Operating Segments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2011	Dec. 31, 2010
Segment Reporting Information
Decrease in contingent liability associated with an acquisition	$ 22	$ 22
Display Technologies [Member]
Segment Reporting Information
Number of customers individually accounting for ten percent or more of each segment's sales	4	3
Percent of total segment sales	76.00%	67.00%
Segment assets	10,300.0	10,300.0	9,100.0
Capital expenditures		800
Telecommunications [Member]
Segment Reporting Information
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	1,200.0	1,200.0	1,000.0
Capital expenditures		100
Environmental Technologies [Member]
Segment Reporting Information
Number of customers individually accounting for ten percent or more of each segment's sales	3	3
Percent of total segment sales	89.00%	85.00%
Specialty Materials [Member]
Segment Reporting Information
Number of customers individually accounting for ten percent or more of each segment's sales	2	2
Percent of total segment sales	47.00%	40.00%
Segment assets	1,600.0	1,600.0	900.0
Capital expenditures		$ 300
Life Sciences [Member]
Segment Reporting Information
Number of customers individually accounting for ten percent or more of each segment's sales	2	2
Percent of total segment sales	51.00%	43.00%

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

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Percent Of Total Segment Sales

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- Definition

This element represents the amount of any change, including any differences arising upon settlement, recognized during the reporting period in the value of a liability, arising from an item of contingent consideration, assumed in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

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-Paragraph 72

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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 Accounting Standards Codification

-Topic 230

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-Subparagraph (c)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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

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