Reportable Segments (Reconciliation of Reportable Segment and All Other Net Sales to Consolidated Net Sales) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Reportable Segments [Abstract]
Net sales of reportable segments and All Other		$ 3,045	$ 2,635	$ 8,317	$ 7,583
Impact of foreign currency movements	[1]	(37)	(28)	(62)	(104)
Net sales		$ 3,008	$ 2,607	$ 8,255	$ 7,479

[1] This amount primarily represents the impact of foreign currency adjustments in the Display Technologies segment.