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Derivative Instruments - Balance Sheet Location (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net	$ 0.0	$ 0.0	$ 0.0
Gross Derivative Assets	845.8	312.0
Gross Derivative Liabilities	769.1	332.5
Derivatives designated as hedging instruments | Commodity contracts
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Gross Derivative Assets	188.2	2.7
Gross Derivative Liabilities	132.2	43.6
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
Gross Derivative Assets	168.5	0.4
Gross Derivative Liabilities	122.5	0.5
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
Gross Derivative Assets	19.7	0.0
Gross Derivative Liabilities	9.6	0.0
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
Gross Derivative Assets	0.1	2.3
Gross Derivative Liabilities	0.0	43.1
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
Gross Derivative Assets	0.0	0.0
Gross Derivative Liabilities	0.0	0.0
Derivatives not designated as hedging instruments
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Gross Derivative Assets	657.5	309.4
Gross Derivative Liabilities	637.0	288.9
Derivatives not designated as hedging instruments | Commodity contracts
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Gross Derivative Assets	652.9	300.9
Gross Derivative Liabilities	635.8	280.2
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
Gross Derivative Assets	537.6	191.4
Gross Derivative Liabilities	429.0	123.3
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
Gross Derivative Assets	71.7	18.2
Gross Derivative Liabilities	40.0	5.2
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
Gross Derivative Assets	30.7	86.1
Gross Derivative Liabilities	126.4	138.2
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
Gross Derivative Assets	12.9	5.2
Gross Derivative Liabilities	40.4	13.5
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
Gross Derivative Assets	4.6	8.5
Gross Derivative Liabilities	1.2	8.7
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
Gross Derivative Assets	4.4	4.5
Gross Derivative Liabilities	0.8	2.8
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
Gross Derivative Assets	0.1	0.0
Gross 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
Gross Derivative Assets	0.1	3.9
Gross Derivative Liabilities	0.4	5.7
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
Gross Derivative Assets	0.0	0.0
Gross Derivative Liabilities	$ 0.0	$ 0.2

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
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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-Section 50
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Amount of gain (loss)recognized in the income statement from the hedging ineffectiveness of a fair value hedge.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
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