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Quarterly Results (Tables) | 12 Months Ended
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Dec. 31, 2014
Quarterly Results [Abstract] |
Quarterly data | The following table sets forth selected unaudited quarterly data for the periods shown as revised (U.S. dollars in millions, except per share amounts):
|  | 2013 |  |  | 2014 |
|  | 1st Quarter |  |  | 2nd Quarter |  |  | 3rd Quarter |  |  | 4th Quarter |  |  | 1st Quarter |  |  | 2nd Quarter |  |  | 3rd Quarter |  |  | 4th Quarter |
Revenue |  | $ | 541.3 |  |  | $ | 671.3 |  |  | $ | 908.3 |  |  | $ | 1,055.8 |  |  | $ | 671.1 |  |  | $ | 650.0 |  |  | $ | 638.8 |  |  | $ | 609.6 |
Gross profit |  |  | 451.3 |  |  |  | 560.0 |  |  |  | 768.5 |  |  |  | 891.1 |  |  |  | 564.4 |  |  |  | 494.0 |  |  |  | 529.5 |  |  |  | 503.1 |
Operating income |  |  | 82.6 |  |  |  | 114.6 |  |  |  | 168.3 |  |  |  | 188.6 |  |  |  | 101.2 |  |  |  | 54.7 |  |  |  | 105.0 |  |  |  | 91.3 |
Net income |  |  | 54.3 |  |  |  | 74.4 |  |  |  | 110.9 |  |  |  | 125.3 |  |  |  | 54.9 |  |  |  | 19.5 |  |  |  | 68.3 |  |  |  | 46.5 |
Net income per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  | 0.93 |  |  |  | 1.27 |  |  |  | 1.89 |  |  |  | 2.13 |  |  |  | 0.93 |  |  |  | 0.33 |  |  |  | 1.15 |  |  |  | 0.79 |
Diluted |  |  | 0.90 |  |  |  | 1.22 |  |  |  | 1.80 |  |  |  | 2.02 |  |  |  | 0.90 |  |  |  | 0.32 |  |  |  | 1.12 |  |  |  | 0.77 |

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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=35737889&loc=d3e1280-108306 + Details
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