INVESTMENTS IN UNCONSOLIDATED AFFILIATES INV IN UNCONSOLIDATED AFF. - Schedule of Equity Method Investments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Summarized Financial Information, Revenue	$ 1,483	$ 665	$ 3,524	$ 1,844
Equity Method Investment, Summarized Financial Information, Income (Loss) from Continuing Operations before Extraordinary Items	144	24	201	43
Equity Method Investment, Summarized Financial Information, Net Income (Loss)	$ 107	$ 42	$ 115	$ 24
Regency [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.	31.4		31.4
Class F Units [Member] | Regency [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.	6.3		6.3