STATEMENT OF CONSOLIDATED COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTERESTS	$ (3,682)	$ 286	$ 1,503
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Pension and postretirement benefit plan	13	0	7
Currency translation adjustment	0	0	109
Share of equity method interests other comprehensive loss	(1)	0	0
Other comprehensive income, net of tax	12	0	116
COMPREHENSIVE INCOME (LOSS) INCLUDING NONCONTROLLING INTERESTS	(3,670)	286	1,619
Comprehensive income attributable to Altus Preferred Unit limited partners		(1)	(199)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(3,541)	40	1,420
Noncontrolling Interest, Egypt
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Comprehensive income attributable to noncontrolling interest	167	245	199
Comprehensive income attributable to Altus Preferred Unit limited partners	(167)	(245)	(199)
Noncontrolling Interest, Altus
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Comprehensive income attributable to noncontrolling interest	(334)	1	0
Comprehensive income attributable to Altus Preferred Unit limited partners	334	(1)	0
Redeemable Noncontrolling Interest - Altus Preferred Unit Limited Partners
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Comprehensive income attributable to Altus Preferred Unit limited partners	$ 38	$ 0	$ 0