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Income Taxes - Narrative (Details) (USD $) In Millions, unless otherwise specified | 9 Months Ended
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Sep. 30, 2013 | Sep. 30, 2012
Income Tax Disclosure [Abstract] |  |
Valuation Allowance, Deferred Tax Asset, Change in Amount | $ 6.6 |
Income Taxes Paid, Net | $ 39.6 | $ 29.4

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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 + Details
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- Definition The amount of the change in the period in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e32123-109318 + Details
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