CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 2,132,859	$ 110,747	$ 64,853
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 $31,769 for the fiscal year 2022	93,020
Foreign currency translation adjustments	(169,266)	(2,922)	18,877
Unrealized gain (losses) on marketable securities, net of tax effects of $(3,729), $0, and $0 for the fiscal year 2022, 2021, and 2020	(10,908)		7
Actuarial gains (losses), net of tax effects of $121, ($77), and $27 for the fiscal years 2022, 2021, and 2020	454	354	(476)
Total other comprehensive (loss) income, net of tax	(103,267)	(2,568)	18,408
Comprehensive income	$ 2,029,592	$ 108,179	$ 83,261