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

Quarterly report pursuant to Section 13 or 15(d)

Debt, Net - Schedule of Debt (Details)

Debt, Net - Schedule of Debt (Details)	9 Months Ended
Debt, Net - Schedule of Debt (Details)	Sep. 30, 2023 USD ($) extension	Sep. 12, 2023 USD ($)	Dec. 31, 2022 USD ($)
Debt
Carrying Value	$ 2,415,783,000		$ 2,231,794,000
Mortgage and other secured debt
Debt
Carrying Value	99,870,000		117,751,000
Loans payable
Debt
Net deferred financing costs	$ 5,600,000		5,400,000
Line of Credit \| Revolving Credit Facility
Debt
Number of extensions \| extension	2
Extension option period	6 months
Line of credit facility, extension fee percentage	0.0625%
Fixed rate mortgage debt \| Mortgage and other secured debt
Debt
Carrying Value	$ 66,870,000		84,433,000
Weighted average interest rate	4.10%
Fixed rate mortgage debt \| Mortgage and other secured debt \| Minimum
Debt
Interest rate	3.82%
Fixed rate mortgage debt \| Mortgage and other secured debt \| Maximum
Debt
Interest rate	4.62%
Variable rate secured debt \| Mortgage and other secured debt
Debt
Carrying Value	$ 33,000,000		33,318,000
Variable rate secured debt \| Mortgage and other secured debt \| Secured Overnight Financing Rate
Debt
Variable rate, additional spread	0.10%
Weighted average interest rate	6.92%
Variable rate secured debt \| Mortgage and other secured debt \| Secured Overnight Financing Rate \| Interest rate swaps
Debt
Weighted average interest rate	2.45%
Variable rate secured debt \| Mortgage and other secured debt \| Minimum \| Secured Overnight Financing Rate
Debt
Variable rate, spread	1.45%
Variable rate secured debt \| Mortgage and other secured debt \| Maximum \| Secured Overnight Financing Rate
Debt
Variable rate, spread	1.55%
Revolving Credit Facility
Debt
Carrying Value	$ 75,000,000		211,000,000
Revolving Credit Facility \| Secured Overnight Financing Rate
Debt
Variable rate, additional spread	0.10%
Weighted average interest rate	6.48%
Revolving Credit Facility \| Minimum \| Secured Overnight Financing Rate
Debt
Variable rate, spread	0.725%
Revolving Credit Facility \| Maximum \| Secured Overnight Financing Rate
Debt
Variable rate, spread	1.40%
Term Loan Facility
Debt
Carrying Value	$ 124,205,000		123,948,000
Number of extensions \| extension	2
Extension option period	12 months
Line of credit facility, extension fee percentage	0.125%
Term Loan Facility \| Secured Overnight Financing Rate
Debt
Interest rate	6.73%
Variable rate, additional spread	0.10%
Term Loan Facility \| Minimum \| Secured Overnight Financing Rate
Debt
Variable rate, spread	0.85%
Term Loan Facility \| Maximum \| Secured Overnight Financing Rate
Debt
Variable rate, spread	1.70%
2.25%, $400,000 aggregate principal \| Unsecured Senior Notes
Debt
Interest rate	2.25%
Debt instrument, face amount	$ 400,000,000
Carrying Value	397,339,000		396,539,000
Unamortized discount included in carrying value	$ 2,200,000		2,800,000
Effective interest rate on debt	2.48%
5.25%, $345,000 aggregate principal \| Unsecured Senior Notes
Debt
Interest rate	5.25%	5.25%
Debt instrument, face amount	$ 345,000,000	$ 345,000,000
Carrying Value	335,450,000		0
Unamortized discount included in carrying value	$ 8,500,000
Effective interest rate on debt	5.83%
2.00%, $400,000 aggregate principal \| Unsecured Senior Notes
Debt
Interest rate	2.00%
Debt instrument, face amount	$ 400,000,000
Carrying Value	397,350,000		396,988,000
Unamortized discount included in carrying value	$ 1,900,000		2,100,000
Effective interest rate on debt	2.09%
2.75%, $600,000 aggregate principal \| Unsecured Senior Notes
Debt
Interest rate	2.75%
Debt instrument, face amount	$ 600,000,000
Carrying Value	590,937,000		590,123,000
Unamortized discount included in carrying value	$ 7,900,000		8,500,000
Effective interest rate on debt	2.94%
2.90%, $400,000 aggregate principal \| Unsecured Senior Notes
Debt
Interest rate	2.90%
Debt instrument, face amount	$ 400,000,000
Carrying Value	395,160,000		394,848,000
Unamortized discount included in carrying value	$ 4,000,000		4,200,000
Effective interest rate on debt	3.01%
Unsecured note payable
Debt
Interest rate	0.00%
Carrying Value	$ 472,000		597,000
Unamortized discount included in carrying value	$ 39,000		$ 65,000