Statement of Consolidated Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
NET LOSS INCLUDING NONCONTROLLING INTEREST	$ (5,646)	$ (1,241)	$ (15,846)	$ (294)
Commodity cash flow hedge activity, net of tax:
Change in fair value of derivative instruments				(1)
Commodity cash flow hedge activity, net of tax				(1)
COMPREHENSIVE LOSS INCLUDING NONCONTROLLING INTEREST	(5,646)	(1,241)	(15,846)	(295)
Comprehensive income attributable to noncontrolling interest	9	89	60	295
COMPREHENSIVE LOSS ATTRIBUTABLE TO COMMON STOCK	$ (5,655)	$ (1,330)	$ (15,906)	$ (590)