Derivative Instruments and Hedging Activities (Details Textual) (USD $)	3 Months Ended	9 Months Ended
	Jun. 30, 2011	Jun. 30, 2011	Sep. 30, 2010
Derivative Instruments and Hedging Activities (Textuals) [Abstract]
Partially hedges forecasted export sales denominated in foreign currencies using forward and option contracts	one-year terms	one-year terms
Contracts entered by the company to hedge cash flows	0	0
Notional amounts outstanding foreign exchange contracts	$ 1,690,611,000	$ 1,690,611,000	$ 1,776,046,000
Reclassification of terminated interest rate swaps to interest expense within the next 12 months	996,000	996,000
Notional amounts outstanding interest rate swaps designated as fair value hedges,4.55% notes	200,000,000	200,000,000	200,000,000
Percentage of fixed-to-floating swap rate	4.55%	4.55%
Outstanding interest rate swaps designated as cash flow hedges	0	0
Notional amount of commodity contracts	0	0
Gain (loss) related to hedge ineffectiveness	$ 0	$ 0