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Fair Value of Financial Instruments (Tables) - Tradeweb Markets LLC | 12 Months Ended
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Dec. 31, 2018
Entity Information [Line Items] |
Schedule of inputs in the valuation | At December 31, 2017, the inputs in the valuation are as follows:
Standard deviation |  | $ | 1,666,667 |
Revenue multiple |  |  | 7.03x |
Discount rate |  |  | 1.64 | %
Schedule of fair value measurements | The fair value measurements are as follows (in thousands):
|  | Quoted Prices in |  |  |  |  |  |  |  |  |
|  | active Markets |  | Significant |  | Significant |  |  |
|  | for Indentical |  | Observable |  | Unobservable |  |  |
|  | Assets |  | Inputs |  | Inputs |  |  |
Predecessor |  | (Level 1) |  | (Level 2) |  | (Level 3) |  | Total
As of December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 101,154 |  | $ | — |  | $ | — |  | $ | 101,154
|  | $ | 101,154 |  | $ | — |  | $ | — |  | $ | 101,154
Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration payable |  | $ | — |  | $ | — |  | $ | 129,393 |  | $ | 129,393
|  | $ | — |  | $ | — |  | $ | 129,393 |  | $ | 129,393
Successor |  |  |  |  |  |  |  |  |  |  |  |
As of December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 127,927 |  | $ | — |  | $ | — |  | $ | 127,927
|  | $ | 127,927 |  | $ | — |  | $ | — |  | $ | 127,927

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- Definition Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19279-110258 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2C -URI http://asc.fasb.org/extlink&oid=99377789&loc=SL7498348-110258 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19190-110258 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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