Goodwill and Other Intangible Assets (Carrying Amount of Goodwill by Segment) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2018 USD ($)
Balance	$ 1,694
Acquired goodwill	244	[1]
Measurement period adjustment	11
Foreign currency translation adjustment	(19)
Balance	1,930
Display Technologies [Member]
Balance	136
Foreign currency translation adjustment	(4)
Balance	132
Optical Communications [Member]
Balance	671
Acquired goodwill	242	[1]
Measurement period adjustment	11
Foreign currency translation adjustment	(7)
Balance	917
Specialty Materials [Member]
Balance	150
Balance	150
Life Sciences [Member]
Balance	623
Acquired goodwill	2	[1]
Foreign currency translation adjustment	(6)
Balance	619
All Other [Member]
Balance	114
Foreign currency translation adjustment	(2)
Balance	$ 112

[1] The Company completed the acquisition of 3M's Communications Market Division in the Optical Communications segment during the second quarter of 2018. Refer to Note 8 (Acquisitions) to the Consolidated Financial Statements for additional information on this acquisition.