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Earnings Per Share And Unit (Schedule Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2026 | Mar. 31, 2025
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |
Net income | $ 161,070 | $ 66,578
Dividends on preferred shares | (2,008) | (2,008)
Less: Income from operations attributable to noncontrolling interests | (1,971) | (2,810)
Earnings Allocated To Unvested Shares | (547) | (321)
Net income available for common shareholders, basic | 156,544 | 61,439
Add: Income attributable to downREIT operating partnership units | 594 | 0
Net income available for common shareholders, diluted | $ 157,271 | $ 61,439
Weighted average number of common shares, Basic | 86,040 | 85,472
DownREIT operating partnership units | 528 | 0
Weighted average number of common shares, Diluted | 86,662 | 85,472
Net income available for common shareholders, Basic | $ 1.82 | $ 0.72
Net income available for common shareholders, Diluted | $ 1.81 | $ 0.72
Federal Realty OP LP |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |
Net income | $ 161,070 | $ 66,578
Distributions on preferred units | (2,008) | (2,008)
Less: Income from operations attributable to noncontrolling interests | (1,971) | (2,810)
Earnings allocated to unvested units | (547) | (321)
Net income available for common unit holders, basic | 156,544 | 61,439
Add: Income attributable to downREIT operating partnership units | 594 | 0
Net income available for common unit holders, diluted | $ 157,271 | $ 61,439
Weighted average number of common units, Basic | 86,040 | 85,472
DownREIT operating partnership units | 528 | 0
Weighted average common units outstanding, diluted | 86,662 | 85,472
Net income available for common unit holders, Basic | $ 1.82 | $ 0.72
Net income available for common unit holders, Diluted | $ 1.81 | $ 0.72
5.417% Series 1 Cumulative Convertible Preferred Shares, (stated at liquidation preference $25 per share), 392,878 shares issued and outstanding |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |
Add: Dividends on 5.417% Series 1 Cumulative Convertible Preferred Shares | $ 133 | $ 0
5.417% Series 1 Cumulative Convertible Preferred Shares | 94 | 0
Preferred Units | Federal Realty OP LP |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |
Add: Dividends on 5.417% Series 1 Cumulative Convertible Preferred Units | $ 133 | $ 0
5.417% Series 1 Cumulative Convertible Preferred Units | 94 | 0

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