$ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC. Stock $are

$are Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000103544321000044 Filed on February 01, 2021

Income Statement

Concept	2020 Q4	2019 Q4	2019 Q3
Revenue	$463.7M	$408.1M	$390.5M
YoY Change	13.63%	19.87%	14.24%
Cost Of Revenue	$136.8M	$121.9M	$116.5M
YoY Change	12.22%	24.77%	16.73%
Gross Profit	$327.0M	$286.3M	$274.0M
YoY Change	14.22%	17.92%	13.18%
Gross Profit Margin	70.52%	70.15%	70.17%
Selling, General & Admin	$32.70M	$29.80M	$27.90M
YoY Change	9.73%	33.04%	22.91%
% of Gross Profit	10.0%	10.41%	10.18%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$177.7M	$140.5M	$135.6M
YoY Change	26.48%	12.4%	13.38%
% of Gross Profit	54.34%	49.07%	49.49%
Operating Expenses	$210.4M	$170.3M	$163.5M
YoY Change	23.55%	15.54%	14.98%
Operating Profit	$116.6M	$116.0M	$110.5M
YoY Change	0.52%	21.59%	10.61%
Interest Expense	$221.2M	$112.0M	$46.20M
YoY Change	97.5%	-191.28%	9.37%
% of Operating Profit	189.71%	96.55%	41.81%
Other Income/Expense, Net
YoY Change
Pretax Income	$457.1M	$216.1M	-$36.00M
YoY Change	111.52%	-1261.83%	-116.41%
Income Tax
% Of Pretax Income
Net Earnings	$441.5M	$202.4M	-$47.20M
YoY Change	118.13%	-919.43%	-122.09%
Net Earnings / Revenue	95.21%	49.59%	-12.09%
Basic Earnings Per Share	$3.26	$1.75	-$0.44
Diluted Earnings Per Share	$3.26	$1.74	-$0.44
COMMON SHARES
Basic Shares Outstanding	134.9M shares	115.2M shares	112.1M shares
Diluted Shares Outstanding			112.1M shares

Balance Sheet

Concept	2020 Q4	2019 Q4	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$569.0M	$190.0M	$411.0M
YoY Change	199.47%	-18.8%	101.47%
Cash & Equivalents	$568.5M	$189.7M	$410.7M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables	$7.000M	$11.00M	$11.00M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$576.0M	$201.0M	$422.0M
YoY Change	186.57%	-17.62%	96.28%
LONG-TERM ASSETS
Property, Plant & Equipment	$31.13M	$23.03M	$17.51M
YoY Change	35.17%	55.75%	35.14%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$1.943B	$1.487B	$1.331B
YoY Change	30.67%	31.59%	15.24%
Other Assets	$1.147B	$1.012B	$961.0M
YoY Change	13.34%	18.22%	15.23%
Total Long-Term Assets	$22.25B	$18.19B	$16.64B
YoY Change	22.33%	27.91%	19.77%
TOTAL ASSETS
Total Short-Term Assets	$576.0M	$201.0M	$422.0M
Total Long-Term Assets	$22.25B	$18.19B	$16.64B
Total Assets	$22.83B	$18.39B	$17.06B
YoY Change	24.13%	27.14%	20.93%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$285.0M	$475.0M	$492.0M
YoY Change	-40.0%	-3.26%	10.31%
Accrued Expenses	$679.0M	$272.0M	$271.0M
YoY Change	149.63%
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	$1.115B	$873.0M	$879.0M
YoY Change	27.72%	45.26%	60.69%
LONG-TERM LIABILITIES
Long-Term Debt	$7.563B	$6.777B	$6.738B
YoY Change	11.6%	23.71%	18.54%
Other Long-Term Liabilities	$706.0M	$574.0M	$479.0M
YoY Change	23.0%	17.14%	3.9%
Total Long-Term Liabilities	$8.269B	$7.351B	$7.217B
YoY Change	12.49%	23.17%	17.45%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.115B	$873.0M	$879.0M
Total Long-Term Liabilities	$8.269B	$7.351B	$7.217B
Total Liabilities	$9.384B	$8.224B	$8.095B
YoY Change	14.11%	25.17%	20.96%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock	$1.367M	$1.208M	$1.132M
YoY Change	13.16%	8.83%	6.99%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$11.73B	$8.866B	$7.790B
YoY Change
Total Liabilities & Shareholders Equity	$22.83B	$18.39B	$17.06B
YoY Change	24.13%	27.14%	20.93%

Cashflow Statement

Concept	2020 Q4	2019 Q4	2019 Q3
OPERATING ACTIVITIES
Net Income	$441.5M	$202.4M	-$47.20M
YoY Change	118.13%	-919.43%	-122.09%
Depreciation, Depletion And Amortization	$177.7M	$140.5M	$135.6M
YoY Change	26.48%	12.4%	13.38%
Cash From Operating Activities	$173.6M	$178.3M	$197.3M
YoY Change	-2.64%	14.15%	26.56%
INVESTING ACTIVITIES
Capital Expenditures	-$954.1M	-$1.280B	-$911.6M
YoY Change	-25.48%	262.08%	85.74%
Acquisitions
YoY Change
Other Investing Activities	$541.0M	-$10.20M	$13.10M
YoY Change	-5403.92%	-76.82%	-397.73%
Cash From Investing Activities	-$413.2M	-$1.290B	-$898.7M
YoY Change	-67.98%	224.47%	81.48%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	351.6M	901.8M	916.5M
YoY Change	-61.01%	221.38%	264.7%
NET CHANGE
Cash From Operating Activities	173.6M	178.3M	197.3M
Cash From Investing Activities	-413.2M	-1.290B	-898.7M
Cash From Financing Activities	351.6M	901.8M	916.5M
Net Change In Cash	112.0M	-210.3M	215.1M
YoY Change	-153.26%	-637.85%	-344.43%
FREE CASH FLOW
Cash From Operating Activities	$173.6M	$178.3M	$197.3M
Capital Expenditures	-$954.1M	-$1.280B	-$911.6M
Free Cash Flow	$1.128B	$1.459B	$1.109B
YoY Change	-22.69%	186.11%	71.47%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001035443
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2020	dei	Entity Small Business EntitySmallBusiness	false
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	City Area Code CityAreaCode	626
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Pasadena
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	91101
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Entity File Number EntityFileNumber	1-12993
CY2020	dei	Entity Registrant Name EntityRegistrantName	ALEXANDRIA REAL ESTATE EQUITIES, INC.
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	95-4502084
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	26 North Euclid Avenue
CY2020	dei	Local Phone Number LocalPhoneNumber	578-0777
CY2020	dei	Security12b Title Security12bTitle	Common Stock, $0.01 par value per share
CY2020	dei	Trading Symbol TradingSymbol	ARE
CY2020	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	No
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2020Q2	dei	Entity Public Float EntityPublicFloat	20200000000	USD
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	136692746	shares
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CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-7369000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	3124000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	2524000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-7369000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3124000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	686000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-10688000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	830295000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	404733000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	392105000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	56212000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	40882000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	23481000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	774083000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	363851000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	368624000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6471660000	USD
CY2018	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	401930000	USD
CY2018	are	Other Comprehensive Income Loss Netof Tax Including Portion Attributableto Nonredeemable Noncontrolling Interest OtherComprehensiveIncomeLossNetofTaxIncludingPortionAttributabletoNonredeemableNoncontrollingInterest	-10688000	USD
CY2018	are	Reclassification Of Cumulative Net Unrealized Gains On Non Real Estate Investments ReclassificationOfCumulativeNetUnrealizedGainsOnNonRealEstateInvestments	90750000	USD
CY2018	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	27418000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	29810000	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1304640000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	45978000	USD
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.73
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	398914000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7883928000	USD
CY2019	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	403172000	USD
CY2019	are	Other Comprehensive Income Loss Netof Tax Including Portion Attributableto Nonredeemable Noncontrolling Interest OtherComprehensiveIncomeLossNetofTaxIncludingPortionAttributabletoNonredeemableNoncontrollingInterest	686000	USD
CY2019	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	1134939000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	47395000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1216445000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	67913000	USD
CY2019	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	25477000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	4.00
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	463964000	USD
CY2019	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	3204000	USD
CY2019Q1	are	Cumulative Effect Of Adjustments Upon Adoption Of Lease As Us CumulativeEffectOfAdjustmentsUponAdoptionOfLeaseASUs	-3525000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	10154178000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	10154178000	USD
CY2020	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	826268000	USD
CY2020	are	Other Comprehensive Income Loss Netof Tax Including Portion Attributableto Nonredeemable Noncontrolling Interest OtherComprehensiveIncomeLossNetofTaxIncludingPortionAttributabletoNonredeemableNoncontrollingInterest	3124000	USD
CY2020	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	717158000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	86663000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	2315862000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	83999000	USD
CY2020	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	21322000	USD
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	557684000	USD
CY2020Q1	are	Cumulative Effect Of Adjustment Upon Adoption Of Credit Loss Asu CumulativeEffectOfAdjustmentUponAdoptionOfCreditLossASU	-2484000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	13432436000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	827171000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	404047000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	402793000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	698104000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	544612000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	477661000	USD
CY2020	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	48078000	USD
CY2019	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	12334000	USD
CY2018	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	6311000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Real Estate Discontinued Operations GainLossOnDispositionOfRealEstateDiscontinuedOperations	154089000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Real Estate Discontinued Operations GainLossOnDispositionOfRealEstateDiscontinuedOperations	474000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Real Estate Discontinued Operations GainLossOnDispositionOfRealEstateDiscontinuedOperations	8704000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-60668000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-47570000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1122000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	8148000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	10136000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	43981000	USD
CY2020	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	5908000	USD
CY2019	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	2796000	USD
CY2018	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	430000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	10494000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	9105000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	10271000	USD
CY2019	us-gaap	Increase Decrease In Leasing Receivables IncreaseDecreaseInLeasingReceivables	897000	USD
CY2020	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	-3555000	USD
CY2019	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	-3777000	USD
CY2018	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	-2406000	USD
CY2020	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	-57244000	USD
CY2019	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	-29813000	USD
CY2018	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	-21938000	USD
CY2020	us-gaap	Straight Line Rent StraightLineRent	96676000	USD
CY2019	us-gaap	Straight Line Rent StraightLineRent	104235000	USD
CY2018	us-gaap	Straight Line Rent StraightLineRent	93883000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	43502000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	43640000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	35019000	USD
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	421321000	USD
CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	194647000	USD
CY2018	us-gaap	Gain Loss On Investments GainLossOnInvestments	136763000	USD
CY2020	us-gaap	Increase Decrease In Leasing Receivables IncreaseDecreaseInLeasingReceivables	-2804000	USD
CY2018	us-gaap	Increase Decrease In Leasing Receivables IncreaseDecreaseInLeasingReceivables	-435000	USD
CY2020	us-gaap	Increase Decrease In Deferred Leasing Fees IncreaseDecreaseInDeferredLeasingFees	61067000	USD
CY2019	us-gaap	Increase Decrease In Deferred Leasing Fees IncreaseDecreaseInDeferredLeasingFees	54455000	USD
CY2018	us-gaap	Increase Decrease In Deferred Leasing Fees IncreaseDecreaseInDeferredLeasingFees	57088000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	10997000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	20825000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	20849000	USD
CY2020	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	-1122000	USD
CY2019	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	39012000	USD
CY2018	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	21909000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	882510000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	683857000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	570339000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Held For Sale ProceedsFromSaleOfPropertyHeldForSale	747020000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Held For Sale ProceedsFromSaleOfPropertyHeldForSale	6619000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Held For Sale ProceedsFromSaleOfPropertyHeldForSale	20190000	USD
CY2020	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	1445171000	USD
CY2019	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	1224541000	USD
CY2018	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	927168000	USD
CY2020	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	2570693000	USD
CY2019	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	2259778000	USD
CY2018	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	1037180000	USD
CY2020	us-gaap	Payments For Proceeds From Deposits On Real Estate Acquisitions PaymentsForProceedsFromDepositsOnRealEstateAcquisitions	-7408000	USD
CY2019	us-gaap	Payments For Proceeds From Deposits On Real Estate Acquisitions PaymentsForProceedsFromDepositsOnRealEstateAcquisitions	18107000	USD
CY2018	us-gaap	Payments For Proceeds From Deposits On Real Estate Acquisitions PaymentsForProceedsFromDepositsOnRealEstateAcquisitions	2000000	USD
CY2020	are	Acquisition Of Interest In Unconsolidated Joint Venture AcquisitionOfInterestInUnconsolidatedJointVenture	0	USD
CY2019	are	Acquisition Of Interest In Unconsolidated Joint Venture AcquisitionOfInterestInUnconsolidatedJointVenture	0	USD
CY2018	are	Acquisition Of Interest In Unconsolidated Joint Venture AcquisitionOfInterestInUnconsolidatedJointVenture	35922000	USD
CY2020	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	3444000	USD
CY2019	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	102081000	USD
CY2018	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	116008000	USD
CY2020	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	20225000	USD
CY2019	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	14000	USD
CY2018	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	68592000	USD
CY2020	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	174655000	USD
CY2019	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	190778000	USD
CY2018	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	235943000	USD
CY2020	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	141149000	USD
CY2019	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	147332000	USD
CY2018	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	103679000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3278161000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3641320000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2161760000	USD
CY2020	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	17784000	USD
CY2020	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	84104000	USD
CY2019	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	306199000	USD
CY2018	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	156888000	USD
CY2020	are	Payment For The Defeasance Of Secured Note Payable PaymentForTheDefeasanceOfSecuredNotePayable	32865000	USD
CY2019	are	Payment For The Defeasance Of Secured Note Payable PaymentForTheDefeasanceOfSecuredNotePayable	0	USD
CY2018	are	Payment For The Defeasance Of Secured Note Payable PaymentForTheDefeasanceOfSecuredNotePayable	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	1697651000	USD
CY2019	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	2721169000	USD
CY2018	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	899321000	USD
CY2020	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	500000000	USD
CY2019	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	950000000	USD
CY2018	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	0	USD
CY2020	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	2700000000	USD
CY2019	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	5056000000	USD
CY2018	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	4741000000	USD
CY2020	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	3084000000	USD
CY2019	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	4880000000	USD
CY2018	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	4583000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	23539400000	USD
CY2019	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	2233000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	0	USD
CY2020	us-gaap	Repayments Of Commercial Paper RepaymentsOfCommercialPaper	23439400000	USD
CY2019	us-gaap	Repayments Of Commercial Paper RepaymentsOfCommercialPaper	2233000000	USD
CY2018	us-gaap	Repayments Of Commercial Paper RepaymentsOfCommercialPaper	0	USD
CY2020	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	USD
CY2019	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	350000000	USD
CY2018	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	200000000	USD
CY2020	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	54385000	USD
CY2019	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	41351000	USD
CY2018	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
CY2020	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	32309000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	27182000	USD
CY2018	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	19292000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	21322000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	25477000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	0	USD
CY2020	us-gaap	Payments For Repurchase Of Convertible Preferred Stock PaymentsForRepurchaseOfConvertiblePreferredStock	0	USD
CY2019	us-gaap	Payments For Repurchase Of Convertible Preferred Stock PaymentsForRepurchaseOfConvertiblePreferredStock	9240000	USD
CY2018	us-gaap	Payments For Repurchase Of Convertible Preferred Stock PaymentsForRepurchaseOfConvertiblePreferredStock	13976000	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2315862000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1216445000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1293301000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	532980000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	447029000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	380632000	USD
CY2020	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
CY2019	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	4141000	USD
CY2018	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	5207000	USD
CY2020	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	367613000	USD
CY2019	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	1022712000	USD
CY2018	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	28275000	USD
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	88805000	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	48225000	USD
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	32253000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2750356000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2927482000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1588433000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	311000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	540000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-2068000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	355016000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-29441000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-5056000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	242689000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	272130000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	277186000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	597705000	USD
CY2020	are	Percentageoftotalrevenues Percentageoftotalrevenues	0.985
CY2019	us-gaap	Notes Assumed1 NotesAssumed1	28200000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	242689000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	272130000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	161351000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	146165000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	127093000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	275454000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	220773000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	244147000	USD
CY2020	us-gaap	Notes Assumed1 NotesAssumed1	0	USD
CY2018	us-gaap	Notes Assumed1 NotesAssumed1	0	USD
CY2020	are	Noncashrightofuseasset Noncashrightofuseasset	87554000	USD
CY2019	are	Noncashrightofuseasset Noncashrightofuseasset	269189000	USD
CY2018	are	Noncashrightofuseasset Noncashrightofuseasset	0	USD
CY2020	are	Noncashleaseliability Noncashleaseliability	87554000	USD
CY2019	are	Noncashleaseliability Noncashleaseliability	275175000	USD
CY2018	are	Noncashleaseliability Noncashleaseliability	0	USD
CY2020	are	Payableforpurchaseofrealestate Payableforpurchaseofrealestate	0	USD
CY2019	are	Payableforpurchaseofrealestate Payableforpurchaseofrealestate	0	USD
CY2018	are	Payableforpurchaseofrealestate Payableforpurchaseofrealestate	65000000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	350000000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	115167000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	0	USD
CY2020	are	Issuance Of Noncontrolling Interest To Joint Venture Partner IssuanceOfNoncontrollingInterestToJointVenturePartner	292930000	USD
CY2019	are	Issuance Of Noncontrolling Interest To Joint Venture Partner IssuanceOfNoncontrollingInterestToJointVenturePartner	0	USD
CY2018	are	Issuance Of Noncontrolling Interest To Joint Venture Partner IssuanceOfNoncontrollingInterestToJointVenturePartner	0	USD
CY2020	us-gaap	Conversion Of Stock Amount Issued1 ConversionOfStockAmountIssued1	0	USD
CY2019	us-gaap	Conversion Of Stock Amount Issued1 ConversionOfStockAmountIssued1	57461000	USD
CY2018	us-gaap	Conversion Of Stock Amount Issued1 ConversionOfStockAmountIssued1	0	USD
CY2020Q4	are	Cost Method Investment Ownership Percentage CostMethodInvestmentOwnershipPercentage	0.10
CY2020	us-gaap	Nature Of Operations NatureOfOperations	<div style="text-indent:36pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">Alexandria Real Estate Equities, Inc. (NYSE:ARE), an S&P 500</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:5.85pt;font-weight:400;line-height:120%;position:relative;top:-3.15pt;vertical-align:baseline">® </span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">urban office REIT, is the first, longest-tenured, and pioneering owner, operator, and developer uniquely focused on collaborative life science, technology, and agtech campuses in AAA innovation cluster locations. As used in this annual report on Form 10-K, references to the “Company,” “Alexandria,” “ARE,” “we,” “us,” and “our” refer to Alexandria Real Estate Equities, Inc. and its consolidated subsidiaries. The accompanying consolidated financial statements include the accounts of Alexandria Real Estate Equities, Inc. and its consolidated subsidiaries. All significant intercompany balances and transactions have been eliminated.</span></div><div><span><br/></span></div><div style="text-indent:36pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">Any references to our market capitalization, number or quality of buildings or tenants, quality of location, square footage, number of leases, or occupancy percentage, and any amounts derived from these values in these notes to consolidated financial statements are unaudited.</span></div>
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="color:#00497f;font-family:'Arial',sans-serif;font-size:9pt;font-weight:700;line-height:120%">Use of estimates</span></div><div><span><br/></span></div><div style="text-indent:36pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">The preparation of consolidated financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, and equity; the disclosure of contingent assets and liabilities as of the date of the consolidated financial statements; and the amounts of revenues and expenses during the reporting period. Actual results could materially differ from those estimates.</span></div>
CY2020	are	Maximum Expected Period Of Sale Of Property MaximumExpectedPeriodOfSaleOfProperty	P1Y
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1900000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1531296000	USD
CY2020	us-gaap	Revenue Recognition Leases RevenueRecognitionLeases	<div><span style="color:#00497f;font-family:'Arial',sans-serif;font-size:9pt;font-weight:700;line-height:120%">Revenues</span></div><div><span><br/></span></div><div style="margin-bottom:6pt;text-indent:36pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">The table below provides detail of our consolidated total revenues for the years ended December 31, 2020 and 2019 (in thousands):</span></div><div style="margin-bottom:6pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;vertical-align:top;width:100.000%"><tr><td style="width:1.0%"/><td style="width:57.650%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.494%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:18.900%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.355%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:18.901%"/><td style="width:0.1%"/></tr><tr><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Year Ended December 31,</span></td></tr><tr><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2020</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2019</span></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Income from rentals:</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000000;padding:0 1pt"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Revenues subject to the lease accounting standard:</span></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Operating leases</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,854,427 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,465,692 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Direct financing lease</span></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2,469 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2,421 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 7.75pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Revenues subject to the lease accounting standard</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,856,896 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,468,113 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 7.75pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Revenues subject to the revenue recognition accounting standard</span></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">21,312 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">48,751 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Income from rentals</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,878,208 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,516,864 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Other income</span></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">7,429 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">14,432 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Total revenues</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,885,637 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,531,296 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr></table></div><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">During the year ended December 31, 2020, revenues that were subject to the lease accounting standard aggregated $1.9 billion</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">and represented 98.5% of our total revenues. During the year ended December 31, 2020, our total revenues also included </span><span style="background-color:#ffffff;color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">$28.7 million, or 1.5%, </span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">subject to other accounting guidance. Our other income consisted primarily of construction management fees and interest income earned during the year ended December 31, 2020. For a detailed discussion related to our revenue streams, refer to the “Lease accounting” and “Recognition of revenue arising from contracts with customers” sections within this Note 2 to our consolidated financial statements.</span>
CY2020	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	1854427000	USD
CY2019	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	1465692000	USD
CY2020	us-gaap	Direct Financing Lease Lease Income DirectFinancingLeaseLeaseIncome	2469000	USD
CY2019	us-gaap	Direct Financing Lease Lease Income DirectFinancingLeaseLeaseIncome	2421000	USD
CY2020	us-gaap	Lease Income LeaseIncome	1856896000	USD
CY2019	us-gaap	Lease Income LeaseIncome	1468113000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1885637000	USD
CY2019Q1	us-gaap	Sales Type Lease Initial Direct Cost Expense Commencement SalesTypeLeaseInitialDirectCostExpenseCommencement	3500000	USD
CY2019Q1	are	Ground And Operating Lease Obligation Due GroundAndOperatingLeaseObligationDue	590300000	USD
CY2019Q1	are	Reclassification Of Deferred Rent Liabilities ReclassificationOfDeferredRentLiabilities	27000000.0	USD
CY2020Q1	are	Revenuewith Customer Asset Adjustmentto Allowancefor Credit Loss RevenuewithCustomerAssetAdjustmenttoAllowanceforCreditLoss	1600000	USD
CY2020Q4	are	Revenuewith Customer Asset Adjustmentto Allowancefor Credit Loss RevenuewithCustomerAssetAdjustmenttoAllowanceforCreditLoss	0	USD
CY2020Q3	are	Revenuewith Customer Asset Adjustmentto Allowancefor Credit Loss RevenuewithCustomerAssetAdjustmenttoAllowanceforCreditLoss	0	USD
CY2020Q2	are	Revenuewith Customer Asset Adjustmentto Allowancefor Credit Loss RevenuewithCustomerAssetAdjustmenttoAllowanceforCreditLoss	0	USD
CY2020Q4	us-gaap	Contract With Customer Asset Accumulated Allowance For Credit Loss ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss	3800000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	39900000	USD
CY2020Q1	us-gaap	Direct Financing Lease Net Investment In Lease Allowance For Credit Loss DirectFinancingLeaseNetInvestmentInLeaseAllowanceForCreditLoss	2200000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	39900000	USD
CY2020Q1	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	37700000	USD
CY2020Q4	are	Creditlossrelatedtotradereceivables Creditlossrelatedtotradereceivables	259000	USD
CY2020	are	Minimum Percentage Of Taxable Income To Be Distributed MinimumPercentageOfTaxableIncomeToBeDistributed	0.90
CY2020	are	Percent Of Taxable Income Generally Distributed As Dividend PercentOfTaxableIncomeGenerallyDistributedAsDividend	1
CY2020Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	18092372000	USD
CY2019Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	14844038000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	286100000	USD
CY2020Q4	us-gaap	Below Market Lease Gross BelowMarketLeaseGross	151100000	USD
CY2020	are	Weightedaverageremainingamortizationperiodacquiredinplaceandbelowmarketleases Weightedaverageremainingamortizationperiodacquiredinplaceandbelowmarketleases	P8Y9M18D
CY2020	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	48100000	USD
	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	15200000	USD
CY2020Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	332349000	USD
CY2019Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	346890000	USD
CY2020Q4	are	Landparcelsubjecttoleaseagreementthatcontainsapurchaseoption Landparcelsubjecttoleaseagreementthatcontainsapurchaseoption	2
CY2020	us-gaap	Lessor Operating Lease Lessee Option To Purchase Underlying Asset LessorOperatingLeaseLesseeOptionToPurchaseUnderlyingAsset	30
CY2017Q4	are	Rent Commence Date RentCommenceDate	2017-10-01
CY2020Q4	are	Landparcelsubjecttoleaseagreementthatcontainsapurchaseoption Landparcelsubjecttoleaseagreementthatcontainsapurchaseoption	2
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	1234654000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	1251446000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	1222980000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	1114259000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	1035300000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	6328067000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	12186706000	USD
CY2020	are	Lessor Finance Lease Remaining Lease Term LessorFinanceLeaseRemainingLeaseTerm	P71Y10M24D
CY2020	us-gaap	Lessor Direct Financing Lease Lessee Option To Purchase Underlying Asset LessorDirectFinancingLeaseLesseeOptionToPurchaseUnderlyingAsset	30
CY2017Q4	are	Rent Commence Date RentCommenceDate	2017-10-01
CY2020Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived	258751000	USD
CY2019Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived	260457000	USD
CY2020Q4	are	Direct Financing Lease Unearned Income DirectFinancingLeaseUnearnedIncome	218072000	USD
CY2019Q4	are	Direct Financing Lease Unearned Income DirectFinancingLeaseUnearnedIncome	220541000	USD
CY2020Q4	us-gaap	Net Investment In Lease Allowance For Credit Loss NetInvestmentInLeaseAllowanceForCreditLoss	2839000	USD
CY2019Q4	us-gaap	Net Investment In Lease Allowance For Credit Loss NetInvestmentInLeaseAllowanceForCreditLoss	0	USD
CY2020Q4	us-gaap	Direct Financing Lease Net Investment In Lease DirectFinancingLeaseNetInvestmentInLease	37840000	USD
CY2019Q4	us-gaap	Direct Financing Lease Net Investment In Lease DirectFinancingLeaseNetInvestmentInLease	39916000	USD
CY2020Q1	us-gaap	Direct Financing Lease Net Investment In Lease Allowance For Credit Loss DirectFinancingLeaseNetInvestmentInLeaseAllowanceForCreditLoss	2200000	USD
CY2020Q1	us-gaap	Direct Financing Lease Net Investment In Lease Allowance For Credit Loss DirectFinancingLeaseNetInvestmentInLeaseAllowanceForCreditLoss	2800000	USD
CY2020Q4	are	Adjustmenttocreditlossrelatedtotradereceivables Adjustmenttocreditlossrelatedtotradereceivables	614000	USD
CY2020Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Next Twelve Months SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextTwelveMonths	1756000	USD
CY2020Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Two Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears	1809000	USD
CY2020Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Three Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears	1863000	USD
CY2020Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Four Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears	1919000	USD
CY2020Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Five Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFiveYears	1976000	USD
CY2020Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Thereafter SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThereafter	249428000	USD
CY2020Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived	258751000	USD
CY2020	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	1854427000	USD
CY2019	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	1465692000	USD
CY2020	us-gaap	Direct Financing Lease Lease Income DirectFinancingLeaseLeaseIncome	2469000	USD
CY2019	us-gaap	Direct Financing Lease Lease Income DirectFinancingLeaseLeaseIncome	2421000	USD
CY2020	us-gaap	Lease Income LeaseIncome	1856896000	USD
CY2019	us-gaap	Lease Income LeaseIncome	1468113000	USD
CY2020Q4	us-gaap	Deferred Costs Leasing Gross DeferredCostsLeasingGross	679300000	USD
CY2019Q4	us-gaap	Deferred Costs Leasing Gross DeferredCostsLeasingGross	631416000	USD
CY2020Q4	us-gaap	Deferred Costs Leasing Accumulated Amortization DeferredCostsLeasingAccumulatedAmortization	406627000	USD
CY2019Q4	us-gaap	Deferred Costs Leasing Accumulated Amortization DeferredCostsLeasingAccumulatedAmortization	361373000	USD
CY2020Q4	us-gaap	Deferred Costs Leasing Net DeferredCostsLeasingNet	272673000	USD
CY2019Q4	us-gaap	Deferred Costs Leasing Net DeferredCostsLeasingNet	270043000	USD
CY2020Q4	are	Ground And Operating Lease Obligation Due GroundAndOperatingLeaseObligationDue	825800000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	335900000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0488
CY2020Q4	us-gaap	Number Of Properties Subject To Ground Leases NumberOfPropertiesSubjectToGroundLeases	36	property
CY2020Q4	are	Ground Lease Related To Operating Property Net Book Value GroundLeaseRelatedToOperatingPropertyNetBookValue	7100000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	18903000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	19915000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	20088000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	20334000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	20364000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	726200000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	825804000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	480054000	USD
CY2020	are	Operating Lease Obligation Remaining Lease Term OperatingLeaseObligationRemainingLeaseTerm	P14Y
CY2020	are	Gross Operating Lease Costs GrossOperatingLeaseCosts	23518000	USD
CY2019	are	Gross Operating Lease Costs GrossOperatingLeaseCosts	19740000	USD
CY2018	are	Gross Operating Lease Costs GrossOperatingLeaseCosts	16102000	USD
CY2020	are	Capitalized Lease Costs CapitalizedLeaseCosts	3529000	USD
CY2019	are	Capitalized Lease Costs CapitalizedLeaseCosts	1452000	USD
CY2018	are	Capitalized Lease Costs CapitalizedLeaseCosts	340000	USD
CY2020	us-gaap	Lease Cost LeaseCost	19989000	USD
CY2019	us-gaap	Lease Cost LeaseCost	18288000	USD
CY2018	us-gaap	Lease Cost LeaseCost	15762000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	20800000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	17700000	USD
CY2018	us-gaap	Operating Lease Payments OperatingLeasePayments	14800000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	568532000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	189681000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	29173000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	53008000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	597705000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	242689000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	835438000	USD
CY2020Q4	are	Cumulativeunrealizedgainslossesoninvestments Cumulativeunrealizedgainslossesoninvestments	775676000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni And Without Readily Determinable Fair Value EquitySecuritiesFvNiAndWithoutReadilyDeterminableFairValue	1611114000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	738951000	USD
CY2019Q4	are	Cumulativeunrealizedgainslossesoninvestments Cumulativeunrealizedgainslossesoninvestments	401643000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni And Without Readily Determinable Fair Value EquitySecuritiesFvNiAndWithoutReadilyDeterminableFairValue	1140594000	USD
CY2020	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	47288000	USD
CY2019	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	33158000	USD
CY2018	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	37129000	USD
CY2020	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	374033000	USD
CY2019	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	161489000	USD
CY2018	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	99634000	USD
CY2020	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	421321000	USD
CY2019	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	194647000	USD
CY2018	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	136763000	USD
CY2020Q4	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	210600000	USD
CY2020	are	Limited Partnership Maximum Expiration Terms LimitedPartnershipMaximumExpirationTerms	P11Y
CY2020	are	Limited Partnership Liquidation Expected Initial Term In Years LimitedPartnershipLiquidationExpectedInitialTermInYears	P10Y
CY2020	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Liquidating Investment Remaining Period1 FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareLiquidatingInvestmentRemainingPeriod1	P5Y1M6D
CY2020Q4	us-gaap	Finite Lived Intangible Asset Acquired In Place Leases FiniteLivedIntangibleAssetAcquiredInPlaceLeases	462324000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Asset Acquired In Place Leases FiniteLivedIntangibleAssetAcquiredInPlaceLeases	281650000	USD
CY2020Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	31057000	USD
CY2019Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	22225000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	24124000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	13064000	USD
CY2020Q4	us-gaap	Deposits Assets DepositsAssets	13861000	USD
CY2019Q4	us-gaap	Deposits Assets DepositsAssets	31028000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	31130000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	23031000	USD
CY2020Q4	us-gaap	Direct Financing Lease Net Investment In Lease DirectFinancingLeaseNetInvestmentInLease	37840000	USD
CY2019Q4	us-gaap	Direct Financing Lease Net Investment In Lease DirectFinancingLeaseNetInvestmentInLease	39916000	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	3424000	USD
CY2019Q4	us-gaap	Notes Receivable Net NotesReceivableNet	435000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	335920000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	264709000	USD
CY2020Q4	us-gaap	Other Assets Miscellaneous OtherAssetsMiscellaneous	30620000	USD
CY2019Q4	us-gaap	Other Assets Miscellaneous OtherAssetsMiscellaneous	32040000	USD
CY2020Q4	us-gaap	Prepaid Expense Current And Noncurrent PrepaidExpenseCurrentAndNoncurrent	67667000	USD
CY2019Q4	us-gaap	Prepaid Expense Current And Noncurrent PrepaidExpenseCurrentAndNoncurrent	11324000	USD
CY2020Q4	are	Real Estate Corporate Operations RealEstateCorporateOperations	153614000	USD
CY2019Q4	are	Real Estate Corporate Operations RealEstateCorporateOperations	174292000	USD
CY2020Q4	us-gaap	Other Assets OtherAssets	1191581000	USD
CY2019Q4	us-gaap	Other Assets OtherAssets	893714000	USD
CY2020	are	Transfers In Fair Value Hierarchy TransfersInFairValueHierarchy	0
CY2020Q4	us-gaap	Equity Securities Fv Ni And Without Readily Determinable Fair Value EquitySecuritiesFvNiAndWithoutReadilyDeterminableFairValue	1600000000	USD
CY2020Q4	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.0376
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	3420000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	3592000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	3772000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	833559000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	7563286000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	600034000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	6153753000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	7598130000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	-34844000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	7563286000	USD
CY2020Q4	are	Longterm Debt Percentage Bearing Fixed Interest Amount Net LongtermDebtPercentageBearingFixedInterestAmountNet	7463295000	USD
CY2020Q4	are	Longterm Debt Percentage Bearing Variable Interest Amount Net LongtermDebtPercentageBearingVariableInterestAmountNet	99991000	USD
CY2020Q4	are	Debt Instrument Percentage Of Outstanding Balance DebtInstrumentPercentageOfOutstandingBalance	1.000
CY2020Q4	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.0376
CY2020	are	Debt Instrument Weighted Average Remaining Period DebtInstrumentWeightedAverageRemainingPeriod	P10Y7M6D
CY2020Q4	are	Fixed Interest Rate Debt As Percentage Of Total Outstanding Balance FixedInterestRateDebtAsPercentageOfTotalOutstandingBalance	0.99
CY2020Q4	are	Variable Interest Rate Debt As Percentage Of Total Outstanding Balance VariableInterestRateDebtAsPercentageOfTotalOutstandingBalance	0.01
CY2020Q4	are	Debt Instrument Percentage Of Outstanding Balance DebtInstrumentPercentageOfOutstandingBalance	1
CY2020	are	Debt Instrument Weighted Average Remaining Period Including Commercial Paper DebtInstrumentWeightedAverageRemainingPeriodIncludingCommercialPaper	P10Y7M6D
CY2020Q4	us-gaap	Senior Notes SeniorNotes	7200000000	USD
CY2020	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	125618000	USD
CY2019	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	88563000	USD
CY2020	us-gaap	Subsidiary Or Equity Method Investee Cumulative Percentage Ownership After All Transactions SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions	1
CY2020	us-gaap	Interest Costs Incurred InterestCostsIncurred	297227000	USD
CY2019	us-gaap	Interest Costs Incurred InterestCostsIncurred	262238000	USD
CY2018	us-gaap	Interest Costs Incurred InterestCostsIncurred	223715000	USD
CY2018	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	66220000	USD
CY2020	us-gaap	Interest Expense InterestExpense	171609000	USD
CY2019	us-gaap	Interest Expense InterestExpense	173675000	USD
CY2018	us-gaap	Interest Expense InterestExpense	157495000	USD
CY2020Q4	us-gaap	Accounts Payable And Other Accrued Liabilities AccountsPayableAndOtherAccruedLiabilities	285021000	USD
CY2019Q4	us-gaap	Accounts Payable And Other Accrued Liabilities AccountsPayableAndOtherAccruedLiabilities	198994000	USD
CY2020Q4	are	Accrued Construction AccruedConstruction	333271000	USD
CY2019Q4	are	Accrued Construction AccruedConstruction	275818000	USD
CY2020Q4	us-gaap	Below Market Lease Net BelowMarketLeaseNet	288075000	USD
CY2019Q4	us-gaap	Below Market Lease Net BelowMarketLeaseNet	194773000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	47070000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	14037000	USD
CY2020Q4	are	Deferred Rent Liability DeferredRentLiability	4495000	USD
CY2019Q4	are	Deferred Rent Liability DeferredRentLiability	2897000	USD
CY2020Q4	are	Prepaid Rent And Tenant Security Deposits PrepaidRentAndTenantSecurityDeposits	276751000	USD
CY2019Q4	are	Prepaid Rent And Tenant Security Deposits PrepaidRentAndTenantSecurityDeposits	275863000	USD
CY2020Q4	us-gaap	Other Accounts Payable And Accrued Liabilities OtherAccountsPayableAndAccruedLiabilities	89399000	USD
CY2019	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	6386000	USD
CY2019Q4	us-gaap	Other Accounts Payable And Accrued Liabilities OtherAccountsPayableAndAccruedLiabilities	86078000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	827171000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	404047000	USD
CY2020Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	1669832000	USD
CY2019Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	1320268000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	402793000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	56212000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	40882000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	23481000	USD
CY2020	us-gaap	Dividends Preferred Stock DividendsPreferredStock	0	USD
CY2019	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3204000	USD
CY2018	us-gaap	Dividends Preferred Stock DividendsPreferredStock	5060000	USD
CY2020	us-gaap	Preferred Stock Accretion Of Redemption Discount PreferredStockAccretionOfRedemptionDiscount	0	USD
CY2019	us-gaap	Preferred Stock Accretion Of Redemption Discount PreferredStockAccretionOfRedemptionDiscount	2580000	USD
CY2018	us-gaap	Preferred Stock Accretion Of Redemption Discount PreferredStockAccretionOfRedemptionDiscount	4240000	USD
CY2020	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	10168000	USD
CY2018	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	6029000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	760791000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	350995000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	363983000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	126106000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	112204000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	103010000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Equity Forward Agreements IncrementalCommonSharesAttributableToEquityForwardAgreements	384000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Equity Forward Agreements IncrementalCommonSharesAttributableToEquityForwardAgreements	320000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Equity Forward Agreements IncrementalCommonSharesAttributableToEquityForwardAgreements	311000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	126490000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	112524000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	103321000	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.03
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.13
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.53
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.01
CY2020	are	Minimum Percentage Of Taxable Income To Be Distributed MinimumPercentageOfTaxableIncomeToBeDistributed	0.90
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.12
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.52
CY2020	are	Percent Of Taxable Income Generally Distributed As Dividend PercentOfTaxableIncomeGenerallyDistributedAsDividend	1
CY2019	us-gaap	Profit Loss ProfitLoss	404047000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	402793000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	40882000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	23481000	USD
CY2019	are	Income Tax Reconciliation Rental Revenue Recognition IncomeTaxReconciliationRentalRevenueRecognition	-132979000	USD
CY2018	are	Income Tax Reconciliation Rental Revenue Recognition IncomeTaxReconciliationRentalRevenueRecognition	-65901000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation And Amortization IncomeTaxReconciliationNondeductibleExpenseDepreciationAndAmortization	177627000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation And Amortization IncomeTaxReconciliationNondeductibleExpenseDepreciationAndAmortization	161514000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	30756000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	30771000	USD
CY2019	are	Income Tax Reconciliation Nondeductible Expense Interest Expense IncomeTaxReconciliationNondeductibleExpenseInterestExpense	-13687000	USD
CY2018	are	Income Tax Reconciliation Nondeductible Expense Interest Expense IncomeTaxReconciliationNondeductibleExpenseInterestExpense	-6414000	USD
CY2019	us-gaap	Income Tax Reconciliation Disposition Of Assets IncomeTaxReconciliationDispositionOfAssets	66717000	USD
CY2018	us-gaap	Income Tax Reconciliation Disposition Of Assets IncomeTaxReconciliationDispositionOfAssets	-39393000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	12334000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2019	are	Effectiveincometaxratereconciliationnondeductibleexpenseunrealizedgainsorlossesonnonrealestateinvestments Effectiveincometaxratereconciliationnondeductibleexpenseunrealizedgainsorlossesonnonrealestateinvestments	-96353000	USD
CY2018	are	Effectiveincometaxratereconciliationnondeductibleexpenseunrealizedgainsorlossesonnonrealestateinvestments Effectiveincometaxratereconciliationnondeductibleexpenseunrealizedgainsorlossesonnonrealestateinvestments	-110322000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	7565000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	9522000	USD
CY2019	are	Taxable Income Before Dividend Deduction TaxableIncomeBeforeDividendDeduction	415145000	USD
CY2018	are	Taxable Income Before Dividend Deduction TaxableIncomeBeforeDividendDeduction	359089000	USD
CY2019	are	Dividend Deduction To Eliminate Taxable Income DividendDeductionToEliminateTaxableIncome	415145000	USD
CY2018	are	Dividend Deduction To Eliminate Taxable Income DividendDeductionToEliminateTaxableIncome	359089000	USD
CY2019	are	Net Taxable Income Loss NetTaxableIncomeLoss	0	USD
CY2018	are	Net Taxable Income Loss NetTaxableIncomeLoss	0	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	451200000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	385800000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	6200000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4900000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4100000	USD
CY2020	are	Number Of Leases Held NumberOfLeasesHeld	909	Lease
CY2020	are	Number Of Tenants NumberOfTenants	670	Tenant
CY2020Q4	are	Remaining Aggregate Costs Under Contracts RemainingAggregateCostsUnderContracts	1200000000	USD
CY2020Q4	us-gaap	Contractual Obligation ContractualObligation	11100000	USD
CY2020Q4	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	210600000	USD
CY2020	are	Limited Partnership Maximum Expiration Terms LimitedPartnershipMaximumExpirationTerms	P11Y
CY2019Q4	us-gaap	Convertible Preferred Stock Shares Issued Upon Conversion ConvertiblePreferredStockSharesIssuedUponConversion	578000	shares
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	3124000	USD
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000.0	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000.0	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	136700000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000.0	shares
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020	are	Preferred Stock Shares Additional Shares Authorized PreferredStockSharesAdditionalSharesAuthorized	200000000.0	shares
CY2020Q4	are	Preferred Stock Shares Additional Shares Authorized Issued And Outstanding PreferredStockSharesAdditionalSharesAuthorizedIssuedAndOutstanding	0	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	3080980	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	79578000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	64530000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	41854000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	80651000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	68036000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	57341000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	37149000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	24396000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	22322000	USD
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P3Y
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P3Y
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P3Y
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.170
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.180
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.160
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.028
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.032
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.031
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0163
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0260
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0215
CY2020Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	193100000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P4Y
CY2020	are	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Expected Period For Recognition Weighted Average Basis EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedExpectedPeriodForRecognitionWeightedAverageBasis	P19M
CY2020Q4	are	Disposal Group Including Assets Heldfor Sale Not Qualifyingas Discontinued Operations Areaof Real Estate DisposalGroupIncludingAssetsHeldforSaleNotQualifyingasDiscontinuedOperationsAreaofRealEstate	559993	sqft
CY2020	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	48100000	USD
CY2020Q4	are	Disposal Group Including Assets Heldfor Sale Not Qualifyingas Discontinued Operations Assets DisposalGroupIncludingAssetsHeldforSaleNotQualifyingasDiscontinuedOperationsAssets	117879000	USD
CY2019Q4	are	Disposal Group Including Assets Heldfor Sale Not Qualifyingas Discontinued Operations Assets DisposalGroupIncludingAssetsHeldforSaleNotQualifyingasDiscontinuedOperationsAssets	59412000	USD
CY2020Q4	are	Disposal Group Including Assets Heldfor Sale Not Qualifyingas Discontinued Operations Liabilities DisposalGroupIncludingAssetsHeldforSaleNotQualifyingasDiscontinuedOperationsLiabilities	33081000	USD
CY2019Q4	are	Disposal Group Including Assets Heldfor Sale Not Qualifyingas Discontinued Operations Liabilities DisposalGroupIncludingAssetsHeldforSaleNotQualifyingasDiscontinuedOperationsLiabilities	2860000	USD
CY2020Q4	are	Disposal Group Including Assets Heldfor Sale Not Qualifyingas Discontinued Operations Accumulated Other Comprehensive Income Loss DisposalGroupIncludingAssetsHeldforSaleNotQualifyingasDiscontinuedOperationsAccumulatedOtherComprehensiveIncomeLoss	841000	USD
CY2019Q4	are	Disposal Group Including Assets Heldfor Sale Not Qualifyingas Discontinued Operations Accumulated Other Comprehensive Income Loss DisposalGroupIncludingAssetsHeldforSaleNotQualifyingasDiscontinuedOperationsAccumulatedOtherComprehensiveIncomeLoss	-536000	USD
CY2020Q4	are	Disposal Group Including Assets Heldfor Sale Not Qualifyingas Discontinued Operations Net Assets DisposalGroupIncludingAssetsHeldforSaleNotQualifyingasDiscontinuedOperationsNetAssets	83957000	USD
CY2019Q4	are	Disposal Group Including Assets Heldfor Sale Not Qualifyingas Discontinued Operations Net Assets DisposalGroupIncludingAssetsHeldforSaleNotQualifyingasDiscontinuedOperationsNetAssets	57088000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	439919000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	436956000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	545042000	USD
CY2020Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	463720000	USD
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	16840000	USD
CY2020Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	226600000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	79326000	USD
CY2020Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	435923000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.14
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.82
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.64
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.26
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.14
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.82
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.63
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.26
CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	358842000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	373856000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	390484000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	408114000	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	123598000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	76330000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-49773000	USD
CY2019Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	199618000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.11
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.68
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.44
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.75
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.11
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.68
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.44
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.74
CY2020Q4	srt	Real Estate And Accumulated Depreciation Amount Of Encumbrances RealEstateAndAccumulatedDepreciationAmountOfEncumbrances	230925000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Land RealEstateAndAccumulatedDepreciationInitialCostOfLand	4200638000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	7319297000	USD
CY2020Q4	are	Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Of Building And Improvements RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionOfBuildingAndImprovements	9754875000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Land RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	4200638000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	17074172000	USD
CY2020Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	21274810000	USD
CY2020Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	3182438000	USD
CY2020Q4	us-gaap	Real Estate Investments RealEstateInvestments	18092372000	USD
CY2020Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	21300000000	USD
CY2020Q4	srt	Real Estate Federal Income Tax Basis RealEstateFederalIncomeTaxBasis	20400000000	USD
CY2020Q4	are	Investment In Real Estate Over Cost Basis Of Real Estate For Federal Income Tax Purpose InvestmentInRealEstateOverCostBasisOfRealEstateForFederalIncomeTaxPurpose	881300000	USD
CY2019Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	17552956000	USD
CY2018Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	14181780000	USD
CY2017Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	12178255000	USD
CY2020	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	2825537000	USD
CY2019	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	2240376000	USD
CY2018	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	1057036000	USD
CY2020	us-gaap	Real Estate Other Additions RealEstateOtherAdditions	1505152000	USD
CY2019	us-gaap	Real Estate Other Additions RealEstateOtherAdditions	1143035000	USD
CY2018	us-gaap	Real Estate Other Additions RealEstateOtherAdditions	959410000	USD
CY2020	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	608835000	USD
CY2019	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	12235000	USD
CY2018	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	12921000	USD
CY2020Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	21274810000	USD
CY2019Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	17552956000	USD
CY2018Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	14181780000	USD
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	2708918000	USD
CY2018Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	2268087000	USD
CY2017Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1880236000	USD
CY2020	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	530226000	USD
CY2019	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	448661000	USD
CY2018	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	390471000	USD
CY2020	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	56706000	USD
CY2019	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	7830000	USD
CY2018	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	2620000	USD
CY2020Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	3182438000	USD
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	2708918000	USD
CY2018Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	2268087000	USD

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$ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC. Stock $are

2020 Q4 Form 10-K Financial Statement

#000103544321000044 Filed on February 01, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ARE ALEXANDRIA REAL ESTATE EQUITIES, INC. Stock $are

2020 Q4 Form 10-K Financial Statement

#000103544321000044 Filed on February 01, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ARE
ALEXANDRIA REAL ESTATE EQUITIES, INC. Stock $are