Carrying Values of Derivative Instruments (Detail) (USD $) In Thousands	Sep. 30, 2011		Sep. 30, 2010
Derivative [Line Items]
Derivative Net Carrying Value	$ 10,411		$ 1,751
Designated as Hedging Instrument
Derivative [Line Items]
Derivative Net Carrying Value	11,570		(367)
Designated as Hedging Instrument | Foreign Exchange Contract
Derivative [Line Items]
Derivative Net Carrying Value	11,570	[1]	(114)	[1]
Designated as Hedging Instrument | Foreign Exchange Contract | Prepaid Expenses and Other Current Assets
Derivative [Line Items]
Fair Value- Assets	11,707	[1]	671	[1]
Designated as Hedging Instrument | Foreign Exchange Contract | Other Current Liabilities
Derivative [Line Items]
Fair Value- (Liabilities)	(137)	[1]	(785)	[1]
Designated as Hedging Instrument | Interest Rate Swap
Derivative [Line Items]
Derivative Net Carrying Value			(253)	[1]
Designated as Hedging Instrument | Interest Rate Swap | Other Current Liabilities
Derivative [Line Items]
Fair Value- (Liabilities)			(253)	[1]
Designated as Hedging Instrument | Prepaid Expenses and Other Current Assets
Derivative [Line Items]
Fair Value- Assets	11,707		671
Designated as Hedging Instrument | Other Current Liabilities
Derivative [Line Items]
Fair Value- (Liabilities)	(137)		(1,038)
Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative Net Carrying Value	(1,159)		2,118
Not Designated as Hedging Instrument | Commodity Contract
Derivative [Line Items]
Derivative Net Carrying Value	(1,159)	[1]	2,118	[1]
Not Designated as Hedging Instrument | Commodity Contract | Prepaid Expenses and Other Current Assets
Derivative [Line Items]
Fair Value- Assets			2,144	[1]
Not Designated as Hedging Instrument | Commodity Contract | Other Current Liabilities
Derivative [Line Items]
Fair Value- (Liabilities)	(1,159)	[1]	(26)	[1]
Not Designated as Hedging Instrument | Prepaid Expenses and Other Current Assets
Derivative [Line Items]
Fair Value- Assets			2,144
Not Designated as Hedging Instrument | Other Current Liabilities
Derivative [Line Items]
Fair Value- (Liabilities)	(1,159)		(26)
Prepaid Expenses and Other Current Assets
Derivative [Line Items]
Fair Value- Assets	11,707		2,815
Other Current Liabilities
Derivative [Line Items]
Fair Value- (Liabilities)	$ (1,296)		$ (1,064)

[1] Assets are included in Prepaid expenses and other and liabilities are included in Other accrued expenses on the accompanying consolidated balance sheets.