Derivative Financial Instruments (Schedule Of Net Notional Foreign Currency Forward Contracts Outstanding) (Details) In Thousands, unless otherwise specified	Sep. 30, 2012 AUD	Sep. 30, 2012 CAD	Sep. 30, 2012 CHF	Sep. 30, 2012 CNY	Sep. 30, 2012 EUR (€)	Sep. 30, 2012 GBP (£)	Sep. 30, 2012 HKD	Sep. 30, 2012 INR	Sep. 30, 2012 JPY (¥)	Sep. 30, 2012 SGD
Summary of Derivative Instruments [Abstract]
Net notional foreign currency forward contracts outstanding	16,513	5,238	14,092	5,798	€ 26,464	£ 32,481	56,583	40,146	¥ 278,299	9,316