Fair Value Measurements (Tables)

9 Months Ended

Jun. 30, 2023

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

	As of June 30, 2023
Description	Total Fair Value		Level 1		Level 2		Level 3
Assets:
Cash equivalents	$	589,326	$	589,326	$	—	$	—
Available-for-sale securities		559,914		127,592		432,322		—
Net investment hedge		984		—		984		—
Total assets	$	1,150,224	$	716,918	$	433,306	$	—
Liabilities:
Foreign exchange contracts		428		—		428		—
Total liabilities	$	428	$	—	$	428	$	—

	As of September 30, 2022
Description	Total Fair Value		Level 1		Level 2		Level 3
Assets:
Cash equivalents	$	374,804	$	374,055	$	749	$	—
Available-for-sale securities		1,263,782		651,800		611,982		—
Foreign exchange contracts		634		—		634		—
Net investment hedge		124,789		—		124,789		—
Total assets	$	1,764,009	$	1,025,855	$	738,154	$	—
Liabilities:
Foreign exchange contracts		230	$	—		230		—
Total liabilities	$	230	$	—	$	230	$	—