Derivative Instruments and Hedging Activities (Details 4) (Other Income Expense [Member], Forward Exchange Contract [Member], Not Designated as Hedging Instrument [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Other Income Expense [Member] | Forward Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]
Undesignated hedges
Amount of Gain (Loss) Recognized in Income on Derivative	$ (19,319)	$ (13,248)	$ (13,280)	$ (5,106)