Annual report pursuant to Section 13 and 15(d)

Orion Office REIT, Debt, Net - Credit Facility (Details)

v3.22.1
Orion Office REIT, Debt, Net - Credit Facility (Details)
 12 Months Ended
Nov. 12, 2021
USD ($)
extension
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Feb. 10, 2022
USD ($)
Debt Instrument [Line Items]          
Debt instrument, term   1 year 2 months 12 days      
Distributions to realty income $ 595,000,000        
Consolidated debt outstanding   $ 620,000,000      
Number of extension periods | extension 1        
Credit facility revolver          
Debt Instrument [Line Items]          
Consolidated debt outstanding   90,000,000 $ 0    
Mortgages payable          
Debt Instrument [Line Items]          
Consolidated debt outstanding   0 36,476,000    
Mortgages payable | Subsequent Event | CMBS Loan          
Debt Instrument [Line Items]          
Debt instrument, face amount         $ 355,000,000
Credit facility revolver          
Debt Instrument [Line Items]          
Borrowing capacity $ 425,000,000        
Proceeds from lines of credit $ 90,000,000 90,000,000 0 $ 0  
Remaining borrowing capacity   335,000,000      
Commitment fee percentage 0.25%        
Credit facility revolver | Line of Credit          
Debt Instrument [Line Items]          
Debt instrument, term 3 years        
Covenant, total debt to total asset value, maximum 0.60        
Covenant, adjusted EBITDA to fixed charges, minimum 1.50        
Covenant, secured debt to total asset value, maximum 0.45        
Covenant, unsecured debt to unencumbered asset value, maximum 0.60        
Covenant, unencumbered real properties to unsecured interest expense, minimum 2.00        
Credit facility revolver | Line of Credit | LIBOR          
Debt Instrument [Line Items]          
Variable rate 2.50%        
Credit facility revolver | Line of Credit | Base Rate          
Debt Instrument [Line Items]          
Variable rate 1.50%        
Letter of Credit          
Debt Instrument [Line Items]          
Borrowing capacity $ 25,000,000        
Credit facility term loan, net          
Debt Instrument [Line Items]          
Borrowing capacity $ 175,000,000        
Proceeds from lines of credit   175,000,000 0 0  
Credit facility term loan, net | Line of Credit          
Debt Instrument [Line Items]          
Debt instrument, term 2 years        
Credit facility term loan, net | Line of Credit | LIBOR          
Debt Instrument [Line Items]          
Variable rate 2.50%        
Credit facility term loan, net | Line of Credit | Base Rate          
Debt Instrument [Line Items]          
Variable rate 1.50%        
Bridge facility, net          
Debt Instrument [Line Items]          
Borrowing capacity $ 355,000,000        
Proceeds from lines of credit   $ 355,000,000 $ 0 $ 0  
Extension period 6 months        
Bridge facility, net | Line of Credit          
Debt Instrument [Line Items]          
Debt instrument, term 6 months        
Bridge facility, net | Line of Credit | LIBOR          
Debt Instrument [Line Items]          
Variable rate 2.50%        
Bridge facility, net | Line of Credit | LIBOR | Maximum          
Debt Instrument [Line Items]          
Variable rate 3.50%        
Bridge facility, net | Line of Credit | Base Rate          
Debt Instrument [Line Items]          
Variable rate 1.50%        
Bridge facility, net | Line of Credit | Base Rate | Maximum          
Debt Instrument [Line Items]          
Variable rate 2.50%