| Orion Office REIT, Leases - Lessor Narrative (Details) | Dec. 31, 2022 | 
|---|---|
| Minimum | |
| Lessor, Lease, Description [Line Items] | |
| Lessor, operating leases, term | 2 months 12 days | 
| Maximum | |
| Lessor, Lease, Description [Line Items] | |
| Lessor, operating leases, term | 15 years 3 months 18 days | 
| X | ||||||||||
| 
- 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. 
 | 
| X | ||||||||||
| 
- Definition Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
 | 
| X | ||||||||||
| 
- Details 
 | 
| X | ||||||||||
| 
- Details 
 |