Activity of Derivative Instruments (Detail) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Foreign Currency Contracts | Derivatives Designated as Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI	$ 16	$ (321)	$ 529	$ (99)
Foreign Currency Contracts | Derivatives Designated as Hedges | Other Income (Expense), Net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	481	(98)	978	(190)
Interest Rate Swaps | Derivatives Designated as Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI		1,109		2,517
Interest Rate Swaps | Derivatives Designated as Hedges | Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)			(503)
Derivatives Not Designated as Hedges | Foreign Currency Contracts | Other Income (Expense), Net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	(217)		(675)
Derivatives Not Designated as Hedges | Security Price Guarantees | Other Income (Expense), Net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	$ 395	$ (1,044)	$ 10,844	$ 3,664