Derivative Instruments And Hedging Strategies (Fair Values Of Derivative Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 10,387
Derivative Liability	11,043
Derivatives Designated As Hedging Instruments [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	0
Derivative Liability	3,788
Derivatives Not Designated As Hedging Instruments [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	10,387
Derivative Liability	7,255
Foreign Exchange [Member] | Derivatives Not Designated As Hedging Instruments [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	496
Derivative Liability	238
Interest Rate Swap Agreements [Member] | Derivatives Designated As Hedging Instruments [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	0
Derivative Liability	3,788
Interest Rate Swap Agreements [Member] | Derivatives Not Designated As Hedging Instruments [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	0
Derivative Liability	2,755
Options On Equities And Equity Indices [Member] | Derivatives Not Designated As Hedging Instruments [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	752
Derivative Liability	96
Commodity Swap, Option And Future Contracts, Non-Exchange Traded [Member] | Derivatives Not Designated As Hedging Instruments [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	4,990
Derivative Liability	530
Commodity Contract [Member] | Derivatives Not Designated As Hedging Instruments [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	4,149
Derivative Liability	$ 3,636