Organization and Basis of Presentation - Schedule of Changes in Accumulated Other Comprehensive Income, Net by Component (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2024 USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at period beginning	$ 5,593,978
Balance at period end	5,628,360
Accumulated Other Comprehensive Loss, Net
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at period beginning	33,556
Balance at period end	18,174
Change in fair value and amortization of swap settlements
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at period beginning	33,556
Other comprehensive loss before reclassification	(15,421)
Amounts reclassified from accumulated other comprehensive income	39
Other comprehensive loss	(15,382)
Balance at period end	18,174
Essex Portfolio, L.P. | Change in fair value and amortization of swap settlements
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at period beginning	38,646
Other comprehensive loss before reclassification	(15,965)
Amounts reclassified from accumulated other comprehensive income	40
Other comprehensive loss	(15,925)
Balance at period end	$ 22,721