$ESS
ESSEX PROPERTY TRUST, INC. Stock $ess

$ess Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000092052221000015 Filed on February 19, 2021

Income Statement

Concept	2019 Q4	2018 Q4	2018
Revenue	$375.4M	$353.2M	$1.400B
YoY Change	6.29%	2.35%	2.65%
Cost Of Revenue	$101.5M	$98.50M	$385.3M
YoY Change	3.05%	-4.92%	-4.98%
Gross Profit	$273.9M	$254.7M	$1.015B
YoY Change	7.54%	5.51%	5.87%
Gross Profit Margin	72.96%	72.11%	72.48%
Selling, General & Admin	$23.80M	$24.70M	$84.50M
YoY Change	-3.64%	130.84%	104.11%
% of Gross Profit	8.69%	9.7%	8.33%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$123.0M	$120.6M	$479.9M
YoY Change	1.99%	2.2%	2.35%
% of Gross Profit	44.91%	47.35%	47.29%
Operating Expenses	$146.7M	$145.2M	$564.4M
YoY Change	1.03%	12.82%	10.6%
Operating Profit	$127.2M	$109.5M	$512.0M
YoY Change	16.16%	-2.84%	8.26%
Interest Expense	$21.80M	-$25.80M	$220.5M
YoY Change	-184.5%	2766.67%	-1.08%
% of Operating Profit	17.14%	-23.56%	43.07%
Other Income/Expense, Net	$0.00
YoY Change
Pretax Income	$135.2M	$124.4M	$413.6M
YoY Change	8.68%	13.4%	-9.69%
Income Tax		$0.00	$0.00
% Of Pretax Income		0.0%	0.0%
Net Earnings	$135.2M	$124.4M	$390.2M
YoY Change	8.63%	13.48%	-9.91%
Net Earnings / Revenue	36.01%	35.23%	27.87%
Basic Earnings Per Share	$1.95	$1.78	$5.91
Diluted Earnings Per Share	$1.95	$1.78	$5.90
COMMON SHARES
Basic Shares Outstanding	66.08M shares	66.07M shares	66.04M shares
Diluted Shares Outstanding			66.09M shares

Balance Sheet

Concept	2019 Q4	2018 Q4	2018
SHORT-TERM ASSETS
Cash & Short-Term Investments	$214.3M	$344.0M	$134.0M
YoY Change	-37.71%	46.62%	197.78%
Cash & Equivalents	$70.09M	$134.5M	$134.0M
Short-Term Investments	$144.2M	$209.5M
Other Short-Term Assets	$41.00M	$39.00M	$39.00M
YoY Change	5.13%	0.0%	0.0%
Inventory	$546.0M	$455.0M	$455.0M
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$672.0M	$641.0M	$641.0M
YoY Change	4.84%	33.26%	33.26%
LONG-TERM ASSETS
Property, Plant & Equipment	$10.42B	$10.16B	$10.16B
YoY Change	2.62%	-4.12%	-4.12%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$1.480B	$1.510B	$1.510B
YoY Change	-1.99%	12.18%	12.18%
Other Assets	$11.00M	$17.00M	$17.00M
YoY Change	-35.29%	0.0%	0.0%
Total Long-Term Assets	$12.03B	$11.74B	$11.74B
YoY Change	2.48%	-2.26%	-2.26%
TOTAL ASSETS
Total Short-Term Assets	$672.0M	$641.0M	$641.0M
Total Long-Term Assets	$12.03B	$11.74B	$11.74B
Total Assets	$12.71B	$12.38B	$12.38B
YoY Change	2.6%	-0.9%	-0.9%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$158.0M	$127.0M	$127.0M
YoY Change	24.41%	-0.78%	-0.78%
Accrued Expenses	$77.00M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$419.0M	$315.0M	$315.0M
YoY Change	33.02%	4.65%	4.65%
LONG-TERM LIABILITIES
Long-Term Debt	$5.809B	$5.606B	$5.606B
YoY Change	3.62%	-1.46%	-1.46%
Other Long-Term Liabilities	$37.00M	$33.00M	$33.00M
YoY Change	12.12%	-52.86%	-52.86%
Total Long-Term Liabilities	$5.846B	$5.639B	$5.639B
YoY Change	3.67%	-2.08%	-2.08%
TOTAL LIABILITIES
Total Short-Term Liabilities	$419.0M	$315.0M	$315.0M
Total Long-Term Liabilities	$5.846B	$5.639B	$5.639B
Total Liabilities	$6.264B	$5.954B	$6.117B
YoY Change	5.21%	-1.74%	-1.62%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock	$7.000K	$7.000K
YoY Change	0.0%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$6.220B	$6.267B	$6.267B
YoY Change
Total Liabilities & Shareholders Equity	$12.71B	$12.38B	$12.38B
YoY Change	2.6%	-0.9%	-0.9%

Cashflow Statement

Concept	2019 Q4	2018 Q4	2018
OPERATING ACTIVITIES
Net Income	$135.2M	$124.4M	$390.2M
YoY Change	8.63%	13.48%	-9.91%
Depreciation, Depletion And Amortization	$123.0M	$120.6M	$479.9M
YoY Change	1.99%	2.2%	2.35%
Cash From Operating Activities	$212.2M	$145.5M	$826.6M
YoY Change	45.84%	2.03%	7.4%
INVESTING ACTIVITIES
Capital Expenditures	-$115.6M	-$103.6M	-$352.8M
YoY Change	11.58%	12.0%	-27.51%
Acquisitions
YoY Change
Other Investing Activities	$292.3M	$179.5M	$292.9M
YoY Change	62.84%	78.43%	-460.27%
Cash From Investing Activities	$176.6M	$75.90M	-$59.89M
YoY Change	132.67%	837.04%	-89.45%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$52.15M
YoY Change			-158.56%
Debt Paid & Issued, Net			$230.4M
YoY Change			-58.94%
Cash From Financing Activities	-399.4M	-244.6M	-$676.4M
YoY Change	63.29%	282.79%	117.6%
NET CHANGE
Cash From Operating Activities	212.2M	145.5M	$826.6M
Cash From Investing Activities	176.6M	75.90M	-$59.89M
Cash From Financing Activities	-399.4M	-244.6M	-$676.4M
Net Change In Cash	-10.60M	-23.20M	$90.27M
YoY Change	-54.31%	-126.73%	-182.68%
FREE CASH FLOW
Cash From Operating Activities	$212.2M	$145.5M	$826.6M
Capital Expenditures	-$115.6M	-$103.6M	-$352.8M
Free Cash Flow	$327.8M	$249.1M	$1.179B
YoY Change	31.59%	5.95%	-6.13%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
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CY2020	dei	Entity File Number EntityFileNumber	001-13106
CY2020	dei	Entity Registrant Name EntityRegistrantName	ESSEX PROPERTY TRUST, INC.
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	77-0369576
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	1100 Park Place, Suite 200
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	San Mateo
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
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CY2020	dei	Security12b Title Security12bTitle	Common Stock, $.0001 par value (Essex Property Trust, Inc.)
CY2020	dei	Trading Symbol TradingSymbol	ESS
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CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	25162000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	23446000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	568870000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	439286000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	390153000	USD
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.69
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.67
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.91
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	65454057	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	65840422	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	66041058	shares
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.69
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.66
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.90
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65564982	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65939455	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	66085089	shares
CY2020	us-gaap	Profit Loss ProfitLoss	599332000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	464448000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	413599000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-4148000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-2948000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	7824000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-3338000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-1824000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-61000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	281000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-118000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	32000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-13000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-871000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-875000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	7719000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	598461000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	463573000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	421318000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	30432000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	25133000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	23702000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	568029000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	438440000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	397616000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6396825000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	413599000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-13000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	7824000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	29233000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	281000	USD
CY2019	ess	Stock Option And Restricted Stock Plans StockOptionAndRestrictedStockPlans	33779000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-118000	USD
CY2018	ess	Stock Option And Restricted Stock Plans StockOptionAndRestrictedStockPlans	6213000	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	-919000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	12851000	USD
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	51233000	USD
CY2018	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-1164000	USD
CY2018	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	7919000	USD
CY2018	ess	Redemptions Of Noncontrolling Interest RedemptionsOfNoncontrollingInterest	1333000	USD
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	7.44
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	491108000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6393844000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	464448000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	32000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-1824000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-2948000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	72539000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	12283000	USD
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	56989000	USD
CY2019	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-2008000	USD
CY2019	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	65472000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	28493000	USD
CY2019	ess	Redemptions Of Noncontrolling Interest RedemptionsOfNoncontrollingInterest	36568000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	7.80
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	514109000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6403504000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	599332000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-3338000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-4148000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-61000	USD
CY2020	ess	Stock Option And Restricted Stock Plans StockOptionAndRestrictedStockPlans	9201000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	-296000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	12913000	USD
CY2020	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	269315000	USD
CY2020	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	4299000	USD
CY2020	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	1349000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	31367000	USD
CY2020	ess	Redemptions Of Noncontrolling Interest RedemptionsOfNoncontrollingInterest	3113000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	8.31
CY2020	us-gaap	Dividends Common Stock DividendsCommonStock	542254000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6183192000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	599332000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	464448000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	413599000	USD
CY2020	us-gaap	Straight Line Rent StraightLineRent	19426000	USD
CY2019	us-gaap	Straight Line Rent StraightLineRent	1218000	USD
CY2018	us-gaap	Straight Line Rent StraightLineRent	347000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	525497000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	483750000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	479884000	USD
CY2020	us-gaap	Investment Income Amortization Of Discount InvestmentIncomeAmortizationOfDiscount	19075000	USD
CY2019	us-gaap	Investment Income Amortization Of Discount InvestmentIncomeAmortizationOfDiscount	28491000	USD
CY2018	us-gaap	Investment Income Amortization Of Discount InvestmentIncomeAmortizationOfDiscount	17637000	USD
CY2020	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	6674000	USD
CY2019	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	5689000	USD
CY2018	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	-2587000	USD
CY2020	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	2131000	USD
CY2019	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	1271000	USD
CY2018	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	737000	USD
CY2020	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	687000	USD
CY2019	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	0	USD
CY2018	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	0	USD
CY2020	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	12515000	USD
CY2019	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	5710000	USD
CY2018	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-5159000	USD
CY2020	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	2225000	USD
CY2019	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	51097000	USD
CY2018	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	10569000	USD
CY2020	ess	Gain Loss From Equity Method Investments GainLossFromEquityMethodInvestments	64287000	USD
CY2019	ess	Gain Loss From Equity Method Investments GainLossFromEquityMethodInvestments	61039000	USD
CY2018	ess	Gain Loss From Equity Method Investments GainLossFromEquityMethodInvestments	78563000	USD
CY2020	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	74419000	USD
CY2019	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	99277000	USD
CY2018	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	99593000	USD
CY2020	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	3683000	USD
CY2019	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	6012000	USD
CY2018	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	5436000	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1825000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	7105000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	8157000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	7010000	USD
CY2020	ess	Companys Share Of Gain On Sales Of Real Estate CompanysShareOfGainOnSalesOfRealEstate	64967000	USD
CY2019	ess	Companys Share Of Gain On Sales Of Real Estate CompanysShareOfGainOnSalesOfRealEstate	-3164000	USD
CY2018	ess	Companys Share Of Gain On Sales Of Real Estate CompanysShareOfGainOnSalesOfRealEstate	61861000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	7135000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-22883000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	3717000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2020	ess	Gain On Remeasurement Of Co Investment GainOnRemeasurementOfCoInvestment	234694000	USD
CY2019	ess	Gain On Remeasurement Of Co Investment GainOnRemeasurementOfCoInvestment	31535000	USD
CY2018	ess	Gain On Remeasurement Of Co Investment GainOnRemeasurementOfCoInvestment	1253000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	3730000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-6969000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	856000	USD
CY2020	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	-10382000	USD
CY2019	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	29551000	USD
CY2020	ess	Revenue Generating Capital Expenditures RevenueGeneratingCapitalExpenditures	90085000	USD
CY2019	ess	Revenue Generating Capital Expenditures RevenueGeneratingCapitalExpenditures	101689000	USD
CY2018	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	-145000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	749000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	2206000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	1175000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	803108000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	919079000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	826554000	USD
CY2020	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	460421000	USD
CY2019	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	133825000	USD
CY2018	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	15311000	USD
CY2020	ess	Redevelopment Expenditures RedevelopmentExpenditures	48980000	USD
CY2019	ess	Redevelopment Expenditures RedevelopmentExpenditures	70295000	USD
CY2018	ess	Redevelopment Expenditures RedevelopmentExpenditures	73000000	USD
CY2020	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	108781000	USD
CY2019	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	158234000	USD
CY2018	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	182772000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1045290000	USD
CY2018	ess	Revenue Generating Capital Expenditures RevenueGeneratingCapitalExpenditures	81684000	USD
CY2020	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	135343000	USD
CY2019	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	231400000	USD
CY2018	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	0	USD
CY2020	us-gaap	Proceeds From Sale And Collection Of Receivables ProceedsFromSaleAndCollectionOfReceivables	98711000	USD
CY2019	us-gaap	Proceeds From Sale And Collection Of Receivables ProceedsFromSaleAndCollectionOfReceivables	168720000	USD
CY2018	us-gaap	Proceeds From Sale And Collection Of Receivables ProceedsFromSaleAndCollectionOfReceivables	29500000	USD
CY2020	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	723000	USD
CY2019	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	3734000	USD
CY2018	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	1408000	USD
CY2020	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	339165000	USD
CY2019	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	23214000	USD
CY2018	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	347587000	USD
CY2020	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	114017000	USD
CY2019	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	402284000	USD
CY2018	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	162437000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	84041000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	81094000	USD
CY2019	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	46458000	USD
CY2020	us-gaap	Increase Decrease In Restricted Cash And Investments For Operating Activities IncreaseDecreaseInRestrictedCashAndInvestmentsForOperatingActivities	-96000	USD
CY2019	us-gaap	Increase Decrease In Restricted Cash And Investments For Operating Activities IncreaseDecreaseInRestrictedCashAndInvestmentsForOperatingActivities	-5000	USD
CY2018	us-gaap	Increase Decrease In Restricted Cash And Investments For Operating Activities IncreaseDecreaseInRestrictedCashAndInvestmentsForOperatingActivities	414000	USD
CY2020	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	83379000	USD
CY2018	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	37952000	USD
CY2020	ess	Payments For Proceeds From Sales And Maturities Of Marketable Securities PaymentsForProceedsFromSalesAndMaturitiesOfMarketableSecurities	-113465000	USD
CY2019	ess	Payments For Proceeds From Sales And Maturities Of Marketable Securities PaymentsForProceedsFromSalesAndMaturitiesOfMarketableSecurities	-147531000	USD
CY2018	ess	Payments For Proceeds From Sales And Maturities Of Marketable Securities PaymentsForProceedsFromSalesAndMaturitiesOfMarketableSecurities	-31521000	USD
CY2020	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	71946000	USD
CY2019	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	273290000	USD
CY2018	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	83661000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-416900000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-527691000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-59893000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1452808000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	298773000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	916209000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1026616000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	230398000	USD
CY2020	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	1038426000	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	1939213000	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	742961000	USD
CY2020	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	1093426000	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	1884213000	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	921961000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	269315000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	56989000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	51233000	USD
CY2020	us-gaap	Payment Of Financing And Stock Issuance Costs PaymentOfFinancingAndStockIssuanceCosts	13772000	USD
CY2019	us-gaap	Payment Of Financing And Stock Issuance Costs PaymentOfFinancingAndStockIssuanceCosts	10898000	USD
CY2018	us-gaap	Payment Of Financing And Stock Issuance Costs PaymentOfFinancingAndStockIssuanceCosts	4250000	USD
CY2020	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	19605000	USD
CY2019	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	1406000	USD
CY2018	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-296000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	72539000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-919000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	14865000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	37467000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	6213000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	5664000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3688000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	869000	USD
CY2020	us-gaap	Payments Of Distributions To Affiliates PaymentsOfDistributionsToAffiliates	30990000	USD
CY2019	us-gaap	Payments Of Distributions To Affiliates PaymentsOfDistributionsToAffiliates	27993000	USD
CY2018	us-gaap	Payments Of Distributions To Affiliates PaymentsOfDistributionsToAffiliates	29050000	USD
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	3113000	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	36568000	USD
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	1333000	USD
CY2020	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	872000	USD
CY2019	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	73000	USD
CY2018	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	144000	USD
CY2020	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	536098000	USD
CY2019	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	507754000	USD
CY2018	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	484182000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-383261000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-461689000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-676392000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	2947000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-70301000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	90269000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	81094000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	151395000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	61126000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	194418000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	151395000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	211732000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	203803000	USD
CY2020	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	14615000	USD
CY2019	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	24169000	USD
CY2018	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	18708000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	6892000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	6811000	USD
CY2018	us-gaap	Operating Lease Payments OperatingLeasePayments	0	USD
CY2020	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
CY2019	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
CY2018	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	7919000	USD
CY2020	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2019	us-gaap	Stock Issued1 StockIssued1	65472000	USD
CY2018	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2020	ess	Transfer From Real Estate Under Development To Rental Properties TransferFromRealEstateUnderDevelopmentToRentalProperties	253039000	USD
CY2019	ess	Transfer From Real Estate Under Development To Rental Properties TransferFromRealEstateUnderDevelopmentToRentalProperties	19812000	USD
CY2018	ess	Transfer From Real Estate Under Development To Rental Properties TransferFromRealEstateUnderDevelopmentToRentalProperties	100415000	USD
CY2020	ess	Transfer From Real Estate Under Development To Co Investments TransferFromRealEstateUnderDevelopmentToCoInvestments	1739000	USD
CY2019	ess	Transfer From Real Estate Under Development To Co Investments TransferFromRealEstateUnderDevelopmentToCoInvestments	671000	USD
CY2018	ess	Transfer From Real Estate Under Development To Co Investments TransferFromRealEstateUnderDevelopmentToCoInvestments	853000	USD
CY2020	ess	Reclassification From To Redeemable Noncontrolling Interest ReclassificationFromToRedeemableNoncontrollingInterest	-4299000	USD
CY2019	ess	Reclassification From To Redeemable Noncontrolling Interest ReclassificationFromToRedeemableNoncontrollingInterest	2008000	USD
CY2018	ess	Reclassification From To Redeemable Noncontrolling Interest ReclassificationFromToRedeemableNoncontrollingInterest	1165000	USD
CY2020	ess	Redemption Of Redeemable Noncontrolling Interest Decrease In Note Receivable RedemptionOfRedeemableNoncontrollingInterestDecreaseInNoteReceivable	0	USD
CY2019	ess	Redemption Of Redeemable Noncontrolling Interest Decrease In Note Receivable RedemptionOfRedeemableNoncontrollingInterestDecreaseInNoteReceivable	0	USD
CY2018	ess	Redemption Of Redeemable Noncontrolling Interest Decrease In Note Receivable RedemptionOfRedeemableNoncontrollingInterestDecreaseInNoteReceivable	4751000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	77645000	USD
CY2018	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2020	ess	Initial Recognition In Operating Lease Liabilities InitialRecognitionInOperatingLeaseLiabilities	0	USD
CY2019	ess	Initial Recognition In Operating Lease Liabilities InitialRecognitionInOperatingLeaseLiabilities	79693000	USD
CY2018	ess	Initial Recognition In Operating Lease Liabilities InitialRecognitionInOperatingLeaseLiabilities	0	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	143006000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	45804000	USD
CY2020	ess	Repayment Of Mortgage Note From New Financing Proceeds RepaymentOfMortgageNoteFromNewFinancingProceeds	0	USD
CY2019	ess	Repayment Of Mortgage Note From New Financing Proceeds RepaymentOfMortgageNoteFromNewFinancingProceeds	0	USD
CY2018	ess	Repayment Of Mortgage Note From New Financing Proceeds RepaymentOfMortgageNoteFromNewFinancingProceeds	52000000	USD
CY2019Q4	ess	Noncontrolling Interest Operating Partnership NoncontrollingInterestOperatingPartnership	0.034
CY2020Q4	ess	Noncontrolling Interest Operating Partnership NoncontrollingInterestOperatingPartnership	0.034
CY2020Q4	ess	Operating Partnership Units Outstanding OperatingPartnershipUnitsOutstanding	2294760	shares
CY2019Q4	ess	Operating Partnership Units Outstanding OperatingPartnershipUnitsOutstanding	2301653	shares
CY2020Q4	ess	Redemption Value Of Operating Partnership Units Outstanding RedemptionValueOfOperatingPartnershipUnitsOutstanding	544800000	USD
CY2019Q4	ess	Redemption Value Of Operating Partnership Units Outstanding RedemptionValueOfOperatingPartnershipUnitsOutstanding	692500000	USD
CY2020Q4	ess	Number Of Apartment Communities Owned NumberOfApartmentCommunitiesOwned	246	community
CY2020Q4	ess	Aggregate Apartment Units Owned AggregateApartmentUnitsOwned	60272	apartment
CY2020Q4	ess	Ownership Interests Number Of Commercial Buildings OwnershipInterestsNumberOfCommercialBuildings	1	building
CY2020Q4	ess	Ownership Interests Number Of Consolidated Projects OwnershipInterestsNumberOfConsolidatedProjects	3	project
CY2020Q4	ess	Ownership Interests Number Of Unconsolidated Projects OwnershipInterestsNumberOfUnconsolidatedProjects	3	investment
CY2019Q4	ess	Noncontrolling Interest Operating Partnership NoncontrollingInterestOperatingPartnership	0.034
CY2020Q4	ess	Noncontrolling Interest Operating Partnership NoncontrollingInterestOperatingPartnership	0.034
CY2020	ess	Thresholdusefullifeofassetsforcapitalization Thresholdusefullifeofassetsforcapitalization	P1Y
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	4700000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1200000	USD
CY2020Q4	ess	Numberof Assets Held For Sale NumberofAssetsHeldForSale	2	community
CY2019Q4	ess	Numberof Assets Held For Sale NumberofAssetsHeldForSale	0	community
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1800000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2019	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	11500000	USD
CY2020	ess	Leasetermsminimum Leasetermsminimum	P9M
CY2020	ess	Leasetermsmaximum Leasetermsmaximum	P12M
CY2020	ess	Originalmaturitieshighlyliquidinvestmentstermclassificationascashequivalentsmaximum Originalmaturitieshighlyliquidinvestmentstermclassificationascashequivalentsmaximum	P3M
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	73629000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	70087000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	134465000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	10412000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	11007000	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	16930000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	84041000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	81094000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	151395000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	3600000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	2500000	USD
CY2020Q4	ess	Marketable Securities Amortized Cost MarketableSecuritiesAmortizedCost	131770000	USD
CY2020Q4	ess	Marketable Securities Accumulated Gross Unrealized Gain Loss Before Tax MarketableSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax	15998000	USD
CY2020Q4	us-gaap	Marketable Securities MarketableSecurities	147768000	USD
CY2020Q4	ess	Marketable Securities Allowance For Credit Loss MarketableSecuritiesAllowanceForCreditLoss	0	USD
CY2019Q4	ess	Marketable Securities Amortized Cost MarketableSecuritiesAmortizedCost	140649000	USD
CY2019Q4	ess	Marketable Securities Accumulated Gross Unrealized Gain Loss Before Tax MarketableSecuritiesAccumulatedGrossUnrealizedGainLossBeforeTax	3544000	USD
CY2019Q4	us-gaap	Marketable Securities MarketableSecurities	144193000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Mortgage Backed Securities Mbs ProceedsFromMaturitiesPrepaymentsAndCallsOfMortgageBackedSecuritiesMBS	91700000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Mortgage Backed Securities Mbs ProceedsFromMaturitiesPrepaymentsAndCallsOfMortgageBackedSecuritiesMBS	83100000	USD
CY2020	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	11800000	USD
CY2019	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	7000000.0	USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	113500000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	147500000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	31500000	USD
CY2020	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	2100000	USD
CY2019	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	1300000	USD
CY2018	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	700000	USD
CY2020	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	11800000	USD
CY2020	ess	Capitalized Internal Costs Related To Development And Redevelopment Projects CapitalizedInternalCostsRelatedToDevelopmentAndRedevelopmentProjects	31400000	USD
CY2019	ess	Capitalized Internal Costs Related To Development And Redevelopment Projects CapitalizedInternalCostsRelatedToDevelopmentAndRedevelopmentProjects	42100000	USD
CY2018	ess	Capitalized Internal Costs Related To Development And Redevelopment Projects CapitalizedInternalCostsRelatedToDevelopmentAndRedevelopmentProjects	37300000	USD
CY2020Q4	ess	Fixed Rate Debt Carrying Amount FixedRateDebtCarryingAmount	5500000000	USD
CY2019Q4	ess	Fixed Rate Debt Carrying Amount FixedRateDebtCarryingAmount	5200000000	USD
CY2020Q4	ess	Fixed Rate Debt Fair Value FixedRateDebtFairValue	6000000000.0	USD
CY2019Q4	ess	Fixed Rate Debt Fair Value FixedRateDebtFairValue	5400000000	USD
CY2020Q4	ess	Variable Rate Debt Carrying Amount VariableRateDebtCarryingAmount	775100000	USD
CY2019Q4	ess	Variable Rate Debt Carrying Amount VariableRateDebtCarryingAmount	660400000	USD
CY2020Q4	ess	Variable Rate Debt Fair Value VariableRateDebtFairValue	770100000	USD
CY2019Q4	ess	Variable Rate Debt Fair Value VariableRateDebtFairValue	655800000	USD
CY2019Q4	us-gaap	Proceeds From Maturities Prepayments And Calls Of Mortgage Backed Securities Mbs ProceedsFromMaturitiesPrepaymentsAndCallsOfMortgageBackedSecuritiesMBS	83100000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Mortgage Backed Securities Mbs ProceedsFromMaturitiesPrepaymentsAndCallsOfMortgageBackedSecuritiesMBS	91700000	USD
CY2020Q4	us-gaap	Mortgage Backed Securities Available For Sale Fair Value Disclosure MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure	0	USD
CY2019Q4	us-gaap	Mortgage Backed Securities Available For Sale Fair Value Disclosure MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure	72700000	USD
CY2020	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	4215000	USD
CY2020	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	5056000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-841000	USD
CY2020Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	32200000	USD
CY2019Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	37400000	USD
CY2019Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	37410000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	35475000	USD
CY2017Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	39206000	USD
CY2020	ess	Noncontrolling Interest Reset Of Prior Year Redemptions NoncontrollingInterestResetOfPriorYearRedemptions	-4299000	USD
CY2019	ess	Noncontrolling Interest Reset Of Prior Year Redemptions NoncontrollingInterestResetOfPriorYearRedemptions	2008000	USD
CY2018	ess	Noncontrolling Interest Reset Of Prior Year Redemptions NoncontrollingInterestResetOfPriorYearRedemptions	1164000	USD
CY2020	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	872000	USD
CY2019	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	73000	USD
CY2018	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	4895000	USD
CY2020Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	32239000	USD
CY2019Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	37410000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	35475000	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	Accounting EstimatesThe preparation of consolidated financial statements, in accordance with U.S. GAAP, requires the Company to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and related disclosures of contingent assets and liabilities. On an ongoing basis, the Company evaluates its estimates, including those related to acquiring, developing and assessing the carrying values of its real estate portfolio, its investments in and advances to joint ventures and affiliates, and its notes receivable. The Company bases its estimates on historical experience, current market conditions, and on various other assumptions that are believed to be reasonable under the circumstances. Actual results may vary from those estimates and those estimates could be different under different assumptions or conditions.
CY2020Q4	ess	Number Of Downreit Limited Partnerships Consolidated By Company NumberOfDownreitLimitedPartnershipsConsolidatedByCompany	17	partnership
CY2020Q4	ess	Number Of Communities Within Downreit Partnerships NumberOfCommunitiesWithinDownreitPartnerships	9	community
CY2020Q4	ess	Variable Interest Entity Number Of Consolidated Coinvestments Determined To Be Variable Interest Entities VariableInterestEntityNumberOfConsolidatedCoinvestmentsDeterminedToBeVariableInterestEntities	5	investment
CY2019Q4	ess	Number Of Downreit Limited Partnerships Consolidated By Company NumberOfDownreitLimitedPartnershipsConsolidatedByCompany	17	partnership
CY2019Q4	ess	Number Of Communities Within Downreit Partnerships NumberOfCommunitiesWithinDownreitPartnerships	9	community
CY2019Q4	ess	Variable Interest Entity Number Of Consolidated Coinvestments Determined To Be Variable Interest Entities VariableInterestEntityNumberOfConsolidatedCoinvestmentsDeterminedToBeVariableInterestEntities	6	investment
CY2020Q4	ess	Assets Related To Variable Interest Entities Net Intercompany Eliminations AssetsRelatedToVariableInterestEntitiesNetIntercompanyEliminations	898500000	USD
CY2020Q4	ess	Liabilities Related To Variable Interest Entities Net Of Intercompany Eliminations LiabilitiesRelatedToVariableInterestEntitiesNetOfIntercompanyEliminations	326800000	USD
CY2019Q4	ess	Assets Related To Variable Interest Entities Net Intercompany Eliminations AssetsRelatedToVariableInterestEntitiesNetIntercompanyEliminations	1000000000.0	USD
CY2019Q4	ess	Liabilities Related To Variable Interest Entities Net Of Intercompany Eliminations LiabilitiesRelatedToVariableInterestEntitiesNetOfIntercompanyEliminations	364300000	USD
CY2020Q4	us-gaap	Noncontrolling Interest In Variable Interest Entity NoncontrollingInterestInVariableInterestEntity	120800000	USD
CY2019Q4	us-gaap	Noncontrolling Interest In Variable Interest Entity NoncontrollingInterestInVariableInterestEntity	122500000	USD
CY2020Q4	ess	Number Of Communities Within Downreit Partnerships NumberOfCommunitiesWithinDownreitPartnerships	9	community
CY2020Q4	ess	Units Of Limited Partnership Interest Amount UnitsOfLimitedPartnershipInterestAmount	1017460	shares
CY2019Q4	ess	Units Of Limited Partnership Interest Amount UnitsOfLimitedPartnershipInterestAmount	1033907	shares
CY2020Q4	ess	Redemption Value Of Variable Interest Entities RedemptionValueOfVariableInterestEntities	241600000	USD
CY2019Q4	ess	Redemption Value Of Variable Interest Entities RedemptionValueOfVariableInterestEntities	311100000	USD
CY2020Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	32200000	USD
CY2019Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	37400000	USD
CY2020Q4	ess	Redeemable Noncontrolling Interest Equity Carrying Amount Variable Interest Entities RedeemableNoncontrollingInterestEquityCarryingAmountVariableInterestEntities	11900000	USD
CY2019Q4	ess	Redeemable Noncontrolling Interest Equity Carrying Amount Variable Interest Entities RedeemableNoncontrollingInterestEquityCarryingAmountVariableInterestEntities	13000000.0	USD
CY2020Q4	us-gaap	Minority Interest In Limited Partnerships MinorityInterestInLimitedPartnerships	97400000	USD
CY2019Q4	us-gaap	Minority Interest In Limited Partnerships MinorityInterestInLimitedPartnerships	97700000	USD
CY2020	ess	Number Of Units Acquired NumberOfUnitsAcquired	2020	unit
CY2020	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	463400000	USD
CY2019	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	373300000	USD
CY2020Q4	ess	Number Of Apartment Communities Owned NumberOfApartmentCommunitiesOwned	2	apartment
CY2020	ess	Number Of Apartment Units NumberOfApartmentUnits	439	apartment
CY2020Q4	ess	Investments In Distributions In Excess Of Investments In And Advance To Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInDistributionsInExcessOfInvestmentsInAndAdvanceToAffiliatesSubsidiariesAssociatesAndJointVentures	1018010000	USD
CY2019Q4	ess	Investments In Distributions In Excess Of Investments In And Advance To Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInDistributionsInExcessOfInvestmentsInAndAdvanceToAffiliatesSubsidiariesAssociatesAndJointVentures	1335339000	USD
CY2020Q4	ess	Ownership Interests Number Of Consolidated Projects OwnershipInterestsNumberOfConsolidatedProjects	3	project
CY2020Q4	ess	Ownership Interests Number Of Unconsolidated Projects OwnershipInterestsNumberOfUnconsolidatedProjects	3	investment
CY2020Q4	ess	Number Of Units To Be Developed NumberOfUnitsToBeDeveloped	1853	unit
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	9598000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	9527000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	9183000	USD
CY2020	us-gaap	Revenues Revenues	1495748000	USD
CY2019	us-gaap	Revenues Revenues	1460155000	USD
CY2018	us-gaap	Revenues Revenues	1400053000	USD
CY2020Q4	ess	Real Estate Operations Occupancy Threshold For Classification As Stabilized RealEstateOperationsOccupancyThresholdForClassificationAsStabilized	0.90
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	3100000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	3900000	USD
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	800000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	3100000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.23
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.45
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	751000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	0	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	195104000	USD
CY2019Q4	us-gaap	Notes Receivable Net NotesReceivableNet	134365000	USD
CY2020	ess	Management And Other Fees From Affiliates ManagementAndOtherFeesFromAffiliates	11300000	USD
CY2019	ess	Management And Other Fees From Affiliates ManagementAndOtherFeesFromAffiliates	13800000	USD
CY2018	ess	Management And Other Fees From Affiliates ManagementAndOtherFeesFromAffiliates	13900000	USD
CY2020	ess	Related Party Transaction Revenuesfrom Developmentand Redevelopment Fees RelatedPartyTransactionRevenuesfromDevelopmentandRedevelopmentFees	1700000	USD
CY2019	ess	Related Party Transaction Revenuesfrom Developmentand Redevelopment Fees RelatedPartyTransactionRevenuesfromDevelopmentandRedevelopmentFees	4300000	USD
CY2018	ess	Related Party Transaction Revenuesfrom Developmentand Redevelopment Fees RelatedPartyTransactionRevenuesfromDevelopmentandRedevelopmentFees	4800000	USD
CY2017	ess	Equity Method Investment Redeemed Amount EquityMethodInvestmentRedeemedAmount	5000000.0	USD
CY2018	ess	Equity Method Investment Redeemed Amount EquityMethodInvestmentRedeemedAmount	5000000.0	USD
CY2020Q4	us-gaap	Unsecured Debt UnsecuredDebt	5607985000	USD
CY2019Q4	us-gaap	Unsecured Debt UnsecuredDebt	4763206000	USD
CY2020Q4	ess	Unsecured Debt And Line Of Credit UnsecuredDebtAndLineOfCredit	5607985000	USD
CY2019Q4	ess	Unsecured Debt And Line Of Credit UnsecuredDebtAndLineOfCredit	4818206000	USD
CY2020	ess	Line Of Credit Facility Number Of Outstanding Lines LineOfCreditFacilityNumberOfOutstandingLines	2	line_of_credit
CY2019Q4	us-gaap	Senior Notes SeniorNotes	200000000.0	USD
CY2020Q4	us-gaap	Senior Notes SeniorNotes	200000000.0	USD
CY2020	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.044
CY2019	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.044
CY2020Q4	us-gaap	Senior Notes SeniorNotes	200000000	USD
CY2019Q4	us-gaap	Senior Notes SeniorNotes	200000000	USD
CY2020Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	4900000000	USD
CY2019Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	4250000000	USD
CY2020Q4	ess	Lease Liability LeaseLiability	74037000	USD
CY2020	ess	Line Of Credit Facility Number Of Lines Of Credit LineOfCreditFacilityNumberOfLinesOfCredit	2	line_of_credit
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	643550000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	990667000	USD
CY2020	ess	Number Of Properties Securing Mortgage Notes NumberOfPropertiesSecuringMortgageNotes	12	property
CY2019	ess	Number Of Properties Securing Mortgage Notes NumberOfPropertiesSecuringMortgageNotes	24	property
CY2020Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.027
CY2019Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.041
CY2020Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	1800000	USD
CY2019Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	2600000	USD
CY2020	ess	Long Term Debt Monthly Interest Expense LongTermDebtMonthlyInterestExpense	3000000.0	USD
CY2020	ess	Long Term Debt Monthly Principal Amortization LongTermDebtMonthlyPrincipalAmortization	500000	USD
CY2020	ess	Long Term Debt Repayment Of Debt Before The Scheduled Maturity Date Prepayment Penalties LongTermDebtRepaymentOfDebtBeforeTheScheduledMaturityDatePrepaymentPenalties	The prepayment penalty on the majority of the Company’s mortgage notes payable are computed by the greater of (a) 1% of the amount of the principal being prepaid or (b) the present value of the principal being prepaid multiplied by the difference between the interest rate of the mortgage note and the stated yield rate on a U.S. treasury security which generally has an equivalent remaining term as the mortgage note.
CY2020Q4	ess	Lessor Operating Lease Number Of Commercial Buildings Under Lease Agreements LessorOperatingLeaseNumberOfCommercialBuildingsUnderLeaseAgreements	1	building
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	720570000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	34240000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	14971000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	13619000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	11265000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	24855000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	819520000	USD
CY2020	ess	Lessee Operating Lease Office Lease Renewal Term LesseeOperatingLeaseOfficeLeaseRenewalTerm	P5Y
CY2020Q4	ess	Lease Right Of Use Asset LeaseRightOfUseAsset	72143000	USD
CY2019Q4	ess	Lease Right Of Use Asset LeaseRightOfUseAsset	74744000	USD
CY2019Q4	ess	Lease Liability LeaseLiability	76740000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	6749000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	6745000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	1436000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	783000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	432000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	610000	USD
CY2020	us-gaap	Sublease Income SubleaseIncome	438000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	436000	USD
CY2020	us-gaap	Lease Cost LeaseCost	8179000	USD
CY2019	us-gaap	Lease Cost LeaseCost	7702000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	6963000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	6987000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	6962000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	6690000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	6310000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	140417000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	174329000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	100292000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	74037000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P39Y
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P39Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0500
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0499
CY2020Q4	ess	Redemption Value Of Operating Partnership Units Outstanding RedemptionValueOfOperatingPartnershipUnitsOutstanding	544800000	USD
CY2019Q4	ess	Redemption Value Of Operating Partnership Units Outstanding RedemptionValueOfOperatingPartnershipUnitsOutstanding	692500000	USD
CY2020	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	568870000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	65454057	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.69
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	439286000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	65840422	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.67
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	390153000	USD
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	66041058	shares
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.91
CY2020	ess	Income From Continuing Operations Available To Common Stockholders1 IncomeFromContinuingOperationsAvailableToCommonStockholders1	569653000	USD
CY2020	ess	Adjusted Income From Continuing Operations Available To Common Stockholders AdjustedIncomeFromContinuingOperationsAvailableToCommonStockholders	65564982	shares
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.69
CY2019	ess	Income From Continuing Operations Available To Common Stockholders1 IncomeFromContinuingOperationsAvailableToCommonStockholders1	439286000	USD
CY2019	ess	Adjusted Income From Continuing Operations Available To Common Stockholders AdjustedIncomeFromContinuingOperationsAvailableToCommonStockholders	65939455	shares
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.66
CY2018	ess	Income From Continuing Operations Available To Common Stockholders1 IncomeFromContinuingOperationsAvailableToCommonStockholders1	390153000	USD
CY2018	ess	Adjusted Income From Continuing Operations Available To Common Stockholders AdjustedIncomeFromContinuingOperationsAvailableToCommonStockholders	66085089	shares
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.90
CY2018Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	2000000	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Accelerated Compensation Cost ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost	3500000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Accelerated Compensation Cost ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost	3500000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Accelerated Compensation Cost ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost	3500000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	3400000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	23500000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	20.69
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	24.02
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	26.13
CY2020	ess	Sharebased Compensation Arrangementby Sharebased Payment Award Cap On Appreciationof The Market Price Over The Exercise Price Option1 SharebasedCompensationArrangementbySharebasedPaymentAwardCapOnAppreciationofTheMarketPriceOverTheExercisePriceOption1	100	USD
CY2019	ess	Sharebased Compensation Arrangementby Sharebased Payment Award Cap On Appreciationof The Market Price Over The Exercise Price Option1 SharebasedCompensationArrangementbySharebasedPaymentAwardCapOnAppreciationofTheMarketPriceOverTheExercisePriceOption1	100	USD
CY2018	ess	Sharebased Compensation Arrangementby Sharebased Payment Award Cap On Appreciationof The Market Price Over The Exercise Price Option1 SharebasedCompensationArrangementbySharebasedPaymentAwardCapOnAppreciationofTheMarketPriceOverTheExercisePriceOption1	100	USD
CY2018	ess	Sharebased Compensation Arrangementby Sharebased Payment Award Cap On Appreciationof The Market Price Over The Exercise Price Option2 SharebasedCompensationArrangementbySharebasedPaymentAwardCapOnAppreciationofTheMarketPriceOverTheExercisePriceOption2	125	USD
CY2019	ess	Sharebased Compensation Arrangementby Sharebased Payment Award Cap On Appreciationof The Market Price Over The Exercise Price Option2 SharebasedCompensationArrangementbySharebasedPaymentAwardCapOnAppreciationofTheMarketPriceOverTheExercisePriceOption2	125	USD
CY2020	ess	Sharebased Compensation Arrangementby Sharebased Payment Award Cap On Appreciationof The Market Price Over The Exercise Price Option2 SharebasedCompensationArrangementbySharebasedPaymentAwardCapOnAppreciationofTheMarketPriceOverTheExercisePriceOption2	125	USD
CY2020	ess	Stock Price StockPrice	244.74
CY2019	ess	Stock Price StockPrice	304.85
CY2018	ess	Stock Price StockPrice	262.09
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0083
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0201
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0276
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.2572
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.1956
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.2489
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0293
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0272
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0281
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	572971	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	251.10
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	612954	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	224.57
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	536208	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	211.41
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	149020	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	244.74
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	148147	shares
CY2020	ess	Net Operating Income From Segments NetOperatingIncomeFromSegments	1045750000	USD
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	304.85
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	119361	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	262.09
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	70802	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	208.57
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	182817	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	205.25
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	39175	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	159.05
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	38080	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	228.64
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	5313	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	257.87
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	3440	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	221.80
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	613109	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	255.86
CY2019	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	-3164000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	572971	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	251.10
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	612954	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	224.57
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	361985	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	245.83
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	305379	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	223.90
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	322837	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	206.63
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2019	ess	Net Operating Income From Segments NetOperatingIncomeFromSegments	1054101000	USD
CY2018	ess	Net Operating Income From Segments NetOperatingIncomeFromSegments	1006529000	USD
CY2020	ess	Corporate Property Management Expenses CorporatePropertyManagementExpenses	34573000	USD
CY2019	ess	Corporate Property Management Expenses CorporatePropertyManagementExpenses	34067000	USD
CY2018	ess	Corporate Property Management Expenses CorporatePropertyManagementExpenses	32055000	USD
CY2020	us-gaap	Depreciation Depreciation	525497000	USD
CY2019	us-gaap	Depreciation Depreciation	483750000	USD
CY2018	us-gaap	Depreciation Depreciation	479884000	USD
CY2020	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	65388000	USD
CY2019	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	54262000	USD
CY2018	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	53451000	USD
CY2020	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1591000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	168000	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	194000	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1825000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	7105000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2020	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	64967000	USD
CY2018	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	61861000	USD
CY2020	us-gaap	Interest Expense InterestExpense	220633000	USD
CY2019	us-gaap	Interest Expense InterestExpense	217339000	USD
CY2018	us-gaap	Interest Expense InterestExpense	220492000	USD
CY2020	us-gaap	Derivative Gain On Derivative DerivativeGainOnDerivative	10733000	USD
CY2019	us-gaap	Derivative Gain On Derivative DerivativeGainOnDerivative	8446000	USD
CY2018	us-gaap	Derivative Gain On Derivative DerivativeGainOnDerivative	8707000	USD
CY2020	us-gaap	Interest And Other Income InterestAndOtherIncome	40999000	USD
CY2019	us-gaap	Interest And Other Income InterestAndOtherIncome	46298000	USD
CY2018	us-gaap	Interest And Other Income InterestAndOtherIncome	23010000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	66512000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	112136000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	89132000	USD
CY2020	us-gaap	Deferred Other Tax Expense Benefit DeferredOtherTaxExpenseBenefit	1531000	USD
CY2019	us-gaap	Deferred Other Tax Expense Benefit DeferredOtherTaxExpenseBenefit	1457000	USD
CY2018	us-gaap	Deferred Other Tax Expense Benefit DeferredOtherTaxExpenseBenefit	0	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-22883000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	3717000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2020	ess	Gain On Remeasurement Of Co Investment GainOnRemeasurementOfCoInvestment	234694000	USD
CY2019	ess	Gain On Remeasurement Of Co Investment GainOnRemeasurementOfCoInvestment	31535000	USD
CY2018	ess	Gain On Remeasurement Of Co Investment GainOnRemeasurementOfCoInvestment	1253000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	599332000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	464448000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	413599000	USD
CY2020Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	10927786000	USD
CY2019Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	10348660000	USD
CY2020Q4	us-gaap	Development In Process DevelopmentInProcess	386047000	USD
CY2019Q4	us-gaap	Development In Process DevelopmentInProcess	546075000	USD
CY2020Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	1018010000	USD
CY2019Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	1335339000	USD
CY2020Q4	us-gaap	Real Estate Heldforsale RealEstateHeldforsale	57938000	USD
CY2019Q4	us-gaap	Real Estate Heldforsale RealEstateHeldforsale	0	USD
CY2020Q4	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	84041000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	81094000	USD
CY2020Q4	us-gaap	Marketable Securities MarketableSecurities	147768000	USD
CY2019Q4	us-gaap	Marketable Securities MarketableSecurities	144193000	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	195104000	USD
CY2019Q4	us-gaap	Notes Receivable Net NotesReceivableNet	134365000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	72143000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	74744000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	47340000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	40935000	USD
CY2020Q4	us-gaap	Assets Assets	12936177000	USD
CY2019Q4	us-gaap	Assets Assets	12705405000	USD
CY2020	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.50
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2700000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2400000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2100000	USD
CY2020Q4	ess	Property Casualty Insurance Deductible Per Incident Maximum PropertyCasualtyInsuranceDeductiblePerIncidentMaximum	5000000.0	USD
CY2020Q4	srt	Real Estate And Accumulated Depreciation Amount Of Encumbrances RealEstateAndAccumulatedDepreciationAmountOfEncumbrances	643550000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Land RealEstateAndAccumulatedDepreciationInitialCostOfLand	2887393000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	10154628000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Carrying Costs RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	2019724000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Land RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	2929009000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	12132736000	USD
CY2020Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	15061745000	USD
CY2020Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	4133959000	USD
CY2020	ess	Aggregate Cost For Federal Income Tax Purpose AggregateCostForFederalIncomeTaxPurpose	11600000000	USD
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	3689482000	USD
CY2018Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	3209548000	USD
CY2017Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	2769297000	USD
CY2020	ess	Sec Schedule Iiir Eal Estate Improvements Acquisitions And Developments SECScheduleIIIREalEstateImprovementsAcquisitionsAndDevelopments	1426505000	USD
CY2019	ess	Sec Schedule Iiir Eal Estate Improvements Acquisitions And Developments SECScheduleIIIREalEstateImprovementsAcquisitionsAndDevelopments	672041000	USD
CY2018	ess	Sec Schedule Iiir Eal Estate Improvements Acquisitions And Developments SECScheduleIIIREalEstateImprovementsAcquisitionsAndDevelopments	325986000	USD
CY2020	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	518629000	USD
CY2019	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	479934000	USD
CY2018	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	478721000	USD
CY2020	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	402902000	USD
CY2019	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	0	USD
CY2018	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	321958000	USD
CY2020	us-gaap	Real Estate Accumulated Depreciation Other Deductions RealEstateAccumulatedDepreciationOtherDeductions	74152000	USD
CY2019	us-gaap	Real Estate Accumulated Depreciation Other Deductions RealEstateAccumulatedDepreciationOtherDeductions	0	USD
CY2018	us-gaap	Real Estate Accumulated Depreciation Other Deductions RealEstateAccumulatedDepreciationOtherDeductions	38470000	USD
CY2020Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	4133959000	USD
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	3689482000	USD
CY2018Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	3209548000	USD

Files In Submission

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0000920522-21-000015-index-headers.html	Edgar Link	pending
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$ESS
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2019 Q4 Form 10-K Financial Statement

#000092052221000015 Filed on February 19, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ESS ESSEX PROPERTY TRUST, INC. Stock $ess

2019 Q4 Form 10-K Financial Statement

#000092052221000015 Filed on February 19, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ESS
ESSEX PROPERTY TRUST, INC. Stock $ess