Inventories (Details) (USD $)	Sep. 28, 2013	Sep. 29, 2012
Inventory, Net [Abstract]
Raw materials	$ 288,559,000	$ 337,657,000
Work-in-process	57,883,000	47,182,000
Finished goods	57,578,000	72,852,000
Inventory, net	404,020,000	457,691,000
Inventory [Line Items]
Customer deposits related to inventory	51,600,000	34,800,000
Juniper Networks [Member]
Inventory [Line Items]
Customer deposits related to inventory	$ 11,000,000