Financial Instruments Income Statement Location (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss)	$ (3,465)		$ (1,816)		$ 1,794		$ (441)
Designated as Hedging Instrument [Member] | Foreign currency financial instruments [Member] | Net investment (loss) gain
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss)	(1,410)	[1]	(682)	[1]	274	[1]	(848)	[1]
Designated as Hedging Instrument [Member] | Commodity contracts [Member] | Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss)	(1,543)	[1]	0	[1]	1,083	[1]	0	[1]
Not Designated as Hedging Instrument [Member] | Commodity contracts [Member] | Realized and unrealized gain (loss) on derivatives [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss)	(351)	[2]	(1,036)	[2]	1,495	[2]	(284)	[2]
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss)	(161)	[2]	0	[2]	(265)	[2]	0	[2]
Not Designated as Hedging Instrument [Member] | Derivative features of subordinated notes [Member] | Realized and unrealized gain (loss) on derivatives [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss)	$ 0	[2]	$ (98)	[2]	$ (793)	[2]	$ 691	[2]

[1] Designated as hedging instruments.

[2] Not designated as hedging instruments.