Balance Sheet Details (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Sep. 29, 2012
Inventory, Net [Abstract]
Purchased parts and assemblies	$ 53,105		$ 46,526
Work-in-process	62,927		60,171
Finished goods	52,971		53,416
Total inventories	169,003		160,113
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid and refundable income taxes	20,221		20,634
Other Taxes Receivable	35,297		25,607
Prepaid expenses and other	13,135		15,489
Total prepaid expenses and other assets	68,653		61,730
Other Assets, Noncurrent Disclosure [Abstract]
Assets related to deferred compensation arrangements	23,059		21,990
Deferred tax assets	39,255		37,160
Other assets	5,827		4,879
Total other assets	68,141		64,029
Other Liabilities, Current [Abstract]
Accrued payroll and benefits	29,726		28,100
Deferred income	17,478		17,465
Reserve for warranty	18,074		17,442
Accrued expenses and other	11,431		10,445
Other taxes payable	24,312		15,457
Customer deposits	2,661		1,830
Total other current liabilities	103,682		90,739
Product Warranties Disclosures [Abstract]
Weighted average warranty period (months)	15 months
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning balance	17,442	16,704
Additions related to current period sales	18,739	22,291
Warranty costs incurred in the current period	(19,681)	(21,454)
Accruals resulting from acquisition	1,728	0
Product Warranty Accrual, Currency Translation, Increase (Decrease)	(154)	(177)
Ending balance	18,074	17,364
Other Liabilities, Noncurrent [Abstract]
Long-term taxes payable	15,526		21,281
Deferred compensation	24,189		22,816
Deferred tax liabilities	12,263		726
Deferred income	2,684		2,191
Asset retirement obligations	2,156		2,029
Other long-term liabilities	5,941		6,283
Total other long-term liabilities	$ 62,759		$ 55,326