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This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date.

+ References

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- Definition

This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to intangibles acquired in connection with a business combination for which the initial accounting was incomplete.

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

-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

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- Definition

This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to property, plant, and equipment acquired in connection with a business combination for which the initial accounting was incomplete.

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+ Details

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- Definition

Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.

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- Definition

Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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- Definition

Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

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

-Publisher FASB

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- Definition

Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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- Definition

Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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- Definition

The amount of property, plant, and equipment recognized as of the acquisition date.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

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-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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- Definition

This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to goodwill in connection with a business combination for which the initial accounting was incomplete.

+ References

No definition available.

+ Details

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- Definition

This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to investments acquired in connection with a business combination for which the initial accounting was incomplete.

+ References

No definition available.

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- Definition

Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Investments

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No definition available.

+ Details

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Acquisition (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Jul. 01, 2014
Business Acquisition [Line Items]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment	$ 150
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Goodwill [Line Items]	25
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles	(168)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Investments	(7)
Business Acquisition, Purchase Price Allocation [Abstract]
Goodwill	1,145us-gaap_Goodwill	1,120us-gaap_Goodwill
Williams Partners [Member] \| Access Midstream Partners Acquisition [Member]
Business Acquisition, Purchase Price Allocation [Abstract]
Accounts receivable			168
Other current assets			63
Investments			5,865
Property, plant and equipment - net			7,165
Goodwill			499
Other intangible assets			8,841
Current liabilities			(408)
Debt			(4,052)
Other noncurrent liabilities			(9)
Williams Partners [Member] \| Access Midstream Partners Acquisition [Member] \| ACMP's subsidiaries [Member]
Business Acquisition, Purchase Price Allocation [Abstract]
Noncontrolling Interest			(958)
Williams Partners [Member] \| Access Midstream Partners Acquisition [Member] \| Access Midstream Partners Lp [Member]
Business Acquisition, Purchase Price Allocation [Abstract]
Noncontrolling Interest			$ (6,544)