Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net income	$ 138,539	$ 135,768
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	49,037	43,468
Amortization of right-of-use lease assets	16,564	17,536
Stock-based compensation	93,750	83,863
Loss on investment	0	34,847
Other non-cash items, net	(2,089)	(110)
Changes in operating assets and liabilities, excluding the effects of acquisitions:
Accounts receivable	86,478	12,310
Accounts payable and accrued expenses	11,110	(23,388)
Accrued compensation and benefits	(18,468)	(16,544)
Deferred revenue	36,092	47,012
Accrued income taxes	(12,169)	(6,279)
Other current assets and prepaid expenses	(786)	(20,569)
Operating lease liabilities	4,985	(3,360)
Other noncurrent assets and liabilities	(11,174)	(24,493)
Net cash provided by operating activities	391,869	280,061
Cash flows from investing activities:
Additions to property and equipment	(12,950)	(5,510)
Acquisitions of businesses, net of cash acquired	(828,271)	0
Proceeds from sale of investments	0	42,693
Purchases of investments	(5,823)	0
Purchase of intangible assets	0	(4,454)
Settlement of net investment hedges	(12,544)	11,308
Divestitures of businesses and assets, net	(154)
Net cash provided by (used in) investing activities	(859,742)	44,037
Cash flows from financing activities:
Borrowings under credit facility	1,130,000	0
Repayments of borrowings under credit facility	(564,000)	(175,000)
Repurchases of common stock	0	(125,000)
Proceeds from issuance of common stock	10,592	10,857
Payments of withholding taxes in connection with stock-based awards	(56,022)	(50,595)
Payments of principal for financing leases	(217)	(239)
Credit facility origination costs	(13,355)	0
Net cash provided by (used in) financing activities	506,998	(339,977)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	9,181	(3,739)
Net change in cash, cash equivalents, and restricted cash	48,306	(19,618)
Cash, cash equivalents, and restricted cash, beginning of period	272,888	327,046
Cash, cash equivalents, and restricted cash, end of period	$ 321,194	$ 307,428