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Acquisitions (Details) In Millions, except Per Share data, unless otherwise specified | 12 Months Ended | 0 Months Ended |  |  |  |  |
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Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2011 USD ($) | Apr. 16, 2012 Damilo Group [Member] USD ($) | Apr. 16, 2012 Damilo Group [Member] EUR (€) | Dec. 31, 2013 Damilo Group [Member] USD ($) | Dec. 31, 2013 Damilo Group [Member] EUR (€) | Dec. 31, 2012 Damilo Group [Member] USD ($) | Dec. 31, 2012 Damilo Group [Member] EUR (€) | Dec. 31, 2013 Proservia SA [Member] USD ($) | Dec. 31, 2013 Proservia SA [Member] EUR (€) | Dec. 31, 2012 Proservia SA [Member] USD ($) | Dec. 31, 2012 Proservia SA [Member] EUR (€) | Dec. 31, 2011 Proservia SA [Member] USD ($) | Dec. 31, 2011 Proservia SA [Member] EUR (€)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total purchase price |  |  |  | $ 28.0 | € 21.2 |  |  |  |  |  |  |  |  | $ 29.4 | € 21.6
Total cash consideration paid for acquisitions, net of cash acquired | 46.3 | 49.0 | 49.0 |  |  |  |  |  |  |  |  |  |  |  |
Acquisition date |  |  |  | Apr. 16, 2012 | Apr. 16, 2012 |  |  |  |  |  |  |  |  |  |
Assumed liabilities |  |  |  | 44.6 | 33.8 |  |  |  |  |  |  |  |  |  |
Goodwill | 52.2 | 46.2 |  | 40.6 | 30.8 |  |  |  |  |  |  |  |  | 27.7 | 20.7
Intangible assets | 10.1 | 7.6 |  | 8.0 | 6.3 | 6.8 | 5.0 | 7.6 | 5.8 | 11.2 | 8.1 | 12.4 | 9.4 |  |
Assets acquired, net of goodwill, related intangible assets and cash |  |  |  | $ 23.6 | € 17.9 |  |  |  |  |  |  |  |  |  |
Value of common stock acquired (price per share) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 19.93 | € 14.89

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- Definition The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 52 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 52 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 53 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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