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Accumulated Other Comprehensive (Loss) Income | 12 Months Ended
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Dec. 31, 2018
Equity [Abstract] |
Accumulated Other Comprehensive (Loss) Income | Accumulated Other Comprehensive (Loss) Income The following table presents the changes in the accumulated balances for each component of Accumulated other comprehensive (loss) income ("AOCI") for each period presented (in millions of dollars):
|  | Year Ended December 31,
|  | 2018 |  | 2017 |  | 2016
Defined benefit pension plan and VEBAs: |  |  |  |  |  |
Beginning balance |  | $ | (38.5 | ) |  | $ | (37.1 | ) |  | $ | (31.3 | )
Actuarial gain (loss) arising during the period |  | 4.4 |  |  | (0.3 | ) |  | (5.7 | )
Less: income tax (expense) benefit |  | (1.1 | ) |  | 0.1 |  |  | 2.1 |
Net actuarial gain (loss) arising during the period |  | 3.3 |  |  | (0.2 | ) |  | (3.6 | )
Prior service cost arising during the period |  | (6.9 | ) |  | (7.3 | ) |  | (8.3 | )
Less: income tax benefit |  | 1.7 |  |  | 2.7 |  |  | 3.1 |
Net prior service cost arising during the period |  | (5.2 | ) |  | (4.6 | ) |  | (5.2 | )
Amortization of net actuarial loss 1 |  | 0.9 |  |  | 0.9 |  |  | 0.5 |
Amortization of prior service cost 1 |  | 5.4 |  |  | 4.7 |  |  | 4.1 |
Less: income tax expense 2 |  | (1.5 | ) |  | (2.1 | ) |  | (1.7 | )
Net amortization and reclassification from AOCI to Net income |  | 4.8 |  |  | 3.5 |  |  | 2.9 |
Translation impact on Canadian pension plan AOCI balance |  | — |  |  | (0.1 | ) |  | 0.1 |
Other comprehensive income (loss), net of tax |  | 2.9 |  |  | (1.4 | ) |  | (5.8 | )
Ending balance |  | $ | (35.6 | ) |  | $ | (38.5 | ) |  | $ | (37.1 | )
Available for sale securities: |  |  |  |  |  |
Beginning balance 3 |  | $ | 0.9 |  |  | $ | 0.8 |  |  | $ | (0.1 | )
Unrealized gain on available for sale securities |  | 4.7 |  |  | 4.0 |  |  | 1.9 |
Less: income tax expense |  | (1.1 | ) |  | (1.5 | ) |  | (0.7 | )
Net gain on available for sale securities |  | 3.6 |  |  | 2.5 |  |  | 1.2 |
Gain reclassified from AOCI to Net income 4 |  | (5.4 | ) |  | (3.2 | ) |  | (0.5 | )
Less: income tax benefit 2 |  | 1.2 |  |  | 1.2 |  |  | 0.2 |
Net gain reclassified from AOCI to Net income |  | (4.2 | ) |  | (2.0 | ) |  | (0.3 | )
Other comprehensive (loss) income, net of tax |  | (0.6 | ) |  | 0.5 |  |  | 0.9 |
Ending balance |  | $ | 0.3 |  |  | $ | 1.3 |  |  | $ | 0.8 |
Cash Flow Hedges: |  |  |  |  |  |
Beginning balance |  | $ | 0.5 |  |  | $ | (0.2 | ) |  | $ | (0.2 | )
Unrealized (loss) gain on cash flow hedges |  | (21.2 | ) |  | 1.8 |  |  | (0.1 | )
Less: income tax benefit (expense) |  | 5.3 |  |  | (0.7 | ) |  | — |
Net unrealized (loss) gain on cash flow hedges |  | (15.9 | ) |  | 1.1 |  |  | (0.1 | )
Reclassification of unrealized loss (gain) upon settlement of cash flow hedges 5 |  | 2.7 |  |  | (0.6 | ) |  | 0.1 |
Less: income tax (expense) benefit 2 |  | (0.7 | ) |  | 0.2 |  |  | — |
Net loss (gain) reclassified from AOCI to Net income |  | 2.0 |  |  | (0.4 | ) |  | 0.1 |
Other comprehensive (loss) income, net of tax |  | (13.9 | ) |  | 0.7 |  |  | — |
Ending balance |  | $ | (13.4 | ) |  | $ | 0.5 |  |  | $ | (0.2 | )
|  | Year Ended December 31,
|  | 2018 |  | 2017 |  | 2016
Foreign Currency Translation: |  |  |  |  |  |
Beginning balance |  | $ | — |  |  | $ | (0.2 | ) |  | $ | (0.1 | )
Other comprehensive (loss) income, net of tax |  | (0.1 | ) |  | 0.2 |  |  | (0.1 | )
Ending balance |  | $ | (0.1 | ) |  | $ | — |  |  | $ | (0.2 | )
Total AOCI ending balance |  | $ | (48.8 | ) |  | $ | (36.7 | ) |  | $ | (36.7 | )
____________
1. | Amounts amortized out of AOCI relating to Salaried VEBA adjustments were included within Other expense, 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. | The beginning unrealized gain within Available for sale securities as of January 1, 2018 includes a $0.4 million cumulative-effect adjustment from our adoption of ASU 2016-01, which required us to remove cumulative gains on equity investments related to our deferred compensation plan as they are no longer accounted for as available for sale securities (see Note 1 and Note 4 for additional details).
4. | Amounts reclassified out of AOCI relating to sales of available for sale securities were included as a component of Other expense, net. We use the specific identification method to determine the amount reclassified out of AOCI.
5. Amounts reclassified out of AOCI relating to cash flow hedges were included as a component of Cost of products sold, excluding depreciation and amortization and other items. As of December 31, 2018, we estimate a net mark-to-market loss before tax of $15.6 million in AOCI will be reclassified into Net income within the next 12 months.

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 + Details
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