Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016
Income Tax Contingency
Foreign Earnings Repatriated	$ 90,937
Foreign subsidiaries' undistributed earnings	923,602
Reductions as a result of lapse of statue of limitations	0
Accrued interest and penalties	567	$ 469
Additional interest expensed	106	$ 276
Foreign Tax Authority [Member]
Income Tax Contingency
Tax benefit carryforwards	15,300
Domestic Tax Authority [Member]
Income Tax Contingency
Tax benefit carryforwards	15,856
State and Local Jurisdiction [Member]
Income Tax Contingency
Tax benefit carryforwards	$ 3,388