Annual report pursuant to Section 13 and 15(d)

Leases (Details 3)

v3.19.3.a.u2
Leases (Details 3)
$ in Millions
 12 Months Ended
Dec. 31, 2019
USD ($)
Lease
Land  
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 68.3
Vehicles and office equipment  
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 1.2
Minimum | Land  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 29 years
Maximum | Land  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 96 years
Washington DC | Land  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 80 years
Lessee, Right-of-use asset $ 10.3
Lessee, Number of lease contracts | Lease 2
Baltimore, Maryland | Land  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 29 years
Lessee, Right-of-use asset $ 6.5
Lessee, Renewal term 49 years
Stevens Investors, LLC | Washington DC | Land  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 96 years
Lessee, Right-of-use asset $ 37.8
M Square Associates, LLC | College Park, Maryland | Land  
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 6.6
Lessee, Number of lease contracts | Lease 4
M Square Associates, LLC | College Park, Maryland | Minimum | Land  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 63 years
M Square Associates, LLC | College Park, Maryland | Maximum | Land  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 74 years
LW Redstone Company, LLC | Huntsville, Alabama | Land  
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 4.8
Lessee, Number of lease contracts | Lease 10
Lessee, Renewal term 25 years
LW Redstone Company, LLC | Huntsville, Alabama | Minimum | Land  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 43 years
LW Redstone Company, LLC | Huntsville, Alabama | Maximum | Land  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 51 years
Fort Meade/BW Corridor | Land  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 48 years
Lessee, Right-of-use asset $ 2.3
Lessee, Number of lease contracts | Lease 2