EPLP - Condensed Consolidated Statements of Capital (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	$ 112,208	$ 212,778
Change in fair value of derivatives and amortization of swap settlements	358	(9,372)
Change in fair value of marketable debt securities, net	(224)	17
Issuance of common units under:
General partner’s stock based compensation, net	(219)	5,509
Retirement of common stock, net	(50,213)
Changes in the redemption value and redemptions of redeemable noncontrolling interest	2,475	(3,527)
Distributions to noncontrolling interest	(8,017)	(8,300)
Redemptions		(8,556)
Essex Portfolio, L.P.
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning	5,708,632	5,720,390
Net income	112,208	212,778
Reversal of unrealized gains upon the sale of marketable debt securities, net	(13)
Change in fair value of derivatives and amortization of swap settlements	358	(9,372)
Change in fair value of marketable debt securities, net	(224)	17
Issuance of common units under:
General partner’s stock based compensation, net	(219)	5,509
Equity based compensation costs	2,950	2,055
Retirement of common stock, net	(50,213)
Changes in the redemption value and redemptions of redeemable noncontrolling interest	2,475	(3,527)
Changes in noncontrolling interest from acquisition	0
Distributions to noncontrolling interest	(2,359)	(2,431)
Redemptions		(8,556)
Distributions declared	(172,239)	(171,288)
Balance at period end	$ 5,601,356	$ 5,745,575
Essex Portfolio, L.P. | Common Equity | General Partner
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning (in shares)	64,442	64,280
Balance at period beginning	$ 5,535,325	$ 5,512,391
Net income	$ 106,186	$ 203,110
Issuance of common units under:
General partner’s stock based compensation, net (in shares)	7	30
General partner’s stock based compensation, net	$ (219)	$ 5,509
Equity based compensation costs	$ 2,851	1,985
Retirement of common stock, net (in shares)	(206)
Retirement of common stock, net	$ (50,213)
Changes in the redemption value and redemptions of redeemable noncontrolling interest (in shares)	67
Changes in the redemption value and redemptions of redeemable noncontrolling interest	$ 2,324	$ (3,175)
Changes in noncontrolling interest from acquisition	(250)
Redemptions (in shares)		48
Redemptions		$ (20)
Distributions declared	$ (166,581)	$ (165,419)
Balance at period end (in shares)	64,310	64,358
Balance at period end	$ 5,429,423	$ 5,554,381
Essex Portfolio, L.P. | Common Equity | Limited Partners
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning (in shares)	2,250	2,331
Balance at period beginning	$ 61,876	$ 73,418
Net income	3,669	7,279
Issuance of common units under:
Equity based compensation costs	$ 99	70
Changes in the redemption value and redemptions of redeemable noncontrolling interest (in shares)	(67)
Changes in the redemption value and redemptions of redeemable noncontrolling interest	$ 160	$ (219)
Changes in noncontrolling interest from acquisition (in shares)	1
Changes in noncontrolling interest from acquisition	$ 250
Redemptions (in shares)		48
Redemptions		$ (5,026)
Distributions declared	$ (5,658)	$ (5,869)
Balance at period end (in shares)	2,184	2,283
Balance at period end	$ 60,396	$ 69,653
Essex Portfolio, L.P. | Accumulated other comprehensive income, net
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning	10,138	29,429
Reversal of unrealized gains upon the sale of marketable debt securities, net	(13)
Change in fair value of derivatives and amortization of swap settlements	358	(9,372)
Change in fair value of marketable debt securities, net	(224)	17
Issuance of common units under:
Balance at period end	10,259	20,074
Essex Portfolio, L.P. | Noncontrolling interest
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning	101,293	105,152
Net income	2,353	2,389
Issuance of common units under:
Changes in the redemption value and redemptions of redeemable noncontrolling interest	(9)	(133)
Distributions to noncontrolling interest	(2,359)	(2,431)
Redemptions		(3,510)
Balance at period end	$ 101,278	$ 101,467