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Financial Instruments Financial Instruments, Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Derivatives Qualifying as Hedges, before Tax [Roll Forward] |  |  |  |
Net Amount Recognized Into Earnings, Pretax |  | $ 2.0 | $ (2.2) | $ (12.8)
Derivatives Qualifying as Hedges, Net of Tax [Roll Forward] |  |  |  |
Beginning Balance, After-Tax |  | (5.6) |  |
Net Change in Value of Outstanding Hedges, After-Tax | [1] | (7.5) | 2.1 | 8.4
Net Amount Recognized Into Earnings, After-Tax | [2] | 1.3 | (1.8) | (8.8)
Ending Balance, After-Tax |  | (11.8) | (5.6) |
Cash Flow Hedging [Member] |  |  |  |
Derivatives Qualifying as Hedges, before Tax [Roll Forward] |  |  |  |
Beginning Balance, Pretax |  | 1.1 | 0.4 |
Net Change in Value of Outstanding Hedges, Pretax |  | (10.9) | 2.9 |
Net Amount Recognized Into Earnings, Pretax |  | 2.0 | (2.2) |
Ending Balance, Pretax |  | (7.8) | 1.1 | 0.4
Derivatives Qualifying as Hedges, Net of Tax [Roll Forward] |  |  |  |
Beginning Balance, After-Tax |  | (5.6) | (5.9) |
Net Change in Value of Outstanding Hedges, After-Tax |  | (7.5) | 2.1 |
Net Amount Recognized Into Earnings, After-Tax |  | 1.3 | (1.8) |
Ending Balance, After-Tax |  | $ (11.8) | $ (5.6) | $ (5.9)
[1] | The tax effects for the year ended December 31, 2017 were $(4.1) million for foreign currency translation, $5.4 million for net actuarial losses arising during the period and $3.4 million for derivatives. The tax effects for the year ended December 31, 2016 were $(7.9) million for foreign currency translation, 5.4 million for net actuarial losses arising during the period and $(0.8) million for derivatives. The tax effects for the year ended December 31, 2015 were $(10.6) million for foreign currency translation, $10.4 million for net actuarial losses arising during the period and $(3.6) million for derivatives.
[2] | See Note 19 – Comprehensive Income (Loss) for the tax effects for the years ended December 31, 2017, December 31, 2016 and December 31, 2015.

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- Definition Accumulated pretax change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses. + References No definition available. + Details
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- Definition Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e681-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80784-113994 + Details
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