STOCK COMPENSATION - Performance Shares (Details) - $ / shares	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2021
Number of Units
Shares outstanding, beginning of period (in shares)	370,151	474,348
Granted (in shares)	181,117	135,417	60,984,000
Vested (in shares)	(288,734)	(229,803)
Forfeited or expired (in shares)	(13,864)	(9,811)
Shares outstanding, end of period (in shares)	248,670	370,151
Weighted Average Fair Value at Grant
Shares outstanding, beginning of period (in dollars per share)	$ 35.87	$ 36.52
Granted (in dollars per share)	50.61	36.68
Vested (in dollars per share)	40.22	37.46
Forfeited or expired (in dollars per share)	42.49	41.14
Shares outstanding, end of period (in dollars per share)	$ 41.19	$ 35.87
PSUs
Number of Units
Shares outstanding, beginning of period (in shares)	155,804	96,689
Granted (in shares)	52,125	59,115
Vested (in shares)	(60,984)	0
Forfeited or expired (in shares)	(4,483)	0
Shares outstanding, end of period (in shares)	142,462	155,804
Weighted Average Fair Value at Grant
Shares outstanding, beginning of period (in dollars per share)	$ 41.20	$ 42.59
Granted (in dollars per share)	49.61	38.94
Vested (in dollars per share)	55.47	0
Forfeited or expired (in dollars per share)	44.59	0
Shares outstanding, end of period (in dollars per share)	$ 47.24	$ 41.20
Target Performance Share Units
Number of Units
Granted (in shares)		47,252,000