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Derivatives - Balance Sheet Location (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	$ 243.2	$ 347.2
Derivative liabilities	212.8	332.5
Derivatives designated as hedging instruments
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	73.3	93.3
Derivative liabilities	64.5	108.9
Derivatives designated as hedging instruments | Commodity contracts | Short-term derivative assets, net
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	73.0	2.2
Derivative liabilities	63.5	5.4
Derivatives designated as hedging instruments | Commodity contracts | Accrued expenses and other current liabilities
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	0.2	86.0
Derivative liabilities	1.0	93.5
Derivatives designated as hedging instruments | Commodity contracts | Other long-term liabilities
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	0.0	5.1
Derivative liabilities	0.0	10.1
Derivatives not designated as hedging instruments
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	169.9	253.9
Derivative liabilities	148.3	223.6
Derivatives not designated as hedging instruments | Commodity contracts
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	160.0	238.0
Derivative liabilities	134.3	217.2
Derivatives not designated as hedging instruments | Commodity contracts | Short-term derivative assets, net
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	79.4	160.3
Derivative liabilities	43.9	86.7
Derivatives not designated as hedging instruments | Commodity contracts | Identifiable intangible and other non-current assets
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	20.7	17.1
Derivative liabilities	10.6	6.2
Derivatives not designated as hedging instruments | Commodity contracts | Accrued expenses and other current liabilities
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	55.0	52.5
Derivative liabilities	71.2	112.2
Derivatives not designated as hedging instruments | Commodity contracts | Other long-term liabilities
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	4.9	8.1
Derivative liabilities	8.6	12.1
Derivatives not designated as hedging instruments | Foreign currency contracts
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	9.9	16.0
Derivative liabilities	14.0	6.4
Derivatives not designated as hedging instruments | Foreign currency contracts | Short-term derivative assets, net
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	1.7	13.5
Derivative liabilities	1.0	3.4
Derivatives not designated as hedging instruments | Foreign currency contracts | Identifiable intangible and other non-current assets
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	0.0	0.9
Derivative liabilities	0.0	0.1
Derivatives not designated as hedging instruments | Foreign currency contracts | Accrued expenses and other current liabilities
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	8.1	1.6
Derivative liabilities	12.8	2.8
Derivatives not designated as hedging instruments | Foreign currency contracts | Other long-term liabilities
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	0.0	0.0
Derivative liabilities	$ 0.1	$ 0.0

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- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and elected not to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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+ References

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