EPLP - Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Cash flows from operating activities:
Net income	$ 61,690	$ 69,615	$ 140,065	$ 246,564
Adjustments to reconcile net income to net cash provided by operating activities:
Straight-lined rents			4,570	5,825
Depreciation and amortization			268,050	257,323
Amortization of discount and debt financing costs, net			3,332	6,311
Loss on sale of marketable securities			(12,430)	(2,499)
Income from early redemption of notes receivable			0	(4,747)
Provision for credit losses			63	(107)
Unrealized losses (gains) on equity securities recognized through income			46,441	(16,681)
Earnings from co-investments			(12,771)	(35,259)
Operating distributions from co-investments			67,834	57,364
Accrued interest from notes and other receivables			(6,974)	(8,530)
Gain on the sale of real estate and land			0	(100,096)
Equity-based compensation			4,788	3,776
Loss on early retirement of debt, net	0	16,465	0	18,982
Gain on remeasurement of co-investment	0	(2,260)	0	(2,260)
Changes in operating assets and liabilities:
Prepaid expenses, receivables, operating lease right-of-use assets, and other assets			15,406	(5,348)
Accounts payable, accrued liabilities, and operating lease liabilities			(10,887)	3,209
Other liabilities			2,058	4,244
Net cash provided by operating activities			509,545	428,071
Additions to real estate:
Acquisitions of real estate and acquisition related capital expenditures, net of cash acquired			(223)	(18,418)
Redevelopment			(47,674)	(19,981)
Development acquisitions of and additions to real estate under development			(12,862)	(34,640)
Capital expenditures on rental properties			(62,576)	(49,044)
Investments in notes receivable			(136,513)	(71,613)
Collections of notes and other receivables			303,088	36,244
Proceeds from insurance for property losses			135	117
Proceeds from dispositions of real estate			0	243,365
Contributions to co-investments			(96,187)	(160,719)
Changes in refundable deposits			(16,318)	(968)
Purchases of marketable securities			(12,168)	(23,509)
Sales and maturities of marketable securities			30,025	14,931
Non-operating distributions from co-investments			152,924	78,600
Net cash provided by (used in) investing activities			101,651	(5,635)
Cash flows from financing activities:
Proceeds from unsecured debt and mortgage notes			0	745,505
Payments on unsecured debt and mortgage notes			(1,820)	(951,727)
Proceeds from lines of credit			670,758	453,359
Repayments of lines of credit			(948,840)	(368,359)
Retirement of common stock			(60,830)	(9,172)
Additions to deferred charges			0	(6,361)
Payments related to debt prepayment penalties			0	(18,342)
Net proceeds from issuance of common stock			(207)	(84)
Net proceeds from stock options exercised			19,255	2,275
Payments related to tax withholding for share-based compensation			(2,216)	(5,445)
Contributions from noncontrolling interest			125	1,900
Distributions to noncontrolling interest			(14,858)	(14,787)
Redemption of noncontrolling interest			(2,361)	(2,318)
Redemption of redeemable noncontrolling interests			230	3,808
Common stock dividends paid			(280,147)	(270,937)
Net cash used in financing activities			(621,371)	(448,301)
Net decrease in unrestricted and restricted cash and cash equivalents			(10,175)	(25,865)
Unrestricted and restricted cash and cash equivalents at beginning of period			58,638	84,041	$ 84,041
Unrestricted and restricted cash and cash equivalents at end of period	48,463	58,176	48,463	58,176	58,638
Supplemental disclosure of cash flow information:
Cash paid for interest (net of $1.5 million and $3.8 million capitalized in 2022 and 2021, respectively)			97,688	96,541
Operating cash flows from operating leases			3,480	5,316
Supplemental disclosure of noncash investing and financing activities:
Transfers between real estate under development and rental properties, net			96,887	218,835
Transfer from real estate under development to co-investments			1,827	1,337
Reclassifications (from) to redeemable noncontrolling interest from general and limited partner capital and noncontrolling interest			(1,223)	6,593
Essex Portfolio, L.P.
Cash flows from operating activities:
Net income	61,690	69,615	140,065	246,564
Adjustments to reconcile net income to net cash provided by operating activities:
Straight-lined rents			4,570	5,825
Depreciation and amortization			268,050	257,323
Amortization of discount and debt financing costs, net			3,332	6,311
Loss on sale of marketable securities			(12,430)	(2,499)
Income from early redemption of notes receivable			0	(4,747)
Provision for credit losses			63	(107)
Unrealized losses (gains) on equity securities recognized through income			46,441	(16,681)
Earnings from co-investments			(12,771)	(35,259)
Operating distributions from co-investments			67,834	57,364
Accrued interest from notes and other receivables			(6,974)	(8,530)
Gain on the sale of real estate and land			0	(100,096)
Equity-based compensation			4,788	3,776
Loss on early retirement of debt, net	0	16,465	0	18,982
Gain on remeasurement of co-investment	0	(2,260)	0	(2,260)
Changes in operating assets and liabilities:
Prepaid expenses, receivables, operating lease right-of-use assets, and other assets			15,406	(5,348)
Accounts payable, accrued liabilities, and operating lease liabilities			(10,887)	3,209
Other liabilities			2,058	4,244
Net cash provided by operating activities			509,545	428,071
Additions to real estate:
Acquisitions of real estate and acquisition related capital expenditures, net of cash acquired			(223)	(18,418)
Redevelopment			(47,674)	(19,981)
Development acquisitions of and additions to real estate under development			(12,862)	(34,640)
Capital expenditures on rental properties			(62,576)	(49,044)
Investments in notes receivable			(136,513)	(71,613)
Collections of notes and other receivables			303,088	36,244
Proceeds from insurance for property losses			135	117
Proceeds from dispositions of real estate			0	243,365
Contributions to co-investments			(96,187)	(160,719)
Changes in refundable deposits			(16,318)	(968)
Purchases of marketable securities			(12,168)	(23,509)
Sales and maturities of marketable securities			30,025	14,931
Non-operating distributions from co-investments			152,924	78,600
Net cash provided by (used in) investing activities			101,651	(5,635)
Cash flows from financing activities:
Proceeds from unsecured debt and mortgage notes			0	745,505
Payments on unsecured debt and mortgage notes			(1,820)	(951,727)
Proceeds from lines of credit			670,758	453,359
Repayments of lines of credit			(948,840)	(368,359)
Retirement of common stock			(60,830)	(9,172)
Additions to deferred charges			0	(6,361)
Payments related to debt prepayment penalties			0	(18,342)
Net proceeds from issuance of common stock			(207)	(84)
Net proceeds from stock options exercised			19,255	2,275
Payments related to tax withholding for share-based compensation			(2,216)	(5,445)
Contributions from noncontrolling interest			125	1,900
Distributions to noncontrolling interest			(4,197)	(4,238)
Redemption of noncontrolling interest			(2,361)	(2,318)
Redemption of redeemable noncontrolling interests			230	3,808
Common stock dividends paid			(290,808)	(281,486)
Net cash used in financing activities			(621,371)	(448,301)
Net decrease in unrestricted and restricted cash and cash equivalents			(10,175)	(25,865)
Unrestricted and restricted cash and cash equivalents at beginning of period			58,638	84,041	84,041
Unrestricted and restricted cash and cash equivalents at end of period	$ 48,463	$ 58,176	48,463	58,176	$ 58,638
Supplemental disclosure of cash flow information:
Cash paid for interest (net of $1.5 million and $3.8 million capitalized in 2022 and 2021, respectively)			97,688	96,541
Operating cash flows from operating leases			3,480	5,316
Supplemental disclosure of noncash investing and financing activities:
Transfers between real estate under development and rental properties, net			96,887	218,835
Transfer from real estate under development to co-investments			1,827	1,337
Reclassifications (from) to redeemable noncontrolling interest from general and limited partner capital and noncontrolling interest			$ (1,223)	$ 6,593