Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
OPERATING ACTIVITIES
Net income	$ 54,728	$ 49,739
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	71,674	63,874
Gain on sale of real estate and change in control of interest	0	(17,428)
(Income) loss from partnerships	(197)	1,338
Other, net	(1,636)	1,245
Changes in assets and liabilities, net of effects of acquisitions and dispositions:
(Increase) decrease in accounts receivable, net	(11,257)	883
(Increase) decrease in prepaid expenses and other assets	(4,577)	3,169
(Decrease) increase in accounts payable and accrued expenses	(5,419)	7,987
(Decrease) increase in security deposits and other liabilities	(247)	4,299
Net cash provided by operating activities	103,069	115,106
INVESTING ACTIVITIES
Acquisition of real estate	0	(5,694)
Capital expenditures - development and redevelopment	(66,610)	(68,527)
Capital expenditures - other	(18,409)	(15,189)
Proceeds from sale of real estate	874	19,896
Investment in partnerships	0	(2,657)
Distribution from partnerships in excess of earnings	517	285
Leasing costs	(4,577)	(2,955)
Repayment of mortgage and other notes receivable, net	11	0
Net cash used in investing activities	(88,194)	(74,841)
FINANCING ACTIVITIES
Repayment of mortgages, finance leases and notes payable	(869)	(48,845)
Issuance of common shares, net of costs	82,819	87,329
Dividends paid to common and preferred shareholders	(85,684)	(82,913)
Shares withheld for employee taxes	(4,601)	(2,805)
Distributions to and redemptions of noncontrolling interests	(3,514)	(1,485)
Net cash used in financing activities	(11,849)	(48,719)
Increase (decrease) in cash, cash equivalents and restricted cash	3,026	(8,454)
Cash, cash equivalents, and restricted cash at beginning of year	175,163	816,896
Cash, cash equivalents, and restricted cash at end of period	178,189	808,442
Federal Realty OP LP
OPERATING ACTIVITIES
Net income	54,728	49,739
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	71,674	63,874
Gain on sale of real estate and change in control of interest	0	(17,428)
(Income) loss from partnerships	(197)	1,338
Other, net	(1,636)	1,245
Changes in assets and liabilities, net of effects of acquisitions and dispositions:
(Increase) decrease in accounts receivable, net	(11,257)	883
(Increase) decrease in prepaid expenses and other assets	(4,577)	3,169
(Decrease) increase in accounts payable and accrued expenses	(5,419)	7,987
(Decrease) increase in security deposits and other liabilities	(247)	4,299
Net cash provided by operating activities	103,069	115,106
INVESTING ACTIVITIES
Acquisition of real estate	0	(5,694)
Capital expenditures - development and redevelopment	(66,610)	(68,527)
Capital expenditures - other	(18,409)	(15,189)
Proceeds from sale of real estate	874	19,896
Investment in partnerships	0	(2,657)
Distribution from partnerships in excess of earnings	517	285
Leasing costs	(4,577)	(2,955)
Repayment of mortgage and other notes receivable, net	11	0
Net cash used in investing activities	(88,194)	(74,841)
FINANCING ACTIVITIES
Repayment of mortgages, finance leases and notes payable	(869)	(48,845)
Issuance of common shares, net of costs	82,819	87,329
Dividends paid to common and preferred shareholders	(85,684)	(82,913)
Shares withheld for employee taxes	(4,601)	(2,805)
Distributions to and redemptions of noncontrolling interests	(3,514)	(1,485)
Net cash used in financing activities	(11,849)	(48,719)
Increase (decrease) in cash, cash equivalents and restricted cash	3,026	(8,454)
Cash, cash equivalents, and restricted cash at beginning of year	175,163	816,896
Cash, cash equivalents, and restricted cash at end of period	$ 178,189	$ 808,442