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Accumulated Other Comprehensive (Loss) Income Accumulated Other Comprehensive (Loss) Income (Tables) | 3 Months Ended
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Mar. 31, 2017
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) |
|  | Quarter Ended
|  | March 31,
|  | 2017 |  | 2016
Salaried VEBA and defined benefit pension plan: |  |  |  |
Beginning balance |  | $ | (37.1 | ) |  | $ | (31.3 | )
Amortization of net actuarial loss 1 |  | 0.2 |  |  | 0.1 |
Amortization of prior service cost 1 |  | 1.2 |  |  | 1.0 |
Less: income tax expense 2 |  | (0.5 | ) |  | (0.4 | )
Net amortization reclassified from AOCI to Net income |  | 0.9 |  |  | 0.7 |
Translation impact on Canadian pension plan AOCI balance |  | — |  |  | 0.1 |
Other comprehensive income, net of tax |  | 0.9 |  |  | 0.8 |
Ending balance |  | $ | (36.2 | ) |  | $ | (30.5 | )
Available for sale securities: |  |  |  |
Beginning balance |  | $ | 0.8 |  |  | $ | (0.1 | )
Unrealized gain on available for sale securities |  | 1.1 |  |  | — |
Less: income tax expense |  | (0.4 | ) |  | — |
Net unrealized gain on available for sale securities |  | 0.7 |  |  | — |
Reclassification of unrealized gain upon sale of available for sale securities 3 |  | (0.9 | ) |  | — |
Less: income tax benefit 2 |  | 0.3 |  |  | — |
Net unrealized gain reclassified from AOCI to Net income |  | (0.6 | ) |  | — |
Other comprehensive income, net of tax |  | 0.1 |  |  | — |
Ending balance |  | $ | 0.9 |  |  | $ | (0.1 | )
Foreign currency cash flow hedges: |  |  |  |
Beginning balance |  | $ | (0.1 | ) |  | $ | (0.2 | )
Unrealized gain on foreign currency cash flow hedges |  | — |  |  | 0.2 |
Less: income tax benefit |  | — |  |  | (0.1 | )
Net unrealized gain on foreign currency cash flow hedges |  | — |  |  | 0.1 |
Unrealized loss reclassified from AOCI to Net income 4 |  | 0.2 |  |  | — |
Less: income tax expense 2 |  | (0.1 | ) |  | — |
Net unrealized loss reclassified from AOCI to Net income |  | 0.1 |  |  | — |
Other comprehensive income, net of tax |  | 0.1 |  |  | 0.1 |
Ending balance |  | $ | — |  |  | $ | (0.1 | )
|  | Quarter Ended
|  | March 31,
|  | 2017 |  | 2016
Alloy Hedges: |  |  |  |
Beginning balance |  | $ | (0.1 | ) |  | $ | — |
Unrealized gain on Alloy Hedges |  | 0.3 |  |  | — |
Less: income tax expense |  | (0.1 | ) |  | — |
Net unrealized gain on Alloy Hedges |  | 0.2 |  |  | — |
Other comprehensive income, net of tax |  | 0.2 |  |  | — |
Ending balance |  | $ | 0.1 |  |  | $ | — |
Foreign currency translation: |  |  |  |
Beginning balance |  | $ | (0.2 | ) |  | $ | (0.1 | )
(Loss) gain on foreign currency translation |  | — |  |  | — |
Less: income tax (expense) benefit |  | — |  |  | — |
Other comprehensive (loss) income, net of tax |  | — |  |  | — |
Ending balance |  | $ | (0.2 | ) |  | $ | (0.1 | )
Total AOCI ending balance |  | $ | (35.4 | ) |  | $ | (30.8 | )

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- Definition Tabular disclosure of the components of accumulated 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 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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