XML 42 R34.htm IDEA: XBRL DOCUMENT
v3.19.2

Furniture, Equipment, Purchased Software and Leasehold Improvements (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Tradeweb Markets LLC |
Entity Information [Line Items] |
Components of furniture, equipment, purchased software and leasehold improvements. | The components of furniture, equipment, purchased software and leasehold improvements, net of accumulated depreciation and amortization are as follows (in thousands):
|  | Successor |  |  | Predecessor
|  | December 31, |  |  | December 31,
|  | 2018 |  |  | 2017
Computer hardware |  | $ | 22,818 |  |  | $ | 67,852
Leasehold improvements |  |  | 12,339 |  |  |  | 27,139
Purchased software |  |  | 3,039 |  |  |  | 12,991
Furniture and office equipment |  |  | 2,968 |  |  |  | 6,350
Accumulated depreciation and amortization |  |  | (3,036) |  |  |  | (87,301)
Furniture, equipment, purchased software and leasehold improvements, net of accumulated depreciation and amortization |  | $ | 38,128 |  |  | $ | 27,031

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | dei_EntityInformationLineItems
Namespace Prefix: | dei_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
Name: | us-gaap_PropertyPlantAndEquipmentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=tw_TradewebMarketsLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |