Fair Value of Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Assets:
Short-term investments	$ 178.0
Significant Other Observable Inputs (Level 2)
Liabilities:
Fair value of the long-term fixed interest rate debt	257.2	244.1
Recurring basis \| Total
Assets:
Cash equivalents	67.9	6.8
Short-term investments	178.0
Restricted cash	1.8	2.7
Foreign exchange contracts		2.3
Embedded derivatives in purchase and delivery contracts	0.6	0.2
Fixed price commodity contracts		0.1
Long-term restricted cash	3.4	4.0
Total assets recorded at fair value	251.7	16.1
Liabilities:
Contingent consideration	11.9	7.0
Foreign exchange contracts	5.1
Embedded derivatives in purchase and delivery contracts	0.4	0.4
Fixed price commodity contracts	0.2
Total liabilities recorded at fair value	17.6	7.4
Recurring basis \| Quoted Prices in Active Markets Available (Level 1)
Assets:
Cash equivalents	67.9	6.8
Short-term investments	178.0
Restricted cash	1.8	2.7
Long-term restricted cash	3.4	4.0
Total assets recorded at fair value	251.1	13.5
Recurring basis \| Significant Other Observable Inputs (Level 2)
Assets:
Foreign exchange contracts		2.3
Embedded derivatives in purchase and delivery contracts	0.6	0.2
Fixed price commodity contracts		0.1
Total assets recorded at fair value	0.6	2.6
Liabilities:
Foreign exchange contracts	5.1
Embedded derivatives in purchase and delivery contracts	0.4	0.4
Fixed price commodity contracts	0.2
Total liabilities recorded at fair value	5.7	0.4
Recurring basis \| Significant Unobservable Inputs (Level 3)
Liabilities:
Contingent consideration	11.9	7.0
Total liabilities recorded at fair value	$ 11.9	$ 7.0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as an asset.

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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.

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Fair value of financial and nonfinancial obligations.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. For a classified balance sheet represents the current portion only (the noncurrent portion has a separate concept); there is a separate and distinct element for unclassified presentations.

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Cash and equivalents whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements.

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