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Financial Instruments (Details 2) (Fair value measured on a recurring basis, USD $) In Millions, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Total |  |
Assets |  |
Plan asset for deferred compensation | $ 4.2 | $ 4.0
Total assets | 4.2 | 4.0
Liabilities |  |
Plan liability for deferred compensation | 4.2 | 4.0
Contingent consideration | 5.2 | 1.1
Total liabilities | 9.4 | 5.1
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets |  |
Plan asset for deferred compensation | 4.2 | 4.0
Total assets | 4.2 | 4.0
Liabilities |  |
Plan liability for deferred compensation | 4.2 | 4.0
Total liabilities | 4.2 | 4.0
Significant Unobservable Inputs (Level 3) |  |
Liabilities |  |
Contingent consideration | 5.2 | 1.1
Total liabilities | $ 5.2 | $ 1.1

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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of assets held under deferred compensation agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 + Details
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- Definition This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + 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=7578670&loc=d3e19207-110258 + Details
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- Definition Fair value, as of the balance sheet date, of potential payments under the contingent consideration arrangement including cash and shares. + References No definition available. + Details
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