Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating activities:
Net income	$ 550,985	$ 584,201
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	143,264	160,749
Stock-based compensation expense	77,543	81,702
Deferred taxes	2,476	449
Loss on impairment of lease related assets	37,546	0
Reduction in the carrying amount of operating lease right-of-use assets	52,686	56,162
Amortization and write-off of deferred financing fees	3,420	3,036
Gain on de-designated swaps	(51,745)	(12,149)
Changes in assets and liabilities:
Fees receivable, net	258,543	257,541
Deferred commissions	96,841	6,783
Prepaid expenses and other current assets	(19,936)	(18,418)
Other assets	6,371	(23,979)
Deferred revenues	92,527	103,565
Accounts payable and accrued and other liabilities	(352,208)	(121,958)
Cash provided by operating activities	898,313	1,077,684
Investing activities:
Additions to property, equipment and leasehold improvements	(70,461)	(38,670)
Acquisitions - cash paid (net of cash acquired)	(4,109)	(23,030)
Cash used in investing activities	(74,570)	(61,700)
Financing activities:
Proceeds from employee stock purchase plan	16,980	13,527
Proceeds from borrowings	0	600,000
Payments of deferred financing fees	0	(7,320)
Payments on revolving credit facility	0	(5,000)
Payments on borrowings	(3,996)	(106,585)
Purchases of treasury stock	(1,026,414)	(1,438,808)
Cash used in financing activities	(1,013,430)	(944,186)
Net (decrease) increase in cash and cash equivalents and restricted cash	(189,687)	71,798
Effects of exchange rates on cash and cash equivalents	(42,228)	(14,651)
Cash and cash equivalents and restricted cash, beginning of period	760,602	712,583
Cash and cash equivalents and restricted cash, end of period	$ 528,687	$ 769,730