XML 90 R70.htm IDEA: XBRL DOCUMENT v3.19.2
Supplemental Information (Details) - USD ($)
$ in Millions
Jun. 30, 2019
Dec. 31, 2018
Jun. 30, 2018
Dec. 31, 2017
Supplemental Cash Flow Elements [Abstract]        
Cash and cash equivalents $ 177.4 $ 112.2    
Restricted cash 0.2 0.2    
Total cash, cash equivalents and restricted cash $ 177.6 $ 112.4 $ 191.3 $ 179.3