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Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2017
QUARTERLY FINANCIAL DATA (UNAUDITED) [Abstract] |
Schedule of Quarterly Financial Information [Table Text Block] |
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
2017 |  |  |  |  |  |  |  |  |  |  |
Net sales | $ | 594,567 |  |  | $ | 653,656 |  |  | $ | 698,799 |  |  | $ | 778,031 |
Gross profit | $ | 342,900 |  |  | $ | 374,917 |  |  | $ | 400,277 |  |  | $ | 455,219 |
Net earnings(1) | $ | 92,466 |  |  | $ | 101,580 |  |  | $ | 104,950 |  |  | $ | 76,976 |
Basic earnings per common share: |  |  |  |  |  |  |
Net earnings | $ | 3.57 |  |  | $ | 3.94 |  |  | $ | 4.10 |  |  | $ | 3.01 |
Weighted average number of common shares | 25,932,112 |  |  | 25,751,374 |  |  | 25,613,433 |  |  | 25,562,542 |
Diluted earnings per common share: |  |  |  |  |  |  |
Net earnings | $ | 3.48 |  |  | $ | 3.84 |  |  | $ | 3.99 |  |  | $ | 2.93 |
Weighted average number of common and common equivalent shares | 26,586,061 |  |  | 26,439,529 |  |  | 26,303,529 |  |  | 26,229,052 |
Market price per share: |  |  |  |  |  |  |
High | $ | 486.90 |  |  | $ | 601.16 |  |  | $ | 635.17 |  |  | $ | 689.11 |
Low | $ | 414.52 |  |  | $ | 473.87 |  |  | $ | 571.25 |  |  | $ | 606.80 |
(1) Provision for taxes for 2017 includes a provisional one-time charge of $72 million for the implementation of the Tax Cuts and Jobs Act. Of this amount, $59 million is expected to be paid over a period of up to eight years. The estimated charge may change with the finalization of implementation.
2016 |  |  |  |  |  |  |  |  |  |  |
Net sales | $ | 539,674 |  |  | $ | 608,286 |  |  | $ | 650,598 |  |  | $ | 709,699 |
Gross profit | $ | 299,907 |  |  | $ | 347,576 |  |  | $ | 369,494 |  |  | $ | 418,610 |
Net earnings | $ | 65,674 |  |  | $ | 79,588 |  |  | $ | 101,332 |  |  | $ | 137,776 |
Basic earnings per common share: |  |  |  |  |  |  |  |  |  |
Net earnings | $ | 2.44 |  |  | $ | 2.99 |  |  | $ | 3.84 |  |  | $ | 5.27 |
Weighted average number of common shares | 26,931,293 |  |  | 26,631,015 |  |  | 26,375,468 |  |  | 26,139,024 |
Diluted earnings per common share: |  |  |  |  |  |  |  |  |  |
Net earnings | $ | 2.40 |  |  | $ | 2.93 |  |  | $ | 3.77 |  |  | $ | 5.17 |
Weighted average number of common and common equivalent shares | 27,421,019 |  |  | 27,143,284 |  |  | 26,888,810 |  |  | 26,631,269 |
Market price per share: |  |  |  |  |  |  |  |  |  |
High | $ | 347.09 |  |  | $ | 385.50 |  |  | $ | 419.83 |  |  | $ | 429.91 |
Low | $ | 298.14 |  |  | $ | 347.76 |  |  | $ | 363.19 |  |  | $ | 397.73 |

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- Definition QUARTERLY FINANCIAL DATA (UNAUDITED) [Abstract] + References No definition available. + Details
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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/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=84173487&loc=d3e1280-108306 + Details
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