Equity - Common Stock Share Activity (Details) - shares	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Class of Stock [Line Items]
Beginning balance - shares Issued (in shares)	220,000	0
Ending balance - shares Issued (in shares)		220,000	0
Ending balance - shares outstanding (in shares)	0	0
Preferred Stock
Class of Stock [Line Items]
Equity Unit offering (in shares)		220,000
Ending balance - shares Issued (in shares)	220,000
Ending balance - shares outstanding (in shares)	220,000	220,000	0
Common Stock
Class of Stock [Line Items]
Beginning balance - shares Issued (in shares)	209,843,296	209,514,044	209,304,129
Beginning balance - shares Outstanding (in shares)	209,216,135	208,354,438	209,004,789
Employee and director plans - shares Issued/Treasury (in shares)	717,198	329,252	209,915
Treasury stock acquired (in shares)	900,000	0	950,000
Reacquired common stock – employee and director plans	(250,273)	(21,870)	(90,316)
Ending balance - shares Issued (in shares)	210,560,494	209,843,296	209,514,044
Ending balance - shares Outstanding (in shares)	209,582,212	209,216,135	208,354,438
Employee and director plans - shares Outstanding (in shares)	1,516,350	883,567	389,965
Common Stock | Treasury stock
Class of Stock [Line Items]
Beginning balance - shares Outstanding (in shares)	(627,161)	(1,159,606)	(299,340)
Employee and director plans - shares Issued/Treasury (in shares)	799,152	554,315	180,050
Treasury stock acquired (in shares)	900,000		950,000
Reacquired common stock – employee and director plans	(250,273)	(21,870)	(90,316)
Ending balance - shares Outstanding (in shares)	(978,282)	(627,161)	(1,159,606)