STOCK-BASED COMPENSATION - Summary of the Status of Performance Share Units and Changes in Performance Share Units Outstanding (Details) - Performance Share Units	9 Months Ended
	Jun. 30, 2022 shares $ / shares
Performance Units
Outstanding beginning balance (in shares)	699,000
Granted (in shares)	227,000
Vested (in shares)	(161,000)
Dividend equivalent right performance units credited (in shares)	11,000
Forfeited (in shares)	(54,000)
Outstanding ending balance (in shares)	722,000
Weighted Average Grant Date Fair Value per Share
Outstanding beginning balance (in dollars per share) | $ / shares	$ 41.55
Granted (in dollars per share) | $ / shares	30.12
Vested (in dollars per share) | $ / shares	62.66
Dividend equivalent right performance units credited (in dollars per share) | $ / shares	32.47
Forfeited (in dollars per share) | $ / shares	34.16
Outstanding ending balance (in dollars per share) | $ / shares	$ 33.67
Specified performance criteria met (in shares)	96,197
Vested and expected to vest (in shares)	1,097,404