Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Common Stock Class C Common Stock	Common Stock Class D Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Non- Controlling Interests
Beginning balance at Dec. 31, 2023	$ 5,931,406	$ 1	$ 1	$ 0	$ 0	$ 4,738,758	$ (5,389)	$ 640,384	$ 557,651
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from equity incentive plans	2,807					2,807
Issuance of common stock for business acquisitions	36,692					36,692
Tax receivable agreement liability and deferred taxes arising from LLC Interest ownership exchanges and the issuance of common stock from equity incentive plans	18,358					18,358
Adjustments to non-controlling interests	0					1,333	(3)		(1,330)
Distributions to non-controlling interests	(6,095)								(6,095)
Dividends	(21,286)							(21,286)
Stock-based compensation expense	16,959					16,959
Payroll taxes paid for stock-based compensation	(43,832)					(43,832)
Net income	143,382							126,142	17,240
Other comprehensive income (loss)	(2,364)						(2,132)		(232)
Ending balance at Mar. 31, 2024	6,076,027	1	1	0	0	4,771,075	(7,524)	745,240	567,234
Beginning balance at Dec. 31, 2023	5,931,406	1	1	0	0	4,738,758	(5,389)	640,384	557,651
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	410,021
Other comprehensive income (loss)	7,211
Ending balance at Sep. 30, 2024	6,286,391	1	1	0	0	4,788,780	1,115	910,750	585,744
Beginning balance at Mar. 31, 2024	6,076,027	1	1	0	0	4,771,075	(7,524)	745,240	567,234
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from equity incentive plans	2,021					2,021
Tax receivable agreement liability and deferred taxes arising from LLC Interest ownership exchanges and the issuance of common stock from equity incentive plans	761					761
Adjustments to non-controlling interests	0					(2,198)			2,198
Distributions to non-controlling interests	(9,963)								(9,963)
Dividends	(21,321)							(21,321)
Stock-based compensation expense	24,350					24,350
Payroll taxes paid for stock-based compensation	(447)					(447)
Net income	136,416							119,239	17,177
Other comprehensive income (loss)	(439)						(396)		(43)
Ending balance at Jun. 30, 2024	6,207,405	1	1	0	0	4,795,562	(7,920)	843,158	576,603
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from equity incentive plans	1,915					1,915
Issuance of common stock for business acquisitions	3,333					3,333
Share repurchases pursuant to share repurchase programs	(25,004)							(25,004)
Tax receivable agreement liability and deferred taxes arising from LLC Interest ownership exchanges and the issuance of common stock from equity incentive plans	(36,164)					(36,164)
Adjustments to non-controlling interests	0					(623)			623
Distributions to non-controlling interests	(8,768)								(8,768)
Dividends	(21,320)							(21,320)
Stock-based compensation expense	26,858					26,858
Payroll taxes paid for stock-based compensation	(2,101)					(2,101)
Net income	130,223							113,916	16,307
Other comprehensive income (loss)	10,014						9,035		979
Ending balance at Sep. 30, 2024	6,286,391	1	1	0	0	4,788,780	1,115	910,750	585,744
Beginning balance at Dec. 31, 2024	6,398,885	1	1	0	0	4,813,408	(9,981)	996,763	598,693
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Tax receivable agreement liability and deferred taxes arising from LLC Interest ownership exchanges and the issuance of common stock from equity incentive plans	28,830					28,830
Adjustments to non-controlling interests	0					3,795	(1)		(3,794)
Distributions to non-controlling interests	(7,416)								(7,416)
Dividends	(25,573)							(25,573)
Stock-based compensation expense	22,708					22,708
Payroll taxes paid for stock-based compensation	(47,590)					(47,590)
Net income	168,305							148,382	19,923
Other comprehensive income (loss)	9,056						8,171		885
Ending balance at Mar. 31, 2025	6,547,205	1	1	0	0	4,821,151	(1,811)	1,119,572	608,291
Beginning balance at Dec. 31, 2024	6,398,885	1	1	0	0	4,813,408	(9,981)	996,763	598,693
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	554,376
Other comprehensive income (loss)	19,881
Ending balance at Sep. 30, 2025	6,934,963	1	1	0	0	4,865,172	7,749	1,407,775	654,265
Beginning balance at Mar. 31, 2025	6,547,205	1	1	0	0	4,821,151	(1,811)	1,119,572	608,291
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Tax receivable agreement liability and deferred taxes arising from LLC Interest ownership exchanges and the issuance of common stock from equity incentive plans	(3,352)					(3,352)
Adjustments to non-controlling interests	0					(2,544)			2,544
Distributions to non-controlling interests	(5,112)								(5,112)
Dividends	(25,606)							(25,606)
Stock-based compensation expense	27,779					27,779
Payroll taxes paid for stock-based compensation	(44)					(44)
Net income	175,522							153,782	21,740
Other comprehensive income (loss)	9,884						8,842		1,042
Ending balance at Jun. 30, 2025	6,726,276	1	1	0	0	4,842,990	7,031	1,247,748	628,505
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Tax receivable agreement liability and deferred taxes arising from LLC Interest ownership exchanges and the issuance of common stock from equity incentive plans	(1,210)					(1,210)
Adjustments to non-controlling interests	0					(2,254)			2,254
Distributions to non-controlling interests	(1,630)								(1,630)
Dividends	(25,609)							(25,609)
Stock-based compensation expense	26,865					26,865
Payroll taxes paid for stock-based compensation	(1,219)					(1,219)
Net income	210,549							185,636	24,913
Other comprehensive income (loss)	941						718		223
Ending balance at Sep. 30, 2025	$ 6,934,963	$ 1	$ 1	$ 0	$ 0	$ 4,865,172	$ 7,749	$ 1,407,775	$ 654,265