STOCK-BASED COMPENSATION - Schedule of the Status of Restricted Stock Awards and Changes in Restricted Stock Outstanding (Details) shares in Thousands	6 Months Ended
	Mar. 31, 2023 $ / shares shares
Restricted Stock
Shares
Outstanding (in shares)	1,493
Granted (in shares)	588
Vested (in shares)	(708)
Forfeited (in shares)	(8)
Outstanding (in shares)	1,365
Weighted-Average Grant Date Fair Value per Share
Outstanding (in dollars per share) | $ / shares	$ 30.85
Granted (in dollars per share) | $ / shares	44.53
Vested (in dollars per share) | $ / shares	33.95
Forfeited (in dollars per share) | $ / shares	33.93
Outstanding (in dollars per share) | $ / shares	$ 35.12
Phantom Share Units (PSUs)
Shares
Granted (in shares)	12,591
Vested (in shares)	(14,199)