Maximum period the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80748-113994

Name:	us-gaap_MaximumLengthOfTimeHedgedInInterestRateCashFlowHedge1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Derivative Instruments and Hedges (Details Textual) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013 Minimum [Member]	Sep. 30, 2013 Maximum [Member]	Sep. 30, 2013 Forward Exchange Contract [Member]	Dec. 31, 2012 Forward Exchange Contract [Member]	Sep. 30, 2013 Interest Rate Swap [Member]	Dec. 31, 2012 Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, notional amount				$ 666.6	$ 608.9	$ 170.0	$ 275.0
Period of forward exchange contracts		1 day	20 months
Maximum remaining length of interest rate swap contract	21 months