Stock Incentive Plans - Schedule of Share-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation recorded within Compensation and benefits	$ 180,739	$ 160,743	$ 142,660
Property and equipment (capitalized internal-use software)	4,492	0	0
Total share-based compensation expense	185,231	160,743	142,660
Restricted stock units
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation recorded within Compensation and benefits	99,648	76,094	59,652
Stock options
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation recorded within Compensation and benefits	26,323	28,816	31,231
Executive Chairman Long-Term Performance Award \| Chief Executive Officer
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation recorded within Compensation and benefits	53,214	53,214	38,189
Employee Stock Purchase Plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation recorded within Compensation and benefits	1,554	2,619	1,946
Secondary sales of common stock
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation recorded within Compensation and benefits	$ 0	$ 0	$ 11,642

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479830/718-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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