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Restructuring Charges (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Apr. 04, 2015	Sep. 30, 2014	Mar. 29, 2014	Apr. 04, 2015	Mar. 29, 2014
Restructuring Reserve [Roll Forward]
October 1, 2014				$ 26,370us-gaap_RestructuringReserve
Charge to operations	38,487us-gaap_RestructuringCharges	26,800us-gaap_RestructuringCharges	0us-gaap_RestructuringCharges	38,232us-gaap_RestructuringCharges	1,067us-gaap_RestructuringCharges
Cash disbursements				(22,667)us-gaap_PaymentsForRestructuring
Foreign exchange impact				(1,178)
Accrual, April 4, 2015	40,757us-gaap_RestructuringReserve	26,370us-gaap_RestructuringReserve		40,757us-gaap_RestructuringReserve
Employee Severance and Related Benefits
Restructuring Reserve [Roll Forward]
October 1, 2014				25,835
Charge to operations				38,232
Cash disbursements				(22,532)
Foreign exchange impact				(1,173)
Accrual, April 4, 2015	40,362			40,362
Facility Closures and Related Costs
Restructuring Reserve [Roll Forward]
October 1, 2014				535
Charge to operations				0
Cash disbursements				(135)
Foreign exchange impact				(5)
Accrual, April 4, 2015	$ 395			$ 395