Annual report pursuant to Section 13 and 15(d)

Leases (Lessee Arrangements) (Details)

v3.20.4
Leases (Lessee Arrangements) (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2020
USD ($)
Lease
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 81.0
Minimum | Land Leases  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 28 years
Maximum | Land Leases  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 95 years
Washington DC  
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 10.1
Lessee, Remaining term of contract 79 years
Lessee, Number of lease contracts | Lease 2
Baltimore, Maryland  
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 6.5
Lessee, Remaining term of contract 28 years
Optional renewal term 49 years
Phoenix, Arizona  
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 6.5
Lessee, Remaining term of contract 4 years
Optional renewal term 5 years
Stevens Investors, LLC | Washington DC  
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 37.8
Lessee, Remaining term of contract 95 years
LW Redstone Company, LLC | Huntsville, Alabama  
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 11.3
Lessee, Number of lease contracts | Lease 15
Optional renewal term 25 years
LW Redstone Company, LLC | Huntsville, Alabama | Minimum  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 42 years
LW Redstone Company, LLC | Huntsville, Alabama | Maximum  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 51 years
M Square Associates, LLC | College Park, Maryland  
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  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 62 years
M Square Associates, LLC | College Park, Maryland | Maximum  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 73 years
Fort Meade/BW Corridor  
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 2.2
Lessee, Remaining term of contract 47 years
Lessee, Number of lease contracts | Lease 2