Earnings Per Share Disclosure [Line Items]

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Option Grants In Period Weighted Average Exercise Price

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Options Annual Vesting Percentage

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- Definition

Employee tenure requirement to participate in plan.

+ References

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Antidilution

-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Diluted Earnings Per Share

-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Contingent Stock Agreement

-URI http://asc.fasb.org/extlink&oid=6508534

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

Exercise or strike price stated in the contract for options indexed to the issuer's equity shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 480

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(1)

-URI http://asc.fasb.org/extlink&oid=6940734&loc=d3e22047-110879

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 40

-Section 50

-Paragraph 5

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=6445032&loc=d3e90205-114008

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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 (a)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Discount rate from fair value on purchase date that participants pay for shares.

+ References

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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- Definition

The addition or reduction in the number of reserved shares that could potentially be issued under the option plan attributable to reasons other than grants, exercises, forfeitures, and expirations during the reporting period.

+ 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

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Net Income per Share - Additional Information (Detail) - $ / shares		3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 01, 2008	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014	Dec. 26, 2009
Employee Stock Compensation Plan
Earnings Per Share Disclosure [Line Items]
Vesting period				5 years
Investment Share Program \| Employee Stock Compensation Plan
Earnings Per Share Disclosure [Line Items]
Requirement tenure of employee for investment share program, purchase shares at discount				2 years
Minimum \| Investment Share Program \| Employee Stock Compensation Plan
Earnings Per Share Disclosure [Line Items]
Requirement tenure of employee for investment share program				1 year
Discount from current market value				20.00%
Maximum \| Investment Share Program \| Employee Stock Compensation Plan
Earnings Per Share Disclosure [Line Items]
Discount from current market value				40.00%
Chief Executive Officer
Earnings Per Share Disclosure [Line Items]
Options granted in period exercise price				$ 167.62	$ 152.33
Stock option outstanding		452,319	603,092	452,319	603,092
Chief Executive Officer \| Market Based Stock Option
Earnings Per Share Disclosure [Line Items]
Vesting period	5 years
Options granted in period	753,864
Vesting percentage per year	20.00%
Stock price	$ 42.00
Chief Executive Officer \| Minimum
Earnings Per Share Disclosure [Line Items]
Options granted in period exercise price	37.65
Chief Executive Officer \| Maximum
Earnings Per Share Disclosure [Line Items]
Options granted in period exercise price	$ 70
Common Class A
Earnings Per Share Disclosure [Line Items]
Antidilutive securities excluded from computation of earnings per share		6,000	2,000	5,000	1,000
Common Class A \| Performance-Based Options
Earnings Per Share Disclosure [Line Items]
Common Stock that were excluded from computing diluted net income per common share				37,000	47,000
Options granted in period				7,000
Common Class A \| Performance-Based Options \| Two Key Employees
Earnings Per Share Disclosure [Line Items]
Options granted in period						30,000