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Related Party Transactions and Transactions with Grace - Related Party Expenses and Agreements (Details) - W.R. Grace & Co. - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Feb. 03, 2016
Feb. 02, 2016
Mar. 31, 2016
Mar. 31, 2015
Related Party Transaction [Line Items]        
Allocated general corporate expenses   $ 2.0   $ 13.8
Indemnified receivables, tax     $ 4.4  
Maximum        
Related Party Transaction [Line Items]        
Transition period 18 months