CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (LOSS) (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Pension and other postretirement adjustment	$ 15	$ 1	$ 67
Deferred income (loss) on hedging	(3)	(1)	3
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	$ (2)	$ (5)	$ 0