EPLP - Condensed Consolidated Statements of Capital (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	$ 103,735	$ 172,724	$ 282,872	$ 617,028
Reversal of unrealized gains upon the sale of marketable debt securities, net	(17)	(17)	(43)	(17)
Change in fair value of derivatives and amortization of swap settlements	20,068	(4,050)	23,569	(17,571)
Change in fair value of marketable debt securities, net	(1,125)	114	(1,418)	201
Issuance of common units under:
General partner’s stock based compensation, net	4,334	(41)	4,427	8,370
Sale of common stock, net	16,274	(179)	16,215	(280)
Retirement of common stock, net			(61,915)
Changes in the redemption value of redeemable noncontrolling interest	1,304	3,176	2,194	1,103
Distributions to noncontrolling interest	(8,024)	(8,192)	(24,041)	(24,677)
Redemptions	(30)	(4,919)	(1,592)	(13,475)
Total
Increase (Decrease) in Partners' Capital [Roll Forward]
Reversal of unrealized gains upon the sale of marketable debt securities, net	(17)	(16)	(43)	(16)
Change in fair value of derivatives and amortization of swap settlements	19,406	(3,913)	22,791	(16,977)
Change in fair value of marketable debt securities, net	(1,087)	110	(1,369)	194
Noncontrolling Interest
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	5,666	8,103	16,155	27,935
Reversal of unrealized gains upon the sale of marketable debt securities, net		(1)		(1)
Change in fair value of derivatives and amortization of swap settlements	662	(137)	778	(594)
Change in fair value of marketable debt securities, net	(38)	4	(49)	7
Issuance of common units under:
Changes in the redemption value of redeemable noncontrolling interest	84	160	362	(211)
Distributions to noncontrolling interest	(8,024)	(8,192)	(24,041)	(24,677)
Redemptions	(1)	(479)	(127)	(15,830)
Essex Portfolio, L.P.
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning	5,485,516	5,805,914	5,708,632	5,720,390
Net income	103,735	172,724	282,872	617,028
Reversal of unrealized gains upon the sale of marketable debt securities, net	(17)	(17)	(43)	(17)
Change in fair value of derivatives and amortization of swap settlements	20,068	(4,050)	23,569	(17,571)
Change in fair value of marketable debt securities, net	(1,125)	114	(1,418)	201
Issuance of common units under:
General partner’s stock based compensation, net	4,334	(41)	4,427	8,370
Sale of common stock, net	16,274	(179)	16,215	(280)
Equity-based compensation costs	4,072	2,607	10,262	7,021
Retirement of common stock, net			(61,915)
Changes in the redemption value of redeemable noncontrolling interest	1,304	3,176	2,194	1,103
Changes in noncontrolling interest from acquisition			0
Distributions to noncontrolling interest	(2,368)	(2,392)	(7,072)	(7,209)
Redemptions	(30)	(4,919)	(1,592)	(13,475)
Distributions declared	(172,309)	(171,410)	(516,677)	(514,034)
Balance at period end	$ 5,459,454	5,801,527	$ 5,459,454	5,801,527
Essex Portfolio, L.P. | Total
Increase (Decrease) in Partners' Capital [Roll Forward]
Reversal of unrealized gains upon the sale of marketable debt securities, net		$ (17)		$ (17)
Essex Portfolio, L.P. | Common Equity | General Partner
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning (in shares)	64,268,000	64,404,000	64,442,000	64,280,000
Balance at period beginning	$ 5,313,949	$ 5,623,574	$ 5,535,325	$ 5,512,391
Net income	$ 98,069	164,621	$ 266,717	$ 589,093
Issuance of common units under:
General partner’s stock based compensation, net (in shares)	17,000		30,000	49,000
General partner’s stock based compensation, net	$ 4,334	(41)	$ 4,427	$ 8,370
Sale of common stock, net (in shares)	53,000		53,000
Sale of common stock, net	$ 16,274	(179)	$ 16,215	(280)
Equity-based compensation costs	3,938	2,519	$ 9,924	6,783
Retirement of common stock, net (in shares)			(254,000)
Retirement of common stock, net			$ (61,915)
Changes in the redemption value and redemptions of redeemable noncontrolling interest (in shares)			67,000
Changes in the redemption value of redeemable noncontrolling interest	1,220	3,016	$ 1,832	$ 1,314
Changes in noncontrolling interest from acquisition			(250)
Redemptions (in shares)				75,000
Redemptions	(29)	(4,440)	(1,465)	$ 2,355
Distributions declared	$ (166,653)	$ (165,610)	$ (499,708)	$ (496,566)
Balance at period end (in shares)	64,338,000	64,404,000	64,338,000	64,404,000
Balance at period end	$ 5,271,102	$ 5,623,460	$ 5,271,102	$ 5,623,460
Essex Portfolio, L.P. | Common Equity | Limited Partners
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning (in shares)	2,184,000	2,256,000	2,250,000	2,331,000
Balance at period beginning	$ 56,998	$ 64,809	$ 61,876	$ 73,418
Net income	3,330	5,767	9,122	20,827
Issuance of common units under:
Equity-based compensation costs	134	88	$ 338	238
Changes in the redemption value and redemptions of redeemable noncontrolling interest (in shares)			(67,000)
Changes in the redemption value of redeemable noncontrolling interest	91	(124)	$ 301	$ (434)
Changes in noncontrolling interest from acquisition (in shares)			1,000
Changes in noncontrolling interest from acquisition			$ 250
Redemptions (in shares)				(75,000)
Redemptions	0		(21)	$ (11,841)
Distributions declared	$ (5,656)	$ (5,800)	$ (16,969)	$ (17,468)
Balance at period end (in shares)	2,184,000	2,256,000	2,184,000	2,256,000
Balance at period end	$ 54,897	$ 64,740	$ 54,897	$ 64,740
Essex Portfolio, L.P. | Total
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning	13,320	15,995	10,138	29,429
Reversal of unrealized gains upon the sale of marketable debt securities, net	(17)		(43)
Change in fair value of derivatives and amortization of swap settlements	20,068	(4,050)	23,569	(17,571)
Change in fair value of marketable debt securities, net	(1,125)	114	(1,418)	201
Issuance of common units under:
Balance at period end	32,246	12,042	32,246	12,042
Essex Portfolio, L.P. | Noncontrolling Interest
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning	101,249	101,536	101,293	105,152
Net income	2,336	2,336	7,033	7,108
Issuance of common units under:
Changes in the redemption value of redeemable noncontrolling interest	(7)	284	61	223
Distributions to noncontrolling interest	(2,368)	(2,392)	(7,072)	(7,209)
Redemptions	(1)	(479)	(106)	(3,989)
Balance at period end	$ 101,209	$ 101,285	$ 101,209	$ 101,285