The conversion ration for partnership units to be exchanged in a proposed transaction.

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Number of common units of a subsidiary partnership that are held by a less than wholly-owned subsidiary of the Parent.

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Number of common units of a subsidiary partnership that are held by a wholly-owned subsidiary of the Parent.

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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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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The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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The amount for notes payable (written promise to pay), payable to related parties, which are due after one year (or one business cycle).

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For an unclassified balance sheet, amounts due from parties associated with the reporting entity as evidenced by a written promise to pay.

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The number of units redeemed during the year of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners.

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Mergers and Other Transactions (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended
	Feb. 28, 2014	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Jan. 31, 2015	Dec. 31, 2014	Feb. 19, 2014
Notes Receivable, Related Parties					$ 1,370
Goodwill		$ 285		$ 923			$ 1,152
Regency [Member]
Number of common units of a subsidiary partnership that are held by a less than wholly-owned subsidiary of the Parent.							31,400,000
ETP [Member]
Notes Receivable, Related Parties			$ 541
Number of common units of a subsidiary partnership that are held by a less than wholly-owned subsidiary of the Parent.					17,800,000
Number of common units of a subsidiary partnership that are held by a wholly-owned subsidiary of the Parent.							2,200,000
NOTE PAYABLE TO RELATED PARTY								$ 1,090
7.60% Senior Notes, due February 1, 2024 [Member]
Debt Instrument, Interest Rate, Stated Percentage		7.60%
8.25% Senior Notes, due November 14, 2029 [Member]
Debt Instrument, Interest Rate, Stated Percentage		8.25%
Regency 4.50% Senior Notes Due 2023 [Member]
Debt Instrument, Interest Rate, Stated Percentage		4.50%
Guarantor Obligations, Current Carrying Value		$ 600
Class F Units [Member] \| Regency [Member]
Number of common units of a subsidiary partnership that are held by a less than wholly-owned subsidiary of the Parent.							6,300,000
Lake Charles LNG Transaction [Member]
Partners' Capital Account, Units, Redeemed	18,700,000
Goodwill								184
Intangible Assets, Net (Excluding Goodwill)								$ 50
Regency Merger [Member]
Business Acquisition, Number Of Share Received In Exchange Of Each Share						0.4066
Business Acquisition, Share Price						$ 0.32
Regency Merger [Member] \| ETP [Member]
Number of common units of a subsidiary partnership that are held by a less than wholly-owned subsidiary of the Parent.					15,500,000