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Share Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2017
Share-based Compensation [Abstract] |
Stock Options | The following table summarizes information concerning stock option grants during the first nine months of fiscal 2017 and 2016:
| Fiscal nine months ended
| September 30, 2017 |  | September 24, 2016
Stock options granted | 1,619,280 |  |  | 1,134,121 |
Weighted average exercise price | $ | 72.16 |  |  | $ | 86.41 |
Weighted average fair value per option | $ | 14.57 |  |  | $ | 19.62 |
Restricted Stock Units | The following table summarizes information concerning restricted stock unit grants during the first nine months of fiscal 2017 and 2016:
| Fiscal nine months ended
| September 30, 2017 |  | September 24, 2016
Restricted stock units granted | 85,049 |  |  | 59,019 |
Weighted average fair value per share | $ | 66.34 |  |  | $ | 84.25 |

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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=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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