Segment Information - PPE and Geographical Sales (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information
Property, plant and equipment, net	$ 3,085	$ 3,131	$ 2,880
Net sales	6,877	6,869	6,702
U.S.
Segment Reporting Information
Property, plant and equipment, net	681	757	749
Net sales	2,020	2,072	2,124
Non-U.S.
Segment Reporting Information
Property, plant and equipment, net	2,404	2,374	2,131
Net sales	$ 4,857	$ 4,797	$ 4,578