0000034903 2022-09-21 2022-09-21 0000034903 frt:FederalRealtyOPLPMember 2022-09-21 2022-09-21 0000034903 frt:CommonSharesOfBeneficialInterestMember 2022-09-21 2022-09-21 0000034903 frt:DepositorySharesMember 2022-09-21 2022-09-21 0000034903 0001901876 false false 8-K 2022-09-21 Federal Realty Investment Trust Federal Realty OP LP MD 1-07533 87-3916363 DE 333-262016-01 52-0782497 909 Rose Avenue, Suite 200 North Bethesda, MD 20852 301 998-8100 false false false false Common Shares of Beneficial Interest FRT NYSE Depositary Shares, each representing 1/1000 of a share FRT-C NYSE false false