Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 542,545	$ 402,692	$ 297,716
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization of property	38,315	35,095	35,572
Noncash lease expense	74,024	64,714	60,053
Currency translation adjustment reclassification	23,645
Amortization of deferred expenses and share-based incentive compensation	394,114	346,926	365,821
Amortization and other acquisition-related costs	60	1,795	19,410
Deferred tax provision	90,643	47,148	24,872
Provision (benefit) pursuant to tax receivable agreement	2,199	(439)	(503)
Loss on extinguishment of debt			6,505
(Increase) decrease in operating assets and increase (decrease) in operating liabilities:
Receivables-net	(81,609)	(72,154)	35,692
Investments	(458,593)	(198,556)	54,828
Other assets	(33,410)	1,353	(131,700)
Accrued compensation and benefits and other liabilities	274,146	(52,643)	(90,313)
Net cash provided by operating activities	866,079	575,931	677,953
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to property	(39,698)	(64,286)	(42,757)
Disposals of property	642	1,347	509
Net cash used in investing activities	(39,056)	(62,939)	(42,248)
Proceeds from:
Issuance of senior debt, net of expenses			492,032
Customer deposits, net	350,868		211,997
Contributions from noncontrolling interests	334	423	1,765
Payments for:
Senior debt			(255,746)
Customer deposits, net		(143,046)
Distributions to noncontrolling interests	(11,398)	(2,861)	(13,260)
Payments under tax receivable agreement	(10,215)	(25,454)	(23,701)
Purchase of Class A common stock	(406,149)	(95,227)	(494,687)
Class A common stock dividends	(195,944)	(196,598)	(254,924)
Settlement of share-based incentive compensation in satisfaction of tax withholding requirements	(68,013)	(72,636)	(99,959)
LFI Consolidated Funds redemptions	(20,915)
Other financing activities	(8,380)	(11,952)	(7,567)
Net cash provided by (used in) financing activities	195,836	(547,351)	(444,050)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS AND RESTRICTED CASH	(161,672)	147,627	(27,981)
NET INCREASE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH	861,187	113,268	163,674
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH— January 1	2,568,827	2,455,559	2,291,885
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH— December 31	3,430,014	$ 2,568,827	$ 2,455,559
LGAC [Member]
Proceeds from:
LGAC IPO	575,000
Payments for:
Payments of LGAC IPO underwriting fees and other offering costs	$ (9,352)