Balance Sheet Details (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 29, 2012 M	Dec. 31, 2011	Sep. 29, 2012
Inventory, Net [Abstract]
Purchased parts and assemblies	$ 48,660		$ 46,526
Work-in-process	65,403		60,171
Finished goods	54,939		53,416
Total inventories	169,002		160,113
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid and refundable income taxes	9,994		20,634
Other Taxes Receivable	28,609		25,607
Prepaid expenses and other	17,008		15,489
Total prepaid expenses and other assets	55,611		61,730
Other Assets, Noncurrent Disclosure [Abstract]
Assets related to deferred compensation arrangements	22,450		21,990
Deferred tax assets	39,189		37,160
Other assets	5,657		4,879
Total other assets	67,296		64,029
Other Liabilities, Current [Abstract]
Accrued payroll and benefits	28,013		28,100
Deferred income	17,027		17,465
Reserve for warranty	18,510		17,442
Accrued expenses and other	11,613		10,445
Other taxes payable	22,673		15,457
Customer deposits	3,703		1,830
Total other current liabilities	101,539		90,739
Product Warranties Disclosures [Abstract]
Weighted average warranty period (months)	15
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning balance	17,442	16,704
Additions related to current period sales	5,777	6,374
Warranty costs incurred in the current period	(6,040)	(7,249)
Accruals resulting from acquisition	1,735	0
Product Warranty Accrual, Currency Translation, Increase (Decrease)	(404)	206
Ending balance	18,510	16,035
Other Liabilities, Noncurrent [Abstract]
Long-term taxes payable	19,695		21,281
Deferred compensation	23,286		22,816
Deferred tax liabilities	13,676		726
Deferred income	2,303		2,191
Asset retirement obligations	2,021		2,029
Other long-term liabilities	6,288		6,283
Total other long-term liabilities	$ 67,269		$ 55,326