| Orion Office REIT, Receivables and Other Assets - Accounts Receivable, Net (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | 
|---|---|---|
| Receivables [Abstract] | ||
| Accounts receivable, net | $ 10,461 | $ 10,194 | 
| Straight-line rent receivable, net | 11,180 | 7,722 | 
| Total | $ 21,641 | $ 17,916 | 
| X | ||||||||||
| 
- Definition Rent And Other Accounts Receivable, After Allowance For Credit Losses No definition available. 
 | 
| X | ||||||||||
| 
- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
 | 
| X | ||||||||||
| 
- Definition Amount of excess of rental income recognized over rental payment required by lease. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
 | 
| X | ||||||||||
| 
- References No definition available. 
 |