Income Taxes (Reconciliation Of The Provision For Income Taxes) (Details) - USD ($) $ in Thousands			12 Months Ended
	Dec. 22, 2017	Oct. 01, 2017	Sep. 29, 2018	Sep. 30, 2017	Oct. 01, 2016
Income Tax Disclosure [Abstract]
Domestic			$ 137,247	$ 77,007	$ 82,848
Foreign			46,590	104,704	90,012
Earnings before income taxes			$ 183,837	$ 181,711	$ 172,860
Federal statutory income tax rate	21.00%	35.00%	24.50%	35.00%	35.00%
Transition tax on foreign earnings			16.80%	0.00%	0.00%
Revaluation of deferred taxes			(6.00%)	0.00%	0.00%
Withholding taxes			4.00%	0.00%	0.00%
Reversal of indefinite reinvestment assertion			5.60%	0.00%	0.00%
R&D and foreign tax credits			(4.20%)	(3.80%)	(30.60%)
Divestiture impacts			0.00%	(3.20%)	0.00%
Foreign tax rates			(0.70%)	(2.40%)	(2.70%)
Equity-based compensation			(0.70%)	(1.20%)	0.00%
Export and manufacturing incentives			(0.30%)	(0.90%)	(1.00%)
Change in valuation allowance for deferred taxes			5.70%	(0.40%)	0.90%
Change in enacted tax rates			0.00%	0.00%	(0.90%)
Repatriation earnings			0.00%	0.00%	26.80%
State taxes, net of federal benefit			1.90%	0.40%	0.50%
Other			0.80%	(0.80%)	0.50%
Effective income tax rate			47.40%	22.70%	28.50%