Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Cash Flows From Operating Activities
Net Income	$ 78,200	$ 109,736
Adjustments to Reconcile Net Income to Net Cash Provided by (Used In) Operating Activities:
Net (Gains) Losses on Investments, Marketable Securities and Contingent Consideration	(6,207)	(210)
Equity Method Investments	(910)	(384)
Equity-Based and Other Deferred Compensation	96,951	67,626
Depreciation, Amortization and Accretion	16,614	6,712
Bad Debt Expense	1,353	1,025
Deferred Taxes	(6,598)	(438)
Decrease (Increase) in Operating Assets:
Marketable Securities	(49)	(101)
Financial Instruments Owned and Pledged as Collateral at Fair Value	5,741	(972)
Securities Purchased Under Agreements to Resell	(5,887)	799
Accounts Receivable	(47,194)	(37,303)
Receivable from Employees and Related Parties	1,654	(3,708)
Other Assets	(3,382)	614
(Decrease) Increase in Operating Liabilities:
Accrued Compensation and Benefits	(519,492)	(177,635)
Accounts Payable and Accrued Expenses	(1,257)	2,468
Securities Sold Under Agreements to Repurchase	119	169
Payables to Employees and Related Parties	13,141	13,640
Taxes Payable	(32,606)	(11,988)
Other Liabilities	(2,939)	(10,735)
Net Cash Provided by (Used in) Operating Activities	(412,748)	(40,685)
Cash Flows From Investing Activities
Investments Purchased	(2,440)	0
Distributions of Private Equity Investments	364	270
Marketable Securities:
Proceeds from Sales and Maturities	136,606	23,347
Purchases	(138,493)	(54,840)
Maturity of Certificates of Deposit	100,000	63,527
Purchase of Furniture, Equipment and Leasehold Improvements	(15,644)	(4,151)
Net Cash Provided by Investing Activities	80,393	28,153
Cash Flows From Financing Activities
Issuance of Noncontrolling Interests	0	60
Distributions to Noncontrolling Interests	(17,984)	(13,193)
Short-Term Borrowings	30,000	30,000
Repayment of Short-Term Borrowings	0	(30,000)
Repayment of Subordinated Borrowings	0	(6,700)
Purchase of Treasury Stock and Noncontrolling Interests	(107,693)	(155,597)
Dividends	(27,471)	(16,538)
Net Cash Provided by (Used in) Financing Activities	(123,148)	(191,968)
Effect of Exchange Rate Changes on Cash	3,868	3,473
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	(451,635)	(201,027)
Cash, Cash Equivalents and Restricted Cash-Beginning of Period	800,096	617,385
Cash, Cash Equivalents and Restricted Cash-End of Period	348,461	416,358
SUPPLEMENTAL CASH FLOW DISCLOSURE
Payments for Interest	6,297	6,868
Payments for Income Taxes	50,736	19,833
Accrued Dividends	3,336	2,631
Purchase of Noncontrolling Interest	$ 0	$ 9,164

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The cash flow from investments sold under the agreement to repurchase such investment.

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The net cash flow from purchases followed by sales of securities under terms of reverse repurchase agreements.

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The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period.

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The cash inflow from a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

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