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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, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Income Tax Contingency [Line Items] |  |  |
Unrecognized tax benefits, beginning balance | $ 20.7 | $ 25.8 | $ 47.6
Increase in prior year tax positions | 6.1 | 0 | 0
Decrease in prior year tax positions | (4.4) | (1.1) | (0.8)
Increase in current year tax positions | 4.0 | 0.4 | 1.3
Settlement | (4.7) | (4.4) | (22.0)
Unrecognized tax benefits, ending balance | 21.7 | 20.7 | 25.8
Unrecognized tax benefits, interest and penalties, beginning balance | 10.2 | 7.4 | 21.4
Interest and penalties, increase in prior year tax positions | 0.1 | 2.8 | 1.0
Interest and penalties, decrease in prior year tax positions | (6.2) | 0 | (2.3)
Interest and penalties, increase in current year tax positions | 0 | 0 | 0
Interest and penalties, settlement | 0 | 0 | (12.7)
Unrecognized tax benefits, interest and penalties, ending balance | 4.1 | 10.2 | 7.4
Unrecognized tax benefits, income tax penalties and interest expense | (6.1) | 2.8 | (1.3)
Unrecognized tax benefits, reduction resulting from lapse of applicable statute of limitations | 1.5 |  |
Expected cash payment related to settlement of IRS appeals |  | 4.1 | 9.5
Unrecognized tax benefits, decrease resulting from cash and non-cash settlements with taxing authorities | $ 8.4 |  |

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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 Amount of total decrease in unrecognized tax benefits resulting from both cash and non-cash settlements with taxing authorities. + 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 The gross amount of increases 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 Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: 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 2: 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 Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: 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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