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Taxes on income from continuing operations (Tables) | 6 Months Ended
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Jul. 02, 2017
Income Tax Disclosure [Abstract] |
Effective Income Tax Rate |
| Three Months Ended |  | Six Months Ended
| July 2, 2017 |  | June 26, 2016 |  | July 2, 2017 |  | June 26, 2016
Effective income tax rate | 13.4% |  | 11.9% |  | 7.4% |  | 8.8%

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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319 + Details
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