Statement of Consolidated Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	$ (5,564)	$ 613	$ (10,200)	$ 947
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 INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	(5,564)	613	(10,200)	946
Comprehensive income attributable to noncontrolling interest	36	108	51	206
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	$ (5,600)	$ 505	$ (10,251)	$ 740