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Subsequent Events Subsequent Events (Details) - $ / shares
3 Months Ended 9 Months Ended
May 04, 2018
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Subsequent Event [Line Items]          
Dividends declared per share   $ 0.37 $ 0.31 $ 0.99 $ 0.87
Subsequent Event [Member]          
Subsequent Event [Line Items]          
Dividends Payable, Date Declared May 04, 2018        
Dividends declared per share $ 0.37        
Dividends Payable, Date to be Paid Jun. 07, 2018        
Dividends Payable, Date of Record May 23, 2018