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Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Senior Notes [Member]
Liabilities [Abstract]
Notes, fair value	$ 397.5	$ 405.0
Stated percentage (in hundredths)	6.875%
Convertible Notes payable [Member]
Liabilities [Abstract]
Notes, fair value	103.4	99.9
Stated percentage (in hundredths)	8.00%
Recurring [Member]
Assets:
Foreign exchange forward contracts	1.2
Liabilities [Abstract]
Interest rate swap	1.4	2.3
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Foreign exchange forward contracts	0
Liabilities [Abstract]
Interest rate swap	0	0
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets:
Foreign exchange forward contracts	1.2
Liabilities [Abstract]
Interest rate swap	1.4	2.3
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Foreign exchange forward contracts	0
Liabilities [Abstract]
Interest rate swap	$ 0	$ 0

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps.

+ References

No definition available.

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- Definition

Fair value as of the balance sheet date of all derivative liabilities designated as interest rate fair value hedging instruments.

+ References

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

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- Definition

Fair value of financial and nonfinancial obligations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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