STATEMENT OF CONSOLIDATED COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTERESTS	$ (117)	$ 161	$ (435)	$ 636
OTHER COMPREHENSIVE LOSS, NET OF TAX:
Share of equity method interests other comprehensive loss	(1)	0	(1)	0
COMPREHENSIVE INCOME (LOSS) INCLUDING NONCONTROLLING INTERESTS	(118)	161	(436)	636
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(171)	81	(578)	421
Noncontrolling interests, Egypt
OTHER COMPREHENSIVE LOSS, NET OF TAX:
Comprehensive income attributable to noncontrolling interest	38	80	125	215
Noncontrolling interests, Altus
OTHER COMPREHENSIVE LOSS, NET OF TAX:
Comprehensive income attributable to noncontrolling interest	(3)	0	(5)	0
Altus Preferred Unit limited partners
OTHER COMPREHENSIVE LOSS, NET OF TAX:
Comprehensive income attributable to noncontrolling interest	$ 18	$ 0	$ 22	$ 0