Percentage of compensation withheld by employees to purchase common stock.

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Percentage of vesting per year.

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No definition available.

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- Definition

Share based compensation arrangement by share based payment award maximum value of shares per employee.

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- Definition

Share based compensation arrangement by share based payment award options becoming exercisable.

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Look Back Commencement Period

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Purchase Period

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No definition available.

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- Definition

Stockholders' Equity And Stock-Based Compensation [Line Items]

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- Definition

Terms for issuance of stock.

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No definition available.

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- Definition

Year end stock price.

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No definition available.

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 30
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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

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- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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

Unrecognized cost of unvested share-based compensation awards.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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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.

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

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

+ References

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- Definition

The highest quantity of shares an employee can purchase under the plan per period.

+ References

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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

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

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

The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

No definition available.

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Stockholders' Equity And Stock-Based Compensation (Narrative) (Details) - USD ($)		3 Months Ended			6 Months Ended		37 Months Ended	41 Months Ended
	Jan. 25, 2016	Apr. 01, 2016	Jan. 01, 2016	Mar. 27, 2015	Apr. 01, 2016	Mar. 27, 2015	Oct. 31, 2010	Mar. 28, 2014	Sep. 25, 2015
Stockholders' Equity And Stock-Based Compensation [Line Items]
Options outstanding to purchase									8,835,000
Year end stock price					$ 43.37
Percentage of vesting per year							50.00%
Common stock, dividends declared (in dollars per share)	$ 0.12	$ 0.12		$ 0.10	$ 0.24	$ 0.20
Remaining authorization to purchase additional shares		$ 75,900,000			$ 75,900,000
Restricted Stock Units (RSUs) [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Stock options expected to vest		84,500,000			$ 84,500,000
Employee stock options expected to be recognized over a weighted-average period					2 years 8 months 12 days
Executive Officer [Member] \| Performance-Based Stock Options [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures			419,623
Employees and Officers [Member] \| Restricted Stock Units (RSUs) [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Options vesting period					4 years
Awards Granted Prior to November 2010 [Member] \| Directors [Member] \| Restricted Stock Units (RSUs) [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Options vesting period							3 years	1 year
Awards Granted After November 2010 [Member] \| Directors [Member] \| Restricted Stock Units (RSUs) [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Options vesting period							2 years
Awards Granted Under 2005 Stock Plan Prior To February 2011 [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Terms for issuance of stock					2
Awards Granted Under 2005 Stock Plan From February 2011 [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Terms for issuance of stock					1.6
Employee Stock Purchase Plan [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Percentage of compensation withheld by employees to purchase common stock					10.00%
Common stock purchase price determined over percentage of closing price					15.00%
Employee Stock Option [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Stock options expected to vest		$ 41,200,000			$ 41,200,000
Employee stock options expected to be recognized over a weighted-average period					2 years 6 months
Class A Common Stock [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Common stock, shares authorized (shares)		500,000,000			500,000,000				500,000,000
Common stock, shares issued (shares)		53,265,096			53,265,096				50,291,426
Common stock, shares outstanding (shares)		53,265,096			53,265,096				50,291,426
Class A Common Stock [Member] \| 2005 Stock Plan. [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Shares authorized under plan		29,000,000			29,000,000
Options outstanding to purchase		10,447,000			10,447,000
Weighted average remaining contractual life					7 years 3 months 18 days
Options vested and exercisable		5,451,000			5,451,000
Class A Common Stock [Member] \| Employee Stock Purchase Plan [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Maximum value of common stock available for eligible employees					$ 25,000
Maximum number of common stock available for eligible employees					1,000
Purchase period					6 months
Look back commencement period					1 year
Class B Common Stock [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Common stock, shares authorized (shares)		500,000,000			500,000,000				500,000,000
Common stock, shares issued (shares)		46,790,462			46,790,462				50,743,311
Common stock, shares outstanding (shares)		46,790,462			46,790,462				50,743,311
Options Granted Prior To June 2008 [Member] \| Employee Stock Option [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Options expiration period					10 years
Options Granted From June 2008 [Member] \| Employee Stock Option [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Options vesting period					4 years
Percentage of stock option becoming exercisable subjected to date of grant					25.00%