Employee Stock Plans (Schedule Of Share-Based Compensation Expense) (Details) (USD $) In Thousands	3 Months Ended				9 Months Ended
	Jul. 01, 2011		Jul. 02, 2010		Jul. 01, 2011		Jul. 02, 2010
Share-based compensation expense	$ 8,800		$ 10,700		$ 34,900		$ 26,900
Taxes on earnings	(2,942)		(3,849)		(11,827)		(9,627)
Net decrease in net earnings	5,865		6,846		23,084		17,315
Increase (decrease) on cash flows from operating activities	(4,282)	[1]	(3,506)	[1]	(21,768)	[1]	(8,972)	[1]
Increase (decrease) on Cash flows from financing activities	4,282	[1]	3,506	[1]	21,768	[1]	8,972	[1]
Cost Of Revenues - Product [Member]
Share-based compensation expense	1,055		956		3,013		2,557
Cost Of Revenues - Service Contracts And Other [Member]
Share-based compensation expense	392		638		1,610		1,815
Research And Development [Member]
Share-based compensation expense	1,174		1,354		4,485		3,271
Selling, General And Administrative [Member]
Share-based compensation expense	$ 6,186		$ 7,747		$ 25,803		$ 19,299

[1] Amounts represent excess tax benefits from share-based compensation.