Business Acquisition, Percentage of Interests Acquired

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- Definition

Royalty Rate

+ References

No definition available.

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

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-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.14)

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- Definition

Capitalized costs of proved properties incurred for any combination mineral interests acquisitions; wells and related equipment; support equipment and facilities; and uncompleted wells and equipment and other costs not previously disclosed within this table.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

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-Name Accounting Standards Codification

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-Glossary Proved Properties

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-Name Accounting Standards Codification

-Glossary Properties

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- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash Equivalents

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-Name Accounting Standards Codification

-Topic 210

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-Paragraph 1

-Subparagraph (SX 210.5-02.1)

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-Topic 210

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-Section 45

-Paragraph 1

-Subparagraph (a)

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-Topic 230

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-Paragraph 4

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- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

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-Topic 815

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-Topic 210

-SubTopic 20

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-Paragraph 3

-Subparagraph (c)

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-Name Accounting Standards Codification

-Glossary Current Assets

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- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

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- Definition

Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed.

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-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

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- Definition

Net carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary.

+ References

No definition available.

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Variable Interest Entities - Narrative (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 2,907	$ 4,108	$ 1,004	$ 837
Short-term derivative assets	612us-gaap_DerivativeAssetsCurrent	879us-gaap_DerivativeAssetsCurrent
Proved natural gas and oil properties	60,769	58,594
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	44,700	39,043
Other liabilities, current	2,474us-gaap_OtherLiabilitiesCurrent	3,061us-gaap_OtherLiabilitiesCurrent
Variable Interest Entities, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Cash and cash equivalents	1	1
Short-term derivative assets	12	16
Proved natural gas and oil properties	488	488
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	318	251
Other liabilities, current	12	15
Corporate Ownership Requirement [Member] \| Mineral Acquisition Company I, L.P. [Member] \| Limited Partner [Member]
Variable Interest Entity [Line Items]
Percentage of acquisition	10.00%
Variable interest entity, carrying value of investment	10
Corporate Ownership Requirement [Member] \| Mineral Acquisition Company I, L.P. [Member] \| Limited Partner [Member] \| Minimum [Member]
Variable Interest Entity [Line Items]
Royalty percentage minimum	7.00%
Royalty percentage maximum	7.00%
Corporate Ownership Requirement [Member] \| Mineral Acquisition Company I, L.P. [Member] \| Limited Partner [Member] \| Maximum [Member]
Variable Interest Entity [Line Items]
Other Commitment	25
Royalty percentage minimum	22.50%
Royalty percentage maximum	22.50%
Partner Ownership Requirement [Member] \| Mineral Acquisition Company I, L.P. [Member] \| Limited Partner [Member]
Variable Interest Entity [Line Items]
Percentage of acquisition	90.00%
Partner Ownership Requirement [Member] \| Mineral Acquisition Company I, L.P. [Member] \| Limited Partner [Member] \| Maximum [Member]
Variable Interest Entity [Line Items]
Other Commitment	$ 225