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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Reportable Segments [Abstract]
Net sales of reportable segments and All Other		$ 2,969	$ 3,045	$ 8,805	$ 8,317
Impact of foreign currency movements	[1]	(35)	(37)	(119)	(62)
Net sales		$ 2,934	$ 3,008	$ 8,686	$ 8,255

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