$FRT
FEDERAL REALTY INVESTMENT TRUST Stock $frt

$frt Overview Financials Valuation SEC Filings Company Website

2015 Q4 Form 10-K Financial Statement

#000003490316000045 Filed on February 09, 2016

Income Statement

Concept	2015 Q4	2014 Q4	2014 Q3
Revenue	$192.5M	$176.4M	$170.9M
YoY Change	9.15%	7.65%	7.49%
Cost Of Revenue	$62.10M	$53.20M	$52.30M
YoY Change	16.73%	6.19%	10.34%
Gross Profit	$130.5M	$123.1M	$118.7M
YoY Change	6.01%	8.17%	6.36%
Gross Profit Margin	67.79%	69.79%	69.44%
Selling, General & Admin	$8.100M	$8.100M	$8.400M
YoY Change	0.0%	-10.99%	12.0%
% of Gross Profit	6.21%	6.58%	7.08%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$46.40M	$43.40M	$42.70M
YoY Change	6.91%	5.34%	8.38%
% of Gross Profit	35.56%	35.26%	35.97%
Operating Expenses	$54.50M	$51.60M	$103.3M
YoY Change	5.62%	2.58%	9.53%
Operating Profit	$75.91M	$71.61M	$67.62M
YoY Change	6.01%	12.82%	4.51%
Interest Expense	-$22.70M	-$23.80M	$23.42M
YoY Change	-4.62%	-0.83%	-9.08%
% of Operating Profit	-29.9%	-33.24%	34.64%
Other Income/Expense, Net
YoY Change
Pretax Income	$53.20M	$37.30M	$44.60M
YoY Change	42.63%	26.01%	13.2%
Income Tax		$0.00	$0.00
% Of Pretax Income		0.0%	0.0%
Net Earnings	$67.95M	$35.16M	$47.08M
YoY Change	93.26%	23.57%	-24.19%
Net Earnings / Revenue	35.3%	19.94%	27.54%
Basic Earnings Per Share	$0.98	$0.51	$0.69
Diluted Earnings Per Share	$0.97	$0.51	$0.69
COMMON SHARES
Basic Shares Outstanding	69.42M shares	68.13M shares	67.56M shares
Diluted Shares Outstanding			67.73M shares

Balance Sheet

Concept	2015 Q4	2014 Q4	2014 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$21.00M	$48.00M	$23.90M
YoY Change	-56.25%	-46.01%	-81.3%
Cash & Equivalents	$21.05M	$47.95M	$23.92M
Short-Term Investments
Other Short-Term Assets	$191.6M	$160.2M	$148.4M
YoY Change	19.6%	10.41%	11.75%
Inventory
Prepaid Expenses
Receivables	$110.4M	$93.30M	$104.7M
Other Receivables	$41.60M	$51.00M	$51.20M
Total Short-Term Assets	$364.6M	$352.5M	$328.2M
YoY Change	3.43%	-5.75%	-18.58%
LONG-TERM ASSETS
Property, Plant & Equipment	$4.490B	$4.142B	$4.105B
YoY Change	8.41%	9.03%	10.63%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$41.50M	$37.50M	$32.70M
YoY Change	10.67%	16.1%	-0.91%
Other Assets	$0.00
YoY Change
Total Long-Term Assets	$4.532B	$4.194B	$4.151B
YoY Change	8.05%	9.08%	10.51%
TOTAL ASSETS
Total Short-Term Assets	$364.6M	$352.5M	$328.2M
Total Long-Term Assets	$4.532B	$4.194B	$4.151B
Total Assets	$4.897B	$4.547B	$4.479B
YoY Change	7.69%	7.76%	7.69%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$146.5M	$145.7M	$160.2M
YoY Change	0.55%	-6.78%	-0.25%
Accrued Expenses
YoY Change
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	$228.3M	$220.4M	$234.1M
YoY Change	3.58%	-0.5%	4.04%
LONG-TERM LIABILITIES
Long-Term Debt	$2.627B	$2.410B	$2.365B
YoY Change	9.03%	3.78%	2.55%
Other Long-Term Liabilities	$121.8M	$105.2M	$107.9M
YoY Change	15.78%	4.89%	4.45%
Total Long-Term Liabilities	$2.749B	$2.515B	$2.473B
YoY Change	9.31%	3.83%	2.63%
TOTAL LIABILITIES
Total Short-Term Liabilities	$228.3M	$220.4M	$234.1M
Total Long-Term Liabilities	$2.749B	$2.515B	$2.473B
Total Liabilities	$2.977B	$2.735B	$2.707B
YoY Change	8.85%	3.47%	2.75%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock	$2.383B	$2.282B	$2.224B
YoY Change	4.41%	10.59%	11.13%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.664B	$1.604B	$1.573B
YoY Change
Total Liabilities & Shareholders Equity	$4.897B	$4.547B	$4.479B
YoY Change	7.69%	7.76%	7.69%

Cashflow Statement

Concept	2015 Q4	2014 Q4	2014 Q3
OPERATING ACTIVITIES
Net Income	$67.95M	$35.16M	$47.08M
YoY Change	93.26%	23.57%	-24.19%
Depreciation, Depletion And Amortization	$46.40M	$43.40M	$42.70M
YoY Change	6.91%	5.34%	8.38%
Cash From Operating Activities	$107.8M	$104.3M	$69.70M
YoY Change	3.36%	18.79%	-12.87%
INVESTING ACTIVITIES
Capital Expenditures	-$110.7M	-$95.60M	-$95.10M
YoY Change	15.79%	-32.34%	25.79%
Acquisitions
YoY Change
Other Investing Activities	$43.50M	-$19.60M	$4.400M
YoY Change	-321.94%	716.67%	-86.38%
Cash From Investing Activities	-$67.30M	-$115.3M	-$90.80M
YoY Change	-41.63%	-19.76%	109.7%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-32.40M	34.90M	3.700M
YoY Change	-192.84%	105.29%	-121.39%
NET CHANGE
Cash From Operating Activities	107.8M	104.3M	69.70M
Cash From Investing Activities	-67.30M	-115.3M	-90.80M
Cash From Financing Activities	-32.40M	34.90M	3.700M
Net Change In Cash	8.100M	23.90M	-17.40M
YoY Change	-66.11%	-161.44%	-189.69%
FREE CASH FLOW
Cash From Operating Activities	$107.8M	$104.3M	$69.70M
Capital Expenditures	-$110.7M	-$95.60M	-$95.10M
Free Cash Flow	$218.5M	$199.9M	$164.8M
YoY Change	9.3%	-12.75%	5.91%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2015	dei	Amendment Flag AmendmentFlag	false
CY2015	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2015	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2015	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2015
CY2015	dei	Document Period End Date DocumentPeriodEndDate	2015-12-31
CY2015	dei	Document Type DocumentType	10-K
CY2015	dei	Entity Central Index Key EntityCentralIndexKey	0000034903
CY2016Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	69669864	shares
CY2015	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2015	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2015Q2	dei	Entity Public Float EntityPublicFloat	8900000000	USD
CY2015	dei	Entity Registrant Name EntityRegistrantName	FEDERAL REALTY INVESTMENT TRUST
CY2015	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2015	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2015	dei	Trading Symbol TradingSymbol	FRT
CY2014Q4	frt	Accumulated Depreciation And Amortization Consolidated Variable Interest Entities AccumulatedDepreciationAndAmortizationConsolidatedVariableInterestEntities	26618000	USD
CY2015Q4	frt	Accumulated Depreciation And Amortization Consolidated Variable Interest Entities AccumulatedDepreciationAndAmortizationConsolidatedVariableInterestEntities	35782000	USD
CY2013	frt	Adjustment Depreciation And Amortization AdjustmentDepreciationAndAmortization	161099000	USD
CY2014	frt	Adjustment Depreciation And Amortization AdjustmentDepreciationAndAmortization	170814000	USD
CY2015	frt	Adjustment Depreciation And Amortization AdjustmentDepreciationAndAmortization	174796000	USD
CY2013	frt	Capital Expenditures Development Redevelopment CapitalExpendituresDevelopmentRedevelopment	243073000	USD
CY2014	frt	Capital Expenditures Development Redevelopment CapitalExpendituresDevelopmentRedevelopment	314654000	USD
CY2015	frt	Capital Expenditures Development Redevelopment CapitalExpendituresDevelopmentRedevelopment	236437000	USD
CY2013	frt	Common Stock Capital Gain Dividends Per Share Cash Paid CommonStockCapitalGainDividendsPerShareCashPaid	0.059
CY2014	frt	Common Stock Capital Gain Dividends Per Share Cash Paid CommonStockCapitalGainDividendsPerShareCashPaid	0.032
CY2015	frt	Common Stock Capital Gain Dividends Per Share Cash Paid CommonStockCapitalGainDividendsPerShareCashPaid	0.035
CY2013	frt	Common Stock Ordinary Dividends Per Share Cash Paid CommonStockOrdinaryDividendsPerShareCashPaid	2.911
CY2014	frt	Common Stock Ordinary Dividends Per Share Cash Paid CommonStockOrdinaryDividendsPerShareCashPaid	3.178
CY2015	frt	Common Stock Ordinary Dividends Per Share Cash Paid CommonStockOrdinaryDividendsPerShareCashPaid	3.515
CY2013	frt	Common Stock Ordinary Dividends Tax Rate CommonStockOrdinaryDividendsTaxRate	0.15
CY2014	frt	Common Stock Ordinary Dividends Tax Rate CommonStockOrdinaryDividendsTaxRate	0.15
CY2015	frt	Common Stock Ordinary Dividends Tax Rate CommonStockOrdinaryDividendsTaxRate	0.15
CY2013	frt	Conversion And Redemption Of Operating Partnership Units ConversionAndRedemptionOfOperatingPartnershipUnits	1422000	USD
CY2014	frt	Conversion And Redemption Of Operating Partnership Units ConversionAndRedemptionOfOperatingPartnershipUnits	63000	USD
CY2015	frt	Conversion And Redemption Of Operating Partnership Units ConversionAndRedemptionOfOperatingPartnershipUnits	151000	USD
CY2015Q4	frt	Convertible Preferred Stock Conversion Price Per Share ConvertiblePreferredStockConversionPricePerShare	104.69
CY2013	frt	Depreciation Expense Real Estate DepreciationExpenseRealEstate	147700000	USD
CY2014	frt	Depreciation Expense Real Estate DepreciationExpenseRealEstate	155700000	USD
CY2015	frt	Depreciation Expense Real Estate DepreciationExpenseRealEstate	156500000	USD
CY2013	frt	Dividends Paid To Common And Preferred Shareholders DividendsPaidToCommonAndPreferredShareholders	193016000	USD
CY2014	frt	Dividends Paid To Common And Preferred Shareholders DividendsPaidToCommonAndPreferredShareholders	215216000	USD
CY2015	frt	Dividends Paid To Common And Preferred Shareholders DividendsPaidToCommonAndPreferredShareholders	243314000	USD
CY2013	frt	Dividends Reinvested In Noncash Financing Transaction DividendsReinvestedInNoncashFinancingTransaction	1779000	USD
CY2014	frt	Dividends Reinvested In Noncash Financing Transaction DividendsReinvestedInNoncashFinancingTransaction	1855000	USD
CY2015	frt	Dividends Reinvested In Noncash Financing Transaction DividendsReinvestedInNoncashFinancingTransaction	1977000	USD
CY2013	frt	Earnings Allocated To Unvested Shares EarningsAllocatedToUnvestedShares	889000	USD
CY2014	frt	Earnings Allocated To Unvested Shares EarningsAllocatedToUnvestedShares	1003000	USD
CY2015	frt	Earnings Allocated To Unvested Shares EarningsAllocatedToUnvestedShares	797000	USD
CY2013	frt	Gain On Sale Of Real Estate Per Basic Share GainOnSaleOfRealEstatePerBasicShare	0.08
CY2014	frt	Gain On Sale Of Real Estate Per Basic Share GainOnSaleOfRealEstatePerBasicShare	0.07
CY2015	frt	Gain On Sale Of Real Estate Per Basic Share GainOnSaleOfRealEstatePerBasicShare	0.41
CY2013	frt	Gain On Sale Of Real Estate Per Diluted Share GainOnSaleOfRealEstatePerDilutedShare	0.08
CY2014	frt	Gain On Sale Of Real Estate Per Diluted Share GainOnSaleOfRealEstatePerDilutedShare	0.07
CY2015	frt	Gain On Sale Of Real Estate Per Diluted Share GainOnSaleOfRealEstatePerDilutedShare	0.41
CY2013	frt	Ground Rent Expense GroundRentExpense	1916000	USD
CY2014	frt	Ground Rent Expense GroundRentExpense	1952000	USD
CY2015	frt	Ground Rent Expense GroundRentExpense	2540000	USD
CY2013	frt	Income Loss From Continuing Operations Available For Common Shareholders IncomeLossFromContinuingOperationsAvailableForCommonShareholders	131454000	USD
CY2014	frt	Income Loss From Continuing Operations Available For Common Shareholders IncomeLossFromContinuingOperationsAvailableForCommonShareholders	158590000	USD
CY2015	frt	Income Loss From Continuing Operations Available For Common Shareholders IncomeLossFromContinuingOperationsAvailableForCommonShareholders	180551000	USD
CY2013	frt	Increase Decrease In Security Deposits And Other Liabilities IncreaseDecreaseInSecurityDepositsAndOtherLiabilities	1063000	USD
CY2014	frt	Increase Decrease In Security Deposits And Other Liabilities IncreaseDecreaseInSecurityDepositsAndOtherLiabilities	425000	USD
CY2015	frt	Increase Decrease In Security Deposits And Other Liabilities IncreaseDecreaseInSecurityDepositsAndOtherLiabilities	3729000	USD
CY2013	frt	Issuance Repayments Of Mortgage And Other Notes Receivable Net IssuanceRepaymentsOfMortgageAndOtherNotesReceivableNet	-957000	USD
CY2014	frt	Issuance Repayments Of Mortgage And Other Notes Receivable Net IssuanceRepaymentsOfMortgageAndOtherNotesReceivableNet	-5008000	USD
CY2015	frt	Issuance Repayments Of Mortgage And Other Notes Receivable Net IssuanceRepaymentsOfMortgageAndOtherNotesReceivableNet	-10333000	USD
CY2013	frt	Lineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebt Fees LineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebtFees	0.013
CY2014	frt	Lineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebt Fees LineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebtFees	0.011
CY2015	frt	Lineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebt Fees LineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebtFees	0.011
CY2015	frt	Minimum Percentage Of Taxable Income Distributed To Shareholders MinimumPercentageOfTaxableIncomeDistributedToShareholders	0.9
CY2014Q4	frt	Mortgage Payable From Consolidated Variable Interest Entities MortgagePayableFromConsolidatedVariableInterestEntities	187632000	USD
CY2015Q4	frt	Mortgage Payable From Consolidated Variable Interest Entities MortgagePayableFromConsolidatedVariableInterestEntities	254241000	USD
CY2013	frt	Net Income Available For Common Shareholders Basic And Diluted NetIncomeAvailableForCommonShareholdersBasicAndDiluted	161251000	USD
CY2014	frt	Net Income Available For Common Shareholders Basic And Diluted NetIncomeAvailableForCommonShareholdersBasicAndDiluted	162991000	USD
CY2015	frt	Net Income Available For Common Shareholders Basic And Diluted NetIncomeAvailableForCommonShareholdersBasicAndDiluted	208881000	USD
CY2015Q4	frt	Number Of Leases NumberOfLeases	2700	lease
CY2015Q4	frt	Number Of Share Based Compensation Plans NumberOfShareBasedCompensationPlans	2
CY2015	frt	Numberof Properties Exceeding Segment Reporting Threshold NumberofPropertiesExceedingSegmentReportingThreshold	0	property
CY2015Q4	frt	Operating Partnership Units Fair Value OperatingPartnershipUnitsFairValue	136500000	USD
CY2014Q4	frt	Operating Real Estate From Consolidated Variable Interest Entities OperatingRealEstateFromConsolidatedVariableInterestEntities	282303000	USD
CY2015Q4	frt	Operating Real Estate From Consolidated Variable Interest Entities OperatingRealEstateFromConsolidatedVariableInterestEntities	485971000	USD
CY2013	frt	Other Rental Income OtherRentalIncome	11192000	USD
CY2014	frt	Other Rental Income OtherRentalIncome	11860000	USD
CY2015	frt	Other Rental Income OtherRentalIncome	15169000	USD
CY2013	frt	Paymentsofdividendsandredemptionsminorityinterest Paymentsofdividendsandredemptionsminorityinterest	7118000	USD
CY2014	frt	Paymentsofdividendsandredemptionsminorityinterest Paymentsofdividendsandredemptionsminorityinterest	7812000	USD
CY2015	frt	Paymentsofdividendsandredemptionsminorityinterest Paymentsofdividendsandredemptionsminorityinterest	9626000	USD
CY2015Q4	frt	Percent Of Annualized Base Rent Maximum PercentOfAnnualizedBaseRentMaximum	0.029
CY2013	frt	Preferred Stock Capital Gain Dividends Per Share Cash Paid PreferredStockCapitalGainDividendsPerShareCashPaid	0.027
CY2014	frt	Preferred Stock Capital Gain Dividends Per Share Cash Paid PreferredStockCapitalGainDividendsPerShareCashPaid	0.014
CY2015	frt	Preferred Stock Capital Gain Dividends Per Share Cash Paid PreferredStockCapitalGainDividendsPerShareCashPaid	0.014
CY2013	frt	Preferred Stock Ordinary Dividends Per Share Cash Paid PreferredStockOrdinaryDividendsPerShareCashPaid	1.327
CY2014	frt	Preferred Stock Ordinary Dividends Per Share Cash Paid PreferredStockOrdinaryDividendsPerShareCashPaid	1.340
CY2015	frt	Preferred Stock Ordinary Dividends Per Share Cash Paid PreferredStockOrdinaryDividendsPerShareCashPaid	1.340
CY2013	frt	Preferred Stock Ordinary Dividends Tax Rate PreferredStockOrdinaryDividendsTaxRate	0.15
CY2014	frt	Preferred Stock Ordinary Dividends Tax Rate PreferredStockOrdinaryDividendsTaxRate	0.15
CY2015	frt	Preferred Stock Ordinary Dividends Tax Rate PreferredStockOrdinaryDividendsTaxRate	0.15
CY2013	frt	Proceeds From Repayments Of Credit Facility ProceedsFromRepaymentsOfCreditFacility	-1929000	USD
CY2014	frt	Proceeds From Repayments Of Credit Facility ProceedsFromRepaymentsOfCreditFacility	0	USD
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CY2013	frt	Profit Loss Excluding Redeemable Noncontrolling Interests ProfitLossExcludingRedeemableNoncontrollingInterests	164721000	USD
CY2014	frt	Profit Loss Excluding Redeemable Noncontrolling Interests ProfitLossExcludingRedeemableNoncontrollingInterests	168837000	USD
CY2015	frt	Profit Loss Excluding Redeemable Noncontrolling Interests ProfitLossExcludingRedeemableNoncontrollingInterests	215001000	USD
CY2013	frt	Property Payroll Expense PropertyPayrollExpense	9237000	USD
CY2014	frt	Property Payroll Expense PropertyPayrollExpense	11554000	USD
CY2015	frt	Property Payroll Expense PropertyPayrollExpense	12673000	USD
CY2013	frt	Real Estate Accumulated Depreciation Dispositions And Retirements RealEstateAccumulatedDepreciationDispositionsAndRetirements	21554000	USD
CY2014	frt	Real Estate Accumulated Depreciation Dispositions And Retirements RealEstateAccumulatedDepreciationDispositionsAndRetirements	39083000	USD
CY2015	frt	Real Estate Accumulated Depreciation Dispositions And Retirements RealEstateAccumulatedDepreciationDispositionsAndRetirements	49522000	USD
CY2013	frt	Real Estate Dispositions And Retirements RealEstateDispositionsAndRetirements	36092000	USD
CY2014	frt	Real Estate Dispositions And Retirements RealEstateDispositionsAndRetirements	44467000	USD
CY2015	frt	Real Estate Dispositions And Retirements RealEstateDispositionsAndRetirements	117789000	USD
CY2014	frt	Redeemable Noncontrolling Interests Contributions RedeemableNoncontrollingInterestsContributions	5858000	USD
CY2015	frt	Redeemable Noncontrolling Interests Contributions RedeemableNoncontrollingInterestsContributions	12000	USD
CY2014	frt	Redeemable Noncontrolling Interests Distributions RedeemableNoncontrollingInterestsDistributions	3714000	USD
CY2015	frt	Redeemable Noncontrolling Interests Distributions RedeemableNoncontrollingInterestsDistributions	4286000	USD
CY2013	frt	Refinanceofmortgageloan Refinanceofmortgageloan	0	USD
CY2014	frt	Refinanceofmortgageloan Refinanceofmortgageloan	64205000	USD
CY2015	frt	Refinanceofmortgageloan Refinanceofmortgageloan	0	USD
CY2013	frt	Rental Income RentalIncome	620089000	USD
CY2014	frt	Rental Income RentalIncome	666322000	USD
CY2015	frt	Rental Income RentalIncome	727812000	USD
CY2013	frt	Repaymentof Note Payablewith Public Funding RepaymentofNotePayablewithPublicFunding	0	USD
CY2014	frt	Repaymentof Note Payablewith Public Funding RepaymentofNotePayablewithPublicFunding	10000000	USD
CY2015	frt	Repaymentof Note Payablewith Public Funding RepaymentofNotePayablewithPublicFunding	0	USD
CY2015	frt	Residual Profit Maximum ResidualProfitMaximum	0.5
CY2013	frt	Revenue Mortgage Interest RevenueMortgageInterest	5155000	USD
CY2014	frt	Revenue Mortgage Interest RevenueMortgageInterest	5010000	USD
CY2015	frt	Revenue Mortgage Interest RevenueMortgageInterest	4390000	USD
CY2013	frt	Share Based Compensation Expense Net Value ShareBasedCompensationExpenseNetValue	11199000	USD
CY2014	frt	Share Based Compensation Expense Net Value ShareBasedCompensationExpenseNetValue	12941000	USD
CY2015	frt	Share Based Compensation Expense Net Value ShareBasedCompensationExpenseNetValue	12074000	USD
CY2015	frt	Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition Years ShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognitionYears	P8Y5M
CY2015	frt	Straight Line Rents Collection Of Accounts Receivable Period StraightLineRentsCollectionOfAccountsReceivablePeriod	P1Y
CY2013	frt	Valueofdown Reit Operating Partnership Units Issuedin Connectionwith Business Acquisition ValueofdownREITOperatingPartnershipUnitsIssuedinConnectionwithBusinessAcquisition	0	USD
CY2014	frt	Valueofdown Reit Operating Partnership Units Issuedin Connectionwith Business Acquisition ValueofdownREITOperatingPartnershipUnitsIssuedinConnectionwithBusinessAcquisition	65348000	USD
CY2015	frt	Valueofdown Reit Operating Partnership Units Issuedin Connectionwith Business Acquisition ValueofdownREITOperatingPartnershipUnitsIssuedinConnectionwithBusinessAcquisition	7742000	USD
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CY2014Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	145685000	USD
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CY2014Q4	us-gaap	Accumulated Amortization Deferred Finance Costs AccumulatedAmortizationDeferredFinanceCosts	11441000	USD
CY2015Q4	us-gaap	Accumulated Amortization Deferred Finance Costs AccumulatedAmortizationDeferredFinanceCosts	11092000	USD
CY2014Q4	us-gaap	Accumulated Distributions In Excess Of Net Income AccumulatedDistributionsInExcessOfNetIncome	683991000	USD
CY2015Q4	us-gaap	Accumulated Distributions In Excess Of Net Income AccumulatedDistributionsInExcessOfNetIncome	724701000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-3515000	USD
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-4110000	USD
CY2014Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2281223000	USD
CY2015Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2381867000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11199000	USD
CY2014	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	12941000	USD
CY2015	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	12074000	USD
CY2014Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	12400000	USD
CY2015Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	11700000	USD
CY2013	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	3100000	USD
CY2014	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	2400000	USD
CY2015	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	2700000	USD
CY2013	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	5900000	USD
CY2014	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	5800000	USD
CY2015	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	7100000	USD
CY2013	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2014	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2015	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2014Q4	us-gaap	Assets Assets	4546870000	USD
CY2014Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	68605783	shares
CY2015Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	69493392	shares
CY2014Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	68605783	shares
CY2015Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	69493392	shares
CY2015Q4	us-gaap	Assets Assets	4911709000	USD
CY2014Q4	us-gaap	Below Market Lease Accumulated Amortization BelowMarketLeaseAccumulatedAmortization	37000000	USD
CY2015Q4	us-gaap	Below Market Lease Accumulated Amortization BelowMarketLeaseAccumulatedAmortization	40700000	USD
CY2015Q4	us-gaap	Below Market Lease Amortization Income After Year Five BelowMarketLeaseAmortizationIncomeAfterYearFive	61678000	USD
CY2015Q4	us-gaap	Below Market Lease Amortization Income Next Twelve Months BelowMarketLeaseAmortizationIncomeNextTwelveMonths	8080000	USD
CY2015Q4	us-gaap	Below Market Lease Amortization Income Year Five BelowMarketLeaseAmortizationIncomeYearFive	4602000	USD
CY2015Q4	us-gaap	Below Market Lease Amortization Income Year Four BelowMarketLeaseAmortizationIncomeYearFour	5469000	USD
CY2015Q4	us-gaap	Below Market Lease Amortization Income Year Three BelowMarketLeaseAmortizationIncomeYearThree	5849000	USD
CY2015Q4	us-gaap	Below Market Lease Amortization Income Year Two BelowMarketLeaseAmortizationIncomeYearTwo	7036000	USD
CY2014Q4	us-gaap	Below Market Lease Gross BelowMarketLeaseGross	109800000	USD
CY2015Q4	us-gaap	Below Market Lease Gross BelowMarketLeaseGross	133400000	USD
CY2015Q4	us-gaap	Below Market Lease Net BelowMarketLeaseNet	92714000	USD
CY2014Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	71647000	USD
CY2015Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	71620000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	183395000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	5788000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	5800000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	5800000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	5800000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	5797000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	154410000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	111775000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	71620000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	36988000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	88927000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	47951000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	21046000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	51939000	USD
CY2014	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-40976000	USD
CY2015	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-26905000	USD
CY2015Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	18100000	USD
CY2014Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2015Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2013	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	2.970
CY2014	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	3.210
CY2015	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	3.550
CY2015Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.94
CY2013	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.020
CY2014	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.300
CY2015	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.620
CY2014Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2015Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2014Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2015Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2014Q4	us-gaap	Common Stock Value CommonStockValue	687000	USD
CY2015Q4	us-gaap	Common Stock Value CommonStockValue	696000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	173652000	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	162437000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	209624000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	4927000	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	7754000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	8205000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	178579000	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	170191000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	217829000	USD
CY2014Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	480241000	USD
CY2015Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	433635000	USD
CY2013	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	46600000	USD
CY2014	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	55444000	USD
CY2015	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	62420000	USD
CY2014Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	2409677000	USD
CY2015Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	2642366000	USD
CY2014Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	105164000	USD
CY2015Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	121787000	USD
CY2014Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	15068000	USD
CY2015Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	16529000	USD
CY2014Q4	us-gaap	Deferred Rent Receivables Net DeferredRentReceivablesNet	66100000	USD
CY2015Q4	us-gaap	Deferred Rent Receivables Net DeferredRentReceivablesNet	72700000	USD
CY2013	us-gaap	Depreciation And Amortization DepreciationAndAmortization	160828000	USD
CY2014	us-gaap	Depreciation And Amortization DepreciationAndAmortization	170814000	USD
CY2015	us-gaap	Depreciation And Amortization DepreciationAndAmortization	174796000	USD
CY2013	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	118695000	USD
CY2014	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	135417000	USD
CY2015	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	147593000	USD
CY2013	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	23861000	USD
CY2014	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	0	USD
CY2015	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	0	USD
CY2013	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	942000	USD
CY2014	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	0	USD
CY2015	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	0	USD
CY2013	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	1500000	USD
CY2013	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	198965000	USD
CY2014	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	224190000	USD
CY2015	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	250388000	USD
CY2014Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	60620000	USD
CY2015Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	66338000	USD
CY2013	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	541000	USD
CY2014	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	541000	USD
CY2015	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	541000	USD
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.47
CY2014Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.58
CY2014Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.64
CY2014Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.69
CY2014Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.51
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.42
CY2015Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.67
CY2015Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.63
CY2015Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.75
CY2015Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.98
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.04
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.46
CY2014Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.57
CY2014Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.64
CY2014Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.69
CY2014Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.51
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.41
CY2015Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.67
CY2015Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.63
CY2015Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.75
CY2015Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.97
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.03
CY2013	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1024000	USD
CY2014	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1188000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	868000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	1000000	USD
CY2014	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	2300000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	2000000	USD
CY2015Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	11800000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y0M
CY2015	us-gaap	Factors Used To Identify Entitys Reportable Segments FactorsUsedToIdentifyEntitysReportableSegments	10% of our revenues or property operating income
CY2013	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	28855000	USD
CY2014	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	4401000	USD
CY2015	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	28330000	USD
CY2013	us-gaap	Gain Loss On Sale Of Properties Net Of Applicable Income Taxes GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes	4994000	USD
CY2014	us-gaap	Gain Loss On Sale Of Properties Net Of Applicable Income Taxes GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes	4401000	USD
CY2015	us-gaap	Gain Loss On Sale Of Properties Net Of Applicable Income Taxes GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes	28330000	USD
CY2013	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-13304000	USD
CY2014	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-10545000	USD
CY2015	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-19072000	USD
CY2013	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	31970000	USD
CY2014	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	32316000	USD
CY2015	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	35645000	USD
CY2013	us-gaap	Income Loss Before Gain Or Loss On Sale Of Properties Extraordinary Items And Cumulative Effects Of Accounting Changes IncomeLossBeforeGainOrLossOnSaleOfPropertiesExtraordinaryItemsAndCumulativeEffectsOfAccountingChanges	162614000	USD
CY2014	us-gaap	Income Loss Before Gain Or Loss On Sale Of Properties Extraordinary Items And Cumulative Effects Of Accounting Changes IncomeLossBeforeGainOrLossOnSaleOfPropertiesExtraordinaryItemsAndCumulativeEffectsOfAccountingChanges	167888000	USD
CY2015	us-gaap	Income Loss Before Gain Or Loss On Sale Of Properties Extraordinary Items And Cumulative Effects Of Accounting Changes IncomeLossBeforeGainOrLossOnSaleOfPropertiesExtraordinaryItemsAndCumulativeEffectsOfAccountingChanges	190094000	USD
CY2013	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	132884000	USD
CY2014	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	160134000	USD
CY2015	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	181889000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	4927000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	7754000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	8205000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	137811000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	167888000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	190094000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.01
CY2014	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.35
CY2015	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.63
CY2013	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.00
CY2014	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.34
CY2015	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.62
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	24803000	USD
CY2014	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	24803000	USD
CY2014	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.38
CY2014	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.38
CY2014	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2013	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1498000	USD
CY2014	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1243000	USD
CY2015	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1416000	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	410000	USD
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	278000	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	274000	USD
CY2013	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	6321000	USD
CY2014	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	3063000	USD
CY2015	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	9200000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	5325000	USD
CY2014	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	4253000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-9995000	USD
CY2013	us-gaap	Increase Decrease In Lease Acquisition Costs IncreaseDecreaseInLeaseAcquisitionCosts	12393000	USD
CY2014	us-gaap	Increase Decrease In Lease Acquisition Costs IncreaseDecreaseInLeaseAcquisitionCosts	35286000	USD
CY2015	us-gaap	Increase Decrease In Lease Acquisition Costs IncreaseDecreaseInLeaseAcquisitionCosts	22382000	USD
CY2013	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-69000	USD
CY2014	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	4222000	USD
CY2015	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	7422000	USD
CY2013	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	300000	shares
CY2014	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	300000	shares
CY2015	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	200000	shares
CY2013	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	152000	shares
CY2014	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	170000	shares
CY2015	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	184000	shares
CY2013	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	16181000	USD
CY2014	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	20971000	USD
CY2015	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	18122000	USD
CY2013	us-gaap	Interest Costs Incurred InterestCostsIncurred	121158000	USD
CY2014	us-gaap	Interest Costs Incurred InterestCostsIncurred	114912000	USD
CY2015	us-gaap	Interest Costs Incurred InterestCostsIncurred	110675000	USD
CY2013	us-gaap	Interest Expense InterestExpense	104977000	USD
CY2014	us-gaap	Interest Expense InterestExpense	93941000	USD
CY2015	us-gaap	Interest Expense InterestExpense	92553000	USD
CY2013	us-gaap	Interest Income Other InterestIncomeOther	433000	USD
CY2014	us-gaap	Interest Income Other InterestIncomeOther	94000	USD
CY2015	us-gaap	Interest Income Other InterestIncomeOther	149000	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	120934000	USD
CY2014	us-gaap	Interest Paid Net InterestPaidNet	100011000	USD
CY2015	us-gaap	Interest Paid Net InterestPaidNet	116335000	USD
CY2014	us-gaap	Interest Rate Cash Flow Hedge Gain Loss Reclassified To Earnings Net InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet	-4300000	USD
CY2015	us-gaap	Interest Rate Cash Flow Hedge Gain Loss Reclassified To Earnings Net InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet	-4300000	USD
CY2015Q4	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	-2900000	USD
CY2014Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	37457000	USD
CY2015Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	41546000	USD
CY2015Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	13000000	USD
CY2014Q4	us-gaap	Liabilities Liabilities	2735261000	USD
CY2015Q4	us-gaap	Liabilities Liabilities	2992462000	USD
CY2014Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4546870000	USD
CY2015Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4911709000	USD
CY2013	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	10500000	USD
CY2014	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	12500000	USD
CY2015	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	109700000	USD
CY2015	us-gaap	Line Of Credit Facility Commitment Fee Amount LineOfCreditFacilityCommitmentFeeAmount	900000	USD
CY2013	us-gaap	Line Of Credit Facility Maximum Amount Outstanding During Period LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod	76000000	USD
CY2014	us-gaap	Line Of Credit Facility Maximum Amount Outstanding During Period LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod	79500000	USD
CY2015	us-gaap	Line Of Credit Facility Maximum Amount Outstanding During Period LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod	324000000	USD
CY2015Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	600000000	USD
CY2015Q4	us-gaap	Long Term Debt LongTermDebt	2559794000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1736030000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	15477000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	215310000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	25567000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	290984000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	276426000	USD
CY2013	us-gaap	Marketing Expense MarketingExpense	8664000	USD
CY2014	us-gaap	Marketing Expense MarketingExpense	9532000	USD
CY2015	us-gaap	Marketing Expense MarketingExpense	9046000	USD
CY2014Q4	us-gaap	Minority Interest MinorityInterest	88155000	USD
CY2015Q4	us-gaap	Minority Interest MinorityInterest	118182000	USD
CY2013	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	1887000	USD
CY2014	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	4620000	USD
CY2015	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	5269000	USD
CY2012Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	55648000	USD
CY2013Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	55155000	USD
CY2014Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	50988000	USD
CY2015Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	41618000	USD
CY2013	us-gaap	Mortgage Loans On Real Estate Amortization Of Premium MortgageLoansOnRealEstateAmortizationOfPremium	564000	USD
CY2014	us-gaap	Mortgage Loans On Real Estate Amortization Of Premium MortgageLoansOnRealEstateAmortizationOfPremium	611000	USD
CY2015	us-gaap	Mortgage Loans On Real Estate Amortization Of Premium MortgageLoansOnRealEstateAmortizationOfPremium	954000	USD
CY2014Q4	us-gaap	Mortgage Loans On Real Estate Carrying Amount Of Mortgages MortgageLoansOnRealEstateCarryingAmountOfMortgages	51000000	USD
CY2015Q4	us-gaap	Mortgage Loans On Real Estate Carrying Amount Of Mortgages MortgageLoansOnRealEstateCarryingAmountOfMortgages	41618000	USD
CY2013	us-gaap	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	1057000	USD
CY2014	us-gaap	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	4778000	USD
CY2015	us-gaap	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	10692000	USD
CY2014Q4	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	50988000	USD
CY2015Q4	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	41618000	USD
CY2015Q4	us-gaap	Mortgage Loans On Real Estate Face Amount Of Mortgages MortgageLoansOnRealEstateFaceAmountOfMortgages	41618000	USD
CY2015Q4	us-gaap	Mortgage Loans On Real Estate Federal Income Tax Basis1 MortgageLoansOnRealEstateFederalIncomeTaxBasis1	41600000	USD
CY2014	us-gaap	Mortgage Loans On Real Estate Interest Rate MortgageLoansOnRealEstateInterestRate	0.090
CY2015	us-gaap	Mortgage Loans On Real Estate Interest Rate MortgageLoansOnRealEstateInterestRate	0.090
CY2015	us-gaap	Mortgage Loans On Real Estate New Mortgage Loans MortgageLoansOnRealEstateNewMortgageLoans	368000	USD
CY2014	us-gaap	Mortgage Loans On Real Estate Number Of Loans MortgageLoansOnRealEstateNumberOfLoans	4	loan
CY2015	us-gaap	Mortgage Loans On Real Estate Number Of Loans MortgageLoansOnRealEstateNumberOfLoans	3	loan
CY2015Q4	us-gaap	Mortgage Loans On Real Estate Principal Amount Of Delinquent Loans MortgageLoansOnRealEstatePrincipalAmountOfDelinquentLoans	11715000	USD
CY2015Q4	us-gaap	Mortgage Loans On Real Estate Prior Liens1 MortgageLoansOnRealEstatePriorLiens1	0	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	82639000	USD
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	9044000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-32977000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-345198000	USD
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-396150000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-353763000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	314498000	USD
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	346130000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	359835000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	162681000	USD
CY2014Q1	us-gaap	Net Income Loss NetIncomeLoss	38753000	USD
CY2014Q2	us-gaap	Net Income Loss NetIncomeLoss	43545000	USD
CY2014Q3	us-gaap	Net Income Loss NetIncomeLoss	47075000	USD
CY2014Q4	us-gaap	Net Income Loss NetIncomeLoss	35162000	USD
CY2014	us-gaap	Net Income Loss NetIncomeLoss	164535000	USD
CY2015Q1	us-gaap	Net Income Loss NetIncomeLoss	46186000	USD
CY2015Q2	us-gaap	Net Income Loss NetIncomeLoss	43632000	USD
CY2015Q3	us-gaap	Net Income Loss NetIncomeLoss	52447000	USD
CY2015Q4	us-gaap	Net Income Loss NetIncomeLoss	67954000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	210219000	USD
CY2013	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4927000	USD
CY2014	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7754000	USD
CY2015	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	8205000	USD
CY2013	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	2887000	USD
CY2014	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	3452000	USD
CY2015	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	3423000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	162140000	USD
CY2014Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	38618000	USD
CY2014Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	43410000	USD
CY2014Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	46939000	USD
CY2014Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	35027000	USD
CY2014	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	163994000	USD
CY2015Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	46051000	USD
CY2015Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	43497000	USD
CY2015Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	52311000	USD
CY2015Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	67819000	USD
CY2015	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	209678000	USD
CY2013	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2014	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	68282000	USD
CY2015	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	89516000	USD
CY2014	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	65350000	USD
CY2015	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	34737000	USD
CY2014Q4	us-gaap	Notes Payable NotesPayable	290519000	USD
CY2015Q4	us-gaap	Notes Payable NotesPayable	343600000	USD
CY2015Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	90	project
CY2015	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1
CY2015Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	12	state
CY2013	us-gaap	Operating Expenses OperatingExpenses	383252000	USD
CY2014	us-gaap	Operating Expenses OperatingExpenses	415053000	USD
CY2015	us-gaap	Operating Expenses OperatingExpenses	443858000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	254161000	USD
CY2014Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	63444000	USD
CY2014Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	68361000	USD
CY2014Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	67622000	USD
CY2014Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	71610000	USD
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	271037000	USD
CY2015Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	72122000	USD
CY2015Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	76201000	USD
CY2015Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	75917000	USD
CY2015Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	75914000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	300154000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	171649000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	2750000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	3001000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	2988000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	2801000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	2785000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	157324000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Receivable OperatingLeasesFutureMinimumPaymentsReceivable	3791481000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Current OperatingLeasesFutureMinimumPaymentsReceivableCurrent	518325000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Five Years OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears	288395000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Four Years OperatingLeasesFutureMinimumPaymentsReceivableInFourYears	348429000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Three Years OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears	406311000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Two Years OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears	470881000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Thereafter OperatingLeasesFutureMinimumPaymentsReceivableThereafter	1759140000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	10971000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2098000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-595000	USD
CY2013	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	9556000	USD
CY2014	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	10537000	USD
CY2015	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	10229000	USD
CY2013	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-2704000	USD
CY2014	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-733000	USD
CY2015	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-177000	USD
CY2013	us-gaap	Other Real Estate Revenue OtherRealEstateRevenue	12169000	USD
CY2014	us-gaap	Other Real Estate Revenue OtherRealEstateRevenue	14758000	USD
CY2015	us-gaap	Other Real Estate Revenue OtherRealEstateRevenue	11810000	USD
CY2015Q4	us-gaap	Partners Capital Account Units PartnersCapitalAccountUnits	934405	shares
CY2013	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	47069000	USD
CY2014	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	46304000	USD
CY2015	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	46096000	USD
CY2013	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	0	USD
CY2014	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	6731000	USD
CY2015	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	2802000	USD
CY2013	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	87276000	USD
CY2014	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	9154000	USD
CY2015	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	154313000	USD
CY2013	us-gaap	Percentage Rent PercentageRent	9359000	USD
CY2014	us-gaap	Percentage Rent PercentageRent	10169000	USD
CY2015	us-gaap	Percentage Rent PercentageRent	11911000	USD
CY2013	us-gaap	Preferred Stock Dividend Rate Percentage PreferredStockDividendRatePercentage	0.05417
CY2014	us-gaap	Preferred Stock Dividend Rate Percentage PreferredStockDividendRatePercentage	0.05417
CY2015	us-gaap	Preferred Stock Dividend Rate Percentage PreferredStockDividendRatePercentage	0.05417
CY2013	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	541000	USD
CY2014	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	541000	USD
CY2015	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	541000	USD
CY2013	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	1.354
CY2013Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	25
CY2014	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	1.354
CY2015	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	1.354
CY2013	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	1.354
CY2014	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	1.354
CY2015	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	1.354
CY2014Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	25
CY2015Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	25
CY2013Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2014Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2015Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2014Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	15000000	shares
CY2015Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	15000000	shares
CY2014Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	399896	shares
CY2015Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	399896	shares
CY2013Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	399896	shares
CY2014Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	399896	shares
CY2015Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	399896	shares
CY2014Q4	us-gaap	Preferred Stock Value PreferredStockValue	9997000	USD
CY2015Q4	us-gaap	Preferred Stock Value PreferredStockValue	9997000	USD
CY2014Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	160167000	USD
CY2015Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	190203000	USD
CY2013	us-gaap	Proceeds From Distributions Received From Real Estate Partnerships ProceedsFromDistributionsReceivedFromRealEstatePartnerships	790000	USD
CY2014	us-gaap	Proceeds From Distributions Received From Real Estate Partnerships ProceedsFromDistributionsReceivedFromRealEstatePartnerships	565000	USD
CY2015	us-gaap	Proceeds From Distributions Received From Real Estate Partnerships ProceedsFromDistributionsReceivedFromRealEstatePartnerships	512000	USD
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	186548000	USD
CY2014	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	216155000	USD
CY2015	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	110855000	USD
CY2013	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	860000	USD
CY2014	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	0	USD
CY2015	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	0	USD
CY2013	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	564389000	USD
CY2014	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	244579000	USD
CY2015	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	456151000	USD
CY2013	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	42866000	USD
CY2014	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	10406000	USD
CY2015	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	97422000	USD
CY2014Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	7200000	USD
CY2015Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	7700000	USD
CY2014	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	1400000	USD
CY2015	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	1800000	USD
CY2013	us-gaap	Profit Loss ProfitLoss	167608000	USD
CY2014Q1	us-gaap	Profit Loss ProfitLoss	40545000	USD
CY2014Q2	us-gaap	Profit Loss ProfitLoss	45416000	USD
CY2014Q3	us-gaap	Profit Loss ProfitLoss	49049000	USD
CY2014Q4	us-gaap	Profit Loss ProfitLoss	37279000	USD
CY2014	us-gaap	Profit Loss ProfitLoss	172289000	USD
CY2015Q1	us-gaap	Profit Loss ProfitLoss	48203000	USD
CY2015Q2	us-gaap	Profit Loss ProfitLoss	45673000	USD
CY2015Q3	us-gaap	Profit Loss ProfitLoss	54550000	USD
CY2015Q4	us-gaap	Profit Loss ProfitLoss	69998000	USD
CY2015	us-gaap	Profit Loss ProfitLoss	218424000	USD
CY2013	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	442000	USD
CY2014	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2021000	USD
CY2015	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1168000	USD
CY2012Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1224295000	USD
CY2013Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1350471000	USD
CY2014Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1467050000	USD
CY2015Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1574041000	USD
CY2014Q4	us-gaap	Real Estate And Accumulated Depreciation Amount Of Encumbrances RealEstateAndAccumulatedDepreciationAmountOfEncumbrances	635345000	USD
CY2015Q4	us-gaap	Real Estate And Accumulated Depreciation Amount Of Encumbrances RealEstateAndAccumulatedDepreciationAmountOfEncumbrances	554442000	USD
CY2015Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	4854602000	USD
CY2015Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Land RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	1209804000	USD
CY2015Q4	us-gaap	Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Carrying Costs RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	2930849000	USD
CY2015Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	1910686000	USD
CY2015Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Land RealEstateAndAccumulatedDepreciationInitialCostOfLand	1222871000	USD
CY2015Q4	us-gaap	Real Estate Federal Income Tax Basis RealEstateFederalIncomeTaxBasis	5300000000	USD
CY2012Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	4779674000	USD
CY2013Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	5149463000	USD
CY2014Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	5608998000	USD
CY2015Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	6064406000	USD
CY2013	us-gaap	Real Estate Improvements RealEstateImprovements	329522000	USD
CY2014	us-gaap	Real Estate Improvements RealEstateImprovements	329674000	USD
CY2015	us-gaap	Real Estate Improvements RealEstateImprovements	281471000	USD
CY2013	us-gaap	Real Estate Insurance RealEstateInsurance	6811000	USD
CY2014	us-gaap	Real Estate Insurance RealEstateInsurance	6462000	USD
CY2015	us-gaap	Real Estate Insurance RealEstateInsurance	7875000	USD
CY2014Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	1467050000	USD
CY2015Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	1574041000	USD
CY2014Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	5608998000	USD
CY2015Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	6064406000	USD
CY2014Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	4141948000	USD
CY2015Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	4490365000	USD
CY2013	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	76359000	USD
CY2014	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	174328000	USD
CY2015	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	291726000	USD
CY2013	us-gaap	Real Estate Tax Expense RealEstateTaxExpense	71759000	USD
CY2014	us-gaap	Real Estate Tax Expense RealEstateTaxExpense	76506000	USD
CY2015	us-gaap	Real Estate Tax Expense RealEstateTaxExpense	85824000	USD
CY2013Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	104425000	USD
CY2014Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	119053000	USD
CY2015Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	137316000	USD
CY2014Q4	us-gaap	Rental Properties RentalProperties	5128757000	USD
CY2015Q4	us-gaap	Rental Properties RentalProperties	5630771000	USD
CY2013	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	173735000	USD
CY2014	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	94422000	USD
CY2015	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	181315000	USD
CY2013	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	293360000	USD
CY2014	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	134240000	USD
CY2015	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	219228000	USD
CY2013	us-gaap	Revenues Revenues	637413000	USD
CY2014Q1	us-gaap	Revenues Revenues	170828000	USD
CY2014Q2	us-gaap	Revenues Revenues	167947000	USD
CY2014Q3	us-gaap	Revenues Revenues	170938000	USD
CY2014Q4	us-gaap	Revenues Revenues	176377000	USD
CY2014	us-gaap	Revenues Revenues	686090000	USD
CY2015Q1	us-gaap	Revenues Revenues	184792000	USD
CY2015Q2	us-gaap	Revenues Revenues	181461000	USD
CY2015Q3	us-gaap	Revenues Revenues	185252000	USD
CY2015Q4	us-gaap	Revenues Revenues	192507000	USD
CY2015	us-gaap	Revenues Revenues	744012000	USD
CY2013	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	147730000	USD
CY2014	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	155662000	USD
CY2015	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	156513000	USD
CY2014Q4	us-gaap	Secured Debt SecuredDebt	563698000	USD
CY2015Q4	us-gaap	Secured Debt SecuredDebt	482822000	USD
CY2014Q4	us-gaap	Security Deposit Liability SecurityDepositLiability	14115000	USD
CY2015Q4	us-gaap	Security Deposit Liability SecurityDepositLiability	15439000	USD
CY2014Q4	us-gaap	Senior Notes SeniorNotes	1483813000	USD
CY2015Q4	us-gaap	Senior Notes SeniorNotes	1744324000	USD
CY2013	us-gaap	Service Management Costs ServiceManagementCosts	16250000	USD
CY2014	us-gaap	Service Management Costs ServiceManagementCosts	17416000	USD
CY2015	us-gaap	Service Management Costs ServiceManagementCosts	18639000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	10175000	USD
CY2014	us-gaap	Share Based Compensation ShareBasedCompensation	11753000	USD
CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	11206000	USD
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	313802	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	60.93
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	700000	USD
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	1100000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	2100000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	0	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	0.00
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	26726000	USD
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	343742	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	313802	shares
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	61.55
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	60.93
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	68.04
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0.00
CY2015Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	26726000	USD
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P2Y6M
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y6M
CY2013	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	20026	shares
CY2014	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	18705	shares
CY2015	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	16524	shares
CY2015	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	29940	shares
CY2013	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2130000	USD
CY2014	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2168000	USD
CY2015	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2296000	USD
CY2013	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	185182000	USD
CY2014	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	213580000	USD
CY2015	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	108545000	USD
CY2013	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1015000	USD
CY2014	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2262000	USD
CY2015	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1991000	USD
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	1604401000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	1663749000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1310593000	USD
CY2013Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1471297000	USD
CY2014Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1692556000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1781931000	USD
CY2013	us-gaap	Stockholders Equity Other StockholdersEquityOther	9857000	USD
CY2014	us-gaap	Stockholders Equity Other StockholdersEquityOther	9032000	USD
CY2015	us-gaap	Stockholders Equity Other StockholdersEquityOther	19114000	USD
CY2013	us-gaap	Straight Line Rent StraightLineRent	5400000	USD
CY2014	us-gaap	Straight Line Rent StraightLineRent	5100000	USD
CY2015	us-gaap	Straight Line Rent StraightLineRent	7600000	USD
CY2014	us-gaap	Temporary Equity Other Changes TemporaryEquityOtherChanges	9032000	USD
CY2015	us-gaap	Temporary Equity Other Changes TemporaryEquityOtherChanges	19114000	USD
CY2013	us-gaap	Tenant Reimbursements TenantReimbursements	122578000	USD
CY2014	us-gaap	Tenant Reimbursements TenantReimbursements	135592000	USD
CY2015	us-gaap	Tenant Reimbursements TenantReimbursements	148110000	USD
CY2013	us-gaap	Utilities Costs UtilitiesCosts	19219000	USD
CY2014	us-gaap	Utilities Costs UtilitiesCosts	20499000	USD
CY2015	us-gaap	Utilities Costs UtilitiesCosts	23003000	USD
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65483000	shares
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	67492000	shares
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	68981000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	65331000	shares
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	67322000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	68797000	shares
CY2015	frt	Schedule Of Minimum Rents Components Table Textblock ScheduleOfMinimumRentsComponentsTableTextblock	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Minimum rents include the following:</font></div><div style="line-height:120%;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="12" rowspan="1"></td></tr><tr><td width="62%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="10%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="10%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="10%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"> </font></div></td><td colspan="11" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Year Ended December 31,</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">2015</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">2014</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">2013</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"> </font></div></td><td colspan="11" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">(In millions)</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Straight-line rents</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">7.6</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">5.1</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">5.4</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Net amortization of above and below market leases</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2.7</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2.4</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">3.1</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr></table></div></div></div>
CY2015	us-gaap	Nature Of Operations NatureOfOperations	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">BUSINESS AND ORGANIZATION</font></div><div style="line-height:120%;padding-top:6px;font-size:10pt;"><font 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, as well as in California and South Florida. As of </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2015</font><font 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 </font><font style="font-family:inherit;font-size:10pt;">90</font><font style="font-family:inherit;font-size:10pt;"> predominantly retail real estate projects.</font></div><div style="line-height:120%;padding-top:12px;font-size:10pt;"><font 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 </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">90%</font><font 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.</font></div></div>
CY2015	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Use of Estimates</font></div><div style="line-height:120%;padding-top:6px;font-size:10pt;"><font 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.</font></div></div>

Files In Submission

Name	View Source	Status
0000034903-16-000045-index-headers.html	Edgar Link	pending
0000034903-16-000045-index.html	Edgar Link	pending
0000034903-16-000045.txt	Edgar Link	pending
0000034903-16-000045-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
frt-1231201510k.htm	Edgar Link	pending
frt-12312015xex211.htm	Edgar Link	pending
frt-12312015xex231.htm	Edgar Link	pending
frt-12312015xex311.htm	Edgar Link	pending
frt-12312015xex312.htm	Edgar Link	pending
frt-12312015xex321.htm	Edgar Link	pending
frt-12312015xex322.htm	Edgar Link	pending
frt-1231201_chartx05234a01.jpg	Edgar Link	pending
frt-20151231.xml	Edgar Link	completed
frt-20151231.xsd	Edgar Link	pending
frt-20151231_cal.xml	Edgar Link	unprocessable
frt-20151231_def.xml	Edgar Link	unprocessable
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2015 Q4 Form 10-K Financial Statement

#000003490316000045 Filed on February 09, 2016

Income Statement

Balance Sheet

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$FRT FEDERAL REALTY INVESTMENT TRUST Stock $frt

2015 Q4 Form 10-K Financial Statement

#000003490316000045 Filed on February 09, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FRT
FEDERAL REALTY INVESTMENT TRUST Stock $frt