Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 97,445	$ 81,565
Foreign currency translation adjustments, with no tax benefit for each of the three months ended March 31, 2022 and 2021	(4,098)	(343)
Other comprehensive income (loss), net of tax	(4,098)	(343)
Comprehensive income	93,347	81,222
Less: Net income attributable to non-controlling interests	14,480	13,706
Less: Foreign currency translation adjustments attributable to non-controlling interests	(530)	(46)
Comprehensive income attributable to Tradeweb Markets Inc.	79,397	67,562
Comprehensive income - Tradeweb Markets Inc.
Net income attributable to Tradeweb Markets Inc.	82,965	67,859
Foreign currency translation adjustments attributable to Tradeweb Markets Inc.	(3,568)	(297)
Comprehensive income - Non-controlling interests
Comprehensive income attributable to non-controlling interests	$ 13,950	$ 13,660