Goodwill And Other Intangible Assets (Schedule Of Carrying Amount Of Goodwill By Segment) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Goodwill And Other Intangible Assets [Line Items]
Goodwill Balance	$ 664	$ 664
Telecommunications [Member]
Goodwill And Other Intangible Assets [Line Items]
Goodwill Balance	209	209
Display Technologies [Member]
Goodwill And Other Intangible Assets [Line Items]
Goodwill Balance	9	9
Specialty Materials [Member]
Goodwill And Other Intangible Assets [Line Items]
Goodwill Balance	150	150
Life Sciences [Member]
Goodwill And Other Intangible Assets [Line Items]
Goodwill Balance	$ 296	$ 296