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Income Taxes (Details 3) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Movement in uncertain tax positions |  |  |
Uncertain tax positions at the beginning of the period | $ 14.7 | $ 14.9 | $ 36.1
Gross increase - tax position in prior periods | 0.3 | 1.3 | 0.7
Gross decrease - tax position in prior periods | (0.8) | (0.8) | (19.1)
Gross increase - current period tax position | 0.1 |  |
Settlements | (0.4) | (0.9) | (2.2)
Lapse in statute of limitations | (0.1) | (0.3) | (0.5)
Foreign exchange | 0.2 | 0.5 | (0.1)
Uncertain tax positions at the end of the period | 14.0 | 14.7 | 14.9
Interest and penalties included within uncertain tax positions | 2.7 |  |
Impact of uncertain tax positions on effective tax rate, if recognized | $ 14.0 |  |

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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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