XML 27 R40.htm IDEA: XBRL DOCUMENT v2.4.1.9
Earnings Per Share (Narrative) (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Earnings Per Share Narrative [Line Items]      
Weighted average unvested shares outstanding 300,000us-gaap_IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights 300,000us-gaap_IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights  
Anti-dilutive stock options 0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount  
Cumulative convertible preferred shares, dividend rate 5.417%us-gaap_PreferredStockDividendRatePercentage   5.417%us-gaap_PreferredStockDividendRatePercentage
5.417% Series 1 Cumulative Convertible Preferred shares      
Earnings Per Share Narrative [Line Items]      
Cumulative convertible preferred shares, dividend rate 5.417%us-gaap_PreferredStockDividendRatePercentage
/ us-gaap_StatementClassOfStockAxis
= frt_A5417Series1CumulativeConvertiblePreferredMember
5.417%us-gaap_PreferredStockDividendRatePercentage
/ us-gaap_StatementClassOfStockAxis
= frt_A5417Series1CumulativeConvertiblePreferredMember