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INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income tax benefit	$ (36,624)	$ (113,413)	$ (54,739)	$ (99,275)
Effective tax rate	22.90%	21.20%	21.40%	20.30%
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
Adjustment tax expense related to equity compensation			$ 4,100	$ 2,400

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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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