Goodwill and Other Intangible Assets (Carrying Amount of Goodwill by Segment) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Balance		$ 1,936	$ 1,694
Acquired goodwill	[1]		259
Measurement period adjustment		3	11
Foreign currency translation adjustment		(4)	(28)
Balance		1,935	1,936
Display Technologies [Member]
Balance		132	136
Foreign currency translation adjustment		(3)	(4)
Balance		129	132
Optical Communications [Member]
Balance		926	671
Acquired goodwill	[1]		257
Measurement period adjustment		3	11
Foreign currency translation adjustment		2	(13)
Balance		931	926
Specialty Materials [Member]
Balance		150	150
Balance		150	150
Life Sciences [Member]
Balance		617	623
Acquired goodwill	[1]		2
Foreign currency translation adjustment		(1)	(8)
Balance		616	617
All Other [Member]
Balance		111	114
Foreign currency translation adjustment		(2)	(3)
Balance		$ 109	$ 111

[1] The Company completed the acquisition of CMD in 2018.