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INVESTMENTS IN UNCONSOLIDATED AFFILIATES Investment in unconsolidated affiliates detail (Details) - USD ($)
shares in Millions, $ in Millions
Dec. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Dec. 31, 2015
Sep. 30, 2015
Schedule of Equity Method Investments [Line Items]          
Notes Receivable, Related Parties         $ 1,370
GOODWILL $ 23 $ 285   $ 923  
ETP [Member]          
Schedule of Equity Method Investments [Line Items]          
Number of common units of a subsidiary partnership that are held by a less than wholly-owned subsidiary of the Parent.         17.8
Notes Receivable, Related Parties     $ 541    
SUG Holding Note Receivable [Member]          
Schedule of Equity Method Investments [Line Items]          
Debt Instrument, Interest Rate, Stated Percentage         4.75%
Regency Merger [Member] | ETP [Member]          
Schedule of Equity Method Investments [Line Items]          
Number of common units of a subsidiary partnership that are held by a less than wholly-owned subsidiary of the Parent.         15.5