Derivative Instruments and Hedging Activities Fair Value Balance Sheet (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Designated as Hedging Instrument [Member]
Derivatives designated as hedging instruments:
Derivative asset, fair value, designated as hedging instrument	$ 3.3	$ 15.3
Derivative liability, fair value, designated as hedging instrument	(5.7)	(0.9)
Designated as Hedging Instrument [Member] \| Interest rate swaps [Member]
Derivatives designated as hedging instruments:
Derivative, notional amount	1,000.0
Designated as Hedging Instrument [Member] \| Interest rate swaps [Member] \| Other 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 non-current assets [Member]
Derivatives designated as hedging instruments:
Derivative asset, fair value, designated as hedging instrument	0.4
Designated as Hedging Instrument [Member] \| Interest rate swaps [Member] \| 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] \| Interest rate swaps [Member] \| Other liabilities [Member]
Derivatives designated as hedging instruments:
Derivative liability, fair value, designated as hedging instrument	(0.3)
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	2.9	12.0
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	0.0	3.3
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	(2.2)	(0.3)
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	(3.2)	(0.6)
Not Designated as Hedging Instrument [Member]
Derivatives not designated as hedging instruments:
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	49.9	24.4
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	(19.8)	(42.5)
Not Designated as Hedging Instrument [Member] \| Commodity swaps [Member]
Derivatives designated as hedging instruments:
Derivative, notional amount	687.8	791.4
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	21.9	11.8
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	27.8	12.6
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	(12.4)	(23.3)
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	(7.2)	(19.2)
Not Designated as Hedging Instrument [Member] \| Commodity Option [Member]
Derivatives designated as hedging instruments:
Derivative, notional amount	13.6	13.6
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	0.1
Not Designated as Hedging Instrument [Member] \| Commodity Option [Member] \| Other non-current assets [Member]
Derivatives not designated as hedging instruments:
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	0.1	0.0
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	(0.1)
Not Designated as Hedging Instrument [Member] \| Commodity Option [Member] \| Other liabilities [Member]
Derivatives not designated as hedging instruments:
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	(0.1)	0.0
Cash Flow Hedging [Member] \| Designated as Hedging Instrument [Member] \| Foreign currency forwards [Member]
Derivatives designated as hedging instruments:
Derivative, notional amount	$ 317.2	$ 329.4

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 4B
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 860
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-Paragraph 4D
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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