Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
OPERATING ACTIVITIES
Net income	$ 277,969	$ 152,339
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	223,244	202,160
Deconsolidation of VIE, Gain (Loss), Amount	(70,374)	0
Gain on sale of real estate and change in control of interest	(29,723)	(17,428)
(Income) loss from partnerships	(4,878)	86
Straight-line rent	(14,414)	(4,114)
Share-based compensation expense	10,255	9,780
Other, net	(3,509)	(2,206)
Changes in assets and liabilities, net of effects of acquisitions and dispositions:
(Increase) decrease in accounts receivable, net	(5,519)	4,857
Decrease (increase) in prepaid expenses and other assets	1,361	(6,004)
Increase in accounts payable and accrued expenses	13,948	15,505
Increase in security deposits and other liabilities	10,933	11,061
Net cash provided by operating activities	409,293	366,036
INVESTING ACTIVITIES
Acquisition of real estate	(429,990)	(366,466)
Capital expenditures - development and redevelopment	(213,881)	(282,833)
Capital expenditures - other	(70,004)	(48,693)
Costs associated with property sold under threat of condemnation	(2,915)	0
Proceeds from sale of real estate	66,682	19,896
Change in cash from deconsolidation of VIE	(4,192)	0
Investment in partnerships	(417)	(2,657)
Distribution from partnerships in excess of earnings	5,076	1,868
Leasing costs	(17,039)	(14,079)
(Issuance) repayment of mortgage and other notes receivable, net	(3,471)	31,122
Net cash used in investing activities	(670,151)	(661,842)
FINANCING ACTIVITIES
Net borrowings under revolving credit facility	267,000	0
Repayment of mortgages, finance leases and notes payable	(18,644)	(160,307)
Issuance of common shares, net of costs	292,671	87,279
Dividends paid to common and preferred shareholders	(258,009)	(250,849)
Shares withheld for employee taxes	(4,886)	(2,939)
Contributions from noncontrolling interests	0	104
Distributions to and redemptions of redeemable noncontrolling interests	(33,801)	(6,473)
Net cash provided by (used in) financing activities	244,331	(333,185)
Decrease in cash, cash equivalents and restricted cash	(16,527)	(628,991)
Cash, cash equivalents, and restricted cash at beginning of year	175,163	816,896
Cash, cash equivalents, and restricted cash at end of period	158,636	187,905
Federal Realty OP LP
OPERATING ACTIVITIES
Net income	277,969	152,339
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	223,244	202,160
Deconsolidation of VIE, Gain (Loss), Amount	(70,374)	0
Gain on sale of real estate and change in control of interest	(29,723)	(17,428)
(Income) loss from partnerships	(4,878)	86
Straight-line rent	(14,414)	(4,114)
Share-based compensation expense	10,255	9,780
Other, net	(3,509)	(2,206)
Changes in assets and liabilities, net of effects of acquisitions and dispositions:
(Increase) decrease in accounts receivable, net	(5,519)	4,857
Decrease (increase) in prepaid expenses and other assets	1,361	(6,004)
Increase in accounts payable and accrued expenses	13,948	15,505
Increase in security deposits and other liabilities	10,933	11,061
Net cash provided by operating activities	409,293	366,036
INVESTING ACTIVITIES
Acquisition of real estate	(429,990)	(366,466)
Capital expenditures - development and redevelopment	(213,881)	(282,833)
Capital expenditures - other	(70,004)	(48,693)
Costs associated with property sold under threat of condemnation	(2,915)	0
Proceeds from sale of real estate	66,682	19,896
Change in cash from deconsolidation of VIE	(4,192)	0
Investment in partnerships	(417)	(2,657)
Distribution from partnerships in excess of earnings	5,076	1,868
Leasing costs	(17,039)	(14,079)
(Issuance) repayment of mortgage and other notes receivable, net	(3,471)	31,122
Net cash used in investing activities	(670,151)	(661,842)
FINANCING ACTIVITIES
Net borrowings under revolving credit facility	267,000	0
Repayment of mortgages, finance leases and notes payable	(18,644)	(160,307)
Issuance of common shares, net of costs	292,671	87,279
Dividends paid to common and preferred shareholders	(258,009)	(250,849)
Shares withheld for employee taxes	(4,886)	(2,939)
Contributions from noncontrolling interests	0	104
Distributions to and redemptions of redeemable noncontrolling interests	(33,801)	(6,473)
Net cash provided by (used in) financing activities	244,331	(333,185)
Decrease in cash, cash equivalents and restricted cash	(16,527)	(628,991)
Cash, cash equivalents, and restricted cash at beginning of year	175,163	816,896
Cash, cash equivalents, and restricted cash at end of period	$ 158,636	$ 187,905