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Business Combinations and Disposals - Disposals (Details) $ in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 29, 2020 USD ($) | Sep. 30, 2020 item | Dec. 31, 2021 item | Dec. 31, 2020
Business Acquisition [Line Items] |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  | Gain (Loss) on Disposition of Business
Number of acquisitions | item |  | 2 | 5 |
Serviz.com, Inc. ("Serviz") Acquisition | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Consideration received | $ 5.0 |  |  |
Fair value of notes cancelled | 2.7 |  |  |
Net Assets | 1.3 |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal | $ 1.4 |  |  |

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