Goodwill and Other Intangible Assets (Carrying Amount of Goodwill by Segment) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Jun. 30, 2017	Dec. 31, 2018		Dec. 31, 2017
Balance			$ 1,694		$ 1,577
Acquired goodwill			259	[1]	99	[2]
Measurement period adjustment			11		(28)	[3]
Foreign currency translation adjustment			(28)		46
Balance			1,936		1,694
Purchase consideration			841
Display Technologies [Member]
Balance			136		126
Foreign currency translation adjustment			(4)		10
Balance			132		136
Optical Communications [Member]
Balance			671		645
Acquired goodwill			257	[1]	22	[2]
Measurement period adjustment			11		(1)	[3]
Foreign currency translation adjustment			(13)		5
Balance			926		671
Specialty Materials [Member]
Balance			150		150
Balance			150		150
Life Sciences [Member]
Balance			623		558
Acquired goodwill			2	[1]	43	[2]
Measurement period adjustment	[3]				1
Foreign currency translation adjustment			(8)		21
Balance			617		623
All Other [Member]
Balance			114		98
Acquired goodwill	[2]				34
Measurement period adjustment		$ (28)			(28)	[3]
Foreign currency translation adjustment			(3)		10
Balance			$ 111		$ 114

[1] The Company completed the acquisition of CMD during the second quarter and the fourth quarter of 2018.

[2] The Company completed two small acquisitions in the third quarter of 2017 which are reported in the Optical Communications and Life Sciences segment and one small acquisition in the first quarter of 2017 which is reported in All Other.

[3] In the second quarter of 2017, the Company recorded measurement period adjustments of $28 million related to an acquisition completed in a previous period.