Consolidated Statements Of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
REVENUE
Rental Income	$ 1,073,292	$ 948,842	$ 832,171
Mortgage interest income	1,086	2,382	3,323
Total revenue	1,074,378	951,224	835,494
EXPENSES
Rental expenses	228,958	198,121	170,920
Real estate taxes	127,824	118,496	119,242
General and administrative	52,636	49,856	41,680
Depreciation and amortization	302,409	279,976	255,027
Total operating expenses	711,827	646,449	586,869
Impairment charge	0	0	(57,218)
Gain on deconsolidation of VIE	70,374	0	0
Gain on sale of real estate and change in control of interest, net of tax	93,483	89,950	98,117
OPERATING INCOME	526,408	394,725	289,524
OTHER INCOME/(EXPENSE)
Other interest income	1,072	809	1,894
Interest expense	(136,989)	(127,698)	(136,289)
Early extinguishment of debt	0	0	(11,179)
Income (loss) from partnerships	5,170	1,245	(8,062)
NET INCOME	395,661	269,081	135,888
Net income attributable to noncontrolling interests	(10,170)	(7,583)	(4,182)
NET INCOME ATTRIBUTABLE TO THE TRUST / PARTNERSHIP	385,491	261,498	131,706
Dividends on preferred shares	(8,034)	(8,042)	(8,042)
NET INCOME AVAILABLE FOR COMMON SHAREHOLDERS	$ 377,457	$ 253,456	$ 123,664
EARNINGS PER COMMON SHARE, BASIC
Net income available for common shareholders	$ 4.71	$ 3.26	$ 1.62
Weighted average number of common shares	79,854	77,336	75,515
EARNINGS PER COMMON SHARE, DILUTED
Net income available for common shareholders	$ 4.71	$ 3.26	$ 1.62
Weighted average number of common shares	80,508	77,368	75,515
COMPREHENSIVE INCOME
NET INCOME	$ 395,661	$ 269,081	$ 135,888
Other comprehensive income (loss) - change in value of interest rate swaps	8,569	3,917	(5,302)
COMPREHENSIVE INCOME	404,230	272,998	130,586
Comprehensive income attributable to noncontrolling interests	(10,935)	(7,903)	(3,711)
COMPREHENSIVE INCOME ATTRIBUTABLE TO THE TRUST / PARTNERSHIP	393,295	265,095	126,875
Federal Realty OP LP
REVENUE
Rental Income	1,073,292	948,842	832,171
Mortgage interest income	1,086	2,382	3,323
Total revenue	1,074,378	951,224	835,494
EXPENSES
Rental expenses	228,958	198,121	170,920
Real estate taxes	127,824	118,496	119,242
General and administrative	52,636	49,856	41,680
Depreciation and amortization	302,409	279,976	255,027
Total operating expenses	711,827	646,449	586,869
Impairment charge	0	0	(57,218)
Gain on deconsolidation of VIE	70,374	0	0
Gain on sale of real estate and change in control of interest, net of tax	93,483	89,950	98,117
OPERATING INCOME	526,408	394,725	289,524
OTHER INCOME/(EXPENSE)
Other interest income	1,072	809	1,894
Interest expense	(136,989)	(127,698)	(136,289)
Early extinguishment of debt	0	0	(11,179)
Income (loss) from partnerships	5,170	1,245	(8,062)
NET INCOME	395,661	269,081	135,888
Net income attributable to noncontrolling interests	(10,170)	(7,583)	(4,182)
NET INCOME ATTRIBUTABLE TO THE TRUST / PARTNERSHIP	385,491	261,498	131,706
Distributions declared to preferred unit holders	(8,034)	(8,042)	(8,042)
NET INCOME AVAILABLE FOR COMMON UNIT HOLDERS	$ 377,457	$ 253,456	$ 123,664
EARNINGS PER COMMON UNIT, BASIC
Net income available for common unit holders, basic	$ 4.71	$ 3.26	$ 1.62
Weighted average common units outstanding, basic	79,854	77,336	75,515
EARNINGS PER COMMON UNIT, DILUTED
Net income available for common unit holders, diluted	$ 4.71	$ 3.26	$ 1.62
Weighted average common units outstanding, diluted	80,508	77,368	75,515
COMPREHENSIVE INCOME
NET INCOME	$ 395,661	$ 269,081	$ 135,888
Other comprehensive income (loss) - change in value of interest rate swaps	8,569	3,917	(5,302)
COMPREHENSIVE INCOME	404,230	272,998	130,586
Comprehensive income attributable to noncontrolling interests	(10,935)	(7,903)	(3,711)
COMPREHENSIVE INCOME ATTRIBUTABLE TO THE TRUST / PARTNERSHIP	$ 393,295	$ 265,095	$ 126,875