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Supplemental Balance Sheet Information - Other Long-Term Liabilities (Details) - USD ($)
$ in Millions
Sep. 30, 2016
Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Taxes payable $ 3.0 $ 1.3
Accrued compensation benefits 9.7 9.5
Other 17.3 17.0
Total $ 30.0 $ 27.8