v3.26.1
Earnings Per Share And Unit (Schedule Of Earnings Per Share) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Net income $ 88,553 $ 159,956 $ 249,623 $ 226,534
Less: Preferred share dividends (2,008) (2,008) (4,016) (4,016)
Less: Income from operations attributable to noncontrolling interests (2,851) (4,040) (4,822) (6,850)
Less: Earnings Allocated To Unvested Shares (342) (520) (841) (727)
Net income available for common shareholders, basic 83,352 153,388 239,944 214,941
Add: Income attributable to downREIT operating partnership units 0 601 1,187 1,268
Net income available for common shareholders, diluted $ 83,352 $ 154,122 $ 241,131 $ 216,209
Weighted average number of common shares, Basic 86,183 85,969 86,112 85,722
DownREIT operating partnership units 0 548 527 578
Weighted average number of common shares, Diluted 86,183 86,611 86,639 86,300
Net income available for common shareholders, Basic $ 0.97 $ 1.78 $ 2.79 $ 2.51
Net income available for common shareholders, Diluted $ 0.97 $ 1.78 $ 2.78 $ 2.51
Federal Realty OP LP        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Net income $ 88,553 $ 159,956 $ 249,623 $ 226,534
Less: Preferred unit distributions (2,008) (2,008) (4,016) (4,016)
Less: Income from operations attributable to noncontrolling interests (2,851) (4,040) (4,822) (6,850)
Less: Earnings allocated to unvested units (342) (520) (841) (727)
Net income available for common unit holders, basic 83,352 153,388 239,944 214,941
Add: Income attributable to downREIT operating partnership units 0 601 1,187 1,268
Net income available for common unit holders, diluted $ 83,352 $ 154,122 $ 241,131 $ 216,209
Weighted average number of common units, Basic 86,183 85,969 86,112 85,722
DownREIT operating partnership units 0 548 527 578
Weighted average common units outstanding, diluted 86,183 86,611 86,639 86,300
Net income available for common unit holders, Basic $ 0.97 $ 1.78 $ 2.79 $ 2.51
Net income available for common unit holders, Diluted $ 0.97 $ 1.78 $ 2.78 $ 2.51
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 $ 0 $ 133 $ 0 $ 0
5.417% Series 1 Cumulative Convertible Preferred Shares 0 94 0 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 $ 0 $ 133 $ 0 $ 0
5.417% Series 1 Cumulative Convertible Preferred Units 0 94 0 0