Consolidated Statements Of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
REVENUE
Rental income	$ 1,131,041	$ 1,073,292	$ 948,842
Mortgage interest income	1,113	1,086	2,382
Total revenue	1,132,154	1,074,378	951,224
EXPENSES
Rental expenses	231,666	228,958	198,121
Real estate taxes	131,429	127,824	118,496
General and administrative	50,707	52,636	49,856
Depreciation and amortization	321,763	302,409	279,976
Total operating expenses	735,565	711,827	646,449
Gain on deconsolidation of VIE	0	70,374	0
Gain on sale of real estate and change in control of interest	9,881	93,483	89,950
OPERATING INCOME	406,470	526,408	394,725
OTHER INCOME/(EXPENSE)
Other interest income	4,687	1,072	809
Interest expense	(167,809)	(136,989)	(127,698)
Income from partnerships	3,869	5,170	1,245
NET INCOME	247,217	395,661	269,081
Net income attributable to noncontrolling interests	(10,232)	(10,170)	(7,583)
NET INCOME ATTRIBUTABLE TO THE TRUST / PARTNERSHIP	236,985	385,491	261,498
Dividends on preferred shares	(8,032)	(8,034)	(8,042)
NET INCOME AVAILABLE FOR COMMON SHAREHOLDERS	$ 228,953	$ 377,457	$ 253,456
EARNINGS PER COMMON SHARE, BASIC
Net income available for common shareholders	$ 2.80	$ 4.71	$ 3.26
Weighted average number of common shares	81,313	79,854	77,336
EARNINGS PER COMMON SHARE, DILUTED
Net income available for common shareholders	$ 2.80	$ 4.71	$ 3.26
Weighted average number of common shares	81,313	80,508	77,368
COMPREHENSIVE INCOME
NET INCOME	$ 247,217	$ 395,661	$ 269,081
Other comprehensive (loss) income - change in value of interest rate swaps	(1,824)	8,569	3,917
COMPREHENSIVE INCOME	245,393	404,230	272,998
Comprehensive income attributable to noncontrolling interests	(10,113)	(10,935)	(7,903)
COMPREHENSIVE INCOME ATTRIBUTABLE TO THE TRUST / PARTNERSHIP	235,280	393,295	265,095
Federal Realty OP LP
REVENUE
Rental income	1,131,041	1,073,292	948,842
Mortgage interest income	1,113	1,086	2,382
Total revenue	1,132,154	1,074,378	951,224
EXPENSES
Rental expenses	231,666	228,958	198,121
Real estate taxes	131,429	127,824	118,496
General and administrative	50,707	52,636	49,856
Depreciation and amortization	321,763	302,409	279,976
Total operating expenses	735,565	711,827	646,449
Gain on deconsolidation of VIE	0	70,374	0
Gain on sale of real estate and change in control of interest	9,881	93,483	89,950
OPERATING INCOME	406,470	526,408	394,725
OTHER INCOME/(EXPENSE)
Other interest income	4,687	1,072	809
Interest expense	(167,809)	(136,989)	(127,698)
Income from partnerships	3,869	5,170	1,245
NET INCOME	247,217	395,661	269,081
Net income attributable to noncontrolling interests	(10,232)	(10,170)	(7,583)
NET INCOME ATTRIBUTABLE TO THE TRUST / PARTNERSHIP	236,985	385,491	261,498
Distributions declared to preferred unit holders	(8,032)	(8,034)	(8,042)
NET INCOME AVAILABLE FOR COMMON UNIT HOLDERS	$ 228,953	$ 377,457	$ 253,456
EARNINGS PER COMMON UNIT, BASIC
Net income available for common unit holders	$ 2.80	$ 4.71	$ 3.26
Weighted average common units outstanding, basic	81,313	79,854	77,336
EARNINGS PER COMMON UNIT, DILUTED
Net income available for common unit holders, diluted	$ 2.80	$ 4.71	$ 3.26
Weighted average common units outstanding, diluted	81,313	80,508	77,368
COMPREHENSIVE INCOME
NET INCOME	$ 247,217	$ 395,661	$ 269,081
Other comprehensive (loss) income - change in value of interest rate swaps	(1,824)	8,569	3,917
COMPREHENSIVE INCOME	245,393	404,230	272,998
Comprehensive income attributable to noncontrolling interests	(10,113)	(10,935)	(7,903)
COMPREHENSIVE INCOME ATTRIBUTABLE TO THE TRUST / PARTNERSHIP	$ 235,280	$ 393,295	$ 265,095