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Subsequent events (Details) - $ / shares
3 Months Ended
Apr. 26, 2023
Mar. 31, 2023
Mar. 31, 2022
Apr. 12, 2023
Dec. 31, 2022
Subsequent Event [Line Items]          
Dividends declared per share (in usd per share)   $ 0.28 $ 0.28    
Preferred stock, par value per share (in usd per share)   $ 0.01     $ 0.01
Subsequent event          
Subsequent Event [Line Items]          
Dividends declared per share (in usd per share) $ 0.28        
Preferred stock, par value per share (in usd per share)       $ 0.01  
Subsequent event | Emerson Electric Co          
Subsequent Event [Line Items]          
Shares issued, price per share (in usd per share)       $ 60.00