly owned retail sites would remain in service approximately 20 years and that we would then have an obligation to remove those USTs. For our formerly leased retail sites, our lease agreements generally required that we remove certain improvements, primarily USTs and signage, upon termination of the lease. All of the USTs and the related asset retirement obligations were retained by CST after the separation from us. Therefore, we have no asset retirement obligations in connection with the USTs subsequent to the separation of our retail business on May 1, 2013.
	Changes in our asset retirement obligations were as follows (in millions).
		Year Ended December 31,
		2013			2012			2011
	Balance as of beginning of year	$	108		$	87		$	101
	Additions to accrual	2			14			3
	Revisions in estimated cash flows	—			13			1
	Accretion expense	2			5			4
	Settlements	(1		)	(11		)	(22		)
	Separation of retail business	(80		)	—			—
	Balance as of end of year	$	31		$	108		$	87
	There are no assets that are legally restricted for purposes of settling our asset retirement obligations.
	One-Time Severance Benefits
	As described in Note 4, we decided to reorganize the Aruba Refinery into a crude oil and refined products terminal in September 2012 resulting in a decrease in required personnel for our operations in Aruba. We notified 495 employees in September 2012 of the termination of their employment effective November 15, 2012. Benefits to each terminated employee consisted primarily of a cash payment based on a formula that considered the employee’s current compensation and years of service, among other factors. We recognized a severance liability of $41 million in September 2012, which approximated fair value. We paid $31 million of these benefits in the fourth quarter of 2012. We paid the remaining termination benefits of $10 million in the first quarter of 2013. Total severance expense of $41 million is included in refining operating expenses for the year ended December 31, 2012 and relates to our refining segment.

Debt_and_Capital_Lease_Obligat

Debt and Capital Lease Obligations	12 Months Ended
	Dec. 31, 2013
Debt and Capital Lease Obligations [Abstract]	'
DEBT AND CAPITAL LEASE OBLIGATIONS	'
	11	DEBT AND CAPITAL LEASE OBLIGATIONS
	Debt, at stated values, and capital lease obligations consisted of the following (in millions):
		Final		December 31,
		Maturity		2013				2012
	Bank credit facilities	Various		$	—			$	—
	Senior Notes:
	4.50%	2015		400				400
	4.75%	2013		—				300
	4.75%	2014		200				200
	6.13%	2017		750				750
	6.13%	2020		850				850
	6.63%	2037		1,500				1,500
	6.70%	2013		—				180
	6.75%	2037		24				24
	7.20%	2017		200				200
	7.45%	2097		100				100
	7.50%	2032		750				750
	8.75%	2030		200				200
	9.38%	2019		750				750
	10.50%	2039		250				250
	Debentures:
	7.65%	2026		100				100
	8.75%	2015		75				75
	Gulf Opportunity Zone Revenue Bonds, Series 2010, 4.0%	2040		300				300
	Accounts receivable sales facility	2014		100				100
	Net unamortized discount, including fair value adjustments			(24		)		(29		)
	Total debt			6,525				7,000
	Capital lease obligations, including unamortized fair value adjustments			39				49
	Total debt and capital lease obligations			6,564				7,049
	Less current portion			(303		)		(586		)
	Debt and capital lease obligations, less current portion			$	6,261			$	6,463
	Credit Facilities
	Revolver
	We have a $3 billion revolving credit facility (the Revolver) with a group of financial institution lenders 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. We may request additional one-year extensions, subject to certain conditions, including the consent of the lenders holding the majority of the commitments and each lender extending its individual commitment. The Revolver includes sub-facilities for swingline loans and letters of credit. Outstanding borrowings under the Revolver bear interest, at our option, at either (a) the adjusted LIBO rate (as defined in the Revolver) for the applicable interest period in effect from time to time plus the applicable margin or (b) the alternate base rate (as defined in the Revolver) plus the applicable margin. The interest rate and fees under the Revolver are subject to adjustment based upon the credit ratings assigned to our senior unsecured debt. We are also charged various fees and expenses in connection with the Revolver, including facility fees and letter of credit fees. The Revolver has certain restrictive covenants, including a maximum debt-to-capitalization ratio of 60 percent. As of December 31, 2013 and 2012, our debt-to-capitalization ratios, calculated in accordance with the terms of the Revolver, were 12 percent and 23 percent, respectively. We believe that we will remain in compliance with this covenant.
	VLP Revolver
	On November 14, 2013, VLP entered into a $300 million senior unsecured revolving credit facility agreement (the VLP Revolver) with a group of lenders. 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. The VLP Revolver has a maturity date of December 2018 and VLP may request two additional one-year extensions, subject to certain conditions. VLP may terminate the VLP Revolver with notice to the lenders of at least three business days prior to termination. The VLP Revolver includes sub-facilities for swingline loans and letters of credit. VLP’s obligations under the VLP Revolver will be jointly and severally guaranteed by all of VLP’s directly owned material subsidiaries. As of December 31, 2013, the only guarantor under the VLP Revolver was Valero Partners Operating Co. LLC.
	Outstanding borrowings under the VLP Revolver bear interest, at VLP’s option, at either (a) the adjusted LIBO rate (as described in the VLP Revolver) for the applicable interest period in effect from time to time plus the applicable margin or (b) the alternate base rate (as described in the VLP Revolver) plus the applicable margin. The VLP Revolver also provides for customary fees, including administrative agent fees, participation fees, and commitment fees. The VLP Revolver contains 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.
	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. This facility replaced the maturing C$115 million Canadian revolving credit facility in November 2012.
	Activities of Our Credit Facilities
	During the years ended December 31, 2013 and 2011, we had no borrowings or repayments under the Revolver, the VLP Revolver, or under our Canadian credit facility. During the year ended December 31, 2012, we borrowed and repaid $1.1 billion under the Revolver and had no borrowings or repayments under the Canadian credit facility.
	We had outstanding letters of credit under our committed lines of credit as follows (in millions):
									Amounts Outstanding
			Borrowing Capacity				Expiration		December 31, 2013			December 31, 2012
	Letter of credit facilities		$	550			June 2014		$	278		$	418
	Revolver		$	3,000			Nov-18		$	59		$	59
	Canadian revolving credit facility		C$	50			November 2014		C$	10		C$	10
	We also have various other uncommitted short-term bank credit facilities. As of December 31, 2013 and 2012, we had no borrowings outstanding under our uncommitted short-term bank credit facilities; however, there were letters of credit outstanding under such facilities of $189 million and $275 million, respectively, for which we are charged letter of credit issuance fees. The uncommitted credit facilities have no commitment fees or compensating balance requirements.
	Bank Debt
	On March 20, 2013, in anticipation of the separation of our retail business as described in Note 3, CST entered into an $800 million senior secured credit agreement. This credit agreement was retained by CST after the separation from us. Therefore, we have no rights to obtain credit under nor any liabilities in connection with this credit agreement.
	On April 16, 2013, also in anticipation of the separation of our retail business, we borrowed $550 million under a short-term debt agreement with a third-party financial institution. On May 1, 2013, CST issued $550 million of its senior unsecured bonds to us, and we exchanged those bonds with the third-party financial institution in satisfaction of our short-term debt.
	On October 24, 2013, we borrowed $525 million under a short-term debt agreement with a third-party financial institution in anticipation of liquidating our retained interest in CST. This liquidation was completed on November 14, 2013 by transferring all remaining shares of CST common stock owned by us to the financial institution in exchange for $467 million of our short-term debt, and we paid the remaining $58 million of short-term debt in cash. After paying $19 million of fees, we recognized a $325 million nontaxable gain.
	Non-Bank Debt
	During the year ended December 31, 2013, the following activity occurred:
	•	in January 2013, we made a scheduled debt repayment of $180 million related to our 6.7% senior notes; and
	•	in June 2013, we made a scheduled debt repayment of $300 million related to our 4.75% senior notes.
	During the year ended December 31, 2012, the following activity occurred:
	•	in March 2012, we exercised the call provisions on our Series 1997 5.6%, Series 1998 5.6%, Series 1999 5.7%, Series 2001 6.65%, and Series 1997A 5.45% industrial revenue bonds, which were redeemed on May 3, 2012 for $108 million, or 100% of their outstanding stated values;
	•	in April 2012, we made scheduled debt repayments of $4 million related to our Series 1997A 5.45% industrial revenue bonds and $750 million related to our 6.875% notes; and
	•	in June 2012, we remarketed and received proceeds of $300 million related to the 4.0% Gulf Opportunity Zone Revenue Bonds Series 2010 issued by the Parish of St. Charles, State of Louisiana (GO Zone Bonds), which are due December 1, 2040, but are subject to mandatory tender on June 1, 2022.
	During the year ended December 31, 2011, the following activity occurred:
	•	in February 2011, we paid $300 million to acquire the GO Zone Bonds, which had originally been issued in December 2010. These bonds were remarketed in June 2012, as previously discussed;
	•	in February 2011, we made a scheduled debt repayment of $210 million related to our 6.75% senior notes;
•	in April 2011, we made scheduled debt repayments of $8 million related to our Series 1997A 5.45%, Series 1997B 5.4%, and Series 1997C 5.4% industrial revenue bonds;
•	in May 2011, we made a scheduled debt repayment of $200 million related to our 6.125% senior notes; and
•	in December 2011, we redeemed our Series 1997B 5.4% and Series 1997C 5.4% industrial revenue bonds for $56 million, or 100% of their stated values.
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. 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.
As of December 31, 2013 and 2012, $3.3 billion and $3.2 billion, respectively, of our accounts receivable composed the designated pool of accounts receivable included in the program. All amounts outstanding under the accounts receivable sales facility are reflected as debt on our balance sheets and proceeds and repayments are reflected as cash flows from financing activities on the statements of cash flows. Changes in the amounts outstanding under our accounts receivable sales facility were as follows (in millions):
	Year Ended December 31,
	2013				2012				2011
Balance as of beginning of year	$	100			$	250			$	100
Proceeds from the sale of receivables	—				1,500				150
Repayments	—				(1,650		)		—
Balance as of end of year	$	100			$	100			$	250
Capitalized Interest
For the years ended December 31, 2013, 2012, and 2011, capitalized interest was $118 million, $221 million, and $152 million, respectively.
Other Disclosures
In addition to the maximum debt-to-capitalization ratio applicable to the Revolver discussed above under “Bank Credit Facilities,” our bank credit facilities and other debt arrangements contain various customary restrictive covenants, including cross-default and cross-acceleration clauses.
Principal payments on our debt obligations and future minimum rentals on capital lease obligations as of December 31, 2013 were as follows (in millions):
	Debt				Capital
					Lease
					Obligations
2014	$	300			$	8
2015	475				8
2016	—				7
2017	950				7
2018	—				6
Thereafter	4,824				27
Net unamortized discount	(24		)		1
and fair value adjustments
Less interest expense	—				(25		)
Total	$	6,525			$	39

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
COMMITMENTS AND CONTINGENCIES	'
	12	COMMITMENTS AND CONTINGENCIES
	Operating Leases
	We have long-term operating lease commitments for land, office facilities and equipment, transportation equipment, time charters for ocean-going tankers and coastal vessels, dock facilities, and various facilities and equipment used in the storage, transportation, production, and sale of refinery feedstocks, refined product and corn inventories.
	Certain leases for processing equipment and feedstock and refined product storage facilities provide for various contingent payments based on, among other things, throughput volumes in excess of a base amount. Certain leases for vessels contain renewal options and escalation clauses, which vary by charter, and provisions for the payment of chartering fees, which either vary based on usage or provide for payments, in addition to established minimums, that are contingent on usage. In most cases, we expect that in the normal course of business, our leases will be renewed or replaced by other leases.
	As of December 31, 2013, our future minimum rentals and minimum rentals to be received under subleases for leases having initial or remaining noncancelable lease terms in excess of one year were as follows (in millions):
	2014	$	305
	2015	230
	2016	162
	2017	111
	2018	95
	Thereafter	321
	Total minimum rental payments	$	1,224
	Minimum rentals to be received	$	21
	under subleases
	Rental expense was as follows (in millions):
		Year Ended December 31,
		2013		2012			2011
	Minimum rental expense	$	574	$	508		$	523
	Contingent rental expense	7		23			23
	Total rental expense	581		531			546
	Less sublease rental income	—		(2		)	(2		)
	Net rental expense	$	581	$	529		$	544
	Purchase Obligations
	We have various purchase obligations under certain industrial gas and chemical supply arrangements (such as hydrogen supply arrangements), crude oil and other feedstock supply arrangements, and various throughput and terminalling agreements. We enter into these contracts to ensure an adequate supply of utilities and feedstock and adequate storage capacity to operate our refineries. Substantially all of our purchase obligations are based on market prices or adjustments based on market indices. Certain of these purchase obligations include fixed or minimum volume requirements, while others are based on our usage requirements. None of these obligations are associated with suppliers’ financing arrangements. These purchase obligations are not reflected as liabilities.
	Environmental Matters
	Hartford Matters
	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.
	Regulation of Greenhouse Gases
	The EPA began regulating greenhouse gases on January 2, 2011, under the Clean Air Act Amendments of 1990 (Clean Air Act). Any new construction or material expansions will require that, among other things, a greenhouse gas permit be issued at either or both the state or federal level in accordance with the Clean Air Act regulations, and we will be required to undertake a technology review to determine appropriate controls to be implemented with the project in order to reduce greenhouse gas emissions. The determination would be on a case by case basis, and the EPA has provided only general guidance for which controls will be required or delegated to the states through State Implementation Plans.
	Furthermore, the EPA is currently developing refinery-specific greenhouse gas regulations and performance standards that are expected to impose, on new and modified operations, greenhouse gas emission limits and/or technology requirements. These control requirements may affect a wide range of refinery operations but have not yet been delineated. Any such controls, however, could result in material increased compliance costs, additional operating restrictions for our business, and an increase in the cost of the products we produce, which could have a material adverse effect on our financial position, results of operations, and liquidity.
	Certain states and foreign governments have pursued regulation of greenhouse gases independent of the EPA. For example, the California Global Warming Solutions Act, also known as AB 32, directs the California Air Resources Board (CARB) to develop and issue regulations to reduce greenhouse gas emissions in California to 1990 levels by 2020. CARB has issued a variety of regulations aimed at reaching this goal, including a Low Carbon Fuel Standard (LCFS) as well as a statewide cap-and-trade program.
	•	The LCFS is currently subject to legal challenges in both state and federal court. The program currently is in effect, but the progressive reductions in the carbon intensity of fuel required under the LCFS currently are frozen at 2013 levels by order of a California state court until the CARB addresses certain deficiencies under the California Environmental Quality Act. Meanwhile, the Ninth Circuit Court of Appeals recently reversed a lower-court finding that the LCFS violates the Commerce Clause of the U.S. Constitution. It is anticipated that this case will be appealed to the U.S. Supreme Court, although it remains unclear whether the U.S. Supreme Court will agree to review the case.
	•	The California statewide cap-and-trade program became effective in 2012, with the auctioning of emission credits commencing in the fourth quarter of 2012. Initially, the program will apply only to stationary sources of greenhouse gases (e.g., refinery and power plant greenhouse gas emissions). Greenhouse gas emissions from fuels that we sell in California will be covered by the program beginning in 2015. We anticipate that free allocations of credits will be available in the early years of the program, but we expect that compliance costs will escalate as free allocations compromise a smaller portion of the progressive compliance obligation. Further, overall cap-and-trade program costs are expected to increase significantly beginning in 2015, when transportation fuels are included in the program.
	•	Complying with AB 32, including the LCFS and the cap-and-trade program, could result in material increased compliance costs for us, increased capital expenditures, increased operating costs, and additional operating restrictions for our business, resulting in an increase in the cost of, and decreases in the demand for, the products we produce. To the degree we are unable to recover these increased costs, these matters could have a material adverse effect on our financial position, results of operations, and liquidity.
	Title V Permitting Matters
	The EPA has objected to numerous Title V permits, including permits at our Port Arthur, Texas City, Meraux, Corpus Christi East, and McKee Refineries. Environmental activist groups have filed notices of intent to sue and/or sued the EPA, seeking to require the EPA to assume control of these permits from the Texas Commission on Environmental Quality. All of these developments have created substantial uncertainty regarding existing and future permitting. Because of this uncertainty, we are unable to determine the costs or effects of the EPA’s actions on our permitting activity. The greenhouse gas permitting regime and the EPA’s objections to Title V permits could result in material increased compliance costs for us, increased capital expenditures, increased operating costs, and additional operating restrictions for our business, resulting in an increase in the cost of, and decreases in the demand for, the products we produce, which could have a material adverse effect on our financial position, results of operations, and liquidity.
	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.
	Tax Matters
	General
	We are subject to extensive tax liabilities imposed by multiple jurisdictions, including income taxes, indirect taxes (excise/duty, sales/use, gross receipts, and value-added taxes), payroll taxes, franchise taxes, withholding taxes, and ad valorem taxes. New tax laws and regulations and changes in existing tax laws and regulations are continuously being enacted or proposed that could result in increased expenditures for tax liabilities in the future. Many of these liabilities are subject to periodic audits by the respective taxing authority. Subsequent changes to our tax liabilities as a result of these audits may subject us to interest and penalties.
	IRS Audits
	As of December 31, 2013, the Internal Revenue Service (IRS) has ongoing tax audits related to our U.S. federal tax returns from 2002 through 2011, as discussed in Note 16. We have received Revenue Agent Reports on our tax years for 2002 through 2009 and we are vigorously contesting many of the tax positions and assertions from the IRS. We are continuing to work with the IRS to resolve these matters and we believe that they will be resolved for amounts consistent with the recorded amounts of unrecognized tax benefits associated with these matters.
	Self-Insurance
	We are self-insured for certain medical and dental, workers’ compensation, automobile liability, general liability, and property liability claims up to applicable retention limits. Liabilities are accrued for self-insured claims, or when estimated losses exceed coverage limits, and when sufficient information is available to reasonably estimate the amount of the loss. These liabilities are included in accrued expenses and other long-term liabilities.

Equity

Equity	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
EQUITY	'
	13	EQUITY
	Share Activity
	For the years ended December 31, 2013, 2012, and 2011, activity in the number of shares of common stock and treasury stock was as follows (in millions):
		Common			Treasury
		Stock			Stock
	Balance as of December 31, 2010	673			(105	)
	Transactions in connection with
	stock-based compensation plans:
	Stock issuances	—			5
	Stock repurchases	—			(17	)
	Balance as of December 31, 2011	673			(117	)
	Transactions in connection with
	stock-based compensation plans:
	Stock issuances	—			6
	Stock repurchases	—			(6	)
	Stock repurchases under buyback program	—			(4	)
	Balance as of December 31, 2012	673			(121	)
	Transactions in connection with
	stock-based compensation plans:
	Stock issuances	—			6
	Stock repurchases	—			(6	)
	Stock repurchases under buyback program	—			(17	)
	Balance as of December 31, 2013	673			(138	)
	Preferred Stock
	We have 20 million shares of preferred stock authorized with a par value of $0.01 per share. No shares of preferred stock were outstanding as of December 31, 2013 and 2012.
	Treasury Stock
	We purchase shares of our common stock in open market transactions to meet our obligations under employee stock-based compensation plans. We also purchase shares of our common stock from our employees and non-employee directors in connection with the exercise of stock options, the vesting of restricted stock, and other stock compensation transactions.
	On February 28, 2008, our board of directors approved a $3 billion common stock purchase program, which is in addition to the remaining amount under a $6 billion program previously authorized. This additional $3 billion program has no expiration date. During 2013, we completed the $6 billion program. During the years ended December 31, 2013 and 2012, we purchased $692 million and $118 million, respectively, of our common stock under our programs. There were no stock repurchases under the buyback program during the year ended December 31, 2011. As of December 31, 2013, we have approvals under the $3 billion program to purchase approximately $2.6 billion of our common stock. In January 2014, we purchased 4 million shares for $208 million.
	Common Stock Dividends
	On January 22, 2014, our board of directors declared a quarterly cash dividend of $0.25 per common share payable March 12, 2014 to holders of record at the close of business on February 12, 2014.
	Income Tax Effects Related to Components of Other Comprehensive Income
	The following table reflects the tax effects allocated to each component of other comprehensive income for the years ended December 31, 2013, 2012, and 2011 (in millions):
		Before-Tax Amount				Tax Expense (Benefit)			Net Amount
	Year Ended December 31, 2013:
	Foreign currency translation adjustment	$	(98	)		$	—		$	(98	)
	Pension and other postretirement benefits:
	Gain arising during the year related to:
	Net actuarial gain	367				125			242
	Plan amendments	371				130			241
	(Gain) loss reclassified into income related to:
	Net actuarial loss	57				20			37
	Prior service credit	(33		)		(12		)	(21		)
	Settlement	1				—			1
	Net gain on pension and other	763				263			500
	postretirement benefits
	Derivative instruments designated and
	qualifying as cash flow hedges:
	Net loss arising during the year	(4		)		(2		)	(2		)
	Net loss reclassified into income	2				1			1
	Net loss on cash flow hedges	(2		)		(1		)	(1		)
	Other comprehensive income	$	663			$	262		$	401
		Before-Tax Amount				Tax Expense (Benefit)			Net Amount
	Year Ended December 31, 2012:
	Foreign currency translation adjustment	$	164			$	—		$	164
	Pension and other postretirement benefits:
	Loss arising during the year related to:
	Net actuarial loss	(228		)		(79		)	(149		)
	Prior service cost	(9		)		(3		)	(6		)
	(Gain) loss reclassified into income related to:
	Net actuarial loss	34				12			22
	Prior service credit	(20		)		(7		)	(13		)
	Settlement	12				—			12
	Net loss on pension and other	(211		)		(77		)	(134		)
postretirement benefits
Derivative instruments designated and
qualifying as cash flow hedges:
Net gain arising during the year	45				16			29
Net gain reclassified into income	(73		)		(26		)	(47		)
Net loss on cash flow hedges	(28		)		(10		)	(18		)
Other comprehensive income (loss)	$	(75	)		$	(87	)	$	12
Year Ended December 31, 2011:
Foreign currency translation adjustment	$	(122	)		$	—		$	(122	)
Pension and other postretirement benefits:
Loss arising during the year related to:
Net actuarial loss	(285		)		(100		)	(185		)
Prior service cost	(4		)		(1		)	(3		)
(Gain) loss reclassified into income related to:
Net actuarial loss	14				4			10
Prior service credit	(21		)		(7		)	(14		)
Settlement	4				1			3
Net loss on pension and other	(292		)		(103		)	(189		)
postretirement benefits
Derivative instruments designated and
qualifying as cash flow hedges:
Net gain arising during the year	32				11			21
Net gain reclassified into income	(3		)		(1		)	(2		)
Net gain on cash flow hedges	29				10			19
Other comprehensive loss	$	(385	)		$	(93	)	$	(292	)
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, 2010	$	623			$	(235	)	$	—		$	388
Other comprehensive income (loss)	(122		)		(189		)	19			(292		)
Balance as of December 31, 2011	501				(424		)	19			96
Other comprehensive income (loss)	164				(134		)	(18		)	12
Balance as of December 31, 2012	665				(558		)	1			108
Other comprehensive income (loss)	(98		)		483			(2		)	383
before reclassifications
Amounts reclassified from	—				17			1			18
accumulated other comprehensive
income (loss)
Net other comprehensive income	(98		)		500			(1		)	401
(loss)
Separation of retail business	(159		)		—			—			(159		)
Balance as of December 31, 2013	$	408			$	(58	)	$	—		$	350
Gains (losses) reclassified out of accumulated other comprehensive income (loss) and into net income were as follows (in millions):
Details about		Year Ended December 31, 2013				Affected Line
Accumulated Other						Item in the
Comprehensive Income						Statement of
(Loss) Components						Income
Amortization of items related to
defined benefit pension plans:
Net actuarial loss		$	(57	)		(a)
Prior service credit		33				(a)
Settlement		(1		)		(a)
		(25		)		Total before tax
		8				Tax benefit
		$	(17	)		Net of tax
Losses on cash flow hedges:
Commodity contracts		$	(2	)		Cost of sales
		(2		)		Total before tax
		1				Tax benefit
		$	(1	)		Net of tax
Total reclassifications for the year		$	(18	)		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 14. Net periodic benefit cost is reflected in operating expenses and general and administrative expenses.

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]	'
EMPLOYEE BENEFIT PLANS	'
	14 .	EMPLOYEE BENEFIT PLANS
	Defined Benefit Plans
	We have defined benefit pension plans, some of which are subject to collective bargaining agreements, that cover most of our employees. These plans provide eligible employees with retirement income based primarily on years of service and compensation during specific periods under final average pay and cash balance formulas. We fund our pension plans as required by local regulations. In the U.S., all qualified pension plans are subject to the Employee Retirement Income Security Act (ERISA) minimum funding standard. We typically do not fund or fully fund U.S. nonqualified and certain international pension plans that are not subject to funding requirements because contributions to these pension plans may be less economic and investment returns may be less attractive than our other investment alternatives.
	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 year ended December 31, 2013. The benefit of this remeasurement will be amortized into income through 2025.
	We also provide health care and life insurance benefits for certain retired employees through our postretirement benefit plans. Most of our employees become eligible for these benefits if, while still working for us, they reach normal retirement age or take early retirement. These plans are unfunded, and retired employees share the cost with us. Individuals who became our employees as a result of an acquisition became eligible for other postretirement benefits under our plans as determined by the terms of the relevant acquisition agreement.
	In October 2013, we announced changes to our U.S. retiree health care plans to utilize more efficient insurance products for Medicare eligible retirees. These plan changes resulted in a $43 million decrease to our benefit obligations for other postretirement benefit plans and a related increase to other comprehensive income during the year ended December 31, 2013.
	The changes in benefit obligation related to all of our defined benefit plans, the changes in fair value of plan assets(a), and the funded status of our defined benefit plans as of and for the years ended were as follows (in millions):
		Pension Plans								Other Postretirement
										Benefit Plans
		December 31,								December 31,
		2013				2012				2013			2012
	Changes in benefit obligation:
	Benefit obligation as of beginning of year	$	2,307			$	1,881			$	436		$	438
	Service cost	137				140				12			12
	Interest cost	86				93				18			21
	Participant contributions	—				—				15			14
	Plan amendments	(274		)		9				(43		)	—
	Curtailment gain	(6		)		(16		)		—			—
	Benefits paid	(170		)		(90		)		(37		)	(35		)
	Actuarial (gain) loss	(169		)		289				(77		)	(17		)
	Other	3				1				—			3
	Benefit obligation as of end of year	$	1,914			$	2,307			$	324		$	436
	Changes in plan assets(a):
	Fair value of plan assets as of beginning of year	$	1,729			$	1,487			$	—		$	—
	Actual return on plan assets	306				167				—			—
	Valero contributions	41				164				19			19
	Participant contributions	—				—				15			14
	Benefits paid	(170		)		(90		)		(37		)	(35		)
	Other	3				1				3			2
	Fair value of plan assets as of end of year	$	1,909			$	1,729			$	—		$	—
	Reconciliation of funded status(a):
	Fair value of plan assets as of end of year	$	1,909			$	1,729			$	—		$	—
	Less benefit obligation as of end of year	1,914				2,307				324			436
	Funded status as of end of year	$	(5	)		$	(578	)		$	(324	)	$	(436	)
	Accumulated benefit obligation	$	1,811			$	1,857			n/a			n/a
	___________________________
	(a)	Plan assets include only the assets associated with pension plans subject to legal minimum funding standards. Plan assets associated with U.S. nonqualified pension plans are not included here because they are not protected from our creditors and therefore cannot be reflected as a reduction from our obligations under the pension plans. As a result, the reconciliation of funded status does not reflect the effect of plan assets that exist for all of our defined benefit plans. See Note 20 for the assets associated with certain U.S. nonqualified pension plans.
	Amounts recognized in our balance sheet for our pension and other postretirement benefits plans as of December 31, 2013 and 2012 include (in millions):
		Pension Plans								Other Postretirement
										Benefit Plans
		2013				2012				2013			2012
	Deferred charges and other assets, net	$	208			$	—			$	—		$	—
	Accrued expenses	(11		)		(11		)		(19		)	(21		)
	Other long-term liabilities	(202		)		(567		)		(305		)	(415		)
		$	(5	)		$	(578	)		$	(324	)	$	(436	)
	The accumulated benefit obligations for certain of our pension plans exceed the fair values of the assets of those plans. For those plans, the table below presents the total projected benefit obligation, accumulated benefit obligation, and fair value of the plan assets (in millions).
		December 31,
		2013				2012
	Projected benefit obligation	$	215			$	250
	Accumulated benefit obligation	168				191
	Fair value of plan assets	3				31
	Benefit payments that we expect to pay, including amounts related to expected future services, and the anticipated Medicare subsidies that we expect to receive are as follows for the years ending December 31 (in millions):
		Pension				Other
		Benefits				Postretirement
						Benefits
	2014	$	100			$	19
	2015	125				19
	2016	116				20
	2017	127				20
	2018	146				21
	2019-2023	820				107
	We plan to contribute approximately $38 million to our pension plans and $19 million to our other postretirement benefit plans during 2014.
	The components of net periodic benefit cost were as follows for the years ended (in millions):
	Pension Plans											Other Postretirement
												Benefit Plans
	December 31,											December 31,
	2013				2012				2011			2013				2012			2011
Components of net periodic
benefit cost:
Service cost	$	137			$	140			$	104		$	12			$	12		$	11
Interest cost	86				93				85			18				21			22
Expected return on plan assets	(131		)		(125		)		(112		)	—				—			—
Amortization of:
Prior service cost (credit)	(19		)		3				2			(14		)		(23		)	(23		)
Net actuarial loss	57				33				12			—				1			2
Special charges (credits)	(5		)		(3		)		4			—				—			4
Net periodic benefit cost	$	125			$	141			$	95		$	16			$	11		$	16
Amortization of prior service cost (credit) shown in the above table was based on a straight-line amortization of the cost over the average remaining service period of employees expected to receive benefits under each respective plan. Amortization of the net actuarial loss shown in the above table was based on the straight-line amortization of the excess of the unrecognized loss over 10 percent of the greater of the projected benefit obligation or market-related value of plan assets (smoothed asset value) over the average remaining service period of active employees expected to receive benefits under each respective plan. Special credits in 2013 and 2012 include curtailments and settlements related to our employees at our Aruba Refinery, partially offset by settlements related to lump sum payments in excess of thresholds. Special charges in 2011 related to purchase accounting for the Meraux Acquisition and settlements related to lump sum payments in excess of thresholds.
Pre-tax amounts recognized in other comprehensive income for the years ended were as follows (in millions):
	Pension Plans											Other Postretirement
												Benefit Plans
	December 31,											December 31,
	2013				2012				2011			2013				2012			2011
Net gain (loss) arising during
the year:
Net actuarial gain (loss)	$	290			$	(245	)		$	(294	)	$	77			$	17		$	9
Prior service cost	—				(9		)		(4		)	—				—			—
Remeasurement due to plan amendments	328				—				—			43				—			—
Net (gain) loss reclassified into
income:
Net actuarial loss	57				33				12			—				1			2
Prior service cost (credit)	(19		)		3				2			(14		)		(23		)	(23		)
Curtailment and settlement loss	1				12				4			—				—			—
Total changes in other	$	657			$	(206	)		$	(280	)	$	106			$	(5	)	$	(12	)
comprehensive income (loss)
The pre-tax amounts in accumulated other comprehensive income as of December 31, 2013 and 2012 that have not yet been recognized as components of net periodic benefit cost were as follows (in millions):
	Pension Plans								Other Postretirement
									Benefit Plans
	2013				2012				2013			2012
Prior service cost (credit)	$	(233	)		$	21			$	(110	)	$	(81	)
Net actuarial loss (gain)	479				882				(44		)	34
Total	$	246			$	903			$	(154	)	$	(47	)
The following pre-tax amounts included in accumulated other comprehensive income as of December 31, 2013 are expected to be recognized as components of net periodic benefit cost during the year ending December 31, 2014 (in millions):
	Pension Plans				Other
					Postretirement
					Benefit Plans
Amortization of prior service credit	$	(22	)		$	(18	)
Amortization of net actuarial loss (gain)	35				(1		)
Total	$	13			$	(19	)
The weighted-average assumptions used to determine the benefit obligations as of December 31, 2013 and 2012 were as follows:
	Pension Plans						Other
							Postretirement
							Benefit Plans
	2013			2012			2013			2012
Discount rate	4.92	%		4.28	%		4.88	%		4.19	%
Rate of compensation increase	3.81	%		3.73	%		—	%		—	%
The discount rate assumption used to determine the benefit obligations as of December 31, 2013 and 2012 for the majority of our pension plans and other postretirement benefit plans was based on the Aon Hewitt AA Only Above Median yield curve and considered the timing of the projected cash outflows under our plans. This curve was designed by Aon Hewitt to provide a means for plan sponsors to value the liabilities of their pension plans or postretirement benefit plans. It is a hypothetical double-A yield curve represented by a series of annualized individual discount rates with maturities from one-half year to 99 years. Each bond issue underlying the curve is required to have an average rating of double-A when averaging all available ratings by Moody’s Investor Services (Moody’s), Standard and Poor’s Ratings Service (S&P), and Fitch Ratings. Only the bonds representing the 50 percent highest yielding issuances among those with average ratings of double-A are included in this yield curve.
We based our December 31, 2013, 2012, and 2011 discount rate assumption on the Aon Hewitt AA Only Above Median yield curve because we believe it is representative of the types of bonds we would use to settle our pension and other postretirement benefit plan liabilities as of those dates. We believe that the yields associated with the bonds used to develop this yield curve reflect the current level of interest rates.
The weighted-average assumptions used to determine the net periodic benefit cost for the years ended December 31, 2013, 2012, and 2011 were as follows:
	Pension Plans									Other Postretirement
										Benefit Plans
	2013			2012			2011			2013		2012			2011
Discount rate	4.33	%		5.08	%		5.4	%		4.19	%	4.97	%		5.22	%
Expected long-term rate of return	7.62	%		7.67	%		7.69	%		—	%	—	%		—	%
on plan assets
Rate of compensation increase	3.73	%		3.68	%		3.56	%		—	%	—	%		—	%
The assumed health care cost trend rates as of December 31, 2013 and 2012 were as follows:
	2013			2012
Health care cost trend rate assumed for the next year	7.39	%		7.32	%
Rate to which the cost trend rate was assumed to decline	5	%		5	%
(the ultimate trend rate)
Year that the rate reaches the ultimate trend rate	2020			2020
Assumed health care cost trend rates impact the amounts reported for retiree health care plans. A one percentage-point change in assumed health care cost trend rates would have the following effects on other postretirement benefits (in millions):
	1% Increase				1% Decrease
Effect on total of service and interest cost components	$	—			$	—
Effect on accumulated postretirement benefit obligation	3				(3		)
The tables below present the fair values of the assets of our pension plans (in millions) as of December 31, 2013 and 2012 by level of the fair value hierarchy. Assets categorized in Level 1 of the hierarchy are measured at fair value using a market approach based on quotations from national securities exchanges. Assets categorized in Level 2 of the hierarchy are measured at net asset value as a practical expedient for fair value. As previously noted, we do not fund or fully fund U.S. nonqualified and certain international pension plans that are not subject to funding requirements, and we do not fund our other postretirement benefit plans.
	Fair Value Measurements Using
	Quoted				Significant				Significant			Total as of
	Prices in				Other				Unobservable			December 31,
	Active				Observable				Inputs			2013
	Markets				Inputs				(Level 3)
	(Level 1)				(Level 2)
Equity securities:
U.S. companies(a)	$	529			$	—			$	—		$	529
International companies	155				—				—			155
Preferred stock	3				—				—			3
Mutual funds:
International growth	131				—				—			131
Index funds(b)	160				—				—			160
Corporate debt instruments	—				260				—			260
Government securities:
U.S. Treasury securities	81				—				—			81
Other government securities	—				79				—			79
Common collective trusts	—				373				—			373
Private fund	—				38				—			38
Insurance contracts	—				17				—			17
Interest and dividends receivable	5				—				—			5
Cash and cash equivalents	72				6				—			78
Total	$	1,136			$	773			$	—		$	1,909
______________________
See notes on page 102.
	Fair Value Measurements Using
	Quoted				Significant				Significant			Total as of
	Prices in				Other				Unobservable			December 31,
	Active				Observable				Inputs			2012
	Markets				Inputs				(Level 3)
	(Level 1)				(Level 2)
Equity securities:
U.S. companies(a)	$	441			$	—			$	—		$	441
International companies	135				—				—			135
Preferred stock	2				1				—			3
Mutual funds:
International growth	127				—				—			127
Index funds(b)	117				—				—			117
Corporate debt instruments	—				290				—			290
Government securities:
U.S. Treasury securities	107				—				—			107
Other government securities	3				65				—			68
Common collective trusts	—				294				—			294
Insurance contracts	—				17				—			17
Interest and dividends receivable	5				—				—			5
Cash and cash equivalents	98				27				—			125
Total	$	1,035			$	694			$	—		$	1,729
___________________
(a)	Equity securities are held in a wide range of industrial sectors, including consumer goods, information technology, healthcare, industrials, and financial services.
(b)	This class includes primarily investments in approximately 60 percent equities and 40 percent bonds.
The investment policies and strategies for the assets of our pension plans incorporate a well-diversified approach that is expected to earn long-term returns from capital appreciation and a growing stream of current income. This approach recognizes that assets are exposed to risk and the market value of the pension plans’ assets may fluctuate from year to year. Risk tolerance is determined based on our financial ability to withstand risk within the investment program and the willingness to accept return volatility. In line with the investment return objective and risk parameters, the pension plans’ mix of assets includes a diversified portfolio of equity and fixed-income investments. As of December 31, 2013, the target allocations for plan assets are 70 percent equity securities and 30 percent fixed income investments. Equity securities include international stocks and a blend of U.S. growth and value stocks of various sizes of capitalization. Fixed income securities include bonds and notes issued by the U.S. government and its agencies, corporate bonds, and mortgage-backed securities. The aggregate asset allocation is reviewed on an annual basis.
The expected long-term rate of return on plan assets is based on a forward-looking expected asset return model. This model derives an expected rate of return based on the target asset allocation of a plan’s assets. The underlying assumptions regarding expected rates of return for each asset class reflect Aon Hewitt’s best expectations for these asset classes. The model reflects the positive effect of periodic rebalancing among diversified asset classes. We select an expected asset return that is supported by this model.
Defined Contribution Plans
We have defined contribution plans that cover most of our employees. Our contributions to these plans are based on employees’ compensation and/or a partial match of employee contributions to the plans. Our contributions to these defined contribution plans were $62 million, $61 million, and $59 million for the years ended December 31, 2013, 2012, and 2011, respectively.

StockBased_Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
STOCK-BASED COMPENSATION	'
	15	STOCK-BASED COMPENSATION
	We maintain the 2011 Omnibus Stock Incentive Plan (the OSIP) under which various stock and stock-based awards are granted to employees and non-employee directors. Awards available under the OSIP include options to purchase shares of common stock, performance awards that vest upon the achievement of an objective performance goal, stock appreciation rights, and restricted stock that vests over a period determined by our compensation committee. The OSIP was approved by our stockholders on April 28, 2011. As of December 31, 2013, 15,340,981 shares of our common stock remained available to be awarded under the OSIP.
	We also maintain other stock-based compensation plans under which previously granted equity awards remain outstanding. No additional grants may be awarded under these plans.
	In connection with the separation of our retail business on May 1, 2013 (as further described in Note 3), we entered into an employee matters agreement with CST, which provides that employees of CST no longer participate in our benefit plans. Under this agreement, we made certain adjustments to the exercise price and the number of our share-based compensation awards, the effect of which preserved the intrinsic value of the awards immediately prior to the separation; no incremental value resulted from these adjustments. Also upon the separation, awards of restricted stock and performance shares made to Valero employees who became employees of CST were either vested or forfeited. These adjustments are reflected in the activity tables below.
	The following table reflects activity related to our stock-based compensation arrangements (in millions):
		Year Ended December 31,
		2013			2012				2011
	Stock-based compensation expense	$	64		$	58			$	58
	Tax benefit recognized on stock-based compensation expense	22			20				20
	Tax benefit realized for tax deductions resulting from exercises and vestings	66			45				35
	Effect of tax deductions in excess of recognized stock-based compensation expense reported as a financing cash flow	47			27				23
	Each of our stock-based compensation arrangements is discussed below.
	Stock Options
	Under the terms of our various stock-based compensation plans, the exercise price of options granted is not less than the fair market value of our common stock on the date of grant. Stock options become exercisable pursuant to the individual written agreements between the participants and us, usually in three equal annual installments beginning one year after the date of grant, with unexercised options generally expiring seven or ten years from the date of grant.
	The fair value of stock options granted during 2013 and 2012 were estimated using the Monte Carlo simulation model, as these options contain both a service condition and a market condition in order to be exercised. Prior to 2012, the fair value of each stock option grant was estimated on the grant date using the Black-Scholes option-pricing model. The expected life of options granted is the period of time from the grant date to the date of expected exercise or other expected settlement. The expected life for each of the years in the table below was calculated using the safe harbor provisions of SEC Staff Accounting Bulletin No. 107 and No. 110 related to share-based payments. Because the stock options granted in 2012 and later contain a market condition, historical exercise patterns did not provide a reasonable basis for estimating the expected life. Expected volatility is based on closing prices of our common stock for periods corresponding to the expected life of options granted. Expected dividend yield is based on annualized dividends at the date of grant. The risk-free interest rate used is the implied yield currently available from the U.S. Treasury zero-coupon issues with a remaining term equal to the expected life of the options at the grant date.
	A summary of the weighted-average assumptions used in our fair value measurements is presented in the table below.
		Year Ended December 31,
		2013		2012			2011
	Expected life in years	6		6			6
	Expected volatility	49.63	%	49.11	%		49.3	%
	Expected dividend yield	2.27	%	2.39	%		2.28	%
	Risk-free interest rate	1.77	%	0.85	%		1.44	%
	A summary of the status of our stock option awards is presented in the table below.
		Number of		Weighted-				Weighted-		Aggregate
		Stock		Average				Average		Intrinsic
		Options		Exercise				Remaining		Value
				Price Per				Contractual
				Share				Term
								(in years)		(in millions)
	Outstanding as of January 1, 2013	13,214,728		$	28.54
	Granted	201,300		39.67
	Exercised	(3,837,090	)	15.21
	Expired	(1,780,113	)	49.45
	Options granted on conversion related	759,268		28.84
	to separation of retail business
	Outstanding as of December 31, 2013	8,558,093		27.88				3.5		$	216
	Exercisable as of December 31, 2013	8,037,807		27.66				3.1		206
	The following table reflects activity related to our stock options granted (in millions, except per share data):
		Year Ended December 31,
		2013			2012				2011
	Weighted average grant-date fair value price per share	$	15.83		$	10.98			$	10.1
	Intrinsic value of stock options exercised	101			78				63
	Cash received from stock option exercises	59			59				49
	As of December 31, 2013, there was $1 million of unrecognized compensation cost related to outstanding unvested stock option awards, which is expected to be recognized over a weighted-average period of approximately two years.
	Restricted Stock
	Restricted stock is granted to employees and non-employee directors. Restricted stock granted to employees vests in accordance with individual written agreements between the participants and us, usually in equal annual installments over a period of three to five years beginning one year after the date of grant. Restricted stock granted to our non-employee directors generally vests in three years following the date of grant. A summary of the status of our restricted stock awards is presented in the table below.
		Number of		Weighted-
		Shares		Average
				Grant-Date
				Fair Value
				Per Share
	Nonvested shares as of January 1, 2013	2,920,288		$	24.76
	Granted	1,255,742		39.55
	Vested	(2,113,647	)	23.73
	Forfeited	(31,546	)	23.73
	Shares granted on conversion related	174,477		23.42
	to separation of retail business
	Nonvested shares as of December 31, 2013	2,205,314		32.23
	As of December 31, 2013, there was $40 million of unrecognized compensation cost related to outstanding unvested restricted stock awards, which is expected to be recognized over a weighted-average period of approximately two years. The total fair value of restricted stock that vested during the years ended December 31, 2013, 2012, and 2011 was $74 million, $47 million, and $32 million, respectively.
	Performance Awards
	Performance awards are issued to certain of our key employees and represent rights to receive shares of our common stock upon the achievement by us of an objective performance measure. The objective performance measure is our total shareholder return, which is ranked among the total shareholder returns of a defined peer group of companies. Our ranking determines the rate at which the performance awards convert into our common shares. Conversion rates can range from zero to 200 percent.
	Performance awards vest in equal one-third increments (tranches) on an annual basis. Our compensation committee establishes the peer group of companies for each tranche of awards at the beginning of the one year vesting period for that tranche. Therefore, performance awards are not considered to be granted for accounting purposes until our compensation committee establishes the peer group of companies for each tranche of awards. The fair value of each tranche of awards is determined at the time the awards are considered to be granted and is based on the expected conversion rate for those awards and the fair value per share. Fair value per share is equal to the market price of our common stock on the grant date reduced by expected dividends over that tranche’s vesting period.
	A summary of the status of our performance awards considered granted is presented below.
	Nonvested		Vested
	Awards		Awards
Awards outstanding as of January 1, 2013	989,414		208,916
Granted	415,317		—
Vested	(442,274	)	442,274
Converted	—		(534,515	)
Forfeited	(50,076	)	(116,675	)
Shares granted on conversion related	34,784		—
to separation of retail business
Awards outstanding as of December 31, 2013	947,165		—
There were three tranches of performance awards granted during the year ended December 31, 2013 as follows:
	Awards		Expected		Fair Value
	Granted		Conversion		Per Share
			Rate
Third tranche of 2011 awards	227,565		100%		$	38.77
Second tranche of 2012 awards	105,030		100%		38.77
First tranche of 2013 awards	82,722		100%		38.77
Total	415,317
As of December 31, 2013, there was $16 million of unrecognized compensation cost related to outstanding unvested performance awards, which will be recognized during 2014. The total fair value of performance awards that vested during the years ended December 31, 2013, 2012, and 2011 was $12 million, $3 million, and $4 million, respectively.
Performance awards converted during the year ended December 31, 2013 were as follows:
	Vested		Actual		Number of			Awards
	Awards		Conversion		Shares			Forfeited
	Converted		Rate		Issued
2010 awards	417,833		100%		417,833			—
2011 awards	233,357		50%		116,682			116,675
Total	651,190				534,515			116,675

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
INCOME TAXES	'
	16	INCOME TAXES
	Income Tax Expense
	Income from continuing operations before income tax expense from U.S. and international operations was as follows (in millions):
		Year Ended December 31,
		2013			2012			2011
	U.S. operations	$	3,531		$	4,015		$	3,190
	International operations	451			(309		)	132
	Income from continuing operations before income tax expense	$	3,982		$	3,706		$	3,322
	The following is a reconciliation of income tax expense computed by applying the U.S. federal statutory income tax rate (35 percent for all years presented) to actual income tax expense related to continuing operations (in millions):
		Year Ended December 31,
		2013			2012			2011
	Federal income tax expense	$	1,394		$	1,297		$	1,163
	at the U.S. federal statutory rate
	U.S. state income tax expense,	62			64			29
	net of U.S. federal income tax effect
	U.S. manufacturing deduction	(36		)	(33		)	(28		)
	International operations	(71		)	266			46
	Permanent differences	(104		)	20			8
	Change in tax law	(32		)	—			—
	Other, net	41			12			8
	Income tax expense	$	1,254		$	1,626		$	1,226
	The variation in the customary relationship between income tax expense and income from continuing operations before income tax expense for the year ended December 31, 2013 was primarily due to the $325 million nontaxable gain on the disposition of our retained interest in CST as described in Notes 3 and 11. For the year ended December 31, 2012, the variation in the customary relationship between income tax expense and income from continuing operations before income tax expense was primarily due to not recognizing the tax benefit associated with the asset impairment loss of $928 million related to the Aruba Refinery, as described in Note 4, as we do not expect to realize this tax benefit.
	There were no discontinued operations or related income tax benefit for the years ended December 31, 2013 and 2012. The income tax benefit related to discontinued operations for the year ended December 31, 2011 was $4 million.
	Components of income tax expense related to continuing operations were as follows (in millions):
		Year Ended December 31,
		2013			2012			2011
	Current:
	U.S. federal	$	635		$	515		$	562
	U.S. state	36			22			13
	International	82			126			186
	Total current	753			663			761
	Deferred:
	U.S. federal	459			854			527
	U.S. state	59			77			32
	International	(17		)	32			(94		)
	Total deferred	501			963			465
	Income tax expense	$	1,254		$	1,626		$	1,226
	Deferred Income Tax Assets and Liabilities
	The tax effects of significant temporary differences representing deferred income tax assets and liabilities were as follows (in millions):
		December 31,
		2013			2012
	Deferred income tax assets:
	Tax credit carryforwards	$	48		$	61
	Net operating losses (NOLs)	338			247
	Inventories	264			258
	Property, plant, and equipment	8			78
	Compensation and employee benefit liabilities	178			383
	Environmental liabilities	92			83
	Other	187			157
	Total deferred income tax assets	1,115			1,267
	Less: Valuation allowance	(347		)	(304		)
	Net deferred income tax assets	768			963
	Deferred income tax liabilities:
	Property, plant, and equipment	6,536			6,143
	Deferred turnaround costs	331			300
	Inventories	310			381
	Investments, primarily in VLP and DGD	94			—
	Other	81			103
	Total deferred income tax liabilities	7,352			6,927
	Net deferred income tax liabilities	$	6,584		$	5,964
	We had the following income tax credit and loss carryforwards as of December 31, 2013 (in millions):
		Amount			Expiration
	U.S. state income tax credits	$	71		2014 through 2027
U.S. state NOLs (gross amount)	5,609			2014 through 2033
International NOLs	1,289			Unlimited
We have recorded a valuation allowance as of December 31, 2013 and 2012 due to uncertainties related to our ability to utilize some of our deferred income tax assets, primarily consisting of certain U.S. state income tax credits and NOLs, and international NOLs, before they expire. The valuation allowance is based on our estimates of taxable income in the various jurisdictions in which we operate and the period over which deferred income tax assets will be recoverable. During 2013, the valuation allowance increased by $43 million, primarily due to increases in U.S. state NOLs. The realization of net deferred income tax assets recorded as of December 31, 2013 is primarily dependent upon our ability to generate future taxable income in certain U.S. states and international jurisdictions.
Should we ultimately recognize tax benefits related to the valuation allowance for deferred income tax assets as of December 31, 2013, such amounts will be allocated as follows (in millions):
Income tax benefit	$	340
Additional paid-in capital	7
Total	$	347
Deferred income taxes have not been provided on the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and the respective tax bases of our international subsidiaries based on the determination that such differences are essentially permanent in duration in that the earnings of these subsidiaries are expected to be indefinitely reinvested in the international operations. As of December 31, 2013, the cumulative undistributed earnings of these subsidiaries were approximately $3.5 billion. If those earnings were not considered indefinitely reinvested, deferred income taxes would have been recorded after consideration of U.S. foreign tax credits. It is not practicable to estimate the amount of additional tax that might be payable on those earnings, if distributed.
Unrecognized Tax Benefits
The following is a reconciliation of the change in unrecognized tax benefits, excluding related penalties, interest (net of the U.S. federal and state income tax effects) and the U.S. federal income tax effect of state unrecognized tax benefits (in millions):
	Year Ended December 31,
	2013			2012			2011
Balance as of beginning of year	$	341		$	326		$	330
Additions based on tax positions related to the current year	64			11			14
Additions for tax positions related to prior years	576			40			55
Reductions for tax positions related to prior years	(26		)	(36		)	(66		)
Reductions for tax positions related to the lapse of	(4		)	—			(3		)
applicable statute of limitations
Settlements	(1		)	—			(4		)
Balance as of end of year	$	950		$	341		$	326
The reconciliation of the change in unrecognized tax benefits for the year ended December 31, 2013 includes $556 million of additions for tax positions related to prior years for tax refunds that we intend to claim by amending our income tax returns for 2005 through 2012 and Premcor Inc.’s separate income tax return for 2005. We intend to propose that incentive payments received from the U.S. federal government for blending biofuels into refined products be excluded from taxable income during these periods. However, due to the complexity of this matter and uncertainties with respect to the interpretation of the Internal Revenue Code, we concluded that the $556 million refund claim cannot be recognized in our financial statements as of December 31, 2013. As a result, this amount is not included in our uncertain tax position liabilities as of December 31, 2013, even though it is reflected in the table above.
The following is a reconciliation of unrecognized tax benefits reflected in the table above to our uncertain tax position liabilities as of December 31, 2013 and 2012 that are reflected in Note 10 (in millions):
	December 31,
	2013			2012
Unrecognized tax benefits	$	950		$	341
Tax refund claim not recognized in our financial statements	(556		)	—
Penalties, interest (net of U.S. federal and state income tax	49			50
effect), and the U.S. federal income tax effect of state
unrecognized tax benefits
Uncertain tax position liabilities	$	443		$	391
As of December 31, 2013 and 2012, there were $763 million and $144 million, respectively, of unrecognized tax benefits that if recognized would affect our annual effective tax rate. During the next 12 months, it is reasonably possible that tax audit resolutions could reduce unrecognized tax benefits by between $100 million and $180 million, either because the tax positions are sustained on audit or because we agree to their disallowance. We do not expect these reductions to have a significant impact on our financial statements because such reductions would not significantly affect our annual effective rate.
During the years ended December 31, 2013, 2012, and 2011, we recognized $12 million, $23 million, and $1 million in penalties and interest, which is reflected within income tax expense. Accrued penalties and interest totaled $145 million and $133 million as of December 31, 2013 and 2012, respectively, excluding the U.S. federal and state income tax effects related to interest.
Tax Returns Under Audit
As of December 31, 2013, our tax years for 2002 through 2011 and Premcor Inc.’s separate tax years for 2004 and 2005 were under audit by the IRS. Premcor Inc. was merged into Valero effective September 1, 2005. The IRS has proposed adjustments to our taxable income for certain open years. We are protesting the proposed adjustments and do not expect that the ultimate disposition of these adjustments will result in a material change to our financial position, results of operations, or liquidity. We are continuing to work with the IRS to resolve these matters and we believe that they will be resolved for amounts consistent with recorded amounts of unrecognized tax benefits associated with these matters.
In January 2014, we paid the Premcor Inc. final IRS assessment for the tax years 2004 and 2005 and closed the audit related to all proposed adjustments. The amount paid was consistent with the recorded amount of unrecognized tax benefits associated with that audit.

Earnings_Per_Common_Share

Earnings Per Common Share	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
EARNINGS PER COMMON SHARE	'
	17	EARNINGS PER COMMON SHARE
	Earnings per common share from continuing operations were computed as follows (dollars and shares in millions, except per share amounts):
		Year Ended December 31,
		2013						2012				2011
		Restricted			Common			Restricted		Common		Restricted		Common
		Stock			Stock			Stock		Stock		Stock		Stock
	Earnings per common share from continuing operations:
	Net income attributable to Valero stockholders from continuing operations				$	2,720				$	2,083			$	2,097
	Less dividends paid:
	Common stock				460					358				168
	Nonvested restricted stock				2					2				1
	Undistributed earnings				$	2,258				$	1,723			$	1,928
	Weighted-average common shares outstanding	3			542			3		550		3		563
	Earnings per common share from continuing operations:
	Distributed earnings	$	0.85		$	0.85		$	0.65	$	0.65	$	0.3	$	0.3
	Undistributed earnings	4.14			4.14			3.12		3.12		3.4		3.4
	Total earnings per common share from continuing operations	$	4.99		$	4.99		$	3.77	$	3.77	$	3.7	$	3.7
	Earnings per common share from continuing operations – assuming dilution:
	Net income attributable to Valero stockholders from continuing operations				$	2,720				$	2,083			$	2,097
	Weighted-average common shares outstanding				542					550				563
	Common equivalent shares:
	Stock options				4					4				4
	Performance awards and nonvested restricted stock				2					2				2
	Weighted-average common shares outstanding –				548					556				569
	assuming dilution
	Earnings per common share from continuing operations – assuming dilution				$	4.97				$	3.75			$	3.69
	The following table reflects potentially dilutive securities (in millions) that were excluded from the calculation of “earnings per common share from continuing operations – assuming dilution” as the effect of including such securities would have been antidilutive. These potentially dilutive securities included stock options for which the exercise prices were greater than the average market price of our common shares during each respective reporting period.
		Year Ended December 31,
		2013		2012			2011
	Stock options	1		4			6

Segment_Information

Segment Information	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
SEGMENT INFORMATION	'
	18	SEGMENT INFORMATION
	We have two reportable segments, refining and ethanol, as of December 31, 2013. Prior to May 1, 2013, we also had a retail segment. As discussed in Note 3, we completed the separation of our retail business on May 1, 2013. Segment information 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.
	Our refining segment includes refining operations, wholesale marketing, product supply and distribution, and transportation operations in the U.S., Canada, the U.K., Aruba, and Ireland. Our ethanol segment primarily includes sales of internally produced ethanol and distillers grains. The retail segment included company-operated convenience stores in the U.S. and Canada; filling stations, truckstop facilities, cardlock facilities, and home heating oil operations in Canada; and credit card operations in the U.S. Operations that are not included in any of the reportable segments are included in the corporate category.
	The reportable segments are strategic business units that offer different products and services. They are managed separately as each business requires unique technology and marketing strategies. Performance is evaluated based on operating income. Intersegment sales are generally derived from transactions made at prevailing market rates.
	The following table reflects activity related to continuing operations (in millions):
		Refining		Retail		Ethanol			Corporate			Total
	Year ended December 31, 2013:
	Operating revenues from external	$	129,064	$	3,896	$	5,114		$	—		$	138,074
	customers
	Intersegment revenues	2,876		—		128			—			3,004
	Depreciation and amortization expense	1,566		41		45			68			1,720
	Operating income (loss)	4,217		81		491			(826		)	3,963
	Total expenditures for long-lived assets	2,597		62		33			65			2,757
	Year ended December 31, 2012:
	Operating revenues from external	122,925		12,008		4,317			—			139,250
	customers
	Intersegment revenues	8,946		—		115			—			9,061
	Depreciation and amortization expense	1,370		119		42			43			1,574
	Operating income (loss)	4,450		348		(47		)	(741		)	4,010
	Total expenditures for long-lived assets	3,147		164		36			66			3,413
	Year ended December 31, 2011:
	Operating revenues from external	109,138		11,699		5,150			—			125,987
	customers
	Intersegment revenues	8,665		—		145			—			8,810
	Depreciation and amortization expense	1,338		115		39			42			1,534
	Operating income (loss)	3,516		381		396			(613		)	3,680
	Total expenditures for long-lived assets	2,708		134		32			113			2,987
	Our principal products include conventional and CARB gasolines, RBOB (reformulated gasoline blendstock for oxygenate blending), ultra-low-sulfur diesel, and gasoline blendstocks. We also produce a substantial slate of middle distillates, jet fuel, and petrochemicals, in addition to lube oils and asphalt. Other product revenues include such products as gas oils, No. 6 fuel oil, and petroleum coke. Operating revenues from external customers for our principal products were as follows (in millions):
		Year Ended December 31,
		2013		2012		2011
	Refining:
	Gasolines and blendstocks	$	57,806	$	55,647	$	49,019
	Distillates	56,921		51,504		43,713
	Petrochemicals	4,281		3,908		4,253
	Lubes and asphalts	1,643		2,033		1,948
	Other product revenues	8,413		9,833		10,205
	Total refining operating revenues	129,064		122,925		109,138
	Retail:
	Fuel sales (gasoline and diesel)	3,226		10,045		9,730
	Merchandise sales and other	524		1,649		1,635
	Home heating oil	146		314		334
	Total retail operating revenues	3,896		12,008		11,699
	Ethanol:
	Ethanol	4,245		3,545		4,436
	Distillers grains	869		772		714
	Total ethanol operating revenues	5,114		4,317		5,150
	Total operating revenues	$	138,074	$	139,250	$	125,987
	Operating revenues by geographic area are shown in the table below (in millions). The geographic area is based on location of customer and no customer accounted for more than 10 percent of our operating revenues.
		Year Ended December 31,
		2013		2012		2011
	U.S.	$	100,418	$	100,733	$	98,806
	Canada	9,974		10,376		10,110
	U.K.	11,358		10,779		4,297
	Other countries	16,324		17,362		12,774
	Total operating revenues	$	138,074	$	139,250	$	125,987
	Long-lived assets include property, plant, and equipment, intangible assets, and certain long-lived assets included in “deferred charges and other assets, net.” Geographic information by country for long-lived assets consisted of the following (in millions):
		December 31,
		2013		2012
	U.S.	$	23,572	$	23,760
	Canada	2,260		2,639
	U.K.	1,148		1,110
	Aruba	53		41
	Ireland	26		37
Total long-lived assets	$	27,059	$	27,587
Total assets by reportable segment were as follows (in millions):
	December 31,
	2013		2012
Refining	$	40,834	$	38,858
Retail	—		2,043
Ethanol	889		929
Corporate	5,537		2,647
Total assets	$	47,260	$	44,477

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information	12 Months Ended
	Dec. 31, 2013
Supplemental Cash Flow Information [Abstract]	'
SUPPLEMENTAL CASH FLOW INFORMATION	'
	19	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):
		Year Ended December 31,
		2013			2012			2011
	Decrease (increase) in current assets:
	Receivables, net	$	(753	)	$	437		$	(3,110	)
	Inventories	(13		)	(282		)	643
	Income taxes receivable	10			51			128
	Prepaid expenses and other	2			(28		)	(2		)
	Increase (decrease) in current liabilities:
	Accounts payable	977			(113		)	2,004
	Accrued expenses	53			13			(18		)
	Taxes other than income taxes	337			(260		)	312
	Income taxes payable	309			(120		)	124
	Changes in current assets and current liabilities	$	922		$	(302	)	$	81
	The above changes in current assets and current liabilities differ from changes between amounts reflected in the applicable balance sheets for the respective periods for the following reasons:
	•	the amounts shown above exclude changes in cash and temporary cash investments, deferred income taxes, and current portion of debt and capital lease obligations, as well as the effect of certain noncash investing and financing activities discussed below;
	•	the amounts shown above for the year ended December 31, 2013 exclude the change in current assets and current liabilities resulting from the separation of our retail business as described in Note 3;
	•	the amounts shown above exclude the current assets and current liabilities acquired in connection with the Meraux Acquisition in October 2011 and the Pembroke Acquisition in August 2011;
	•	amounts accrued for capital expenditures and deferred turnaround and catalyst costs are reflected in investing activities when such amounts are paid;
	•	amounts accrued for common stock purchases in the open market that are not settled as of the balance sheet date are reflected in financing activities when the purchases are settled and paid; and
	•	certain differences between balance sheet changes and the changes reflected above result from translating foreign currency denominated balances at the applicable exchange rates as of each balance sheet date.
	There were no significant noncash investing activities for the years ended December 31, 2013, 2012 and 2011.
	Noncash financing activities for the year ended December 31, 2013 included the exchange of CST’s senior unsecured bonds and the exchange of all of our remaining shares of CST common stock with third-party financial institutions in satisfaction of our short-term debt agreements as described in Note 11. There were no significant noncash financing activities for the years ended December 31, 2012 and 2011.
	Cash flows related to interest and income taxes paid were as follows (in millions):
		Year Ended December 31,
		2013			2012			2011
	Interest paid in excess of amount capitalized	$	361		$	302		$	397
	Income taxes paid, net	387			705			486

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
FAIR VALUE MEASUREMENTS	'
	20	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 December 31, 2013 and 2012.
	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.
		31-Dec-13
								Total Gross Fair Value		Effect of Counter-party Netting			Effect of Cash Collateral Netting			Net Carrying Value on Balance Sheet		Cash Collateral Paid or Received Not Offset
		Fair Value Hierarchy
		Level 1		Level 2		Level 3
	Assets:
	Commodity derivative contracts	$	499	$	38	$	—	$	537	$	(505	)	$	(7	)	$	25	$	—
	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 contracts	$	492	$	24	$	—	$	516	$	(505	)	$	(6	)	$	5	$	(76	)
	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 contracts	8		—		—		8		n/a			n/a			8		n/a
	Total	$	500	$	40	$	—	$	540	$	(505	)	$	(6	)	$	29
		December 31, 2012
								Total Gross Fair Value		Effect of Counter-party Netting			Effect of Cash Collateral Netting			Net Carrying Value on Balance Sheet		Cash Collateral Paid or Received Not Offset
		Fair Value Hierarchy
		Level 1		Level 2		Level 3
	Assets:
	Commodity derivative contracts	$	1,143	$	60	$	—	$	1,203	$	(1,189	)	$	—		$	14	$	—
	Physical purchase contracts	—		11		—		11		n/a			n/a			11		n/a
	Foreign currency contracts	1		—		—		1		n/a			n/a			1		n/a
	Investments of certain benefit plans	87		—		11		98		n/a			n/a			98		n/a
	Total	$	1,231	$	71	$	11	$	1,313	$	(1,189	)	$	—		$	124
	Liabilities:
	Commodity derivative contracts	$	1,138	$	70	$	—	$	1,208	$	(1,189	)	$	(13	)	$	6	$	(114	)
	Biofuels blending obligation	—		10		—		10		n/a			n/a			10		n/a
	Foreign currency contracts	1		—		—		1		n/a			n/a			1		n/a
	Total	$	1,139	$	80	$	—	$	1,219	$	(1,189	)	$	(13	)	$	17
	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 21, 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 21, 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 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 21 under “Compliance Program 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 December 31, 2013 and 2012 that were measured at fair value on a recurring basis.
	The following is a reconciliation of the beginning and ending balances (in millions) for fair value measurements developed using significant unobservable inputs (Level 3).
		Investments of						Other Investments
		Certain
		Benefit Plans
		2013		2012		2011		2013		2012			2011
	Balance as of beginning of year	$	11	$	11	$	10	$	—	$	—		$	—
	Purchases	—		—		1		—		—			21
	Total losses included in refining operating expense	—		—		—		—		—			(21		)
	Transfers in and/or out of Level 3	—		—		—		—		—			—
	Balance as of end of year	$	11	$	11	$	11	$	—	$	—		$	—
	The amount of total losses included in income attributable to the change in unrealized losses relating to assets still held at end of year	$	—	$	—	$	—	$	—	$	—		$	(21	)
	Nonrecurring Fair Value Measurements
	There were no assets or liabilities that were measured at fair value on a nonrecurring basis as of December 31, 2013.
	The table below presents the fair value of certain assets that were measured at fair value on a nonrecurring basis as of December 31, 2012 (in millions) and the related impairment losses recognized. See Note 4 for our impairment analysis for these assets.
								Total		Total Losses
								Fair Value		Recognized
as of								During the
December 31,								Year Ended
	Fair Value Hierarchy						2012		December 31,
	Level 1		Level 2		Level 3				2012
Assets:
Long-lived assets of	$	—	$	—	$	—	$	—	$	903
the Aruba Refinery
Materials and supplies	—		—		—		—		25
inventories of
the Aruba Refinery
Cancelled capital projects	—		—		2		2		65
Property, plant, and equipment	—		—		8		8		21
of convenience stores
There were no liabilities that were measured at fair value on a nonrecurring basis as of December 31, 2012.
Other Financial Instruments
Financial instruments that we recognize in our balance sheets at their carrying amounts are shown in the table below (in millions):
	December 31, 2013				December 31, 2012
	Carrying		Fair		Carrying		Fair
	Amount		Value		Amount		Value
Financial assets:
Cash and temporary cash investments	$	4,292	$	4,292	$	1,723	$	1,723
Financial liabilities:
Debt (excluding capital leases)	6,525		7,659		7,000		8,621
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	12 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
PRICE RISK MANAGEMENT ACTIVITIES	'
	21	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 20), 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 in 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 December 31, 2013, 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		11,857
	Futures – short		12,169
	Physical contracts – long		312
	•	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 December 31, 2013, 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		7,629
	Futures – short		2,314
	Physical contracts – short		5,315
	•	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, 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 December 31, 2013, 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		7,261			—
	Swaps – short		7,276			—
	Futures – long		42,205			—
	Futures – short		52,158			—
	Corn:
	Futures – long		17,110			—
	Futures – short		26,095			145
	Physical contracts – long		12,554			156
	Soybean oil:
	Futures – short		25,320			—
	•	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 December 31, 2013, 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		25,200			—
	Swaps – short		25,200			—
	Futures – long		84,766			3,490
	Futures – short		84,397			3,665
	Options – long		28,850			—
	Options – short		28,600			—
	Natural gas:
	Futures – long		600			1,000
	Futures – short		1,150			—
Options – short		250			—
Corn:
Futures – long		435			—
Futures – short		435			—
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 December 31, 2013 and 2012, or during the years ended December 31, 2013, 2012, or 2011.
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 these 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 December 31, 2013, we had commitments to purchase $716 million of U.S. dollars. The majority of these commitments matured on or before January 31, 2014 resulting in a gain of $12 million in the first 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. For the years ended December 31, 2013, 2012, and 2011, the cost of meeting our obligations under these compliance programs was $517 million, $250 million, and $231 million, respectively. These amounts are reflected in cost of sales.
Maintaining Minimum Inventory Quantities
In the U.K., we are required to maintain a minimum quantity of crude oil and refined products as a reserve against shortages or interruptions in the supply of these products. To the degree we decide not to physically hold the minimum quantity of crude oil and refined products, we must purchase Compulsory Stock Obligation (CSO) tickets from other suppliers of refined products in the U.K. or other European Union (EU) member countries, and we make economic decisions as to the cost of maintaining certain quantities of crude oil and refined products versus the cost of purchasing CSO tickets. We have not entered into derivative instruments to manage the price volatility of CSO tickets. For the years ended December 31, 2013 and 2012, the cost of purchasing CSO tickets to help meet our obligations under this compliance program was $3 million and $8 million, respectively, and these amounts were reflected in cost of sales. We had no obligations under this compliance program prior to completing the Pembroke Acquisition in 2011.
Emission Allowances
Our Pembroke Refinery is subject to a maximum amount of carbon dioxide that it can emit each year under the EU Emissions Trading Scheme. Under this cap-and-trade program, we purchase emission allowances on the open market for the difference between the amount of carbon dioxide emitted and the maximum amount allowed under the program. Therefore, we are exposed to the volatility in the market price of these allowances. For the years ended December 31, 2013, 2012, and 2011 the cost of meeting our obligation under this compliance program was immaterial. We had no obligations under this compliance program prior to completing the Pembroke Acquisition in 2011.
We enter into derivative instruments (futures) to reduce the impact of this risk on our results of operations and cash flows. Our positions in these 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. As of December 31, 2013 and 2012, we had no futures contracts outstanding related to this compliance program. For the year ended December 31, 2011, the loss recognized in income on compliance program derivative instruments designated as economic hedges was immaterial and therefore not separately presented in the table below under “Effect of Derivative Instruments on Statements of Income and Other Comprehensive Income.”
Fair Values of Derivative Instruments
The following tables provide information about the fair values of our derivative instruments as of December 31, 2013 and 2012 (in millions) and the line items in the balance sheets in which the fair values are reflected. See Note 20 for additional information related to the fair values of our derivative instruments.
As indicated in Note 20, 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		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
	Balance Sheet		31-Dec-12
	Location		Asset				Liability
			Derivatives				Derivatives
Derivatives designated as
hedging instruments
Commodity contracts:
Futures	Receivables, net		$	77			$	64
Swaps	Receivables, net		15				13
Swaps	Prepaid expenses and other		2				2
Total			$	94			$	79
Derivatives not designated as
hedging instruments
Commodity contracts:
Futures	Receivables, net		$	1,066			$	1,073
Swaps	Receivables, net		9				6
Swaps	Accrued expenses		32				46
Options	Receivables, net		1				4
Options	Accrued expenses		1				—
Physical purchase contracts	Inventories		11				—
Foreign currency contracts	Receivables, net		1				—
Foreign currency contracts	Accrued expenses		—				1
Total			$	1,121			$	1,130
Total derivatives			$	1,215			$	1,209
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 December 31, 2013 or 2012. 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 (OCI) 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)		Year Ended December 31,
Hedging Relationships		Recognized in Income
		on Derivatives		2013				2012			2011
Commodity contracts:
Loss recognized in		Cost of sales		$	(12	)		$	(250	)	$	(6	)
income on derivatives
Gain (loss) recognized in		Cost of sales		18				183			(23		)
income on hedged item
Gain (loss) recognized in		Cost of sales		6				(67		)	(29		)
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 years ended December 31, 2013, 2012, and 2011. There were no amounts recognized in income for hedged firm commitments that no longer qualified as fair value hedges during the years ended December 31, 2013 and 2011; however, a gain of $28 million was recognized in income during the year ended December 31, 2012 for hedged firm commitments that no longer qualified as fair value hedges.
Derivatives in Cash Flow		Location of Gain (Loss)		Year Ended December 31,
Hedging Relationships		Recognized in Income
		on Derivatives		2013				2012			2011
Commodity contracts:
Gain (loss) recognized in				$	(4	)		$	45		$	32
OCI on derivatives
(effective portion)
Gain (loss) reclassified from		Cost of sales		(2		)		73			3
accumulated OCI into
income (effective portion)
Gain recognized in		Cost of sales		21				48			5
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 years ended December 31, 2013, 2012, and 2011. For the year ended December 31, 2013, cash flow hedges primarily related to forward sales of gasoline and distillates, and associated forward purchases of crude oil, with $1 million of cumulative after-tax losses on cash flow hedges remaining in accumulated other comprehensive income. We estimate that $1 million of the deferred loss as of December 31, 2013 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 years ended December 31, 2013, 2012, and 2011, there were no amounts reclassified from accumulated other comprehensive income into income as a result of the discontinuance of cash flow hedge accounting.
Derivatives Designated as		Location of Gain (Loss)		Year Ended December 31,
Economic Hedges and Other		Recognized in Income
Derivative Instruments		on Derivatives		2013				2012			2011
Commodity contracts		Cost of sales		$	193			$	1		$	(349	)
Foreign currency contracts		Cost of sales		14				(38		)	18
Other contract		Cost of sales		—				—			29
Total				$	207			$	(37	)	$	(302	)
The gain of $29 million on the other contract for the year ended December 31, 2011 is related to the difference between the fair value of inventories acquired in connection with the Pembroke Acquisition and the amount paid for such inventories based on the terms of the purchase agreement. The loss of $349 million on commodity contracts for the year ended December 31, 2011 includes a $542 million loss related to forward sales of refined products.
Trading Derivatives		Location of Gain (Loss)		Year Ended December 31,
		Recognized in Income
		on Derivatives		2013				2012			2011
Commodity contracts		Cost of sales		$	21			$	(16	)	$	23
RINs fixed-price contracts		Cost of sales		(20		)		—			—

Quarterly_Financial_Data_Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
QUARTERLY FINANCIAL DATA (Unaudited)	'
	22	QUARTERLY FINANCIAL DATA (Unaudited)
	The following table summarizes quarterly financial data for the years ended December 31, 2013 and 2012 (in millions, except per share amounts).
		2013 Quarter Ended
		31-Mar			June 30 (a)		30-Sep		31-Dec
	Operating revenues	$	33,474		$	34,034	$	36,137	$	34,429
	Operating income	1,061			808		532		1,562
	Net income	652			465		324		1,287
	Net income attributable to	654			466		312		1,288
	Valero Energy Corporation
	stockholders
	Earnings per common share –	1.18			0.85		0.57		2.38
	assuming dilution
		2012 Quarter Ended
		March 31 (b)			30-Jun		30-Sep		31-Dec
	Operating revenues	$	35,167		$	34,662	$	34,726	$	34,695
	Operating income (loss)	(244		)	1,361		1,309		1,584
	Net income (loss)	(432		)	830		673		1,009
	Net income (loss) attributable to	(432		)	831		674		1,010
	Valero Energy Corporation
	stockholders
	Earnings (loss) per common share –	(0.78		)	1.5		1.21		1.82
	assuming dilution
	____________________
	(a)	The separation of our retail business was completed on May 1, 2013.
	(b)	The operations of the Aruba Refinery were suspended in March 2012.

Basis_of_Presentation_and_Summ1

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	General
	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. We are an independent petroleum refining and marketing company and own 16 refineries with a combined throughput capacity of approximately 3.1 million barrels per day as of December 31, 2013. We market branded and unbranded refined products on a wholesale basis in the United States (U.S.), Canada, the Caribbean, the United Kingdom (U.K.), and Ireland through an extensive bulk and rack marketing network and through approximately 7,400 outlets that carry the Valero®, Shamrock®, Ultramar®, Beacon®, and Texaco® brand names. We also own 10 ethanol plants in the U.S. that primarily produce ethanol with a combined production capacity of approximately 1.2 billion gallons per year as of December 31, 2013. Our operations are affected by:
	•	company-specific factors, primarily refinery utilization rates and refinery maintenance turnarounds;
	•	seasonal factors, such as the demand for refined products during the summer driving season and heating oil during the winter season; and
	•	industry factors, such as movements in and the level of crude oil prices including the effect of quality differentials between grades of crude oil, the demand for and prices of refined products, industry supply capacity, and competitor refinery maintenance turnarounds.
	We have evaluated subsequent events that occurred after December 31, 2013 through the filing of this Form 10-K. Any material subsequent events that occurred during this time have been properly recognized or disclosed in these financial statements.
Reclassifications	'
	Reclassifications
	Certain amounts previously reported in our annual report on Form 10-K for the year ended December 31, 2012 have been reclassified to conform to the 2013 presentation.
Principles of Consolidation	'
	Principles of Consolidation
	General
	These financial statements include the accounts of Valero and subsidiaries in which Valero has a controlling interest. Intercompany balances and transactions have been eliminated in consolidation. Investments in significant noncontrolled entities are accounted for using the equity method.
	Noncontrolling Interests
	Because of our controlling financial interest in each of the following entities, we have included their financial statements in our financial statements and have separately disclosed the related noncontrolling interests.
	•	Valero Energy Partners LP (VLP) is a master limited partnership formed in July 2013 to own, operate, develop, and acquire primarily fee-based crude oil and refined petroleum product pipelines and terminals. As further described in Note 5, VLP completed an initial public offering of its common units on December 16, 2013 and we owned a 70.6 percent controlling financial interest in VLP as of December 31, 2013.
	•	Diamond Green Diesel Holdings LLC (DGD Holdings) is a 50/50 joint venture with Darling Green Energy LLC, a subsidiary of Darling International, Inc., that constructed and now operates a biomass-based diesel unit having a design feed capacity of 10,000 barrels per day that processes animal fats, used cooking oils, and other vegetable oils into renewable green diesel. As of December 31, 2013, we had loaned $221 million to a subsidiary of DGD Holdings to finance a portion of the construction costs of the unit. The unit began operations in June 2013.
	•	PI Dock Facilities LLC (PI Dock) is a 50/50 joint venture with TGSD PI, LLC that will construct and operate crude oil docks and related facilities near our Port Arthur Refinery. In December 2012, we agreed to lend PI Dock up to $90 million to finance the construction of the initial crude dock, which is expected to be completed in late third quarter or early fourth quarter of 2014. As of December 31, 2013, we had loaned PI Dock $13 million to finance its construction projects.
Use of Estimates	'
	Use of Estimates
	The preparation of financial statements in conformity with U.S. generally accepted accounting principles (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.
Cash and Temporary Cash Investments	'
	Cash and Temporary Cash Investments
	Our temporary cash investments are highly liquid, low-risk debt instruments that have a maturity of three months or less when acquired.
Receivables	'
	Receivables
	Trade receivables are carried at original invoice amount. We maintain an allowance for doubtful accounts, which is adjusted based on management’s assessment of our customers’ historical collection experience, known credit risks, and industry and economic conditions.
Inventories	'
	Inventories
	Inventories are carried at the lower of cost or market. The cost of refinery feedstocks purchased for processing, refined products, and grain and ethanol inventories are determined under the last-in, first-out (LIFO) method using the dollar-value LIFO method, with any increments valued based on average purchase prices during the year. The cost of feedstocks and products purchased for resale and the cost of materials and supplies are determined principally under the weighted-average cost method.
Property, Plant, and Equipment	'
	Property, Plant, and Equipment
	The cost of property, plant, and equipment (property assets) purchased or constructed, including betterments of property assets, is capitalized. However, the cost of repairs to and normal maintenance of property assets is expensed as incurred. Betterments of property assets are those that extend the useful life, increase the capacity or improve the operating efficiency of the asset, or improve the safety of our operations. The cost of property assets constructed includes interest and certain overhead costs allocable to the construction activities.
	Our operations, especially those of our refining segment, are highly capital intensive. Each of our refineries comprises a large base of property assets, consisting of a series of interconnected, highly integrated and interdependent crude oil processing facilities and supporting logistical infrastructure (Units), and these Units are continuously improved. Improvements consist of the addition of new Units and betterments of existing Units. We plan for these improvements by developing a multi-year capital program that is updated and revised based on changing internal and external factors.
	Depreciation of property assets used in our refining segment is recorded on a straight-line basis over the estimated useful lives of these assets primarily using the composite method of depreciation. We maintain a separate composite group of property assets for each of our refineries. We estimate the useful life of each group based on an evaluation of the property assets comprising the group, and such evaluations consist of, but are not limited to, the physical inspection of the assets to determine their condition, consideration of the manner in which the assets are maintained, assessment of the need to replace assets, and evaluation of the manner in which improvements impact the useful life of the group. The estimated useful lives of our composite groups range primarily from 25 to 30 years.
	Under the composite method of depreciation, the cost of an improvement is added to the composite group to which it relates and is depreciated over that group’s estimated useful life. We design improvements to our refineries in accordance with engineering specifications, design standards and practices accepted in our industry, and these improvements have design lives consistent with our estimated useful lives. Therefore, we believe the use of the group life to depreciate the cost of improvements made to the group is reasonable because the estimated useful life of each improvement is consistent with that of the group. It should be noted, however, that factors such as competition, regulation, or environmental matters could cause us to change our estimates, thus impacting depreciation expense in the future.
	Also under the composite method of depreciation, the historical cost of a minor property asset (net of salvage value) that is retired or replaced is charged to accumulated depreciation and no gain or loss is recognized in income. However, a gain or loss is recognized in income for a major property asset that is retired, replaced or sold and for an abnormal disposition of a property asset (primarily involuntary conversions). Gains and losses are reflected in depreciation and amortization expense, unless such amounts are reported separately due to materiality.
	Depreciation of property assets used in our ethanol segment and our former retail segment (see Note 3) is recorded on a straight-line basis over the estimated useful lives of the related assets.
Deferred Charges and Other Assets	'
	Deferred Charges and Other Assets
	“Deferred charges and other assets, net” include the following:
	•	turnaround costs, which are incurred in connection with planned major maintenance activities at our refineries and ethanol plants and which are deferred when incurred and amortized on a straight-line basis over the period of time estimated to lapse until the next turnaround occurs;
	•	fixed-bed catalyst costs, representing the cost of catalyst that is changed out at periodic intervals when the quality of the catalyst has deteriorated beyond its prescribed function, which are deferred when incurred and amortized on a straight-line basis over the estimated useful life of the specific catalyst;
	•	investments in entities that we do not control; and
	•	other noncurrent assets such as investments of certain benefit plans (related primarily to certain U.S. nonqualified defined benefit plans whose plan assets are not protected from our creditors and therefore cannot be reflected as a reduction from our obligations under those pension plans), debt issuance costs, and various other costs.
Impairment of Assets	'
	Impairment of Assets
	Long-lived assets, which include property, plant, and equipment, intangible assets, and refinery turnaround and catalysts costs, are tested for recoverability whenever events or changes in circumstances indicate that the carrying amount of the asset may not be recoverable. A long-lived asset is not recoverable if its carrying amount exceeds the sum of the undiscounted cash flows expected to result from its use and eventual disposition. If a long-lived asset is not recoverable, an impairment loss is recognized for the amount by which the carrying amount of the long-lived asset exceeds its fair value, with fair value determined based on discounted estimated net cash flows or other appropriate methods.
Investments	'
	We evaluate our equity method investments for impairment when there is evidence that we may not be able to recover the carrying amount of our investments or the investee is unable to sustain an earnings capacity that justifies the carrying amount. A loss in the value of an investment that is other than a temporary decline is recognized currently in income, and is based on the difference between the estimated current fair value of the investment and its carrying amount.
Environmental Matters	'
	Environmental Matters
	Liabilities for future remediation costs are recorded when environmental assessments and/or remedial efforts are probable and the costs can be reasonably estimated. Other than for assessments, the timing and magnitude of these accruals generally are based on the completion of investigations or other studies or a commitment to a formal plan of action. Amounts recorded for environmental liabilities have not been reduced by possible recoveries from third parties and have not been measured on a discounted basis.
Asset Retirement Obligations	'
	Asset Retirement Obligations
	We record a liability, which is referred to as an asset retirement obligation, at fair value for the estimated cost to retire a tangible long-lived asset at the time we incur that liability, which is generally when the asset is purchased, constructed, or leased. We record the liability when we have a legal obligation to incur costs to retire the asset and when a reasonable estimate of the fair value of the liability can be made. If a reasonable estimate cannot be made at the time the liability is incurred, we record the liability when sufficient information is available to estimate the liability’s fair value.
Foreign Currency Translation	'
	Foreign Currency Translation
	The functional currency of each of our international operations is generally the respective local currency, which includes the Canadian dollar, the Aruban florin, the pound sterling, and the euro. Balance sheet accounts are translated into U.S. dollars using exchange rates in effect as of the balance sheet date. Revenue and expense accounts are translated using the weighted-average exchange rates during the year presented. Foreign currency translation adjustments are recorded as a component of accumulated other comprehensive income.
Revenue Recognition	'
	Revenue Recognition
	Revenues for products sold by the refining and ethanol segments and our former retail segment (see Note 3) are recorded upon delivery of the products to our customers, which is the point at which title to the products is transferred, and when payment has either been received or collection is reasonably assured.
	Excise taxes on sales by our U.S. retail system were presented on a gross basis. All other excise taxes are presented on a net basis.
	We enter into certain purchase and sale arrangements with the same counterparty that are deemed to be made in contemplation of one another. We combine these transactions and, as a result, revenues and cost of sales are not recognized in connection with these arrangements. We also enter into refined product exchange transactions to fulfill sales contracts with our customers by accessing refined products in markets where we do not operate our own refineries. These refined product exchanges are accounted for as exchanges of non-monetary assets, and no revenues are recorded on these transactions.
Product Shipping and Handling Costs	'
	Product Shipping and Handling Costs
	Costs incurred for shipping and handling of products are included in cost of sales.
Cost of Biofuel Credits	'
	Cost of Biofuel Credits
	We purchase biofuel credits (primarily Renewable Identification Numbers (RINs) in the U.S.) to comply with government regulations that require us to blend a certain percentage of biofuels into the products we produce, as further described in Note 21 under “Compliance Program Price Risk.” To the degree that we are unable to blend biofuels at the required percentage, we must purchase biofuel credits in the open market to meet our obligation. The cost of purchased biofuel credits is charged to cost of sales as such credits are needed to satisfy our obligation. To the extent we have not purchased enough biofuel credits to satisfy our obligation as of the balance sheet date, we charge cost of sales for such deficiency based on the market price of the biofuel credits as of the balance sheet date, and we record a liability for our obligation to purchase those credits. See Note 20 for disclosure of our fair value liability.
Stock-Based Compensation	'
	Stock-Based Compensation
	Compensation expense for our share-based compensation plans is based on the fair value of the awards granted and is recognized in income on a straight-line basis over the requisite service period of each award. For new grants that have retirement-eligibility provisions, we use the non-substantive vesting period approach, under which compensation cost is recognized immediately for awards granted to retirement-eligible employees or over the period from the grant date to the date retirement eligibility is achieved if that date is expected to occur during the nominal vesting period.
Income Taxes	'
	Income Taxes
	Income taxes are accounted for under the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred amounts are measured using enacted tax rates expected to apply to taxable income in the year those temporary differences are expected to be recovered or settled.
	We have elected to classify any interest expense and penalties related to the underpayment of income taxes in income tax expense.
Earnings Per Common Share	'
	Earnings per Common Share
	Earnings per common share is computed by dividing net income by the weighted-average number of common shares outstanding for the year. Participating share-based payment awards, including shares of restricted stock granted under certain of our stock-based compensation plans, are included in the computation of basic earnings per share using the two-class method. Earnings per common share – assuming dilution reflects the potential dilution arising from our outstanding stock options and nonvested shares granted to employees in connection with our stock-based compensation plans. Potentially dilutive securities are excluded from the computation of earnings per common share – assuming dilution when the effect of including such shares would be antidilutive.
Financial Instruments	'
	Financial Instruments
	Our financial instruments include cash and temporary cash investments, receivables, payables, debt, capital lease obligations, commodity derivative contracts, and foreign currency derivative contracts. The estimated fair values of these financial instruments approximate their carrying amounts, except for certain debt as discussed in Note 20.
Derivatives and Hedging	'
	Derivatives and Hedging
	All derivative instruments are recorded in the balance sheet as either assets or liabilities measured at their fair values. 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, are 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 in 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 hedging relationships (derivative instruments not designated as fair value or cash flow hedges) and for derivative instruments entered into 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 the statements of cash flows.
New Accounting Pronouncements	'
	New Accounting Pronouncements
	In July 2013, the provisions of Accounting Standards Codification 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 will not affect our financial position or results of operations, nor will it require any additional disclosures, but may result in a change in presentation to our consolidated balance sheets.
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 and hedging	'
	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 20), 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 in 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.

Acquisitions_Tables

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Amounts assigned to assets acquired and liabilities assumed recognized at acquisition-date fair values	'
	The final amounts assigned to the assets acquired and liabilities assumed in the Meraux Acquisition were recognized at their acquisition-date fair values as follows (in millions):
	Inventories	$	227
	Property, plant, and equipment	293
	Deferred charges and other assets, net	28
	Other long-term liabilities	(1		)
	Purchase price	$	547
	The final amounts assigned to the assets acquired and liabilities assumed in the Pembroke Acquisition were recognized at their acquisition-date fair values as follows (in millions):
	Current assets, net of cash acquired	$	2,215
	Property, plant, and equipment	947
	Intangible assets	22
	Deferred charges and other assets, net	37
	Current liabilities, less current portion of debt	(1,294		)
	and capital lease obligations
	Debt and capital leases assumed, including current portion	(12		)
	Deferred income taxes	(159		)
	Other long-term liabilities	(60		)
	Noncontrolling interest	(5		)
	Purchase price, net of cash acquired	$	1,691

Dispositions_of_Businesses_Tab

Dispositions of Businesses (Tables)	12 Months Ended
	Dec. 31, 2013
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]	'
Carrying value of retail business assets and liabilities prior to separation	'
	The following table presents the carrying values of the major categories of assets and liabilities of our retail business, immediately preceding its separation on May 1, 2013, which are excluded from our consolidated balance sheet as of December 31, 2013 (in millions):
	Assets
	Cash and temporary cash investments	$	315
	Credit card receivables from Valero	44
	Other receivables, net	109
	Inventories	170
	Deferred income taxes	14
	Prepaid expenses and other	13
	Total current assets	665
	Property, plant, and equipment, at cost	1,891
	Accumulated depreciation	(611		)
	Property, plant, and equipment, net	1,280
	Intangible assets, net	38
	Deferred charges and other assets, net	191
	Total assets	$	2,174
	Liabilities
	Current portion of capital lease obligations	$	2
	Trade payable to Valero	242
	Other accounts payable	96
	Accrued expenses	31
	Taxes other than income taxes	20
	Total current liabilities	391
	Debt and capital lease obligations, less current portion	1,053
	Deferred income taxes	83
	Other long-term liabilities	112
	Total liabilities	$	1,639

Initial_Public_Offering_of_Val1

Initial Public Offering of Valero Energy Partners LP (Tables)	12 Months Ended
	Dec. 31, 2013
Noncontrolling Interest [Abstract]	'
Reconciliation of proceeds from the Offering	'
	The following table is a reconciliation of net proceeds from the Offering (in millions):
	Total proceeds from the Offering	$	397
	Less offering costs	(28		)
	Net proceeds from the Offering	$	369

Receivables_Tables

Receivables (Tables)	12 Months Ended
	Dec. 31, 2013
Receivables [Abstract]	'
Receivables, net	'
	Receivables consisted of the following (in millions):
		December 31,
		2013			2012
	Accounts receivable	$	8,650		$	8,061
	Commodity derivative and foreign currency	98			136
	contract receivables
	Notes receivable and other	49			26
		8,797			8,223
	Allowance for doubtful accounts	(46		)	(56		)
	Receivables, net	$	8,751		$	8,167
	Changes in the allowance for doubtful accounts consisted of the following (in millions):
		Year Ended December 31,
		2013			2012			2011
	Balance as of beginning of year	$	56		$	48		$	42
	Increase in allowance charged to expense	13			21			21
	Accounts charged against the allowance,	(23		)	(13		)	(14		)
	net of recoveries
	Foreign currency translation	—			—			(1		)
	Balance as of end of year	$	46		$	56		$	48

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Schedule of inventories	'
	Inventories consisted of the following (in millions):
		December 31,
		2013		2012
	Refinery feedstocks	$	2,135	$	2,458
	Refined products and blendstocks	3,231		2,995
	Ethanol feedstocks and products	166		191
	Convenience store merchandise	—		112
	Materials and supplies	226		217
	Inventories	$	5,758	$	5,973

Property_Plant_and_Equipment_T

Property, Plant, and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property, plant, and equipment	'
	Major classes of property, plant, and equipment, which include capital lease assets, consisted of the following (in millions):
		December 31,
		2013			2012
	Land	$	404		$	802
	Crude oil processing facilities	27,260			24,865
	Pipeline and terminal facilities	1,513			1,471
	Grain processing equipment	719			694
	Retail facilities	—			1,480
	Administrative buildings	800			734
	Other	2,109			1,457
	Construction in progress	1,128			2,629
	Property, plant, and equipment, at cost	33,933			34,132
	Accumulated depreciation	(8,226		)	(7,832		)
	Property, plant, and equipment, net	$	25,707		$	26,300

Accrued_Expenses_and_Other_Lon1

Accrued Expenses and Other Long-Term Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
Accrued Expenses and Other Long-Term Liabilities [Abstract]	'
Accrued expenses and other long-term liabilities	'
	Accrued expenses and other long-term liabilities consisted of the following (in millions):
			Accrued						Other Long-
			Expenses						Term Liabilities
			December 31,
			2013			2012			2013		2012
	Defined benefit plan liabilities (see Note 14)		$	30		$	32		$	507	$	982
	Wage and other employee-related liabilities		257			282			97		91
	Uncertain income tax position liabilities,		—			—			205		391
	including related penalties and interest (see Note 16) (a)
	Environmental liabilities		24			27			277		242
	Accrued interest expense		90			96			—		—
	Derivative liabilities		13			14			—		—
	Asset retirement obligations		5			5			26		103
	Other accrued liabilities		103			134			217		321
	Accrued expenses and other long-term liabilities		$	522		$	590		$	1,329	$	2,130
	___________________________
	(a) As of December 31, 2013, our total liability for uncertain tax positions, including related penalties and interest, was $443 million, with $238 million classified as a current liability and reflected in “Income taxes payable” and the remaining $205 million classified as a long-term liability and reflected in “Other long-term liabilities” as detailed in this table. As of December 31, 2012, our total liability for uncertain tax positions, including related penalties and interest, was classified as a long-term liability and reflected in “Other long-term liabilities” as detailed in this table.
Changes in environmental liabilities	'
	Changes in our environmental liabilities were as follows (in millions):
		Year Ended December 31,
		2013			2012			2011
	Balance as of beginning of year	$	269		$	274		$	268
	Pembroke Acquisition	—			—			30
	Additions to liability	67			23			18
	Reductions to liability	(1		)	(1		)	(5		)
	Payments, net of third-party recoveries	(28		)	(29		)	(35		)
	Separation of retail business	(4		)	—			—
	Foreign currency translation	(2		)	2			(2		)
	Balance as of end of year	$	301		$	269		$	274
Changes in asset retirement obligations	'
	Changes in our asset retirement obligations were as follows (in millions).
		Year Ended December 31,
		2013			2012			2011
	Balance as of beginning of year	$	108		$	87		$	101
	Additions to accrual	2			14			3
	Revisions in estimated cash flows	—			13			1
	Accretion expense	2			5			4
	Settlements	(1		)	(11		)	(22		)
	Separation of retail business	(80		)	—			—
	Balance as of end of year	$	31		$	108		$	87

Debt_and_Capital_Lease_Obligat1

Debt and Capital Lease Obligations (Tables)	12 Months Ended
	Dec. 31, 2013
Debt and Capital Lease Obligations [Abstract]	'
Debt and capital lease obligations	'
	Debt, at stated values, and capital lease obligations consisted of the following (in millions):
		Final		December 31,
		Maturity		2013				2012
	Bank credit facilities	Various		$	—			$	—
	Senior Notes:
	4.50%	2015		400				400
	4.75%	2013		—				300
	4.75%	2014		200				200
	6.13%	2017		750				750
	6.13%	2020		850				850
	6.63%	2037		1,500				1,500
	6.70%	2013		—				180
	6.75%	2037		24				24
	7.20%	2017		200				200
	7.45%	2097		100				100
	7.50%	2032		750				750
	8.75%	2030		200				200
	9.38%	2019		750				750
	10.50%	2039		250				250
	Debentures:
	7.65%	2026		100				100
	8.75%	2015		75				75
	Gulf Opportunity Zone Revenue Bonds, Series 2010, 4.0%	2040		300				300
	Accounts receivable sales facility	2014		100				100
	Net unamortized discount, including fair value adjustments			(24		)		(29		)
	Total debt			6,525				7,000
	Capital lease obligations, including unamortized fair value adjustments			39				49
	Total debt and capital lease obligations			6,564				7,049
	Less current portion			(303		)		(586		)
	Debt and capital lease obligations, less current portion			$	6,261			$	6,463
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 Capacity				Expiration		December 31, 2013			December 31, 2012
	Letter of credit facilities		$	550			June 2014		$	278		$	418
	Revolver		$	3,000			Nov-18		$	59		$	59
	Canadian revolving credit facility		C$	50			November 2014		C$	10		C$	10
Changes in accounts receivable sales facility	'
	Changes in the amounts outstanding under our accounts receivable sales facility were as follows (in millions):
		Year Ended December 31,
		2013				2012				2011
	Balance as of beginning of year	$	100			$	250			$	100
	Proceeds from the sale of receivables	—				1,500				150
	Repayments	—				(1,650		)		—
	Balance as of end of year	$	100			$	100			$	250
Principal payments on debt and future minimum rentals on capital lease obligations	'
	Principal payments on our debt obligations and future minimum rentals on capital lease obligations as of December 31, 2013 were as follows (in millions):
		Debt				Capital
						Lease
						Obligations
	2014	$	300			$	8
	2015	475				8
	2016	—				7
	2017	950				7
	2018	—				6
	Thereafter	4,824				27
	Net unamortized discount	(24		)		1
	and fair value adjustments
	Less interest expense	—				(25		)
	Total	$	6,525			$	39

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Future minimum rentals and minimum rentals to be received under subleases for leases having initial or remaining noncancelable lease terms in excess of one year	'
	As of December 31, 2013, our future minimum rentals and minimum rentals to be received under subleases for leases having initial or remaining noncancelable lease terms in excess of one year were as follows (in millions):
	2014	$	305
	2015	230
	2016	162
	2017	111
	2018	95
	Thereafter	321
	Total minimum rental payments	$	1,224
	Minimum rentals to be received	$	21
	under subleases
Rental expense for all operating leases	'
	Rental expense was as follows (in millions):
		Year Ended December 31,
		2013		2012			2011
	Minimum rental expense	$	574	$	508		$	523
	Contingent rental expense	7		23			23
	Total rental expense	581		531			546
	Less sublease rental income	—		(2		)	(2		)
	Net rental expense	$	581	$	529		$	544

Equity_Tables

Equity (Tables)	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Share activity	'
	For the years ended December 31, 2013, 2012, and 2011, activity in the number of shares of common stock and treasury stock was as follows (in millions):
		Common			Treasury
		Stock			Stock
	Balance as of December 31, 2010	673			(105	)
	Transactions in connection with
	stock-based compensation plans:
	Stock issuances	—			5
	Stock repurchases	—			(17	)
	Balance as of December 31, 2011	673			(117	)
	Transactions in connection with
	stock-based compensation plans:
	Stock issuances	—			6
	Stock repurchases	—			(6	)
	Stock repurchases under buyback program	—			(4	)
	Balance as of December 31, 2012	673			(121	)
	Transactions in connection with
	stock-based compensation plans:
	Stock issuances	—			6
	Stock repurchases	—			(6	)
	Stock repurchases under buyback program	—			(17	)
	Balance as of December 31, 2013	673			(138	)
Income tax effects related to components of other comprehensive income	'
	The following table reflects the tax effects allocated to each component of other comprehensive income for the years ended December 31, 2013, 2012, and 2011 (in millions):
		Before-Tax Amount				Tax Expense (Benefit)			Net Amount
	Year Ended December 31, 2013:
	Foreign currency translation adjustment	$	(98	)		$	—		$	(98	)
	Pension and other postretirement benefits:
	Gain arising during the year related to:
	Net actuarial gain	367				125			242
	Plan amendments	371				130			241
	(Gain) loss reclassified into income related to:
	Net actuarial loss	57				20			37
	Prior service credit	(33		)		(12		)	(21		)
	Settlement	1				—			1
	Net gain on pension and other	763				263			500
	postretirement benefits
	Derivative instruments designated and
	qualifying as cash flow hedges:
	Net loss arising during the year	(4		)		(2		)	(2		)
	Net loss reclassified into income	2				1			1
	Net loss on cash flow hedges	(2		)		(1		)	(1		)
	Other comprehensive income	$	663			$	262		$	401
		Before-Tax Amount				Tax Expense (Benefit)			Net Amount
	Year Ended December 31, 2012:
	Foreign currency translation adjustment	$	164			$	—		$	164
	Pension and other postretirement benefits:
	Loss arising during the year related to:
	Net actuarial loss	(228		)		(79		)	(149		)
	Prior service cost	(9		)		(3		)	(6		)
	(Gain) loss reclassified into income related to:
	Net actuarial loss	34				12			22
	Prior service credit	(20		)		(7		)	(13		)
	Settlement	12				—			12
	Net loss on pension and other	(211		)		(77		)	(134		)
	postretirement benefits
	Derivative instruments designated and
	qualifying as cash flow hedges:
	Net gain arising during the year	45				16			29
	Net gain reclassified into income	(73		)		(26		)	(47		)
	Net loss on cash flow hedges	(28		)		(10		)	(18		)
	Other comprehensive income (loss)	$	(75	)		$	(87	)	$	12
	Year Ended December 31, 2011:
	Foreign currency translation adjustment	$	(122	)		$	—		$	(122	)
	Pension and other postretirement benefits:
	Loss arising during the year related to:
	Net actuarial loss	(285		)		(100		)	(185		)
	Prior service cost	(4		)		(1		)	(3		)
	(Gain) loss reclassified into income related to:
	Net actuarial loss	14				4			10
	Prior service credit	(21		)		(7		)	(14		)
	Settlement	4				1			3
	Net loss on pension and other	(292		)		(103		)	(189		)
	postretirement benefits
	Derivative instruments designated and
	qualifying as cash flow hedges:
	Net gain arising during the year	32				11			21
	Net gain reclassified into income	(3		)		(1		)	(2		)
	Net gain on cash flow hedges	29				10			19
	Other comprehensive loss	$	(385	)		$	(93	)	$	(292	)
Changes in components of accumulated other comprehensive income (loss)	'
	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, 2010	$	623			$	(235	)	$	—		$	388
	Other comprehensive income (loss)	(122		)		(189		)	19			(292		)
	Balance as of December 31, 2011	501				(424		)	19			96
	Other comprehensive income (loss)	164				(134		)	(18		)	12
	Balance as of December 31, 2012	665				(558		)	1			108
	Other comprehensive income (loss)	(98		)		483			(2		)	383
	before reclassifications
	Amounts reclassified from	—				17			1			18
	accumulated other comprehensive
	income (loss)
	Net other comprehensive income	(98		)		500			(1		)	401
	(loss)
	Separation of retail business	(159		)		—			—			(159		)
	Balance as of December 31, 2013	$	408			$	(58	)	$	—		$	350
Gains (losses) reclassified out of accumulated other comprehensive income	'
	Gains (losses) reclassified out of accumulated other comprehensive income (loss) and into net income were as follows (in millions):
	Details about		Year Ended December 31, 2013				Affected Line
	Accumulated Other						Item in the
	Comprehensive Income						Statement of
	(Loss) Components						Income
	Amortization of items related to
	defined benefit pension plans:
	Net actuarial loss		$	(57	)		(a)
	Prior service credit		33				(a)
	Settlement		(1		)		(a)
			(25		)		Total before tax
			8				Tax benefit
			$	(17	)		Net of tax
	Losses on cash flow hedges:
	Commodity contracts		$	(2	)		Cost of sales
			(2		)		Total before tax
			1				Tax benefit
			$	(1	)		Net of tax
	Total reclassifications for the year		$	(18	)		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 14. Net periodic benefit cost is reflected in operating expenses and general and administrative expenses.

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]	'
The changes in benefit obligation, the changes in fair value of plan assets, and the funded status of our pension plans and other postretirement benefit plans	'
	The changes in benefit obligation related to all of our defined benefit plans, the changes in fair value of plan assets(a), and the funded status of our defined benefit plans as of and for the years ended were as follows (in millions):
		Pension Plans								Other Postretirement
										Benefit Plans
		December 31,								December 31,
		2013				2012				2013			2012
	Changes in benefit obligation:
	Benefit obligation as of beginning of year	$	2,307			$	1,881			$	436		$	438
	Service cost	137				140				12			12
	Interest cost	86				93				18			21
	Participant contributions	—				—				15			14
	Plan amendments	(274		)		9				(43		)	—
	Curtailment gain	(6		)		(16		)		—			—
	Benefits paid	(170		)		(90		)		(37		)	(35		)
	Actuarial (gain) loss	(169		)		289				(77		)	(17		)
	Other	3				1				—			3
	Benefit obligation as of end of year	$	1,914			$	2,307			$	324		$	436
	Changes in plan assets(a):
	Fair value of plan assets as of beginning of year	$	1,729			$	1,487			$	—		$	—
	Actual return on plan assets	306				167				—			—
	Valero contributions	41				164				19			19
	Participant contributions	—				—				15			14
	Benefits paid	(170		)		(90		)		(37		)	(35		)
	Other	3				1				3			2
	Fair value of plan assets as of end of year	$	1,909			$	1,729			$	—		$	—
	Reconciliation of funded status(a):
	Fair value of plan assets as of end of year	$	1,909			$	1,729			$	—		$	—
	Less benefit obligation as of end of year	1,914				2,307				324			436
	Funded status as of end of year	$	(5	)		$	(578	)		$	(324	)	$	(436	)
	Accumulated benefit obligation	$	1,811			$	1,857			n/a			n/a
	___________________________
	(a)	Plan assets include only the assets associated with pension plans subject to legal minimum funding standards. Plan assets associated with U.S. nonqualified pension plans are not included here because they are not protected from our creditors and therefore cannot be reflected as a reduction from our obligations under the pension plans. As a result, the reconciliation of funded status does not reflect the effect of plan assets that exist for all of our defined benefit plans. See Note 20 for the assets associated with certain U.S. nonqualified pension plans.
Schedule of amounts recognized in balance sheet	'
	Amounts recognized in our balance sheet for our pension and other postretirement benefits plans as of December 31, 2013 and 2012 include (in millions):
		Pension Plans								Other Postretirement
										Benefit Plans
		2013				2012				2013			2012
	Deferred charges and other assets, net	$	208			$	—			$	—		$	—
	Accrued expenses	(11		)		(11		)		(19		)	(21		)
	Other long-term liabilities	(202		)		(567		)		(305		)	(415		)
		$	(5	)		$	(578	)		$	(324	)	$	(436	)
Benefit obligations in excess of fair value of plan assets	'
	The accumulated benefit obligations for certain of our pension plans exceed the fair values of the assets of those plans. For those plans, the table below presents the total projected benefit obligation, accumulated benefit obligation, and fair value of the plan assets (in millions).
		December 31,
		2013				2012
	Projected benefit obligation	$	215			$	250
	Accumulated benefit obligation	168				191
	Fair value of plan assets	3				31
Expected benefit payments	'
	Benefit payments that we expect to pay, including amounts related to expected future services, and the anticipated Medicare subsidies that we expect to receive are as follows for the years ending December 31 (in millions):
		Pension				Other
		Benefits				Postretirement
						Benefits
	2014	$	100			$	19
	2015	125				19
	2016	116				20
	2017	127				20
	2018	146				21
	2019-2023	820				107
Components of net periodic benefit costs	'
	The components of net periodic benefit cost were as follows for the years ended (in millions):
		Pension Plans											Other Postretirement
													Benefit Plans
		December 31,											December 31,
		2013				2012				2011			2013				2012			2011
	Components of net periodic
	benefit cost:
	Service cost	$	137			$	140			$	104		$	12			$	12		$	11
	Interest cost	86				93				85			18				21			22
	Expected return on plan assets	(131		)		(125		)		(112		)	—				—			—
	Amortization of:
	Prior service cost (credit)	(19		)		3				2			(14		)		(23		)	(23		)
	Net actuarial loss	57				33				12			—				1			2
	Special charges (credits)	(5		)		(3		)		4			—				—			4
	Net periodic benefit cost	$	125			$	141			$	95		$	16			$	11		$	16
Amounts recognized in other comprehensive income	'
	Pre-tax amounts recognized in other comprehensive income for the years ended were as follows (in millions):
		Pension Plans											Other Postretirement
													Benefit Plans
		December 31,											December 31,
		2013				2012				2011			2013				2012			2011
	Net gain (loss) arising during
	the year:
	Net actuarial gain (loss)	$	290			$	(245	)		$	(294	)	$	77			$	17		$	9
	Prior service cost	—				(9		)		(4		)	—				—			—
	Remeasurement due to plan amendments	328				—				—			43				—			—
	Net (gain) loss reclassified into
	income:
	Net actuarial loss	57				33				12			—				1			2
	Prior service cost (credit)	(19		)		3				2			(14		)		(23		)	(23		)
	Curtailment and settlement loss	1				12				4			—				—			—
	Total changes in other	$	657			$	(206	)		$	(280	)	$	106			$	(5	)	$	(12	)
	comprehensive income (loss)
Amounts in accumulated other comprehensive income not yet recognized	'
	The pre-tax amounts in accumulated other comprehensive income as of December 31, 2013 and 2012 that have not yet been recognized as components of net periodic benefit cost were as follows (in millions):
		Pension Plans								Other Postretirement
										Benefit Plans
		2013				2012				2013			2012
	Prior service cost (credit)	$	(233	)		$	21			$	(110	)	$	(81	)
	Net actuarial loss (gain)	479				882				(44		)	34
	Total	$	246			$	903			$	(154	)	$	(47	)
Amounts in accumulated other comprehensive income to be recognized in the next fiscal year	'
	The following pre-tax amounts included in accumulated other comprehensive income as of December 31, 2013 are expected to be recognized as components of net periodic benefit cost during the year ending December 31, 2014 (in millions):
		Pension Plans				Other
						Postretirement
						Benefit Plans
	Amortization of prior service credit	$	(22	)		$	(18	)
	Amortization of net actuarial loss (gain)	35				(1		)
	Total	$	13			$	(19	)
Weighted-average assumptions used to determine the benefit obligations and net periodic benefit cost	'
	The weighted-average assumptions used to determine the net periodic benefit cost for the years ended December 31, 2013, 2012, and 2011 were as follows:
		Pension Plans									Other Postretirement
											Benefit Plans
		2013			2012			2011			2013		2012			2011
	Discount rate	4.33	%		5.08	%		5.4	%		4.19	%	4.97	%		5.22	%
	Expected long-term rate of return	7.62	%		7.67	%		7.69	%		—	%	—	%		—	%
	on plan assets
	Rate of compensation increase	3.73	%		3.68	%		3.56	%		—	%	—	%		—	%
	The weighted-average assumptions used to determine the benefit obligations as of December 31, 2013 and 2012 were as follows:
		Pension Plans						Other
								Postretirement
								Benefit Plans
		2013			2012			2013			2012
	Discount rate	4.92	%		4.28	%		4.88	%		4.19	%
	Rate of compensation increase	3.81	%		3.73	%		—	%		—	%
Assumed health care cost trend rates	'
	The assumed health care cost trend rates as of December 31, 2013 and 2012 were as follows:
		2013			2012
	Health care cost trend rate assumed for the next year	7.39	%		7.32	%
	Rate to which the cost trend rate was assumed to decline	5	%		5	%
	(the ultimate trend rate)
	Year that the rate reaches the ultimate trend rate	2020			2020
Effect of one percentage-point change in assumed health care cost trend rates	'
	A one percentage-point change in assumed health care cost trend rates would have the following effects on other postretirement benefits (in millions):
		1% Increase				1% Decrease
	Effect on total of service and interest cost components	$	—			$	—
	Effect on accumulated postretirement benefit obligation	3				(3		)
Fair value of pension plan assets by level of fair value hierarchy	'
	The tables below present the fair values of the assets of our pension plans (in millions) as of December 31, 2013 and 2012 by level of the fair value hierarchy. Assets categorized in Level 1 of the hierarchy are measured at fair value using a market approach based on quotations from national securities exchanges. Assets categorized in Level 2 of the hierarchy are measured at net asset value as a practical expedient for fair value. As previously noted, we do not fund or fully fund U.S. nonqualified and certain international pension plans that are not subject to funding requirements, and we do not fund our other postretirement benefit plans.
		Fair Value Measurements Using
		Quoted				Significant				Significant			Total as of
		Prices in				Other				Unobservable			December 31,
		Active				Observable				Inputs			2013
		Markets				Inputs				(Level 3)
		(Level 1)				(Level 2)
	Equity securities:
	U.S. companies(a)	$	529			$	—			$	—		$	529
	International companies	155				—				—			155
	Preferred stock	3				—				—			3
	Mutual funds:
	International growth	131				—				—			131
	Index funds(b)	160				—				—			160
	Corporate debt instruments	—				260				—			260
	Government securities:
	U.S. Treasury securities	81				—				—			81
	Other government securities	—				79				—			79
	Common collective trusts	—				373				—			373
	Private fund	—				38				—			38
	Insurance contracts	—				17				—			17
	Interest and dividends receivable	5				—				—			5
	Cash and cash equivalents	72				6				—			78
	Total	$	1,136			$	773			$	—		$	1,909
	______________________
	See notes on page 102.
		Fair Value Measurements Using
		Quoted				Significant				Significant			Total as of
		Prices in				Other				Unobservable			December 31,
		Active				Observable				Inputs			2012
		Markets				Inputs				(Level 3)
		(Level 1)				(Level 2)
	Equity securities:
	U.S. companies(a)	$	441			$	—			$	—		$	441
	International companies	135				—				—			135
	Preferred stock	2				1				—			3
	Mutual funds:
	International growth	127				—				—			127
	Index funds(b)	117				—				—			117
	Corporate debt instruments	—				290				—			290
	Government securities:
	U.S. Treasury securities	107				—				—			107
	Other government securities	3				65				—			68
	Common collective trusts	—				294				—			294
	Insurance contracts	—				17				—			17
	Interest and dividends receivable	5				—				—			5
	Cash and cash equivalents	98				27				—			125
	Total	$	1,035			$	694			$	—		$	1,729
	___________________
	(a)	Equity securities are held in a wide range of industrial sectors, including consumer goods, information technology, healthcare, industrials, and financial services.
	(b)	This class includes primarily investments in approximately 60 percent equities and 40 percent bonds.

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Schedule of stock-based compensation expense and tax benefits	'
	The following table reflects activity related to our stock-based compensation arrangements (in millions):
		Year Ended December 31,
		2013			2012				2011
	Stock-based compensation expense	$	64		$	58			$	58
	Tax benefit recognized on stock-based compensation expense	22			20				20
	Tax benefit realized for tax deductions resulting from exercises and vestings	66			45				35
	Effect of tax deductions in excess of recognized stock-based compensation expense reported as a financing cash flow	47			27				23
Summary of weighted-average assumptions used in fair value measurements	'
	A summary of the weighted-average assumptions used in our fair value measurements is presented in the table below.
		Year Ended December 31,
		2013		2012			2011
	Expected life in years	6		6			6
	Expected volatility	49.63	%	49.11	%		49.3	%
	Expected dividend yield	2.27	%	2.39	%		2.28	%
	Risk-free interest rate	1.77	%	0.85	%		1.44	%
Summary of stock option awards	'
	A summary of the status of our stock option awards is presented in the table below.
		Number of		Weighted-				Weighted-		Aggregate
		Stock		Average				Average		Intrinsic
		Options		Exercise				Remaining		Value
				Price Per				Contractual
				Share				Term
								(in years)		(in millions)
	Outstanding as of January 1, 2013	13,214,728		$	28.54
	Granted	201,300		39.67
	Exercised	(3,837,090	)	15.21
	Expired	(1,780,113	)	49.45
	Options granted on conversion related	759,268		28.84
	to separation of retail business
	Outstanding as of December 31, 2013	8,558,093		27.88				3.5		$	216
	Exercisable as of December 31, 2013	8,037,807		27.66				3.1		206
	The following table reflects activity related to our stock options granted (in millions, except per share data):
		Year Ended December 31,
		2013			2012				2011
	Weighted average grant-date fair value price per share	$	15.83		$	10.98			$	10.1
	Intrinsic value of stock options exercised	101			78				63
	Cash received from stock option exercises	59			59				49
Summary of restricted stock awards	'
	A summary of the status of our restricted stock awards is presented in the table below.
		Number of		Weighted-
		Shares		Average
				Grant-Date
				Fair Value
				Per Share
	Nonvested shares as of January 1, 2013	2,920,288		$	24.76
	Granted	1,255,742		39.55
	Vested	(2,113,647	)	23.73
	Forfeited	(31,546	)	23.73
	Shares granted on conversion related	174,477		23.42
	to separation of retail business
	Nonvested shares as of December 31, 2013	2,205,314		32.23
Summary of performance awards	'
	A summary of the status of our performance awards considered granted is presented below.
		Nonvested		Vested
		Awards		Awards
	Awards outstanding as of January 1, 2013	989,414		208,916
	Granted	415,317		—
	Vested	(442,274	)	442,274
	Converted	—		(534,515	)
	Forfeited	(50,076	)	(116,675	)
	Shares granted on conversion related	34,784		—
	to separation of retail business
	Awards outstanding as of December 31, 2013	947,165		—
	There were three tranches of performance awards granted during the year ended December 31, 2013 as follows:
		Awards		Expected		Fair Value
		Granted		Conversion		Per Share
				Rate
	Third tranche of 2011 awards	227,565		100%		$	38.77
	Second tranche of 2012 awards	105,030		100%		38.77
	First tranche of 2013 awards	82,722		100%		38.77
	Total	415,317
	Performance awards converted during the year ended December 31, 2013 were as follows:
		Vested		Actual		Number of			Awards
		Awards		Conversion		Shares			Forfeited
		Converted		Rate		Issued
	2010 awards	417,833		100%		417,833			—
	2011 awards	233,357		50%		116,682			116,675
	Total	651,190				534,515			116,675

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income from continuing operations before income tax expense from U.S. and international operations	'
	Income from continuing operations before income tax expense from U.S. and international operations was as follows (in millions):
		Year Ended December 31,
		2013			2012			2011
	U.S. operations	$	3,531		$	4,015		$	3,190
	International operations	451			(309		)	132
	Income from continuing operations before income tax expense	$	3,982		$	3,706		$	3,322
Reconciliation of income tax expense related to income from continuing operations before income tax expense	'
	The following is a reconciliation of income tax expense computed by applying the U.S. federal statutory income tax rate (35 percent for all years presented) to actual income tax expense related to continuing operations (in millions):
		Year Ended December 31,
		2013			2012			2011
	Federal income tax expense	$	1,394		$	1,297		$	1,163
	at the U.S. federal statutory rate
	U.S. state income tax expense,	62			64			29
	net of U.S. federal income tax effect
	U.S. manufacturing deduction	(36		)	(33		)	(28		)
	International operations	(71		)	266			46
	Permanent differences	(104		)	20			8
	Change in tax law	(32		)	—			—
	Other, net	41			12			8
	Income tax expense	$	1,254		$	1,626		$	1,226
Components of income tax expense related to continuing operations	'
	Components of income tax expense related to continuing operations were as follows (in millions):
		Year Ended December 31,
		2013			2012			2011
	Current:
	U.S. federal	$	635		$	515		$	562
	U.S. state	36			22			13
	International	82			126			186
	Total current	753			663			761
	Deferred:
	U.S. federal	459			854			527
	U.S. state	59			77			32
	International	(17		)	32			(94		)
	Total deferred	501			963			465
	Income tax expense	$	1,254		$	1,626		$	1,226
Deferred income tax assets and liabilities	'
	The tax effects of significant temporary differences representing deferred income tax assets and liabilities were as follows (in millions):
		December 31,
		2013			2012
	Deferred income tax assets:
	Tax credit carryforwards	$	48		$	61
	Net operating losses (NOLs)	338			247
	Inventories	264			258
	Property, plant, and equipment	8			78
	Compensation and employee benefit liabilities	178			383
	Environmental liabilities	92			83
	Other	187			157
	Total deferred income tax assets	1,115			1,267
	Less: Valuation allowance	(347		)	(304		)
	Net deferred income tax assets	768			963
	Deferred income tax liabilities:
	Property, plant, and equipment	6,536			6,143
	Deferred turnaround costs	331			300
	Inventories	310			381
	Investments, primarily in VLP and DGD	94			—
	Other	81			103
	Total deferred income tax liabilities	7,352			6,927
	Net deferred income tax liabilities	$	6,584		$	5,964
Income tax credit and loss carryforwards	'
	We had the following income tax credit and loss carryforwards as of December 31, 2013 (in millions):
		Amount			Expiration
	U.S. state income tax credits	$	71		2014 through 2027
	U.S. state NOLs (gross amount)	5,609			2014 through 2033
	International NOLs	1,289			Unlimited
Subsequently recognized tax benefits related to the valuation allowance for deferred income tax assets	'
	Should we ultimately recognize tax benefits related to the valuation allowance for deferred income tax assets as of December 31, 2013, such amounts will be allocated as follows (in millions):
	Income tax benefit	$	340
	Additional paid-in capital	7
	Total	$	347
Reconciliation of the change in unrecognized tax benefits, excluding related penalties, interest (net of the U.S. federal and state income tax effects) and the U.S. federal income tax effect of state unrecognized tax benefits	'
	The following is a reconciliation of the change in unrecognized tax benefits, excluding related penalties, interest (net of the U.S. federal and state income tax effects) and the U.S. federal income tax effect of state unrecognized tax benefits (in millions):
		Year Ended December 31,
		2013			2012			2011
	Balance as of beginning of year	$	341		$	326		$	330
	Additions based on tax positions related to the current year	64			11			14
	Additions for tax positions related to prior years	576			40			55
	Reductions for tax positions related to prior years	(26		)	(36		)	(66		)
	Reductions for tax positions related to the lapse of	(4		)	—			(3		)
	applicable statute of limitations
	Settlements	(1		)	—			(4		)
	Balance as of end of year	$	950		$	341		$	326
Reconciliation of unrecognized tax benefits to uncertain tax position liabilities	'
	The following is a reconciliation of unrecognized tax benefits reflected in the table above to our uncertain tax position liabilities as of December 31, 2013 and 2012 that are reflected in Note 10 (in millions):
		December 31,
		2013			2012
	Unrecognized tax benefits	$	950		$	341
	Tax refund claim not recognized in our financial statements	(556		)	—
	Penalties, interest (net of U.S. federal and state income tax	49			50
	effect), and the U.S. federal income tax effect of state
	unrecognized tax benefits
	Uncertain tax position liabilities	$	443		$	391

Earnings_Per_Common_Share_Tabl

Earnings Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Schedule of earnings per common share, basic and diluted	'
	Earnings per common share from continuing operations were computed as follows (dollars and shares in millions, except per share amounts):
		Year Ended December 31,
		2013						2012				2011
		Restricted			Common			Restricted		Common		Restricted		Common
		Stock			Stock			Stock		Stock		Stock		Stock
	Earnings per common share from continuing operations:
	Net income attributable to Valero stockholders from continuing operations				$	2,720				$	2,083			$	2,097
	Less dividends paid:
	Common stock				460					358				168
	Nonvested restricted stock				2					2				1
	Undistributed earnings				$	2,258				$	1,723			$	1,928
	Weighted-average common shares outstanding	3			542			3		550		3		563
	Earnings per common share from continuing operations:
	Distributed earnings	$	0.85		$	0.85		$	0.65	$	0.65	$	0.3	$	0.3
	Undistributed earnings	4.14			4.14			3.12		3.12		3.4		3.4
	Total earnings per common share from continuing operations	$	4.99		$	4.99		$	3.77	$	3.77	$	3.7	$	3.7
	Earnings per common share from continuing operations – assuming dilution:
	Net income attributable to Valero stockholders from continuing operations				$	2,720				$	2,083			$	2,097
	Weighted-average common shares outstanding				542					550				563
	Common equivalent shares:
	Stock options				4					4				4
	Performance awards and nonvested restricted stock				2					2				2
	Weighted-average common shares outstanding –				548					556				569
	assuming dilution
	Earnings per common share from continuing operations – assuming dilution				$	4.97				$	3.75			$	3.69
Potentially dilutive securities excluded from calculation of earnings (loss) per common share - assuming dilution	'
	The following table reflects potentially dilutive securities (in millions) that were excluded from the calculation of “earnings per common share from continuing operations – assuming dilution” as the effect of including such securities would have been antidilutive. These potentially dilutive securities included stock options for which the exercise prices were greater than the average market price of our common shares during each respective reporting period.
		Year Ended December 31,
		2013		2012			2011
	Stock options	1		4			6

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Segment activity, including total assets by reportable segment	'
	Total assets by reportable segment were as follows (in millions):
		December 31,
		2013		2012
	Refining	$	40,834	$	38,858
	Retail	—		2,043
	Ethanol	889		929
	Corporate	5,537		2,647
	Total assets	$	47,260	$	44,477
	The following table reflects activity related to continuing operations (in millions):
		Refining		Retail		Ethanol			Corporate			Total
	Year ended December 31, 2013:
	Operating revenues from external	$	129,064	$	3,896	$	5,114		$	—		$	138,074
	customers
	Intersegment revenues	2,876		—		128			—			3,004
	Depreciation and amortization expense	1,566		41		45			68			1,720
	Operating income (loss)	4,217		81		491			(826		)	3,963
	Total expenditures for long-lived assets	2,597		62		33			65			2,757
	Year ended December 31, 2012:
	Operating revenues from external	122,925		12,008		4,317			—			139,250
	customers
	Intersegment revenues	8,946		—		115			—			9,061
	Depreciation and amortization expense	1,370		119		42			43			1,574
	Operating income (loss)	4,450		348		(47		)	(741		)	4,010
	Total expenditures for long-lived assets	3,147		164		36			66			3,413
	Year ended December 31, 2011:
	Operating revenues from external	109,138		11,699		5,150			—			125,987
	customers
	Intersegment revenues	8,665		—		145			—			8,810
	Depreciation and amortization expense	1,338		115		39			42			1,534
	Operating income (loss)	3,516		381		396			(613		)	3,680
	Total expenditures for long-lived assets	2,708		134		32			113			2,987
Operating revenues from external customers by product	'
	Operating revenues from external customers for our principal products were as follows (in millions):
		Year Ended December 31,
		2013		2012		2011
	Refining:
	Gasolines and blendstocks	$	57,806	$	55,647	$	49,019
	Distillates	56,921		51,504		43,713
	Petrochemicals	4,281		3,908		4,253
	Lubes and asphalts	1,643		2,033		1,948
	Other product revenues	8,413		9,833		10,205
	Total refining operating revenues	129,064		122,925		109,138
	Retail:
	Fuel sales (gasoline and diesel)	3,226		10,045		9,730
	Merchandise sales and other	524		1,649		1,635
	Home heating oil	146		314		334
	Total retail operating revenues	3,896		12,008		11,699
	Ethanol:
	Ethanol	4,245		3,545		4,436
	Distillers grains	869		772		714
	Total ethanol operating revenues	5,114		4,317		5,150
	Total operating revenues	$	138,074	$	139,250	$	125,987
Operating revenues by geographic area of customer	'
	Operating revenues by geographic area are shown in the table below (in millions). The geographic area is based on location of customer and no customer accounted for more than 10 percent of our operating revenues.
		Year Ended December 31,
		2013		2012		2011
	U.S.	$	100,418	$	100,733	$	98,806
	Canada	9,974		10,376		10,110
	U.K.	11,358		10,779		4,297
	Other countries	16,324		17,362		12,774
	Total operating revenues	$	138,074	$	139,250	$	125,987
Geographic information by country for long-lived assets	'
	Geographic information by country for long-lived assets consisted of the following (in millions):
		December 31,
		2013		2012
	U.S.	$	23,572	$	23,760
	Canada	2,260		2,639
	U.K.	1,148		1,110
	Aruba	53		41
	Ireland	26		37
	Total long-lived assets	$	27,059	$	27,587

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information (Tables)	12 Months Ended
	Dec. 31, 2013
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):
		Year Ended December 31,
		2013			2012			2011
	Decrease (increase) in current assets:
	Receivables, net	$	(753	)	$	437		$	(3,110	)
	Inventories	(13		)	(282		)	643
	Income taxes receivable	10			51			128
	Prepaid expenses and other	2			(28		)	(2		)
	Increase (decrease) in current liabilities:
	Accounts payable	977			(113		)	2,004
	Accrued expenses	53			13			(18		)
	Taxes other than income taxes	337			(260		)	312
	Income taxes payable	309			(120		)	124
	Changes in current assets and current liabilities	$	922		$	(302	)	$	81
Cash flows related to interest and income taxes paid	'
	Cash flows related to interest and income taxes paid were as follows (in millions):
		Year Ended December 31,
		2013			2012			2011
	Interest paid in excess of amount capitalized	$	361		$	302		$	397
	Income taxes paid, net	387			705			486

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair value of financial 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 December 31, 2013 and 2012.
	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.
		31-Dec-13
								Total Gross Fair Value		Effect of Counter-party Netting			Effect of Cash Collateral Netting			Net Carrying Value on Balance Sheet		Cash Collateral Paid or Received Not Offset
		Fair Value Hierarchy
		Level 1		Level 2		Level 3
	Assets:
	Commodity derivative contracts	$	499	$	38	$	—	$	537	$	(505	)	$	(7	)	$	25	$	—
	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 contracts	$	492	$	24	$	—	$	516	$	(505	)	$	(6	)	$	5	$	(76	)
	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 contracts	8		—		—		8		n/a			n/a			8		n/a
	Total	$	500	$	40	$	—	$	540	$	(505	)	$	(6	)	$	29
		December 31, 2012
								Total Gross Fair Value		Effect of Counter-party Netting			Effect of Cash Collateral Netting			Net Carrying Value on Balance Sheet		Cash Collateral Paid or Received Not Offset
		Fair Value Hierarchy
		Level 1		Level 2		Level 3
	Assets:
	Commodity derivative contracts	$	1,143	$	60	$	—	$	1,203	$	(1,189	)	$	—		$	14	$	—
	Physical purchase contracts	—		11		—		11		n/a			n/a			11		n/a
	Foreign currency contracts	1		—		—		1		n/a			n/a			1		n/a
	Investments of certain benefit plans	87		—		11		98		n/a			n/a			98		n/a
	Total	$	1,231	$	71	$	11	$	1,313	$	(1,189	)	$	—		$	124
	Liabilities:
	Commodity derivative contracts	$	1,138	$	70	$	—	$	1,208	$	(1,189	)	$	(13	)	$	6	$	(114	)
	Biofuels blending obligation	—		10		—		10		n/a			n/a			10		n/a
	Foreign currency contracts	1		—		—		1		n/a			n/a			1		n/a
	Total	$	1,139	$	80	$	—	$	1,219	$	(1,189	)	$	(13	)	$	17
Reconciliation of the beginning and ending balances for fair value measurements developed using significant unobservable inputs	'
	The following is a reconciliation of the beginning and ending balances (in millions) for fair value measurements developed using significant unobservable inputs (Level 3).
		Investments of						Other Investments
		Certain
		Benefit Plans
		2013		2012		2011		2013		2012			2011
	Balance as of beginning of year	$	11	$	11	$	10	$	—	$	—		$	—
	Purchases	—		—		1		—		—			21
	Total losses included in refining operating expense	—		—		—		—		—			(21		)
	Transfers in and/or out of Level 3	—		—		—		—		—			—
	Balance as of end of year	$	11	$	11	$	11	$	—	$	—		$	—
	The amount of total losses included in income attributable to the change in unrealized losses relating to assets still held at end of year	$	—	$	—	$	—	$	—	$	—		$	(21	)
Fair value of assets measured on a nonrecurring basis	'
	The table below presents the fair value of certain assets that were measured at fair value on a nonrecurring basis as of December 31, 2012 (in millions) and the related impairment losses recognized. See Note 4 for our impairment analysis for these assets.
								Total		Total Losses
								Fair Value		Recognized
								as of		During the
								December 31,		Year Ended
		Fair Value Hierarchy						2012		December 31,
		Level 1		Level 2		Level 3				2012
	Assets:
	Long-lived assets of	$	—	$	—	$	—	$	—	$	903
	the Aruba Refinery
	Materials and supplies	—		—		—		—		25
	inventories of
	the Aruba Refinery
	Cancelled capital projects	—		—		2		2		65
	Property, plant, and equipment	—		—		8		8		21
	of convenience stores
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):
		December 31, 2013				December 31, 2012
		Carrying		Fair		Carrying		Fair
		Amount		Value		Amount		Value
	Financial assets:
	Cash and temporary cash investments	$	4,292	$	4,292	$	1,723	$	1,723
	Financial liabilities:
	Debt (excluding capital leases)	6,525		7,659		7,000		8,621

Price_Risk_Management_Activiti1

Price Risk Management Activities (Tables)	12 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Volume of outstanding contracts	'
	As of December 31, 2013, 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		11,857
	Futures – short		12,169
	Physical contracts – long		312
	As of December 31, 2013, 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		7,261			—
	Swaps – short		7,276			—
	Futures – long		42,205			—
	Futures – short		52,158			—
	Corn:
	Futures – long		17,110			—
	Futures – short		26,095			145
	Physical contracts – long		12,554			156
	Soybean oil:
	Futures – short		25,320			—
	As of December 31, 2013, 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		7,629
	Futures – short		2,314
	Physical contracts – short		5,315
	As of December 31, 2013, 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		25,200			—
	Swaps – short		25,200			—
	Futures – long		84,766			3,490
	Futures – short		84,397			3,665
	Options – long		28,850			—
	Options – short		28,600			—
	Natural gas:
	Futures – long		600			1,000
	Futures – short		1,150			—
	Options – short		250			—
	Corn:
	Futures – long		435			—
	Futures – short		435			—
Fair values of derivative instruments	'
	The following tables provide information about the fair values of our derivative instruments as of December 31, 2013 and 2012 (in millions) and the line items in the balance sheets in which the fair values are reflected. See Note 20 for additional information related to the fair values of our derivative instruments.
	As indicated in Note 20, 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		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
		Balance Sheet		31-Dec-12
		Location		Asset				Liability
				Derivatives				Derivatives
	Derivatives designated as
	hedging instruments
	Commodity contracts:
	Futures	Receivables, net		$	77			$	64
	Swaps	Receivables, net		15				13
	Swaps	Prepaid expenses and other		2				2
	Total			$	94			$	79
	Derivatives not designated as
	hedging instruments
	Commodity contracts:
	Futures	Receivables, net		$	1,066			$	1,073
	Swaps	Receivables, net		9				6
	Swaps	Accrued expenses		32				46
	Options	Receivables, net		1				4
	Options	Accrued expenses		1				—
	Physical purchase contracts	Inventories		11				—
	Foreign currency contracts	Receivables, net		1				—
	Foreign currency contracts	Accrued expenses		—				1
	Total			$	1,121			$	1,130
	Total derivatives			$	1,215			$	1,209
Effect of derivative instruments on income and OCI	'
	Derivatives in Cash Flow		Location of Gain (Loss)		Year Ended December 31,
	Hedging Relationships		Recognized in Income
			on Derivatives		2013				2012			2011
	Commodity contracts:
	Gain (loss) recognized in				$	(4	)		$	45		$	32
	OCI on derivatives
	(effective portion)
	Gain (loss) reclassified from		Cost of sales		(2		)		73			3
	accumulated OCI into
	income (effective portion)
	Gain recognized in		Cost of sales		21				48			5
	income on derivatives
	(ineffective portion)
	Trading Derivatives		Location of Gain (Loss)		Year Ended December 31,
			Recognized in Income
			on Derivatives		2013				2012			2011
	Commodity contracts		Cost of sales		$	21			$	(16	)	$	23
	RINs fixed-price contracts		Cost of sales		(20		)		—			—
	The following tables provide information about the gain or loss recognized in income and other comprehensive income (OCI) 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)		Year Ended December 31,
	Hedging Relationships		Recognized in Income
			on Derivatives		2013				2012			2011
	Commodity contracts:
	Loss recognized in		Cost of sales		$	(12	)		$	(250	)	$	(6	)
	income on derivatives
	Gain (loss) recognized in		Cost of sales		18				183			(23		)
	income on hedged item
	Gain (loss) recognized in		Cost of sales		6				(67		)	(29		)
	income on derivatives
	(ineffective portion)
	Derivatives Designated as		Location of Gain (Loss)		Year Ended December 31,
	Economic Hedges and Other		Recognized in Income
	Derivative Instruments		on Derivatives		2013				2012			2011
	Commodity contracts		Cost of sales		$	193			$	1		$	(349	)
	Foreign currency contracts		Cost of sales		14				(38		)	18
	Other contract		Cost of sales		—				—			29
	Total				$	207			$	(37	)	$	(302	)

Quarterly_Financial_Data_Unaud1

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Schedule of quarterly financial information	'
	The following table summarizes quarterly financial data for the years ended December 31, 2013 and 2012 (in millions, except per share amounts).
		2013 Quarter Ended
		31-Mar			June 30 (a)		30-Sep		31-Dec
	Operating revenues	$	33,474		$	34,034	$	36,137	$	34,429
	Operating income	1,061			808		532		1,562
	Net income	652			465		324		1,287
	Net income attributable to	654			466		312		1,288
	Valero Energy Corporation
	stockholders
	Earnings per common share –	1.18			0.85		0.57		2.38
	assuming dilution
		2012 Quarter Ended
		March 31 (b)			30-Jun		30-Sep		31-Dec
	Operating revenues	$	35,167		$	34,662	$	34,726	$	34,695
	Operating income (loss)	(244		)	1,361		1,309		1,584
	Net income (loss)	(432		)	830		673		1,009
	Net income (loss) attributable to	(432		)	831		674		1,010
	Valero Energy Corporation
	stockholders
	Earnings (loss) per common share –	(0.78		)	1.5		1.21		1.82
	assuming dilution
	____________________
	(a)	The separation of our retail business was completed on May 1, 2013.
	(b)	The operations of the Aruba Refinery were suspended in March 2012.

Basis_of_Presentation_and_Summ2

Basis of Presentation and Summary of Significant Accounting Policies (Details) (USD $)

12 Months Ended

12 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2011

Aug. 01, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

plants

Minimum [Member]

Maximum [Member]

Valero Energy Partners LP [Member]

Diamond Green Holdings LLC [Member]

Diamond Green Holdings LLC [Member]

Diamond Green Holdings LLC [Member]

PI Dock Facilities LLC [Member]

PI Dock Facilities LLC [Member]

PI Dock Facilities LLC [Member]

PI Dock Facilities LLC [Member]

refineries

Variable Interest Entity, Primary Beneficiary [Member]

Variable Interest Entity, Not Primary Beneficiary [Member]

Variable Interest Entity, Primary Beneficiary [Member]

Variable Interest Entity, Not Primary Beneficiary [Member]

branded_wholesale_sites

Basis of Presentation and Summary of Significant Accounting Policies (Textual)

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of refineries owned

16

'

'

'

'

'

'

'

'

'

'

'

'

Combined total throughput capacity of petroleum refining

3,100,000

'

'

'

'

'

'

'

'

'

'

'

'

Number of branded wholesale sites

7,400

'

'

'

'

'

'

'

'

'

'

'

'

Number of ethanol plants owned

10

'

'

'

'

'

'

'

'

'

'

'

'

Combined capacity of ethanol (gallons per year)

1,200,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Noncontrolling interest, ownership percentage by parent

'

15.00%

85.00%

'

'

70.60%

'

'

'

'

'

'

'

Feed capacity of diesel plants

'

'

'

'

'

'

10,000

'

'

'

'

'

'

Joint venture ownership percentage

'

'

'

'

'

'

'

50.00%

50.00%

'

'

50.00%

50.00%

Amount of joint venture construction financing

'

'

'

'

'

'

$221

'

'

$90

$13

'

'

Property, plant, and equipment, useful life

'

'

'

'25 years

'30 years

'

'

'

'

'

'

'

'

Acquisitions_Details

Acquisitions (Details) (USD $)	12 Months Ended				0 Months Ended	3 Months Ended		0 Months Ended	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Aug. 01, 2011	Oct. 02, 2011	Dec. 31, 2012	Dec. 31, 2011	Aug. 01, 2011	Sep. 30, 2012	Dec. 31, 2011
					Meraux Acquisition [Member]	Meraux Acquisition [Member]	Meraux Acquisition [Member]	Pembroke Acquisition [Member]	Pembroke Acquisition [Member]	Pembroke Acquisition [Member]
Purchase Price Allocation	'	'	'	'	'	'	'	'	'	'
Current assets, net of cash acquired	'	'	'	'	'	'	'	'	$2,215,000,000	'
Inventories	'	'	'	'	'	227,000,000	'	'	'	'
Property, plant, and equipment	'	'	'	'	'	293,000,000	'	'	947,000,000	'
Intangible assets	'	'	'	'	'	'	'	'	22,000,000	'
Deferred charges and other assets, net	'	'	'	'	'	28,000,000	'	'	37,000,000	'
Current liabilities, less current portion of debt and capital lease obligations	'	'	'	'	'	'	'	'	-1,294,000,000	'
Debt and capital leases assumed, including current portion	'	'	'	'	'	'	'	'	-12,000,000	'
Deferred income taxes	'	'	'	'	'	'	'	'	-159,000,000	'
Other long-term liabilities	'	'	'	'	'	-1,000,000	'	'	-60,000,000	'
Noncontrolling interest	'	'	'	'	'	'	'	'	-5,000,000	'
Purchase price, net of cash acquired	'	'	'	'	'	547,000,000	'	'	1,691,000,000	'
Acquisitions (Textual)	'	'	'	'	'	'	'	'	'	'
Effective date of acquisition	'	'	'	'	1-Oct-11	'	'	1-Aug-11	'	'
Purchase price of acquired entity	'	'	'	'	586,000,000	'	'	1,800,000,000	'	'
Throughput capacity of petroleum refining (in barrels per day)	'	'	'	'	135,000	'	'	270,000	'	'
Acquisition of Meraux Refinery	0	0	547,000,000	'	'	'	547,000,000	'	'	'
Purchase price allocation adjustment to inventory	'	'	'	'	'	8,000,000	'	'	'	'
Purchase price allocation adjustment to property, plant, and equipment	'	'	'	'	'	-27,000,000	'	'	143,000,000	'
Purchase price allocation adjustment to deferred charges and other assets	'	'	'	'	'	19,000,000	'	'	'	'
Percentage of outstanding shares acquired	'	'	'	'	'	'	'	100.00%	'	'
Purchase price of working capital	'	'	'	'	'	'	'	1,100,000,000	'	'
Acquisition of Pembroke Refinery, net of cash acquired	0	0	1,691,000,000	'	'	'	'	'	'	1,700,000,000
Purchase price allocation adjustment increase to deferred tax liabilities	'	'	'	'	'	'	'	'	124,000,000	'
Purchase price allocation adjustment increase to other long-term liabilities	'	'	'	'	'	'	'	'	17,000,000	'
Depreciation expense true-up	$1,720,000,000	$1,574,000,000	$1,534,000,000	'	'	'	'	'	$6,000,000	'
Joint venture ownership percentage	'	'	15.00%	85.00%	'	'	'	'	'	'

Dispositions_of_Businesses_Det

Dispositions of Businesses (Details) (USD $)

12 Months Ended

0 Months Ended

3 Months Ended

0 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Nov. 14, 2013

1-May-13

Jun. 30, 2013

Nov. 14, 2013

1-May-13

Apr. 16, 2013

1-May-13

1-May-13

Spinoff [Member]

Spinoff [Member]

Spinoff [Member]

Spinoff [Member]

Spinoff [Member]

Spinoff [Member]

Spinoff [Member]

Spinoff [Member]

Notes Payable to Banks [Member]

Notes Payable to Banks [Member]

Sourced From Parent's Short-Term Borrowings [Member]

Sourced From Entity Spunoff [Member]

Cash Proceeds Net of Tax Liability [Member]

Notes Payable to Banks [Member]

Assets

'

'

'

'

'

'

'

'

'

'

'

'

Cash and temporary cash investments

$4,292,000,000

$1,723,000,000

$1,024,000,000

$3,334,000,000

'

$315,000,000

'

'

'

'

'

'

Credit card receivables from Valero

'

'

'

'

'

44,000,000

'

'

'

'

'

'

Other receivables, net

'

'

'

'

'

109,000,000

'

'

'

'

'

'

Inventories

5,758,000,000

5,973,000,000

'

'

'

170,000,000

'

'

'

'

'

'

Deferred income taxes

266,000,000

274,000,000

'

'

'

14,000,000

'

'

'

'

'

'

Prepaid expenses and other

138,000,000

154,000,000

'

'

'

13,000,000

'

'

'

'

'

'

Total current assets

19,277,000,000

16,460,000,000

'

'

'

665,000,000

'

'

'

'

'

'

Property, plant, and equipment, at cost

33,933,000,000

34,132,000,000

'

'

'

1,891,000,000

'

'

'

'

'

'

Accumulated depreciation

-8,226,000,000

-7,832,000,000

'

'

'

-611,000,000

'

'

'

'

'

'

Property, plant, and equipment, net

25,707,000,000

26,300,000,000

'

'

'

1,280,000,000

'

'

'

'

'

'

Intangible assets, net

156,000,000

213,000,000

'

'

'

38,000,000

'

'

'

'

'

'

Deferred charges and other assets, net

2,120,000,000

1,504,000,000

'

'

'

191,000,000

'

'

'

'

'

'

Total assets

47,260,000,000

44,477,000,000

'

'

'

2,174,000,000

'

'

'

'

'

'

Liabilities

'

'

'

'

'

'

'

'

'

'

'

'

Current portion of capital lease obligations

303,000,000

586,000,000

'

'

'

2,000,000

'

'

'

'

'

'

Trade payable to Valero

'

'

'

'

'

242,000,000

'

'

'

'

'

'

Other accounts payable

'

'

'

'

'

96,000,000

'

'

'

'

'

'

Accrued expenses

522,000,000

590,000,000

'

'

'

31,000,000

'

'

'

'

'

'

Taxes other than income taxes

1,345,000,000

1,026,000,000

'

'

'

20,000,000

'

'

'

'

'

'

Total current liabilities

13,123,000,000

11,929,000,000

'

'

'

391,000,000

'

'

'

'

'

'

Debt and capital lease obligations, less current portion

6,261,000,000

6,463,000,000

'

'

'

1,053,000,000

'

'

'

'

'

'

Deferred income taxes

6,601,000,000

5,860,000,000

'

'

'

83,000,000

'

'

'

'

'

'

Other long-term liabilities

1,329,000,000

2,130,000,000

'

'

'

112,000,000

'

'

'

'

'

'

Total liabilities

'

'

'

'

'

1,639,000,000

'

'

'

'

'

'

Separation of Retail Business (Textual)

'

'

'

'

'

'

'

'

'

'

'

'

Spinoff transaction, ownership percentage by Valero stockholders

'

'

'

'

'

80.00%

'

'

'

'

'

'

Cash distributed to Valero by CST Brands, Inc.

500,000,000

0

0

'

'

1,050,000,000

'

'

'

'

500,000,000

546,000,000

Proceeds from short-term debt in anticipation of separation

550,000,000

0

0

'

'

'

'

'

'

550,000,000

'

'

Senior unsecured bonds of CST issued to us

49,000,000

26,000,000

'

'

'

550,000,000

'

'

'

'

'

'

Cash held and retained by CST Brands, Inc. upon separation

315,000,000

0

0

'

'

315,000,000

'

'

'

'

'

'

Tax liability incurred related to business separation

'

'

'

'

'

189,000,000

'

'

'

'

'

'

Cost of separation in general and administrative expenses

'

'

'

'

'

'

30,000,000

'

'

'

'

'

Ownership percentage retained

'

'

'

'

'

20.00%

'

'

'

'

'

'

CST securities exchanged in settlement of short-term borrowings

'

'

'

'

'

'

'

467,000,000

550,000,000

'

'

'

Gain on disposition of retained interest in CST Brands, Inc.

$325,000,000

$0

$0

'

$325,000,000

'

'

'

'

'

'

'

Impairments_Details

Impairments (Details) (USD $)

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Sep. 30, 2012

Mar. 31, 2012

Dec. 31, 2012

Mar. 28, 2012

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Aruba Refinery [Member]

Aruba Refinery [Member]

Aruba Refinery [Member]

Aruba Refinery [Member]

Refining Assets [Member]

Refining Assets [Member]

Inventory Related Assets [Member]

Inventory Related Assets [Member]

Construction in Progress [Member]

Retail Assets [Member]

Impairments (Textual)

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-binding purchase offer

'

'

'

'

'

'

$350

'

'

'

'

'

'

Asset impairment losses

$0

$1,014

$0

$333

$595

$928

'

$308

$903

$25

$25

$65

$21

Initial_Public_Offering_of_Val2

Initial Public Offering of Valero Energy Partners LP (Details) (USD $)

12 Months Ended

0 Months Ended

0 Months Ended

In Millions, except Share data, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Aug. 01, 2011

Dec. 31, 2010

Dec. 31, 2013

Dec. 16, 2013

Dec. 31, 2013

Dec. 16, 2013

Dec. 16, 2013

Dec. 31, 2013

Dec. 31, 2013

Valero Energy Partners LP [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]

General Partner [Member]

Offering [Member]

Over-Allotment Option [Member]

Reconciliation of Net Proceeds from the Offering

'

'

'

'

'

'

'

'

'

'

'

'

Total proceeds from the Offering

'

'

'

'

'

'

$397

'

'

'

'

'

Less offering costs

'

'

'

'

'

'

-28

'

'

'

'

'

Net proceeds from the Offering

369

0

0

'

'

'

369

'

'

'

'

'

Noncontrolling Interest Transactions Textual [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

Common units sold in the Offering

'

'

'

'

'

'

'

'

17,250,000

2,250,000

'

'

Common unit price per unit

'

'

'

'

'

'

'

'

$23

'

'

'

Noncontrolling interest, ownership percentage by parent

'

'

15.00%

85.00%

'

70.60%

'

'

'

'

68.60%

2.00%

Noncontrolling interest, ownership percentage by public

'

'

'

'

'

'

'

'

'

'

29.40%

'

Cash and temporary cash investments

4,292

1,723

1,024

'

3,334

'

'

375

'

'

'

'

Noncontrolling interests

$486

$63

'

'

'

'

'

$370

'

'

'

'

Receivables_Details

Receivables (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Receivables	'	'	'
Accounts receivable	$8,650	$8,061	'
Commodity derivative and foreign currency contract receivables	98	136	'
Notes receivable and other	49	26	'
Receivables, gross	8,797	8,223	'
Allowance for doubtful accounts	-46	-56	-48
Receivables, net	8,751	8,167	'
Movement in Valuation Allowances and Reserves Rollforward	'	'	'
Balance as of beginning of year	56	48	42
Increase in allowance charged to expense	13	21	21
Accounts charged against the allowance, net of recoveries	-23	-13	-14
Foreign currency translation	0	0	-1
Balance as of end of year	$46	$56	$48

Inventories_Details

Inventories (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule of Inventories	'	'	'
Refinery feedstocks	$2,135,000,000	$2,458,000,000	'
Refined products and blendstocks	3,231,000,000	2,995,000,000	'
Ethanol feedstocks and products	166,000,000	191,000,000	'
Convenience store merchandise	0	112,000,000	'
Materials and supplies	226,000,000	217,000,000	'
Inventories	5,758,000,000	5,973,000,000	'
Inventories (Textual)	'	'	'
Effect of LIFO inventory liquidation on income, increase (decrease)	17,000,000	134,000,000	247,000,000
Excess of market value over carrying amount of LIFO inventories	6,900,000,000	6,700,000,000	'
Inventory not valued at LIFO	$851,000,000	$878,000,000	'

Property_Plant_and_Equipment_D

Property, Plant, and Equipment (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant, and Equipment, Net	'	'	'
Property, plant, and equipment, at cost	$33,933,000,000	$34,132,000,000	'
Accumulated depreciation	-8,226,000,000	-7,832,000,000	'
Property, plant, and equipment, net	25,707,000,000	26,300,000,000	'
Property, Plant and Equipment (Textual)	'	'	'
Property, plant, and equipment, capital leases	74,000,000	83,000,000	'
Accumulated amortization on assets under capital leases	-35,000,000	-35,000,000	'
Depreciation expense related to continuing operations	1,200,000,000	1,100,000,000	1,100,000,000
Land [Member]	'	'	'
Property, Plant, and Equipment, Net	'	'	'
Property, plant, and equipment, at cost	404,000,000	802,000,000	'
Crude Oil Processing Facilities (Member)	'	'	'
Property, Plant, and Equipment, Net	'	'	'
Property, plant, and equipment, at cost	27,260,000,000	24,865,000,000	'
Pipeline and Terminal Facilities [Member]	'	'	'
Property, Plant, and Equipment, Net	'	'	'
Property, plant, and equipment, at cost	1,513,000,000	1,471,000,000	'
Grain Processing Equipment [Member]	'	'	'
Property, Plant, and Equipment, Net	'	'	'
Property, plant, and equipment, at cost	719,000,000	694,000,000	'
Retail Facilities (Member)	'	'	'
Property, Plant, and Equipment, Net	'	'	'
Property, plant, and equipment, at cost	0	1,480,000,000	'
Administrative Buildings (Member)	'	'	'
Property, Plant, and Equipment, Net	'	'	'
Property, plant, and equipment, at cost	800,000,000	734,000,000	'
Other [Member]	'	'	'
Property, Plant, and Equipment, Net	'	'	'
Property, plant, and equipment, at cost	2,109,000,000	1,457,000,000	'
Construction in Progress [Member]	'	'	'
Property, Plant, and Equipment, Net	'	'	'
Property, plant, and equipment, at cost	$1,128,000,000	$2,629,000,000	'

Deferred_Charges_and_Other_Ass1

Deferred Charges and Other Assets (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deferred Charges and Other Assets (Textual)	'	'	'
Other deferred cost, amortization expense	$498	$459	$444

Accrued_Expenses_and_Other_Lon2

Accrued Expenses and Other Long-Term Liabilities (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012		Sep. 30, 2012	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2013
In Millions, unless otherwise specified					Aruba Refinery [Member]	Aruba Refinery [Member]	Aruba Refinery [Member]	Aruba Refinery [Member]	Income Taxes Payable [Member]
					employees
Accrued Expenses	'		'		'	'	'	'	'
Defined benefit plan liabilities, current	$30		$32		'	'	'	'	'
Wage and other employee-related liabilities, current	257		282		'	'	'	'	'
Environmental liabilities, current	24		27		'	'	'	'	'
Accrued interest expense, current	90		96		'	'	'	'	'
Derivative liabilities, current	13		14		'	'	'	'	'
Asset retirement obligations, current	5		5		'	'	'	'	'
Other accrued liabilities, current	103		134		'	'	'	'	'
Accrued expenses	522		590		'	'	'	'	'
Other Long-Term Liabilities	'		'		'	'	'	'	'
Defined benefit plan liabilities, noncurrent	507		982		'	'	'	'	'
Wage and other employee-related liabilities, noncurrent	97		91		'	'	'	'	'
Uncertain income tax position liabilities, including related penalties and interest	205	[1]	391	[1]	'	'	'	'	'
Environmental liabilities, noncurrent	277		242		'	'	'	'	'
Derivative liabilities, noncurrent	0		0		'	'	'	'	'
Asset retirement obligations, noncurrent	26		103		'	'	'	'	'
Other accrued liabilities, noncurrent	217		321		'	'	'	'	'
Other long-term liabilities	1,329		2,130		'	'	'	'	'
Uncertain tax position liabilities	443		391		'	'	'	'	'
Uncertain tax position liabilities, current	'		'		'	'	'	'	238
One-Time Severance Benefits (Textual)	'		'		'	'	'	'	'
Number of employees notified of termination	'		'		495	'	'	'	'
Termination date	'		'		15-Nov-12	'	'	'	'
Severance liability	'		'		41	'	'	'	'
Severance payments	'		'		'	10	31	'	'
Severance costs	'		'		'	'	'	$41	'
[1]	As of December 31, 2013, our total liability for uncertain tax positions, including related penalties and interest, was $443 million, with $238 million classified as a current liability and reflected in “Income taxes payable” and the remaining $205 million classified as a long-term liability and reflected in “Other long-term liabilities” as detailed in this table. As of December 31, 2012, our total liability for uncertain tax positions, including related penalties and interest, was classified as a long-term liability and reflected in “Other long-term liabilities” as detailed in this table.

Accrued_Expenses_and_Other_Lon3

Accrued Expenses and Other Long-Term Liabilities, Environmental Matters (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Changes in Environmental Liabilities Rollforward Analysis	'	'	'
Balance as of beginning of year	$269	$274	$268
Additions to liability	67	23	18
Reductions to liability	-1	-1	-5
Payments, net of third-party recoveries	-28	-29	-35
Foreign currency translation	-2	2	-2
Balance as of end of year	301	269	274
Spinoff [Member]	'	'	'
Changes in Environmental Liabilities Rollforward Analysis	'	'	'
Increase (decrease) for acquisition / disposition	-4	0	0
Pembroke Acquisition [Member]	'	'	'
Changes in Environmental Liabilities Rollforward Analysis	'	'	'
Increase (decrease) for acquisition / disposition	$0	$0	$30

Accrued_Expenses_and_Other_Lon4

Accrued Expenses and Other Long-Term Liabilities, Asset Retirement Obligations (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Asset Retirement Obligations Rollforward Analysis	'	'	'
Balance as of beginning of year	$108	$87	$101
Additions to accrual	2	14	3
Revisions in estimated cash flows	0	13	1
Accretion expense	2	5	4
Settlements	-1	-11	-22
Separation of retail business	-80	0	0
Balance as of end of year	$31	$108	$87
Retail Location [Member]	'	'	'
Asset Retirement Obligations (Textual)	'	'	'
Property, plant, and equipment, useful life	'20 years	'	'

Debt_and_Capital_Lease_Obligat2

Debt and Capital Lease Obligations (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Jan. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Jun. 30, 2012

A/R Sales Facility [Member]

A/R Sales Facility [Member]

A/R Sales Facility [Member]

A/R Sales Facility [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Credit Facilities [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Debentures [Member]

Debentures [Member]

Debentures [Member]

Debentures [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Bank Credit Facilities [Member]

Bank Credit Facilities [Member]

A/R Sales Facility [Member]

A/R Sales Facility [Member]

Senior Notes Due In 2015 [Member]

Senior Notes Due In 2015 [Member]

Senior Notes Due In June 2013 [Member]

Senior Notes Due In June 2013 [Member]

Senior Notes Due In June 2013 [Member]

Senior Notes Due In 2014 [Member]

Senior Notes Due In 2014 [Member]

Senior Notes Due In June 2017 [Member]

Senior Notes Due In June 2017 [Member]

Senior Notes Due In 2020 [Member]

Senior Notes Due In 2020 [Member]

Senior Notes Due In June 2037 [Member]

Senior Notes Due In June 2037 [Member]

Senior Notes Due In January 2013 [Member]

Senior Notes Due In January 2013 [Member]

Senior Notes Due In January 2013 [Member]

Senior Notes Due In October 2037 [Member]

Senior Notes Due In October 2037 [Member]

Senior Notes Due In October 2017 [Member]

Senior Notes Due In October 2017 [Member]

Senior Notes Due In 2097 [Member]

Senior Notes Due In 2097 [Member]

Senior Notes Due In 2032 [Member]

Senior Notes Due In 2032 [Member]

Senior Notes Due In 2030 [Member]

Senior Notes Due In 2030 [Member]

Senior Notes Due In 2019 [Member]

Senior Notes Due In 2019 [Member]

Senior Notes Due In 2039 [Member]

Senior Notes Due In 2039 [Member]

Debenture Due In 2026 [Member]

Debenture Due In 2026 [Member]

Debenture Due In 2015 [Member]

Debenture Due In 2015 [Member]

Gulf Opportunity Zone Revenue Bonds Series 2010 [Member]

Gulf Opportunity Zone Revenue Bonds Series 2010 [Member]

Gulf Opportunity Zone Revenue Bonds Series 2010 [Member]

Debt Instruments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt instruments maturity date (year)

'

'

'

'

'

'

'

'

'2014

'

'2015

'

'2013

'

'

'2014

'

'2017

'

'2020

'

'2037

'

'2013

'

'

'2037

'

'2017

'

'2097

'

'2032

'

'2030

'

'2019

'

'2039

'

'2026

'

'2015

'

'2040

'

'

Bank credit facilities

'

'

'

'

'

'

$0

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior notes

'

'

'

'

'

'

'

'

'

'

400,000,000

400,000,000

0

'

300,000,000

200,000,000

200,000,000

750,000,000

750,000,000

850,000,000

850,000,000

1,500,000,000

1,500,000,000

0

'

180,000,000

24,000,000

24,000,000

200,000,000

200,000,000

100,000,000

100,000,000

750,000,000

750,000,000

200,000,000

200,000,000

750,000,000

750,000,000

250,000,000

250,000,000

'

'

'

'

'

'

'

Debentures

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100,000,000

100,000,000

75,000,000

75,000,000

'

'

'

Revenue bonds

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

300,000,000

300,000,000

'

Accounts receivable sales facility

'

'

100,000,000

100,000,000

250,000,000

100,000,000

'

'

100,000,000

100,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net unamortized discount, including fair value adjustments

-24,000,000

-29,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total debt

6,525,000,000

7,000,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Capital lease obligations, including unamortized fair value adjustments

39,000,000

49,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total debt and capital lease obligations

6,564,000,000

7,049,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Less current portion

-303,000,000

-586,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt and capital lease obligations, less current portion

$6,261,000,000

$6,463,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate of notes in percentage

'

'

'

'

'

'

'

'

'

'

4.50%

'

4.75%

4.75%

'

4.75%

'

6.13%

'

6.13%

'

6.63%

'

6.70%

6.70%

'

6.75%

'

7.20%

'

7.45%

'

7.50%

'

8.75%

'

9.38%

'

10.50%

'

7.65%

'

8.75%

'

4.00%

'

4.00%

Debt_Credit_Facilities_and_Ban

Debt, Credit Facilities and Bank Debt (Details)

12 Months Ended

0 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Nov. 14, 2013

1-May-13

Nov. 14, 2013

1-May-13

Oct. 24, 2013

Apr. 16, 2013

Dec. 31, 2013

Dec. 31, 2012

Mar. 20, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Nov. 29, 2012

Dec. 31, 2013

Dec. 31, 2012

Nov. 14, 2013

Dec. 31, 2013

Nov. 14, 2013

USD ($)

USD ($)

USD ($)

Spinoff [Member]

Spinoff [Member]

Spinoff [Member]

Spinoff [Member]

Spinoff [Member]

Spinoff [Member]

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 ($)

Notes Payable to Banks [Member]

Notes Payable to Banks [Member]

Notes Payable to Banks [Member]

Notes Payable to Banks [Member]

USD ($)

USD ($)

Spinoff [Member]

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]

Canadian Revolver [Member]

Canadian Revolver [Member]

Canadian Revolver [Member]

Canadian Revolver [Member]

Canadian Revolver Letter of Credit [Member]

Canadian Revolver Letter of Credit [Member]

VLP Revolver [Member]

VLP Revolver [Member]

VLP Revolver [Member]

USD ($)

USD ($)

USD ($)

Sourced From Parent's Short-Term Borrowings [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Maximum [Member]

USD ($)

USD ($)

CAD

CAD

CAD

CAD

CAD

CAD

USD ($)

USD ($)

Maximum [Member]

USD ($)

quarter

renewal

Line of Credit Facility

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit facility, maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

$800,000,000

$550,000,000

'

$3,000,000,000

'

'

'

'

'

50,000,000

'

'

115,000,000

'

'

$300,000,000

'

'

Line of credit facility, expiration date (month, year)

'

'

'

'

'

'

'

'

'

'

'

'

'June 2014

'

'November 2018

'

'

'

'

'

'November 2014

'

'

'

'

'

'December 2018

'

'

Amount outstanding

'

'

'

'

'

'

'

'

'

189,000,000

275,000,000

'

278,000,000

418,000,000

'

'

'

'

59,000,000

59,000,000

'

'

'

'

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

'

'

Line of credit facility, duration of renewal option (in years)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

'

'

'1 year

'

'

Debt to capitalization ratios as per terms of revolver

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.12

0.23

'

0.6

'

'

'

'

'

'

'

'

'

'

'

Line of credit facility, number of renewal options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4

'

'

Debt to EBITDA ratio as per terms of revolver

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5

Borrowings from long-term lines of credit

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

1,100,000,000

0

'

'

'

0

0

0

'

'

'

'

0

'

Repayments of long-term lines of credit

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

1,100,000,000

0

'

'

'

0

0

0

'

'

'

'

0

'

Proceeds from short-term debt in anticipation of separation

550,000,000

0

0

'

'

'

'

'

550,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior unsecured bonds of CST issued to us

49,000,000

26,000,000

'

'

550,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

CST securities exchanged in settlement of short-term borrowings

'

'

'

'

'

467,000,000

550,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from short-term debt related to disposition of retained interest

525,000,000

0

0

'

'

'

'

525,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Repayment of short-term debt related to disposition of retained interest

'

'

'

'

'

58,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments for (Proceeds from) Other Investing Activities

57,000,000

101,000,000

76,000,000

19,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain on disposition of retained interest in CST Brands, Inc.

$325,000,000

$0

$0

$325,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt_NonBank_Debt_Details

Debt, Non-Bank Debt (Details) (USD $)

1 Months Ended

1 Months Ended

1 Months Ended

1 Months Ended

0 Months Ended

1 Months Ended

1 Months Ended

Jan. 31, 2013

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Feb. 28, 2011

31-May-11

Dec. 31, 2013

Mar. 31, 2012

Dec. 31, 2013

Mar. 31, 2012

Dec. 31, 2013

Mar. 31, 2012

Dec. 31, 2013

Mar. 31, 2012

Apr. 30, 2012

Dec. 31, 2013

Mar. 31, 2012

Apr. 30, 2011

3-May-12

Dec. 31, 2011

Apr. 30, 2011

Jun. 30, 2012

Feb. 28, 2011

Dec. 31, 2013

Dec. 31, 2011

Apr. 30, 2011

Dec. 31, 2011

Apr. 30, 2011

Apr. 30, 2012

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Revenue Bonds [Member]

Notes [Member]

Senior Notes Due In January 2013 [Member]

Senior Notes Due In January 2013 [Member]

Senior Notes Due In June 2013 [Member]

Senior Notes Due In June 2013 [Member]

Senior Notes Due In February 2011 [Member]

Senior Notes Due In May 2011 [Member]

Tax Exempt Waste Disposal Revenue Bonds Series 1997 [Member]

Tax Exempt Waste Disposal Revenue Bonds Series 1997 [Member]

Tax Exempt Waste Disposal Revenue Bonds Series 1998 [Member]

Tax Exempt Waste Disposal Revenue Bonds Series 1998 [Member]

Tax Exempt Waste Disposal Revenue Bonds Series 1999 [Member]

Tax Exempt Waste Disposal Revenue Bonds Series 1999 [Member]

Tax Exempt Waste Disposal Revenue Bonds Series 2001 [Member]

Tax Exempt Waste Disposal Revenue Bonds Series 2001 [Member]

Tax Exempt Revenue Refunding Bonds Series 1997A [Member]

Tax Exempt Revenue Refunding Bonds Series 1997A [Member]

Tax Exempt Revenue Refunding Bonds Series 1997A [Member]

Tax Exempt Revenue Refunding Bonds Series 1997A [Member]

Industrial Revenue Bonds Tax Exempt Refunding Bonds [Member]

Industrial Revenue Bonds Tax Exempt Refunding Bonds [Member]

Industrial Revenue Bonds Tax Exempt Refunding Bonds [Member]

Gulf Opportunity Zone Revenue Bonds Series 2010 [Member]

Gulf Opportunity Zone Revenue Bonds Series 2010 [Member]

Gulf Opportunity Zone Revenue Bonds Series 2010 [Member]

Tax Exempt Revenue Refunding Bonds Series 1997B [Member]

Tax Exempt Revenue Refunding Bonds Series 1997B [Member]

Tax Exempt Revenue Refunding Bonds Series 1997C [Member]

Tax Exempt Revenue Refunding Bonds Series 1997C [Member]

Notes Due In 2012 [Member]

Non-Bank Debt (Textual)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt repayments

$180,000,000

'

$300,000,000

'

$210,000,000

$200,000,000

'

'

'

'

'

'

'

'

$4,000,000

'

'

'

$108,000,000

$56,000,000

$8,000,000

'

$300,000,000

'

'

'

'

'

$750,000,000

Interest rate of notes in percentage

6.70%

6.70%

4.75%

4.75%

6.75%

6.13%

5.60%

5.60%

5.60%

5.60%

5.70%

5.70%

6.65%

6.65%

5.45%

5.45%

5.45%

5.45%

'

'

'

4.00%

'

4.00%

5.40%

5.40%

5.40%

5.40%

6.88%

Redemption value in percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

100.00%

'

'

'

'

'

'

'

'

'

Proceeds from advances for construction

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$300,000,000

'

'

'

'

'

'

'

Debt instrument, maturity date (month, day, year)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1-Dec-40

'

'

'

'

'

'

'

Debt instrument, mandatory tender date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1-Jun-22

'

'

'

'

'

'

'

Debt_Accounts_Receivable_Sales

Debt, Accounts Receivable Sales Facility and Capitalized Interest (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Capitalized Interest (Textual)	'	'	'
Interest costs incurred, capitalized	$118,000,000	$221,000,000	$152,000,000
A/R Sales Facility [Member]	'	'	'
Accounts Receivable Sales Facility	'	'	'
Balance as of beginning of year	100,000,000	250,000,000	100,000,000
Proceeds from the sale of receivables	0	1,500,000,000	150,000,000
Repayments	0	-1,650,000,000	0
Balance as of end of year	100,000,000	100,000,000	250,000,000
Credit Facilities [Member] | A/R Sales Facility [Member]	'	'	'
Accounts Receivable Sales Facility (Textual)	'	'	'
Line of credit facility, maximum borrowing capacity	1,500,000,000	'	'
Extended term of accounts receivable sales facility	'July 2014	'	'
Designated pool of accounts receivable	$3,300,000,000	$3,200,000,000	'

Debt_Principal_Payments_Due_on

Debt, Principal Payments Due on Debt and Capital Lease Obligations (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Principal Payments Due on Debt	'	'
2014	$300	'
2015	475	'
2016	0	'
2017	950	'
2018	0	'
Thereafter	4,824	'
Net unamortized discount and fair value adjustments	-24	-29
Total debt	6,525	7,000
Future Minimum Rental on Capital Lease Obligations	'	'
2014	8	'
2015	8	'
2016	7	'
2017	7	'
2018	6	'
Thereafter	27	'
Capital lease, net unamortized fair value adjustment	1	'
Less interest expense	-25	'
Total capital lease obligations	$39	$49

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Future Minimum Rental Payments	'	'	'
Operating leases minimum payments due in 2014	$305	'	'
Operating leases minimum payments due in 2015	230	'	'
Operating leases minimum payments due in 2016	162	'	'
Operating leases minimum payments due in 2017	111	'	'
Operating leases minimum payments due in 2018	95	'	'
Operating leases minimum payments due - Thereafter	321	'	'
Total minimum rental payments under operating leases	1,224	'	'
Minimum rentals to be received under subleases	21	'	'
Rental Expense	'	'	'
Minimum rental expense	574	508	523
Contingent rental expense	7	23	23
Total rental expense	581	531	546
Less sublease rental income	0	-2	-2
Net rental expense	581	529	544
Commitments and Contingencies (Textual)	'	'	'
Minimum range of possible loss contingency	0	'	'
Maximum range of possible loss contingency	$200	'	'

Equity_Stock_Related_Disclosur

Equity, Stock Related Disclosures (Details) (USD $)

1 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

Feb. 28, 2008

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Jan. 22, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Jan. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Jan. 31, 2014

Approvals Under Program One [Member]

Approvals Under Program Two [Member]

Shares Purchased Under Programs, Cost [Member]

Shares Purchased Under Programs, Cost [Member]

Subsequent Event [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock [Member]

Treasury Stock [Member]

Treasury Stock [Member]

Treasury Stock [Member]

Treasury Stock [Member]

Treasury Stock [Member]

Treasury Stock [Member]

Treasury Stock [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]

Dividend Declared [Member]

Shares Purchased Under Programs, Cost [Member]

Shares Purchased Under Programs, Cost [Member]

Shares Purchased Under Programs, Cost [Member]

Shares Purchased Under Programs, Cost [Member]

Shares Purchased Under Programs, Cost [Member]

Subsequent Event [Member]

Treasury Stock [Member]

Treasury Stock [Member]

Treasury Stock [Member]

Treasury Stock [Member]

Treasury Stock [Member]

Treasury Stock [Member]

Shares Purchased Under Programs, Cost [Member]

Subsequent Event [Member]

Share Activity Rollforward

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Stock, Beginning Balance

'

'

'

'

'

'

'

673,000,000

673,000,000

673,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Treasury Stock, Beginning Balance

'

-121,406,520

'

'

'

'

'

'

'

'

'

'

-121,000,000

-117,000,000

-105,000,000

'

'

'

'

'

'

'

'

'

'

Transactions in connection with stock-based compensation plans:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock issuances

'

'

'

'

'

'

'

0

0

0

'

'

6,000,000

6,000,000

5,000,000

'

'

'

'

'

'

'

'

'

'

Stock repurchases

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-6,000,000

-6,000,000

-17,000,000

-17,000,000

-4,000,000

-4,000,000

Common Stock, Ending Balance

'

'

'

'

'

'

'

673,000,000

673,000,000

673,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Treasury Stock, Ending Balance

'

-137,932,138

'

'

'

'

'

'

'

'

'

'

-138,000,000

-121,000,000

-117,000,000

'

'

'

'

'

'

'

'

'

'

Equity (Textual)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock, shares authorized

'

20,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock, par value per share

'

$0.01

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock purchase program, date approved

28-Feb-08

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Authorized amount under stock purchase program

'

'

$6,000,000,000

$3,000,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock repurchases under buyback program

'

'

'

'

692,000,000

118,000,000

'

'

'

'

0

0

'

'

'

692,000,000

118,000,000

0

208,000,000

'

'

'

'

'

'

Remaining amount authorized under stock purchase programs

'

$2,600,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock repurchases

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,000,000

6,000,000

17,000,000

17,000,000

4,000,000

4,000,000

Dividends payable, date declared

'

'

'

'

'

'

22-Jan-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividends payable, amount per share

'

'

'

'

'

'

$0.25

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividends payable, date to be paid

'

'

'

'

'

'

12-Mar-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividends payable, date of record

'

'

'

'

'

'

12-Feb-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity_Income_Tax_Effects_on_O

Equity, Income Tax Effects on Other Comprehensive Income (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Effects Related to Components of Other Comprehensive Income	'	'	'
Foreign currency translation adjustment, before-tax amount	($98)	$164	($122)
Pension and other postretirement benefits:	'	'	'
Net actuarial gain (loss) arising during the year, before-tax amount	367	-228	-285
Plan amendments, before tax amount	371	'	'
Prior service cost arising during the year, before tax amount	'	-9	-4
(Gain) loss reclassified into income related to:	'	'	'
Net actuarial loss, before-tax amount	57	34	14
Prior service credit, before-tax amount	-33	-20	-21
Settlement, before-tax amount	1	12	4
Net gain (loss) on pension and other postretirement benefits, before tax amount	763	-211	-292
Derivative instruments designated and qualifying as cash flow hedges:	'	'	'
Net gain (loss) arising during the year, before-tax amount	-4	45	32
Net (gain) loss reclassified into income, before-tax amount	2	-73	-3
Net gain (loss) on derivative instruments designated and qualifying as cash flow hedges, before-tax amount	-2	-28	29
Other comprehensive income (loss) before tax amount	663	-75	-385
Foreign currency translation adjustment, tax expense (benefit)	0	0	0
Pension and other postretirement benefits:	'	'	'
Net actuarial gain (loss) arising during the year, tax expense (benefit)	125	-79	-100
Plan amendments, tax benefit	130	'	'
Prior service cost, tax benefit	'	-3	-1
(Gain) loss reclassified into income related to:	'	'	'
Amortization of net actuarial loss, tax expense	20	12	4
Amortization of prior service credit, tax benefit	-12	-7	-7
Settlement, tax expense	0	0	1
Net gain (loss) on pension and other postretirement benefits, tax expense (benefit)	263	-77	-103
Derivative instruments designated and qualifying as cash flow hedges:	'	'	'
Net gain (loss) arising during the year, tax expense (benefit)	-2	16	11
Net (gain) loss reclassified into income, tax expense (benefit)	1	-26	-1
Net gain (loss) on cash flow hedges, tax expense (benefit)	-1	-10	10
Other comprehensive income (loss) tax expense (benefit)	262	-87	-93
Foreign currency translation adjustment, net	-98	164	-122
Pension and other postretirement benefits:	'	'	'
Net actuarial gain (loss) arising during the year, net	242	-149	-185
Plan amendments, net	241	'	'
Prior service cost, net	'	-6	-3
(Gain) loss reclassified into income related to:	'	'	'
Amortization of net actuarial loss, net	37	22	10
Amortization of prior service credit, net	-21	-13	-14
Settlement, net	1	12	3
Net gain (loss) on pension and other postretirement benefits, net	-500	134	189
Derivative instruments designated and qualifying as cash flow hedges:	'	'	'
Net gain (loss) arising during the year, net	-2	29	21
Net (gain) loss reclassified into income, net	1	-47	-2
Net gain (loss) on cash flow hedges, net	-1	-18	19
Other comprehensive income (loss)	$401	$12	($292)

Equity_Changes_in_Accumulated_

Equity, Changes in Accumulated Other Comprehensive Income (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Changes in Accumulated Other Comprehensive Income by Component, Net of Tax	'	'	'
Accumulated other comprehensive income (loss), net of tax	$108	'	'
Other comprehensive income (loss), net of tax	401	12	-292
Separation of retail business	-479	'	'
Accumulated other comprehensive income (loss), net of tax	350	108	'
Accumulated Other Comprehensive Income (Loss) [Member]	'	'	'
Changes in Accumulated Other Comprehensive Income by Component, Net of Tax	'	'	'
Accumulated other comprehensive income (loss), net of tax	108	96	388
Other comprehensive income (loss), before reclassifications, net of tax	383	'	'
Amounts reclassified from accumulated other comprehensive income (loss)	18	'	'
Other comprehensive income (loss), net of tax	401	12	-292
Separation of retail business	-159	'	'
Accumulated other comprehensive income (loss), net of tax	350	108	96
Accumulated Translation Adjustment [Member]	'	'	'
Changes in Accumulated Other Comprehensive Income by Component, Net of Tax	'	'	'
Accumulated other comprehensive income (loss), net of tax	665	501	623
Other comprehensive income (loss), before reclassifications, net of tax	-98	'	'
Amounts reclassified from accumulated other comprehensive income (loss)	0	'	'
Other comprehensive income (loss), net of tax	-98	164	-122
Separation of retail business	-159	'	'
Accumulated other comprehensive income (loss), net of tax	408	665	501
Accumulated Defined Benefit Plans Adjustment [Member]	'	'	'
Changes in Accumulated Other Comprehensive Income by Component, Net of Tax	'	'	'
Accumulated other comprehensive income (loss), net of tax	-558	-424	-235
Other comprehensive income (loss), before reclassifications, net of tax	483	'	'
Amounts reclassified from accumulated other comprehensive income (loss)	17	'	'
Other comprehensive income (loss), net of tax	500	-134	-189
Separation of retail business	0	'	'
Accumulated other comprehensive income (loss), net of tax	-58	-558	-424
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	'	'	'
Changes in Accumulated Other Comprehensive Income by Component, Net of Tax	'	'	'
Accumulated other comprehensive income (loss), net of tax	1	19	0
Other comprehensive income (loss), before reclassifications, net of tax	-2	'	'
Amounts reclassified from accumulated other comprehensive income (loss)	1	'	'
Other comprehensive income (loss), net of tax	-1	-18	19
Separation of retail business	0	'	'
Accumulated other comprehensive income (loss), net of tax	$0	$1	$19

Equity_Reclassification_Out_of

Equity, Reclassification Out of Accumulated Other Comprehensive Income (Loss) (Details) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Amortization of items related to defined benefit pension plans:

'

'

'

'

'

'

'

'

'

'

'

Net actuarial loss, before-tax amount

'

'

'

'

'

'

'

'

$57

$34

$14

Prior service credit, before-tax amount

'

'

'

'

'

'

'

'

-33

-20

-21

Settlement, before-tax amount

'

'

'

'

'

'

'

'

1

12

4

Income (loss) from continuing operations before income taxes, extraordinary items, noncontrolling interest

'

'

'

'

'

'

'

'

3,982

3,706

3,322

Income tax benefit

'

'

'

'

'

'

'

'

-1,254

-1,626

-1,226

Net income

1,287

324

465

[1]

652

1,009

673

830

-432

[1],[2]

2,728

2,080

2,089

Reclassification out of Accumulated Other Comprehensive Income [Member]

'

'

'

'

'

'

'

'

'

'

'

Amortization of items related to defined benefit pension plans:

'

'

'

'

'

'

'

'

'

'

'

Net income

'

'

'

'

'

'

'

'

-18

'

'

Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]

'

'

'

'

'

'

'

'

'

'

'

Amortization of items related to defined benefit pension plans:

'

'

'

'

'

'

'

'

'

'

'

Net actuarial loss, before-tax amount

'

'

'

'

'

'

'

'

-57

'

'

Prior service credit, before-tax amount

'

'

'

'

'

'

'

'

33

'

'

Settlement, before-tax amount

'

'

'

'

'

'

'

'

-1

'

'

Income (loss) from continuing operations before income taxes, extraordinary items, noncontrolling interest

'

'

'

'

'

'

'

'

-25

'

'

Income tax benefit

'

'

'

'

'

'

'

'

8

'

'

Net income

'

'

'

'

'

'

'

'

-17

'

'

Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]

'

'

'

'

'

'

'

'

'

'

'

Amortization of items related to defined benefit pension plans:

'

'

'

'

'

'

'

'

'

'

'

Income (loss) from continuing operations before income taxes, extraordinary items, noncontrolling interest

'

'

'

'

'

'

'

'

-2

'

'

Income tax benefit

'

'

'

'

'

'

'

'

1

'

'

Net income

'

'

'

'

'

'

'

'

-1

'

'

Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Commodity Contract [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]

'

'

'

'

'

'

'

'

'

'

'

Amortization of items related to defined benefit pension plans:

'

'

'

'

'

'

'

'

'

'

'

Cost of goods sold

'

'

'

'

'

'

'

'

($2)

'

'

[1]

The separation of our retail business was completed on May 1, 2013.

[2]

The operations of the Aruba Refinery were suspended in March 2012.

Employee_Benefit_Plans_Details

Employee Benefit Plans (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Remeasurement due to plan amendments	$371	'	'
Changes in plan assets (a):	'	'	'
Fair value of plan assets at beginning of year	1,729	'	'
Fair value of plan assets at end of year	1,909	1,729	'
Defined Benefit Plan, Assets for Plan Benefits	'	'	'
Accrued expenses	-30	-32	'
Other long-term liabilities	-507	-982	'
Employee Benefit Plans (Textual)	'	'	'
Contributions to defined contribution plans	62	61	59
Pension Plans [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Remeasurement due to plan amendments	328	0	0
Initial effect of defined benefit plan amendment	-328	'	'
Changes in benefit obligation:	'	'	'
Benefit obligation at beginning of year	2,307	1,881	'
Service cost	137	140	104
Interest cost	86	93	85
Participant contributions	0	0	'
Plan amendments	-274	9	'
Curtailment gain	-6	-16	'
Benefits paid	-170	-90	'
Actuarial (gain) loss	-169	289	'
Other	3	1	'
Benefit obligation at end of year	1,914	2,307	1,881
Changes in plan assets (a):	'	'	'
Fair value of plan assets at beginning of year	1,729	1,487	'
Actual return on plan assets	306	167	'
Valero contributions	41	164	'
Participant contributions	0	0	'
Benefits paid	-170	-90	'
Other	3	1	'
Fair value of plan assets at end of year	1,909	1,729	1,487
Reconciliation of funded status (a):	'	'	'
Funded status at end of year	-5	-578	'
Accumulated benefit obligation	1,811	1,857	'
Defined Benefit Plan, Assets for Plan Benefits	'	'	'
Deferred charges and other assets, net	208	0	'
Accrued expenses	-11	-11	'
Other long-term liabilities	-202	-567	'
Defined benefit plan, amounts recognized in balance sheet, total	-5	-578	'
Other Postretirement Benefit Plans [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Remeasurement due to plan amendments	43	0	0
Initial effect of defined benefit plan amendment	-43	'	'
Changes in benefit obligation:	'	'	'
Benefit obligation at beginning of year	436	438	'
Service cost	12	12	11
Interest cost	18	21	22
Participant contributions	15	14	'
Plan amendments	-43	0	'
Curtailment gain	0	0	'
Benefits paid	-37	-35	'
Actuarial (gain) loss	-77	-17	'
Other	0	3	'
Benefit obligation at end of year	324	436	438
Changes in plan assets (a):	'	'	'
Fair value of plan assets at beginning of year	0	0	'
Actual return on plan assets	0	0	'
Valero contributions	19	19	'
Participant contributions	15	14	'
Benefits paid	-37	-35	'
Other	3	2	'
Fair value of plan assets at end of year	0	0	0
Reconciliation of funded status (a):	'	'	'
Funded status at end of year	-324	-436	'
Defined Benefit Plan, Assets for Plan Benefits	'	'	'
Deferred charges and other assets, net	0	0	'
Accrued expenses	-19	-21	'
Other long-term liabilities	-305	-415	'
Defined benefit plan, amounts recognized in balance sheet, total	($324)	($436)	'

Employee_Benefit_Plans_Aggrega

Employee Benefit Plans, Aggregate Projected Benefit Obligation (Details) (Pension Plans [Member], USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Pension Plans [Member]	'	'
The Total Projected Benefit Obligation, Accumulated Benefit Obligation, and Fair Value of Plan Assets for our Pension Plans for which the Accumulated Benefit Obligation Exceeded the Fair Value of Plan Assets	'	'
Projected benefit obligation	$215	$250
Accumulated benefit obligation	168	191
Fair value of plan assets	$3	$31

Employee_Benefit_Plans_Benefit

Employee Benefit Plans, Benefit Payments (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Pension Plans [Member]	'
Estimated Future Benefit Payments	'
2014	$100
2015	125
2016	116
2017	127
2018	146
Years 2019-2023	820
Employee Benefit Plans (Textual)	'
Future employer contributions to pension and other postretirement plans	38
Other Postretirement Benefit Plans [Member]	'
Estimated Future Benefit Payments	'
2014	19
2015	19
2016	20
2017	20
2018	21
Years 2019-2023	107
Employee Benefit Plans (Textual)	'
Future employer contributions to pension and other postretirement plans	$19

Employee_Benefit_Plans_Compone

Employee Benefit Plans, Components of Net Periodic Benefit Costs (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Benefit Plans (Textual)	'	'	'
The percentage of the higher of the projected benefit obligation or market-related value of plan assets in excess of which net actuarial losses are amortized	10.00%	'	'
Pension Plans [Member]	'	'	'
Components of net periodic benefit cost:	'	'	'
Service cost	$137	$140	$104
Interest cost	86	93	85
Expected return on plan assets	-131	-125	-112
Amortization of:	'	'	'
Prior service cost (credit)	-19	3	2
Net actuarial loss	57	33	12
Special charges (credits)	-5	-3	4
Net periodic benefit cost	125	141	95
Other Postretirement Benefit Plans [Member]	'	'	'
Components of net periodic benefit cost:	'	'	'
Service cost	12	12	11
Interest cost	18	21	22
Expected return on plan assets	0	0	0
Amortization of:	'	'	'
Prior service cost (credit)	-14	-23	-23
Net actuarial loss	0	1	2
Special charges (credits)	0	0	4
Net periodic benefit cost	$16	$11	$16

Employee_Benefit_Plans_Amounts

Employee Benefit Plans, Amounts Recognized in Other Comprehensive Income (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net gain (loss) arising during the year:	'	'	'
Net actuarial gain (loss) arising during the year	$367	($228)	($285)
Prior service cost arising during the year	'	-9	-4
Remeasurement due to plan amendments	371	'	'
Net (gain) loss reclassified into income:	'	'	'
Net actuarial loss	57	34	14
Prior service cost (credit)	-33	-20	-21
Curtailment and settlement loss	1	12	4
Total changes in other comprehensive income (loss)	763	-211	-292
Pension Plans [Member]	'	'	'
Net gain (loss) arising during the year:	'	'	'
Net actuarial gain (loss) arising during the year	290	-245	-294
Prior service cost arising during the year	0	-9	-4
Remeasurement due to plan amendments	328	0	0
Net (gain) loss reclassified into income:	'	'	'
Net actuarial loss	57	33	12
Prior service cost (credit)	-19	3	2
Curtailment and settlement loss	1	12	4
Total changes in other comprehensive income (loss)	657	-206	-280
Other Postretirement Benefit Plans [Member]	'	'	'
Net gain (loss) arising during the year:	'	'	'
Net actuarial gain (loss) arising during the year	77	17	9
Prior service cost arising during the year	0	0	0
Remeasurement due to plan amendments	43	0	0
Net (gain) loss reclassified into income:	'	'	'
Net actuarial loss	0	1	2
Prior service cost (credit)	-14	-23	-23
Curtailment and settlement loss	0	0	0
Total changes in other comprehensive income (loss)	$106	($5)	($12)

Employee_Benefit_Plans_PreTax_

Employee Benefit Plans, Pre-Tax Amounts in Accumulated Other Comprehensive Income (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Pension Plans [Member]	'	'
Pension and Other Postretirement Benefit Plans Accumulated Other Comprehensive Income (Loss), before Tax	'	'
Prior service cost (credit)	($233)	$21
Net actuarial loss (gain)	479	882
Accumulated other comprehensive (income) loss	246	903
Other Postretirement Benefit Plans [Member]	'	'
Pension and Other Postretirement Benefit Plans Accumulated Other Comprehensive Income (Loss), before Tax	'	'
Prior service cost (credit)	-110	-81
Net actuarial loss (gain)	-44	34
Accumulated other comprehensive (income) loss	($154)	($47)

Employee_Benefit_Plans_Net_Per

Employee Benefit Plans, Net Periodic Benefit Costs Amortized from Accumulated Other Comprehensive Income (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Pension Plans [Member]	'
Pension and Other Postretirement Benefit Plans Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	'
Amortization of prior service credit	($22)
Amortization of net actuarial loss (gain)	35
Total	13
Other Postretirement Benefit Plans [Member]	'
Pension and Other Postretirement Benefit Plans Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	'
Amortization of prior service credit	-18
Amortization of net actuarial loss (gain)	-1
Total	($19)

Employee_Benefit_Plans_Weighte

Employee Benefit Plans, Weighted-Average Assumptions (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Minimum [Member]	'	'	'
Employee Benefit Plans (Textual)	'	'	'
Yield curve maturities	'6 months	'	'
Maximum [Member]	'	'	'
Employee Benefit Plans (Textual)	'	'	'
Yield curve maturities	'99 years	'	'
Pension Plans [Member]	'	'	'
Weighted Average Assumptions Used to Determine Benefit Obligation	'	'	'
Discount rate	4.92%	4.28%	'
Rate of compensation increase	3.81%	3.73%	'
Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost	'	'	'
Discount rate	4.33%	5.08%	5.40%
Expected long-term rate of return on plan assets	7.62%	7.67%	7.69%
Rate of compensation increase	3.73%	3.68%	3.56%
Other Postretirement Benefit Plans [Member]	'	'	'
Weighted Average Assumptions Used to Determine Benefit Obligation	'	'	'
Discount rate	4.88%	4.19%	'
Rate of compensation increase	0.00%	0.00%	'
Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost	'	'	'
Discount rate	4.19%	4.97%	5.22%
Expected long-term rate of return on plan assets	0.00%	0.00%	0.00%
Rate of compensation increase	0.00%	0.00%	0.00%

Employee_Benefit_Plans_Health_

Employee Benefit Plans, Health Care Cost Trend Rate (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Assumed Health Care Cost Trend Rates	'	'
Health care cost trend rate assumed for the next year	7.39%	7.32%
Rate to which the cost trend rate was assumed to decline (the ultimate trend rate)	5.00%	5.00%
Year that the rate reaches the ultimate trend rate	'2020	'2020
Effect of One Percentage-Point Change in Assumed Health Care Cost Trend Rates	'	'
Effect on total of service and interest cost components, increase	$0	'
Effect on total of service and interest cost components, decrease	0	'
Effect on accumulated postretirement benefit obligation, increase	3	'
Effect on accumulated postretirement benefit obligation, decrease	($3)	'

Employee_Benefit_Plans_Fair_Va

Employee Benefit Plans, Fair Value of Assets Qualified Plans (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

In Millions, unless otherwise specified

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Other US Companies [Member]

Other US Companies [Member]

Other US Companies [Member]

Other US Companies [Member]

Other US Companies [Member]

Other US Companies [Member]

Other US Companies [Member]

Other US Companies [Member]

International Companies [Member]

International Companies [Member]

International Companies [Member]

International Companies [Member]

International Companies [Member]

International Companies [Member]

International Companies [Member]

International Companies [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

International Growth [Member]

International Growth [Member]

International Growth [Member]

International Growth [Member]

International Growth [Member]

International Growth [Member]

International Growth [Member]

International Growth [Member]

Index Funds [Member]

Index Funds [Member]

Index Funds [Member]

Index Funds [Member]

Index Funds [Member]

Index Funds [Member]

Index Funds [Member]

Index Funds [Member]

Corporate Debt Instruments [Member]

Corporate Debt Instruments [Member]

Corporate Debt Instruments [Member]

Corporate Debt Instruments [Member]

Corporate Debt Instruments [Member]

Corporate Debt Instruments [Member]

Corporate Debt Instruments [Member]

Corporate Debt Instruments [Member]

US Treasury Securities [Member]

US Treasury Securities [Member]

US Treasury Securities [Member]

US Treasury Securities [Member]

US Treasury Securities [Member]

US Treasury Securities [Member]

US Treasury Securities [Member]

US Treasury Securities [Member]

Other Government Securities [Member]

Other Government Securities [Member]

Other Government Securities [Member]

Other Government Securities [Member]

Other Government Securities [Member]

Other Government Securities [Member]

Other Government Securities [Member]

Other Government Securities [Member]

Common Collective Trusts [Member]

Common Collective Trusts [Member]

Common Collective Trusts [Member]

Common Collective Trusts [Member]

Common Collective Trusts [Member]

Common Collective Trusts [Member]

Common Collective Trusts [Member]

Common Collective Trusts [Member]

Private Fund [Member]

Private Fund [Member]

Private Fund [Member]

Private Fund [Member]

Insurance Contracts [Member]

Insurance Contracts [Member]

Insurance Contracts [Member]

Insurance Contracts [Member]

Insurance Contracts [Member]

Insurance Contracts [Member]

Insurance Contracts [Member]

Insurance Contracts [Member]

Interest and Dividends Receivable [Member]

Interest and Dividends Receivable [Member]

Interest and Dividends Receivable [Member]

Interest and Dividends Receivable [Member]

Interest and Dividends Receivable [Member]

Interest and Dividends Receivable [Member]

Interest and Dividends Receivable [Member]

Interest and Dividends Receivable [Member]

Cash and Cash Equivalents [Member]

Cash and Cash Equivalents [Member]

Cash and Cash Equivalents [Member]

Cash and Cash Equivalents [Member]

Cash and Cash Equivalents [Member]

Cash and Cash Equivalents [Member]

Cash and Cash Equivalents [Member]

Cash and Cash Equivalents [Member]

Equity Securities [Member]

Debt Securities [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Values of Qualified Pension Plan Assets

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Fair value of qualified pension plan assets

$1,909

$1,729

$1,136

$1,035

$773

$694

$0

$0

$529

[1]

$441

[1]

$529

[1]

$441

[1]

$0

[1]

$0

[1]

$0

[1]

$0

[1]

$155

$135

$155

$135

$0

$0

$0

$0

$3

$3

$3

$2

$0

$1

$0

$0

$131

$127

$131

$127

$0

$0

$0

$0

$160

[2]

$117

[2]

$160

[2]

$117

[2]

$0

[2]

$0

[2]

$0

[2]

$0

[2]

$260

$290

$0

$0

$260

$290

$0

$0

$81

$107

$81

$107

$0

$0

$0

$0

$79

$68

$0

$3

$79

$65

$0

$0

$373

$294

$0

$0

$373

$294

$0

$0

$38

$0

$38

$0

$17

$17

$0

$0

$17

$17

$0

$0

$5

$5

$5

$5

$0

$0

$0

$0

$78

$125

$72

$98

$6

$27

$0

$0

'

'

Employee Benefit Plans (Textual)

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Defined benefit plan, actual plan asset allocations

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60.00%

40.00%

Percentage of equity securities in target allocations for plan assets

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70.00%

30.00%

[1]

Equity securities are held in a wide range of industrial sectors, including consumer goods, information technology, healthcare, industrials, and financial services.

[2]

This class includes primarily investments in approximately 60 percent equities and 40 percent bonds.

StockBased_Compensation_Detail

Stock-Based Compensation (Details) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock-based Compensation Arrangements Activity	'	'	'
Stock-based compensation expense	$64	$58	$58
Tax benefit recognized on stock-based compensation expense	22	20	20
Tax benefit realized for tax deductions resulting from exercises and vestings	66	45	35
Effect of tax deductions in excess of recognized stock-based compensation expense reported as a financing cash flow	47	27	23
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding Rollforward	'	'	'
Stock options outstanding as of beginning of year	13,214,728	'	'
Number of stock options, granted	201,300	'	'
Number of stock options, exercised	-3,837,090	'	'
Number of stock options, expired	-1,780,113	'	'
Options granted on conversion related to separation of retail business	759,268	'	'
Stock options outstanding as of end of year	8,558,093	13,214,728	'
Number of stock options, exercisable as of December 31, 2013	8,037,807	'	'
Weighted-average exercise price per share outstanding, beginning balance	$28.54	'	'
Weighted-average exercise price per share, granted	$39.67	'	'
Weighted-average exercise price per share, exercised	$15.21	'	'
Weighted-average exercise price per share, expired	$49.45	'	'
Weighted-average exercise price per share, options granted on conversion related to separation of retail business	$28.84	'	'
Weighted-average exercise price per share outstanding, ending balance	$27.88	$28.54	'
Weighted-average exercise price per share, exercisable as of December 31, 2013	$27.66	'	'
Weighted-average remaining contractual term, outstanding as of December 31, 2013	'3 years 5 months 25 days	'	'
Weighted-average remaining contractual term, exercisable as of December 31, 2013	'3 years 1 month 14 days	'	'
Aggregate intrinsic value, outstanding as of December 31, 2013	216	'	'
Aggregate intrinsic value, exercisable as of December 31, 2013	206	'	'
Employee Stock Option [Member]	'	'	'
Summary of Weighted-Average Assumptions Used in Fair Value Measurements	'	'	'
Expected life in years	'6 years	'6 years	'6 years
Expected volatility	49.63%	49.11%	49.30%
Expected dividend yield	2.27%	2.39%	2.28%
Risk-free interest rate	1.77%	0.85%	1.44%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding Rollforward	'	'	'
Weighted average grant date fair value of stock option	$15.83	$10.98	$10.10
Intrinsic value of stock options exercised	101	78	63
Cash received from exercise of stock options	59	59	49
Stock Based Compensation (Textual)	'	'	'
Vesting period of stock-based payment awards granted	'3 years	'	'
Unrecognized share-based compensation cost related to outstanding unvested awards	1	'	'
Weighted-average period of recognition for unrecognized compensation costs on nonvested awards	'2 years	'	'
Employee Stock Option [Member] | Minimum [Member]	'	'	'
Stock Based Compensation (Textual)	'	'	'
Stock option award expiration period	'7 years	'	'
Employee Stock Option [Member] | Maximum [Member]	'	'	'
Stock Based Compensation (Textual)	'	'	'
Stock option award expiration period	'10 years	'	'
Restricted Stock Awards - Nonemployee [Member]	'	'	'
Stock Based Compensation (Textual)	'	'	'
Vesting period of stock-based payment awards granted	'3 years	'	'
Restricted Stock [Member]	'	'	'
Nonvested Shares or Awards Other Than Options Rollforward	'	'	'
Nonvested shares or awards, beginning balance	2,920,288	'	'
Shares or awards, granted	1,255,742	'	'
Awards, vested	-2,113,647	'	'
Shares or awards, forfeited	-31,546	'	'
Shares granted on conversion related to separation of retail business	174,477	'	'
Nonvested shares or awards, ending balance	2,205,314	2,920,288	'
Nonvested Awards Other Than Options Weighted Average Grant Date Fair Value Rollforward	'	'	'
Weighted average grant date fair value, beginning balance	$24.76	'	'
Weighted average grant date fair value, granted	$39.55	'	'
Weighted average grant date fair value, vested	$23.73	'	'
Weighted average grant date fair value, forfeited	$23.73	'	'
Weighted-average grant date fair value, shares granted on conversion related to separation of retail business	$23.42	'	'
Weighted average grant date fair value, ending balance	$32.23	$24.76	'
Stock Based Compensation (Textual)	'	'	'
Unrecognized share-based compensation cost related to outstanding unvested awards	40	'	'
Weighted-average period of recognition for unrecognized compensation costs on nonvested awards	'2 years	'	'
Total fair value of restricted stock vested	74	47	32
Restricted Stock [Member] | Minimum [Member]	'	'	'
Stock Based Compensation (Textual)	'	'	'
Vesting period of stock-based payment awards granted	'3 years	'	'
Restricted Stock [Member] | Maximum [Member]	'	'	'
Stock Based Compensation (Textual)	'	'	'
Vesting period of stock-based payment awards granted	'5 years	'	'
Performance Awards [Member]	'	'	'
Nonvested Shares or Awards Other Than Options Rollforward	'	'	'
Nonvested shares or awards, beginning balance	989,414	'	'
Shares or awards, granted	415,317	'	'
Awards, vested	-442,274	'	'
Shares or awards, forfeited	-50,076	'	'
Shares granted on conversion related to separation of retail business	34,784	'	'
Nonvested shares or awards, ending balance	947,165	989,414	'
Vested Awards Other Than Options Rollforward	'	'	'
Vested awards, beginning balance	208,916	'	'
Awards, vested	442,274	'	'
Awards, converted	-534,515	'	'
Awards, forfeited	116,675	'	'
Vested awards, ending balance	0	208,916	'
Performance Awards Converted [Abstract]	'	'	'
Vested awards converted	651,190	'	'
Converted shares issued	534,515	'	'
Stock Based Compensation (Textual)	'	'	'
Vesting period of stock-based payment awards granted	'1 year	'	'
Unrecognized share-based compensation cost related to outstanding unvested awards	16	'	'
Total fair value of restricted stock vested	$12	$3	$4
Performance award vesting rights	33.33%	'	'
Number of vesting tranches under performance awards granted	3	'	'
Performance Awards [Member] | Award Year 2010 [Member]	'	'	'
Vested Awards Other Than Options Rollforward	'	'	'
Awards, forfeited	0	'	'
Performance Awards Converted [Abstract]	'	'	'
Vested awards converted	417,833	'	'
Actual conversion rate of common shares	100.00%	'	'
Converted shares issued	417,833	'	'
Performance Awards [Member] | Award Year 2011 [Member]	'	'	'
Vested Awards Other Than Options Rollforward	'	'	'
Awards, forfeited	116,675	'	'
Performance Awards Converted [Abstract]	'	'	'
Vested awards converted	233,357	'	'
Actual conversion rate of common shares	50.00%	'	'
Converted shares issued	116,682	'	'
Performance Awards [Member] | Vesting Tranche - Three [Member] | Award Year 2011 [Member]	'	'	'
Nonvested Shares or Awards Other Than Options Rollforward	'	'	'
Shares or awards, granted	227,565	'	'
Nonvested Awards Other Than Options Weighted Average Grant Date Fair Value Rollforward	'	'	'
Weighted average grant date fair value, granted	$38.77	'	'
Expected conversion rate of common stock shares	1	'	'
Performance Awards [Member] | Vesting Tranche - Two [Member] | Award Year 2012 [Member]	'	'	'
Nonvested Shares or Awards Other Than Options Rollforward	'	'	'
Shares or awards, granted	105,030	'	'
Nonvested Awards Other Than Options Weighted Average Grant Date Fair Value Rollforward	'	'	'
Weighted average grant date fair value, granted	$38.77	'	'
Expected conversion rate of common stock shares	1	'	'
Performance Awards [Member] | Vesting Tranche - One [Member] | Award Year 2013 [Member]	'	'	'
Nonvested Shares or Awards Other Than Options Rollforward	'	'	'
Shares or awards, granted	82,722	'	'
Nonvested Awards Other Than Options Weighted Average Grant Date Fair Value Rollforward	'	'	'
Weighted average grant date fair value, granted	$38.77	'	'
Expected conversion rate of common stock shares	1	'	'
Performance Awards [Member] | Minimum [Member]	'	'	'
Stock Based Compensation (Textual)	'	'	'
Performance awards range of conversion rates	0.00%	'	'
Performance Awards [Member] | Maximum [Member]	'	'	'
Stock Based Compensation (Textual)	'	'	'
Performance awards range of conversion rates	200.00%	'	'
Omnibus Stock Incentive Plan [Member] | Stock Compensation Plan [Member]	'	'	'
Stock Based Compensation (Textual)	'	'	'
Number of shares of common stock available to be awarded under stock-based compensation plans	15,340,981	'	'
Formerly Maintained Plans [Member] | Stock Compensation Plan [Member]	'	'	'
Stock Based Compensation (Textual)	'	'	'
Number of shares of common stock available to be awarded under stock-based compensation plans	0	'	'

Income_Taxes_Details

Income Taxes (Details) (USD $)

12 Months Ended

12 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Sep. 30, 2012

Mar. 31, 2012

Dec. 31, 2012

Tax Years 2005 to 2012 [Member]

Tax Years 2005 to 2012 [Member]

Consolidated Statement Of Income [Member]

Additional Paid-in Capital [Member]

State and Local Jurisdiction [Member]

State and Local Jurisdiction [Member]

State and Local Jurisdiction [Member]

State and Local Jurisdiction [Member]

State and Local Jurisdiction [Member]

State and Local Jurisdiction [Member]

Foreign Tax Authority [Member]

Aruba Refinery [Member]

Aruba Refinery [Member]

Aruba Refinery [Member]

Minimum [Member]

Maximum [Member]

U S State Income Tax Credits Limited [Member]

U S State Income Tax Credits Limited [Member]

U S State Income Tax Credits Limited [Member]

Minimum [Member]

Maximum [Member]

Income from Continuing Operations Before Income Tax Expense from Domestic and Foreign Operations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

U.S. operations

$3,531,000,000

$4,015,000,000

$3,190,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

International operations

451,000,000

-309,000,000

132,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income from continuing operations before income tax expense

3,982,000,000

3,706,000,000

3,322,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reconciliation of Income Tax Expense Related to Income from Continuing Operations Before Income Tax Expense

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Federal income tax expense at the U.S. federal statutory rate

1,394,000,000

1,297,000,000

1,163,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

U.S. state income tax expense, net of U.S. federal income tax effect

62,000,000

64,000,000

29,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

U.S. manufacturing deduction

-36,000,000

-33,000,000

-28,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

International operations

-71,000,000

266,000,000

46,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Permanent differences

-104,000,000

20,000,000

8,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Change in tax law

-32,000,000

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other, net

41,000,000

12,000,000

8,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income tax expense

1,254,000,000

1,626,000,000

1,226,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

U.S. federal

635,000,000

515,000,000

562,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

U.S. state

36,000,000

22,000,000

13,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

International

82,000,000

126,000,000

186,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total current

753,000,000

663,000,000

761,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

U.S. federal

459,000,000

854,000,000

527,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

U.S. state

59,000,000

77,000,000

32,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

International

-17,000,000

32,000,000

-94,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total deferred

501,000,000

963,000,000

465,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income tax expense

1,254,000,000

1,626,000,000

1,226,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred income tax assets:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Tax credit carryforwards

48,000,000

61,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net operating losses (NOLs)

338,000,000

247,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Inventories

264,000,000

258,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property, plant, and equipment

8,000,000

78,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Compensation and employee benefit liabilities

178,000,000

383,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Environmental liabilities

92,000,000

83,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other

187,000,000

157,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total deferred income tax assets

1,115,000,000

1,267,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Less: Valuation allowance

-347,000,000

-304,000,000

'

'

'

-340,000,000

-7,000,000

'

'

'

'

'

'

'

'

'

'

Net deferred income tax assets

768,000,000

963,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred income tax liabilities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property, plant, and equipment

6,536,000,000

6,143,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred turnaround costs

331,000,000

300,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Inventories

310,000,000

381,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Investments, primarily in VLP and DGD

94,000,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other

81,000,000

103,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total deferred income tax liabilities

7,352,000,000

6,927,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net deferred income tax liabilities

6,584,000,000

5,964,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income Tax Credit and Loss Carryforwards

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

U.S. state income tax credits

'

'

'

'

'

'

'

'

'

'

71,000,000

'

'

'

'

'

'

NOL

'

'

'

'

'

'

'

5,609,000,000

'

'

'

'

'

1,289,000,000

'

'

'

Income tax credits, expiration

'

'

'

'

'

'

'

'

'

'

'

31-Dec-14

31-Dec-27

'

'

'

'

NOL, expiration

'

'

'

'

'

'

'

'

31-Dec-14

31-Dec-33

'

'

'

'

'

'

'

Valuation Allowance Allocation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred tax assets valuation allowance

347,000,000

304,000,000

'

'

'

340,000,000

7,000,000

'

'

'

'

'

'

'

'

'

'

Reconciliation of the Change in Unrecognized Tax Benefits RollForward

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance as of beginning of year

341,000,000

326,000,000

330,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additions based on tax positions related to the current year

64,000,000

11,000,000

14,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additions for tax positions related to prior years

576,000,000

40,000,000

55,000,000

556,000,000

0

'

'

'

'

'

'

'

'

'

'

'

'

Reductions for tax positions related to prior years

-26,000,000

-36,000,000

-66,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reductions for tax positions related to the lapse of applicable statute of limitations

-4,000,000

0

-3,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Settlements

-1,000,000

0

-4,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance as of end of year

950,000,000

341,000,000

326,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reconciliation of Unrecognized Tax Benefits to Uncertain Tax Position Liabilities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrecognized tax benefits

950,000,000

341,000,000

326,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Tax refund claim not recognized in our financial statements

-576,000,000

-40,000,000

-55,000,000

-556,000,000

0

'

'

'

'

'

'

'

'

'

'

'

'

Penalties, interest (net of U.S. federal and state income tax effect), and the U.S. federal income tax effect of state unrecognized tax benefits

49,000,000

50,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Uncertain tax position liabilities

443,000,000

391,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income Taxes (Textual)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Statutory federal income tax rate

35.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain on disposition of retained interest in CST Brands, Inc.

325,000,000

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Asset impairment losses

0

1,014,000,000

0

'

'

'

'

'

'

'

'

'

'

'

333,000,000

595,000,000

928,000,000

Income tax benefit related to discontinued operations

0

0

4,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Increase in valuation allowance

43,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cumulative undistributed earnings of foreign subsidiaries

3,500,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additions for tax positions related to prior years

576,000,000

40,000,000

55,000,000

556,000,000

0

'

'

'

'

'

'

'

'

'

'

'

'

Income tax benefits if recognized that would impact the effective tax rate

763,000,000

144,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Possible reduction to unrecognized tax benefit, lower range

100,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Possible reduction to unrecognized tax benefit, upper range

180,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expense and penalties recognized

12,000,000

23,000,000

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expense and penalties accrued

$145,000,000

$133,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Earnings_Per_Common_Share_Deta

Earnings Per Common Share (Details) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings per common share from continuing operations:	'	'	'
Net income attributable to Valero stockholders from continuing operations	$2,720	$2,083	$2,097
Less dividends paid:	'	'	'
Weighted-average common shares outstanding	542	550	563
Earnings per common share from continuing operations:	'	'	'
Total earnings per common share from continuing operations	$4.99	$3.77	$3.70
Earnings per common share from continuing operations – assuming dilution:	'	'	'
Net income attributable to Valero stockholders from continuing operations	2,720	2,083	2,097
Weighted-average common shares outstanding	542	550	563
Common equivalent shares:	'	'	'
Weighted-average common shares outstanding – assuming dilution	548	556	569
Earnings per common share from continuing operations – assuming dilution	$4.97	$3.75	$3.69
Common Stock [Member]	'	'	'
Earnings per common share from continuing operations:	'	'	'
Net income attributable to Valero stockholders from continuing operations	2,720	2,083	2,097
Less dividends paid:	'	'	'
Common stock	460	358	168
Nonvested restricted stock	2	2	1
Undistributed earnings	2,258	1,723	1,928
Weighted-average common shares outstanding	542	550	563
Earnings per common share from continuing operations:	'	'	'
Distributed earnings (in USD per share)	$0.85	$0.65	$0.30
Undistributed earnings	$4.14	$3.12	$3.40
Total earnings per common share from continuing operations	$4.99	$3.77	$3.70
Earnings per common share from continuing operations – assuming dilution:	'	'	'
Net income attributable to Valero stockholders from continuing operations	$2,720	$2,083	$2,097
Weighted-average common shares outstanding	542	550	563
Common equivalent shares:	'	'	'
Stock options	4	4	4
Performance awards and nonvested restricted stock	2	2	2
Weighted-average common shares outstanding – assuming dilution	548	556	569
Earnings per common share from continuing operations – assuming dilution	$4.97	$3.75	$3.69
Restricted Stock [Member]	'	'	'
Less dividends paid:	'	'	'
Weighted-average common shares outstanding	3	3	3
Earnings per common share from continuing operations:	'	'	'
Distributed earnings (in USD per share)	$0.85	$0.65	$0.30
Undistributed earnings	$4.14	$3.12	$3.40
Total earnings per common share from continuing operations	$4.99	$3.77	$3.70
Earnings per common share from continuing operations – assuming dilution:	'	'	'
Weighted-average common shares outstanding	3	3	3

Earnings_Per_Common_Share_Pote

Earnings Per Common Share, Potentially Dilutive Securities (Details) (Employee Stock Option [Member])	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Stock Option [Member]	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Amount of potentially dilutive securities excluded from computation of earnings per common share	1	4	6

Segment_Information_Details

Segment Information (Details) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

segments

Segment information for our three reportable segments

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

$34,429

$36,137

$34,034

[1]

$33,474

$34,695

$34,726

$34,662

$35,167

[1],[2]

$138,074

$139,250

$125,987

Depreciation and amortization expense

'

'

'

'

'

'

'

'

1,720

1,574

1,534

Operating income (loss)

1,562

532

808

[1]

1,061

1,584

1,309

1,361

-244

[1],[2]

3,963

4,010

3,680

Total expenditures for long-lived assets

'

'

'

'

'

'

'

'

2,757

3,413

2,987

Segment Information (Textual)

'

'

'

'

'

'

'

'

'

'

'

Number of reportable segments

'

'

'

'

'

'

'

'

2

'

'

Refining [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment information for our three reportable segments

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

129,064

122,925

109,138

Retail [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment information for our three reportable segments

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

3,896

12,008

11,699

Ethanol [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment information for our three reportable segments

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

5,114

4,317

5,150

Corporate, Non-Segment [Member] | Corporate and Other [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment information for our three reportable segments

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

0

0

0

Depreciation and amortization expense

'

'

'

'

'

'

'

'

68

43

42

Operating income (loss)

'

'

'

'

'

'

'

'

-826

-741

-613

Total expenditures for long-lived assets

'

'

'

'

'

'

'

'

65

66

113

Operating Segments [Member] | Refining [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment information for our three reportable segments

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

129,064

122,925

109,138

Depreciation and amortization expense

'

'

'

'

'

'

'

'

1,566

1,370

1,338

Operating income (loss)

'

'

'

'

'

'

'

'

4,217

4,450

3,516

Total expenditures for long-lived assets

'

'

'

'

'

'

'

'

2,597

3,147

2,708

Operating Segments [Member] | Retail [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment information for our three reportable segments

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

3,896

12,008

11,699

Depreciation and amortization expense

'

'

'

'

'

'

'

'

41

119

115

Operating income (loss)

'

'

'

'

'

'

'

'

81

348

381

Total expenditures for long-lived assets

'

'

'

'

'

'

'

'

62

164

134

Operating Segments [Member] | Ethanol [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment information for our three reportable segments

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

5,114

4,317

5,150

Depreciation and amortization expense

'

'

'

'

'

'

'

'

45

42

39

Operating income (loss)

'

'

'

'

'

'

'

'

491

-47

396

Total expenditures for long-lived assets

'

'

'

'

'

'

'

'

33

36

32

Intersegment Eliminations [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment information for our three reportable segments

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

3,004

9,061

8,810

Intersegment Eliminations [Member] | Refining [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment information for our three reportable segments

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

2,876

8,946

8,665

Intersegment Eliminations [Member] | Retail [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment information for our three reportable segments

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

0

0

0

Intersegment Eliminations [Member] | Ethanol [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment information for our three reportable segments

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

$128

$115

$145

[1]

The separation of our retail business was completed on May 1, 2013.

[2]

The operations of the Aruba Refinery were suspended in March 2012.

Segment_Information_Revenue_by

Segment Information, Revenue by Product (Details) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

$34,429

$36,137

$34,034

[1]

$33,474

$34,695

$34,726

$34,662

$35,167

[1],[2]

$138,074

$139,250

$125,987

Refining [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

129,064

122,925

109,138

Refining [Member] | Gasoline and Blendstocks [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

57,806

55,647

49,019

Refining [Member] | Distillates [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

56,921

51,504

43,713

Refining [Member] | Petrochemicals [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

4,281

3,908

4,253

Refining [Member] | Lubes and Asphalts [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

1,643

2,033

1,948

Refining [Member] | Other Product Revenues [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

8,413

9,833

10,205

Retail [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

3,896

12,008

11,699

Retail [Member] | Fuel Sales Gasoline and Diesel [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

3,226

10,045

9,730

Retail [Member] | Merchandise Sales and Other [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

524

1,649

1,635

Retail [Member] | Heating Oil [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

146

314

334

Ethanol [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

5,114

4,317

5,150

Ethanol [Member] | Ethanol Product [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

4,245

3,545

4,436

Ethanol [Member] | Distillers Grains [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

$869

$772

$714

[1]

The separation of our retail business was completed on May 1, 2013.

[2]

The operations of the Aruba Refinery were suspended in March 2012.

Segment_Information_Geographic

Segment Information, Geographic Information by Country for Revenue and Long-Lived Assets (Details) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Operating revenues by geographic area

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

$34,429

$36,137

$34,034

[1]

$33,474

$34,695

$34,726

$34,662

$35,167

[1],[2]

$138,074

$139,250

$125,987

Geographic information by country for long-lived assets

'

'

'

'

'

'

'

'

'

'

'

Long-lived assets

27,059

'

'

'

27,587

'

'

'

27,059

27,587

'

U.S. [Member]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues by geographic area

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

100,418

100,733

98,806

Geographic information by country for long-lived assets

'

'

'

'

'

'

'

'

'

'

'

Long-lived assets

23,572

'

'

'

23,760

'

'

'

23,572

23,760

'

Canada [Member]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues by geographic area

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

9,974

10,376

10,110

Geographic information by country for long-lived assets

'

'

'

'

'

'

'

'

'

'

'

Long-lived assets

2,260

'

'

'

2,639

'

'

'

2,260

2,639

'

U.K. [Member]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues by geographic area

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

11,358

10,779

4,297

Geographic information by country for long-lived assets

'

'

'

'

'

'

'

'

'

'

'

Long-lived assets

1,148

'

'

'

1,110

'

'

'

1,148

1,110

'

Other countries [Member]

'

'

'

'

'

'

'

'

'

'

'

Operating revenues by geographic area

'

'

'

'

'

'

'

'

'

'

'

Operating revenues

'

'

'

'

'

'

'

'

16,324

17,362

12,774

Aruba [Member]

'

'

'

'

'

'

'

'

'

'

'

Geographic information by country for long-lived assets

'

'

'

'

'

'

'

'

'

'

'

Long-lived assets

53

'

'

'

41

'

'

'

53

41

'

Ireland [Member]

'

'

'

'

'

'

'

'

'

'

'

Geographic information by country for long-lived assets

'

'

'

'

'

'

'

'

'

'

'

Long-lived assets

$26

'

'

'

$37

'

'

'

$26

$37

'

[1]

The separation of our retail business was completed on May 1, 2013.

[2]

The operations of the Aruba Refinery were suspended in March 2012.

Segment_Information_Total_Asse

Segment Information, Total Assets by Reportable Segments (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Total assets by reportable segments	'	'
Reportable segment assets	$47,260	$44,477
Refining [Member]	'	'
Total assets by reportable segments	'	'
Reportable segment assets	40,834	38,858
Retail [Member]	'	'
Total assets by reportable segments	'	'
Reportable segment assets	0	2,043
Ethanol [Member]	'	'
Total assets by reportable segments	'	'
Reportable segment assets	889	929
Corporate and Other [Member]	'	'
Total assets by reportable segments	'	'
Reportable segment assets	$5,537	$2,647

Supplemental_Cash_Flow_Informa2

Supplemental Cash Flow Information (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Decrease (increase) in current assets:	'	'	'
Receivables, net	($753)	$437	($3,110)
Inventories	-13	-282	643
Income taxes receivable	10	51	128
Prepaid expenses and other	2	-28	-2
Increase (decrease) in current liabilities:	'	'	'
Accounts payable	977	-113	2,004
Accrued expenses	53	13	-18
Taxes other than income taxes	337	-260	312
Income taxes payable	309	-120	124
Changes in current assets and current liabilities	922	-302	81
Cash Flows Related to Interest and Income Taxes	'	'	'
Interest paid in excess of amount capitalized	361	302	397
Income taxes paid, net	$387	$705	$486

Fair_Value_Measurements_Recurr

Fair Value Measurements, Recurring (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Assets:	'	'
Investments of certain benefit plans	$1,909	$1,729
Fair Value, Measurements, Recurring [Member]	'	'
Assets:	'	'
Commodity derivative contracts	537	1,203
Foreign currency contracts	'	1
Investments of certain benefit plans	109	98
Total gross fair value, assets	646	1,313
Commodity derivative contracts, net assets	25	14
Net Carrying Value on Balance Sheet, Assets	134	124
Cash Collateral Received Not Offset	0	0
Liabilities:	'	'
Commodity derivative contracts	516	1,208
Biofuels blending obligation	11	10
Foreign currency contracts	8	1
Total gross fair value, liabilities	540	1,219
Commodity derivative contracts, net liabilities	5	6
Net Carrying Value on Balance Sheet, Liabilities	29	17
Cash Collateral Paid Not Offset	-76	-114
Fair Value, Measurements, Recurring [Member] | Physical Purchase Contracts [Member]	'	'
Assets:	'	'
Physical purchase contracts	'	11
Liabilities:	'	'
Physical purchase contracts	5	'
Fair Value, Inputs, Level 1 [Member]	'	'
Assets:	'	'
Investments of certain benefit plans	1,136	1,035
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Assets:	'	'
Commodity derivative contracts	499	1,143
Foreign currency contracts	'	1
Investments of certain benefit plans	98	87
Total gross fair value, assets	597	1,231
Liabilities:	'	'
Commodity derivative contracts	492	1,138
Biofuels blending obligation	0	0
Foreign currency contracts	8	1
Total gross fair value, liabilities	500	1,139
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Physical Purchase Contracts [Member]	'	'
Assets:	'	'
Physical purchase contracts	'	0
Liabilities:	'	'
Physical purchase contracts	0	'
Fair Value, Inputs, Level 2 [Member]	'	'
Assets:	'	'
Investments of certain benefit plans	773	694
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Assets:	'	'
Commodity derivative contracts	38	60
Foreign currency contracts	'	0
Investments of certain benefit plans	0	0
Total gross fair value, assets	38	71
Liabilities:	'	'
Commodity derivative contracts	24	70
Biofuels blending obligation	11	10
Foreign currency contracts	0	0
Total gross fair value, liabilities	40	80
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Physical Purchase Contracts [Member]	'	'
Assets:	'	'
Physical purchase contracts	'	11
Liabilities:	'	'
Physical purchase contracts	5	'
Fair Value, Inputs, Level 3 [Member]	'	'
Assets:	'	'
Investments of certain benefit plans	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Assets:	'	'
Commodity derivative contracts	0	0
Foreign currency contracts	'	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] | Fair Value, Measurements, Recurring [Member] | Physical Purchase Contracts [Member]	'	'
Assets:	'	'
Physical purchase contracts	'	0
Liabilities:	'	'
Physical purchase contracts	0	'
Netting [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Assets:	'	'
Effect of Counterparty Netting	-505	-1,189
Effect of Cash Collateral Netting	-7	0
Liabilities:	'	'
Effect of Counterparty Netting	-505	-1,189
Effect of Cash Collateral Netting	($6)	($13)

Fair_Value_Measurements_Level_

Fair Value Measurements, Level 3 Reconciliation (Details) (Fair Value, Measurements, Recurring [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Investments of Certain Benefit Plans [Member]	'	'	'
Reconciliation of Beginning and Ending Balances for Fair Value Measurements Developed Using Significant Unobservable Inputs	'	'	'
Balance as of beginning of year	$11	$11	$10
Purchases	0	0	1
Transfers in and/or out of Level 3	0	0	0
Balance as of end of year	11	11	11
Investments of Certain Benefit Plans [Member] | Operating Expense [Member] | Refining [Member]	'	'	'
Reconciliation of Beginning and Ending Balances for Fair Value Measurements Developed Using Significant Unobservable Inputs	'	'	'
Total losses included in refining operating expense	0	0	0
Investments of Certain Benefit Plans [Member] | Other Income [Member]	'	'	'
Reconciliation of Beginning and Ending Balances for Fair Value Measurements Developed Using Significant Unobservable Inputs	'	'	'
The amount of total losses included in income attributable to the change in unrealized losses relating to assets still held at end of year	0	0	0
Other Investments [Member]	'	'	'
Reconciliation of Beginning and Ending Balances for Fair Value Measurements Developed Using Significant Unobservable Inputs	'	'	'
Balance as of beginning of year	0	0	0
Purchases	0	0	21
Transfers in and/or out of Level 3	0	0	0
Balance as of end of year	0	0	0
Other Investments [Member] | Operating Expense [Member] | Refining [Member]	'	'	'
Reconciliation of Beginning and Ending Balances for Fair Value Measurements Developed Using Significant Unobservable Inputs	'	'	'
Total losses included in refining operating expense	0	0	-21
Other Investments [Member] | Other Income [Member]	'	'	'
Reconciliation of Beginning and Ending Balances for Fair Value Measurements Developed Using Significant Unobservable Inputs	'	'	'
The amount of total losses included in income attributable to the change in unrealized losses relating to assets still held at end of year	$0	$0	($21)

Fair_Value_Measurements_Nonrec

Fair Value Measurements, Nonrecurring (Details) (USD $)

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Mar. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Aruba Refinery [Member]

Aruba Refinery [Member]

Aruba Refinery [Member]

Aruba Refinery [Member]

Aruba Refinery [Member]

Aruba Refinery [Member]

Aruba Refinery [Member]

Refining Assets [Member]

Refining Assets [Member]

Inventory Related Assets [Member]

Inventory Related Assets [Member]

Construction in Progress [Member]

Construction in Progress [Member]

Construction in Progress [Member]

Construction in Progress [Member]

Construction in Progress [Member]

Retail Assets [Member]

Retail Assets [Member]

Retail Assets [Member]

Retail Assets [Member]

Retail Assets [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Assets:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-lived assets, fair value

'

'

'

'

'

'

'

'

$0

$0

$0

$0

'

'

'

'

'

$2

$0

$0

$2

'

$8

$0

$0

$8

Materials and supplies inventories

5,758

5,973

'

'

'

'

'

'

0

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Asset impairment losses

0

1,014

0

'

'

333

595

928

'

'

'

'

308

903

25

25

65

'

'

'

'

21

'

'

'

'

Fair Value Measurements (Textual)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Assets measured at fair value, nonrecurring

'

'

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Liabilities measured at fair value, nonrecurring

'

'

'

$0

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair_Value_Measurements_Other_

Fair Value Measurements, Other Financial Instruments (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Millions, unless otherwise specified
Financial assets:	'	'	'	'
Cash and temporary cash investments, at carrying amount	$4,292	$1,723	$1,024	$3,334
Financial liabilities:	'	'	'	'
Debt (excluding capital leases), at carrying amount	6,525	7,000	'	'
Fair Value, Inputs, Level 1 [Member]	'	'	'	'
Financial assets:	'	'	'	'
Cash and temporary cash investments, at fair value	4,292	1,723	'	'
Fair Value, Inputs, Level 2 [Member]	'	'	'	'
Financial liabilities:	'	'	'	'
Debt (excluding capital leases), at fair value	$7,659	$8,621	'	'

Price_Risk_Management_Activiti2

Price Risk Management Activities (Details) (USD $)

12 Months Ended

1 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Jan. 31, 2014

Biofuels Blending [Member]

Biofuels Blending [Member]

Biofuels Blending [Member]

Minimum Inventory [Member]

Minimum Inventory [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]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [Member]

Trading Derivatives [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]

Foreign Currency Contract [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]

Short (Sales) [Member]

Short (Sales) [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 Year Two [Member]

Maturity Current Year [Member]

Maturity Current Year [Member]

Maturity Year Two [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 bushels) [Member]

Crude Oil (In thousands of barrels) [Member]

Grain (In bushels) [Member]

Crude Oil (In thousands of barrels) [Member]

Grain (In bushels) [Member]

Soybean Oil (in thousands of pounds) [Member]

Crude Oil (In thousands of barrels) [Member]

Grain (In bushels) [Member]

Soybean Oil (in thousands of pounds) [Member]

Grain (In bushels) [Member]

Grain (In 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 bushels) [Member]

Natural Gas (In millions of btus) [Member]

Crude Oil (In thousands of barrels) [Member]

Grain (In bushels) [Member]

Natural Gas (In millions of btus) [Member]

Crude Oil (In thousands of barrels) [Member]

Grain (In bushels) [Member]

Natural Gas (In millions of btus) [Member]

Crude Oil (In thousands of barrels) [Member]

Grain (In bushels) [Member]

Natural Gas (In millions 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]

Crude Oil (In thousands of barrels) [Member]

Crude Oil (In thousands of barrels) [Member]

Natural Gas (In millions of btus) [Member]

Crude Oil (In thousands of barrels) [Member]

Natural Gas (In millions of btus) [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

MBbls

MBbls

MMBTU

MBbls

MMBTU

Volume of Outstanding Contracts

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Nonmonetary notional amount of price risk derivatives

'

'

'

'

'

'

11,857

12,169

312

7,629

2,314

5,315

42,205

17,110,000

0

0

52,158

26,095,000

25,320,000

0

145,000

0

12,554,000

156,000

7,261

0

7,276

0

84,766

435,000

600,000

3,490

0

1,000,000

84,397

435,000

1,150,000

3,665

0

0

25,200

0

25,200

0

28,850

0

28,600

250,000

0

0

'

Monetary notional amount of derivative liabilities

'

'

'

'

'

$716

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Price Risk Management Activities (Textual)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Foreign currency commitments maturity date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

31-Jan-14

Gain (loss) recognized in income on derivatives

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12

Compliance program costs

$517

$250

$231

$3

$8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Price_Risk_Management_Activiti3

Price Risk Management Activities, Hedging Instruments by Consolidated Balance Sheet Location (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Fair Values of Derivative Instruments	'	'
Total derivatives assets, net	$537	$1,215
Total derivative liabilities, net	529	1,209
Designated as Hedging Instrument [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative asset, fair value, gross asset	'	94
Derivative liability, fair value, gross liability	'	79
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	25	77
Derivative asset, fair value, gross liability	36	64
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	'	15
Derivative asset, fair value, gross liability	'	13
Designated as Hedging Instrument [Member] | Swap [Member] | Commodity Contract [Member] | Prepaid Expenses And Other [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative asset, fair value, gross asset	'	2
Derivative asset, fair value, gross liability	'	2
Not Designated as Hedging Instrument [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative asset, fair value, gross asset	512	1,121
Derivative liability, fair value, gross liability	493	1,130
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	474	1,066
Derivative asset, fair value, gross liability	455	1,073
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	33	9
Derivative asset, fair value, gross liability	18	6
Not Designated as Hedging Instrument [Member] | Swap [Member] | Commodity Contract [Member] | Prepaid Expenses And Other [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] | Swap [Member] | Commodity Contract [Member] | Accrued Expenses [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative liability, fair value, gross asset	0	32
Derivative liability, fair value, gross liability	5	46
Not Designated as Hedging Instrument [Member] | Options Held [Member] | Commodity Contract [Member] | Trade Accounts Receivable [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative asset, fair value, gross asset	2	1
Derivative asset, fair value, gross liability	2	4
Not Designated as Hedging Instrument [Member] | Options Held [Member] | Commodity Contract [Member] | Accrued Expenses [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative liability, fair value, gross asset	'	1
Derivative liability, fair value, gross liability	'	0
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member] | Physical Purchase Contracts [Member] | Inventories [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative asset, fair value, gross asset	0	11
Derivative asset, fair value, gross liability	5	0
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member] | Foreign Currency Contract [Member] | Trade Accounts Receivable [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative asset, fair value, gross asset	'	1
Derivative asset, fair value, gross liability	'	0
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member] | Foreign Currency Contract [Member] | Accrued Expenses [Member]	'	'
Fair Values of Derivative Instruments	'	'
Derivative liability, fair value, gross asset	0	0
Derivative liability, fair value, gross liability	$8	$1

Price_Risk_Management_Activiti4

Price Risk Management Activities, Gain (Loss) by Income Statement Location (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Price Risk Management Activities (Textual)	'	'	'
Gain from hedged firm commitment not qualifying as fair value hedge, net	'	$28	'
Accumulated other comprehensive income, cumulative after-tax losses on cash flow hedges	-1	'	'
Loss from cash flow hedges to be reclassified within 12 months	-1	'	'
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	-12	-250	-6
Gain (loss) recognized in income on hedged item	18	183	23
Gain (loss) recognized in income on derivatives (ineffective portion)	6	-67	-29
Cash Flow Hedging [Member] | Commodity Contract [Member]	'	'	'
Effect of Derivative Instruments on Income and OCI	'	'	'
Gain (loss) recognized in OCI on derivatives (effective portion)	-4	45	32
Cash Flow Hedging [Member] | Commodity Contract [Member] | Cost of Sales [Member]	'	'	'
Effect of Derivative Instruments on Income and OCI	'	'	'
Gain (loss) reclassified from accumulated OCI into income (effective portion)	-2	73	3
Gain recognized in income on derivatives (ineffective portion)	21	48	5
Economic Hedging [Member] | Cost of Sales [Member]	'	'	'
Effect of Derivative Instruments on Income and OCI	'	'	'
Gain (loss) recognized in income on derivatives	207	-37	-302
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	193	1	-349
Economic Hedging [Member] | Commodity Contract [Member] | Cost of Sales [Member] | Future [Member]	'	'	'
Effect of Derivative Instruments on Income and OCI	'	'	'
Gain (loss) recognized in income on derivatives	'	'	542
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	14	-38	18
Economic Hedging [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	0	29
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	21	-16	23
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	($20)	$0	$0

Quarterly_Financial_Data_Unaud2

Quarterly Financial Data (Unaudited) (Details) (USD $)	3 Months Ended										12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013		Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Results of operations	'	'	'		'	'	'	'	'		'	'	'
Operating revenues	$34,429	$36,137	$34,034	[1]	$33,474	$34,695	$34,726	$34,662	$35,167	[1],[2]	$138,074	$139,250	$125,987
Operating income (loss)	1,562	532	808	[1]	1,061	1,584	1,309	1,361	-244	[1],[2]	3,963	4,010	3,680
Net income (loss)	1,287	324	465	[1]	652	1,009	673	830	-432	[1],[2]	2,728	2,080	2,089
Net income (loss) attributable to Valero Energy Corporation stockholders	$1,288	$312	$466	[1]	$654	$1,010	$674	$831	($432)	[1],[2]	$2,720	$2,083	$2,090
Earnings (loss) per common share – assuming dilution	$2.38	$0.57	$0.85	[1]	$1.18	$1.82	$1.21	$1.50	($0.78)	[1],[2]	$4.97	$3.75	$3.68
[1]	The separation of our retail business was completed on May 1, 2013.
[2]	The operations of the Aruba Refinery were suspended in March 2012.