Holdco Transaction (Narrative) (Details) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013 Holdco ETP	Mar. 21, 2013 Holdco Acquisition
Business Acquisition
Business Acquisition Units Acquired		49.5
Business Acquisition, Cost of Acquired Entity, Cash Paid		$ 1,400,000,000
Estimated Closing Adjustments		$ 68,000,000
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest	100.00%

The amount of cash consideration adjusted for closing adjustments related to a business acquisition.

No definition available.

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The amount of cash consideration given by the entity's parent to acquire noncontrolling interests.

No definition available.

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The amount of equity consideration given by the entity's parent to acquire noncontrolling interests.

No definition available.

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The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 22

-Article 12

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