$FRT
Federal Realty Investment Trust Stock $frt

$frt Overview Financials Valuation SEC Filings Company Website

2011 Q4 Form 10-K Financial Statement

#000003490313000006 Filed on February 12, 2013

Income Statement

Concept	2011 Q4	2011 Q3	2011 Q2
Revenue	$141.5M	$137.7M	$136.3M
YoY Change	3.01%	3.16%	2.3%
Cost Of Revenue	$42.60M	$41.60M	$40.70M
YoY Change	-133.44%	-1.42%	0.99%
Gross Profit	$96.90M	$96.00M	$95.60M
YoY Change	-63.39%	5.26%	2.91%
Gross Profit Margin	68.5%	69.74%	70.15%
Selling, General & Admin	$9.300M	$7.200M	$6.400M
YoY Change	-153.45%	22.03%	6.67%
% of Gross Profit	9.6%	7.5%	6.69%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$31.90M	$32.10M	$32.00M
YoY Change	5.98%	8.45%	2.56%
% of Gross Profit	32.92%	33.44%	33.47%
Operating Expenses	$40.90M	$80.91M	$78.95M
YoY Change	-90.6%	4.33%	112.79%
Operating Profit	$57.23M	$56.76M	$57.33M
YoY Change	-2.6%	1.54%	2.67%
Interest Expense	-$25.10M	$23.80M	$23.91M
YoY Change	-133.07%	-5.94%	-194.86%
% of Operating Profit	-43.86%	41.92%	41.69%
Other Income/Expense, Net
YoY Change
Pretax Income	$30.90M	$33.50M	$33.90M
YoY Change	-133.7%	9.12%	10.78%
Income Tax	$0.00	$0.00	$0.00
% Of Pretax Income	0.0%	0.0%	0.0%
Net Earnings	$30.92M	$47.05M	$34.76M
YoY Change	-5.77%	58.75%	11.71%
Net Earnings / Revenue	21.86%	34.18%	25.5%
Basic Earnings Per Share	$0.48	$0.74	$0.55
Diluted Earnings Per Share	$0.48	$0.74	$0.55
COMMON SHARES
Basic Shares Outstanding	63.50M shares	62.82M shares	62.21M shares
Diluted Shares Outstanding		62.99M shares	62.39M shares

Balance Sheet

Concept	2011 Q4	2011 Q3	2011 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$67.80M	$22.10M	$19.80M
YoY Change	329.11%	140.22%	-16.1%
Cash & Equivalents	$67.81M	$22.07M	$19.85M
Short-Term Investments
Other Short-Term Assets	$121.5M	$109.4M	$98.30M
YoY Change	9.76%	3.6%	13.12%
Inventory
Prepaid Expenses
Receivables	$75.90M	$78.50M	$73.90M
Other Receivables	$56.00M	$56.10M	$56.60M
Total Short-Term Assets	$321.2M	$266.1M	$248.6M
YoY Change	33.67%	14.16%	10.2%
LONG-TERM ASSETS
Property, Plant & Equipment	$3.299B	$2.917B	$2.892B
YoY Change	16.82%	2.91%	2.61%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$34.40M	$57.80M	$57.90M
YoY Change	-33.33%	11.58%	11.56%
Other Assets		$4.200M	$16.50M
YoY Change
Total Long-Term Assets	$3.345B	$2.989B	$2.972B
YoY Change	14.58%	3.27%	3.27%
TOTAL ASSETS
Total Short-Term Assets	$321.2M	$266.1M	$248.6M
Total Long-Term Assets	$3.345B	$2.989B	$2.972B
Total Assets	$3.666B	$3.255B	$3.221B
YoY Change	16.04%	4.08%	3.77%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$104.7M	$89.60M	$86.60M
YoY Change	2.05%	-20.36%	-18.91%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$178.2M	$209.3M
YoY Change		272.03%	896.67%
Long-Term Debt Due		$548.0M	$546.3M
YoY Change		-7.65%	-8.39%
Total Short-Term Liabilities	$161.2M	$872.0M	$896.5M
YoY Change	3.33%	8.04%	15.36%
LONG-TERM LIABILITIES
Long-Term Debt	$2.110B	$1.005B	$1.005B
YoY Change	19.43%	-6.96%	-6.96%
Other Long-Term Liabilities	$68.80M	$55.00M	$55.60M
YoY Change	24.41%	3.19%	6.31%
Total Long-Term Liabilities	$2.179B	$1.060B	$1.060B
YoY Change	19.58%	-6.49%	-6.35%
TOTAL LIABILITIES
Total Short-Term Liabilities	$161.2M	$872.0M	$896.5M
Total Long-Term Liabilities	$2.179B	$1.060B	$1.060B
Total Liabilities	$2.340B	$1.932B	$1.988B
YoY Change	18.29%	-2.03%	2.45%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock	$1.766B	$1.825B
YoY Change	9.51%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.216B	$1.292B	$1.233B
YoY Change
Total Liabilities & Shareholders Equity	$3.666B	$3.255B	$3.221B
YoY Change	16.04%	4.08%	3.77%

Cashflow Statement

Concept	2011 Q4	2011 Q3	2011 Q2
OPERATING ACTIVITIES
Net Income	$30.92M	$47.05M	$34.76M
YoY Change	-5.77%	58.75%	11.71%
Depreciation, Depletion And Amortization	$31.90M	$32.10M	$32.00M
YoY Change	5.98%	8.45%	2.56%
Cash From Operating Activities	$71.70M	$54.30M	$72.70M
YoY Change	-6.88%	7.74%	1.96%
INVESTING ACTIVITIES
Capital Expenditures	-$130.4M	-$41.40M	-$24.80M
YoY Change	81.11%	-8.61%	42.53%
Acquisitions
YoY Change
Other Investing Activities	$35.40M	$16.90M	$900.0K
YoY Change	-1031.58%	-512.2%	-104.69%
Cash From Investing Activities	-$95.10M	-$24.50M	-$23.90M
YoY Change	25.46%	-50.4%	-34.88%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	69.10M	-27.50M	-39.00M
YoY Change	1179.63%	78.57%	15.73%
NET CHANGE
Cash From Operating Activities	71.70M	54.30M	72.70M
Cash From Investing Activities	-95.10M	-24.50M	-23.90M
Cash From Financing Activities	69.10M	-27.50M	-39.00M
Net Change In Cash	45.70M	2.300M	9.800M
YoY Change	592.42%	-115.97%	988.89%
FREE CASH FLOW
Cash From Operating Activities	$71.70M	$54.30M	$72.70M
Capital Expenditures	-$130.4M	-$41.40M	-$24.80M
Free Cash Flow	$202.1M	$95.70M	$97.50M
YoY Change	35.64%	0.0%	9.92%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2011Q4	us-gaap	Accounts And Notes Receivable Net AccountsAndNotesReceivableNet	75921000	USD
CY2012Q4	us-gaap	Accounts And Notes Receivable Net AccountsAndNotesReceivableNet	73861000	USD
CY2011Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	104660000	USD
CY2012Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	120929000	USD
CY2012Q4	us-gaap	Accumulated Amortization Deferred Finance Costs AccumulatedAmortizationDeferredFinanceCosts	10140000	USD
CY2011Q4	us-gaap	Accumulated Amortization Deferred Finance Costs AccumulatedAmortizationDeferredFinanceCosts	9098000	USD
CY2011Q4	us-gaap	Accumulated Distributions In Excess Of Net Income AccumulatedDistributionsInExcessOfNetIncome	555541000	USD
CY2012Q4	us-gaap	Accumulated Distributions In Excess Of Net Income AccumulatedDistributionsInExcessOfNetIncome	586970000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-3940000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-12388000	USD
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1875525000	USD
CY2011Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1764940000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8247000	USD
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10371000	USD
CY2010	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6487000	USD
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	17600000	USD
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	15900000	USD
CY2010	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	-1600000	USD
CY2011	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	-1400000	USD
CY2012	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	-1100000	USD
CY2011	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	100000	shares
CY2010	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	200000	shares
CY2012	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2011Q4	us-gaap	Assets Assets	3666210000	USD
CY2012Q4	us-gaap	Assets Assets	3898565000	USD
CY2012Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	71693000	USD
CY2011Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	63093000	USD
CY2010	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	0	USD
CY2012	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	0	USD
CY2011	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	4556000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	200757000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	5787000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	5797000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	5788000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	5787000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	5788000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	171810000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	129064000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	71693000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	36988000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	67806000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	135389000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	15797000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-30818000	USD
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-119592000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	52009000	USD
CY2012	us-gaap	Cash Flow Hedge Loss Reclassified To Interest Expense CashFlowHedgeLossReclassifiedToInterestExpense	4100000	USD
CY2011	us-gaap	Cash Flow Hedge Loss Reclassified To Interest Expense CashFlowHedgeLossReclassifiedToInterestExpense	300000	USD
CY2012Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	33600000	USD
CY2011Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	64815446	shares
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	63544150	shares
CY2011Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	63544150	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	64815446	shares
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	648000	USD
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	636000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	143477000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	139977000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	122790000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	5695000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	5447000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	4307000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	128237000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	145672000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	147784000	USD
CY2012Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	288714000	USD
CY2011Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	193836000	USD
CY2012	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	41616000	USD
CY2011	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	41977000	USD
CY2010	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	42278000	USD
CY2011Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	2110410000	USD
CY2012Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	2208602000	USD
CY2011Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	11816000	USD
CY2012Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	10861000	USD
CY2012Q4	us-gaap	Deferred Rent Receivables Net DeferredRentReceivablesNet	56100000	USD
CY2011Q4	us-gaap	Deferred Rent Receivables Net DeferredRentReceivablesNet	50500000	USD
CY2012	us-gaap	Depreciation And Amortization DepreciationAndAmortization	142039000	USD
CY2010	us-gaap	Depreciation And Amortization DepreciationAndAmortization	118878000	USD
CY2011	us-gaap	Depreciation And Amortization DepreciationAndAmortization	126208000	USD
CY2012Q4	us-gaap	Derivative Fixed Interest Rate DerivativeFixedInterestRate	0.0172
CY2010	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	110519000	USD
CY2012	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	112760000	USD
CY2011	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	109549000	USD
CY2011	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	15075000	USD
CY2012	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	0	USD
CY2010	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	1000000	USD
CY2012	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	0	USD
CY2010	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	976000	USD
CY2011	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	957000	USD
CY2010	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	3500000	USD
CY2011	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	2300000	USD
CY2012	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	0	USD
CY2011Q3	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	163000	USD
CY2011Q2	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	1048000	USD
CY2011Q4	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	93000	USD
CY2011Q1	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	978000	USD
CY2012	us-gaap	Factors Used To Identify Entitys Reportable Segments FactorsUsedToIdentifyEntitysReportableSegments	10% of our revenues or property operating income
CY2012	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	182813000	USD
CY2010	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	163382000	USD
CY2011	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	171335000	USD
CY2011Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	44229000	USD
CY2012Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	47685000	USD
CY2010	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	541000	USD
CY2011	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	541000	USD
CY2012	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	541000	USD
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.99
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.29
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.36
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.74
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.58
CY2011Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.48
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.67
CY2011Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.55
CY2011Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.50
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.51
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.60
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.35
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.98
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.28
CY2011Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.48
CY2011Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.55
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.67
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.58
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.74
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.51
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.60
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.50
CY2012	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	-908000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	-663000	USD
CY2010	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	-745000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	5700000	USD
CY2010	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	4200000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	15200000	USD
CY2012Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	15300000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y4M
CY2010	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	-6285000	USD
CY2011	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	-8097000	USD
CY2012	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	-10105000	USD
CY2011	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	15075000	USD
CY2010	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	1410000	USD
CY2012	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	11860000	USD
CY2010	us-gaap	Gain Loss On Sale Of Properties Net Of Applicable Income Taxes GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes	410000	USD
CY2011	us-gaap	Gain Loss On Sale Of Properties Net Of Applicable Income Taxes GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes	0	USD
CY2012	us-gaap	Gain Loss On Sale Of Properties Net Of Applicable Income Taxes GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes	11860000	USD
CY2011	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	296000	USD
CY2012	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2010	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-2801000	USD
CY2012	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	31158000	USD
CY2010	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	24189000	USD
CY2011	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	28985000	USD
CY2012	us-gaap	Income Loss Before Gain Or Loss On Sale Of Properties Extraordinary Items And Cumulative Effects Of Accounting Changes IncomeLossBeforeGainOrLossOnSaleOfPropertiesExtraordinaryItemsAndCumulativeEffectsOfAccountingChanges	144372000	USD
CY2011	us-gaap	Income Loss Before Gain Or Loss On Sale Of Properties Extraordinary Items And Cumulative Effects Of Accounting Changes IncomeLossBeforeGainOrLossOnSaleOfPropertiesExtraordinaryItemsAndCumulativeEffectsOfAccountingChanges	149612000	USD
CY2010	us-gaap	Income Loss Before Gain Or Loss On Sale Of Properties Extraordinary Items And Cumulative Effects Of Accounting Changes IncomeLossBeforeGainOrLossOnSaleOfPropertiesExtraordinaryItemsAndCumulativeEffectsOfAccountingChanges	127827000	USD
CY2012	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	140065000	USD
CY2010	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	120604000	USD
CY2011	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	126079000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	5475000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	4307000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	5247000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	131554000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	125851000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	144372000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.95
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.17
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.00
CY2012	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.16
CY2011	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.99
CY2010	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.94
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	1976000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	18058000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	17838000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	1776000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.29
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.03
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.03
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.29
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2012	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1757000	USD
CY2011	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1808000	USD
CY2010	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1060000	USD
CY2012	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-1151000	USD
CY2010	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	255000	USD
CY2011	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	832000	USD
CY2010	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-7461000	USD
CY2012	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-7332000	USD
CY2011	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-1888000	USD
CY2010	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-879000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-14994000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	3259000	USD
CY2011	us-gaap	Increase Decrease In Lease Acquisition Costs IncreaseDecreaseInLeaseAcquisitionCosts	12415000	USD
CY2012	us-gaap	Increase Decrease In Lease Acquisition Costs IncreaseDecreaseInLeaseAcquisitionCosts	14233000	USD
CY2010	us-gaap	Increase Decrease In Lease Acquisition Costs IncreaseDecreaseInLeaseAcquisitionCosts	10272000	USD
CY2010	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2824000	USD
CY2011	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-2613000	USD
CY2012	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	7793000	USD
CY2011	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	300000	shares
CY2010	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	200000	shares
CY2012	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	300000	shares
CY2012	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	175000	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	165000	shares
CY2010	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	142000	shares
CY2011	us-gaap	Interest Costs Incurred InterestCostsIncurred	106562000	USD
CY2012	us-gaap	Interest Costs Incurred InterestCostsIncurred	123441000	USD
CY2010	us-gaap	Interest Costs Incurred InterestCostsIncurred	108167000	USD
CY2011	us-gaap	Interest Expense InterestExpense	98465000	USD
CY2012	us-gaap	Interest Expense InterestExpense	113336000	USD
CY2010	us-gaap	Interest Expense InterestExpense	101882000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	114419000	USD
CY2010	us-gaap	Interest Paid Net InterestPaidNet	98932000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	95424000	USD
CY2012Q4	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	4200000	USD
CY2012	us-gaap	Investment Income Interest InvestmentIncomeInterest	689000	USD
CY2011	us-gaap	Investment Income Interest InvestmentIncomeInterest	218000	USD
CY2010	us-gaap	Investment Income Interest InvestmentIncomeInterest	256000	USD
CY2012Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	33169000	USD
CY2011Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	34352000	USD
CY2012Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	15900000	USD
CY2011Q4	us-gaap	Liabilities Liabilities	2340281000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	2493552000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3898565000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3666210000	USD
CY2011Q4	us-gaap	Line Of Credit Facility Amount Outstanding LineOfCreditFacilityAmountOutstanding	0	USD
CY2012Q4	us-gaap	Line Of Credit Facility Amount Outstanding LineOfCreditFacilityAmountOutstanding	0	USD
CY2011	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	163500000	USD
CY2010	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	23400000	USD
CY2012	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	1500000	USD
CY2012	us-gaap	Line Of Credit Facility Commitment Fee Amount LineOfCreditFacilityCommitmentFeeAmount	800000	USD
CY2010	us-gaap	Line Of Credit Facility Maximum Amount Outstanding During Period LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod	82000000	USD
CY2012	us-gaap	Line Of Credit Facility Maximum Amount Outstanding During Period LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod	186000000	USD
CY2011	us-gaap	Line Of Credit Facility Maximum Amount Outstanding During Period LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod	265000000	USD
CY2012Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	400000000	USD
CY2011	us-gaap	Loans Assumed1 LoansAssumed1	308506000	USD
CY2010	us-gaap	Loans Assumed1 LoansAssumed1	0	USD
CY2012	us-gaap	Loans Assumed1 LoansAssumed1	67615000	USD
CY2012Q4	us-gaap	Long Term Debt LongTermDebt	2126508000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	850467000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	175552000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	377989000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	197114000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	206282000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	319104000	USD
CY2012	us-gaap	Loss Contingency Loss In Period LossContingencyLossInPeriod	0	USD
CY2011	us-gaap	Loss Contingency Loss In Period LossContingencyLossInPeriod	0	USD
CY2010	us-gaap	Loss Contingency Loss In Period LossContingencyLossInPeriod	-250000	USD
CY2012	us-gaap	Marketing Expense MarketingExpense	7321000	USD
CY2010	us-gaap	Marketing Expense MarketingExpense	4789000	USD
CY2011	us-gaap	Marketing Expense MarketingExpense	6868000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	244711000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	151925000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	143917000	USD
CY2011Q4	us-gaap	Minority Interest MinorityInterest	24512000	USD
CY2012Q4	us-gaap	Minority Interest MinorityInterest	23781000	USD
CY2012	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	2232000	USD
CY2011	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	2320000	USD
CY2010	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	2223000	USD
CY2011	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	2538000	USD
CY2012Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	55648000	USD
CY2009Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	48336000	USD
CY2010Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	44813000	USD
CY2011Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	55967000	USD
CY2010	us-gaap	Mortgage Loans On Real Estate Amortization Of Premium MortgageLoansOnRealEstateAmortizationOfPremium	-465000	USD
CY2011	us-gaap	Mortgage Loans On Real Estate Amortization Of Premium MortgageLoansOnRealEstateAmortizationOfPremium	-311000	USD
CY2012	us-gaap	Mortgage Loans On Real Estate Amortization Of Premium MortgageLoansOnRealEstateAmortizationOfPremium	-772000	USD
CY2012Q4	us-gaap	Mortgage Loans On Real Estate Carrying Amount Of Mortgages MortgageLoansOnRealEstateCarryingAmountOfMortgages	55648000	USD
CY2011Q4	us-gaap	Mortgage Loans On Real Estate Carrying Amount Of Mortgages MortgageLoansOnRealEstateCarryingAmountOfMortgages	56000000	USD
CY2011	us-gaap	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	7598000	USD
CY2012	us-gaap	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	1161000	USD
CY2010	us-gaap	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	464000	USD
CY2011Q4	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	55967000	USD
CY2012Q4	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	55648000	USD
CY2012Q4	us-gaap	Mortgage Loans On Real Estate Face Amount Of Mortgages MortgageLoansOnRealEstateFaceAmountOfMortgages	57777000	USD
CY2012Q4	us-gaap	Mortgage Loans On Real Estate Federal Income Tax Basis MortgageLoansOnRealEstateFederalIncomeTaxBasis	-57800000	USD
CY2012	us-gaap	Mortgage Loans On Real Estate Interest Rate MortgageLoansOnRealEstateInterestRate	0.094
CY2011	us-gaap	Mortgage Loans On Real Estate Interest Rate MortgageLoansOnRealEstateInterestRate	0.092
CY2012	us-gaap	Mortgage Loans On Real Estate New Mortgage Loans MortgageLoansOnRealEstateNewMortgageLoans	70000	USD
CY2011	us-gaap	Mortgage Loans On Real Estate New Mortgage Loans MortgageLoansOnRealEstateNewMortgageLoans	130000	USD
CY2010	us-gaap	Mortgage Loans On Real Estate New Mortgage Loans MortgageLoansOnRealEstateNewMortgageLoans	14787000	USD
CY2012	us-gaap	Mortgage Loans On Real Estate Number Of Loans MortgageLoansOnRealEstateNumberOfLoans	5	loan
CY2011	us-gaap	Mortgage Loans On Real Estate Number Of Loans MortgageLoansOnRealEstateNumberOfLoans	5	loan
CY2012Q4	us-gaap	Mortgage Loans On Real Estate Principal Amount Of Delinquent Loans MortgageLoansOnRealEstatePrincipalAmountOfDelinquentLoans	0	USD
CY2012Q4	us-gaap	Mortgage Loans On Real Estate Prior Liens MortgageLoansOnRealEstatePriorLiens	35000000	USD
CY2012	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. As of </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2012</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;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">88</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>
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-53893000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	3667000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-189239000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-273558000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-187088000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-196369000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	256735000	USD
CY2010	us-gaap	Net Income Loss NetIncomeLoss	122790000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	38644000	USD
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	31186000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	296633000	USD
CY2012	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	51325000	USD
CY2010	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	38681000	USD
CY2011	us-gaap	Payments For Proceeds From Real Estate Partnership Investment Net PaymentsForProceedsFromRealEstatePartnershipInvestmentNet	-34617000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	47053000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	32603000	USD
CY2011Q2	us-gaap	Net Income Loss NetIncomeLoss	34757000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	42986000	USD
CY2011Q4	us-gaap	Net Income Loss NetIncomeLoss	30921000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	37692000	USD
CY2012	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4307000	USD
CY2011	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	5695000	USD
CY2010	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	5447000	USD
CY2010	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	2986000	USD
CY2011	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	3492000	USD
CY2012	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	2592000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	143376000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	151384000	USD
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	122249000	USD
CY2011Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	46917000	USD
CY2011Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	31051000	USD
CY2011Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	30786000	USD
CY2012Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	37557000	USD
CY2011Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	34622000	USD
CY2012Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	42851000	USD
CY2012Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	32468000	USD
CY2012Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	38508000	USD
CY2011	us-gaap	Noncontrolling Interest Decrease From Deconsolidation NoncontrollingInterestDecreaseFromDeconsolidation	420000	USD
CY2012	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	175000	USD
CY2011	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	4279000	USD
CY2012Q4	us-gaap	Notes Payable NotesPayable	299575000	USD
CY2011Q4	us-gaap	Notes Payable NotesPayable	295159000	USD
CY2012Q4	us-gaap	Notional Amount Of Interest Rate Cash Flow Hedge Derivatives NotionalAmountOfInterestRateCashFlowHedgeDerivatives	275000000	USD
CY2012Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	88	properties
CY2012	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1
CY2012Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	13	state
CY2012	us-gaap	Operating Expenses OperatingExpenses	352756000	USD
CY2011	us-gaap	Operating Expenses OperatingExpenses	325362000	USD
CY2010	us-gaap	Operating Expenses OperatingExpenses	312579000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	227697000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	255262000	USD
CY2010	us-gaap	Operating Income Loss OperatingIncomeLoss	229218000	USD
CY2011Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	56757000	USD
CY2012Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	60547000	USD
CY2011Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	57233000	USD
CY2011Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	57334000	USD
CY2012Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	61779000	USD
CY2011Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	56373000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	57061000	USD
CY2012Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	65813000	USD
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	67123000	USD
CY2012	us-gaap	Payments For Proceeds From Real Estate Partnership Investment Net PaymentsForProceedsFromRealEstatePartnershipInvestmentNet	0	USD
CY2010	us-gaap	Payments For Proceeds From Real Estate Partnership Investment Net PaymentsForProceedsFromRealEstatePartnershipInvestmentNet	0	USD
CY2011	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	6947000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	1488000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	1088000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	1372000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	1428000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	1478000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	50207000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Receivable OperatingLeasesFutureMinimumPaymentsReceivable	3138524000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Current OperatingLeasesFutureMinimumPaymentsReceivableCurrent	434042000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Five Years OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears	254413000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Four Years OperatingLeasesFutureMinimumPaymentsReceivableInFourYears	311820000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Three Years OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears	355013000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Two Years OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears	399040000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Thereafter OperatingLeasesFutureMinimumPaymentsReceivableThereafter	1384196000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3940000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-8448000	USD
CY2010	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	7858000	USD
CY2011	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	8834000	USD
CY2012	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	10101000	USD
CY2012	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-4348000	USD
CY2010	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-4099000	USD
CY2011	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-3871000	USD
CY2012	us-gaap	Other Real Estate Revenue OtherRealEstateRevenue	20217000	USD
CY2010	us-gaap	Other Real Estate Revenue OtherRealEstateRevenue	14545000	USD
CY2011	us-gaap	Other Real Estate Revenue OtherRealEstateRevenue	9260000	USD
CY2012Q4	us-gaap	Partners Capital Account Units PartnersCapitalAccountUnits	320646	shares
CY2011	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	50540000	USD
CY2012	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	80865000	USD
CY2012	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	0	USD
CY2010	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	16930000	USD
CY2010	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	57133000	USD
CY2011	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	103557000	USD
CY2010	us-gaap	Percentage Rent PercentageRent	6358000	USD
CY2011	us-gaap	Percentage Rent PercentageRent	7576000	USD
CY2012	us-gaap	Percentage Rent PercentageRent	8568000	USD
CY2011	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	541000	USD
CY2010	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	541000	USD
CY2012	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	541000	USD
CY2011Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	25
CY2012Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	25
CY2010Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	25
CY2011Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2012Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2010Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2011Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	15000000	shares
CY2012Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	15000000	shares
CY2012Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	399896	shares
CY2011Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	399896	shares
CY2012Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	399896	shares
CY2011Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	399896	shares
CY2010Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	399896	shares
CY2012Q4	us-gaap	Preferred Stock Value PreferredStockValue	9997000	USD
CY2011Q4	us-gaap	Preferred Stock Value PreferredStockValue	9997000	USD
CY2011Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	121492000	USD
CY2012Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	132659000	USD
CY2012	us-gaap	Proceeds From Distributions Received From Real Estate Partnerships ProceedsFromDistributionsReceivedFromRealEstatePartnerships	1116000	USD
CY2011	us-gaap	Proceeds From Distributions Received From Real Estate Partnerships ProceedsFromDistributionsReceivedFromRealEstatePartnerships	1070000	USD
CY2010	us-gaap	Proceeds From Distributions Received From Real Estate Partnerships ProceedsFromDistributionsReceivedFromRealEstatePartnerships	237000	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	156862000	USD
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	114134000	USD
CY2010	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	6610000	USD
CY2010	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	9950000	USD
CY2012	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	5399000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	272193000	USD
CY2012	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	244807000	USD
CY2011	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2010	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	148457000	USD
CY2012Q1	us-gaap	Revenues Revenues	146289000	USD
CY2012Q4	us-gaap	Revenues Revenues	156364000	USD
CY2010	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	0	USD
CY2012	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	0	USD
CY2011	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	23695000	USD
CY2012Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	7100000	USD
CY2011Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	7100000	USD
CY2011	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	900000	USD
CY2012	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	1300000	USD
CY2012	us-gaap	Profit Loss ProfitLoss	156232000	USD
CY2010	us-gaap	Profit Loss ProfitLoss	128237000	USD
CY2011	us-gaap	Profit Loss ProfitLoss	149612000	USD
CY2012Q4	us-gaap	Profit Loss ProfitLoss	38858000	USD
CY2012Q2	us-gaap	Profit Loss ProfitLoss	33596000	USD
CY2011Q3	us-gaap	Profit Loss ProfitLoss	48302000	USD
CY2012Q3	us-gaap	Profit Loss ProfitLoss	39656000	USD
CY2012Q1	us-gaap	Profit Loss ProfitLoss	44122000	USD
CY2011Q2	us-gaap	Profit Loss ProfitLoss	36471000	USD
CY2011Q4	us-gaap	Profit Loss ProfitLoss	32455000	USD
CY2011Q1	us-gaap	Profit Loss ProfitLoss	32384000	USD
CY2010	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	6396000	USD
CY2011	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2649000	USD
CY2012	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2151000	USD
CY2011Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1127588000	USD
CY2012Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1224295000	USD
CY2009Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	938087000	USD
CY2010Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1035204000	USD
CY2011	us-gaap	Real Estate Accumulated Depreciation Depreciation Expense RealEstateAccumulatedDepreciationDepreciationExpense	114180000	USD
CY2010	us-gaap	Real Estate Accumulated Depreciation Depreciation Expense RealEstateAccumulatedDepreciationDepreciationExpense	108261000	USD
CY2012	us-gaap	Real Estate Accumulated Depreciation Depreciation Expense RealEstateAccumulatedDepreciationDepreciationExpense	128654000	USD
CY2012Q4	us-gaap	Real Estate And Accumulated Depreciation Accumulated Depreciation RealEstateAndAccumulatedDepreciationAccumulatedDepreciation	1224295000	USD
CY2011Q4	us-gaap	Real Estate And Accumulated Depreciation Amount Of Encumbrances RealEstateAndAccumulatedDepreciationAmountOfEncumbrances	810616000	USD
CY2012Q4	us-gaap	Real Estate And Accumulated Depreciation Amount Of Encumbrances RealEstateAndAccumulatedDepreciationAmountOfEncumbrances	832482000	USD
CY2012Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	3759769000	USD
CY2012Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Land RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	1019905000	USD
CY2012Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndBuildingsAndImprovements	4779674000	USD
CY2012Q4	us-gaap	Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Carrying Costs RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	2099814000	USD
CY2012Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	1627077000	USD
CY2012Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Land RealEstateAndAccumulatedDepreciationInitialCostOfLand	1052783000	USD
CY2012Q4	us-gaap	Real Estate Federal Income Tax Basis RealEstateFederalIncomeTaxBasis	4200000000	USD
CY2010Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	3895942000	USD
CY2009Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	3759234000	USD
CY2011Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	4426444000	USD
CY2012Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	4779674000	USD
CY2010	us-gaap	Real Estate Improvements RealEstateImprovements	97129000	USD
CY2012	us-gaap	Real Estate Improvements RealEstateImprovements	187990000	USD
CY2011	us-gaap	Real Estate Improvements RealEstateImprovements	147996000	USD
CY2010	us-gaap	Real Estate Insurance RealEstateInsurance	5054000	USD
CY2011	us-gaap	Real Estate Insurance RealEstateInsurance	5282000	USD
CY2012	us-gaap	Real Estate Insurance RealEstateInsurance	6298000	USD
CY2012Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	1224295000	USD
CY2011Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	1127588000	USD
CY2011Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	4426444000	USD
CY2012Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	4779674000	USD
CY2011Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	3298856000	USD
CY2012Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	3555379000	USD
CY2012	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	193131000	USD
CY2011	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	430758000	USD
CY2010	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	34855000	USD
CY2011	us-gaap	Real Estate Tax Expense RealEstateTaxExpense	60620000	USD
CY2012	us-gaap	Real Estate Tax Expense RealEstateTaxExpense	66799000	USD
CY2010	us-gaap	Real Estate Tax Expense RealEstateTaxExpense	58663000	USD
CY2012Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	94420000	USD
CY2011Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	85325000	USD
CY2010Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	65362000	USD
CY2012Q4	us-gaap	Rental Properties RentalProperties	4490960000	USD
CY2011Q4	us-gaap	Rental Properties RentalProperties	4232608000	USD
CY2012	us-gaap	Repayments Of Debt RepaymentsOfDebt	216000000	USD
CY2011	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	91952000	USD
CY2012	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	53414000	USD
CY2010	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	262340000	USD
CY2012	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	175000000	USD
CY2011	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	75000000	USD
CY2010	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
CY2010	us-gaap	Revenues Revenues	541797000	USD
CY2012	us-gaap	Revenues Revenues	608018000	USD
CY2011	us-gaap	Revenues Revenues	553059000	USD
CY2012Q3	us-gaap	Revenues Revenues	157805000	USD
CY2011Q2	us-gaap	Revenues Revenues	136279000	USD
CY2011Q3	us-gaap	Revenues Revenues	137664000	USD
CY2012Q2	us-gaap	Revenues Revenues	147560000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	53.76
CY2011Q1	us-gaap	Revenues Revenues	137650000	USD
CY2011Q4	us-gaap	Revenues Revenues	141466000	USD
CY2011Q4	us-gaap	Secured Debt SecuredDebt	747523000	USD
CY2012Q4	us-gaap	Secured Debt SecuredDebt	760789000	USD
CY2012Q4	us-gaap	Security Deposit Liability SecurityDepositLiability	12957000	USD
CY2011Q4	us-gaap	Security Deposit Liability SecurityDepositLiability	12221000	USD
CY2011Q4	us-gaap	Senior Notes SeniorNotes	1004635000	USD
CY2012Q4	us-gaap	Senior Notes SeniorNotes	1076545000	USD
CY2011	us-gaap	Service Management Costs ServiceManagementCosts	14989000	USD
CY2012	us-gaap	Service Management Costs ServiceManagementCosts	15167000	USD
CY2010	us-gaap	Service Management Costs ServiceManagementCosts	14641000	USD
CY2010	us-gaap	Share Based Compensation ShareBasedCompensation	5742000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	7584000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	9463000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	-14522	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	126169	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	96.35
CY2012	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	97430	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	81.94
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	73.51
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	287680	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	282837	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	85.28
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	74.00
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	-106804	shares
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	4300000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	6300000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	10300000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	72.78
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.04
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.3
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.019
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	293946	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	65.66
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	4200000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	4200000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	5600000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	-29334	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	44.61
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	11.77
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	16048000	USD
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	517653	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	390889	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	62.96
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	61.08
CY2012	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	58.46
CY2012	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0.00
CY2010	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y4M
CY2012Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	11276000	USD
CY2012	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y
CY2012	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y2M
CY2011	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	28823	shares
CY2010	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	34401	shares
CY2012	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	22814	shares
CY2010	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2544000	USD
CY2011	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2374000	USD
CY2010	frt	Earnings Allocated To Unvested Shares EarningsAllocatedToUnvestedShares	572000	USD
CY2012	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2248000	USD
CY2011	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	139298000	USD
CY2010	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	14000	USD
CY2012	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	106219000	USD
CY2010	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	4052000	USD
CY2012	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	5667000	USD
CY2011	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	15190000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	1286812000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	1216092000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1310593000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1240604000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1115768000	USD
CY2009Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1151738000	USD
CY2012	us-gaap	Stockholders Equity Other StockholdersEquityOther	13469000	USD
CY2010	us-gaap	Stockholders Equity Other StockholdersEquityOther	8035000	USD
CY2011	us-gaap	Stockholders Equity Other StockholdersEquityOther	9427000	USD
CY2010	us-gaap	Straight Line Rent StraightLineRent	4600000	USD
CY2012	us-gaap	Straight Line Rent StraightLineRent	6100000	USD
CY2011	us-gaap	Straight Line Rent StraightLineRent	5700000	USD
CY2012	us-gaap	Temporary Equity Other Changes TemporaryEquityOtherChanges	13469000	USD
CY2011	us-gaap	Temporary Equity Other Changes TemporaryEquityOtherChanges	9427000	USD
CY2011	us-gaap	Tenant Reimbursements TenantReimbursements	106347000	USD
CY2010	us-gaap	Tenant Reimbursements TenantReimbursements	107008000	USD
CY2012	us-gaap	Tenant Reimbursements TenantReimbursements	112740000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2011	frt	Gain On Sale Of Real Estate Per Basic Share GainOnSaleOfRealEstatePerBasicShare	0.00
CY2012	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>
CY2011	us-gaap	Utilities Costs UtilitiesCosts	18823000	USD
CY2012	us-gaap	Utilities Costs UtilitiesCosts	19213000	USD
CY2010	us-gaap	Utilities Costs UtilitiesCosts	18545000	USD
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	62603000	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	64056000	shares
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	61324000	shares
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	61182000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	62438000	shares
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	63881000	shares
CY2012Q4	frt	Accumulated Depreciation And Amortization Consolidated Variable Interest Entities AccumulatedDepreciationAndAmortizationConsolidatedVariableInterestEntities	12024000	USD
CY2011Q4	frt	Accumulated Depreciation And Amortization Consolidated Variable Interest Entities AccumulatedDepreciationAndAmortizationConsolidatedVariableInterestEntities	4991000	USD
CY2011	frt	Adjustment Depreciation And Amortization AdjustmentDepreciationAndAmortization	126568000	USD
CY2010	frt	Adjustment Depreciation And Amortization AdjustmentDepreciationAndAmortization	119817000	USD
CY2012	frt	Adjustment Depreciation And Amortization AdjustmentDepreciationAndAmortization	142039000	USD
CY2011	frt	Capital Expenditures Development Redevelopment CapitalExpendituresDevelopmentRedevelopment	91922000	USD
CY2010	frt	Capital Expenditures Development Redevelopment CapitalExpendituresDevelopmentRedevelopment	50414000	USD
CY2012	frt	Capital Expenditures Development Redevelopment CapitalExpendituresDevelopmentRedevelopment	129346000	USD
CY2012	frt	Capital Lease Obligation Extinguishment CapitalLeaseObligationExtinguishment	0	USD
CY2010	frt	Capital Lease Obligation Extinguishment CapitalLeaseObligationExtinguishment	1031000	USD
CY2011	frt	Capital Lease Obligation Extinguishment CapitalLeaseObligationExtinguishment	0	USD
CY2011	frt	Conversion And Redemption Of Operating Partnership Units ConversionAndRedemptionOfOperatingPartnershipUnits	151000	USD
CY2012	frt	Conversion And Redemption Of Operating Partnership Units ConversionAndRedemptionOfOperatingPartnershipUnits	828000	USD
CY2010	frt	Conversion And Redemption Of Operating Partnership Units ConversionAndRedemptionOfOperatingPartnershipUnits	137000	USD
CY2012Q4	frt	Convertible Preferred Stock Conversion Price Per Share ConvertiblePreferredStockConversionPricePerShare	104.69
CY2010	frt	Deferred Ground Rent Liability Extinguishment DeferredGroundRentLiabilityExtinguishment	8832000	USD
CY2012	frt	Deferred Ground Rent Liability Extinguishment DeferredGroundRentLiabilityExtinguishment	0	USD
CY2011	frt	Deferred Ground Rent Liability Extinguishment DeferredGroundRentLiabilityExtinguishment	0	USD
CY2010	frt	Depreciation Expense Real Estate DepreciationExpenseRealEstate	108300000	USD
CY2011	frt	Depreciation Expense Real Estate DepreciationExpenseRealEstate	114200000	USD
CY2012	frt	Depreciation Expense Real Estate DepreciationExpenseRealEstate	128700000	USD
CY2012	frt	Discontinued Operation Gain On Deconsolidation Of Variable Interest Entity DiscontinuedOperationGainOnDeconsolidationOfVariableInterestEntity	0	USD
CY2010	frt	Discontinued Operation Gain On Deconsolidation Of Variable Interest Entity DiscontinuedOperationGainOnDeconsolidationOfVariableInterestEntity	0	USD
CY2011	frt	Discontinued Operation Gain On Deconsolidation Of Variable Interest Entity DiscontinuedOperationGainOnDeconsolidationOfVariableInterestEntity	2026000	USD
CY2012	frt	Dividends Paid To Common And Preferred Shareholders DividendsPaidToCommonAndPreferredShareholders	179884000	USD
CY2011	frt	Dividends Paid To Common And Preferred Shareholders DividendsPaidToCommonAndPreferredShareholders	169254000	USD
CY2010	frt	Dividends Paid To Common And Preferred Shareholders DividendsPaidToCommonAndPreferredShareholders	163120000	USD
CY2011	frt	Earnings Allocated To Unvested Shares EarningsAllocatedToUnvestedShares	705000	USD
CY2012	frt	Earnings Allocated To Unvested Shares EarningsAllocatedToUnvestedShares	845000	USD
CY2010	frt	Gain On Sale Of Real Estate Per Basic Share GainOnSaleOfRealEstatePerBasicShare	0.01
CY2012	frt	Paymentsofdividendsandredemptionsminorityinterest Paymentsofdividendsandredemptionsminorityinterest	-9935000	USD
CY2010	frt	Paymentsofdividendsandredemptionsminorityinterest Paymentsofdividendsandredemptionsminorityinterest	-5346000	USD
CY2011	frt	Paymentsofdividendsandredemptionsminorityinterest Paymentsofdividendsandredemptionsminorityinterest	-8023000	USD
CY2012Q4	frt	Percent Of Annualized Base Rent Maximum PercentOfAnnualizedBaseRentMaximum	0.032
CY2012	frt	Gain On Sale Of Real Estate Per Basic Share GainOnSaleOfRealEstatePerBasicShare	0.19
CY2010	frt	Gain On Sale Of Real Estate Per Diluted Share GainOnSaleOfRealEstatePerDilutedShare	0.01
CY2011	frt	Gain On Sale Of Real Estate Per Diluted Share GainOnSaleOfRealEstatePerDilutedShare	0.00
CY2012	frt	Gain On Sale Of Real Estate Per Diluted Share GainOnSaleOfRealEstatePerDilutedShare	0.19
CY2012	frt	Ground Rent Expense GroundRentExpense	2189000	USD
CY2010	frt	Ground Rent Expense GroundRentExpense	3049000	USD
CY2011	frt	Ground Rent Expense GroundRentExpense	2047000	USD
CY2010	frt	Hedging Instruments Outstanding HedgingInstrumentsOutstanding	0
CY2010	frt	Income Loss From Continuing Operations Available For Common Shareholders IncomeLossFromContinuingOperationsAvailableForCommonShareholders	119491000	USD
CY2011	frt	Income Loss From Continuing Operations Available For Common Shareholders IncomeLossFromContinuingOperationsAvailableForCommonShareholders	124833000	USD
CY2012	frt	Income Loss From Continuing Operations Available For Common Shareholders IncomeLossFromContinuingOperationsAvailableForCommonShareholders	138679000	USD
CY2011	frt	Increase Decrease In Security Deposits And Other Liabilities IncreaseDecreaseInSecurityDepositsAndOtherLiabilities	-5642000	USD
CY2012	frt	Increase Decrease In Security Deposits And Other Liabilities IncreaseDecreaseInSecurityDepositsAndOtherLiabilities	4833000	USD
CY2010	frt	Increase Decrease In Security Deposits And Other Liabilities IncreaseDecreaseInSecurityDepositsAndOtherLiabilities	743000	USD
CY2012	frt	Investments Classified As Cash And Cash Equivalents Initial Maturity InvestmentsClassifiedAsCashAndCashEquivalentsInitialMaturity	P3M
CY2012	frt	Issuance And Repayments Of Mortgage And Other Notes Receivable Net IssuanceAndRepaymentsOfMortgageAndOtherNotesReceivableNet	-1095000	USD
CY2010	frt	Issuance And Repayments Of Mortgage And Other Notes Receivable Net IssuanceAndRepaymentsOfMortgageAndOtherNotesReceivableNet	13895000	USD
CY2011	frt	Issuance And Repayments Of Mortgage And Other Notes Receivable Net IssuanceAndRepaymentsOfMortgageAndOtherNotesReceivableNet	-9630000	USD
CY2012	frt	Lineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebt Fees LineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebtFees	0.014
CY2010	frt	Lineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebt Fees LineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebtFees	0.007
CY2011	frt	Lineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebt Fees LineofcreditfacilityweightedaverageinterestratebeforeamortizationofdebtFees	0.010
CY2011	frt	Litigation Provision LitigationProvision	0	USD
CY2010	frt	Litigation Provision LitigationProvision	330000	USD
CY2012	frt	Litigation Provision LitigationProvision	0	USD
CY2012Q4	frt	Maximum Period On Sale Of Properties To Defer Gains MaximumPeriodOnSaleOfPropertiesToDeferGains	180
CY2012	frt	Minimum Percentage Of Taxable Income Distributed To Shareholders MinimumPercentageOfTaxableIncomeDistributedToShareholders	0.9000
CY2010	frt	Mortgage Loans On Real Estate Consolidation Of Vie MortgageLoansOnRealEstateConsolidationOfVie	18311000	USD
CY2011	frt	Mortgage Loans On Real Estate Deconsolidation Of Vie MortgageLoansOnRealEstateDeconsolidationOfVie	18311000	USD
CY2011Q4	frt	Mortgage Payable From Consolidated Variable Interest Entities MortgagePayableFromConsolidatedVariableInterestEntities	207683000	USD
CY2012Q4	frt	Mortgage Payable From Consolidated Variable Interest Entities MortgagePayableFromConsolidatedVariableInterestEntities	205299000	USD
CY2011	frt	Net Income Available For Common Shareholders Basic And Diluted NetIncomeAvailableForCommonShareholdersBasicAndDiluted	142671000	USD
CY2012	frt	Net Income Available For Common Shareholders Basic And Diluted NetIncomeAvailableForCommonShareholdersBasicAndDiluted	150539000	USD
CY2010	frt	Net Income Available For Common Shareholders Basic And Diluted NetIncomeAvailableForCommonShareholdersBasicAndDiluted	121677000	USD
CY2010	frt	Noncash Deconsolidation Of Variable Interest Entity NoncashDeconsolidationOfVariableInterestEntity	0	USD
CY2011	frt	Noncash Deconsolidation Of Variable Interest Entity NoncashDeconsolidationOfVariableInterestEntity	18311000	USD
CY2012	frt	Noncash Deconsolidation Of Variable Interest Entity NoncashDeconsolidationOfVariableInterestEntity	0	USD
CY2012Q4	frt	Number Of Leases NumberOfLeases	2500	lease
CY2012	frt	Number Of Properties Exceeding Segment Reporting Threshold NumberOfPropertiesExceedingSegmentReportingThreshold	0	properties
CY2012Q4	frt	Number Of Share Based Compensation Plans NumberOfShareBasedCompensationPlans	2
CY2012Q4	frt	Operating Partnership Units Fair Value OperatingPartnershipUnitsFairValue	33400000	USD
CY2012Q4	frt	Operating Real Estate From Consolidated Variable Interest Entities OperatingRealEstateFromConsolidatedVariableInterestEntities	278826000	USD
CY2011Q4	frt	Operating Real Estate From Consolidated Variable Interest Entities OperatingRealEstateFromConsolidatedVariableInterestEntities	263570000	USD
CY2011Q4	frt	Other Liabilities And Deferred Credits OtherLiabilitiesAndDeferredCredits	68761000	USD
CY2012Q4	frt	Other Liabilities And Deferred Credits OtherLiabilitiesAndDeferredCredits	103379000	USD
CY2011	frt	Other Rental Income OtherRentalIncome	9020000	USD
CY2012	frt	Rental Income RentalIncome	582335000	USD
CY2011	frt	Rental Income RentalIncome	538701000	USD
CY2012	frt	Residual Profit Maxiumum ResidualProfitMaxiumum	0.50
CY2010	frt	Other Rental Income OtherRentalIncome	8866000	USD
CY2012	frt	Other Rental Income OtherRentalIncome	10522000	USD
CY2010	frt	Proceeds From Repayments Of Credit Facility ProceedsFromRepaymentsOfCreditFacility	76550000	USD
CY2011	frt	Proceeds From Repayments Of Credit Facility ProceedsFromRepaymentsOfCreditFacility	-81159000	USD
CY2012	frt	Proceeds From Repayments Of Credit Facility ProceedsFromRepaymentsOfCreditFacility	0	USD
CY2012	frt	Profit Loss Excluding Redeemable Noncontrolling Interests ProfitLossExcludingRedeemableNoncontrollingInterests	153640000	USD
CY2010	frt	Profit Loss Excluding Redeemable Noncontrolling Interests ProfitLossExcludingRedeemableNoncontrollingInterests	125251000	USD
CY2011	frt	Profit Loss Excluding Redeemable Noncontrolling Interests ProfitLossExcludingRedeemableNoncontrollingInterests	146120000	USD
CY2012	frt	Property Payroll Expense PropertyPayrollExpense	8704000	USD
CY2010	frt	Property Payroll Expense PropertyPayrollExpense	7909000	USD
CY2011	frt	Property Payroll Expense PropertyPayrollExpense	8080000	USD
CY2011	frt	Real Estate Accumulated Depreciation Dispositions And Retirements RealEstateAccumulatedDepreciationDispositionsAndRetirements	21796000	USD
CY2012	frt	Real Estate Accumulated Depreciation Dispositions And Retirements RealEstateAccumulatedDepreciationDispositionsAndRetirements	31947000	USD
CY2010	frt	Real Estate Accumulated Depreciation Dispositions And Retirements RealEstateAccumulatedDepreciationDispositionsAndRetirements	11144000	USD
CY2010	frt	Real Estate Consolidation Of Vie RealEstateConsolidationOfVie	18311000	USD
CY2011	frt	Real Estate Deconsolidation Of Vie RealEstateDeconsolidationOfVie	18311000	USD
CY2010	frt	Real Estate Dispositions And Retirements RealEstateDispositionsAndRetirements	13587000	USD
CY2011	frt	Real Estate Dispositions And Retirements RealEstateDispositionsAndRetirements	29941000	USD
CY2012	frt	Real Estate Dispositions And Retirements RealEstateDispositionsAndRetirements	27891000	USD
CY2012	frt	Redeemable Noncontrolling Interests Contributions RedeemableNoncontrollingInterestsContributions	19000	USD
CY2011	frt	Redeemable Noncontrolling Interests Contributions RedeemableNoncontrollingInterestsContributions	10064000	USD
CY2012	frt	Redeemable Noncontrolling Interests Distributions RedeemableNoncontrollingInterestsDistributions	6985000	USD
CY2011	frt	Redeemable Noncontrolling Interests Distributions RedeemableNoncontrollingInterestsDistributions	3020000	USD
CY2012Q4	frt	Remaining Capacity To Issue RemainingCapacityToIssue	213400000	USD
CY2010	frt	Rental Income RentalIncome	522651000	USD
CY2012	frt	Revenue Mortgage Interest RevenueMortgageInterest	5466000	USD
CY2011	frt	Revenue Mortgage Interest RevenueMortgageInterest	5098000	USD
CY2010	frt	Revenue Mortgage Interest RevenueMortgageInterest	4601000	USD
CY2012	dei	Trading Symbol TradingSymbol	FRT
CY2012	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;">2012</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;">2011</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;">2010</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;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">6.1</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</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;">5.7</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;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">4.6</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Net amortization of above and below market leases</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</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;">1.1</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><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;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">1.4</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</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;">1.6</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>
CY2012	frt	Share Based Compensation Expense Net Value ShareBasedCompensationExpenseNetValue	10371000	USD
CY2010	frt	Share Based Compensation Expense Net Value ShareBasedCompensationExpenseNetValue	6487000	USD
CY2011	frt	Share Based Compensation Expense Net Value ShareBasedCompensationExpenseNetValue	8247000	USD
CY2012	frt	Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition Years ShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognitionYears	P4Y7M6D
CY2012Q4	frt	Split Dollar Insurance Premiums Paid SplitDollarInsurancePremiumsPaid	4600000	USD
CY2011Q4	frt	Split Dollar Insurance Premiums Paid SplitDollarInsurancePremiumsPaid	4600000	USD
CY2012	frt	Straight Line Rents Collection Of Accounts Receivable Period StraightLineRentsCollectionOfAccountsReceivablePeriod	P1Y
CY2012Q4	frt	Totalfixedinterestrateduringswap Totalfixedinterestrateduringswap	0.0317
CY2012	dei	Amendment Flag AmendmentFlag	false
CY2012	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2012	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2012	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
CY2012	dei	Document Period End Date DocumentPeriodEndDate	2012-12-31
CY2012	dei	Document Type DocumentType	10-K
CY2012	dei	Entity Central Index Key EntityCentralIndexKey	0000034903
CY2013Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	64924837	shares
CY2012	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2012	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2012Q2	dei	Entity Public Float EntityPublicFloat	6700000000	USD
CY2012	dei	Entity Registrant Name EntityRegistrantName	FEDERAL REALTY INVESTMENT TRUST
CY2012	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2012	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes

Files In Submission

Name	View Source	Status
0000034903-13-000006-index-headers.html	Edgar Link	pending
0000034903-13-000006-index.html	Edgar Link	pending
0000034903-13-000006.txt	Edgar Link	pending
0000034903-13-000006-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
frt-12312012x10k.htm	Edgar Link	pending
frt-12312012xex1035.htm	Edgar Link	pending
frt-12312012xex1036.htm	Edgar Link	pending
frt-12312012xex1037.htm	Edgar Link	pending
frt-12312012xex1038.htm	Edgar Link	pending
frt-12312012xex211.htm	Edgar Link	pending
frt-12312012xex311.htm	Edgar Link	pending
frt-12312012xex312.htm	Edgar Link	pending
frt-12312012xex321.htm	Edgar Link	pending
frt-12312012xex322.htm	Edgar Link	pending
frt-12312012xexx231.htm	Edgar Link	pending
frt-20121231.xml	Edgar Link	completed
frt-20121231.xsd	Edgar Link	pending
frt-20121231_cal.xml	Edgar Link	unprocessable
frt-20121231_def.xml	Edgar Link	unprocessable
frt-20121231_lab.xml	Edgar Link	unprocessable
frt-20121231_pre.xml	Edgar Link	unprocessable
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$FRT
Federal Realty Investment Trust Stock $frt

2011 Q4 Form 10-K Financial Statement

#000003490313000006 Filed on February 12, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FRT Federal Realty Investment Trust Stock $frt

2011 Q4 Form 10-K Financial Statement

#000003490313000006 Filed on February 12, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FRT
Federal Realty Investment Trust Stock $frt