Non-Controlling Interests - Schedule of the Impact on Equity Due to Changes in the Company’s Ownership Interest in Noncontrolling Interest (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Noncontrolling Interest [Abstract] | ||||
| Net income attributable to Tradeweb Markets Inc. | $ 197,457 | $ 185,636 | $ 584,059 | $ 487,800 |
| Increase/(decrease) in Tradeweb Markets Inc.’s additional paid-in capital as a result of ownership changes in TWM LLC | 12,215 | 34,172 | ||
| Increase/(decrease) in Tradeweb Markets Inc.’s additional paid-in capital as a result of ownership changes in TWM LLC | (2,254) | (1,003) | ||
| Net transfers (to) from non-controlling interests | 12,215 | (2,254) | 34,172 | (1,003) |
| Change from net income attributable to Tradeweb Markets Inc. and transfers (to) from non-controlling interests | $ 209,672 | $ 183,382 | $ 618,231 | $ 486,797 |
| X | ||||||||||
- Definition The amount of net income (loss) attributable to parent and transfers (to) from noncontrolling interests. No definition available.
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| X | ||||||||||
- Definition Amount of net transfers from (to) non controlling interest. No definition available.
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| X | ||||||||||
- Definition Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of increase in noncontrolling interest from subsidiary issuance of equity interests to noncontrolling interest holders. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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