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Quarterly Financial Data (Unaudited) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Data (Unaudited) | Quarterly Financial Data (Unaudited) The supplemental quarterly financial data are as follows:
| Quarters Ended
| March 31, 2018 |  | June 30, 2018 |  | September 29, 2018 |  | December 31, 2018
Net sales | $ | 2,412,202 |  |  | 2,577,014 |  |  | 2,545,800 |  |  | 2,448,618 |
Gross profit | 704,692 |  |  | 766,555 |  |  | 1,825,367 |  |  | 646,390 |
Net earnings | 208,766 |  |  | 196,586 |  |  | 227,013 |  |  | 229,339 |
Basic earnings per share | 2.80 |  |  | 2.64 |  |  | 3.03 |  |  | 3.07 |
Diluted earnings per share | 2.78 |  |  | 2.62 |  |  | 3.02 |  |  | 3.05 |
| Quarters Ended
| April 1, 2017 |  | July 1, 2017 |  | September 30, 2017 |  | December 31, 2017
Net sales | $ | 2,220,645 |  |  | 2,453,038 |  |  | 2,448,510 |  |  | 2,369,097 |
Gross profit | 680,353 |  |  | 779,136 |  |  | 783,301 |  |  | 753,624 |
Net earnings | 200,554 |  |  | 260,681 |  |  | 270,025 |  |  | 240,378 |
Basic earnings per share | 2.70 |  |  | 3.51 |  |  | 3.63 |  |  | 3.23 |
Diluted earnings per share | 2.68 |  |  | 3.48 |  |  | 3.61 |  |  | 3.21 |

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- References No definition available. + Details
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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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