CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 268	$ 288	$ 546	$ 592
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Foreign currency translation adjustment, net of $—, $—, $— and $— tax	0	3	0	0
Other comprehensive income	0	3	0	0
COMPREHENSIVE INCOME	$ 268	$ 291	$ 546	$ 592