v3.26.1
Earnings Per Share - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Denominator:    
Weighted average shares of Class A and Class B common stock outstanding - Basic (in shares) 212,685,136 213,087,496
Dilutive effect (in shares) 639,512  
Weighted average shares of Class A and Class B common stock outstanding - Diluted (in shares) 213,324,648 214,895,418
Numerator:    
Net income attributable to Tradeweb Markets Inc. $ 205,284 $ 148,382
Less: Distributed and undistributed earnings allocated to participating securities (76) (129)
Net income attributable to outstanding shares of Class A and Class B common stock - Basic 205,208 148,253
Net income attributable to outstanding shares of Class A and Class B common stock - Diluted $ 205,208 $ 148,253
Earnings per share - Basic (in dollars per share) $ 0.96 $ 0.70
Earnings per share - Diluted (in dollars per share) $ 0.96 $ 0.69
Weighted average unvested RSUs and unsettled vested PRSUs that were considered participating securities (in shares) 78,389 185,309
PRSUs    
Denominator:    
Dilutive effect (in shares) 0 434,441
Options    
Denominator:    
Dilutive effect (in shares) 219,311 289,873
RSUs and RSAs    
Denominator:    
Dilutive effect (in shares) 401,067 553,747
PSUs    
Denominator:    
Dilutive effect (in shares) 19,134 529,861