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Other Comprehensive (Loss) Earnings - Changes in Components of AOCI (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Pension and Postretirement Benefit Plans [Abstract]      
Amortization or settlement of actuarial losses $ 0.8 $ 1.4 $ 0.2
Tax benefit 0.0 (0.4) (0.1)
Net of tax 0.8 1.0 0.1
Cash Flow Hedges [Abstract]      
Net losses (gains) reclassified into earnings 0.0 0.0 0.2
Tax benefit 0.0 0.0 (0.1)
Net of tax $ 0.0 $ 0.0 $ 0.1