Goodwill and Other Intangible Assets (Carrying Amount of Goodwill by Segment) (Details) $ in Millions	6 Months Ended
Jun. 30, 2018 USD ($)
Balance	$ 1,694
Acquired goodwill	242
Foreign currency translation adjustment	(18)
Balance	1,918
Display Technologies [Member]
Balance	136
Foreign currency translation adjustment	(4)
Balance	132
Optical Communications [Member]
Balance	671
Acquired goodwill	242
Foreign currency translation adjustment	(6)
Balance	907
Specialty Materials [Member]
Balance	150
Balance	150
Life Sciences [Member]
Balance	623
Foreign currency translation adjustment	(5)
Balance	618
All Other [Member]
Balance	114
Foreign currency translation adjustment	(3)
Balance	$ 111

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

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