CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 163	$ 236
Items related to employee benefit plans:
Change in net actuarial loss, net of $(20) and $(16) tax	31	26
Change in net prior service costs, net of $(1) and $(1) tax	2	2
Foreign currency translation adjustment and other, net of $— and $— tax	(2)	(1)
Other comprehensive income	31	27
COMPREHENSIVE INCOME	$ 194	$ 263