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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY      
Unrealized loss on hedging activities, tax $ 0.1 $ (0.3) $ 1.0
Defined benefit plan, tax $ 0.6 $ (0.6) $ 1.0