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Derivatives - Fair Value Position (Details) - 12 months ended Dec. 31, 2015 € in Millions, ₨ in Millions, ¥ in Millions, £ in Millions, bbl in Millions, ZAR in Millions, SGD in Millions, SFr in Millions, RON in Millions, PLN in Millions, NOK in Millions, MXN in Millions, DKK in Millions, COP in Millions, CLP in Millions, CAD in Millions, BRL in Millions, AUD in Millions, $ in Millions	$ / ¥ bbl	$ / ₨	$ / CLP	$ / SFr	$ / CAD	$ / AUD	ZAR	SGD	RON	PLN	NOK	MXN	JPY (¥)	INR (₨)	EUR (€)	DKK	COP	CLP	CHF (SFr)	CAD	BRL	AUD	$ / £	$ / ZAR	$ / SGD	$ / RON	$ / PLN	$ / NOK	$ / MXN	$ / €	$ / DKK	$ / COP	$ / BRL	$ / bbl	Total	GBP (£)	USD ($)
Cash flow hedges.
Derivative instruments, at their respective fair value positions
Fair Value Amount																																					$ 15.2
Derivatives designated as hedging instruments
Derivative instruments, at their respective fair value positions
Fair Value Amount																																					14.3
Derivatives designated as hedging instruments | Cash flow hedges. | Commodity contracts | 2016
Derivative instruments, at their respective fair value positions
Notional value of commodity contracts | bbl	9.8
Weighted Average Fixed Price | $ / bbl																																		66.947
Weighted Average Mark-to-Market | $ / bbl																																		0.847
Fair Value Amount																																					8.3
Derivatives designated as hedging instruments | Cash flow hedges. | Commodity contracts | 2017
Derivative instruments, at their respective fair value positions
Notional value of commodity contracts | bbl	0.8
Weighted Average Fixed Price | $ / bbl																																		66.784
Weighted Average Mark-to-Market | $ / bbl																																		8.625
Fair Value Amount																																					6.9
Derivatives designated as hedging instruments | Fair value hedges | Long | 2016
Derivative instruments, at their respective fair value positions
Notional value of commodity contracts | bbl	2.8
Weighted Average Fixed Price | $ / bbl																																		54.104
Weighted Average Mark-to-Market | $ / bbl																																		4.929
Fair Value Amount																																					13.8
Derivatives designated as hedging instruments | Fair value hedges | Short | 2017
Derivative instruments, at their respective fair value positions
Notional value of commodity contracts | bbl	0.1
Weighted Average Fixed Price | $ / bbl																																		57.576
Weighted Average Mark-to-Market | $ / bbl																																		5.000
Fair Value Amount																																					0.5
Derivatives not designated as hedging instruments | Commodity contracts | Long | 2016
Derivative instruments, at their respective fair value positions
Notional value of commodity contracts | bbl	50.9
Weighted Average Fixed Price | $ / bbl																																		45.030
Weighted Average Mark-to-Market | $ / bbl																																		(15.935)
Fair Value Amount																																					(811.1)
Derivatives not designated as hedging instruments | Commodity contracts | Long | 2017
Derivative instruments, at their respective fair value positions
Notional value of commodity contracts | bbl	3.1
Weighted Average Fixed Price | $ / bbl																																		25.400
Weighted Average Mark-to-Market | $ / bbl																																		(2.452)
Fair Value Amount																																					(7.6)
Derivatives not designated as hedging instruments | Commodity contracts | Long | 2018
Derivative instruments, at their respective fair value positions
Notional value of commodity contracts | bbl	0.7
Weighted Average Fixed Price | $ / bbl																																		10.000
Weighted Average Mark-to-Market | $ / bbl																																		2.857
Fair Value Amount																																					2.0
Derivatives not designated as hedging instruments | Commodity contracts | Long | 2020
Derivative instruments, at their respective fair value positions
Notional value of commodity contracts | bbl	0.1
Weighted Average Fixed Price | $ / bbl																																		21.750
Weighted Average Mark-to-Market | $ / bbl																																		(1.000)
Fair Value Amount																																					(0.1)
Derivatives not designated as hedging instruments | Commodity contracts | Short | 2016
Derivative instruments, at their respective fair value positions
Notional value of commodity contracts | bbl	41.8
Weighted Average Fixed Price | $ / bbl																																		54.410
Weighted Average Mark-to-Market | $ / bbl																																		19.770
Fair Value Amount																																					826.4
Derivatives not designated as hedging instruments | Commodity contracts | Short | 2017
Derivative instruments, at their respective fair value positions
Notional value of commodity contracts | bbl	2.3
Weighted Average Fixed Price | $ / bbl																																		26.810
Weighted Average Mark-to-Market | $ / bbl																																		3.348
Fair Value Amount																																					7.7
Derivatives not designated as hedging instruments | Commodity contracts | Short | 2018
Derivative instruments, at their respective fair value positions
Notional value of commodity contracts | bbl	0.5
Weighted Average Fixed Price | $ / bbl																																		11.280
Weighted Average Mark-to-Market | $ / bbl																																		(1.200)
Fair Value Amount																																					(0.6)
Derivatives not designated as hedging instruments | Commodity contracts | Short | 2020
Derivative instruments, at their respective fair value positions
Notional value of commodity contracts | bbl	0.1
Weighted Average Fixed Price | $ / bbl																																		18.840
Weighted Average Mark-to-Market | $ / bbl																																		6.000
Fair Value Amount																																					0.6
Derivatives not designated as hedging instruments | Foreign currency contracts | Long | 2016 | AUD
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts																																					6.5
Weighted Average Mark-to-Market																																			(0.031)
Fair Value Amount																																					(0.2)
Derivatives not designated as hedging instruments | Foreign currency contracts | Long | 2016 | AUD | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price																																			0.717
Derivatives not designated as hedging instruments | Foreign currency contracts | Long | 2016 | BRL
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | AUD																						AUD 4.3
Derivatives not designated as hedging instruments | Foreign currency contracts | Long | 2016 | BRL | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / AUD						3.881
Derivatives not designated as hedging instruments | Foreign currency contracts | Long | 2016 | CAD
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | BRL																					BRL 82.8
Weighted Average Mark-to-Market | $ / BRL																																	0.025
Fair Value Amount																																					2.1
Derivatives not designated as hedging instruments | Foreign currency contracts | Long | 2016 | CAD | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / BRL																																	1.335
Derivatives not designated as hedging instruments | Foreign currency contracts | Long | 2016 | COP
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | CLP																		CLP 52,263.5
Fair Value Amount																																					0.1
Derivatives not designated as hedging instruments | Foreign currency contracts | Long | 2016 | COP | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / CLP			3,064.704
Derivatives not designated as hedging instruments | Foreign currency contracts | Long | 2016 | NOK
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | MXN												MXN 47.3
Weighted Average Mark-to-Market | $ / MXN																													0.004
Fair Value Amount																																					0.2
Derivatives not designated as hedging instruments | Foreign currency contracts | Long | 2016 | NOK | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / MXN																													8.474
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | CHF
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | CAD																				CAD 0.3
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | CHF | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / CAD					0.964
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | CLP
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | SFr																			SFr 4,199.0
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | CLP | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / SFr				702.379
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | DKK
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | COP																	COP 73.8
Weighted Average Mark-to-Market | $ / COP																																(0.003)
Fair Value Amount																																					(0.2)
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | DKK | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / COP																																6.854
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | EUR
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | DKK																DKK 45.7
Weighted Average Mark-to-Market | $ / DKK																															0.033
Fair Value Amount																																					1.5
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | EUR | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / DKK																															1.099
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | GBP
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | €															€ 124.7
Weighted Average Mark-to-Market | $ / €																														0.023
Fair Value Amount																																					2.9
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | GBP | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / €																														1.530
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | INR
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | £																																				£ 111.4
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | INR | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / £																							66.366
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | JPY
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | ₨														₨ 546.3
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | JPY | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / ₨		120.938
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | MXN
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | ¥													¥ 1,794.6
Fair Value Amount																																					(0.1)
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | MXN | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / ¥	16.803
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | PLN
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | NOK											NOK 12.6
Weighted Average Mark-to-Market | $ / NOK																												0.008
Fair Value Amount																																					0.1
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | PLN | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / NOK																												3.892
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | RON
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | PLN										PLN 42.9
Weighted Average Mark-to-Market | $ / PLN																											0.014
Fair Value Amount																																					0.6
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | RON | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / PLN																											4.083
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | SEK
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | RON									RON 45.6
Weighted Average Mark-to-Market | $ / RON																										(0.002)
Fair Value Amount																																					(0.1)
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | SEK | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / RON																										8.343
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | SGD
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | SGD								SGD 23.8
Weighted Average Mark-to-Market | $ / SGD																									(0.004)
Fair Value Amount																																					(0.1)
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | SGD | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / SGD																									1.411
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | ZAR
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | ZAR							ZAR 109.3
Weighted Average Mark-to-Market | $ / ZAR																								0.001
Fair Value Amount																																					0.1
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2016 | ZAR | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / ZAR																								14.245
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2017 | EUR
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts																																				1.7	1.8
Fair Value Amount																																					24.7
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2017 | EUR | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price																							1.105												1.083
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2017 | GBP
Derivative instruments, at their respective fair value positions
Non-Designated, Notional amount of foreign currency contracts | £																																				£ 8.0
Weighted Average Mark-to-Market | $ / £																							0.063
Fair Value Amount																																					$ 0.5
Derivatives not designated as hedging instruments | Foreign currency contracts | Short | 2017 | GBP | Weighted Average
Derivative instruments, at their respective fair value positions
Weighted Average Fixed Price | $ / £																							1.553

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
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-Section 50
-Paragraph 1A
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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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