Non-Controlling Interests - Schedule of the Ownership Interest in Noncontrolling Interest (Details) - Tradeweb Markets LLC - shares |
9 Months Ended | ||
|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
|
| Non-Controlling Interests | |||
| Number of LLC Interests held by Tradeweb Markets Inc. (in shares) | 209,075,237 | 213,373,468 | |
| Number of LLC Interests held by non-controlling interests (in shares) | 23,056,868 | 23,057,268 | |
| Total LLC Interests outstanding (in shares) | 232,132,105 | 236,430,736 | |
| Number of LLC Interests held by Tradeweb Markets Inc. | 90.10% | 90.20% | 90.20% |
| Number of LLC Interests held by non-controlling interests | 9.90% | 9.80% | 9.80% |
| Total LLC Interests outstanding | 100.00% | 100.00% | |