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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Schedule of the estimated useful lives of fixed assets

We depreciate our fixed assets using the straight-line method over their estimated useful lives as follows:

						Estimated Useful Lives
Buildings and building improvements						10-40 years
Land improvements						10-20 years
Tenant improvements on operating properties						Shorter of remaining useful lives of assets or related lease term
Equipment and personal property						3-10 years

Schedule of amortization of intangible assets and deferred revenue

We amortize intangible assets and deferred revenue on property acquisitions as follows:

Asset Type						Amortization Period
Above- and below-market leases						Related lease terms
In-place lease value						Related lease terms
Tenant relationship value						Estimated period of time that tenant will lease space in property
Above- and below-market cost arrangements						Term of arrangements

Schedule of characterization of dividends declared on common and preferred shares

The characterization of dividends paid on COPT’s common shares during each of the last three years was as follows:

						For the Years Ended December 31,
						2021						2020						2019
Ordinary income						33.3		%				45.1		%				54.4		%
Long-term capital gain						57.3		%				54.9		%				45.6		%
Return of capital						9.4		%				—		%				—		%

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Tabular disclosure of amortization periods of intangible assets and deferred revenue, by major class.

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Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
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