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Share Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2018
Share-based Compensation [Abstract] |
Stock Options | The following table summarizes information concerning stock option grants during the first six months of fiscal 2018 and 2017:
| Fiscal six months ended
| June 30, 2018 |  | July 1, 2017
Stock options granted | 664,686 |  |  | 1,557,681 |
Weighted average exercise price | $ | 67.27 |  |  | $ | 72.76 |
Weighted average grant date fair value per option | $ | 14.86 |  |  | $ | 14.68 |
Restricted Stock Units | The following table summarizes information concerning restricted stock unit and performance-based restricted share unit grants during the first six months of fiscal 2018 and 2017:
| Fiscal six months ended
| June 30, 2018 |  | July 1, 2017
Restricted stock units granted | 298,249 |  |  | 82,835 |
Performance-based restricted share units granted | 39,330 |  |  | — |
Weighted average grant date fair value per share | $ | 63.37 |  |  | $ | 66.70 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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