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Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Capital expenditures incurred but not yet paid $ 4.9 $ 10.6  
Treasury stock purchased but not yet paid   10.0  
Other Current Assets [Member]      
Restricted Cash 0.8 0.8 $ 0.8
Other Assets [Member]      
Restricted Cash $ 5.9 $ 6.9 $ 6.1