Annual report pursuant to Section 13 and 15(d)

Leases (Lessee Arrangements) (Details)

v3.22.0.1
Leases (Lessee Arrangements) (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2021
USD ($)
Lease
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 40.6
Minimum | Land Leases  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 27 years
Maximum | Land Leases  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 79 years
Washington DC  
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 9.9
Lessee, Remaining term of contract 78 years
Lessee, Number of lease contracts | Lease 2
Baltimore, Maryland  
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 6.4
Lessee, Remaining term of contract 27 years
Optional renewal term 49 years
Phoenix, Arizona  
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 5.1
Lessee, Remaining term of contract 3 years
Optional renewal term 5 years
LW Redstone Company, LLC | Huntsville, Alabama  
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 10.9
Lessee, Number of lease contracts | Lease 16
Optional renewal term 25 years
LW Redstone Company, LLC | Huntsville, Alabama | Minimum  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 41 years
LW Redstone Company, LLC | Huntsville, Alabama | Maximum  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 50 years
M Square Associates, LLC | College Park, Maryland  
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 6.1
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 61 years
M Square Associates, LLC | College Park, Maryland | Maximum  
Lessee, Lease, Description [Line Items]  
Lessee, Remaining term of contract 72 years
Fort Meade/BW Corridor  
Lessee, Lease, Description [Line Items]  
Lessee, Right-of-use asset $ 2.2
Lessee, Remaining term of contract 46 years
Lessee, Number of lease contracts | Lease 2