Cost Reduction Actions (Details Textual) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
Jun. 30, 2012 2012 Program [Member] Positions Employee	Dec. 31, 2011 2011 Actions [Member] Positions	Jun. 30, 2012 2011 Actions [Member] Employee
Cost Reduction Actions (Textual) [Abstract]
Charges	$ 18.9	$ 45.0
Number of positions reduced as a result of Cost Reduction Actions	420	910
Number of positions remaining	50		0

The aggregate amount provided for estimated restructuring charges, remediation costs, and asset impairment loss during an accounting period. Generally, these items are either unusual or infrequent, but not both (in which case they would be extraordinary items).

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.3)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Name:	us-gaap_RestructuringSettlementAndImpairmentProvisions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration