$FRT
FEDERAL REALTY INVESTMENT TRUST Stock $frt

$frt Overview Financials Valuation SEC Filings Company Website

2020 Q1 Form 10-K Financial Statement

#000003490320000008 Filed on February 10, 2020

Income Statement

Concept	2020 Q1	2019 Q4	2019 Q3
Revenue	$231.6M	$239.1M	$233.9M
YoY Change	-0.29%	1.6%	1.83%
Cost Of Revenue	$73.40M	$76.70M	$83.50M
YoY Change	2.09%	1.72%	17.61%
Gross Profit	$158.2M	$162.5M	$150.4M
YoY Change	-1.31%	1.63%	-5.29%
Gross Profit Margin	68.32%	67.95%	64.29%
Selling, General & Admin	$10.30M	$10.70M	$11.10M
YoY Change	7.29%	11.46%	46.05%
% of Gross Profit	6.51%	6.58%	7.38%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$62.20M	$61.50M	$59.60M
YoY Change	4.36%	-8.07%	-1.97%
% of Gross Profit	39.32%	37.85%	39.63%
Operating Expenses	$145.8M	$72.10M	$154.2M
YoY Change	3.32%	-5.87%	10.62%
Operating Profit	$85.74M	$176.2M	$94.02M
YoY Change	-5.87%	107.71%	0.59%
Interest Expense	$28.45M	-$27.30M	$27.05M
YoY Change	1.47%	-4.21%	-3.96%
% of Operating Profit	33.18%	-15.49%	28.77%
Other Income/Expense, Net
YoY Change
Pretax Income	$56.40M	$149.0M	$67.10M
YoY Change	-8.74%	171.4%	4.52%
Income Tax
% Of Pretax Income
Net Earnings	$54.76M	$147.4M	$65.47M
YoY Change	-8.95%	170.34%	4.65%
Net Earnings / Revenue	23.65%	61.62%	27.98%
Basic Earnings Per Share	$0.70	$1.92	$0.84
Diluted Earnings Per Share	$0.70	$1.92	$0.84
COMMON SHARES
Basic Shares Outstanding	75.65M shares	75.52M shares	74.83M shares
Diluted Shares Outstanding	75.36M shares		74.83M shares

Balance Sheet

Concept	2020 Q1	2019 Q4	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$994.7M	$127.4M	$162.5M
YoY Change	2213.26%	98.75%	287.83%
Cash & Equivalents	$994.7M	$127.4M	$162.5M
Short-Term Investments
Other Short-Term Assets	$192.0M	$200.9M	$195.1M
YoY Change	5.15%	-24.39%	-33.21%
Inventory
Prepaid Expenses
Receivables	$153.2M	$152.6M	$143.9M
Other Receivables	$30.40M	$30.40M	$30.40M
Total Short-Term Assets	$1.370B	$511.3M	$531.9M
YoY Change	247.97%	1.75%	3.12%
LONG-TERM ASSETS
Property, Plant & Equipment	$6.333B	$6.227B	$5.951B
YoY Change	7.76%	8.42%	4.04%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$26.00M	$28.60M	$30.00M
YoY Change	-14.75%	6.32%	8.7%
Other Assets	$30.50M	$27.90M	$94.20M
YoY Change	-39.0%	68.07%	328.18%
Total Long-Term Assets	$6.390B	$6.284B	$6.076B
YoY Change	7.25%	8.58%	5.3%
TOTAL ASSETS
Total Short-Term Assets	$1.370B	$511.3M	$531.9M
Total Long-Term Assets	$6.390B	$6.284B	$6.076B
Total Assets	$7.760B	$6.795B	$6.608B
YoY Change	22.18%	8.03%	5.12%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$246.0M	$255.5M	$221.8M
YoY Change	57.69%	43.62%	20.09%
Accrued Expenses	$74.10M	$73.60M	$74.00M
YoY Change	-1.33%
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	$423.9M	$432.5M	$397.6M
YoY Change	28.84%	57.85%	41.9%
LONG-TERM LIABILITIES
Long-Term Debt	$4.427B	$3.429B	$3.349B
YoY Change	37.1%	6.18%	2.84%
Other Long-Term Liabilities	$150.4M	$157.9M	$165.5M
YoY Change	-4.51%	-13.67%	-4.89%
Total Long-Term Liabilities	$4.577B	$3.587B	$3.515B
YoY Change	35.17%	5.11%	2.45%
TOTAL LIABILITIES
Total Short-Term Liabilities	$423.9M	$432.5M	$397.6M
Total Long-Term Liabilities	$4.577B	$3.587B	$3.515B
Total Liabilities	$5.001B	$4.019B	$3.912B
YoY Change	34.61%	9.03%	5.43%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock	$3.168B	$3.167B	$3.168B
YoY Change	3.09%	5.39%	7.5%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.502B	$2.535B	$2.470B
YoY Change
Total Liabilities & Shareholders Equity	$7.760B	$6.795B	$6.608B
YoY Change	22.18%	8.03%	5.12%

Cashflow Statement

Concept	2020 Q1	2019 Q4	2019 Q3
OPERATING ACTIVITIES
Net Income	$54.76M	$147.4M	$65.47M
YoY Change	-8.95%	170.34%	4.65%
Depreciation, Depletion And Amortization	$62.20M	$61.50M	$59.60M
YoY Change	4.36%	-8.07%	-1.97%
Cash From Operating Activities	$118.7M	$117.6M	$102.0M
YoY Change	13.18%	-22.63%	0.39%
INVESTING ACTIVITIES
Capital Expenditures	-$129.5M	-$289.2M	-$129.8M
YoY Change	26.22%	162.91%	53.97%
Acquisitions
YoY Change
Other Investing Activities	-$22.40M	$199.9M	$16.00M
YoY Change	1500.0%	577.63%	-68.75%
Cash From Investing Activities	-$151.8M	-$89.20M	-$113.9M
YoY Change	45.94%	10.95%	244.11%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$19.00K
YoY Change	-99.97%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$898.9M	-81.60M	78.50M
YoY Change	-3428.99%	40.69%	-195.04%
NET CHANGE
Cash From Operating Activities	$118.7M	117.6M	102.0M
Cash From Investing Activities	-$151.8M	-89.20M	-113.9M
Cash From Financing Activities	$898.9M	-81.60M	78.50M
Net Change In Cash	$865.8M	-53.20M	66.60M
YoY Change	-3414.75%	-491.18%	-572.34%
FREE CASH FLOW
Cash From Operating Activities	$118.7M	$117.6M	$102.0M
Capital Expenditures	-$129.5M	-$289.2M	-$129.8M
Free Cash Flow	$248.2M	$406.8M	$231.8M
YoY Change	19.63%	55.27%	24.69%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000034903
CY2018Q4	frt	Accumulated Depreciation And Amortization Consolidated Variable Interest Entities AccumulatedDepreciationAndAmortizationConsolidatedVariableInterestEntities	292374000	USD
CY2019Q4	frt	Accumulated Depreciation And Amortization Consolidated Variable Interest Entities AccumulatedDepreciationAndAmortizationConsolidatedVariableInterestEntities	296165000	USD
CY2018	frt	Capitalizedinternalleasingandexternallegalleasingcosts Capitalizedinternalleasingandexternallegalleasingcosts	7500000	USD
CY2019	frt	Capitalizedinternalleasingandexternallegalleasingcosts Capitalizedinternalleasingandexternallegalleasingcosts	2200000	USD
CY2017	frt	Commonsharesqualifieddividendstaxrate Commonsharesqualifieddividendstaxrate	0.1500
CY2018	frt	Commonsharesqualifieddividendstaxrate Commonsharesqualifieddividendstaxrate	0.1500
CY2019	frt	Commonsharesqualifieddividendstaxrate Commonsharesqualifieddividendstaxrate	0.1500
CY2018Q4	frt	Constructioninprogresofconsolidatedvariableieestentity Constructioninprogresofconsolidatedvariableieestentity	51313000	USD
CY2019Q4	frt	Constructioninprogresofconsolidatedvariableieestentity Constructioninprogresofconsolidatedvariableieestentity	102583000	USD
CY2018Q4	frt	Mortgage Payable From Consolidated Variable Interest Entities MortgagePayableFromConsolidatedVariableInterestEntities	444388000	USD
CY2019Q4	frt	Mortgage Payable From Consolidated Variable Interest Entities MortgagePayableFromConsolidatedVariableInterestEntities	469184000	USD
CY2018Q4	frt	Operating Real Estate From Consolidated Variable Interest Entities OperatingRealEstateFromConsolidatedVariableInterestEntities	1701804000	USD
CY2019Q4	frt	Operating Real Estate From Consolidated Variable Interest Entities OperatingRealEstateFromConsolidatedVariableInterestEntities	1676866000	USD
CY2017	frt	Preferred Stock Qualified Dividends Tax Rate PreferredStockQualifiedDividendsTaxRate	0.1500
CY2018	frt	Preferred Stock Qualified Dividends Tax Rate PreferredStockQualifiedDividendsTaxRate	0.1500
CY2019	frt	Preferred Stock Qualified Dividends Tax Rate PreferredStockQualifiedDividendsTaxRate	0.1500
CY2018Q4	srt	Mortgage Loans On Real Estate Federal Income Tax Basis1 MortgageLoansOnRealEstateFederalIncomeTaxBasis1	30400000	USD
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	682	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	682	shares
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	74249633	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	75540804	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	74249633	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	75540804	shares
CY2019Q1	us-gaap	Cumulative Effect On Retained Earnings Tax1 CumulativeEffectOnRetainedEarningsTax1	7100000	USD
CY2017	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	200000	shares
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CY2019Q4	us-gaap	Number Of Properties Subject To Ground Leases NumberOfPropertiesSubjectToGroundLeases	14	property
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CY2019	dei	Document Annual Report DocumentAnnualReport	true
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CY2018Q4	us-gaap	Variable Interest Entity Consolidated Carrying Amount Assets And Liabilities Net VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet	1500000000	USD
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	1-07533
CY2019	dei	Entity Registrant Name EntityRegistrantName	FEDERAL REALTY INVESTMENT TRUST
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	52-0782497
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	1626 East Jefferson Street
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Rockville
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	MD
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	20852
CY2019	dei	City Area Code CityAreaCode	301)
CY2019	dei	Local Phone Number LocalPhoneNumber	998-8100
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q2	dei	Entity Public Float EntityPublicFloat	9700000000	USD
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CY2019Q4	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	30429000	USD
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CY2017	us-gaap	Interest Income Other InterestIncomeOther	475000	USD
CY2019	us-gaap	Interest Expense InterestExpense	109623000	USD
CY2018	us-gaap	Interest Expense InterestExpense	110154000	USD
CY2017	us-gaap	Interest Expense InterestExpense	100125000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-12273000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-2012000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3398000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-417000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	360542000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	249026000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	297870000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6676000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7119000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7956000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	353866000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	241907000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	289914000	USD
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	8042000	USD
CY2018	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	8042000	USD
CY2017	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2458000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	345824000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	233865000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	287456000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.61
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.18
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.97
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	74766000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	73274000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	72117000	shares
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.61
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.18
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.97
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	74766000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	73302000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	72233000	shares
CY2019	us-gaap	Profit Loss ProfitLoss	360542000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	249026000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	297870000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-397000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-438000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2599000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	360145000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	248588000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	300469000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	6676000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	7119000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	7956000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	353469000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	241469000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	292513000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2075835000	USD
CY2017	us-gaap	Cumulative Effect On Retained Earnings Net Of Tax1 CumulativeEffectOnRetainedEarningsNetOfTax1	0	USD
CY2017	frt	Profit Loss Excluding Redeemable Noncontrolling Interests ProfitLossExcludingRedeemableNoncontrollingInterests	293996000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2599000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	287006000	USD
CY2017	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	2458000	USD
CY2017	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	5560000	USD
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	9979000	USD
CY2017	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2373000	USD
CY2017	frt	Share Based Compensation Expense Net Value ShareBasedCompensationExpenseNetValue	12371000	USD
CY2017	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	4229000	USD
CY2017	frt	Conversion And Redemption Of Operating Partnership Units ConversionAndRedemptionOfOperatingPartnershipUnits	0	USD
CY2017	frt	Contributionsfromnoncontrollinginterests Contributionsfromnoncontrollinginterests	35331000	USD
CY2017	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	5536000	USD
CY2017	us-gaap	Stockholders Equity Other StockholdersEquityOther	-10606000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2391514000	USD
CY2018	us-gaap	Cumulative Effect On Retained Earnings Net Of Tax1 CumulativeEffectOnRetainedEarningsNetOfTax1	-6028000	USD
CY2018	frt	Profit Loss Excluding Redeemable Noncontrolling Interests ProfitLossExcludingRedeemableNoncontrollingInterests	245161000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-438000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	297347000	USD
CY2018	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	8042000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	5175000	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	126071000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	4572000	USD
CY2018	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2159000	USD
CY2018	frt	Share Based Compensation Expense Net Value ShareBasedCompensationExpenseNetValue	12736000	USD
CY2018	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	958000	USD
CY2018	frt	Conversion And Redemption Of Operating Partnership Units ConversionAndRedemptionOfOperatingPartnershipUnits	6012000	USD
CY2018	frt	Contributionsfromnoncontrollinginterests Contributionsfromnoncontrollinginterests	4020000	USD
CY2018	us-gaap	Stockholders Equity Other StockholdersEquityOther	-5097000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2467330000	USD
CY2019	us-gaap	Cumulative Effect On Retained Earnings Net Of Tax1 CumulativeEffectOnRetainedEarningsNetOfTax1	-7098000	USD
CY2019	frt	Profit Loss Excluding Redeemable Noncontrolling Interests ProfitLossExcludingRedeemableNoncontrollingInterests	357112000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-397000	USD
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	310973000	USD
CY2019	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	8042000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	9961000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	142716000	USD
CY2019	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2095000	USD
CY2019	frt	Share Based Compensation Expense Net Value ShareBasedCompensationExpenseNetValue	13330000	USD
CY2019	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	4626000	USD
CY2019	frt	Conversion And Redemption Of Operating Partnership Units ConversionAndRedemptionOfOperatingPartnershipUnits	72000	USD
CY2019	frt	Contributionsfromnoncontrollinginterests Contributionsfromnoncontrollinginterests	243000	USD
CY2019	us-gaap	Stockholders Equity Other StockholdersEquityOther	5525000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2636132000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	360542000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	249026000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	297870000	USD
CY2019	frt	Adjustment Depreciation And Amortization AdjustmentDepreciationAndAmortization	239758000	USD
CY2018	frt	Adjustment Depreciation And Amortization AdjustmentDepreciationAndAmortization	244245000	USD
CY2017	frt	Adjustment Depreciation And Amortization AdjustmentDepreciationAndAmortization	216050000	USD
CY2019	us-gaap	Gain Loss On Sale Of Properties Net Of Applicable Income Taxes GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes	116393000	USD
CY2018	us-gaap	Gain Loss On Sale Of Properties Net Of Applicable Income Taxes GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes	11915000	USD
CY2017	us-gaap	Gain Loss On Sale Of Properties Net Of Applicable Income Taxes GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes	77922000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-12273000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-2012000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3398000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-417000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-169000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-4147000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	2674000	USD
CY2019	frt	Proceedsfromnewmarkettaxcredittransactionnetofdeferredcosts Proceedsfromnewmarkettaxcredittransactionnetofdeferredcosts	0	USD
CY2018	frt	Proceedsfromnewmarkettaxcredittransactionnetofdeferredcosts Proceedsfromnewmarkettaxcredittransactionnetofdeferredcosts	12353000	USD
CY2017	frt	Proceedsfromnewmarkettaxcredittransactionnetofdeferredcosts Proceedsfromnewmarkettaxcredittransactionnetofdeferredcosts	0	USD
CY2019	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	16128000	USD
CY2018	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-917000	USD
CY2017	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-2059000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	10253000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2070000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	3695000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	2327000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	2650000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	14242000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	461919000	USD
CY2019	frt	Increase Decrease In Security Deposits And Other Liabilities IncreaseDecreaseInSecurityDepositsAndOtherLiabilities	-115000	USD
CY2018	frt	Increase Decrease In Security Deposits And Other Liabilities IncreaseDecreaseInSecurityDepositsAndOtherLiabilities	13937000	USD
CY2017	frt	Increase Decrease In Security Deposits And Other Liabilities IncreaseDecreaseInSecurityDepositsAndOtherLiabilities	208000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	516688000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	458828000	USD
CY2019	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	204516000	USD
CY2018	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	13503000	USD
CY2017	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	437772000	USD
CY2019	frt	Capital Expenditures Development Redevelopment CapitalExpendituresDevelopmentRedevelopment	327074000	USD
CY2018	frt	Capital Expenditures Development Redevelopment CapitalExpendituresDevelopmentRedevelopment	302120000	USD
CY2017	frt	Capital Expenditures Development Redevelopment CapitalExpendituresDevelopmentRedevelopment	441984000	USD
CY2019	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	82836000	USD
CY2018	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	66138000	USD
CY2017	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	76952000	USD
CY2019	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	321997000	USD
CY2018	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	177775000	USD
CY2017	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	136055000	USD
CY2019	us-gaap	Payments For Proceeds From Real Estate Partnership Investment Net PaymentsForProceedsFromRealEstatePartnershipInvestmentNet	0	USD
CY2018	us-gaap	Payments For Proceeds From Real Estate Partnership Investment Net PaymentsForProceedsFromRealEstatePartnershipInvestmentNet	-37998000	USD
CY2017	us-gaap	Payments For Proceeds From Real Estate Partnership Investment Net PaymentsForProceedsFromRealEstatePartnershipInvestmentNet	0	USD
CY2019	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	1052000	USD
CY2018	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	1037000	USD
CY2017	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	696000	USD
CY2019	us-gaap	Proceeds From Distributions Received From Real Estate Partnerships ProceedsFromDistributionsReceivedFromRealEstatePartnerships	2765000	USD
CY2018	us-gaap	Proceeds From Distributions Received From Real Estate Partnerships ProceedsFromDistributionsReceivedFromRealEstatePartnerships	275000	USD
CY2017	us-gaap	Proceeds From Distributions Received From Real Estate Partnerships ProceedsFromDistributionsReceivedFromRealEstatePartnerships	1729000	USD
CY2019	us-gaap	Increase Decrease In Lease Acquisition Costs IncreaseDecreaseInLeaseAcquisitionCosts	25459000	USD
CY2018	us-gaap	Increase Decrease In Lease Acquisition Costs IncreaseDecreaseInLeaseAcquisitionCosts	25430000	USD
CY2017	us-gaap	Increase Decrease In Lease Acquisition Costs IncreaseDecreaseInLeaseAcquisitionCosts	16656000	USD
CY2019	frt	Issuance Repayments Of Mortgage And Other Notes Receivable Net IssuanceRepaymentsOfMortgageAndOtherNotesReceivableNet	357000	USD
CY2018	frt	Issuance Repayments Of Mortgage And Other Notes Receivable Net IssuanceRepaymentsOfMortgageAndOtherNotesReceivableNet	67000	USD
CY2017	frt	Issuance Repayments Of Mortgage And Other Notes Receivable Net IssuanceRepaymentsOfMortgageAndOtherNotesReceivableNet	1646000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-316532000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-192247000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-837922000	USD
CY2019	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-4012000	USD
CY2018	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-41000000	USD
CY2017	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	41000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	399913000	USD
CY2018	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	572134000	USD
CY2019	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
CY2018	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
CY2017	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	161930000	USD
CY2019	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	301029000	USD
CY2018	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	16620000	USD
CY2017	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	56328000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	143027000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	130918000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	118583000	USD
CY2019	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	144991000	USD
CY2019	frt	Dividends Paid To Common And Preferred Shareholders DividendsPaidToCommonAndPreferredShareholders	313649000	USD
CY2018	frt	Dividends Paid To Common And Preferred Shareholders DividendsPaidToCommonAndPreferredShareholders	301194000	USD
CY2017	frt	Dividends Paid To Common And Preferred Shareholders DividendsPaidToCommonAndPreferredShareholders	282995000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	4626000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	958000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	4229000	USD
CY2019	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	404000	USD
CY2018	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	2838000	USD
CY2017	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	13449000	USD
CY2019	frt	Paymentsofdividendsandredemptionsminorityinterest Paymentsofdividendsandredemptionsminorityinterest	20133000	USD
CY2018	frt	Paymentsofdividendsandredemptionsminorityinterest Paymentsofdividendsandredemptionsminorityinterest	15293000	USD
CY2017	frt	Paymentsofdividendsandredemptionsminorityinterest Paymentsofdividendsandredemptionsminorityinterest	15230000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-100105000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-241309000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	369445000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	45282000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	83132000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-9649000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	108332000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	25200000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	34849000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	153614000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	108332000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	25200000	USD
CY2019	us-gaap	Nature Of Operations NatureOfOperations	BUSINESS AND ORGANIZATION<div style="line-height:120%;padding-top:6px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Federal Realty Investment Trust (the “Trust”) is an equity real estate investment trust (“REIT”) specializing in the ownership, management, and redevelopment of retail and mixed-use properties. Our properties are located primarily in densely populated and affluent communities in strategically selected metropolitan markets in the Mid-Atlantic and Northeast regions of the United States, California, and South Florida. As of </span><span style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2019</span><span style="font-family:inherit;font-size:10pt;">, we owned or had a majority interest in community and neighborhood shopping centers and mixed-use properties which are operated as </span><span style="font-family:inherit;font-size:10pt;"><span>104</span></span><span style="font-family:inherit;font-size:10pt;"> predominantly retail real estate projects.</span></div><div style="line-height:120%;padding-top:12px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">We operate in a manner intended to enable us to qualify as a REIT for federal income tax purposes. A REIT that distributes at least </span><span style="font-family:inherit;font-size:10pt;"><span>90%</span></span><span style="font-family:inherit;font-size:10pt;"> of its taxable income to its shareholders each year and meets certain other conditions is not taxed on that portion of its taxable income which is distributed to its shareholders.</span></div>
CY2019Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	104	project
CY2019	frt	Minimum Percentage Of Taxable Income Distributed To Shareholders MinimumPercentageOfTaxableIncomeDistributedToShareholders	0.90
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-top:18px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Use of Estimates</span></div><div style="line-height:120%;padding-top:6px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America, referred to as “GAAP,” requires management to make estimates and assumptions that in certain circumstances affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities, and revenues and expenses. These estimates are prepared using management’s best judgment, after considering past, current and expected events and economic conditions. Actual results could differ from these estimates.</span></div>
CY2019	frt	Depreciation Expense Real Estate DepreciationExpenseRealEstate	215400000	USD
CY2018	frt	Depreciation Expense Real Estate DepreciationExpenseRealEstate	216000000.0	USD
CY2017	frt	Depreciation Expense Real Estate DepreciationExpenseRealEstate	193300000	USD
CY2019Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	131500000	USD
CY2019	frt	Residual Profit Maximum ResidualProfitMaximum	0.50
CY2019	srt	Mortgage Loans On Real Estate Number Of Loans MortgageLoansOnRealEstateNumberOfLoans	2
CY2019Q4	srt	Mortgage Loans On Real Estate Federal Income Tax Basis1 MortgageLoansOnRealEstateFederalIncomeTaxBasis1	30400000	USD
CY2019	srt	Mortgage Loans On Real Estate Interest Rate MortgageLoansOnRealEstateInterestRate	0.100
CY2018	srt	Mortgage Loans On Real Estate Interest Rate MortgageLoansOnRealEstateInterestRate	0.103
CY2019Q4	frt	Numberof Consolidated Variable Interest Entities NumberofConsolidatedVariableInterestEntities	18
CY2019Q4	us-gaap	Variable Interest Entity Consolidated Carrying Amount Assets And Liabilities Net VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet	1500000000	USD
CY2019Q4	frt	Mortgage Payable From Consolidated Variable Interest Entities MortgagePayableFromConsolidatedVariableInterestEntities	469200000	USD
CY2018Q4	frt	Mortgage Payable From Consolidated Variable Interest Entities MortgagePayableFromConsolidatedVariableInterestEntities	444400000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	136208000	USD
CY2017Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	141157000	USD
CY2019	frt	Redeemable Noncontrolling Interests Contributions RedeemableNoncontrollingInterestsContributions	9961000	USD
CY2018	frt	Redeemable Noncontrolling Interests Contributions RedeemableNoncontrollingInterestsContributions	354000	USD
CY2019	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	3430000	USD
CY2018	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	3865000	USD
CY2019	frt	Redeemable Noncontrolling Interests Distributions RedeemableNoncontrollingInterestsDistributions	15366000	USD
CY2018	frt	Redeemable Noncontrolling Interests Distributions RedeemableNoncontrollingInterestsDistributions	4071000	USD
CY2019	us-gaap	Temporary Equity Other Changes TemporaryEquityOtherChanges	5525000	USD
CY2018	us-gaap	Temporary Equity Other Changes TemporaryEquityOtherChanges	-5097000	USD
CY2019Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	139758000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	136208000	USD
CY2019	frt	Minimum Percentage Of Taxable Income Distributed To Shareholders MinimumPercentageOfTaxableIncomeDistributedToShareholders	0.90
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019	frt	Numberof Properties Exceeding Segment Reporting Threshold NumberofPropertiesExceedingSegmentReportingThreshold	0	property
CY2019	us-gaap	Factors Used To Identify Entitys Reportable Segments FactorsUsedToIdentifyEntitysReportableSegments	10% of our revenues or property operating income
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	1284000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	5824000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	6063000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	487000	USD
CY2019	us-gaap	Lease Cost LeaseCost	13658000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	5759000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	5561000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	47000	USD
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P18Y2M12D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P53Y8M12D
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.080
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.045
CY2019	us-gaap	Interest Costs Incurred InterestCostsIncurred	130110000	USD
CY2018	us-gaap	Interest Costs Incurred InterestCostsIncurred	129001000	USD
CY2017	us-gaap	Interest Costs Incurred InterestCostsIncurred	125684000	USD
CY2019	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	20487000	USD
CY2018	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	18847000	USD
CY2017	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	25559000	USD
CY2019	us-gaap	Interest Expense InterestExpense	109623000	USD
CY2018	us-gaap	Interest Expense InterestExpense	110154000	USD
CY2017	us-gaap	Interest Expense InterestExpense	100125000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	106180000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	107494000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	105201000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	483000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	675000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	352000	USD
CY2019	frt	Refinanceofmortgageloan Refinanceofmortgageloan	0	USD
CY2018	frt	Refinanceofmortgageloan Refinanceofmortgageloan	0	USD
CY2017	frt	Refinanceofmortgageloan Refinanceofmortgageloan	166823000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	98041000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	79401000	USD
CY2019	frt	Valueofdown Reit Operating Partnership Units Issuedin Connectionwith Business Acquisition ValueofdownREITOperatingPartnershipUnitsIssuedinConnectionwithBusinessAcquisition	0	USD
CY2018	frt	Valueofdown Reit Operating Partnership Units Issuedin Connectionwith Business Acquisition ValueofdownREITOperatingPartnershipUnitsIssuedinConnectionwithBusinessAcquisition	0	USD
CY2017	frt	Valueofdown Reit Operating Partnership Units Issuedin Connectionwith Business Acquisition ValueofdownREITOperatingPartnershipUnitsIssuedinConnectionwithBusinessAcquisition	5918000	USD
CY2019	frt	Redemptionofoperatingpartnershipunitsforcommonshares Redemptionofoperatingpartnershipunitsforcommonshares	14105000	USD
CY2018	frt	Redemptionofoperatingpartnershipunitsforcommonshares Redemptionofoperatingpartnershipunitsforcommonshares	101000	USD
CY2017	frt	Redemptionofoperatingpartnershipunitsforcommonshares Redemptionofoperatingpartnershipunitsforcommonshares	2569000	USD
CY2019	frt	Settlementofpartnerloanviadilution Settlementofpartnerloanviadilution	5379000	USD
CY2018	frt	Settlementofpartnerloanviadilution Settlementofpartnerloanviadilution	0	USD
CY2017	frt	Settlementofpartnerloanviadilution Settlementofpartnerloanviadilution	0	USD
CY2019	frt	Dividends Reinvested In Noncash Financing Transaction DividendsReinvestedInNoncashFinancingTransaction	1784000	USD
CY2018	frt	Dividends Reinvested In Noncash Financing Transaction DividendsReinvestedInNoncashFinancingTransaction	1884000	USD
CY2017	frt	Dividends Reinvested In Noncash Financing Transaction DividendsReinvestedInNoncashFinancingTransaction	2017000	USD
CY2019	frt	Noncashcontributionofnoncontrollinginterest Noncashcontributionofnoncontrollinginterest	0	USD
CY2018	frt	Noncashcontributionofnoncontrollinginterest Noncashcontributionofnoncontrollinginterest	1435000	USD
CY2017	frt	Noncashcontributionofnoncontrollinginterest Noncashcontributionofnoncontrollinginterest	0	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	127432000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	64087000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	26182000	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	44245000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	153614000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	108332000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	83134000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	36195000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	83732000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	36376000	USD
CY2019Q4	frt	Finite Lived Intangible Liabilities Gross FiniteLivedIntangibleLiabilitiesGross	186596000	USD
CY2019Q4	frt	Finite Lived Intangible Liabilities Accumulated Amortization FiniteLivedIntangibleLiabilitiesAccumulatedAmortization	68009000	USD
CY2018Q4	frt	Finite Lived Intangible Liabilities Gross FiniteLivedIntangibleLiabilitiesGross	198463000	USD
CY2018Q4	frt	Finite Lived Intangible Liabilities Accumulated Amortization FiniteLivedIntangibleLiabilitiesAccumulatedAmortization	66473000	USD
CY2019	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	9623000	USD
CY2018	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	12445000	USD
CY2017	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	10726000	USD
CY2019	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	6384000	USD
CY2018	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	6837000	USD
CY2017	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	4721000	USD
CY2019	frt	Amortizationof Below Market Lease Lessee AmortizationofBelowMarketLeaseLessee	828000	USD
CY2018	frt	Amortizationof Below Market Lease Lessee AmortizationofBelowMarketLeaseLessee	828000	USD
CY2017	frt	Amortizationof Below Market Lease Lessee AmortizationofBelowMarketLeaseLessee	781000	USD
CY2019	frt	Amortization Of Above And Below Market Leases Lessee AmortizationOfAboveAndBelowMarketLeasesLessee	303000	USD
CY2018	frt	Amortization Of Above And Below Market Leases Lessee AmortizationOfAboveAndBelowMarketLeasesLessee	323000	USD
CY2017	frt	Amortization Of Above And Below Market Leases Lessee AmortizationOfAboveAndBelowMarketLeasesLessee	491000	USD
CY2019Q4	us-gaap	Below Market Lease Amortization Income Next Twelve Months BelowMarketLeaseAmortizationIncomeNextTwelveMonths	8235000	USD
CY2019Q4	us-gaap	Below Market Lease Amortization Income Year Two BelowMarketLeaseAmortizationIncomeYearTwo	7687000	USD
CY2019Q4	us-gaap	Below Market Lease Amortization Income Year Three BelowMarketLeaseAmortizationIncomeYearThree	7394000	USD
CY2019Q4	us-gaap	Below Market Lease Amortization Income Year Four BelowMarketLeaseAmortizationIncomeYearFour	7134000	USD
CY2019Q4	us-gaap	Below Market Lease Amortization Income Year Five BelowMarketLeaseAmortizationIncomeYearFive	6603000	USD
CY2019Q4	us-gaap	Below Market Lease Amortization Income After Year Five BelowMarketLeaseAmortizationIncomeAfterYearFive	81534000	USD
CY2019Q4	us-gaap	Below Market Lease Net BelowMarketLeaseNet	118587000	USD
CY2019Q4	us-gaap	Secured Debt SecuredDebt	545679000	USD
CY2018Q4	us-gaap	Secured Debt SecuredDebt	474379000	USD
CY2019Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2018Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2019Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	62000	USD
CY2018Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	365000	USD
CY2019Q4	us-gaap	Notes Payable NotesPayable	3781000	USD
CY2018Q4	us-gaap	Notes Payable NotesPayable	279027000	USD
CY2019Q4	us-gaap	Senior Notes SeniorNotes	2807134000	USD
CY2018Q4	us-gaap	Senior Notes SeniorNotes	2404279000	USD
CY2019Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	0	USD
CY2018Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	71519000	USD
CY2019Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	3356594000	USD
CY2018Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	3229204000	USD
CY2019Q3	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	1000000000.0	USD
CY2019	us-gaap	Line Of Credit Facility Maximum Amount Outstanding During Period LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod	116500000	USD
CY2018	us-gaap	Line Of Credit Facility Maximum Amount Outstanding During Period LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod	177000000.0	USD
CY2017	us-gaap	Line Of Credit Facility Maximum Amount Outstanding During Period LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod	344000000.0	USD
CY2019	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	26800000	USD
CY2018	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	83100000	USD
CY2017	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	147500000	USD
CY2019	frt	Lineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebt Fees LineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebtFees	0.032
CY2018	frt	Lineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebt Fees LineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebtFees	0.027
CY2017	frt	Lineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebt Fees LineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebtFees	0.019
CY2019Q4	frt	Lineofcreditfacilityannualfacilityfee Lineofcreditfacilityannualfacilityfee	1000000.0	USD
CY2019Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	66865000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	282199000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	370216000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	279068000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	304086000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	2067856000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	3370290000	USD
CY2019Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	1000000000.0	USD
CY2019Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2019	us-gaap	Interest Rate Cash Flow Hedge Gain Loss Reclassified To Earnings Net InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet	-100000	USD
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	3000000.0	USD
CY2018Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	3100000	USD
CY2019	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	1300000	USD
CY2018	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	1400000	USD
CY2019Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	4300000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	5800000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	5800000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	5810000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	60013000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	1013000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	81849000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	160285000	USD
CY2019Q4	frt	Financeleaseliabilityfutureminimuminterestpayments Financeleaseliabilityfutureminimuminterestpayments	88808000	USD
CY2019Q4	frt	Straightlineleaseobligation Straightlineleaseobligation	585000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	72062000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	4824000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	4832000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	4948000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	4988000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	4951000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	179896000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	204439000	USD
CY2019Q4	us-gaap	Partners Capital Account Units PartnersCapitalAccountUnits	609584	shares
CY2019Q4	frt	Operating Partnership Units Fair Value OperatingPartnershipUnitsFairValue	78500000	USD
CY2019	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	15909	shares
CY2018	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	17952	shares
CY2017	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	17911	shares
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	4.140
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	4.110
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.960
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	4.040
CY2018	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	4.020
CY2017	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	3.940
CY2019	frt	Common Stock Ordinary Dividends Per Share Cash Paid CommonStockOrdinaryDividendsPerShareCashPaid	4.110
CY2018	frt	Common Stock Ordinary Dividends Per Share Cash Paid CommonStockOrdinaryDividendsPerShareCashPaid	3.859
CY2017	frt	Common Stock Ordinary Dividends Per Share Cash Paid CommonStockOrdinaryDividendsPerShareCashPaid	3.940
CY2019	frt	Common Stock Ordinary Dividends Eligible For15 Percent Tax Rate Per Share Cash Paid CommonStockOrdinaryDividendsEligibleFor15PercentTaxRatePerShareCashPaid	0
CY2018	frt	Common Stock Ordinary Dividends Eligible For15 Percent Tax Rate Per Share Cash Paid CommonStockOrdinaryDividendsEligibleFor15PercentTaxRatePerShareCashPaid	0.161
CY2017	frt	Common Stock Ordinary Dividends Eligible For15 Percent Tax Rate Per Share Cash Paid CommonStockOrdinaryDividendsEligibleFor15PercentTaxRatePerShareCashPaid	0
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	4.110
CY2018	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	4.020
CY2017	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	3.940
CY2019Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.05
CY2019Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	104	project
CY2019Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	12	state
CY2019Q4	frt	Percent Of Annualized Base Rent Maximum PercentOfAnnualizedBaseRentMaximum	0.026
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	152.34
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Current OperatingLeasesFutureMinimumPaymentsReceivableCurrent	616760000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Two Years OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears	565835000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Three Years OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears	498438000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Four Years OperatingLeasesFutureMinimumPaymentsReceivableInFourYears	422729000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Five Years OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears	352221000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Thereafter OperatingLeasesFutureMinimumPaymentsReceivableThereafter	1528699000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Receivable OperatingLeasesFutureMinimumPaymentsReceivable	3984682000	USD
CY2019	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	73179000	USD
CY2018	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	67745000	USD
CY2017	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	67996000	USD
CY2019	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	27729000	USD
CY2018	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	27635000	USD
CY2017	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	25763000	USD
CY2019	us-gaap	Management Fee Expense ManagementFeeExpense	24930000	USD
CY2018	us-gaap	Management Fee Expense ManagementFeeExpense	24024000	USD
CY2017	us-gaap	Management Fee Expense ManagementFeeExpense	22297000	USD
CY2019	frt	Property Payroll Expense PropertyPayrollExpense	16485000	USD
CY2018	frt	Property Payroll Expense PropertyPayrollExpense	16140000	USD
CY2017	frt	Property Payroll Expense PropertyPayrollExpense	14922000	USD
CY2019	us-gaap	Real Estate Insurance RealEstateInsurance	9036000	USD
CY2018	us-gaap	Real Estate Insurance RealEstateInsurance	7547000	USD
CY2017	us-gaap	Real Estate Insurance RealEstateInsurance	7762000	USD
CY2019	us-gaap	Marketing Expense MarketingExpense	7427000	USD
CY2018	us-gaap	Marketing Expense MarketingExpense	7935000	USD
CY2017	us-gaap	Marketing Expense MarketingExpense	9007000	USD
CY2019	frt	Ground Rent Expense GroundRentExpense	4803000	USD
CY2018	frt	Ground Rent Expense GroundRentExpense	4697000	USD
CY2017	frt	Ground Rent Expense GroundRentExpense	3826000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	0	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	4708000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2591000	USD
CY2019	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	24242000	USD
CY2018	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	12663000	USD
CY2017	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	10726000	USD
CY2019	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	187831000	USD
CY2018	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	173094000	USD
CY2017	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	164890000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	13330000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	12736000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	12371000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1054000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1017000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1385000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	12276000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	11719000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	10986000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.180
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.036
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y6M
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.028
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	682	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	682	shares
CY2019	us-gaap	Profit Loss ProfitLoss	360542000	USD
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	0	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	0
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	682	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	152.34
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y1M6D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	409	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	152.34
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P6Y1M6D
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	0	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	14.42
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	4600000	USD
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	10000000.0	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	8200000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	10700000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	17100000	USD
CY2019	frt	Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition Years ShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognitionYears	P4Y10M24D
CY2019	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y4M24D
CY2018	us-gaap	Profit Loss ProfitLoss	249026000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	297870000	USD
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	8042000	USD
CY2018	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	8042000	USD
CY2017	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2458000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6676000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7119000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7956000	USD
CY2019	frt	Earnings Allocated To Unvested Shares EarningsAllocatedToUnvestedShares	1007000	USD
CY2018	frt	Earnings Allocated To Unvested Shares EarningsAllocatedToUnvestedShares	930000	USD
CY2017	frt	Earnings Allocated To Unvested Shares EarningsAllocatedToUnvestedShares	942000	USD
CY2019	frt	Net Income Available For Common Shareholders Basic And Diluted NetIncomeAvailableForCommonShareholdersBasicAndDiluted	344817000	USD
CY2018	frt	Net Income Available For Common Shareholders Basic And Diluted NetIncomeAvailableForCommonShareholdersBasicAndDiluted	232935000	USD
CY2017	frt	Net Income Available For Common Shareholders Basic And Diluted NetIncomeAvailableForCommonShareholdersBasicAndDiluted	286514000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	74766000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	73274000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	72117000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	28000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	116000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	74766000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	73302000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	72233000	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.61
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.18
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.97
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.61
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.18
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.97
CY2019Q1	us-gaap	Revenues Revenues	232227000	USD
CY2019Q2	us-gaap	Revenues Revenues	230465000	USD
CY2019Q3	us-gaap	Revenues Revenues	233947000	USD
CY2019Q4	us-gaap	Revenues Revenues	239149000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	91093000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	109579000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	94018000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	176221000	USD
CY2019Q1	us-gaap	Profit Loss ProfitLoss	61803000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	82667000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	67106000	USD
CY2019Q4	us-gaap	Profit Loss ProfitLoss	148966000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	60144000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	80902000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	65465000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	147355000	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	58134000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	78891000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	63455000	USD
CY2019Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	145344000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.78
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.05
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.84
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.92
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.78
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.05
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.84
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.92
CY2018Q1	us-gaap	Revenues Revenues	225405000	USD
CY2018Q2	us-gaap	Revenues Revenues	224902000	USD
CY2018Q3	us-gaap	Revenues Revenues	229753000	USD
CY2018Q4	us-gaap	Revenues Revenues	235376000	USD
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	89461000	USD
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	93868000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	93467000	USD
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	84840000	USD
CY2018Q1	us-gaap	Profit Loss ProfitLoss	62931000	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	65533000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	64180000	USD
CY2018Q4	us-gaap	Profit Loss ProfitLoss	56382000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	61247000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	63595000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	62558000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	54507000	USD
CY2018Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	59237000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	61584000	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	60548000	USD
CY2018Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	52496000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.81
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.84
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.82
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.71
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.81
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.84
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.82
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.71
CY2019Q4	srt	Real Estate And Accumulated Depreciation Amount Of Encumbrances RealEstateAndAccumulatedDepreciationAmountOfEncumbrances	545679000	USD
CY2019Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Land RealEstateAndAccumulatedDepreciationInitialCostOfLand	1449865000	USD
CY2019Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	2526772000	USD
CY2019Q4	us-gaap	Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Carrying Costs RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	4321495000	USD
CY2019Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Land RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	1414814000	USD
CY2019Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	6883318000	USD
CY2019Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	8298132000	USD
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	2215413000	USD
CY2016Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	6759073000	USD
CY2017	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	555476000	USD
CY2017	us-gaap	Real Estate Improvements RealEstateImprovements	492541000	USD
CY2017	frt	Real Estate Dispositions And Retirements RealEstateDispositionsAndRetirements	172029000	USD
CY2017Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	7635061000	USD
CY2018	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	14940000	USD
CY2018	us-gaap	Real Estate Improvements RealEstateImprovements	407225000	USD
CY2018	frt	Real Estate Dispositions And Retirements RealEstateDispositionsAndRetirements	237754000	USD
CY2018Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	7819472000	USD
CY2019	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	309921000	USD
CY2019	us-gaap	Real Estate Improvements RealEstateImprovements	441703000	USD
CY2019	frt	Real Estate Dispositions And Retirements RealEstateDispositionsAndRetirements	201105000	USD
CY2019Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	8298132000	USD
CY2019Q4	srt	Real Estate Federal Income Tax Basis RealEstateFederalIncomeTaxBasis	7400000000	USD
CY2016Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1729234000	USD
CY2017	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	193340000	USD
CY2017	frt	Real Estate Accumulated Depreciation Dispositions And Retirements RealEstateAccumulatedDepreciationDispositionsAndRetirements	46030000	USD
CY2017Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1876544000	USD
CY2018	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	215969000	USD
CY2018	frt	Real Estate Accumulated Depreciation Dispositions And Retirements RealEstateAccumulatedDepreciationDispositionsAndRetirements	33370000	USD
CY2018Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	2059143000	USD
CY2019	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	215382000	USD
CY2019	frt	Real Estate Accumulated Depreciation Dispositions And Retirements RealEstateAccumulatedDepreciationDispositionsAndRetirements	40939000	USD
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	2215413000	USD
CY2019Q4	srt	Mortgage Loans On Real Estate Prior Liens1 MortgageLoansOnRealEstatePriorLiens1	0	USD
CY2019Q4	srt	Mortgage Loans On Real Estate Face Amount Of Mortgages MortgageLoansOnRealEstateFaceAmountOfMortgages	30429000	USD
CY2019Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	30429000	USD
CY2019Q4	srt	Mortgage Loans On Real Estate Principal Amount Of Delinquent Loans MortgageLoansOnRealEstatePrincipalAmountOfDelinquentLoans	0	USD
CY2019Q4	srt	Mortgage Loans On Real Estate Federal Income Tax Basis1 MortgageLoansOnRealEstateFederalIncomeTaxBasis1	30400000	USD
CY2016Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	29904000	USD
CY2017	us-gaap	Mortgage Loans On Real Estate New Mortgage Loans MortgageLoansOnRealEstateNewMortgageLoans	525000	USD
CY2017Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	30429000	USD
CY2018Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	30429000	USD
CY2019Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	30429000	USD

Files In Submission

Name	View Source	Status
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0000034903-20-000008-index.html	Edgar Link	pending
0000034903-20-000008.txt	Edgar Link	pending
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chart-410667d85c0552d9968.jpg	Edgar Link	pending
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Financial_Report.xlsx	Edgar Link	pending
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frt-20191231.xsd	Edgar Link	pending
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report.css	Edgar Link	pending
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$FRT
FEDERAL REALTY INVESTMENT TRUST Stock $frt

2020 Q1 Form 10-K Financial Statement

#000003490320000008 Filed on February 10, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

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$FRT FEDERAL REALTY INVESTMENT TRUST Stock $frt

2020 Q1 Form 10-K Financial Statement

#000003490320000008 Filed on February 10, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FRT
FEDERAL REALTY INVESTMENT TRUST Stock $frt