$CDP
COPT Defense Properties Stock $cdp

$cdp Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000086054624000013 Filed on February 22, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$193.3M	$179.7M	$685.0M
YoY Change	15.38%	2.56%	-7.31%
Cost Of Revenue	$92.75M	$81.74M	$304.8M
YoY Change	26.97%	1.13%	-18.32%
Gross Profit	$100.5M	$97.99M	$380.2M
YoY Change	6.42%	3.78%	3.91%
Gross Profit Margin	52.01%	54.52%	55.5%
Selling, General & Admin	$11.75M	$10.55M	$40.04M
YoY Change	17.53%	-4.53%	11.84%
% of Gross Profit	11.69%	10.76%	10.53%
Research & Development	$1.182M	$797.0K	$2.732M
YoY Change	138.79%	-31.11%	-14.44%
% of Gross Profit	1.18%	0.81%	0.72%
Depreciation & Amortization	$38.96M	$36.74M	$149.0M
YoY Change	3.62%	-0.58%	3.73%
% of Gross Profit	38.76%	37.49%	39.18%
Operating Expenses	$11.75M	$48.08M	$191.7M
YoY Change	17.53%	-2.19%	435.56%
Operating Profit	$88.77M	$49.90M	$188.5M
YoY Change	5.1%	10.27%	-42.9%
Interest Expense	$20.77M	-$14.96M	-$58.82M
YoY Change	26.3%	12.94%	-196.15%
% of Operating Profit	23.4%	-29.98%	-31.21%
Other Income/Expense, Net	$4.122M		$12.59M
YoY Change	-6252.24%		-4744.65%
Pretax Income	$33.77M	$34.94M	-$73.76M
YoY Change	-58.09%	-33.2%	-149.85%
Income Tax	$168.0K	$121.0K	$588.0K
% Of Pretax Income	0.5%	0.35%
Net Earnings	$33.67M	$33.55M	-$74.67M
YoY Change	-58.12%	-33.28%	-141.76%
Net Earnings / Revenue	17.42%	18.67%	-10.9%
Basic Earnings Per Share	$0.29		-$0.67
Diluted Earnings Per Share	$0.29	$0.30	-$0.67
COMMON SHARES
Basic Shares Outstanding	112.5M shares	112.5M shares	112.2M shares
Diluted Shares Outstanding	112.7M shares		112.2M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$123.1M	$167.8M	$167.8M
YoY Change	710.21%	1260.3%	1260.3%
Cash & Equivalents	$123.1M	$167.8M	$167.8M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory		$0.00	$0.00
Prepaid Expenses
Receivables	$50.09M	$48.95M	$48.95M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$173.2M	$216.8M	$216.8M
YoY Change	182.38%	-0.09%	-0.09%
LONG-TERM ASSETS
Property, Plant & Equipment	$3.558B	$3.545B	$3.545B
YoY Change	-2.77%	42682.69%	-1.64%
Goodwill
YoY Change
Intangibles		$6.852M
YoY Change		-31.2%
Long-Term Investments	$40.60M	$41.05M	$41.05M
YoY Change	-3.98%	17.52%	17.52%
Other Assets	$163.4M	$152.1M	$152.1M
YoY Change	9.25%	50.31%	50.31%
Total Long-Term Assets	$4.060B	$4.030B	$4.030B
YoY Change	-1.38%	-0.25%	-0.25%
TOTAL ASSETS
Total Short-Term Assets	$173.2M	$216.8M	$216.8M
Total Long-Term Assets	$4.060B	$4.030B	$4.030B
Total Assets	$4.233B	$4.247B	$4.247B
YoY Change	1.31%	-0.24%	-0.24%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$112.0M	$133.3M	$133.3M
YoY Change	-12.86%	-15.62%	-15.62%
Accrued Expenses	$33.14M	$33.93M	$33.93M
YoY Change	-5.03%	17.98%	17.98%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$216.6M	$235.3M	$235.3M
YoY Change	-6.11%	-5.19%	-5.19%
LONG-TERM LIABILITIES
Long-Term Debt	$2.417B	$2.416B	$2.416B
YoY Change	13.82%	8.27%	8.27%
Other Long-Term Liabilities	$50.43M	$48.05M	$48.05M
YoY Change	70.36%	62.53%	62.53%
Total Long-Term Liabilities	$2.467B	$2.464B	$2.464B
YoY Change	14.6%	8.98%	8.98%
TOTAL LIABILITIES
Total Short-Term Liabilities	$216.6M	$235.3M	$235.3M
Total Long-Term Liabilities	$2.467B	$2.464B	$2.464B
Total Liabilities	$2.684B	$2.763B	$2.763B
YoY Change	12.59%	10.1%	7.28%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock	$1.126M	$1.126M
YoY Change	0.09%	0.18%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.482B	$1.484B	$1.484B
YoY Change
Total Liabilities & Shareholders Equity	$4.233B	$4.247B	$4.247B
YoY Change	1.31%	-0.24%	-0.24%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$33.67M	$33.55M	-$74.67M
YoY Change	-58.12%	-33.28%	-141.76%
Depreciation, Depletion And Amortization	$38.96M	$36.74M	$149.0M
YoY Change	3.62%	-0.58%	3.73%
Cash From Operating Activities	$70.99M	$109.5M	$276.3M
YoY Change	20.84%	39.11%	3.93%
INVESTING ACTIVITIES
Capital Expenditures		$71.02M	$352.4M
YoY Change		-19.82%	-2.94%
Acquisitions
YoY Change
Other Investing Activities	$73.00K	$3.241M	$1.355M
YoY Change	-41.6%	-96.3%	1296.91%
Cash From Investing Activities	-$78.91M	-$67.78M	-$169.6M
YoY Change	-192.64%	6531.7%	103.25%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$36.42M	-34.77M	$46.26M
YoY Change	-74.63%	-55.17%	-125.26%
NET CHANGE
Cash From Operating Activities	$70.99M	109.5M	$276.3M
Cash From Investing Activities	-$78.91M	-67.78M	-$169.6M
Cash From Financing Activities	-$36.42M	-34.77M	$46.26M
Net Change In Cash	-$44.34M	6.921M	$152.9M
YoY Change	-11325.32%	6135.14%	-19048.57%
FREE CASH FLOW
Cash From Operating Activities	$70.99M	$109.5M	$276.3M
Capital Expenditures		$71.02M	$352.4M
Free Cash Flow		$38.45M	-$76.17M
YoY Change		-488.93%	-21.72%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-73498000	usd
CY2023	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-261000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	447000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	145000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-74347000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	78220000	usd
CY2022	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	29573000	usd
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	3358000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	17316000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	22033000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	169424000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	16509000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	-74347000	usd
CY2023	dei	Trading Symbol TradingSymbol	CDP
CY2023	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2022	us-gaap	Interest Expense InterestExpense	61174000	usd
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	12587000	usd
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	9070000	usd
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	9007000	usd
CY2022	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	19250000	usd
CY2021	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	65590000	usd
CY2022	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-609000	usd
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-100626000	usd
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0000860546
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023Q3	ofc	Number Of Impaired Parcels Of Land NumberOfImpairedParcelsOfLand	1	property
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#PrepaidExpenseAndOtherAssets
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#PrepaidExpenseAndOtherAssets
CY2023Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilities
CY2022Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilities
CY2023Q4	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss Statement Of Financial Position Extensible List FinancingReceivableAccruedInterestAfterAllowanceForCreditLossStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#NotesReceivableNet
CY2023Q3	ofc	Number Of Impaired Parcels Of Land NumberOfImpairedParcelsOfLand	1	property
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	1-14023
CY2023	dei	Entity Registrant Name EntityRegistrantName	COPT DEFENSE PROPERTIES
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	23-2947217
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	6711 Columbia Gateway Drive
CY2023	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 300
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Columbia
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	MD
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	21046
CY2023	dei	City Area Code CityAreaCode	443
CY2023	dei	Local Phone Number LocalPhoneNumber	285-5400
CY2023	dei	Security12b Title Security12bTitle	Common Shares of beneficial interest, $0.01 par value
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	2300000000	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	112548467	shares
CY2023Q4	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2023Q4	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2023Q4	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2023Q4	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2023	dei	Auditor Firm AuditorFirmId	238
CY2023	dei	Auditor Name AuditorName	PricewaterhouseCoopers LLP
CY2023	dei	Auditor Location AuditorLocation	Baltimore, Maryland
CY2023Q4	us-gaap	Rental Properties RentalProperties	3246806000	usd
CY2022Q4	us-gaap	Rental Properties RentalProperties	3258899000	usd
CY2023Q4	us-gaap	Development In Process DevelopmentInProcess	256872000	usd
CY2022Q4	us-gaap	Development In Process DevelopmentInProcess	297499000	usd
CY2023Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	3503678000	usd
CY2022Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	3556398000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	41296000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	37020000	usd
CY2023Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	0	usd
CY2022Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	161286000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	167820000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12337000	usd
CY2023Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	41052000	usd
CY2022Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	21460000	usd
CY2023Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	48946000	usd
CY2022Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	43334000	usd
CY2023Q4	us-gaap	Deferred Rent Receivables Net DeferredRentReceivablesNet	149237000	usd
CY2022Q4	us-gaap	Deferred Rent Receivables Net DeferredRentReceivablesNet	125147000	usd
CY2023Q4	us-gaap	Incentive To Lessee IncentiveToLessee	61331000	usd
CY2022Q4	us-gaap	Incentive To Lessee IncentiveToLessee	49757000	usd
CY2023Q4	us-gaap	Deferred Costs Leasing Accumulated Amortization DeferredCostsLeasingAccumulatedAmortization	41448000	usd
CY2022Q4	us-gaap	Deferred Costs Leasing Accumulated Amortization DeferredCostsLeasingAccumulatedAmortization	35270000	usd
CY2023Q4	us-gaap	Deferred Costs Leasing Net DeferredCostsLeasingNet	70057000	usd
CY2022Q4	us-gaap	Deferred Costs Leasing Net DeferredCostsLeasingNet	69339000	usd
CY2023Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	82037000	usd
CY2022Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	96576000	usd
CY2023Q4	us-gaap	Assets Assets	4246966000	usd
CY2022Q4	us-gaap	Assets Assets	4257275000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	2416287000	usd
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	2231794000	usd
CY2023Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	133315000	usd
CY2022Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	157998000	usd
CY2023Q4	ofc	Advance Rent And Security Deposit Liability AdvanceRentAndSecurityDepositLiability	35409000	usd
CY2022Q4	ofc	Advance Rent And Security Deposit Liability AdvanceRentAndSecurityDepositLiability	30016000	usd
CY2023Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	32644000	usd
CY2022Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	31400000	usd
CY2023Q4	us-gaap	Deferred Revenue DeferredRevenue	29049000	usd
CY2022Q4	us-gaap	Deferred Revenue DeferredRevenue	11004000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	33931000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	28759000	usd
CY2023Q4	us-gaap	Other Liabilities OtherLiabilities	18996000	usd
CY2022Q4	us-gaap	Other Liabilities OtherLiabilities	18556000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	2699631000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	2509527000	usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	23580000	usd
CY2022Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	26293000	usd
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000	shares
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	112555352	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	112555352	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	112423893	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	112423893	shares
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	1126000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	1124000	usd
CY2023Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2489989000	usd
CY2022Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2486116000	usd
CY2023Q4	us-gaap	Accumulated Distributions In Excess Of Net Income AccumulatedDistributionsInExcessOfNetIncome	1009318000	usd
CY2022Q4	us-gaap	Accumulated Distributions In Excess Of Net Income AccumulatedDistributionsInExcessOfNetIncome	807508000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	2115000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	2071000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	1483912000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	1681803000	usd
CY2023Q4	us-gaap	Minority Interest In Operating Partnerships MinorityInterestInOperatingPartnerships	25502000	usd
CY2022Q4	us-gaap	Minority Interest In Operating Partnerships MinorityInterestInOperatingPartnerships	25808000	usd
CY2023Q4	us-gaap	Other Minority Interests OtherMinorityInterests	14341000	usd
CY2022Q4	us-gaap	Other Minority Interests OtherMinorityInterests	13844000	usd
CY2023Q4	us-gaap	Minority Interest MinorityInterest	39843000	usd
CY2022Q4	us-gaap	Minority Interest MinorityInterest	39652000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1523755000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1721455000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4246966000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4257275000	usd
CY2023	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	619847000	usd
CY2022	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	580169000	usd
CY2021	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	553668000	usd
CY2023	ofc	Other Property Revenue OtherPropertyRevenue	4956000	usd
CY2022	ofc	Other Property Revenue OtherPropertyRevenue	4229000	usd
CY2021	ofc	Other Property Revenue OtherPropertyRevenue	2902000	usd
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	60179000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	154632000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	107876000	usd
CY2023	us-gaap	Revenues Revenues	684982000	usd
CY2022	us-gaap	Revenues Revenues	739030000	usd
CY2021	us-gaap	Revenues Revenues	664446000	usd
CY2023	ofc	Cost Of Other Property Operating Expense Excluding Discontinued Operations CostOfOtherPropertyOperatingExpenseExcludingDiscontinuedOperations	247385000	usd
CY2022	ofc	Cost Of Other Property Operating Expense Excluding Discontinued Operations CostOfOtherPropertyOperatingExpenseExcludingDiscontinuedOperations	227430000	usd
CY2021	ofc	Cost Of Other Property Operating Expense Excluding Discontinued Operations CostOfOtherPropertyOperatingExpenseExcludingDiscontinuedOperations	213377000	usd
CY2023	us-gaap	Depreciation And Amortization DepreciationAndAmortization	148950000	usd
CY2022	us-gaap	Depreciation And Amortization DepreciationAndAmortization	141230000	usd
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	137543000	usd
CY2023	ofc	Construction Contract And Other Service Expenses ConstructionContractAndOtherServiceExpenses	57416000	usd
CY2022	ofc	Construction Contract And Other Service Expenses ConstructionContractAndOtherServiceExpenses	149963000	usd
CY2021	ofc	Construction Contract And Other Service Expenses ConstructionContractAndOtherServiceExpenses	104053000	usd
CY2023	us-gaap	Asset Impairment Charges AssetImpairmentCharges	252797000	usd
CY2022	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	usd
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	usd
CY2023	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	42769000	usd
CY2022	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	38991000	usd
CY2021	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	40774000	usd
CY2023	us-gaap	Costs And Expenses CostsAndExpenses	749317000	usd
CY2022	us-gaap	Costs And Expenses CostsAndExpenses	557614000	usd
CY2021	us-gaap	Costs And Expenses CostsAndExpenses	495747000	usd
CY2023	us-gaap	Interest Expense InterestExpense	71142000	usd
CY2021	us-gaap	Interest Expense InterestExpense	65398000	usd
CY2023	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	147953000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	77272000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1743000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1093000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	149249000	usd
CY2023	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	usd
CY2023	us-gaap	Profit Loss ProfitLoss	-74347000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	178822000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	81578000	usd
CY2023	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable	-1306000	usd
CY2022	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable	2603000	usd
CY2021	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable	1012000	usd
CY2023	ofc	Minority Interest In Net Income Loss Other Including Joint Ventures Minority Interests MinorityInterestInNetIncomeLossOtherIncludingJointVenturesMinorityInterests	428000	usd
CY2022	ofc	Minority Interest In Net Income Loss Other Including Joint Ventures Minority Interests MinorityInterestInNetIncomeLossOtherIncludingJointVenturesMinorityInterests	3190000	usd
CY2021	ofc	Minority Interest In Net Income Loss Other Including Joint Ventures Minority Interests MinorityInterestInNetIncomeLossOtherIncludingJointVenturesMinorityInterests	4025000	usd
CY2023	ofc	Net Income Loss Available To Common Stockholders Including Participating Securities NetIncomeLossAvailableToCommonStockholdersIncludingParticipatingSecurities	-73469000	usd
CY2022	ofc	Net Income Loss Available To Common Stockholders Including Participating Securities NetIncomeLossAvailableToCommonStockholdersIncludingParticipatingSecurities	173029000	usd
CY2021	ofc	Net Income Loss Available To Common Stockholders Including Participating Securities NetIncomeLossAvailableToCommonStockholdersIncludingParticipatingSecurities	76541000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.67
CY2022	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.28
CY2021	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.65
CY2023	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2022	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.26
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.03
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.67
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.54
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.68
CY2023	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.67
CY2022	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.27
CY2021	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.65
CY2023	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2022	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.26
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.03
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.67
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.53
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.68
CY2023	us-gaap	Profit Loss ProfitLoss	-74347000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	178822000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	81578000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	3827000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	4730000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	1379000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	3900000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-996000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-5048000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-73000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	5726000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6427000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-74420000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	184548000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	88005000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-995000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	6389000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	5366000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-73425000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	178159000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	82639000	usd
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	112181759	shares
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1693712000	usd
CY2021	us-gaap	Stock Issued During Period Shares Conversion Of Units StockIssuedDuringPeriodSharesConversionOfUnits	8054	shares
CY2021	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	0	usd
CY2021	us-gaap	Partners Capital Account Redemptions PartnersCapitalAccountRedemptions	339000	usd
CY2021	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	137720	shares
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8481000	usd
CY2021	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	2492000	usd
CY2021	ofc	Noncontrolling Interest Increase Decrease From Changes In Ownership NoncontrollingInterestIncreaseDecreaseFromChangesInOwnership	0	usd
CY2021	ofc	Comprehensive Income Loss Net Of Tax After Redeemable Noncontrolling Interest Adjustments ComprehensiveIncomeLossNetOfTaxAfterRedeemableNoncontrollingInterestAdjustments	84845000	usd
CY2021	us-gaap	Dividends Dividends	123568000	usd
CY2021	ofc	Minority Interest Decrease From Distributions To Operating Partnership Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToOperatingPartnershipNoncontrollingInterestHolders	1595000	usd
CY2021	ofc	Minority Interest Decrease From Distributions Including Joint Ventures MinorityInterestDecreaseFromDistributionsIncludingJointVentures	30000	usd
CY2021	ofc	Adjustment For Changes In Fair Value Of Redeemable Noncontrolling Interests AdjustmentForChangesInFairValueOfRedeemableNoncontrollingInterests	-1615000	usd
CY2021	us-gaap	Stockholders Equity Other StockholdersEquityOther	324000	usd
CY2021	us-gaap	Stockholders Equity Other StockholdersEquityOther	324000	usd
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	112327533	shares
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1657075000	usd
CY2022	us-gaap	Partners Capital Account Redemptions PartnersCapitalAccountRedemptions	513000	usd
CY2022	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	96360	shares
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9534000	usd
CY2022	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1230000	usd
CY2022	ofc	Noncontrolling Interest Increase Decrease From Changes In Ownership NoncontrollingInterestIncreaseDecreaseFromChangesInOwnership	0	usd
CY2022	ofc	Comprehensive Income Loss Net Of Tax After Redeemable Noncontrolling Interest Adjustments ComprehensiveIncomeLossNetOfTaxAfterRedeemableNoncontrollingInterestAdjustments	181741000	usd
CY2022	us-gaap	Dividends Dividends	123674000	usd
CY2022	ofc	Minority Interest Decrease From Distributions To Operating Partnership Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToOperatingPartnershipNoncontrollingInterestHolders	1883000	usd
CY2022	ofc	Minority Interest Decrease From Distributions Including Joint Ventures MinorityInterestDecreaseFromDistributionsIncludingJointVentures	31000	usd
CY2022	ofc	Adjustment For Changes In Fair Value Of Redeemable Noncontrolling Interests AdjustmentForChangesInFairValueOfRedeemableNoncontrollingInterests	436000	usd
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	112423893	shares
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1721455000	usd
CY2023	us-gaap	Partners Capital Account Redemptions PartnersCapitalAccountRedemptions	731000	usd
CY2023	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	131459	shares
CY2023	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9120000	usd
CY2023	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1251000	usd
CY2023	ofc	Noncontrolling Interest Increase Decrease From Changes In Ownership NoncontrollingInterestIncreaseDecreaseFromChangesInOwnership	0	usd
CY2023	ofc	Comprehensive Income Loss Net Of Tax After Redeemable Noncontrolling Interest Adjustments ComprehensiveIncomeLossNetOfTaxAfterRedeemableNoncontrollingInterestAdjustments	-76874000	usd
CY2023	us-gaap	Dividends Dividends	128341000	usd
CY2023	ofc	Minority Interest Decrease From Distributions To Operating Partnership Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToOperatingPartnershipNoncontrollingInterestHolders	2190000	usd
CY2023	ofc	Minority Interest Decrease From Distributions Including Joint Ventures MinorityInterestDecreaseFromDistributionsIncludingJointVentures	31000	usd
CY2023	ofc	Adjustment For Changes In Fair Value Of Redeemable Noncontrolling Interests AdjustmentForChangesInFairValueOfRedeemableNoncontrollingInterests	-72000	usd
CY2023	ofc	Noncontrolling Interest Increase Decrease For Reclassification Of Redeemable Noncontrolling Interest To Equity NoncontrollingInterestIncreaseDecreaseForReclassificationOfRedeemableNoncontrollingInterestToEquity	2670000	usd
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	112555352	shares
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1523755000	usd
CY2023	ofc	Revenues From Real Estate Operations Received RevenuesFromRealEstateOperationsReceived	638177000	usd
CY2022	ofc	Revenues From Real Estate Operations Received RevenuesFromRealEstateOperationsReceived	581139000	usd
CY2021	ofc	Revenues From Real Estate Operations Received RevenuesFromRealEstateOperationsReceived	571092000	usd
CY2023	ofc	Construction Contract And Other Service Revenues Received ConstructionContractAndOtherServiceRevenuesReceived	66027000	usd
CY2022	ofc	Construction Contract And Other Service Revenues Received ConstructionContractAndOtherServiceRevenuesReceived	155108000	usd
CY2021	ofc	Construction Contract And Other Service Revenues Received ConstructionContractAndOtherServiceRevenuesReceived	100222000	usd
CY2023	ofc	Property Operating Expenses Paid PropertyOperatingExpensesPaid	243209000	usd
CY2022	ofc	Property Operating Expenses Paid PropertyOperatingExpensesPaid	231422000	usd
CY2021	ofc	Property Operating Expenses Paid PropertyOperatingExpensesPaid	223254000	usd
CY2023	ofc	Construction Contract And Other Service Expenses Paid ConstructionContractAndOtherServiceExpensesPaid	65335000	usd
CY2022	ofc	Construction Contract And Other Service Expenses Paid ConstructionContractAndOtherServiceExpensesPaid	160497000	usd
CY2021	ofc	Construction Contract And Other Service Expenses Paid ConstructionContractAndOtherServiceExpensesPaid	86602000	usd
CY2023	ofc	General And Administrative Leasing And Other Expenses Paid GeneralAndAdministrativeLeasingAndOtherExpensesPaid	33283000	usd
CY2022	ofc	General And Administrative Leasing And Other Expenses Paid GeneralAndAdministrativeLeasingAndOtherExpensesPaid	32852000	usd
CY2021	ofc	General And Administrative Leasing And Other Expenses Paid GeneralAndAdministrativeLeasingAndOtherExpensesPaid	29072000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	59807000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	56061000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	65184000	usd
CY2023	ofc	Paymentsof Lease Incentives PaymentsofLeaseIncentives	25566000	usd
CY2022	ofc	Paymentsof Lease Incentives PaymentsofLeaseIncentives	10374000	usd
CY2021	ofc	Paymentsof Lease Incentives PaymentsofLeaseIncentives	18127000	usd
CY2023	ofc	Interest And Other Income Received InterestAndOtherIncomeReceived	5491000	usd
CY2022	ofc	Interest And Other Income Received InterestAndOtherIncomeReceived	19327000	usd
CY2021	ofc	Interest And Other Income Received InterestAndOtherIncomeReceived	1099000	usd
CY2023	ofc	Payments For Sales Type Lease Costs PaymentsForSalesTypeLeaseCosts	7409000	usd
CY2022	ofc	Payments For Sales Type Lease Costs PaymentsForSalesTypeLeaseCosts	0	usd
CY2021	ofc	Payments For Sales Type Lease Costs PaymentsForSalesTypeLeaseCosts	2065000	usd
CY2023	us-gaap	Income Taxes Paid IncomeTaxesPaid	37000	usd
CY2022	us-gaap	Income Taxes Paid IncomeTaxesPaid	0	usd
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	60000	usd
CY2023	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	1225000	usd
CY2022	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	1457000	usd
CY2021	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	1099000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	276274000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	265825000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	249148000	usd
CY2023	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	264834000	usd
CY2022	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	283147000	usd
CY2021	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	267905000	usd
CY2023	us-gaap	Payments For Tenant Improvements PaymentsForTenantImprovements	67113000	usd
CY2022	us-gaap	Payments For Tenant Improvements PaymentsForTenantImprovements	43606000	usd
CY2021	us-gaap	Payments For Tenant Improvements PaymentsForTenantImprovements	21488000	usd
CY2023	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	20500000	usd
CY2022	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	36377000	usd
CY2021	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	30026000	usd
CY2023	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	189506000	usd
CY2022	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	281071000	usd
CY2021	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	143116000	usd
CY2023	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	1088000	usd
CY2022	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	26627000	usd
CY2021	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	1287000	usd
CY2023	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	1087000	usd
CY2022	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	19712000	usd
CY2021	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	5880000	usd
CY2023	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	11000000	usd
CY2022	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	6000000	usd
CY2021	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	0	usd
CY2023	us-gaap	Payments For Leasing Costs PaymentsForLeasingCosts	16328000	usd
CY2022	us-gaap	Payments For Leasing Costs PaymentsForLeasingCosts	13591000	usd
CY2021	us-gaap	Payments For Leasing Costs PaymentsForLeasingCosts	21913000	usd
CY2023	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1355000	usd
CY2022	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	722000	usd
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	160000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-169623000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-83457000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-202969000	usd
CY2023	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	291000000	usd
CY2022	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	852000000	usd
CY2021	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	597000000	usd
CY2023	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	336375000	usd
CY2022	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	usd
CY2021	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	1382614000	usd
CY2023	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	0	usd
CY2022	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	125000000	usd
CY2021	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	0	usd
CY2023	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	0	usd
CY2022	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	0	usd
CY2021	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	4630000	usd
CY2023	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	427000000	usd
CY2022	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	717000000	usd
CY2021	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	664000000	usd
CY2023	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	usd
CY2022	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	usd
CY2021	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	900000000	usd
CY2023	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	usd
CY2022	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	300000000	usd
CY2021	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	100000000	usd
CY2023	ofc	Scheduled Principal Amortization Repayments Of Long Term Debt ScheduledPrincipalAmortizationRepaymentsOfLongTermDebt	3052000	usd
CY2022	ofc	Scheduled Principal Amortization Repayments Of Long Term Debt ScheduledPrincipalAmortizationRepaymentsOfLongTermDebt	3333000	usd
CY2023	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	15902000	usd
CY2023	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	1030000	usd
CY2022	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	6506000	usd
CY2021	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	3620000	usd
CY2023	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	usd
CY2022	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	6000	usd
CY2021	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	95180000	usd
CY2023	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	127178000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	123645000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	123527000	usd
CY2023	ofc	Paymentsof Distributions Redeemable Noncontrolling Interest PaymentsofDistributionsRedeemableNoncontrollingInterest	2686000	usd
CY2022	ofc	Paymentsof Distributions Redeemable Noncontrolling Interest PaymentsofDistributionsRedeemableNoncontrollingInterest	3396000	usd
CY2021	ofc	Paymentsof Distributions Redeemable Noncontrolling Interest PaymentsofDistributionsRedeemableNoncontrollingInterest	2273000	usd
CY2023	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-4263000	usd
CY2022	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-6289000	usd
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-4283000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	46264000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-183175000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-50896000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	152915000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-807000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-4717000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	16509000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	17316000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	178822000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	81578000	usd
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	151395000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	143593000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	150644000	usd
CY2023	us-gaap	Asset Impairment Charges AssetImpairmentCharges	252797000	usd
CY2022	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	usd
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	usd
CY2023	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	5574000	usd
CY2022	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	4737000	usd
CY2021	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	5224000	usd
CY2023	us-gaap	Straight Line Rent StraightLineRent	5495000	usd
CY2022	us-gaap	Straight Line Rent StraightLineRent	19288000	usd
CY2021	us-gaap	Straight Line Rent StraightLineRent	19090000	usd
CY2023	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	49392000	usd
CY2022	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	47814000	usd
CY2021	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	65590000	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	8544000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	8789000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	7979000	usd
CY2023	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2022	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-609000	usd
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-100626000	usd
CY2023	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	4826000	usd
CY2022	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-10073000	usd
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	5047000	usd
CY2023	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	5618000	usd
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	2436000	usd
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	662000	usd
CY2023	ofc	Increase Decrease In Lease Incentives And Prepaid Expenses And Other Assets Net IncreaseDecreaseInLeaseIncentivesAndPrepaidExpensesAndOtherAssetsNet	4851000	usd
CY2022	ofc	Increase Decrease In Lease Incentives And Prepaid Expenses And Other Assets Net IncreaseDecreaseInLeaseIncentivesAndPrepaidExpensesAndOtherAssetsNet	-2130000	usd
CY2021	ofc	Increase Decrease In Lease Incentives And Prepaid Expenses And Other Assets Net IncreaseDecreaseInLeaseIncentivesAndPrepaidExpensesAndOtherAssetsNet	27355000	usd
CY2023	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	-2900000	usd
CY2022	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	-11144000	usd
CY2021	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	22004000	usd
CY2023	ofc	Increase Decrease In Advance Rent And Security Deposit Liability IncreaseDecreaseInAdvanceRentAndSecurityDepositLiability	5393000	usd
CY2022	ofc	Increase Decrease In Advance Rent And Security Deposit Liability IncreaseDecreaseInAdvanceRentAndSecurityDepositLiability	-2246000	usd
CY2021	ofc	Increase Decrease In Advance Rent And Security Deposit Liability IncreaseDecreaseInAdvanceRentAndSecurityDepositLiability	-1163000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	276274000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	265825000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	249148000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12337000	usd
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	13262000	usd
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	18369000	usd
CY2022Q4	us-gaap	Restricted Cash RestrictedCash	4172000	usd
CY2021Q4	us-gaap	Restricted Cash RestrictedCash	4054000	usd
CY2020Q4	us-gaap	Restricted Cash RestrictedCash	3664000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	16509000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	17316000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	22033000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	167820000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12337000	usd
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	13262000	usd
CY2023Q4	us-gaap	Restricted Cash RestrictedCash	1604000	usd
CY2022Q4	us-gaap	Restricted Cash RestrictedCash	4172000	usd
CY2021Q4	us-gaap	Restricted Cash RestrictedCash	4054000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	169424000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	16509000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	17316000	usd
CY2023	ofc	Increase Decrease In Accrued Capital Improvements Leasing And Other Investing Activity Costs IncreaseDecreaseInAccruedCapitalImprovementsLeasingAndOtherInvestingActivityCosts	-22700000	usd
CY2022	ofc	Increase Decrease In Accrued Capital Improvements Leasing And Other Investing Activity Costs IncreaseDecreaseInAccruedCapitalImprovementsLeasingAndOtherInvestingActivityCosts	-11453000	usd
CY2021	ofc	Increase Decrease In Accrued Capital Improvements Leasing And Other Investing Activity Costs IncreaseDecreaseInAccruedCapitalImprovementsLeasingAndOtherInvestingActivityCosts	20667000	usd
CY2023	ofc	Decrease To Finance Right Of Use Assets And Increase In Land In Connection With Exercise Of Bargain Purchase Option DecreaseToFinanceRightOfUseAssetsAndIncreaseInLandInConnectionWithExerciseOfBargainPurchaseOption	0	usd
CY2022	ofc	Decrease To Finance Right Of Use Assets And Increase In Land In Connection With Exercise Of Bargain Purchase Option DecreaseToFinanceRightOfUseAssetsAndIncreaseInLandInConnectionWithExerciseOfBargainPurchaseOption	0	usd
CY2021	ofc	Decrease To Finance Right Of Use Assets And Increase In Land In Connection With Exercise Of Bargain Purchase Option DecreaseToFinanceRightOfUseAssetsAndIncreaseInLandInConnectionWithExerciseOfBargainPurchaseOption	37831000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	8718000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	683000	usd
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	328000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	434000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	0	usd
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	0	usd
CY2023	ofc	Increasein Investmentin Unconsolidated Real Estate Joint Venturein Connection With Partial Saleof Properties IncreaseinInvestmentinUnconsolidatedRealEstateJointVentureinConnectionWithPartialSaleofProperties	21121000	usd
CY2022	ofc	Increasein Investmentin Unconsolidated Real Estate Joint Venturein Connection With Partial Saleof Properties IncreaseinInvestmentinUnconsolidatedRealEstateJointVentureinConnectionWithPartialSaleofProperties	6738000	usd
CY2021	ofc	Increasein Investmentin Unconsolidated Real Estate Joint Venturein Connection With Partial Saleof Properties IncreaseinInvestmentinUnconsolidatedRealEstateJointVentureinConnectionWithPartialSaleofProperties	11842000	usd
CY2023	ofc	Increase Decrease In Fair Value Of Derivatives Applied To Aocl And Noncontrolling Interests IncreaseDecreaseInFairValueOfDerivativesAppliedToAoclAndNoncontrollingInterests	-73000	usd
CY2022	ofc	Increase Decrease In Fair Value Of Derivatives Applied To Aocl And Noncontrolling Interests IncreaseDecreaseInFairValueOfDerivativesAppliedToAoclAndNoncontrollingInterests	5236000	usd
CY2021	ofc	Increase Decrease In Fair Value Of Derivatives Applied To Aocl And Noncontrolling Interests IncreaseDecreaseInFairValueOfDerivativesAppliedToAoclAndNoncontrollingInterests	6233000	usd
CY2023Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	32644000	usd
CY2022Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	31400000	usd
CY2021Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	31299000	usd
CY2023	ofc	Equity Change Stock Issued During Period Value Conversion Of Units EquityChangeStockIssuedDuringPeriodValueConversionOfUnits	0	usd
CY2022	ofc	Equity Change Stock Issued During Period Value Conversion Of Units EquityChangeStockIssuedDuringPeriodValueConversionOfUnits	0	usd
CY2021	ofc	Equity Change Stock Issued During Period Value Conversion Of Units EquityChangeStockIssuedDuringPeriodValueConversionOfUnits	121000	usd
CY2023	ofc	Equity Change Adjustments To Additional Paid In Capital Reallocation Of Minority Interest EquityChangeAdjustmentsToAdditionalPaidInCapitalReallocationOfMinorityInterest	-1039000	usd
CY2022	ofc	Equity Change Adjustments To Additional Paid In Capital Reallocation Of Minority Interest EquityChangeAdjustmentsToAdditionalPaidInCapitalReallocationOfMinorityInterest	-1273000	usd
CY2021	ofc	Equity Change Adjustments To Additional Paid In Capital Reallocation Of Minority Interest EquityChangeAdjustmentsToAdditionalPaidInCapitalReallocationOfMinorityInterest	-2318000	usd
CY2023	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	72000	usd
CY2022	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-436000	usd
CY2021	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	1615000	usd
CY2023	ofc	Reclassification Of Redeemable Noncontrolling Interests To Equity ReclassificationOfRedeemableNoncontrollingInterestsToEquity	2670000	usd
CY2022	ofc	Reclassification Of Redeemable Noncontrolling Interests To Equity ReclassificationOfRedeemableNoncontrollingInterestsToEquity	0	usd
CY2021	ofc	Reclassification Of Redeemable Noncontrolling Interests To Equity ReclassificationOfRedeemableNoncontrollingInterestsToEquity	0	usd
CY2023	us-gaap	Nature Of Operations NatureOfOperations	Organization<div><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%"> </span></div><div style="text-indent:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">COPT Defense Properties (“COPT Defense”) and subsidiaries (collectively, the “Company”, “we” or “us”) is a fully-integrated and self-managed real estate investment trust (“REIT”) focused on owning, operating and developing properties in locations proximate to, or sometimes containing, key U.S. Government (“USG”) defense installations and missions (which we refer to herein as our Defense/IT Portfolio). Our tenants include the USG and their defense contractors, who are primarily engaged in priority national security activities, and who generally require mission-critical and high security property enhancements. In September 2023, we changed our name from Corporate Office Properties Trust to COPT Defense Properties to better describe our investment strategy’s focus on locations serving our country’s priority defense activities. As of December 31, 2023, our Defense/IT Portfolio included (all references to number of properties, square footage and acres are unaudited):</span></div><div style="padding-left:18pt"><span><br/></span></div><div style="padding-left:18pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">></span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:12.75pt">190 operating properties totaling 21.7 million square feet comprised of 16.0 million square feet in 160 office properties and 5.7 million square feet in 30 single-tenant data center shells. We owned 24 of these data center shells through unconsolidated real estate joint ventures;</span></div><div style="padding-left:18pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">></span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:12.75pt">five properties under development (two office properties and three data center shells) that will total approximately 817,000 square feet upon completion; and</span></div><div style="padding-left:18pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">></span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:12.75pt">approximately 660 acres of land controlled that we believe could be developed into approximately 7.9 million square feet.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">We also owned eight other operating properties totaling 2.1 million square feet and approximately 50 acres of other developable land in the Greater Washington, DC/Baltimore region as of December 31, 2023.</span></div><div><span><br/></span></div><div style="text-indent:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">We conduct almost all of our operations and own almost all of our assets through our operating partnership, COPT Defense Properties, L.P. (“CDPLP”) and subsidiaries (collectively, the “Operating Partnership”), of which COPT Defense is the sole general partner. CDPLP owns real estate directly and through subsidiary partnerships and limited liability companies (“LLCs”). In addition to owning real estate, CDPLP also owns subsidiaries that provide real estate services such as property management, development and construction services primarily for our properties but also for third parties. Some of these services are performed by a taxable REIT subsidiary (“TRS”). In September 2023, we changed CDPLP’s name from Corporate Office Properties, L.P. to COPT Defense Properties, L.P.</span></div><div style="text-indent:18pt"><span><br/></span></div><div style="text-indent:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">Equity interests in CDPLP are in the form of common and preferred units. As of December 31, 2023, COPT Defense owned 97.8% of the outstanding CDPLP common units (“common units”) and there were no preferred units outstanding. Common units not owned by COPT Defense carry certain redemption rights. The number of common units owned by COPT Defense is equivalent to the number of outstanding common shares of beneficial interest (“common shares”) of COPT Defense, and the entitlement of common units to quarterly distributions and payments in liquidation is substantially the same as that of COPT Defense common shareholders.</span></div><div style="text-indent:18pt"><span><br/></span></div><div style="text-indent:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">In September 2023, the ticker symbol under which our common shares are publicly traded on the New York Stock Exchange (“NYSE”) changed from “OFC” to “CDP”.</span></div>
CY2023	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:700;line-height:120%">Reclassifications</span></div><div><span><br/></span></div><div style="text-indent:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">We reclassified certain amounts from prior periods to conform to the current period presentation of our consolidated financial statements with no effect on previously reported net income or equity.</span></div>
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:700;line-height:120%">Use of Estimates in the Preparation of Financial Statements</span></div><div style="text-indent:18pt"><span><br/></span></div><div style="margin-bottom:12pt;text-indent:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">We make estimates and assumptions when preparing financial statements under generally accepted accounting principles (“GAAP”). These estimates and assumptions affect various matters, including:</span></div><div style="padding-left:18pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">></span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:12.75pt">the reported amounts of assets and liabilities in our consolidated balance sheets as of the dates of the financial statements; </span></div><div style="padding-left:18pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">></span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:12.75pt">the disclosure of contingent assets and liabilities as of the dates of the financial statements; and </span></div><div style="padding-left:18pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">></span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:12.75pt">the reported amounts of revenues and expenses in our consolidated statements of operations during the reporting periods. </span></div>Significant estimates are inherent in the presentation of our financial statements in a number of areas, including the evaluation of the collectability of accounts and deferred rent receivable, the determination of estimated useful lives of assets, the determination of lease terms, the evaluation of long-lived assets for impairment, the amount of impairment losses recognized, the allocation of property acquisition costs, the amount of revenue recognized relating to tenant improvements, the level of expense recognized in connection with share-based compensation and the determination of accounting method for investments. Actual results could differ from these and other estimates.
CY2023	ofc	Period After Cessation Of Major Construction Activities For Considering Property To Be Operational If Leases Have Not Commenced Earlier PeriodAfterCessationOfMajorConstructionActivitiesForConsideringPropertyToBeOperationalIfLeasesHaveNotCommencedEarlier	P1Y
CY2023	ofc	Period After Cessation Of Major Construction Activities For Considering Property To Be Partially Operational If Leases Have Commenced Earlier PeriodAfterCessationOfMajorConstructionActivitiesForConsideringPropertyToBePartiallyOperationalIfLeasesHaveCommencedEarlier	P1Y
CY2023	ofc	Periodusedrecoveryanalysisfor Potentially Impaired Long Lived Asset Heldand Used PeriodusedrecoveryanalysisforPotentiallyImpairedLongLivedAssetHeldandUsed	P10Y
CY2023Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	193888000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	187036000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	6852000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	197468000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	187509000	usd
CY2022Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	9959000	usd
CY2023Q4	ofc	Number Of Compensation Arrangements NumberOfCompensationArrangements	3	compensation_arrangement
CY2023	ofc	Numberof Different Formsof Share Based Compensation NumberofDifferentFormsofShareBasedCompensation	4	form
CY2023Q4	ofc	Approximate Amountbywhich Net Basisof Assetsand Liabilitiesfor Tax Reporting Purposesis Higher Lowerthan Amount Reportedon Consolidated Balance Sheet ApproximateAmountbywhichNetBasisofAssetsandLiabilitiesforTaxReportingPurposesisHigherLowerthanAmountReportedonConsolidatedBalanceSheet	236000000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	466559000	usd
CY2023Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Next Twelve Months SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextTwelveMonths	960000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	404835000	usd
CY2023Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Two Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears	960000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	341126000	usd
CY2023Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Three Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears	960000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	305907000	usd
CY2023Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Four Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears	960000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	252628000	usd
CY2023Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Five Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFiveYears	961000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	1100744000	usd
CY2023Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Thereafter SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThereafter	1635000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	2871799000	usd
CY2023Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived	6436000	usd
CY2023Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Undiscounted Excess Amount SalesTypeAndDirectFinancingLeasesLeaseReceivableUndiscountedExcessAmount	1338000	usd
CY2023Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable SalesTypeAndDirectFinancingLeasesLeaseReceivable	5098000	usd
CY2023Q4	ofc	Lessee Rightof Use Asset LesseeRightofUseAsset	43900000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	41296000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	37020000	usd
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	2565000	usd
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	2207000	usd
CY2023Q4	ofc	Lease Rightof Use Assets LeaseRightofUseAssets	43861000	usd
CY2022Q4	ofc	Lease Rightof Use Assets LeaseRightofUseAssets	39227000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	33931000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	28759000	usd
CY2023Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	415000	usd
CY2022Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	0	usd
CY2023Q4	ofc	Lease Liability LeaseLiability	34346000	usd
CY2022Q4	ofc	Lease Liability LeaseLiability	28759000	usd
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P49Y
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0731
CY2023Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P9Y
CY2023Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0914
CY2023	us-gaap	Lease Cost LeaseCost	7139000	usd
CY2022	us-gaap	Lease Cost LeaseCost	4210000	usd
CY2021	us-gaap	Lease Cost LeaseCost	4087000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	6056000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	3355000	usd
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	3206000	usd
CY2023	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	42000	usd
CY2022	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	0	usd
CY2021	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	0	usd
CY2023	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	20000	usd
CY2022	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	0	usd
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	14000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	6763000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	61000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	2380000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	63000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	1791000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	65000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	1807000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	66000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	1823000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	69000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	138189000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	297000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	152753000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	621000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	118822000	usd
CY2023Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	206000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	33931000	usd
CY2023Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	415000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	2416287000	usd
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	2231794000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	29983000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	23717000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	646300000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	0	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	345000000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1400000000	usd
CY2023Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	2445000000	usd
CY2023Q4	ofc	Debt Instrument Unamortized Discount Premiumand Deferred Financing Costs Net DebtInstrumentUnamortizedDiscountPremiumandDeferredFinancingCostsNet	28700000	usd
CY2023	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	4500000	usd
CY2022	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	6700000	usd
CY2021	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	6500000	usd
CY2021	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	3160000	usd
CY2023	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	72000	usd
CY2022	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-436000	usd
CY2021	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	1615000	usd
CY2023	ofc	Noncontrolling Interest Increase Decrease For Reclassification Of Redeemable Noncontrolling Interest To Equity NoncontrollingInterestIncreaseDecreaseForReclassificationOfRedeemableNoncontrollingInterestToEquity	2670000	usd
CY2022	ofc	Noncontrolling Interest Increase Decrease For Reclassification Of Redeemable Noncontrolling Interest To Equity NoncontrollingInterestIncreaseDecreaseForReclassificationOfRedeemableNoncontrollingInterestToEquity	0	usd
CY2021	ofc	Noncontrolling Interest Increase Decrease For Reclassification Of Redeemable Noncontrolling Interest To Equity NoncontrollingInterestIncreaseDecreaseForReclassificationOfRedeemableNoncontrollingInterestToEquity	0	usd
CY2023Q4	us-gaap	Interest Rate Derivatives At Fair Value Net InterestRateDerivativesAtFairValueNet	2558000	usd
CY2022Q4	us-gaap	Interest Rate Derivatives At Fair Value Net InterestRateDerivativesAtFairValueNet	2631000	usd
CY2022Q4	us-gaap	Redeemable Noncontrolling Interest Equity Fair Value RedeemableNoncontrollingInterestEquityFairValue	26293000	usd
CY2021Q4	us-gaap	Redeemable Noncontrolling Interest Equity Fair Value RedeemableNoncontrollingInterestEquityFairValue	26898000	usd
CY2020Q4	us-gaap	Redeemable Noncontrolling Interest Equity Fair Value RedeemableNoncontrollingInterestEquityFairValue	25430000	usd
CY2023	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	2569000	usd
CY2022	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	2976000	usd
CY2021	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	3307000	usd
CY2023	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	2454000	usd
CY2022	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	2807000	usd
CY2023Q4	us-gaap	Redeemable Noncontrolling Interest Equity Fair Value RedeemableNoncontrollingInterestEquityFairValue	23580000	usd
CY2022Q4	us-gaap	Redeemable Noncontrolling Interest Equity Fair Value RedeemableNoncontrollingInterestEquityFairValue	26293000	usd
CY2021Q4	us-gaap	Redeemable Noncontrolling Interest Equity Fair Value RedeemableNoncontrollingInterestEquityFairValue	26898000	usd
CY2021	us-gaap	Stock Issued During Period Shares Conversion Of Units StockIssuedDuringPeriodSharesConversionOfUnits	8054	shares
CY2022	ofc	Operating Partnership Unit Conversion Rate To Shares OperatingPartnershipUnitConversionRateToShares	1
CY2023	ofc	Operating Partnership Unit Conversion Rate To Shares OperatingPartnershipUnitConversionRateToShares	1
CY2021	ofc	Operating Partnership Unit Conversion Rate To Shares OperatingPartnershipUnitConversionRateToShares	1
CY2023	us-gaap	Stock Issued During Period Shares Conversion Of Units StockIssuedDuringPeriodSharesConversionOfUnits	0	shares
CY2022	us-gaap	Stock Issued During Period Shares Conversion Of Units StockIssuedDuringPeriodSharesConversionOfUnits	0	shares
CY2023	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.14
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.10
CY2022	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.10
CY2023	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9120000	usd
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9637000	usd
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8698000	usd
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	60179000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	154632000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	107876000	usd
CY2023	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	0	usd
CY2022	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	1980000	usd
CY2021	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	30490000	usd
CY2023	us-gaap	Revenues Revenues	684982000	usd
CY2022	us-gaap	Revenues Revenues	739030000	usd
CY2021	us-gaap	Revenues Revenues	664446000	usd
CY2023	ofc	Cost Of Other Property Operating Expense Excluding Discontinued Operations CostOfOtherPropertyOperatingExpenseExcludingDiscontinuedOperations	247385000	usd
CY2022	ofc	Cost Of Other Property Operating Expense Excluding Discontinued Operations CostOfOtherPropertyOperatingExpenseExcludingDiscontinuedOperations	227430000	usd
CY2021	ofc	Cost Of Other Property Operating Expense Excluding Discontinued Operations CostOfOtherPropertyOperatingExpenseExcludingDiscontinuedOperations	213377000	usd
CY2023	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2022	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-609000	usd
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-100626000	usd
CY2023	ofc	Unconsolidated Joint Venture Net Operating Income Allocableto Parent UnconsolidatedJointVentureNetOperatingIncomeAllocabletoParent	6659000	usd
CY2022	ofc	Unconsolidated Joint Venture Net Operating Income Allocableto Parent UnconsolidatedJointVentureNetOperatingIncomeAllocabletoParent	4327000	usd
CY2021	ofc	Unconsolidated Joint Venture Net Operating Income Allocableto Parent UnconsolidatedJointVentureNetOperatingIncomeAllocabletoParent	4029000	usd
CY2023	ofc	Income Lossfrom Equity Method Investments Allocableto Depreciation Amortizationand Interest Expense IncomeLossfromEquityMethodInvestmentsAllocabletoDepreciationAmortizationandInterestExpense	6917000	usd
CY2022	ofc	Income Lossfrom Equity Method Investments Allocableto Depreciation Amortizationand Interest Expense IncomeLossfromEquityMethodInvestmentsAllocabletoDepreciationAmortizationandInterestExpense	3145000	usd
CY2021	ofc	Income Lossfrom Equity Method Investments Allocableto Depreciation Amortizationand Interest Expense IncomeLossfromEquityMethodInvestmentsAllocabletoDepreciationAmortizationandInterestExpense	2930000	usd
CY2023	ofc	Income Lossin Non Real Estate Equity Method Investments IncomeLossinNonRealEstateEquityMethodInvestments	-3000	usd
CY2022	ofc	Income Lossin Non Real Estate Equity Method Investments IncomeLossinNonRealEstateEquityMethodInvestments	561000	usd
CY2021	ofc	Income Lossin Non Real Estate Equity Method Investments IncomeLossinNonRealEstateEquityMethodInvestments	-6000	usd
CY2023	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-261000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1743000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1093000	usd
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	60179000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	154632000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	107876000	usd
CY2023	ofc	Construction Contract And Other Service Expenses ConstructionContractAndOtherServiceExpenses	57416000	usd
CY2022	ofc	Construction Contract And Other Service Expenses ConstructionContractAndOtherServiceExpenses	149963000	usd
CY2021	ofc	Construction Contract And Other Service Expenses ConstructionContractAndOtherServiceExpenses	104053000	usd
CY2023	ofc	Depreciation And Amortization For Real Estate Operations DepreciationAndAmortizationForRealEstateOperations	148950000	usd
CY2022	ofc	Depreciation And Amortization For Real Estate Operations DepreciationAndAmortizationForRealEstateOperations	141230000	usd
CY2021	ofc	Depreciation And Amortization For Real Estate Operations DepreciationAndAmortizationForRealEstateOperations	137543000	usd
CY2023	us-gaap	Asset Impairment Charges AssetImpairmentCharges	252797000	usd
CY2022	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	usd
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	usd
CY2023	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	42769000	usd
CY2022	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	38991000	usd
CY2021	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	40774000	usd
CY2023	us-gaap	Interest Expense InterestExpense	71142000	usd
CY2022	us-gaap	Interest Expense InterestExpense	61174000	usd
CY2021	us-gaap	Interest Expense InterestExpense	65398000	usd
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	12587000	usd
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	9070000	usd
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	9007000	usd
CY2023	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	49392000	usd
CY2022	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	19250000	usd
CY2021	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	65590000	usd
CY2023	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-261000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1743000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1093000	usd
CY2023	ofc	Unconsolidated Joint Venture Net Operating Income Allocableto Parent UnconsolidatedJointVentureNetOperatingIncomeAllocabletoParent	6659000	usd
CY2022	ofc	Unconsolidated Joint Venture Net Operating Income Allocableto Parent UnconsolidatedJointVentureNetOperatingIncomeAllocabletoParent	4327000	usd
CY2021	ofc	Unconsolidated Joint Venture Net Operating Income Allocableto Parent UnconsolidatedJointVentureNetOperatingIncomeAllocabletoParent	4029000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	588000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	447000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	145000	usd
CY2023	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	0	usd
CY2022	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	1980000	usd
CY2021	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	30490000	usd
CY2023	us-gaap	Disposal Group Including Discontinued Operation Operating Expense DisposalGroupIncludingDiscontinuedOperationOperatingExpense	0	usd
CY2022	us-gaap	Disposal Group Including Discontinued Operation Operating Expense DisposalGroupIncludingDiscontinuedOperationOperatingExpense	971000	usd
CY2021	us-gaap	Disposal Group Including Discontinued Operation Operating Expense DisposalGroupIncludingDiscontinuedOperationOperatingExpense	16842000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-74347000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	149249000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	78220000	usd
CY2023Q4	us-gaap	Assets Assets	4246966000	usd
CY2022Q4	us-gaap	Assets Assets	4257275000	usd
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	60179000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	154632000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	107876000	usd
CY2020Q4	ofc	Credit Losses Financial Assetsand Other Instruments Allowancefor Credit Loss CreditLossesFinancialAssetsandOtherInstrumentsAllowanceforCreditLoss	4697000	usd
CY2021	ofc	Credit Losses Financial Assetsand Other Instruments Allowancefor Credit Loss Expense Reversal CreditLossesFinancialAssetsandOtherInstrumentsAllowanceforCreditLossExpenseReversal	-1128000	usd
CY2021Q4	ofc	Credit Losses Financial Assetsand Other Instruments Allowancefor Credit Loss CreditLossesFinancialAssetsandOtherInstrumentsAllowanceforCreditLoss	3569000	usd
CY2022	ofc	Credit Losses Financial Assetsand Other Instruments Allowancefor Credit Loss Expense Reversal CreditLossesFinancialAssetsandOtherInstrumentsAllowanceforCreditLossExpenseReversal	271000	usd
CY2022Q4	ofc	Credit Losses Financial Assetsand Other Instruments Allowancefor Credit Loss CreditLossesFinancialAssetsandOtherInstrumentsAllowanceforCreditLoss	3840000	usd
CY2023	ofc	Credit Losses Financial Assetsand Other Instruments Allowancefor Credit Loss Expense Reversal CreditLossesFinancialAssetsandOtherInstrumentsAllowanceforCreditLossExpenseReversal	-611000	usd
CY2023	ofc	Credit Losses Financial Assets And Other Instruments Write Offs CreditLossesFinancialAssetsAndOtherInstrumentsWriteOffs	33000	usd
CY2023Q4	ofc	Credit Losses Financial Assetsand Other Instruments Allowancefor Credit Loss CreditLossesFinancialAssetsandOtherInstrumentsAllowanceforCreditLoss	3196000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-74347000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	149249000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	78220000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	-878000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	5372000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	4994000	usd
CY2023	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	1199000	usd
CY2022	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	451000	usd
CY2021	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	467000	usd
CY2023	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	-74668000	usd
CY2022	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	143426000	usd
CY2021	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	72759000	usd
CY2023	ofc	Dilutive Securities Effecton Basic Earnings Per Share Dilutive Redeemable Noncontrolling Interests DilutiveSecuritiesEffectonBasicEarningsPerShareDilutiveRedeemableNoncontrollingInterests	0	usd
CY2022	ofc	Dilutive Securities Effecton Basic Earnings Per Share Dilutive Redeemable Noncontrolling Interests DilutiveSecuritiesEffectonBasicEarningsPerShareDilutiveRedeemableNoncontrollingInterests	-169000	usd
CY2021	ofc	Dilutive Securities Effecton Basic Earnings Per Share Dilutive Redeemable Noncontrolling Interests DilutiveSecuritiesEffectonBasicEarningsPerShareDilutiveRedeemableNoncontrollingInterests	-128000	usd
CY2023	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	usd
CY2022	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	78000	usd
CY2021	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	44000	usd
CY2023	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Diluted NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted	-74668000	usd
CY2022	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Diluted NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted	143335000	usd
CY2021	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Diluted NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted	72675000	usd
CY2023	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	usd
CY2022	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	29573000	usd
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	3358000	usd
CY2023	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	0	usd
CY2022	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	421000	usd
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	43000	usd
CY2023	ofc	Income Loss From Discontinued Operations Attributable To Share Based Compensation Awards For Diluted Eps IncomeLossFromDiscontinuedOperationsAttributableToShareBasedCompensationAwardsForDilutedEPS	0	usd
CY2022	ofc	Income Loss From Discontinued Operations Attributable To Share Based Compensation Awards For Diluted Eps IncomeLossFromDiscontinuedOperationsAttributableToShareBasedCompensationAwardsForDilutedEPS	-90000	usd
CY2021	ofc	Income Loss From Discontinued Operations Attributable To Share Based Compensation Awards For Diluted Eps IncomeLossFromDiscontinuedOperationsAttributableToShareBasedCompensationAwardsForDilutedEPS	6000	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-74668000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	172397000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	75996000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	112178000	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	112073000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	111960000	shares
CY2023	ofc	Incremental Common Shares Attributableto Dilutive Effectof Redeemable Noncontrolling Interests IncrementalCommonSharesAttributabletoDilutiveEffectofRedeemableNoncontrollingInterests	0	shares
CY2022	ofc	Incremental Common Shares Attributableto Dilutive Effectof Redeemable Noncontrolling Interests IncrementalCommonSharesAttributabletoDilutiveEffectofRedeemableNoncontrollingInterests	116000	shares
CY2021	ofc	Incremental Common Shares Attributableto Dilutive Effectof Redeemable Noncontrolling Interests IncrementalCommonSharesAttributabletoDilutiveEffectofRedeemableNoncontrollingInterests	128000	shares
CY2023	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2022	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	431000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	330000	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	112178000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	112620000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	112418000	shares
CY2023	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.67
CY2022	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.28
CY2021	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.65
CY2023	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2022	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.26
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.03
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.67
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.54
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.68
CY2023	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.67
CY2022	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.27
CY2021	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.65
CY2023	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0
CY2022	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0.26
CY2021	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0.03
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.67
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.53
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.68
CY2023Q4	us-gaap	Loss Contingency Estimate Of Possible Loss LossContingencyEstimateOfPossibleLoss	4500000	usd
CY2023Q4	ofc	Property Subjectto Environmental Indemnity Numberof Properties PropertySubjecttoEnvironmentalIndemnityNumberofProperties	3	property
CY2023Q4	ofc	Maximum Additional Costs Agreed To Be Paid By The Entity Under Environmental Indemnification Agreement MaximumAdditionalCostsAgreedToBePaidByTheEntityUnderEnvironmentalIndemnificationAgreement	19000000	usd
CY2023Q4	srt	Real Estate And Accumulated Depreciation Amount Of Encumbrances RealEstateAndAccumulatedDepreciationAmountOfEncumbrances	99539000	usd
CY2023Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Land RealEstateAndAccumulatedDepreciationInitialCostOfLand	570610000	usd
CY2023Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	3607812000	usd
CY2023Q4	us-gaap	Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Carrying Costs RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	725418000	usd
CY2023Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Land RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	570610000	usd
CY2023Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	4333230000	usd
CY2023Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	4903840000	usd
CY2023Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1400162000	usd
CY2023Q4	srt	Real Estate Federal Income Tax Basis RealEstateFederalIncomeTaxBasis	3800000000	usd
CY2022Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	4986537000	usd
CY2021Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	4959709000	usd
CY2020Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	4686802000	usd
CY2023	us-gaap	Real Estate Improvements RealEstateImprovements	333081000	usd
CY2022	us-gaap	Real Estate Improvements RealEstateImprovements	350702000	usd
CY2021	us-gaap	Real Estate Improvements RealEstateImprovements	342684000	usd
CY2023	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	162981000	usd
CY2022	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	323874000	usd
CY2021	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	103097000	usd
CY2023	ofc	Real Estate Impairments RealEstateImpairments	252797000	usd
CY2022	ofc	Real Estate Impairments RealEstateImpairments	0	usd
CY2021	ofc	Real Estate Impairments RealEstateImpairments	0	usd
CY2023	ofc	Real Estate Other Dispositions RealEstateOtherDispositions	0	usd
CY2022	ofc	Real Estate Other Dispositions RealEstateOtherDispositions	0	usd
CY2021	ofc	Real Estate Other Dispositions RealEstateOtherDispositions	4511000	usd
CY2023	ofc	Sec Schedule1228 Real Estate Companies Investment In Real Estate Other Increase Deduction SECSchedule1228RealEstateCompaniesInvestmentInRealEstateOtherIncreaseDeduction	0	usd
CY2022	ofc	Sec Schedule1228 Real Estate Companies Investment In Real Estate Other Increase Deduction SECSchedule1228RealEstateCompaniesInvestmentInRealEstateOtherIncreaseDeduction	0	usd
CY2021	ofc	Sec Schedule1228 Real Estate Companies Investment In Real Estate Other Increase Deduction SECSchedule1228RealEstateCompaniesInvestmentInRealEstateOtherIncreaseDeduction	37831000	usd
CY2023Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	4903840000	usd
CY2022Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	4986537000	usd
CY2021Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	4959709000	usd
CY2022Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1273448000	usd
CY2021Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1234908000	usd
CY2020Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1124253000	usd
CY2023	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	132728000	usd
CY2022	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	124803000	usd
CY2021	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	130604000	usd
CY2023	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	6014000	usd
CY2022	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	86263000	usd
CY2021	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	15438000	usd
CY2023	ofc	Real Estate Accumulated Depreciation Other Dispositions RealEstateAccumulatedDepreciationOtherDispositions	0	usd
CY2022	ofc	Real Estate Accumulated Depreciation Other Dispositions RealEstateAccumulatedDepreciationOtherDispositions	0	usd
CY2021	ofc	Real Estate Accumulated Depreciation Other Dispositions RealEstateAccumulatedDepreciationOtherDispositions	4511000	usd
CY2023Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1400162000	usd
CY2022Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1273448000	usd
CY2021Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1234908000	usd

Files In Submission

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0000860546-24-000013.txt	Edgar Link	pending
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$CDP
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2024 Q1 Form 10-K Financial Statement

#000086054624000013 Filed on February 22, 2024

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$CDP COPT Defense Properties Stock $cdp

2024 Q1 Form 10-K Financial Statement

#000086054624000013 Filed on February 22, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CDP
COPT Defense Properties Stock $cdp