Advance to acquired company.

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- Definition

Cash out of equity awards included in Net increase in operating working capital.

+ References

No definition available.

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- Definition

Discount rate on future commodity prices.

+ References

No definition available.

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- Definition

Drilling cost incurred under carry arrangement.

+ References

No definition available.

+ Details

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- Definition

Percentage of funds arranged under carry arrangement.

+ References

No definition available.

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- Definition

Amount of cash paid to acquire the entity.

+ References

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- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

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- Definition

Percentage of voting equity interests acquired in the business combination.

+ References

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

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-Name Accounting Standards Codification

-Topic 805

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- Definition

Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

+ References

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- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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- Definition

The amount of acquisition cost of a business combination allocated to the noncurrent portion of the long-term debt assumed from the acquired entity.

+ References

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- Definition

This element represents the acquisition-date fair value of the total consideration transferred which consists of the sum of the acquisition-date fair values of the assets transferred by the acquirer, the liabilities incurred by the acquirer to former owners of the acquiree, and the equity interests issued by the acquirer.

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Acquisition of Atlas Energy Inc. (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended				0 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Feb. 17, 2011	Feb. 17, 2011 Atlas Energy Inc [Member]	Dec. 31, 2011 Atlas Energy Inc [Member]	Feb. 17, 2011 Laurel Mountain Midstream LLC [Member]	Feb. 17, 2011 Reliance Marcellus LLC [Member]	Feb. 17, 2011 Upstream Segment [Member]
Business Acquisition [Line Items]
Purchase price of acquired entities					$ 4,500
Cash purchase of equity interest					3,009
Advance to Atlas Energy	0	403	0		403
Purchase of interest in Laurel Mountain Midstream							49.00%
Assumed debt of Atlas					1,100
Payment to cash out Atlas equity awards						184
Percentage of funds carried under carry arrangement								75.00%
Drilling costs not incurred by Chevron under carry arrangement								1,300
Discount rate		8.00%
Fair value of consideration transferred				3,400
Assigned goodwill to the US within the upstream segment				27					27
Goodwill deductible for tax purposes				$ 0