Annual report pursuant to Section 13 and 15(d)

Orion Office REIT, Organization (Details)

v3.22.1
Orion Office REIT, Organization (Details)
$ / shares in Units, ft² in Millions, $ in Millions
Nov. 12, 2021
USD ($)
Dec. 31, 2021
ft²
property
state
$ / shares
Nov. 10, 2021
$ / shares
Jul. 15, 2021
$ / shares
Real Estate Properties [Line Items]        
Distributions to realty income | $ $ 595.0      
Common stock, par value (in dollars per share) | $ / shares   $ 0.001 $ 0.001 $ 0.01
Number of properties | property   92    
Area of real estate property | ft²   10.5    
Number of states with real estate properties owned | state   29    
Arch Street Joint Venture        
Real Estate Properties [Line Items]        
Number of properties | property   6    
Area of real estate property | ft²   1.0    
Number of states with real estate properties owned | state   6