Significant Transactions During the Three Months Ended March 31, 2025 and Subsequent Events - Acquisition of Real Estate Interests (Details) - Apartment Building $ in Millions	3 Months Ended
	Mar. 31, 2025 USD ($) apartment
Other Commitments [Line Items]
Apartment Homes | apartment	619
Contract Price at Pro Rata Share | $	$ 345.5
The Plaza
Other Commitments [Line Items]
Apartment Homes | apartment	307
Essex Ownership Percentage	100.00%
Contract Price at Pro Rata Share | $	$ 161.4
One Hundred Grand
Other Commitments [Line Items]
Apartment Homes | apartment	166
Contract Price at Pro Rata Share | $	$ 105.3
ROEN Menlo Park
Other Commitments [Line Items]
Apartment Homes | apartment	146
Essex Ownership Percentage	100.00%
Contract Price at Pro Rata Share | $	$ 78.8