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Statements of Consolidated Comprehensive Income (Loss) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Statement of Comprehensive Income [Abstract] |  |  |
Net (loss) income | $ (236.6) | $ 71.8 | $ 104.8
Defined benefit pension plan and VEBAs: |  |  |
Total actuarial (loss) gain and prior service costs | (6.1) | (129.5) | 2.2
Reclassification adjustments: |  |  |
Amortization of net actuarial loss (gain) | 1.1 | (1.8) | 1.5
Amortization of prior service cost | 3.0 | 10.6 | 4.2
Accumulated Defined Benefit Plans Adjustment, Removal Of Obligation Attributable to Parent | 106.6 | 0.0 | 0.0
Other comprehensive income (loss) relating to defined benefit pension plan and VEBAs | 104.6 | (120.7) | 7.9
Available for sale securities: |  |  |
Unrealized (loss) gain on available for sale securities | (0.1) | (0.2) | 1.0
Reclassification adjustments: |  |  |
Reclassification of unrealized gain upon sale of available for sale securities | (0.4) | (0.1) | (1.0)
Other comprehensive loss relating to available for sale securities | (0.5) | (0.3) | 0.0
Unrealized loss on foreign currency cash flow hedges | (0.3) | 0.0 | 0.0
Foreign currency translation (loss) gain | (0.2) | 0.4 | 0.2
Other comprehensive income (loss), before tax | 103.6 | (120.6) | 8.1
Income tax (expense) benefit related to items of other comprehensive income (loss) | (39.2) | 45.2 | (2.8)
Other comprehensive income (loss), net of tax | 64.4 | (75.4) | 5.3
Comprehensive (loss) income | $ (172.2) | $ (3.6) | $ 110.1

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