Income Taxes - Narrative (Details) (USD $) In Millions | 9 Months Ended | |
|---|---|---|
Sep. 30, 2011 | Sep. 30, 2010 | |
| Income Tax Contingency [Line Items] | ||
| Unrecognized Tax Benefits, Interest on Income Taxes Expense | $ 0.2 | $ (2.3) |
| Proceeds from Income Tax Refunds | 24.9 | |
| Income Taxes Paid | 18.2 | 49.9 |
Internal Revenue Service (IRS) [Member] | ||
| Income Tax Contingency [Line Items] | ||
| Unrecognized Tax Benefit, Threshold For Refund Requiring Approval From Taxing Authority | 2 | |
Internal Revenue Service (IRS) [Member] | Expiration From 2006 [Member] | ||
| Income Tax Contingency [Line Items] | ||
| Unrecognized Tax Benefits, Interest on Income Taxes Expense | (2.8) | |
Internal Revenue Service (IRS) [Member] | Expiration From All Other Years [Member] | ||
| Income Tax Contingency [Line Items] | ||
| Unrecognized Tax Benefits, Interest on Income Taxes Expense | $ 0.5 | |
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- Definition Threshold For Refund Requiring Approval From Taxing Authority
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of cash received during the period as refunds for the overpayment of taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition This element represents interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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