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Share-Based Compensation (Tables) | 6 Months Ended
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Sep. 26, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of Share Option Activity | The following table summarizes the share option activity during the six months ended September 26, 2015:
| Number of Options |  | Weighted Average Exercise price
Outstanding at March 28, 2015 | 7,187,003 |  |  | $ | 23.14 |
Granted | 513,864 |  |  | $ | 47.09 |
Exercised | (809,725 | ) |  | $ | 7.29 |
Canceled/forfeited | (130,838 | ) |  | $ | 28.47 |
Outstanding at September 26, 2015 | 6,760,304 |  |  | $ | 26.76 |
Assumptions Used to Estimate Fair Value of Options | The following table represents assumptions used to estimate the fair value of options:
| Three Months Ended |  | Six Months Ended
| September 26 2015 |  | September 27 2014 |  | September 26 2015 |  | September 27 2014
Expected dividend yield | 0.0 | % |  | 0.0 | % |  | 0.0 | % |  | 0.0 | %
Volatility factor | 30.9 | % |  | 33.1 | % |  | 31.1 | % |  | 33.3 | %
Weighted average risk-free interest rate | 1.5 | % |  | 1.6 | % |  | 1.6 | % |  | 1.5 | %
Expected life of option | 4.75 years |  |  | 4.75 years |  |  | 4.75 years |  |  | 4.75 years |
Summary of Restricted Share and Restricted Share Unit Activity | The following table summarizes the restricted share activity during the six months ended September 26, 2015:
| Restricted Shares
| Number of Unvested Restricted Shares |  | Weighted Average Grant Date Fair Value
Unvested at March 28, 2015 | 770,592 |  |  | $ | 68.77 |
Granted | — |  |  | $ | — |
Vested | (148,691 | ) |  | $ | 81.00 |
Canceled/forfeited | (20,975 | ) |  | $ | 72.67 |
Unvested at September 26, 2015 | 600,926 |  |  | $ | 65.60 |
The following table summarizes the restricted share unit activity during the six months ended September 26, 2015:
| Service-based |  | Performance-based
| Number of Restricted Share Units |  | Weighted Average Grant Date Fair Value |  | Number of Restricted Share Units |  | Weighted Average Grant Date Fair Value
Unvested at March 28, 2015 | 35,940 |  |  | $ | 66.26 |  |  | 317,201 |  |  | $ | 76.69 |
Granted | 998,942 |  |  | $ | 46.54 |  |  | 287,476 |  |  | $ | 47.10 |
Vested | (10,684 | ) |  | $ | 56.16 |  |  | — |  |  | $ | — |
Canceled/forfeited | (15,619 | ) |  | $ | 46.58 |  |  | — |  |  | $ | — |
Unvested at September 26, 2015 | 1,008,579 |  |  | $ | 47.14 |  |  | 604,677 |  |  | $ | 62.62 |
Summary of Compensation Expense Attributable to Share-Based Compensation | The following table summarizes compensation expense attributable to share-based compensation for the three months and six months ended September 26, 2015 and September 27, 2014 (in thousands):
| Three Months Ended |  | Six Months Ended
| September 26, 2015 |  | September 27, 2014 |  | September 26, 2015 |  | September 27, 2014
Share-based compensation expense | $ | 13,358 |  |  | $ | 13,425 |  |  | $ | 25,864 |  |  | $ | 21,579 |
Tax benefits related to share-based compensation expense | $ | 5,279 |  |  | $ | 4,843 |  |  | $ | 10,274 |  |  | $ | 7,844 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + 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 (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&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 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + 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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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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