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Intangible Assets and Goodwill - Summary of Goodwill (Details) - Tradeweb Markets LLC - USD ($) $ in Thousands	Dec. 31, 2018	Oct. 01, 2018	Dec. 31, 2017
Refinitiv
Goodwill
Goodwill		$ 2,694,797
Successor
Goodwill
Goodwill	$ 2,694,797
Successor | Refinitiv
Goodwill
Goodwill	$ 2,694,797
Predecessor
Goodwill
Goodwill			$ 563,421
Predecessor | TR
Goodwill
Goodwill			334,185
Predecessor | Merger
Goodwill
Goodwill			66,484
Predecessor | RaffCap
Goodwill
Goodwill			49,200
Predecessor | BondDesk
Goodwill
Goodwill			103,158
Predecessor | Other
Goodwill
Goodwill			$ 10,394

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

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+ References

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