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CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Statement of Comprehensive Income [Abstract]    
Net (loss) $ (50.8) $ (2.0)
Amortization of actuarial (gains) losses, net 0.3 6.8
Amortization of prior service costs (credits) (0.1) (0.2)
Other comprehensive income, before tax 0.2 7.0
Income tax expense related to items of other comprehensive income (0.1) (2.6)
Other comprehensive income, net of tax 0.1 4.4
Comprehensive income (loss) $ (50.7) $ 2.4