Organization and Basis of Presentation - Schedule of Changes in Accumulated Other Comprehensive Income, Net by Component (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at period beginning	$ 5,720,390
Balance at period end	5,745,575
Accumulated Other Comprehensive Loss, Net
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at period beginning	24,655
Other comprehensive loss before reclassification	(9,037)
Amounts reclassified from accumulated other comprehensive income	2
Other comprehensive loss	(9,035)
Balance at period end	15,620
Change in fair value and amortization of swap settlements
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at period beginning	24,655
Other comprehensive loss before reclassification	(9,053)
Amounts reclassified from accumulated other comprehensive income	2
Other comprehensive loss	(9,051)
Balance at period end	15,604
Unrealized gain on available for sale debt securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at period beginning	0
Other comprehensive loss before reclassification	16
Amounts reclassified from accumulated other comprehensive income	0
Other comprehensive loss	16
Balance at period end	16
Essex Portfolio, L.P. | Accumulated Other Comprehensive Loss, Net
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at period beginning	29,429
Other comprehensive loss before reclassification	(9,357)
Amounts reclassified from accumulated other comprehensive income	2
Other comprehensive loss	(9,355)
Balance at period end	20,074
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	29,429
Other comprehensive loss before reclassification	(9,374)
Amounts reclassified from accumulated other comprehensive income	2
Other comprehensive loss	(9,372)
Balance at period end	20,057
Essex Portfolio, L.P. | Unrealized gain on available for sale debt securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at period beginning	0
Other comprehensive loss before reclassification	17
Amounts reclassified from accumulated other comprehensive income	0
Other comprehensive loss	17
Balance at period end	$ 17