Derivative Instruments and Hedging Activities Fair Value Balance Sheet (Details) € in Millions, $ in Millions	Mar. 31, 2019 USD ($)	Mar. 20, 2019 USD ($)	Mar. 20, 2019 EUR (€)	Dec. 31, 2018 USD ($)
Cross currency swaps
Derivatives designated as hedging instruments:
Derivative, notional amount		$ 400.0	€ 353
Designated as Hedging Instrument [Member]
Derivatives designated as hedging instruments:
Derivative asset, fair value, designated as hedging instrument	$ 61.7			$ 53.0
Derivative liability, fair value, designated as hedging instrument	(44.8)			(12.5)
Designated as Hedging Instrument [Member] | Cross currency swaps | Other Noncurrent Assets [Member]
Derivatives designated as hedging instruments:
Derivative asset, fair value, designated as hedging instrument	5.3			36.5
Designated as Hedging Instrument [Member] | Cross currency swaps | Other current assets [Member]
Derivatives designated as hedging instruments:
Derivative asset, fair value, designated as hedging instrument	47.3
Designated as Hedging Instrument [Member] | Cross currency swaps | Accounts payable and other current liabilities [Member]
Derivatives designated as hedging instruments:
Derivative liability, fair value, designated as hedging instrument	0.0
Designated as Hedging Instrument [Member] | Cross currency swaps | Other liabilities [Member]
Derivatives designated as hedging instruments:
Derivative liability, fair value, designated as hedging instrument	0.0			0.0
Designated as Hedging Instrument [Member] | Interest rate swaps [Member]
Derivatives designated as hedging instruments:
Derivative, notional amount	1,500.0
Designated as Hedging Instrument [Member] | Interest rate swaps [Member] | Other Noncurrent Assets [Member]
Derivatives designated as hedging instruments:
Derivative asset, fair value, designated as hedging instrument				0.0
Designated as Hedging Instrument [Member] | Interest rate swaps [Member] | Other non-current assets [Member]
Derivatives designated as hedging instruments:
Derivative asset, fair value, designated as hedging instrument	0.0
Designated as Hedging Instrument [Member] | Interest rate swaps [Member] | Other liabilities [Member]
Derivatives designated as hedging instruments:
Derivative liability, fair value, designated as hedging instrument	(44.7)			(12.3)
Designated as Hedging Instrument [Member] | Foreign currency forwards [Member] | Other current assets [Member]
Derivatives designated as hedging instruments:
Derivative asset, fair value, designated as hedging instrument	4.3			7.3
Designated as Hedging Instrument [Member] | Foreign currency forwards [Member] | Other non-current assets [Member]
Derivatives designated as hedging instruments:
Derivative asset, fair value, designated as hedging instrument	4.8			9.2
Designated as Hedging Instrument [Member] | Foreign currency forwards [Member] | Accounts payable and other current liabilities [Member]
Derivatives designated as hedging instruments:
Derivative liability, fair value, designated as hedging instrument	(0.1)			(0.1)
Designated as Hedging Instrument [Member] | Foreign currency forwards [Member] | Other liabilities [Member]
Derivatives designated as hedging instruments:
Derivative liability, fair value, designated as hedging instrument	0.0			(0.1)
Not Designated as Hedging Instrument [Member]
Derivatives not designated as hedging instruments:
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	73.0			37.9
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	(37.6)			(60.3)
Not Designated as Hedging Instrument [Member] | Commodity swaps [Member]
Derivatives designated as hedging instruments:
Derivative, notional amount	781.8			868.4
Not Designated as Hedging Instrument [Member] | Commodity swaps [Member] | Other current assets [Member]
Derivatives not designated as hedging instruments:
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	22.1			12.1
Not Designated as Hedging Instrument [Member] | Commodity swaps [Member] | Other non-current assets [Member]
Derivatives not designated as hedging instruments:
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	7.7			6.1
Not Designated as Hedging Instrument [Member] | Commodity swaps [Member] | Accounts payable and other current liabilities [Member]
Derivatives not designated as hedging instruments:
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	(27.1)			(37.9)
Not Designated as Hedging Instrument [Member] | Commodity swaps [Member] | Other liabilities [Member]
Derivatives not designated as hedging instruments:
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	(10.3)			(22.3)
Not Designated as Hedging Instrument [Member] | Commodity Option [Member]
Derivatives designated as hedging instruments:
Derivative, notional amount	46.6			46.6
Not Designated as Hedging Instrument [Member] | Commodity Option [Member] | Other current assets [Member]
Derivatives not designated as hedging instruments:
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	0.2			0.1
Not Designated as Hedging Instrument [Member] | Commodity Option [Member] | Accounts payable and other current liabilities [Member]
Derivatives not designated as hedging instruments:
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	(0.2)			(0.1)
Not Designated as Hedging Instrument [Member] | Warrant [Member]
Derivatives designated as hedging instruments:
Derivative, notional amount	51.7			50.6
Not Designated as Hedging Instrument [Member] | Warrant [Member] | Other Noncurrent Assets [Member]
Derivatives not designated as hedging instruments:
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	43.0			19.6
Net Investment Hedging [Member] | Designated as Hedging Instrument [Member] | Cross currency swaps
Derivatives designated as hedging instruments:
Derivative, notional amount				500.0
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Cross currency swaps
Derivatives designated as hedging instruments:
Derivative, notional amount	900.0
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Interest rate swaps [Member]
Derivatives designated as hedging instruments:
Derivative, notional amount				1,500.0
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign currency forwards [Member]
Derivatives designated as hedging instruments:
Derivative, notional amount	$ 311.6			$ 338.6