Annual report pursuant to Section 13 and 15(d)

Orion Office REIT, Summary of Significant Accounting Policies (Details)

v3.24.0.1
Orion Office REIT, Summary of Significant Accounting Policies (Details)
12 Months Ended
Dec. 31, 2023
USD ($)
segment
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Entity Information [Line Items]        
Reduction to rental revenue $ 100,000 $ 1,500,000 $ 0  
Lease termination income 4,300,000 1,400,000 300,000  
Property management fee revenue 800,000 800,000 300,000  
Impairment of unconsolidated joint venture 0 0 0  
Impairments of ROU assets 0 0 0  
Restricted cash 34,725,000 34,673,000 0 $ 3,915,000
Franchise and state and local tax expense 500,000 200,000 200,000  
Provisions related to material uncertain income tax positions $ 0 $ 0 $ 0  
Number of segments | segment 1      
Building        
Entity Information [Line Items]        
Real estate assets, useful life 35 years      
Building, Fixtures And Improvements | Minimum        
Entity Information [Line Items]        
Real estate assets, useful life 5 years      
Building, Fixtures And Improvements | Maximum        
Entity Information [Line Items]        
Real estate assets, useful life 20 years