EPLP - Condensed Consolidated Statements of Capital for the three and six months ended June 30, 2023 and 2022 (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	$ 105,756	$ 61,690	$ 267,350	$ 140,065
Change in fair value of derivatives and amortization of swap settlements	15,386	11,812	5,092	31,895
Change in fair value of marketable debt securities, net		(102)		296
Issuance of common units under:
General partner's stock based compensation, net	0
Sale of common stock by general partner, net	(53)	(66)	(125)	(207)
Retirement of common units, net		(60,830)	(95,657)	(60,830)
Changes in the redemption value of redeemable noncontrolling interest	(1,147)	6,295	(4,205)	1,223
Contributions from noncontrolling interest				125
Distributions to noncontrolling interest	(8,056)	(7,622)	(16,033)	(15,241)
Redemptions	(436)	(2,335)	(609)	(2,361)
Noncontrolling interest
Issuance of common units under:
Contributions from noncontrolling interest				125
Essex Portfolio, L.P.
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning	5,796,857	6,138,207	5,895,116	6,176,508
Net income	105,756	61,690	267,350	140,065
Change in fair value of derivatives and amortization of swap settlements	15,386	11,812	5,092	31,895
Change in fair value of marketable debt securities, net		(102)		296
Issuance of common units under:
General partner's stock based compensation, net		172	0	17,039
Sale of common stock by general partner, net	(53)	(66)	(125)	(207)
Equity based compensation costs	1,982	2,662	7,646	5,125
Retirement of common units, net		(60,830)	(95,657)	(60,830)
Changes in the redemption value of redeemable noncontrolling interest	(1,147)	6,295	(4,205)	1,223
Contributions from noncontrolling interest				125
Distributions to noncontrolling interest	(2,835)	(2,621)	(5,590)	(5,218)
Redemptions	(436)	(2,335)	(609)	(2,361)
Distributions declared	(153,505)	(148,299)	(307,013)	(297,075)
Balance at period end	$ 5,762,005	$ 6,006,585	$ 5,762,005	$ 6,006,585
Essex Portfolio, L.P. | Common Equity | General Partner
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning (in shares)	64,182	65,332	64,605	65,248
Balance at period beginning	$ 5,582,259	$ 5,942,746	$ 5,669,906	$ 5,999,155
Net income	$ 99,620	$ 57,054	$ 253,152	$ 130,308
Issuance of common units under:
General partner's stock based compensation, net (in shares)	1	3	3	87
General partner's stock based compensation, net		$ 172		$ 17,039
Sale of common stock by general partner, net	$ (53)	(66)	$ (125)	(207)
Equity based compensation costs	1,915	$ 2,572	$ 7,387	$ 4,952
Retirement of common units, net (in shares)		(219)	(437)	(219)
Retirement of common units, net		$ (60,830)	$ (95,657)	$ (60,830)
Changes in the redemption value of redeemable noncontrolling interest	(1,160)	$ 6,065	$ (4,087)	$ 1,051
Redemptions (in shares)		8	12	8
Redemptions	(404)	$ (2,122)	$ (113)	$ (2,123)
Distributions declared	$ (148,284)	$ (143,298)	$ (296,570)	$ (287,052)
Balance at period end (in shares)	64,183	65,124	64,183	65,124
Balance at period end	$ 5,533,893	$ 5,802,293	$ 5,533,893	$ 5,802,293
Essex Portfolio, L.P. | Common Equity | Limited Partners
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning (in shares)	2,261	2,282	2,272	2,282
Balance at period beginning	$ 51,385	$ 54,112	$ 51,454	$ 56,502
Net income	3,506	1,990	8,910	4,553
Issuance of common units under:
Equity based compensation costs	67	90	259	173
Changes in the redemption value of redeemable noncontrolling interest	$ (26)	$ 136	$ (132)	$ 122
Redemptions (in shares)	(1)	(9)	(12)	(9)
Redemptions	$ (7)	$ (94)	$ (344)	$ (94)
Distributions declared	$ (5,221)	$ (5,001)	$ (10,443)	$ (10,023)
Balance at period end (in shares)	2,260	2,273	2,260	2,273
Balance at period end	$ 49,704	$ 51,233	$ 49,704	$ 51,233
Essex Portfolio, L.P. | Accumulated other comprehensive income (loss), net
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning	41,716	18,677	52,010	(1,804)
Change in fair value of derivatives and amortization of swap settlements	15,386	11,812	5,092	31,895
Change in fair value of marketable debt securities, net		(102)		296
Issuance of common units under:
Balance at period end	57,102	30,387	57,102	30,387
Essex Portfolio, L.P. | Noncontrolling interest
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at period beginning	121,497	122,672	121,746	122,655
Net income	2,630	2,646	5,288	5,204
Issuance of common units under:
Changes in the redemption value of redeemable noncontrolling interest	39	94	14	50
Distributions to noncontrolling interest	(2,835)	(2,621)	(5,590)	(5,218)
Redemptions	(25)	(119)	(152)	(144)
Balance at period end	$ 121,306	$ 122,672	$ 121,306	$ 122,672