Statements of Consolidated and Combined Comprehensive Income Statements of Consolidated and Combined Comprehensive Income (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Other Comprehensive (Income) Loss, Unrealized Gain (Loss) on Derivatives Arising During Period, Tax $ 0.1    
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax $ 0.0    
Predecessor      
Other Comprehensive (Income) Loss, Unrealized Gain (Loss) on Derivatives Arising During Period, Tax   $ 0.7 $ 0.6
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax   $ 0.0 $ 0.0