Inventories (Schedule Of Inventories) (Details) (USD $)	6 Months Ended			3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Sep. 28, 2013	Dec. 28, 2013 Juniper Networks [Member]
Inventory, Net [Abstract]
Raw materials	$ 328,784,000		$ 288,559,000
Work-in-process	71,613,000		57,883,000
Finished goods	61,812,000		57,578,000
Inventory, net	462,209,000		404,020,000
Customer Deposits Related to Inventory [Line Items]
Customer deposits related to inventory	40,300,000		51,600,000
Customer deposits	$ (25,448,000)	$ 60,555,000		$ 11,000,000