Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Common stock, dividends per share declared (in dollars per share)	$ 0.72	$ 0.685	$ 2.16	$ 2.055
Preferred stock dividends per share declared (in dollars per share)	$ 0.36875	$ 0.36875	$ 1.10625	$ 1.10625