XML 48 R37.htm IDEA: XBRL DOCUMENT v3.19.1
Cash, Cash Equivalents and Restricted Cash (Schedule of Cash, Cash Equivalents and Restricted Cash) (Details) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Mar. 31, 2018
Dec. 31, 2017
Cash and Cash Equivalents [Line Items]        
Cash and cash equivalents $ 87.9 $ 123.1    
Restricted cash included in other current assets 30.5 30.3    
Restricted cash included in other long-term assets 6.3 6.3    
Total cash, cash equivalents and restricted cash $ 124.7 $ 159.7 $ 189.5 $ 244.8