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Basis of Financial Statement Presentation (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jan. 01, 2016
Mar. 31, 2016
Jun. 30, 2016
New Accounting Pronouncement, Early Adoption [Line Items]      
Discrete tax benefit     $ 0.3
New Accounting Pronouncement, Early Adoption, Effect      
New Accounting Pronouncement, Early Adoption [Line Items]      
Amount reclassified out of current deferred income tax assets   $ 4.6  
Accounting Standards Update 2016-09 | New Accounting Pronouncement, Early Adoption, Effect      
New Accounting Pronouncement, Early Adoption [Line Items]      
Discrete tax benefit   $ 0.3  
Cumulative effect to retained earnings due to early adoption of new accounting pronouncement $ 0.1