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Subsequent Events (Details) - Dividends [Domain] - USD ($)
$ / shares in Units, $ in Millions
Sep. 07, 2018
Aug. 24, 2018
Jul. 19, 2018
Subsequent Event [Line Items]      
Dividends Payable, Date Declared     Jul. 19, 2018
Quarterly dividend, value per share $ 0.16    
Quarterly dividend, date to be paid Sep. 07, 2018    
Quarterly dividend, date of record   Aug. 24, 2018  
Quarterly dividend, amount declared $ 22.1