Long-Term Debt (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended			12 Months Ended
	Dec. 30, 2012	Dec. 25, 2011	Dec. 29, 2013	Dec. 29, 2013 Notes 6.35% Due 2040 [Member]	Dec. 30, 2012 Notes 6.35% Due 2040 [Member]	Dec. 29, 2013 Notes 6.125% Due 2014 [Member]	Dec. 30, 2012 Notes 6.125% Due 2014 [Member]	Dec. 29, 2013 Notes 6.30% Due 2017 [Member]	Dec. 30, 2012 Notes 6.30% Due 2017 [Member]	Dec. 29, 2013 Debentures 6.60% Due 2028 [Member]	Dec. 30, 2012 Debentures 6.60% Due 2028 [Member]
Debt Instrument [Line Items]
Carrying Cost	$ 1,396,421		$ 1,388,285	$ 500,000	$ 500,000	$ 428,390	$ 436,526	$ 350,000	$ 350,000	$ 109,895	$ 109,895
Carrying Cost, Current	0		428,390
Carrying Cost, Non-Current	1,396,421		959,895
Long-term debt, fair value	1,600,212		1,487,204	532,750	615,650	435,838	455,175	400,050	399,700	118,566	129,687
Fair Value, Current	0		435,838
Fair Value, Non-Current	1,600,212		1,051,366
Interest rate on long-term debt (in hundredths)				6.35%	6.35%	6.125%	6.125%	6.30%	6.30%	6.60%	6.60%
Long-term debt, principal amount	1,384,895		1,384,895	500,000	500,000	425,000	425,000	350,000	350,000	109,895	109,895
Maturity Date				2040	2040	2014	2014	2017	2017	2028	2028
Adjustments included in carrying costs related to interest rate swaps	11,526		3,390
Range of interest rate adjustment dependent on the degree of decrease of the Company's credit rating, minimum (in hundredths)								0.25%	0.25%
Range of interest rate adjustment dependent on the degree of decrease of the Company's credit rating, maximum (in hundredths)								2.00%	2.00%
Aggregate Amount of Long-Term Debt Maturing in Next 5 Years			775,000
Derivative [Line Items]
Gain (loss) on interest rate swaps	$ 3,191	$ 15,511