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Accumulated Other Comprehensive (Loss) Income (Tables) | 3 Months Ended
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Mar. 31, 2018
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) |
|  | Quarter Ended
|  | March 31,
|  | 2018 |  | 2017
Defined Benefit Pension Plan and Salaried VEBA: |  |  |  |
Beginning balance |  | $ | (38.5 | ) |  | $ | (37.1 | )
Amortization of net actuarial loss 1 |  | 0.2 |  |  | 0.2 |
Amortization of prior service cost 1 |  | 1.3 |  |  | 1.2 |
Less: income tax expense 2 |  | (0.3 | ) |  | (0.5 | )
Net amortization reclassified from AOCI to Net income |  | 1.2 |  |  | 0.9 |
Other comprehensive income, net of tax |  | 1.2 |  |  | 0.9 |
Ending balance |  | $ | (37.3 | ) |  | $ | (36.2 | )
Available for Sale Securities: |  |  |  |
Beginning balance |  | $ | 0.9 |  |  | $ | 0.8 |
Unrealized gain on available for sale securities |  | 1.0 |  |  | 1.1 |
Less: income tax expense |  | (0.2 | ) |  | (0.4 | )
Net unrealized gain on available for sale securities |  | 0.8 |  |  | 0.7 |
Reclassification of unrealized gain upon sale of available for sale securities 3 |  | (1.5 | ) |  | (0.9 | )
Less: income tax benefit 2 |  | 0.5 |  |  | 0.3 |
Net gain reclassified from AOCI to Net income |  | (1.0 | ) |  | (0.6 | )
Other comprehensive (loss) income, net of tax |  | (0.2 | ) |  | 0.1 |
Ending balance |  | $ | 0.7 |  |  | $ | 0.9 |
Cash Flow Hedges: |  |  |  |
Beginning balance |  | $ | 0.5 |  |  | $ | (0.2 | )
Unrealized (loss) gain on cash flow hedges |  | (12.2 | ) |  | 0.3 |
Less: income tax benefit (expense) |  | 3.0 |  |  | (0.1 | )
Net unrealized (loss) gain on cash flow hedges |  | (9.2 | ) |  | 0.2 |
Reclassification of unrealized (gain) loss upon settlement of cash flow hedges 4 |  | (0.1 | ) |  | 0.2 |
Less: income tax expense 2 |  | — |  |  | (0.1 | )
Net (gain) loss reclassified from AOCI to Net income |  | (0.1 | ) |  | 0.1 |
Other comprehensive (loss) income, net of tax |  | (9.3 | ) |  | 0.3 |
Ending balance |  | $ | (8.8 | ) |  | $ | 0.1 |
Foreign Currency Translation: |  |  |  |
Beginning balance |  | $ | — |  |  | $ | (0.2 | )
Other comprehensive income, net of tax |  | — |  |  | — |
Ending balance |  | $ | — |  |  | $ | (0.2 | )
Total AOCI ending balance |  | $ | (45.4 | ) |  | $ | (35.4 | )
____________________
1 | Amounts amortized out of AOCI relating to Salaried VEBA adjustments were included within Other income, net, as a component of Net periodic postretirement benefit cost relating to Salaried VEBA.
2 | Income tax amounts reclassified out of AOCI were included as a component of Income tax provision.
3 | Amounts reclassified out of AOCI relating to sales of available for sale securities were included as a component of Other income, net. We use the specific identification method to determine the amount reclassified out of AOCI.

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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=84228862&loc=SL7669686-108580 + Details
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