Summary of Significant Accounting Policies - Estimated Useful Lives of Property and Equipment (Details) |
12 Months Ended |
|---|---|
Dec. 31, 2021 | |
| Computer equipment | |
| Property, Plant and Equipment [Line Items] | |
| Property and equipment, useful life | 5 years |
| Computer software and capitalized internal-use software | Minimum | |
| Property, Plant and Equipment [Line Items] | |
| Property and equipment, useful life | 1 year 6 months |
| Computer software and capitalized internal-use software | Maximum | |
| Property, Plant and Equipment [Line Items] | |
| Property and equipment, useful life | 3 years |
| Office furniture and equipment | |
| Property, Plant and Equipment [Line Items] | |
| Property and equipment, useful life | 5 years |
| Buildings | Minimum | |
| Property, Plant and Equipment [Line Items] | |
| Property and equipment, useful life | 25 years |
| Buildings | Maximum | |
| Property, Plant and Equipment [Line Items] | |
| Property and equipment, useful life | 40 years |