Stockholders' Equity And Stock-Based Compensation (Narrative) (Details) (USD $)	1 Months Ended	3 Months Ended		12 Months Ended					12 Months Ended			12 Months Ended		7 Months Ended	9 Months Ended	3 Months Ended	7 Months Ended	12 Months Ended				0 Months Ended		3 Months Ended		12 Months Ended	1 Months Ended			3 Months Ended		12 Months Ended			7 Months Ended	12 Months Ended			3 Months Ended
	Nov. 30, 2009	Dec. 27, 2013	Dec. 28, 2012	Sep. 27, 2013	Dec. 27, 2013 Class A Common Stock [Member]	Sep. 27, 2013 Class A Common Stock [Member]	Dec. 27, 2013 Class B Common Stock [Member]	Sep. 27, 2013 Class B Common Stock [Member]	Sep. 27, 2013 2000 Stock Incentive Plan [Member] Class B Common Stock [Member]	Sep. 27, 2013 2005 Stock Plan. [Member] Class A Common Stock [Member]	Feb. 16, 2005 2005 Stock Plan. [Member] Class A Common Stock [Member]	Sep. 27, 2013 Awards Granted Under 2005 Stock Plan Prior To February 2011 [Member]	Sep. 27, 2013 Awards Granted Under 2005 Stock Plan From February 2011 [Member]	May 14, 2012 Employee Stock Purchase Plan [Member]	Jun. 29, 2012 Employee Stock Purchase Plan [Member]	Dec. 27, 2013 Employee Stock Purchase Plan [Member] Class A Common Stock [Member]	May 14, 2012 Employee Stock Purchase Plan [Member] Class A Common Stock [Member]	Sep. 27, 2013 Employee Stock Option [Member]	Sep. 27, 2013 Employee Stock Option [Member] Options Granted Prior To June 2008 [Member]	Sep. 27, 2013 Employee Stock Option [Member] Options Granted From June 2008 [Member]	Sep. 28, 2012 Employee Stock Option [Member] Options Granted From June 2008 [Member]	Dec. 21, 2012 Equity Award Modification [Member]	Dec. 11, 2012 Equity Award Modification [Member]	Dec. 27, 2013 Equity Award Modification [Member]	Dec. 28, 2012 Equity Award Modification [Member]	Sep. 27, 2013 Equity Award Modification [Member]	Feb. 29, 2012 Additional Stock Approved [Member]	Jul. 31, 2011 Additional Stock Approved [Member]	Jul. 31, 2010 Additional Stock Approved [Member]	Dec. 27, 2013 Equity Award Modification Restricted Stock Units [Member]	Dec. 28, 2012 Equity Award Modification Restricted Stock Units [Member]	Sep. 27, 2013 Equity Award Modification Restricted Stock Units [Member]	Sep. 27, 2013 Minimum [Member] Equity Award Modification [Member]	Sep. 27, 2013 Minimum [Member] Equity Award Modification Restricted Stock Units [Member]	May 14, 2012 Maximum [Member] Employee Stock Purchase Plan [Member] Class A Common Stock [Member]	Sep. 27, 2013 Maximum [Member] Equity Award Modification [Member]	Sep. 27, 2013 Maximum [Member] Equity Award Modification Restricted Stock Units [Member]	Sep. 27, 2013 Restricted Stock Units (RSUs) [Member]	Dec. 27, 2013 Employees and Officers [Member] Restricted Stock Units (RSUs) [Member]	Dec. 27, 2013 Awards Granted Prior to November 2010 [Member] Directors [Member] Restricted Stock Units (RSUs) [Member]	Dec. 27, 2013 Awards Granted After November 2010 [Member] Directors [Member] Restricted Stock Units (RSUs) [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Common stock, shares authorized (shares)					500,000,000	500,000,000	500,000,000	500,000,000			29,000,000.0
Common stock, shares issued (shares)					48,060,689	46,862,893	53,969,786	54,876,494
Common stock, shares outstanding (shares)					48,060,689	46,862,893	53,969,786	54,876,494														102,051,386
Shares authorized under plan									15,100,000
Options outstanding to purchase		8,245,000		6,385,000					100,000	8,100,000
Weighted average remaining contractual life		7 years 10 months 24 days							0 years 6 months	8 years
Terms for issuance of stock												2	1.6
Options vested and exercisable										3,100,000
Options vesting period									4 years											4 years	36 months												1 year	1 year		4 years	4 years		4 years	3 years	2 years
Options expiration period									10 years										10 years	10 years
Expiration period after termination of service																			3 months	3 months
Percentage of stock option becoming exercisable subjected to date of grant																				25.00%
Year end stock price				$ 38.38
Percentage of vesting per year				50.00%
Percentage of compensation withheld by employees to purchase common stock														10.00%
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
Common stock purchase price determined over percentage of closing price															15.00%
Overlapping offering period																1 year
Stock-based compensation expense capitalized		0	0
Stock options expected to vest																		54,900,000																				94,900,000
Employee stock options expected to be recognized over a weighted-average period																		3 years																				2 years 10 months 24 days
Common stock, dividends declared (in dollars per share)																							$ 4
Dividends, amount																						408,200,000
Total incremental charge																										7,900,000						11,900,000
Total incremental compensation cost																								400,000	3,100,000					800,000	100,000
Stock authorized for repurchase	250,000,000			900,000,000																							100,000,000	250,000,000	300,000,000
Remaining authorization to purchase additional shares				$ 104,400,000