Amount of cash paid to acquire the entity.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph f(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Name:	us-gaap_BusinessAcquisitionCostOfAcquiredEntityCashPaid
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Acquisitions (Details) (USD $) In Millions, unless otherwise specified		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2011 Industrial [Member] Companies	Sep. 30, 2011 Electrical/electronic materials [Member] Companies	Dec. 01, 2012 Exego Group [Member]	Sep. 26, 2011 Exego Group [Member]
Acquisitions (Textual) [Abstract]
Companies acquired		3	1
Percentage of investment in specified company agreed to purchase					30.00%
Announced agreement purchase price					$ 150
Option to purchase specified Percentage of investment contingent upon earnings				70.00%
Cost of acquired companies	105.1
Goodwill and other intangible assets acquired	$ 75