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Income Taxes Unrecognized Tax Benefts (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Income Tax Contingency [Line Items] |  |  |  |
Unrecognized Tax Benefits, Beginning Balance | $ 25.8 | $ 47.6 | $ 40.6 | $ 40.6
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions |  | 0 | 6.2 | 0.5
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions |  | (0.8) | (0.2) | (1.2)
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions |  | 1.3 | 1.0 | 0.7
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities |  | (22.3) | 0 |
Expected cash payment related to settlement of IRS appeals | 4.1 |  |  |
Unrecognized Tax Benefits, Ending Balance |  | 25.8 | 47.6 | 40.6
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Beginning Balance | 7.4 | 21.4 | 15.3 | 5.2
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Increases Resulting from Prior Period Tax Positions |  | 1.0 | 6.1 | 4.1
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Decreases Resulting from Prior Period Tax Positions |  | (2.3) | 0 | 0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Increases Resulting from Current Period Tax Positions |  | 0 | 0.3 | 6.0
Tax Adjustments, Settlements and Unusual Provisions, Interest and Penalties |  | (12.7) | (0.3) |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Ending Balance |  | 7.4 | 21.4 | 15.3
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense |  | (1.3) | 6.1 | 10.1
Internal Revenue Service (IRS) [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities |  | 28.7 |  |
Foreign Country [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Tax Adjustments, Settlements, and Unusual Provisions |  | $ 9.5 |  |

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- Definition Expected cash outflow in the next twelve months, as a result of the settlement of our 2004-2007 IRS audit appeals. + References No definition available. + Details
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- Definition Reflects the effect on interest and penalties of adjustments of previously recorded tax expense, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including, but not limited to, tax assessment reversal, IRS tax settlement and unusual repatriation of foreign earnings. + References No definition available. + Details
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- Definition The gross amount of decreases in interest and penalties associated with unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns. + References No definition available. + Details
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- Definition The gross amount of increases in interest and penalties associated with unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns. + References No definition available. + Details
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- Definition Reflects the effects of adjustments of previously recorded tax expense, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, IRS tax settlement and unusual repatriation of foreign earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 10 -Subparagraph b -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 FASB Interpretation (FIN) -Number 48 -Paragraph 10A, 10B, 10C -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a -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 Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a(3) -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 Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition This element represents the total of accruals as of the date of the statement of financial position for interest 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 and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -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 FASB Interpretation (FIN) -Number 48 -Paragraph 15, 16 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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