Segment Disclosures - Additional Information (Detail) |
6 Months Ended |
|---|---|
|
Jun. 30, 2026
Segment
| |
| Segment Reporting [Abstract] | |
| Number of reportable segments | 3 |
| Number of operating segments | 3 |
| Segment Reporting, Factors Used to Identify Entity's Reportable Segments | The Company analyzes the results of its business through the following three reportable segments, which also represent its three operating segments based on the Company's organizational structure |
| Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description | The Company’s CODM, the sole beneficial owner of Domtar, reviews segment operating income, as well as revenue, in the budgeting and forecasting process and considers actual versus budget variances in assessing the performance of the segment and the allocation of resources. |
| X | ||||||||||
- Definition Description of factor used to identify reportable segment, including, but not limited to, basis of organization and whether operating segments are aggregated. Basis of organization includes, but is not limited to, differences in product and service, geographical area, and regulatory environment. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| 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
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- 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
|