Derivative Financial Instruments Income and AOCI Effects (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	$ (1,824)	$ (5,992)	$ (15,621)
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	(3,097)	(13,217)	(2,051)
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net	94	(252)	(6,113)
Cash Flow Hedging [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	1,606	(1,750)	3,646
Cash Flow Hedging [Member] | Commodity Contract [Member] | Cost of Goods, Total [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	(1,148)	2,617	719
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net	94	(47)	(1)
Cash Flow Hedging [Member] | Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	15	(88)	(13,955)
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	(864)	(3,319)	(4,439)
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net	0	(205)	(6,112)
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member] | Cost of Goods, Total [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	(3,506)	(3,667)	(4,560)
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	(611)	(12,384)	2,481
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net	0	0	0
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member] | Sales Revenue, Goods, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	61	(487)	(752)
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	(474)	(131)	(812)
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net	0	0	0
Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives			(41,886)
Fair Value Hedging [Member] | Commodity Contract [Member] | Cost of Goods, Total [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives			153
Fair Value Hedging [Member] | Foreign Exchange Contract [Member] | Other Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	5,916	(5,052)	(42,039)
Refinancing of Debt [Member] | Interest Rate Contract [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)			(4,305)
Refinancing of Debt [Member] | Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives			1,451
Euro Denominated [Member] | Refinancing of Debt [Member] | Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives			$ 3,499