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CONSOLIDATED FINANCIAL STATEMENT DETAILS - Cash and cash equivalents and Restricted cash (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Cash and cash equivalents:      
Cash on hand and balances with banks $ 207.9 $ 600.8  
Short-term deposits 141.1 425.0  
Total cash and cash equivalents 349.0 1,025.8 $ 827.0
Restricted cash:      
Restricted cash $ 12.7 $ 12.1