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Financial Instruments - Income Statement (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Derivatives, Fair Value [Line Items] |  |  |  |
Sales Revenue, Goods, Net | $ 2,694.0 | $ 2,389.7 | $ 5,478.3 | $ 4,796.7
Cost of sales | 2,114.8 | 1,876.8 | 4,307.3 | 3,767.5
Selling, general and administrative expenses | 236.0 | 215.1 | 489.4 | 434.1
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income, Effective Portion, Net [Abstract] |  |  |  |
Gain (loss) expected to be reclassified in one year or less |  |  | (2.7) |
Commodity contracts |  |  |  |
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income, Effective Portion, Net [Abstract] |  |  |  |
Gain (loss) expected to be reclassified in one year or less |  |  | (0.1) |
Foreign currency |  |  |  |
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income, Effective Portion, Net [Abstract] |  |  |  |
Gain (loss) expected to be reclassified in one year or less |  |  | (2.6) |
Cross Currency Interest Rate Contract [Member] | Interest expense and finance charges |  |  |  |
Derivatives Designated As Net Investment Hedges Under Topic 815 Abstract |  |  |  |
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net | 2.2 | 0.0 | 3.5 | 0.0
Foreign currency denominated debt designated as a net investment hedge [Member] | SG&A expense |  |  |  |
Derivatives Designated As Net Investment Hedges Under Topic 815 Abstract |  |  |  |
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net | 2.5 | 1.1 | (1.2) | 0.1
Cash Flow Hedging [Member] | Commodity contracts | Sales Revenue, Net [Member] |  |  |  |
Derivatives Designated As Net Investment Hedges Under Topic 815 Abstract |  |  |  |
Gain (loss) reclassified from accumulated OCI into net income, effective portion, net | 0.0 | 0.0 | 0.0 | 0.0
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net | 0.0 | 0.0 | 0.0 | 0.0
Cash Flow Hedging [Member] | Commodity contracts | Cost of goods sold |  |  |  |
Derivatives Designated As Net Investment Hedges Under Topic 815 Abstract |  |  |  |
Gain (loss) reclassified from accumulated OCI into net income, effective portion, net | 0.0 | 0.1 | 0.0 | 0.3
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net | 0.0 | 0.0 | 0.0 | 0.0
Cash Flow Hedging [Member] | Commodity contracts | SG&A expense |  |  |  |
Derivatives Designated As Net Investment Hedges Under Topic 815 Abstract |  |  |  |
Gain (loss) reclassified from accumulated OCI into net income, effective portion, net | 0.0 | 0.0 | 0.0 | 0.0
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net | 0.0 | 0.0 | 0.0 | 0.0
Cash Flow Hedging [Member] | Foreign currency | Sales Revenue, Net [Member] |  |  |  |
Derivatives Designated As Net Investment Hedges Under Topic 815 Abstract |  |  |  |
Gain (loss) reclassified from accumulated OCI into net income, effective portion, net | (0.7) | 0.9 | (0.8) | 2.0
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net | 0.0 | 0.0 | 0.0 | 0.0
Cash Flow Hedging [Member] | Foreign currency | Cost of goods sold |  |  |  |
Derivatives Designated As Net Investment Hedges Under Topic 815 Abstract |  |  |  |
Gain (loss) reclassified from accumulated OCI into net income, effective portion, net | (1.5) | 0.5 | (2.6) | 1.3
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net | 0.0 | 0.0 | 0.0 | 0.0
Cash Flow Hedging [Member] | Foreign currency | SG&A expense |  |  |  |
Derivatives Designated As Net Investment Hedges Under Topic 815 Abstract |  |  |  |
Gain (loss) reclassified from accumulated OCI into net income, effective portion, net | (0.3) | 0.0 | (0.3) | 0.0
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net | $ 0.0 | $ (0.1) | $ 0.0 | $ 0.0

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- Definition Derivatives Designated As Net Investment Hedges Under Topic 815 Abstract. + References No definition available. + Details
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- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994 + Details
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- Definition Total costs related to goods produced and sold during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624177-113959 + Details
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- Definition The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1),(2) -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 + Details
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- Definition The amount of net gain (loss) reclassified into earnings in the period when cash flow hedge is discontinued because it is probable that the original forecasted transactions will not occur by the end of the original period or an additional two month time period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994 + Details
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- Definition Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(a)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68048583&loc=d3e3636-108311 + Details
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