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Accumulated Other Comprehensive Loss, Net of Tax Reclassifications from AOCI, net of tax (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |  |
Income tax effect |  | $ (2.1) | $ (4.2) | $ (4.3)
Total Reclassification from AOCI |  | 8.1 | 31.5 | 7.2
Foreign Currency Translation Adjustment |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | [1] | 3.7 | 23.3 | (0.9)
Available-for-sale Securities |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax |  | (1.3) | 0.0 | 0.0
Derivative Instruments |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax |  | 2.0 | 2.0 | 1.9
Defined Benefit and Postretirement Plans |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | [2] | $ 5.8 | $ 10.4 | $ 10.5
[1] | These foreign currency translation adjustments are primarily a result of the sales of businesses.
[2] | These accumulated other comprehensive loss components are included in the computation of net periodic cost. See Note 11 for further information

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- Definition Amount of tax expense (benefit) allocated to other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e640-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 11 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65896914&loc=d3e39076-109324 + Details
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