COPT Defense Properties Quarterly report pursuant to Section 13 or 15(d)

Organization (Details)

Organization (Details) - Sep. 30, 2019 ft² in Millions	ft²	property	MW	a
Unconsolidated Real Estate Joint Ventures
Investments in real estate
Number of real estate properties		13
Operating Properties
Investments in real estate
Number of real estate properties		169
Area of real estate property (in sq ft or acres) \| ft²	19.0
Operating Properties \| Office Properties
Investments in real estate
Number of real estate properties		147
Area of real estate property (in sq ft or acres) \| ft²	15.3
Operating Properties \| Single-tenant data centers
Investments in real estate
Number of real estate properties		22
Area of real estate property (in sq ft or acres) \| ft²	3.7
Operating Properties \| Single-tenant data centers \| Unconsolidated Real Estate Joint Ventures
Investments in real estate
Number of real estate properties		13
Operating wholesale data center
Investments in real estate
Critical load (in megawatts) \| MW			19.25
Properties under, or contractually committed for, construction or approved for redevelopment
Investments in real estate
Number of real estate properties		15
Area of real estate property (in sq ft or acres) \| ft²	2.6
Properties under, or contractually committed for, construction or approved for redevelopment \| Office Properties
Investments in real estate
Number of real estate properties		10
Properties under, or contractually committed for, construction or approved for redevelopment \| Single-tenant data centers
Investments in real estate
Number of real estate properties		5
Properties under, or contractually committed for, construction or approved for redevelopment \| Partially operational properties
Investments in real estate
Number of real estate properties		2
Land controlled for future development
Investments in real estate
Area of real estate property (in sq ft or acres)	11.2			900
Other Land
Investments in real estate
Area of real estate property (in sq ft or acres) \| a				150