Employee Stock Benefit Plans (Schedule Of Stock Options Activity) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 28, 2012
Employee Stock Ownership Plan (ESOP), Shares in ESOP [Abstract]
Options, Outstanding at beginning of year	9,901
Options, Granted	1,505
Options, Exercised	(2,818)
Options, Cancelled	(105)
Options, Outstanding at end of year	8,483
Options, Available for grant	10,444
Weighted average exercise price, Outstanding at beginning of year	$ 27.48
Weighted average exercise price, Granted	$ 50.12
Weighted average exercise price, Exercised	$ 20.12
Weighted average exercise price, Cancelled	$ 34.10
Weighted average exercise price, Outstanding at end of year	$ 33.85