EPLP - Condensed Consolidated Statements of Capital for the three and nine months ended September 30, 2022 and 2021 (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	$ 98,700	$ 125,002	$ 238,765	$ 371,566
Change in fair value of derivatives and amortization of swap settlements	26,189	728	58,084	5,607
Change in fair value of marketable debt securities, net	(92)	99	204	356
Issuance of common stock under:
Sale of common stock by general partner, net	(107)	(118)	(314)	(202)
Retirement of common units, net	(97,121)		(157,951)	(9,172)
Changes in the redemption value of redeemable noncontrolling interest	3,727	1,673	4,950	(4,922)
Contributions from noncontrolling interest			125	1,900
Distributions to noncontrolling interest	(7,748)	(7,257)	(22,989)	(22,114)
Redemptions	(8,568)	(6,089)	(10,929)	(8,407)
Accumulated Other Comprehensive Loss, Net
Increase (Decrease) in Partners' Capital [Roll Forward]
Change in fair value of derivatives and amortization of swap settlements	25,304	704	56,124	5,417
Change in fair value of marketable debt securities, net	(89)	96	197	344
Noncontrolling interest
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	5,858	6,612	15,615	19,886
Change in fair value of derivatives and amortization of swap settlements	885	24	1,960	190
Change in fair value of marketable debt securities, net	(3)	3	7	12
Issuance of common stock under:
Changes in the redemption value of redeemable noncontrolling interest	532	420	704	577
Contributions from noncontrolling interest			125	1,900
Distributions to noncontrolling interest	(7,748)	(7,257)	(22,989)	(22,114)
Redemptions	(563)	(438)	(801)	(889)
Essex Portfolio, L.P.
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning	6,006,585	6,136,703	6,176,508	6,183,192
Net income	98,700	125,002	238,765	371,566
Change in fair value of derivatives and amortization of swap settlements	26,189	728	58,084	5,607
Change in fair value of marketable debt securities, net	(92)	99	204	356
Issuance of common stock under:
General partner's stock based compensation, net	155	15,572	17,194	12,402
Sale of common stock by general partner, net	(107)	(118)	(314)	(202)
Equity based compensation costs	1,957	1,628	7,082	9,495
Retirement of common units, net	(97,121)		(157,951)	(9,172)
Changes in the redemption value of redeemable noncontrolling interest	3,727	1,673	4,950	(4,922)
Contributions from noncontrolling interest			125	1,900
Distributions to noncontrolling interest	(2,747)	(2,488)	(7,965)	(7,756)
Redemptions	(8,568)	(6,089)	(10,929)	(8,407)
Distributions declared	(147,481)	(140,811)	(444,556)	(422,160)
Balance at period end	$ 5,881,197	$ 6,131,899	$ 5,881,197	$ 6,131,899
Essex Portfolio, L.P. | Common Equity | General Partner
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning (in shares)	65,124	65,004	65,248	64,999
Balance at period beginning	$ 5,802,293	$ 5,963,223	$ 5,999,155	$ 6,015,139
Net income	$ 92,842	$ 118,390	$ 223,150	$ 351,680
Issuance of common stock under:
General partner's stock based compensation, net (in shares)	1	68	88	112
General partner's stock based compensation, net	$ 155	$ 15,572	$ 17,194	$ 12,402
Sale of common stock by general partner, net	(107)	(118)	(314)	(202)
Equity based compensation costs	$ 1,891	1,573	$ 6,843	$ 9,172
Retirement of common units, net (in shares)	(372)		(591)	(40)
Retirement of common units, net	$ (97,121)		$ (157,951)	$ (9,172)
Changes in the redemption value of redeemable noncontrolling interest	3,195	$ 1,253	$ 4,246	$ (5,499)
Redemptions (in shares)		9	8	10
Redemptions	(8,005)	$ (5,651)	$ (10,128)	$ (7,518)
Distributions declared	$ (142,480)	$ (136,042)	$ (429,532)	$ (407,802)
Balance at period end (in shares)	64,753	65,081	64,753	65,081
Balance at period end	$ 5,652,663	$ 5,958,200	$ 5,652,663	$ 5,958,200
Essex Portfolio, L.P. | Common Equity | Limited Partners
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning (in shares)	2,273	2,294	2,282	2,295
Balance at period beginning	$ 51,233	$ 56,950	$ 56,502	$ 58,184
Net income	3,247	4,168	7,800	12,403
Issuance of common stock under:
Equity based compensation costs	66	55	239	323
Changes in the redemption value of redeemable noncontrolling interest	$ 172	$ 141	$ 294	$ 129
Redemptions (in shares)	(1)	(12)	(10)	(13)
Redemptions		$ (160)	$ (94)	$ (296)
Distributions declared	$ (5,001)	$ (4,769)	$ (15,024)	$ (14,358)
Balance at period end (in shares)	2,272	2,282	2,272	2,282
Balance at period end	$ 49,717	$ 56,385	$ 49,717	$ 56,385
Essex Portfolio, L.P. | Accumulated Other Comprehensive Loss, Net
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning	30,387	(6,167)	(1,804)	(11,303)
Change in fair value of derivatives and amortization of swap settlements	26,189	728	58,084	5,607
Change in fair value of marketable debt securities, net	(92)	99	204	356
Issuance of common stock under:
Balance at period end	56,484	(5,340)	56,484	(5,340)
Essex Portfolio, L.P. | Noncontrolling interest
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning	122,672	122,697	122,655	121,172
Net income	2,611	2,444	7,815	7,483
Issuance of common stock under:
Changes in the redemption value of redeemable noncontrolling interest	360	279	410	448
Contributions from noncontrolling interest			125	1,900
Distributions to noncontrolling interest	(2,747)	(2,488)	(7,965)	(7,756)
Redemptions	(563)	(278)	(707)	(593)
Balance at period end	$ 122,333	$ 122,654	$ 122,333	$ 122,654