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Contractual Obligation, Contractual Term

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Revenue, Term Of Contract

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Securities Lending Agreement, Fixed Term, Number Of Agreements

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Securities Lending Agreement, Fixed Term, Number Of Counterparties

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Securities Lending Agreement, Number Of Agreements

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Securities Lending Agreement, Number Of Financial Institution Counterparties

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Share-based Compensation Arrangement by Share-based Payment Award, Number Of Service Periods

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Short Term Settlement, Period

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Threshold period for when accounts receivable, classified as noncurrent, is considered past due to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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-Subparagraph (b)
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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 10
-Name Accounting Standards Codification
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Amount of contractual obligation, including, but not limited to, long-term debt, lease obligation, purchase obligation, and other commitments.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of cost for defined contribution plan.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
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Percentage employer matches of the employee's percentage contribution matched.

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- Definition

The amount of securities on deposit with clearing organizations and other entities which provide services necessary to operations of the Company. This item would include, for instance, securities advanced as refundable collateral for securities borrowed.

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
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- Definition

The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 730
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Amount of cash restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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No definition available.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) shares in Millions, $ in Millions			12 Months Ended
	Aug. 31, 2021 shares	Aug. 02, 2021 shares	Dec. 31, 2023 USD ($) period institution agreement segment counterparty	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Subsidiary, Sale of Stock [Line Items]
Number of operating segments \| segment			1
Revenue contract term			30 days
Brokerage and transaction costs				$ 57
Advertising costs			$ 74	52	$ 101
Share-based compensation			$ 871	654	1,572
Defined contribution plan, employer matching contribution, percent of match			3.00%
Expense incurred related to defined contribution 401(k) plan			$ 12	14	10
Research and development expense			$ 349	381	438
Number of service periods \| period			2
Restricted cash in other current assets, end of the period			$ 46	1	1
Restricted cash, noncurrent			$ 17	22	24
Number of financial institution counterparties \| institution			2
Number of agreements with contractual term of 30 days \| agreement			1
Number of fixed term agreements \| agreement			2
Number of fixed term counterparties \| counterparty			2
Short-term settlement, period			30 days
Threshold period past due, writeoff			180 days
Securities pledged to clearing organization			$ 338	186
General and administrative
Subsidiary, Sale of Stock [Line Items]
Share-based compensation			640	$ 425	$ 885
U.S. Treasury securities
Subsidiary, Sale of Stock [Line Items]
Securities pledged to clearing organization			$ 50
Agreement One
Subsidiary, Sale of Stock [Line Items]
Contractual term			30 days
Contractual obligation			$ 25
Agreement Two
Subsidiary, Sale of Stock [Line Items]
Contractual term			21 days
Contractual obligation			$ 35
Stock options
Subsidiary, Sale of Stock [Line Items]
Share-based compensation			$ 4
Dividend yield			0.00%	0.00%
Time-Based RSUs
Subsidiary, Sale of Stock [Line Items]
Share-based compensation			$ 292
Time-Based RSUs \| Maximum
Subsidiary, Sale of Stock [Line Items]
Requisite service period			4 years
Time-Based RSUs \| Minimum
Subsidiary, Sale of Stock [Line Items]
Requisite service period			1 year
Market-Based RSUs
Subsidiary, Sale of Stock [Line Items]
Share-based compensation			$ 567
Requisite service period			6 years
Market-Based RSUs \| General and administrative
Subsidiary, Sale of Stock [Line Items]
Share-based compensation			$ 485
IPO \| Common Class A
Subsidiary, Sale of Stock [Line Items]
Shares issued (in shares) \| shares		55.0
Over-Allotment Option \| Common Class A
Subsidiary, Sale of Stock [Line Items]
Shares issued (in shares) \| shares	4.4