EPLP - Condensed Consolidated Statements of Capital (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	$ 231,526	$ 98,986	$ 444,304	$ 384,126
Change in fair value of derivatives and amortization of swap settlements	(4,149)	(2,487)	(13,521)	5,508
Change in fair value of marketable debt securities	70		87
Issuance of common units under:
General partner’s stock based compensation, net	2,902	0	8,411	962
Sale of common stock by general partner, net	(101)	(105)	(101)	(113)
Changes in the redemption value of redeemable noncontrolling interest	1,454	(1,697)	(2,073)	(1,684)
Distributions to noncontrolling interest	(8,185)	(8,663)	(16,485)	(17,075)
Redemptions	0		(8,556)	(279)
Essex Portfolio, L.P.
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning	5,745,575	5,723,753	5,720,390	5,593,978
Net income	231,526	98,986	444,304	384,126
Change in fair value of derivatives and amortization of swap settlements	(4,149)	(2,487)	(13,521)	5,508
Change in fair value of marketable debt securities	70		87
Issuance of common units under:
General partner’s stock based compensation, net	2,902		8,411	962
Sale of common stock by general partner, net	(101)	(105)	(101)	(113)
Equity based compensation costs	2,359	2,048	4,414	3,743
Changes in the redemption value of redeemable noncontrolling interest	1,454	(1,697)	(2,073)	(1,684)
Distributions to noncontrolling interest	(2,386)	(3,130)	(4,817)	(6,005)
Redemptions	0		(8,556)	(279)
Distributions declared	(171,336)	(162,868)	(342,624)	(325,736)
Balance at period end	$ 5,805,914	$ 5,654,500	$ 5,805,914	$ 5,654,500
Essex Portfolio, L.P. | Common Equity | General Partner
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning (in shares)	64,358	64,209	64,280	64,203
Balance at period beginning	$ 5,554,381	$ 5,506,752	$ 5,512,391	$ 5,389,190
Net income	$ 221,362	$ 92,914	$ 424,472	$ 365,645
Issuance of common units under:
General partner’s stock based compensation, net (in shares)	19	1	49	7
General partner’s stock based compensation, net	$ 2,902		$ 8,411	$ 962
Sale of common stock by general partner, net	(101)	$ (105)	(101)	(113)
Equity based compensation costs	2,279	1,979	4,264	3,616
Changes in the redemption value of redeemable noncontrolling interest	$ 1,473	(1,443)	$ (1,702)	(1,623)
Redemptions (in shares)	27		75
Redemptions	$ 6,815		$ 6,795	(249)
Distributions declared	$ (165,537)	$ (157,335)	$ (330,956)	$ (314,666)
Balance at period end (in shares)	64,404	64,210	64,404	64,210
Balance at period end	$ 5,623,574	$ 5,442,762	$ 5,623,574	$ 5,442,762
Essex Portfolio, L.P. | Common Equity | Limited Partners
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning (in shares)	2,283	2,259	2,331	2,259
Balance at period beginning	$ 69,653	$ 49,276	$ 73,418	$ 44,991
Net income	7,781	3,270	15,060	12,869
Issuance of common units under:
Equity based compensation costs	80	69	150	127
Changes in the redemption value of redeemable noncontrolling interest	$ (91)	(263)	$ (310)	(98)
Redemptions (in shares)	(27)		(75)
Redemptions	$ (6,815)		$ (11,841)
Distributions declared	$ (5,799)	$ (5,533)	$ (11,668)	$ (11,070)
Balance at period end (in shares)	2,256	2,259	2,256	2,259
Balance at period end	$ 64,809	$ 46,819	$ 64,809	$ 46,819
Essex Portfolio, L.P. | Accumulated other comprehensive income, net
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning	20,074	46,641	29,429	38,646
Change in fair value of derivatives and amortization of swap settlements	(4,149)	(2,487)	(13,521)	5,508
Change in fair value of marketable debt securities	70		87
Issuance of common units under:
Balance at period end	15,995	44,154	15,995	44,154
Essex Portfolio, L.P. | Noncontrolling interest
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning	101,467	121,084	105,152	121,151
Net income	2,383	2,802	4,772	5,612
Issuance of common units under:
Changes in the redemption value of redeemable noncontrolling interest	72	9	(61)	37
Distributions to noncontrolling interest	(2,386)	(3,130)	(4,817)	(6,005)
Redemptions	0		(3,510)	(30)
Balance at period end	$ 101,536	$ 120,765	$ 101,536	$ 120,765