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Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Accounting Policies |
Reconciliation of the beginning and ending amount of unrecognized tax benefits |
|  | (in millions) |
Balance at January 1, 2017 |  | $ | 5.1 |
Increases related to prior year tax positions |  |  | 2.4 |
Decreases related to statute expirations |  |  | (0.3) |
Settlements |  |  | (0.2) |
Currency movement |  |  | 0.7 |
Balance at December 31, 2017 |  | $ | 7.7 |
Summary of reconciliation of the calculation of earnings per share |
|  | Year Ended December 31, |
|  | 2017 |  | 2016 |  | 2015 |
|  |  |  |  |  |  | Per |  |  |  |  |  |  | Per |  |  |  |  |  |  | Per |
|  | Net |  |  |  | Share |  | Net |  |  |  | Share |  | Net |  |  |  | Share |
|  | Income |  | Shares |  | Amount |  | Income |  | Shares |  | Amount |  | Loss |  | Shares |  | Amount |
|  | (Amounts in millions, except per share information) |
Basic EPS |  | $ | 73.1 |  | 34.4 |  | $ | 2.12 |  | $ | 84.2 |  | 34.4 |  | $ | 2.45 |  | $ | (112.9) |  | 34.9 |  | $ | (3.24) |
Dilutive securities, principally common stock options |  |  | — |  | — |  |  | — |  |  | — |  | 0.1 |  |  | (0.01) |  |  | — |  | — |  |  | — |
Diluted EPS |  | $ | 73.1 |  | 34.4 |  | $ | 2.12 |  | $ | 84.2 |  | 34.5 |  | $ | 2.44 |  | $ | (112.9) |  | 34.9 |  | $ | (3.24) |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32840-109319 + Details
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