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Net Income Per Common Share and Net Income Per Common Unit - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
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) | 2,306,953 | 2,258,812
Income allocated to convertible OP Units | $ 7.3 | $ 9.6
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) | 177,196 |
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) | 177,196 | 395,585

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