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Net Income Per Common Share and Net Income Per Common Unit (Tables) | 3 Months Ended
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Mar. 31, 2025
Net Income Per Share and Net Income Per Unit [Line Items] |
Schedule of Net Income Per Common Share | Basic and diluted income per share was calculated as follows for the periods presented ($ in thousands, except per share amounts):
| Three Months Ended March 31, 2025 |  | Three Months Ended March 31, 2024
| Income |  | Weighted- average Common Shares |  | Per Common Share Amount |  | Income |  | Weighted- average Common Shares |  | Per Common Share Amount
Basic: |  |  |  |  |  |  |  |  |  |  |
Net income available to common stockholders | $ | 203,110 |  |  | 64,314,899 |  |  | $ | 3.16 |  |  | $ | 272,731 |  |  | 64,205,086 |  |  | $ | 4.25 |
Effect of Dilutive Securities: |  |  |  |  |  |  |  |  |  |  |
Stock options | — |  |  | 35,000 |  |  |  |  | — |  |  | 6,920 |  |  |
Diluted: |  |  |  |  |  |  |  |  |  |  |
Net income available to common stockholders | $ | 203,110 |  |  | 64,349,899 |  |  | $ | 3.16 |  |  | $ | 272,731 |  |  | 64,212,006 |  |  | $ | 4.25 |
Essex Portfolio, L.P. |
Net Income Per Share and Net Income Per Unit [Line Items] |
Schedule of Net Income Per Common Share | Basic and diluted income per unit was calculated as follows for the periods presented ($ in thousands, except per unit amounts):
| Three Months Ended March 31, 2025 |  | Three Months Ended March 31, 2024
| Income |  | Weighted- average Common Units |  | Per Common Unit Amount |  | Income |  | Weighted- average Common Units |  | Per Common Unit Amount
Basic: |  |  |  |  |  |  |  |  |  |  |
Net income available to common unitholders | $ | 210,389 |  |  | 66,621,852 |  |  | $ | 3.16 |  |  | $ | 282,330 |  |  | 66,463,899 |  |  | $ | 4.25 |
Effect of Dilutive Securities: |  |  |  |  |  |  |  |  |  |  |
Stock options | — |  |  | 35,000 |  |  |  |  | — |  |  | 6,920 |  |  |
Diluted: |  |  |  |  |  |  |  |  |  |  |
Net income available to common unitholders | $ | 210,389 |  |  | 66,656,852 |  |  | $ | 3.16 |  |  | $ | 282,330 |  |  | 66,470,819 |  |  | $ | 4.25 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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