Segment Information - Additional Information (Details) $ in Thousands |
3 Months Ended | ||
|---|---|---|---|
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Mar. 31, 2026
USD ($)
Segment
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Mar. 31, 2025
USD ($)
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Dec. 31, 2025
USD ($)
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| Segment Reporting Information [Line Items] | |||
| Number of reportable segments | Segment | 2 | ||
| Revenues | $ 1,491,176 | $ 1,554,360 | |
| Property and equipment, net | $ 154,586 | $ 151,061 | |
| Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] | srt:ChiefExecutiveOfficerMember | ||
| Segment Reporting, Expense Information Used by CODM, Description | The CODM evaluates segment operating performance using segment Revenue, segment direct cost of contracts, segment Selling, General and Administrative expense and segment Adjusted EBITDA attributable to Parsons Corporation. | ||
| Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description | Adjusted EBITDA is the measure of our operating performance used by the CODM to assess our segments’ financial performance. The CODM uses Adjusted EBITDA for business planning purposes, including to manage our segments against internal projected results of operations and measure the performance of our segments generally. | ||
| United States | |||
| Segment Reporting Information [Line Items] | |||
| Revenues | $ 1,100,000 | $ 1,200,000 | |
| Property and equipment, net | $ 133,600 | $ 130,500 | |
| X | ||||||||||
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Indicates title and position of individual or name of group identified as chief operating decision maker (CODM) for segment reporting. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Description of how chief operating decision maker (CODM) uses reported segment profit (loss) measure to assess performance and allocate resource. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Description of nature of expense information used by chief operating decision maker (CODM) to manage operation when segment expense information by category is not disclosed. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- 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. No definition available.
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- Details
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