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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Net income (loss) $ (22.4) $ (2.9) $ (14.8) $ (17.5)
Amortization of prior service costs (credits) 0.0 0.0 (0.1) (0.1)
Other comprehensive income (loss), before tax     (0.1) (0.1)
Income tax expense related to items of other comprehensive income 0.0 0.0 0.0 0.0
Other comprehensive income (loss), net of tax     (0.1) (0.1)
Comprehensive income (loss) $ (22.4) $ (2.9) $ (14.9) $ (17.6)