XML 37 R57.htm IDEA: XBRL DOCUMENT v2.4.1.9

Deferred Charges and Other Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Deferred Charges and Other Assets (Textual)
Amortization expense, deferred refinery turnaround and catalyst costs and other assets	$ 489us-gaap_OtherAmortizationOfDeferredCharges	$ 498us-gaap_OtherAmortizationOfDeferredCharges	$ 447us-gaap_OtherAmortizationOfDeferredCharges

X

- Definition

Amount of amortization of other deferred costs recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.3)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

Name:	us-gaap_OtherAmortizationOfDeferredCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	vlo_DeferredChargesandOtherAssetsTextualAbstract
Namespace Prefix:	vlo_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration