Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Cash Flow Cash, Cash Equivalents, and Restricted Cash

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Consolidated Statements of Cash Flow Cash, Cash Equivalents, and Restricted Cash - USD ($)
$ in Millions
Dec. 31, 2018
Sep. 30, 2018
Dec. 31, 2017
Sep. 30, 2017
Supplemental Cash Flow Elements [Abstract]        
Cash and cash equivalents $ 64.8 $ 56.0 $ 77.8  
Restricted cash and cash equivalents 0.5   0.5  
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents $ 65.3 $ 56.5 $ 78.3 $ 66.7