Summary Of Significant Accounting Policies (Derivative Instruments and Mortgage Notes Receivable) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014
Accounting Policies [Abstract]
Interest rate swaps associated with cash flow hedges to be reclassified within the next twelve months	$ 3.8
Residual profit maximum	50.00%frt_ResidualProfitMaximum

The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994

Name:	us-gaap_InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant