Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Tax expense at statutory rates	$ 205,819	$ 205,698	$ 164,393
State income tax, net of federal benefit	17,502	13,856	11,439
Tax credits	(18,683)	(1,510)	(5,520)
Unrecognized tax benefit (including interest)	(20)	(12,832)	102
Permanent differences	(14,760)	(19,900)	(2,472)
Other, net	(158)	5,164	(4,875)
Total income tax expense	$ 189,700	$ 190,476	$ 163,067