Earnings Per Share (Schedule Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net income	$ 57,731	$ 54,728
Less: Preferred share dividends	(2,008)	(2,010)
Less: Income from operations attributable to noncontrolling interests	(2,396)	(2,744)
Less: Earnings allocated to unvested shares	(327)	(307)
Net income available for common shareholders, basic and diluted	$ 53,000	$ 49,667
Weighted average common shares outstanding, basic	81,141	78,446
Open forward contracts for share issuances	0	97
Weighted average common shares outstanding, diluted	81,141	78,543
EARNINGS PER COMMON SHARE, BASIC AND DILUTED:
Net income available for common shareholders	$ 0.65	$ 0.63
Federal Realty OP LP
Net income	$ 57,731	$ 54,728
Less: Preferred unit distributions	(2,008)	(2,010)
Less: Income from operations attributable to noncontrolling interests	(2,396)	(2,744)
Less: Earnings allocated to unvested units	(327)	(307)
Net income available to common unit holders, basic and diluted	$ 53,000	$ 49,667
Weighted average common units outstanding, basic	81,141	78,446
Common unit issuances relating to open common share forward contracts	0	97
Weighted average common units outstanding, diluted	81,141	78,543
EARNINGS PER COMMON UNIT, BASIC AND DILUTED:
Net income available for common unit holders	$ 0.65	$ 0.63