Summary Of Significant Accounting Policies (Notional Amounts Of Outstanding Forward Contracts) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Fair value of our forward contracts	$ 124,434	$ 133,903
Canadian/U.S. Dollar [Member]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	41,852	54,133
Euro/U.S. Dollar [Member]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	50,902	53,716
Chinese Renminbi/U.S. Dollar [Member]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	0	3,666
Japanese Yen/U.S. Dollar [Member]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	6,496	13,415
Swiss Franc/U.S. Dollar [Member]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	9,678	0
All Other [Member]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	$ 15,506	$ 8,973