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Derivative Instruments (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Derivative [Line Items]
Intercompany debt designated as a non-derivative net investment hedging instrument	$ 15.1	$ 15.1		$ 15.8
Gain (loss) currency translation adjustment	$ 0.1		$ 0.2
Foreign Currency Derivatives
Derivative [Line Items]
Notional amounts of foreign currency derivatives				$ 72.5
Minimum | Foreign Currency Derivatives
Derivative [Line Items]
Derivative maturities
Maximum | Foreign Currency Derivatives
Derivative [Line Items]
Derivative maturities

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- Definition

Derivative maturities

+ References

No definition available.

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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



-Publisher SEC



-Name Regulation S-X (SX)



-Number 210



-Article 12



-Section 13



-Sentence Column B

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- Definition

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.

+ References

No definition available.

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- Definition

Amount of gain (loss) from the ineffectiveness of the hedge.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 815



-SubTopic 10



-Section 50



-Paragraph 4C



-Subparagraph (d)(1)



-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959



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-Publisher FASB



-Name Accounting Standards Codification



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-SubTopic 25



-Section 50



-Paragraph 1



-Subparagraph (a)(1)



-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

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- Definition

Net fair value of all derivatives designated as hedges of net investment in foreign operations.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 815



-SubTopic 10



-Section 45



-Paragraph 5



-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

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