Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash Flows From Operating Activities
Net Income	$ 92,241	$ 177,094
Adjustments to Reconcile Net Income to Net Cash Provided by (Used In) Operating Activities:
Net (Gains) Losses on Investments, Investment Securities and Contingent Consideration	(9,509)	4,456
Equity Method Investments, Including Gain on Sale	(890)	(786)
Equity-Based and Other Deferred Compensation	130,242	117,524
Noncash Lease Expense	11,045	10,094
Depreciation, Amortization and Accretion, net	5,287	7,219
Bad Debt Expense	3,734	(519)
Deferred Taxes	(2,514)	(1,942)
Decrease (Increase) in Operating Assets:
Investment Securities	1,676	(21)
Accounts Receivable	83,422	36,230
Receivable from Employees and Related Parties	1,268	1,460
Other Assets	82,271	(14,980)
(Decrease) Increase in Operating Liabilities:
Accrued Compensation and Benefits	(767,197)	(839,975)
Accounts Payable and Accrued Expenses	(1,132)	373
Payables to Employees and Related Parties	4,788	28,261
Taxes Payable	(6,217)	(4,462)
Other Liabilities	(13,252)	(6,246)
Net Cash Provided by (Used in) Operating Activities	(384,737)	(486,220)
Cash Flows From Investing Activities
Investments Purchased	(37)	0
Proceeds from Sale of Investments	0	18,300
Distributions of Private Equity Investments	72	20
Investment Securities:
Proceeds from Sales and Maturities of Investment Securities	1,409,643	1,325,038
Purchases of Investment Securities	(851,103)	(626,283)
Maturity of Certificates of Deposit	82,759	67,796
Purchase of Certificates of Deposit	(5,222)	(85,843)
Purchase of Furniture, Equipment and Leasehold Improvements	(4,858)	(5,491)
Net Cash Provided by Investing Activities	631,254	693,537
Cash Flows From Financing Activities
Issuance of Noncontrolling Interests	0	300
Distributions to Noncontrolling Interests	(9,202)	(4,740)
Purchase of Treasury Stock and Noncontrolling Interests	(286,592)	(283,126)
Dividends	(41,193)	(41,619)
Net Cash Provided by (Used in) Financing Activities	(336,987)	(329,185)
Effect of Exchange Rate Changes on Cash	6,472	(1,531)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	(83,998)	(123,399)
Cash, Cash Equivalents and Restricted Cash – Beginning of Period	672,123	587,293
Cash, Cash Equivalents and Restricted Cash – End of Period	588,125	463,894
SUPPLEMENTAL CASH FLOW DISCLOSURE
Payments for Interest	1,790	3,542
Payments for Income Taxes	33,255	36,867
Accrued Dividends	4,205	4,128
Amounts Due for Purchase of Noncontrolling Interest	0	1,448
Settlement of Sale of Trilantic VI	$ 0	$ 9,188