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Acquisitions and Related Transactions Acquisitions (2017 Transactions) (Details) - USD ($) $ in Millions	1 Months Ended				12 Months Ended
	Oct. 31, 2017	Jul. 31, 2017	Feb. 28, 2017	Oct. 31, 2015	Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2017	Feb. 01, 2017
Business Acquisition [Line Items]
Noncontrolling Interest, Increase from Sale of Parent Equity Interest		$ 988			$ 779		$ 65
Intangible assets, net					5,512	[1]		$ 6,116
Property, Plant and Equipment, Net					$ 53,578	[1]		$ 61,088
Permian Express Partners LLC [Member]
Business Acquisition [Line Items]
Percent of total equity ownership of a subsidiary		88.00%
Intangible assets, net									$ 547
Property, Plant and Equipment, Net									$ 435
ETP [Member] | Rover Contribution [Member]
Business Acquisition [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest	50.10%
ETP [Member] | Holdco [Member] | Rover Contribution [Member]
Business Acquisition [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest		49.90%
Holdco [Member] | Rover Pipeline LLC [Member] | Rover Contribution [Member]
Business Acquisition [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest		65.00%
Blackstone [Member] | Rover Contribution [Member]
Business Acquisition [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest	49.90%
Dakota Access and ETCOC [Member]
Business Acquisition [Line Items]
Percent of total equity ownership of a subsidiary		15.00%
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest				75.00%
Phillips 66 Company [Member] | Dakota Access and ETCOC [Member]
Business Acquisition [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest			25.00%
Bakken Holdings Company LLC [Member]
Business Acquisition [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest				40.00%
Bakken Holdings Company LLC [Member] | Sunoco Logistics [Member]
Business Acquisition [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest			49.00%
Bakken Holdings Company LLC [Member] | ETP [Member]
Business Acquisition [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest			100.00%
Bakken Holdings Company LLC [Member] | Bakken Pipeline Investments LLC [Member]
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired									200000000000.00%
Bakken Pipeline Investments LLC [Member] | Dakota Access and ETCOC [Member]
Business Acquisition [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest			75.00%
[1] * As adjusted. See Note 2.

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