Derivatives - Balance Sheet Location (Details) - USD ($) $ in Millions		Mar. 31, 2016	Dec. 31, 2015
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative asset	[1]	$ 427.8	$ 522.9
Derivative liability	[1]	410.9	468.7
Derivatives designated as hedging instruments
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative asset	[1]	85.2	127.7
Derivative liability	[1]	76.1	98.2
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 asset	[1]	84.2	114.0
Derivative liability	[1]	74.7	95.3
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 asset	[1]		7.4
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 asset	[1]	0.9	6.3
Derivative liability	[1]	1.4	2.9
Derivatives not designated as hedging instruments
Information about derivative instruments measured at fair value and their locations on the consolidated balance sheet
Derivative asset	[1]	342.7	395.2
Derivative liability	[1]	334.8	370.5
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 asset	[1]	167.6	241.4
Derivative liability	[1]	31.5	26.6
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 asset	[1]	16.8	17.0
Derivative liability	[1]	4.2	4.8
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 asset	[1]	136.2	120.4
Derivative liability	[1]	268.2	319.9
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 asset	[1]	12.0	4.0
Derivative liability	[1]	18.5	14.2
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 asset	[1]	4.5	10.9
Derivative liability	[1]	3.4	3.3
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 asset	[1]	0.4	0.7
Derivative liability	[1]	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 asset	[1]	4.9	0.8
Derivative liability	[1]	8.8	$ 1.7
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 asset	[1]	0.2
Derivative liability	[1]	$ 0.1

[1] Amounts may not add due to rounding