Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Common stock, dividends per share declared (in dollars per share)	$ 0.755	$ 0.72	$ 1.51	$ 1.44
Preferred stock dividends per share declared (in dollars per share)	$ 0.36875	$ 0.36875	$ 0.7375	$ 0.7375