Annual report pursuant to Section 13 and 15(d)

Organization (Details)

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Organization (Details) - Dec. 31, 2019
ft² in Millions
ft²
property
MW
a
Operating properties        
Investments in real estate        
Number of real estate properties   170    
Area of real estate property (in sqft or acres) | ft² 19.2      
Operating properties | Office Properties        
Investments in real estate        
Number of real estate properties   148    
Area of real estate property (in sqft or acres) | ft² 15.4      
Operating properties | Single-tenant data centers        
Investments in real estate        
Number of real estate properties   22    
Area of real estate property (in sqft or acres) | ft² 3.7      
Operating Wholesale Data Center        
Investments in real estate        
Critical load (in megawatts) | MW     19.25  
Properties under development or redevelopment        
Investments in real estate        
Number of real estate properties   14    
Area of real estate property (in sqft or acres) | ft² 2.5      
Properties under development or redevelopment | Office Properties        
Investments in real estate        
Number of real estate properties   10    
Properties under development or redevelopment | Single-tenant data centers        
Investments in real estate        
Number of real estate properties   4    
Properties under development or redevelopment | Partially operational properties        
Investments in real estate        
Number of real estate properties   1    
Land controlled for future development        
Investments in real estate        
Area of real estate property (in sqft or acres) 11.3     900
Other land        
Investments in real estate        
Area of real estate property (in sqft or acres) | a       43
Unconsolidated Real Estate Joint Ventures        
Investments in real estate        
Number of real estate properties   15    
Unconsolidated Real Estate Joint Ventures | Operating properties | Single-tenant data centers        
Investments in real estate        
Number of real estate properties   15