Inventories (Details) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Inventories Note Details [Abstract]
Liquid hydrocarbons, natural gas and bitumen	$ 135	$ 1,275
Refined products and merchandise	0	1,774
Supplies and sundry items	207	404
Total inventories, at cost	$ 342	$ 3,453

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Carrying amount as of the balance sheet date of crude oil, natural gas liquids, natural gas and bitumen inventories.

+ Details

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- Definition

Carrying amount as of the balance sheet date of sundry items and miscellaneous supplies.

+ Details

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- Definition

Carrying amount as of the balance sheet date of finished goods inventories for petroleum products, crude oil, petrochemical products, and other oil and gas inventories.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Article 5

+ Details

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- Definition

Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer).

+ Details

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