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Derivatives (Details) In Thousands, unless otherwise specified		9 Months Ended					9 Months Ended
	Sep. 30, 2014 Derivatives designated as hedging instruments Fair value hedges USD ($)	Sep. 30, 2014 Derivatives designated as hedging instruments Fair value hedges Commodity contracts Long 2014 USD ($) bbl	Sep. 30, 2014 Derivatives designated as hedging instruments Fair value hedges Commodity contracts Short 2014 USD ($) bbl	Sep. 30, 2014 Derivatives designated as hedging instruments Fair value hedges Commodity contracts Short 2015 USD ($) bbl	Sep. 30, 2014 Derivatives not designated as hedging instruments USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Commodity contracts USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Commodity contracts Long 2014 USD ($) bbl	Sep. 30, 2014 Derivatives not designated as hedging instruments Commodity contracts Long 2015 USD ($) bbl	Sep. 30, 2014 Derivatives not designated as hedging instruments Commodity contracts Long 2016 USD ($) bbl	Sep. 30, 2014 Derivatives not designated as hedging instruments Commodity contracts Long 2017 USD ($) bbl	Sep. 30, 2014 Derivatives not designated as hedging instruments Commodity contracts Long 2018 bbl	Sep. 30, 2014 Derivatives not designated as hedging instruments Commodity contracts Short 2014 USD ($) bbl	Sep. 30, 2014 Derivatives not designated as hedging instruments Commodity contracts Short 2015 USD ($) bbl	Sep. 30, 2014 Derivatives not designated as hedging instruments Commodity contracts Short 2016 USD ($) bbl	Sep. 30, 2014 Derivatives not designated as hedging instruments Commodity contracts Short 2017 USD ($) bbl	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 AUD USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 AUD	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 AUD Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 BRL USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 BRL	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 BRL Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 CAD USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 CAD	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 CAD Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 CLP USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 CLP	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 CLP Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 COP USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 COP	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 COP Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 DKK USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 DKK	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 DKK Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 EUR USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 EUR EUR (€)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 EUR Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 GBP USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 GBP GBP (£)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 GBP Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 INR USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 INR	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 INR Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 JPY USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 JPY JPY (¥)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 JPY Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 MXN USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 MXN	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 MXN Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 NOK USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 NOK	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 NOK Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 PLN USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 PLN	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 PLN Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 RON USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 RON	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 RON Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 SGD USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 SGD	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2014 SGD Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2015 GBP USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2015 GBP GBP (£)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2015 GBP Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2015 ZAR USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2015 ZAR	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Long 2015 ZAR Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 AUD USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 AUD	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 AUD Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 CAD USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 CAD	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 CAD Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 CLP USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 CLP	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 CLP Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 COP USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 COP	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 COP Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 DKK USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 DKK	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 DKK Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 EUR USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 EUR EUR (€)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 EUR Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 GBP USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 GBP GBP (£)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 GBP Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 INR USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 INR	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 INR Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 JPY USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 JPY JPY (¥)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 JPY Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 MXN USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 MXN	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 MXN Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 NOK USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 NOK	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 NOK Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 PLN USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 PLN	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 PLN Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 RON USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 RON	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 RON Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 SGD USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 SGD	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2014 SGD Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2015 ZAR USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2015 ZAR	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts Short 2015 ZAR Weighted Average USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts three Short 2015 GBP USD ($)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts three Short 2015 GBP GBP (£)	Sep. 30, 2014 Derivatives not designated as hedging instruments Foreign currency contracts three Short 2015 GBP Weighted Average USD ($)
Derivative instruments, at their respective fair value positions
Notional value of commodity contracts		267,000	4,853,000	10,000			14,323,000	17,690,000	744,000	56,000	18,000	13,783,000	12,864,000	392,000	11,000
Non-Designated, Notional amount of foreign currency contracts																		10,746			5,183			7,690			1,847,698			19,179,268			35,110			€ 39,442			£ 135,006			466,074			¥ 1,381,969			23,081			5,676			11,651			77,303			112			£ 5,125			600			8,664			36,225			2,385,660			22,970,683			11,303			€ 84,016			£ 110,129			735,479			¥ 1,240,477			65,802			28,950			19,956			117,356			221,819			33,150			£ 250
Weighted Average Fixed Price		106.35	72.52	113.17			81.37	70.99	91.37	24.20	25.66	91.92	98.41	95.86	70.94
Weighted Average Fixed Price																			0.93			2.28			1.09			587.54			1,923.93			5.60			1.33			1.67			103.49			13.18			6.24			3.15			1.25			10.82			0.91			1.65			1.66			0.91			1.09			583.07			1,926.57			1.33			1.67			61.29			103.18			13.17			6.25			3.32			1.25			10.94			1,019.73			1.66			1.67
Weighted Average Mark-to-Market		(2.850)	2.912	1.300			(4.211)	(1.803)	(3.231)	(0.214)		5.316	3.234	3.926	5.909
Weighted Average Mark-to-Market																	(0.060)			(0.030)			(0.026)			0.000			0.000			(0.010)			0.079			0.061			0.000			(0.002)			(0.004)			0.019			(0.017)			(0.004)			0.054			0.028			(0.040)			0.051			0.028			0.000			0.000			(0.072)			(0.046)			0.000			0.001			0.002			0.004			0.020			0.016			0.004			0.000			0.033			0.064
Fair Value Amount	$ 13,382	$ (761)	$ 14,130	$ 13	$ 31,339	$ 21,848	$ (60,319)	$ (31,900)	$ (2,404)	$ (12)		$ 73,275	$ 41,604	$ 1,539	$ 65	$ 9,491	$ (641)			$ (157)			$ (201)			$ (180)			$ (580)			$ (349)			$ 3,124			$ 8,169			$ (140)			$ (2,594)			$ (81)			$ 107			$ (195)			$ (290)			$ 6			$ 141			$ (24)			$ 445			$ 1,014			$ 261			$ 705			$ (818)			$ (3,889)			$ 25			$ 443			$ 2,395			$ 280			$ 591			$ 323			$ 498			$ (7)			$ 1,094			$ 16

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- Definition

Weighted average mark to market adjustment to fair value for nonmonetary units.

+ References

No definition available.

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- Definition

Weighted average mark to market adjustment to fair value.

+ References

No definition available.

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- Definition

Nominal or face amount used to calculate payments on the derivative asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

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- Definition

The average strike price on the group of price risk option contracts such as put options or call options.

+ References

No definition available.

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- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958

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- Definition

Contractual rate at which a foreign currency can be purchased or sold.

+ References

No definition available.

+ Details

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- Definition

Nominal volume used to calculate payments on a derivative instrument.

+ References

No definition available.

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