Debt (Senior Notes) (Details) (USD $)	0 Months Ended	3 Months Ended		9 Months Ended		0 Months Ended		3 Months Ended	12 Months Ended		0 Months Ended	12 Months Ended
	Sep. 25, 2013	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Jan. 31, 2013 3.85% Senior Notes Due February 1,2023 [Member]	Jan. 17, 2006 6.125% Notes, Payable January 15, 2016 [Member]	Mar. 31, 2012 6.125% Notes, Payable January 15, 2016 [Member]	Dec. 31, 2009 6.125% Notes, Payable January 15, 2016 [Member]	Sep. 28, 2013 6.125% Notes, Payable January 15, 2016 [Member]	Apr. 16, 2012 7.20% Senior Notes, Payable April 15, 2012 [Member]	Dec. 31, 2002 7.20% Senior Notes, Payable April 15, 2012 [Member]
Debt Instrument [Line Items]
Aggregate principal amount of debts						$ 600,000,000	$ 900,000,000					$ 400,000,000
Interest rate percentage						3.85%	6.125%					7.20%
Payment of financing costs	1,836,000					6,000,000
Notes payable, maturity date							Jan. 15, 2016					Apr. 15, 2012
Increase in interest rate from rating agency downgrade							0.25%
Maximum increase in interest rate per agency from rating agency downgrade							1.00%
Aggregate amount of increase in interest rate from rating agency downgrade									0.75%
Aggregate amount of decrease in interest rate from rating agency downgrade								0.50%
Increase in interest expense per quarter for .25% increase in notes per $100,000 of outstanding notes		25,630,000	17,969,000	70,098,000	59,311,000		63,000
Incremental increase in outstanding notes							100,000,000
Current rate in effect										6.375%
Remaining outstanding senior notes repaid												63,730,000
Repurchase price as percentage of principal amount of senior notes												102.72%
Company repaid principal amount											336,270,000
Debt instruments interest accrued											$ 12,106,000