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Derivatives - Balance Sheet Location (Details) - USD ($) $ in Millions | Jun. 30, 2018 | Dec. 31, 2017
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Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Derivative assets | $ 533.9 | $ 312.0
Derivative liabilities | 549.2 | 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 | 30.9 | 2.7
Derivative liabilities | 49.2 | 43.6
Derivatives designated as hedging instruments | Commodity contracts |  |
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet |  |
Derivative assets | 23.9 | 2.7
Derivative liabilities | 45.5 | 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 |  |
Derivative assets | 23.9 | 0.4
Derivative liabilities | 45.5 | 0.5
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 | 0.0 | 2.3
Derivative liabilities | 0.1 | 43.1
Derivatives 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 | 7.1 | 0.0
Derivative liabilities | 3.6 | 0.0
Derivatives 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 | 7.1 | 0.0
Derivative liabilities | 2.4 | 0.0
Derivatives 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 | 0.0 | 0.0
Derivative liabilities | 1.2 | 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 | 503.0 | 309.4
Derivative liabilities | 500.0 | 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 |  |
Derivative assets | 491.2 | 300.9
Derivative liabilities | 494.8 | 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 |  |
Derivative assets | 373.4 | 191.4
Derivative liabilities | 292.8 | 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 |  |
Derivative assets | 67.5 | 18.2
Derivative liabilities | 43.4 | 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 |  |
Derivative assets | 25.6 | 86.1
Derivative liabilities | 114.5 | 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 |  |
Derivative assets | 24.6 | 5.2
Derivative liabilities | 44.2 | 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 |  |
Derivative assets | 11.8 | 8.5
Derivative liabilities | 5.2 | 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 |  |
Derivative assets | 11.3 | 4.5
Derivative liabilities | 4.5 | 2.8
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 | 0.4 | 3.9
Derivative liabilities | 0.7 | 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 |  |
Derivative assets | 0.0 | 0.0
Derivative liabilities | $ 0.0 | $ 0.2

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