Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Carrying amount and estimated fair value of long term debt
Long-term Debt, Carrying Amount	$ 1,152.4	$ 1,172.9
Long-term Debt, Fair Value	1,205.4	1,217.6
Senior secured term loan (including current portion) [Member]
Carrying amount and estimated fair value of long term debt
Long-term Debt, Carrying Amount	543.4	561.9
Long-term Debt, Fair Value	550.0	560.1
Senior Unsecured Notes Due Two Thousand And Seventeen [Member]
Carrying amount and estimated fair value of long term debt
Long-term Debt, Carrying Amount	295.6	294.9
Long-term Debt, Fair Value	321.8	325.5
Senior Unsecured Notes Due Two Thousand And Twenty [Member]
Carrying amount and estimated fair value of long term debt
Long-term Debt, Carrying Amount	300.0	300.0
Long-term Debt, Fair Value	321.8	317.9
Foreign Country Loan [Member]
Carrying amount and estimated fair value of long term debt
Long-term Debt, Carrying Amount	13.4	16.1
Long-term Debt, Fair Value	11.8	14.1
Total Carrying Amount in Balance Sheet [Member] \| Interest rate swaps [Member]
Fair Value Measurements
Fair value liabilities measured on recurring basis	(4.0)	(4.8)
Total Carrying Amount in Balance Sheet [Member] \| Foreign currency hedge contracts [Member]
Fair Value Measurements
Fair value liabilities measured on recurring basis		(0.4)
Total Carrying Amount in Balance Sheet [Member] \| Money Market Fund [Member]
Fair Value Measurements
Money Market Fund	312.2	75.3
Assets Measured At Fair Value [Member] \| Foreign currency hedge contracts [Member]
Fair Value Measurements
Fair value assets measured on recurring basis		1.2
Assets Measured At Fair Value [Member] \| Money Market Fund [Member]
Fair Value Measurements
Money Market Fund	312.2	75.3
Liabilities Measured At Fair Value [Member] \| Interest rate swaps [Member]
Fair Value Measurements
Fair value liabilities measured on recurring basis	(4.0)	(4.8)
Liabilities Measured At Fair Value [Member] \| Foreign currency hedge contracts [Member]
Fair Value Measurements
Fair value liabilities measured on recurring basis		(1.6)
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Money Market Fund [Member]
Fair Value Measurements
Money Market Fund	312.2	75.3
Significant Other Observable Inputs (Level 2) [Member] \| Interest rate swaps [Member]
Fair Value Measurements
Fair value liabilities measured on recurring basis	(4.0)	(4.8)
Significant Other Observable Inputs (Level 2) [Member] \| Foreign currency hedge contracts [Member]
Fair Value Measurements
Fair value liabilities measured on recurring basis		$ (0.4)

This element represents the portion of the balance sheet assertion valued at fair value by the entity 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. This item includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

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Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

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- Definition

Derivative instrument obligations meeting the definition of a liability which the Company is a party to as of the balance sheet date.

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- Definition

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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