Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net income (loss)	$ 53	$ 775	$ (588)	$ 1,391
Other comprehensive income (loss), net of income taxes:
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	106	0	106	0
Other	(2)	0	(5)	4
Other comprehensive income (loss), net of income taxes	104	0	101	4
Comprehensive income (loss)	157	775	(487)	1,395
Comprehensive (income) loss attributable to noncontrolling interest	1	(1)	(1)	5
Comprehensive income (loss) attributable to company shareholders	$ 158	$ 774	$ (488)	$ 1,400