Stockholders' Equity (Schedule Of Stock Option Activity) (Details) - $ / shares shares in Thousands	12 Months Ended
	Oct. 01, 2016	Sep. 26, 2015
Stockholders' Equity [Abstract]
Options outstanding, beginning of period	11,351	10,504
Options granted, number of shares	2,805	2,839
Options exercised, number of shares	(2,061)	(1,929)
Options forfeited or cancelled, number of shares	(379)	(63)
Options outstanding, end of period, number of shares	11,716	11,351
Options outstanding, beginning of period, weighted average exercise price	$ 17.71	$ 13.13
Options granted, weighted average exercise price	30.27	28.78
Options exercised, weighted average exercise price	12.57	9.07
Options forfeited or cancelled, weighted average exercise price	23.37	17.59
Options outstanding, end of period, weighted average exercise price	21.44	17.71
Optional price range at end of period, lower limit	3.04	3.04
Optional price range at end of period, upper limit	$ 45.62	$ 33.91
Options exercisable at end of period	4,573	4,786
Options available for grant at period end	4,695	7,500
Weighted average fair value of options granted during period	$ 8.68	$ 9.51