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16. Quarterly Financial Data (Tables) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Data [Abstract] |
Schedule of Quarterly Financial Data [Table Text Block] |
|  | First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
2018 |  |  |  |  |  |  |  |
Net sales |  | $ | 551.5 |  |  | $ | 575.9 |  |  | $ | 545.1 |  |  | $ | 616.9 |
Gross profit |  | 302.2 |  |  | 301.7 |  |  | 286.7 |  |  | 332.6 |
Net income (loss) |  | 656.8 |  |  | 268.0 |  |  | 269.3 |  |  | (828.5 | )
Basic earnings (loss) per share |  | $ | 22.05 |  |  | $ | 8.99 |  |  | $ | 9.02 |  |  | $ | (27.73 | )
Diluted earnings (loss) per share |  | $ | 21.77 |  |  | $ | 8.87 |  |  | $ | 8.89 |  |  | $ | (27.73 | )
2017 |  |  |  |  |  |  |  |
Net sales |  | $ | 500.1 |  |  | $ | 504.7 |  |  | $ | 534.1 |  |  | $ | 621.3 |
Gross profit |  | 270.1 |  |  | 273.4 |  |  | 299.0 |  |  | 345.2 |
Net income |  | 12.4 |  |  | 5.0 |  |  | 22.1 |  |  | 82.7 |
Basic earnings per share |  | $ | 0.42 |  |  | $ | 0.17 |  |  | $ | 0.74 |  |  | $ | 2.78 |
Diluted earnings per share |  | $ | 0.41 |  |  | $ | 0.17 |  |  | $ | 0.73 |  |  | $ | 2.75 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109225645&loc=d3e1280-108306 + Details
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