INVESTMENTS IN UNCONSOLIDATED AFFILIATES Investment in unconsolidated affiliates detail (Details) - USD ($) $ / shares in Units, $ in Millions	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Jan. 31, 2015	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Notes Receivable, Related Parties				$ 1,370
GOODWILL	$ 285		$ 923			$ 1,152
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.				17,800,000
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]
Schedule of Equity Method Investments [Line Items]
Business Acquisition, Number Of Share Received In Exchange Of Each Share					0.4066
Business Acquisition, Share Price					$ 0.32
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.				15,500,000