Long-term Debt (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended
	Oct. 01, 2015	Dec. 31, 2015	Sep. 30, 2015	Sep. 30, 2014
Balance of unamortized debt issuance costs		$ 5,221	$ 5,521
2008 Note Purchase Agreement [Member]
Issuance Date		Oct. 01, 2008
Series C Notes [Member]
Principal Payment Amount	$ 50,000
2009 Note Purchase Agreement [Member]
Issuance Date		Apr. 01, 2009
2013 Note Purchase Agreement [Member]
Issuance Date		Oct. 01, 2013
Face Amount		$ 250,000
Series J Notes [Member]
Variable interest rate		1.62%
First Closing Notes [Member]
Issuance Date		Oct. 01, 2013
Second Closing Notes [Member]
Issuance Date		Nov. 15, 2013
Other Foreign Short-term Borrowings [Member]
Outstanding borrowings		$ 0
Chinese Credit Facility [Member]
Line of Credit Facility, Expiration Date		Sep. 01, 2016
Line of Credit Facility, Maximum Borrowing Capacity		$ 22,700		$ 22,700
Outstanding borrowings		$ 0
Chinese Credit Facility, RMB Denominated Loan [Member]
Variable Rate Basis		interest at the prevailing interest rate offered by the People's Bank of China on the date of borrowing, plus a margin equal to 15% of that prevailing rate
Chinese Credit Facility, USD Denominated Loan [Member]
Variable Rate Basis		interest at the lender's cost of borrowing rate at the date of borrowing, plus 3%
Revolving Credit Agreement [Member]
Variable Rate Basis		LIBOR
Line of Credit Facility, Expiration Date		Apr. 01, 2020
Line of Credit Facility, Maximum Borrowing Capacity		$ 1,000,000
Outstanding borrowings		$ 437,000	$ 350,000
Credit facility effective interest rate on outstanding borrowing		1.67%	1.44%
Revolving Credit Agreement [Member] | Minimum [Member]
Basis Spread On Variable Rate		0.85%
Revolving Credit Agreement [Member] | Maximum [Member]
Basis Spread On Variable Rate		1.65%