STATEMENT OF CONSOLIDATED COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
NET INCOME INCLUDING NONCONTROLLING INTEREST	$ 161	$ 105	$ 636	$ 985
OTHER COMPREHENSIVE INCOME:
Currency translation adjustment	0	109	0	109
COMPREHENSIVE INCOME INCLUDING NONCONTROLLING INTEREST	161	214	636	1,094
Comprehensive income attributable to noncontrolling interest	80	42	215	137
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON STOCK	$ 81	$ 172	$ 421	$ 957