CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (9,570)	$ 39,166	$ 2,153,624	$ 88,942
Other comprehensive (loss) income, net of tax:
Foreign currency translation reclassification adjustments included in income from discontinued operation (Note 2)			(16,567)
Net investment hedge currency translation adjustment, net of tax effects of $13,815 and $16,733, respectively, for the three and nine months ended June 30, 2022	41,956		49,081
Foreign currency translation adjustments	(70,179)	4,003	(85,160)	4,721
Unrealized loss on marketable securities, net of tax effects of $(911) and $(1,809), respectively, for the three and nine months ended June 30, 2022	(2,898)		(5,306)
Actuarial gains, net of tax effects of $7 and $27 during the three and nine months ended June 30, 2022, ($2) and $4 during the three and nine months ended June 30, 2021	26	(21)	108	(20)
Total other comprehensive (loss) income, net of tax	(31,095)	3,982	(57,844)	4,701
Comprehensive (loss) income	$ (40,665)	$ 43,148	$ 2,095,780	$ 93,643