Operating Segments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2011	Dec. 31, 2010
Display Technologies [Member]
Segment Reporting Information [Line Items]
Number of customers individually accounting for ten percent or more of each segment's sales	4	3
Percent of total segment sales	75.00%	67.00%
Telecommunications [Member]
Segment Reporting Information [Line Items]
Number of customers individually accounting for ten percent or more of each segment's sales	1	1
Percent of total segment sales	12.00%	12.00%
Segment assets	$ 1,200	$ 1,200	$ 1,000
Capital expenditures		70
Environmental Technologies [Member]
Segment Reporting Information [Line Items]
Number of customers individually accounting for ten percent or more of each segment's sales	3	3
Percent of total segment sales	86.00%	83.00%
Specialty Materials [Member]
Segment Reporting Information [Line Items]
Number of customers individually accounting for ten percent or more of each segment's sales	2	2
Percent of total segment sales	39.00%	37.00%
Segment assets	1,600	1,600	900
Capital expenditures		$ 200
Life Sciences [Member]
Segment Reporting Information [Line Items]
Number of customers individually accounting for ten percent or more of each segment's sales	2	2
Percent of total segment sales	36.00%	39.00%

Number Of Customers Individually Accounting For Ten Percent Or More Of Each Segment's Sales

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- Definition

Percent Of Total Segment Sales

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- Definition

The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 15

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 17
-Subparagraph c

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of net assets (total assets less total liabilities) attributed to the reportable segment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-Paragraph 28

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