v2.4.0.6

Inventories (Tables)

12 Months Ended

Dec. 31, 2011

Summary of Inventories

Inventories at December 31 were:

		Millions of Dollars
		2011				2010
Crude oil and petroleum products		$	3,633				4,254
Materials, supplies and other			998				943
		$	4,631				5,197

X

- Definition

Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 2

-Paragraph 6

-Subparagraph a,b,c

-Article 5

+ Details

Name:	us-gaap_ScheduleOfInventoryCurrentTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration