Income Taxes (Components Of Income Before Taxes) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jul. 01, 2012	Apr. 01, 2012	Dec. 31, 2011	Sep. 25, 2011	Jun. 26, 2011	Mar. 27, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Expense (Benefit) [Abstract]
Domestic									$ 946,592,000	$ 782,896,000	$ 377,416,000
Foreign									14,920,000	9,768,000	13,053,000
Income before provision for income taxes	$ 106,400	$ 207,100	$ 382,100	$ 265,900	$ 83,600	$ 233,900	$ 292,300	$ 182,900	$ 961,512,000	$ 792,664,000	$ 390,469,000