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Subsequent events (Details) - $ / shares
3 Months Ended
Oct. 19, 2022
Jan. 19, 2022
Sep. 30, 2022
Sep. 30, 2021
Dividends [Abstract]        
Common stock, dividends declared (in dollars per share)     $ 0.14 $ 0.13
2022 Annual Dividend [Member]        
Dividends [Abstract]        
Common stock, dividends declared (in dollars per share)   $ 0.56    
Subsequent Event [Member] | 2022 Annual Dividend [Member]        
Dividends [Abstract]        
Common stock, dividends declared (in dollars per share) $ 0.56      
Subsequent Event [Member] | 2023 Q1 Dividend [Member]        
Dividends [Abstract]        
Dividends payable, date declared Oct. 19, 2022      
Common stock, dividends declared (in dollars per share) $ 0.14      
Dividends payable, date of record Nov. 15, 2022      
Dividends payable, date to be paid Nov. 30, 2022