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Participating Securities, Distributed and Undistributed Earnings (Loss), Shares

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- Definition

Voting power percentage.

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No definition available.

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- Definition

Face amount or stated value per share of common stock.

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- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Organization (Details) - $ / shares	3 Months Ended		6 Months Ended
Organization (Details) - $ / shares	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Weighted average unvested RSUs and unsettled vested PRSUs that were considered participating securities (in shares)	76,426	0	80,778	0
Dilutive securities (in shares)	2,771,640		3,088,966
Class C Common Stock
Common stock, par value (in dollars per share)	$ 0.00001		$ 0.00001		$ 0.00001
Class D Common Stock
Common stock, par value (in dollars per share)	0.00001		0.00001		0.00001
Class A Common Stock
Common stock, par value (in dollars per share)	0.00001		0.00001		0.00001
Class B Common Stock
Common stock, par value (in dollars per share)	$ 0.00001		$ 0.00001		$ 0.00001
Tradeweb Markets LLC
Ownership interest	87.20%	86.90%	87.20%	86.90%	86.90%
Ownership percentage, continuing LLC Owners	12.80%	13.10%	12.80%	13.10%	13.10%
Tradeweb Markets LLC \| Refinitiv
Ownership interest	51.10%		51.10%
Tradeweb Markets LLC \| Public Investors
Ownership percentage, continuing LLC Owners	45.90%		45.90%
Tradeweb Markets LLC \| Class C and Class D Common Stock \| Bank Stockholders
Ownership percentage, continuing LLC Owners	2.90%		2.90%
Tradeweb Markets Inc \| Refinitiv
Ownership interest	88.10%		88.10%
Tradeweb Markets Inc \| Public Investors
Voting power percentage	7.90%		7.90%
Tradeweb Markets Inc \| Class C Common Stock \| Bank Stockholders
Number of share owned (in shares)	1,654,825		1,654,825
Tradeweb Markets Inc \| Class D Common Stock \| Refinitiv
Number of share owned (in shares)	22,988,329		22,988,329
Tradeweb Markets Inc \| Class D Common Stock \| Bank Stockholders
Number of share owned (in shares)	5,220,129		5,220,129
Tradeweb Markets Inc \| Class D Common Stock \| Other Stockholders
Number of share owned (in shares)	108,375		108,375
Voting power percentage	0.10%		0.10%
Tradeweb Markets Inc \| Class A Common Stock \| Public Investors
Number of share owned (in shares)	107,615,695		107,615,695
Tradeweb Markets Inc \| Class B Common Stock \| Refinitiv
Number of share owned (in shares)	96,933,192		96,933,192
Tradeweb Markets Inc \| Class C and Class D Common Stock \| Bank Stockholders
Ownership percentage, continuing LLC Owners	0.10%		0.10%
Voting power percentage	4.00%		4.00%