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Effect of Change in Accounting Principle (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2017
Sep. 30, 2017
Dec. 31, 2016
Jan. 01, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Inventories, net   $ (396.6) $ (182.3)  
Retained earnings   $ (656.3) (425.5)  
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Diluted Earnings Per Share   $ 0.02    
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Basic Earnings Per Share   $ 0.02    
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income $ 2.4      
Restatement Adjustment [Member]        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Inventories, net     (37.2) $ (37.2)
Retained earnings     (24.2) (24.2)
Deferred Tax Assets, Net     $ 13.0 $ 13.0