XML 73 R61.htm IDEA: XBRL DOCUMENT v3.19.1
Subsequent events (Details) - $ / shares
3 Months Ended 9 Months Ended
Apr. 16, 2019
Jan. 15, 2019
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2019
Mar. 31, 2018
Dividends [Abstract]            
Common stock, dividends declared (in dollars per share)     $ 0.1000 $ 0.0975 $ 0.3000 $ 0.2925
2019 Annual Dividend [Member]            
Dividends [Abstract]            
Common stock, dividends declared (in dollars per share)   $ 0.40        
Subsequent Event [Member] | 2019 Q3 Dividend [Member]            
Dividends [Abstract]            
Dividends payable, date declared Apr. 16, 2019          
Common stock, dividends declared (in dollars per share) $ 0.10          
Dividends payable, date of record May 15, 2019          
Dividends payable, date paid May 31, 2019          
Subsequent Event [Member] | 2019 Annual Dividend [Member]            
Dividends [Abstract]            
Common stock, dividends declared (in dollars per share) $ 0.40