Consolidated Statements of Comprehensive Income - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 260,000,000	$ 340,000,000	$ 337,000,000
Other comprehensive loss, before tax:
Foreign currency translation adjustment	(65,000,000)	(180,000,000)	(206,000,000)
Foreign currency gain reclassified into net income	0	(8,000,000)	0
Net change in derivative hedge agreements:
Unrealized losses	0	(22,000,000)	(22,000,000)
Amount of (gain) loss reclassified into net income	(2,000,000)	20,000,000	6,000,000
Net change in postretirement benefit plans:
Net (loss) gain	(20,000,000)	23,000,000	(110,000,000)
Prior service credit	1,000,000	1,000,000	17,000,000
Amortization of prior service credit cost	(3,000,000)	(3,000,000)	(1,000,000)
Amortization of net actuarial loss into net income	13,000,000	18,000,000	11,000,000
Settlement	0	0	1,000,000
Foreign currency translation adjustment	19,000,000	21,000,000	20,000,000
Other comprehensive loss, before tax	(57,000,000)	(130,000,000)	(284,000,000)
Income tax expense (benefits) related to other comprehensive loss	23,000,000	9,000,000	(18,000,000)
Other comprehensive loss, net of tax	(80,000,000)	(139,000,000)	(266,000,000)
Comprehensive income	$ 180,000,000	$ 201,000,000	$ 71,000,000