Net Income Per Common Share and Net Income Per Common Unit - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Convertible units | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Antidilutive securities excluded from computation of earnings per share, amount (in shares) | 2,183,962 | 2,263,171 | 2,205,360 | 2,284,941 |
| Income allocated to convertible OP Units | $ 2.1 | $ 7.8 | $ 5.8 | $ 15.1 |
| Stock options | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Antidilutive securities excluded from computation of earnings per share, amount (in shares) | 250,512 | 250,512 | 316,883 | 234,727 |
| Stock options | Essex Portfolio, L.P. | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Antidilutive securities excluded from computation of earnings per share, amount (in shares) | 250,512 | 250,512 | 316,883 | 234,727 |