Employee Benefit Plans (Defined Contribution Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 01, 2017	Apr. 02, 2016	Apr. 01, 2017	Apr. 02, 2016
Defined Contribution Plan Disclosure
Defined contribution plan expense	$ 5,058	$ 4,830	$ 10,088	$ 9,909
U.S.
Defined Contribution Plan Disclosure
Defined contribution plan expense	3,586	3,359	7,256	6,800
Non-U.S.
Defined Contribution Plan Disclosure
Defined contribution plan expense	$ 1,472	$ 1,471	$ 2,832	$ 3,109