Fair Value Measurement Derivative Instruments (Details) (Deferred taxes and other, USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Deferred taxes and other
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Forward exchange contracts designated as cash flow hedges	$ 1.4	$ 0.7

Fair value of all asset derivatives designated as cash flow hedging instruments.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959

Name:	us-gaap_CashFlowHedgeDerivativeInstrumentAssetsAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant