Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net income (loss)	$ (32)	$ (2,418)
Other comprehensive income (loss), net of income taxes:
Other comprehensive income (loss), net of income taxes	2	(1)
Comprehensive income (loss)	(30)	(2,419)
Comprehensive (income) loss attributable to noncontrolling interest	0	6
Comprehensive income (loss) attributable to company shareholders	$ (30)	$ (2,413)