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Derivatives - Balance Sheet Location (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	$ 472.8	$ 845.8
Derivative liabilities	436.8	769.1
Derivatives designated as hedging instruments
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	23.6	188.2
Derivative liabilities	15.6	132.2
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	0.0	168.5
Derivative liabilities	0.0	122.5
Derivatives 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	0.0	19.7
Derivative liabilities	0.0	9.6
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	23.6	0.1
Derivative liabilities	15.6	0.0
Derivatives not designated as hedging instruments
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative assets	449.3	657.5
Derivative liabilities	421.1	637.0
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	437.9	652.9
Derivative liabilities	418.3	635.8
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	72.7	537.6
Derivative liabilities	12.9	429.0
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	24.5	71.7
Derivative liabilities	5.3	40.0
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	317.3	30.7
Derivative liabilities	363.7	126.4
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	23.3	12.9
Derivative liabilities	36.3	40.4
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	11.4	4.6
Derivative liabilities	2.9	1.2
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	11.2	4.4
Derivative liabilities	1.8	0.8
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	0.1	0.1
Derivative liabilities	0.0	0.0
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	0.1	0.1
Derivative liabilities	$ 1.1	$ 0.4

X

- 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://fasb.org/us-gaap/role/ref/legacyRef
-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://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
-Paragraph 3
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