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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Related party receivables | $ 9.9 | $ 41.2
Common stock, par value (in dollars per share) | $ 0.0001 | $ 0.0001
Common stock, shares authorized (in shares) | 670,000,000 | 670,000,000
Common stock, shares issued (in shares) | 66,044,441 | 66,054,399
Common stock, shares outstanding (in shares) | 66,044,441 | 66,054,399
Essex Portfolio, L.P. [Member] |  |
Related party receivables | $ 9.9 | $ 41.2
Essex Portfolio, L.P. [Member] | General Partner [Member] |  |
Common stock, shares issued (in shares) | 66,044,441 | 66,054,399
Common stock, shares outstanding (in shares) | 66,044,441 | 66,054,399
Essex Portfolio, L.P. [Member] | Limited Partners [Member] |  |
Common stock, shares issued (in shares) | 2,273,413 | 2,268,114
Common stock, shares outstanding (in shares) | 2,273,413 | 2,268,114

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