INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 40,663	$ 1,730	$ 124,187	$ (3,166)
Effective tax rate (as a percent)	29.90%	9.00%	25.90%	7.60%
Federal statutory income tax rate (as percent)	21.00%	21.00%	21.00%	21.00%
Potential increase (decrease) in uncertain tax liabilities			$ 3,200
Potential decrease in uncertain tax liabilities	$ 2,600		$ 2,600

Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns.

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