Balance Sheet Details (Details) - USD ($) $ in Thousands	Sep. 29, 2018	Sep. 30, 2017
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid and refundable income taxes	$ 37,884	$ 28,712
Other taxes receivable	16,930	15,327
Prepaid expenses and other assets	30,266	26,229
Total prepaid expenses and other assets	85,080	70,268
Other Assets, Noncurrent Disclosure [Abstract]
Assets related to deferred compensation arrangements (see note 12)	37,370	31,008
Deferred tax assets	64,858	82,691
Other assets	9,521	12,942
Total other assets	111,749	126,641
Other Liabilities, Current [Abstract]
Accrued payroll and benefits	55,704	72,327
Accrued expenses and other	36,859	34,215
Warranty reserve (see note 2)	40,220	36,149
Current liabilities held for sale (see note 18)	0	7,021
Customer deposits	19,933	20,052
Deferred revenue	30,613	65,237
Total other current liabilities	183,329	235,001
Other Liabilities, Noncurrent [Abstract]
Long-term taxes payable	36,336	35,866
Deferred compensation (see note 12)	40,895	34,160
Deferred tax liabilities	26,339	45,373
Deferred revenue	5,091	4,765
Asset retirement obligations liability (see note 2)	4,529	5,382
Defined benefit plan liabilities (see note 13)	37,528	39,454
Other long-term liabilities	1,238	1,390
Total other long-term liabilities	$ 151,956	$ 166,390