Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Rental properties:
Land and land improvements	$ 2,766,344	$ 2,701,356
Buildings and improvements	11,180,806	10,664,745
Total rental properties	13,947,150	13,366,101
Less: accumulated depreciation	(3,567,632)	(3,209,548)
Net real estate	10,379,518	10,156,553
Real estate under development	562,338	454,629
Co-investments	1,413,861	1,300,140
Total real estate	12,355,717	11,911,322
Cash and cash equivalents-unrestricted	74,031	134,465
Cash and cash equivalents-restricted	17,695	16,930
Marketable securities	216,894	209,545
Notes and other receivables (includes related party receivables of $144.6 million and $11.1 million as of September 30, 2019 and December 31, 2018, respectively)	216,541	71,895
Operating lease right-of-use assets	75,478	0
Prepaid expenses and other assets	41,536	39,439
Total assets	12,997,892	12,383,596
LIABILITIES AND EQUITY/CAPITAL
Unsecured debt, net	4,686,171	3,799,316
Mortgage notes payable, net	1,141,970	1,806,626
Lines of credit	220,000	0
Accounts payable and accrued liabilities	193,341	127,086
Construction payable	53,214	59,345
Dividends/Distributions payable	135,492	128,529
Operating lease liabilities	77,495
Other liabilities	36,128	33,375
Total liabilities	6,543,811	5,954,277
Commitments and contingencies
Redeemable noncontrolling interest	39,077	35,475
Equity/Capital:
Common stock; $0.0001 par value, 670,000,000 shares authorized; 66,081,635 and 65,890,322 shares issued and outstanding, respectively	7	7
Additional paid-in capital	7,131,642	7,093,079
Distributions in excess of accumulated earnings	(887,521)	(812,796)
Limited Partners:
Accumulated other comprehensive loss, net	(19,028)	(13,217)
Total stockholders' equity	6,225,100	6,267,073
Noncontrolling interest	189,904	126,771
Total equity	6,415,004	6,393,844
Total liabilities and equity/capital	12,997,892	12,383,596
Essex Portfolio, L.P. [Member]
Rental properties:
Land and land improvements	2,766,344	2,701,356
Buildings and improvements	11,180,806	10,664,745
Total rental properties	13,947,150	13,366,101
Less: accumulated depreciation	(3,567,632)	(3,209,548)
Net real estate	10,379,518	10,156,553
Real estate under development	562,338	454,629
Co-investments	1,413,861	1,300,140
Total real estate	12,355,717	11,911,322
Cash and cash equivalents-unrestricted	74,031	134,465
Cash and cash equivalents-restricted	17,695	16,930
Marketable securities	216,894	209,545
Notes and other receivables (includes related party receivables of $144.6 million and $11.1 million as of September 30, 2019 and December 31, 2018, respectively)	216,541	71,895
Operating lease right-of-use assets	75,478
Prepaid expenses and other assets	41,536	39,439
Total assets	12,997,892	12,383,596
LIABILITIES AND EQUITY/CAPITAL
Unsecured debt, net	4,686,171	3,799,316
Mortgage notes payable, net	1,141,970	1,806,626
Lines of credit	220,000	0
Accounts payable and accrued liabilities	193,341	127,086
Construction payable	53,214	59,345
Dividends/Distributions payable	135,492	128,529
Operating lease liabilities	77,495
Other liabilities	36,128	33,375
Total liabilities	6,543,811	5,954,277
Commitments and contingencies
Redeemable noncontrolling interest	39,077	35,475
General Partner:
Common equity (66,081,635 and 65,890,322 units issued and outstanding, respectively)	6,244,128	6,280,290
Limited Partners:
Common equity (2,298,237 and 2,305,389 units issued and outstanding, respectively)	57,002	59,061
Accumulated other comprehensive loss, net	(15,752)	(9,738)
Total partners' capital	6,285,378	6,329,613
Noncontrolling interest	129,626	64,231
Total capital	6,415,004	6,393,844
Total liabilities and equity/capital	$ 12,997,892	$ 12,383,596