$EXR
Extra Space Storage Inc. Stock $exr

$exr Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000162828024008044 Filed on February 29, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$799.5M	$797.8M	$2.560B
YoY Change	58.94%	57.44%	33.06%
Cost Of Revenue	$204.5M	$216.2M	$612.0M
YoY Change	74.55%	78.42%	40.59%
Gross Profit	$595.0M	$581.6M	$1.948B
YoY Change	54.2%	50.85%	30.86%
Gross Profit Margin	74.42%	72.9%	76.09%
Selling, General & Admin	$43.72M	$39.40M	$179.2M
YoY Change	25.77%	9.55%	20.65%
% of Gross Profit	7.35%	6.77%	9.2%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$197.0M	$196.1M	$506.1M
YoY Change	150.94%	145.42%	75.52%
% of Gross Profit	33.1%	33.73%	25.98%
Operating Expenses	$240.7M	$235.5M	$685.3M
YoY Change	112.52%	103.25%	56.86%
Operating Profit	$335.8M	$346.0M	$1.170B
YoY Change	27.43%	28.32%	11.4%
Interest Expense	$132.9M	-$101.7M	$419.0M
YoY Change	65.9%	127.7%	-486.85%
% of Operating Profit	39.57%	-29.4%	35.81%
Other Income/Expense, Net
YoY Change
Pretax Income	$215.8M	$231.7M	$817.2M
YoY Change	6.37%	3.04%	-9.27%
Income Tax	$6.742M	$4.321M	$21.56M
% Of Pretax Income	3.12%	1.86%	2.64%
Net Earnings	$213.1M	$215.8M	$803.2M
YoY Change	8.56%	5.82%	-6.68%
Net Earnings / Revenue	26.65%	27.05%	31.37%
Basic Earnings Per Share	$1.01		$4.74
Diluted Earnings Per Share	$1.01	$1.02	$4.74
COMMON SHARES
Basic Shares Outstanding	211.6M shares	211.3M shares	169.2M shares
Diluted Shares Outstanding	220.0M shares		169.2M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$50.82M	$99.06M	$99.06M
YoY Change	5.97%	6.67%	6.67%
Cash & Equivalents	$50.82M	$99.06M	$99.06M
Short-Term Investments
Other Short-Term Assets	$75.61M	$85.15M	$85.15M
YoY Change	36.05%
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$263.6M	$318.9M	$318.9M
YoY Change	154.62%	243.42%	243.42%
LONG-TERM ASSETS
Property, Plant & Equipment	$49.20M	$48.70M	$24.83B
YoY Change	12.55%	13.76%	141.97%
Goodwill	$170.8M	$170.8M
YoY Change	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments	$1.366B	$1.372B	$1.372B
YoY Change	42.79%	44.6%	44.6%
Other Assets	$4.570M	$6.021M	$6.021M
YoY Change	83.46%	23.71%	23.71%
Total Long-Term Assets	$27.22B	$27.14B	$27.14B
YoY Change	126.25%	124.75%	124.75%
TOTAL ASSETS
Total Short-Term Assets	$263.6M	$318.9M	$318.9M
Total Long-Term Assets	$27.22B	$27.14B	$27.14B
Total Assets	$27.48B	$27.46B	$27.46B
YoY Change	126.5%	125.65%	125.65%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$338.0M	$334.5M	$334.5M
YoY Change	89.74%	94.85%	94.85%
Accrued Expenses	$232.7M	$236.5M	$236.5M
YoY Change	-0.67%	3.27%	3.27%
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	$570.7M	$571.0M	$571.0M
YoY Change	38.38%	42.5%	42.5%
LONG-TERM LIABILITIES
Long-Term Debt	$11.16B	$11.02B	$11.16B
YoY Change	52.18%	50.27%	49.26%
Other Long-Term Liabilities	$462.9M	$454.5M	$310.9M
YoY Change	30.11%	27.32%	47.04%
Total Long-Term Liabilities	$11.62B	$11.47B	$11.47B
YoY Change	51.16%	49.2%	49.2%
TOTAL LIABILITIES
Total Short-Term Liabilities	$570.7M	$571.0M	$571.0M
Total Long-Term Liabilities	$11.62B	$11.47B	$11.47B
Total Liabilities	$12.19B	$12.04B	$13.07B
YoY Change	50.51%	48.87%	46.67%
SHAREHOLDERS EQUITY
Retained Earnings	-$510.2M	-$379.0M
YoY Change	219.73%	178.95%
Common Stock	$14.78B	$14.75B
YoY Change	337.53%	340.81%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$14.30B	$14.39B	$14.39B
YoY Change
Total Liabilities & Shareholders Equity	$27.48B	$27.46B	$27.46B
YoY Change	126.5%	125.65%	125.65%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$213.1M	$215.8M	$803.2M
YoY Change	8.56%	5.82%	-6.68%
Depreciation, Depletion And Amortization	$197.0M	$196.1M	$506.1M
YoY Change	150.94%	145.42%	75.52%
Cash From Operating Activities	$465.6M	$364.5M	$1.402B
YoY Change	65.3%	25.64%	13.27%
INVESTING ACTIVITIES
Capital Expenditures	$133.5M	$163.5M	$436.9M
YoY Change	96.32%	-18.42%	-68.26%
Acquisitions			$0.00
YoY Change			-100.0%
Other Investing Activities	-$148.6M	-$18.70M	-$1.381B
YoY Change	709.73%	-90.91%	407.64%
Cash From Investing Activities	-$282.1M	-$182.2M	-$1.818B
YoY Change	226.7%	-55.14%	10.3%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$0.00
YoY Change			-100.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$233.2M	-300.3M	$423.1M
YoY Change	-3.88%	-351.41%	-2.02%
NET CHANGE
Cash From Operating Activities	$465.6M	364.5M	$1.402B
Cash From Investing Activities	-$282.1M	-182.2M	-$1.818B
Cash From Financing Activities	-$233.2M	-300.3M	$423.1M
Net Change In Cash	-$49.70M	-118.0M	$7.348M
YoY Change	5.08%	-3591.22%	-65.89%
FREE CASH FLOW
Cash From Operating Activities	$465.6M	$364.5M	$1.402B
Capital Expenditures	$133.5M	$163.5M	$436.9M
Free Cash Flow	$332.1M	$201.0M	$965.6M
YoY Change	55.42%	124.1%	-798.67%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	1170141000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	1050402000	usd
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	975953000	usd
CY2023	exr	Interest Expense Excluding Amortization Of Debt Discount Premium InterestExpenseExcludingAmortizationOfDebtDiscountPremium	419035000	usd
CY2022	exr	Interest Expense Excluding Amortization Of Debt Discount Premium InterestExpenseExcludingAmortizationOfDebtDiscountPremium	219171000	usd
CY2021	exr	Interest Expense Excluding Amortization Of Debt Discount Premium InterestExpenseExcludingAmortizationOfDebtDiscountPremium	166183000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	921156000	usd
CY2021	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	56226000	usd
CY2023	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	2132000	usd
CY2022	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	39367000	usd
CY2023	exr	Payments For Investment In Unconsolidated Real Estate Entities PaymentsForInvestmentInUnconsolidatedRealEstateEntities	180279000	usd
CY2023	exr	Asset Acquisition Acquisition Related Costs AssetAcquisitionAcquisitionRelatedCosts	66732000	usd
CY2022	exr	Asset Acquisition Acquisition Related Costs AssetAcquisitionAcquisitionRelatedCosts	0	usd
CY2023	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	146408000	usd
CY2022	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	129251000	usd
CY2021	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	102194000	usd
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	506053000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	241879000	usd
CY2022	us-gaap	Costs And Expenses CostsAndExpenses	888017000	usd
CY2021	us-gaap	Costs And Expenses CostsAndExpenses	742169000	usd
CY2021	exr	Gains Losses On Real Estate Transactions And Earn Out From Prior Acquisition And Sale Of Other Assets GainsLossesOnRealEstateTransactionsAndEarnOutFromPriorAcquisitionAndSaleOfOtherAssets	140760000	usd
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0001289490
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#RealEstateInvestmentPropertyNet
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#RealEstateInvestmentPropertyNet
CY2023Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilities
CY2022Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilities
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	001-32269
CY2023	dei	Entity Registrant Name EntityRegistrantName	EXTRA SPACE STORAGE INC.
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	20-1076777
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	2795 East Cottonwood Parkway, Suite 300
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Salt Lake City
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	UT
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	84121
CY2023	dei	City Area Code CityAreaCode	801
CY2023	dei	Local Phone Number LocalPhoneNumber	365-4600
CY2023	dei	Security12b Title Security12bTitle	Common Stock, $0.01 par value
CY2023	dei	Trading Symbol TradingSymbol	EXR
CY2023	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	19343600223	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	211574552	shares
CY2023	dei	Auditor Firm AuditorFirmId	42
CY2023	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2023	dei	Auditor Location AuditorLocation	Salt Lake City, Utah
CY2023Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	24555873000	usd
CY2022Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	9997978000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	227241000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	221725000	usd
CY2023Q4	us-gaap	Real Estate Investments Unconsolidated Real Estate And Other Joint Ventures RealEstateInvestmentsUnconsolidatedRealEstateAndOtherJointVentures	1071617000	usd
CY2022Q4	us-gaap	Real Estate Investments Unconsolidated Real Estate And Other Joint Ventures RealEstateInvestmentsUnconsolidatedRealEstateAndOtherJointVentures	582412000	usd
CY2023Q4	exr	Debt Securities Held To Maturity And Financing Receivable After Allowance For Credit Loss And Interest Receivable DebtSecuritiesHeldToMaturityAndFinancingReceivableAfterAllowanceForCreditLossAndInterestReceivable	904769000	usd
CY2022Q4	exr	Debt Securities Held To Maturity And Financing Receivable After Allowance For Credit Loss And Interest Receivable DebtSecuritiesHeldToMaturityAndFinancingReceivableAfterAllowanceForCreditLossAndInterestReceivable	858049000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	99062000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	92868000	usd
CY2023Q4	us-gaap	Other Assets OtherAssets	597700000	usd
CY2022Q4	us-gaap	Other Assets OtherAssets	414426000	usd
CY2023Q4	us-gaap	Assets Assets	27456262000	usd
CY2022Q4	us-gaap	Assets Assets	12167458000	usd
CY2023Q4	us-gaap	Other Notes Payable OtherNotesPayable	1273549000	usd
CY2022Q4	us-gaap	Other Notes Payable OtherNotesPayable	1288555000	usd
CY2023Q4	us-gaap	Unsecured Debt UnsecuredDebt	2650581000	usd
CY2022Q4	us-gaap	Unsecured Debt UnsecuredDebt	2340116000	usd
CY2023Q4	us-gaap	Senior Notes SeniorNotes	6410618000	usd
CY2022Q4	us-gaap	Senior Notes SeniorNotes	2757791000	usd
CY2023Q4	us-gaap	Line Of Credit LineOfCredit	682000000	usd
CY2022Q4	us-gaap	Line Of Credit LineOfCredit	945000000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	236515000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	229035000	usd
CY2023Q4	exr	Cash Distributions In Unconsolidated Real Estate Ventures CashDistributionsInUnconsolidatedRealEstateVentures	71069000	usd
CY2022Q4	exr	Cash Distributions In Unconsolidated Real Estate Ventures CashDistributionsInUnconsolidatedRealEstateVentures	67352000	usd
CY2023Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	334518000	usd
CY2022Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	171680000	usd
CY2023Q4	us-gaap	Other Liabilities OtherLiabilities	383463000	usd
CY2022Q4	us-gaap	Other Liabilities OtherLiabilities	289655000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	12042313000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	8089184000	usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2023Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2022Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	211278803	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	211278803	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	133921020	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	133921020	shares
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	2113000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	1339000	usd
CY2023Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	14750388000	usd
CY2022Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	3345332000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	17435000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	48798000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-379015000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-135872000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	14390921000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	3259597000	usd
CY2023Q4	us-gaap	Minority Interest In Preferred Unit Holders MinorityInterestInPreferredUnitHolders	222360000	usd
CY2022Q4	us-gaap	Minority Interest In Preferred Unit Holders MinorityInterestInPreferredUnitHolders	261502000	usd
CY2023Q4	us-gaap	Minority Interest In Operating Partnerships MinorityInterestInOperatingPartnerships	800668000	usd
CY2022Q4	us-gaap	Minority Interest In Operating Partnerships MinorityInterestInOperatingPartnerships	557175000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	15413949000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4078274000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	27456262000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12167458000	usd
CY2023	us-gaap	Lease Income LeaseIncome	2222578000	usd
CY2022	us-gaap	Lease Income LeaseIncome	1654735000	usd
CY2021	us-gaap	Lease Income LeaseIncome	1340990000	usd
CY2023	us-gaap	Direct Premiums Earned DirectPremiumsEarned	235680000	usd
CY2022	us-gaap	Direct Premiums Earned DirectPremiumsEarned	185531000	usd
CY2021	us-gaap	Direct Premiums Earned DirectPremiumsEarned	170108000	usd
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	101986000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	83904000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	66264000	usd
CY2023	us-gaap	Revenues Revenues	2560244000	usd
CY2022	us-gaap	Revenues Revenues	1924170000	usd
CY2021	us-gaap	Revenues Revenues	1577362000	usd
CY2023	us-gaap	Cost Of Revenue CostOfRevenue	612036000	usd
CY2022	us-gaap	Cost Of Revenue CostOfRevenue	435342000	usd
CY2021	us-gaap	Cost Of Revenue CostOfRevenue	368608000	usd
CY2023	exr	Tenant Reinsurance Expense TenantReinsuranceExpense	58874000	usd
CY2022	exr	Tenant Reinsurance Expense TenantReinsuranceExpense	33560000	usd
CY2021	exr	Tenant Reinsurance Expense TenantReinsuranceExpense	29488000	usd
CY2023	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	usd
CY2022	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1548000	usd
CY2021	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	usd
CY2021	exr	Asset Acquisition Acquisition Related Costs AssetAcquisitionAcquisitionRelatedCosts	0	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	288316000	usd
CY2022	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	0	usd
CY2021	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	0	usd
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	49703000	usd
CY2023	exr	Equity Method Investments Gain Loss On Sale Of Real Estate Assets And Purchase Of Joint Venture Partner Interest EquityMethodInvestmentsGainLossOnSaleOfRealEstateAssetsAndPurchaseOfJointVenturePartnerInterest	0	usd
CY2022	exr	Equity Method Investments Gain Loss On Sale Of Real Estate Assets And Purchase Of Joint Venture Partner Interest EquityMethodInvestmentsGainLossOnSaleOfRealEstateAssetsAndPurchaseOfJointVenturePartnerInterest	0	usd
CY2021	exr	Equity Method Investments Gain Loss On Sale Of Real Estate Assets And Purchase Of Joint Venture Partner Interest EquityMethodInvestmentsGainLossOnSaleOfRealEstateAssetsAndPurchaseOfJointVenturePartnerInterest	6251000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20324000	usd
CY2023	exr	Minority Interest In Net Income Loss Operating Partnerships And Other MinorityInterestInNetIncomeLossOperatingPartnershipsAndOther	38244000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	803198000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	860688000	usd
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.74
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.41
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.20
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.74
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.41
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.19
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	169216989	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	134050815	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	133374938	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	169220882	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	141681388	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	140016028	shares
CY2022	us-gaap	Profit Loss ProfitLoss	921156000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	877758000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-32752000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	96249000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	59325000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	817701000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1017405000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	937083000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	45866000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	65373000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	52887000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	771835000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	952032000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	884196000	usd
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2936124000	usd
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	4572000	usd
CY2021	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	17303000	usd
CY2021	exr	Noncontrolling Interest Repayment Of Receivable With Operating Partnership Units Pledged As Collateral NoncontrollingInterestRepaymentOfReceivableWithOperatingPartnershipUnitsPledgedAsCollateral	411000	usd
CY2021	exr	Noncontrolling Interest Increase From Acquisitions NoncontrollingInterestIncreaseFromAcquisitions	188319000	usd
CY2021	exr	Adjustments To Additional Paid In Capital Purchase Of Remaining Equity Interest In Consolidated Joint Venture AdjustmentsToAdditionalPaidInCapitalPurchaseOfRemainingEquityInterestInConsolidatedJointVenture	18141000	usd
CY2021	exr	Noncontrolling Interest Increase From Transactions With Other Noncontrolling Interests Net NoncontrollingInterestIncreaseFromTransactionsWithOtherNoncontrollingInterestsNet	-82000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	877758000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	59325000	usd
CY2021	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	39094000	usd
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	4.50
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	600994000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3785976000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3785976000	usd
CY2022	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	21388000	usd
CY2022	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	16000000	usd
CY2022	exr	Noncontrolling Interest Increase From Acquisitions NoncontrollingInterestIncreaseFromAcquisitions	125000000	usd
CY2022	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	40963000	usd
CY2022	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	63008000	usd
CY2022	exr	Noncontrolling Interest Increase From Transactions With Other Noncontrolling Interests Net NoncontrollingInterestIncreaseFromTransactionsWithOtherNoncontrollingInterestsNet	771000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	921156000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	96249000	usd
CY2022	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	57793000	usd
CY2022	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	6.00
CY2022	us-gaap	Dividends Common Stock DividendsCommonStock	805311000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4078274000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4078274000	usd
CY2023	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	26638000	usd
CY2023	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	7640000	usd
CY2023	exr	Noncontrolling Interest Operating Partnership Units Issued With Asset Acquisition Value NoncontrollingInterestOperatingPartnershipUnitsIssuedWithAssetAcquisitionValue	11602808000	usd
CY2023	exr	Noncontrolling Interest Increase From Transactions With Other Noncontrolling Interests Net NoncontrollingInterestIncreaseFromTransactionsWithOtherNoncontrollingInterestsNet	7959000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	850453000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-32752000	usd
CY2023	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	59649000	usd
CY2023	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	6.48
CY2023	us-gaap	Dividends Common Stock DividendsCommonStock	1046341000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	15413949000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	850453000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	877758000	usd
CY2023	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	506053000	usd
CY2022	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	288316000	usd
CY2021	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	241879000	usd
CY2023	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	18949000	usd
CY2022	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	8773000	usd
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	10587000	usd
CY2023	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	18786000	usd
CY2022	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	0	usd
CY2021	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	0	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	26638000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	21386000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	17303000	usd
CY2022	exr	Noncash Interest Income NoncashInterestIncome	38412000	usd
CY2021	exr	Noncash Interest Income NoncashInterestIncome	34550000	usd
CY2023	exr	Noncash Interest Income NoncashInterestIncome	37907000	usd
CY2023	exr	Gains Losses On Real Estate Transactions Net Of Impairment Of Real Estate GainsLossesOnRealEstateTransactionsNetOfImpairmentOfRealEstate	0	usd
CY2022	exr	Gains Losses On Real Estate Transactions Net Of Impairment Of Real Estate GainsLossesOnRealEstateTransactionsNetOfImpairmentOfRealEstate	14249000	usd
CY2021	exr	Gains Losses On Real Estate Transactions Net Of Impairment Of Real Estate GainsLossesOnRealEstateTransactionsNetOfImpairmentOfRealEstate	140760000	usd
CY2023	exr	Gain Loss From Unconsolidated Real Estate Joint Ventures Gain Loss On Sale Of Real Estate GainLossFromUnconsolidatedRealEstateJointVenturesGainLossOnSaleOfRealEstate	0	usd
CY2022	exr	Gain Loss From Unconsolidated Real Estate Joint Ventures Gain Loss On Sale Of Real Estate GainLossFromUnconsolidatedRealEstateJointVenturesGainLossOnSaleOfRealEstate	0	usd
CY2021	exr	Gain Loss From Unconsolidated Real Estate Joint Ventures Gain Loss On Sale Of Real Estate GainLossFromUnconsolidatedRealEstateJointVenturesGainLossOnSaleOfRealEstate	6251000	usd
CY2023	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-20060000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-13162000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-7035000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	32507000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-695000	usd
CY2023	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	35031000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-9494000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1238139000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	952436000	usd
CY2023	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	320711000	usd
CY2022	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	1291491000	usd
CY2021	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	1233298000	usd
CY2023	exr	Payments For Asset Acquisition Net Of Cash Acquired PaymentsForAssetAcquisitionNetOfCashAcquired	1182411000	usd
CY2022	exr	Payments For Asset Acquisition Net Of Cash Acquired PaymentsForAssetAcquisitionNetOfCashAcquired	0	usd
CY2021	exr	Payments For Asset Acquisition Net Of Cash Acquired PaymentsForAssetAcquisitionNetOfCashAcquired	0	usd
CY2023	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	usd
CY2022	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	157302000	usd
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	usd
CY2023	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	100181000	usd
CY2022	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	62019000	usd
CY2021	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	572728000	usd
CY2022	exr	Payments For Investment In Unconsolidated Real Estate Entities PaymentsForInvestmentInUnconsolidatedRealEstateEntities	118963000	usd
CY2021	exr	Payments For Investment In Unconsolidated Real Estate Entities PaymentsForInvestmentInUnconsolidatedRealEstateEntities	54602000	usd
CY2023	exr	Return Of Investment Real Estate Ventures ReturnOfInvestmentRealEstateVentures	0	usd
CY2022	exr	Return Of Investment Real Estate Ventures ReturnOfInvestmentRealEstateVentures	342000	usd
CY2021	exr	Return Of Investment Real Estate Ventures ReturnOfInvestmentRealEstateVentures	31534000	usd
CY2023	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	330499000	usd
CY2022	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	529245000	usd
CY2021	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	317482000	usd
CY2023	us-gaap	Proceeds From Sale Of Notes Receivable ProceedsFromSaleOfNotesReceivable	167495000	usd
CY2022	us-gaap	Proceeds From Sale Of Notes Receivable ProceedsFromSaleOfNotesReceivable	210048000	usd
CY2021	us-gaap	Proceeds From Sale Of Notes Receivable ProceedsFromSaleOfNotesReceivable	172002000	usd
CY2023	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	142192000	usd
CY2022	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	283636000	usd
CY2021	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	51463000	usd
CY2023	us-gaap	Payments To Acquire Furniture And Fixtures PaymentsToAcquireFurnitureAndFixtures	15994000	usd
CY2022	us-gaap	Payments To Acquire Furniture And Fixtures PaymentsToAcquireFurnitureAndFixtures	22832000	usd
CY2021	us-gaap	Payments To Acquire Furniture And Fixtures PaymentsToAcquireFurnitureAndFixtures	3659000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1818256000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1648459000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-837540000	usd
CY2023	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	usd
CY2022	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	usd
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	273189000	usd
CY2023	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	8663003000	usd
CY2022	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	5584111000	usd
CY2021	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	5706981000	usd
CY2023	us-gaap	Repayments Of Debt RepaymentsOfDebt	7088984000	usd
CY2022	us-gaap	Repayments Of Debt RepaymentsOfDebt	4207700000	usd
CY2021	us-gaap	Repayments Of Debt RepaymentsOfDebt	5500290000	usd
CY2023	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	39418000	usd
CY2022	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	9321000	usd
CY2021	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	10698000	usd
CY2023	exr	Proceeds From Notes Receivable Collateralized By Noncontrolling Interest ProceedsFromNotesReceivableCollateralizedByNoncontrollingInterest	0	usd
CY2022	exr	Proceeds From Notes Receivable Collateralized By Noncontrolling Interest ProceedsFromNotesReceivableCollateralizedByNoncontrollingInterest	0	usd
CY2021	exr	Proceeds From Notes Receivable Collateralized By Noncontrolling Interest ProceedsFromNotesReceivableCollateralizedByNoncontrollingInterest	411000	usd
CY2023	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	usd
CY2022	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	usd
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	4572000	usd
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	63008000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	usd
CY2023	exr	Cash Portion Of Redemption Of Preferred Operating Partnership Units CashPortionOfRedemptionOfPreferredOperatingPartnershipUnits	5377000	usd
CY2022	exr	Cash Portion Of Redemption Of Preferred Operating Partnership Units CashPortionOfRedemptionOfPreferredOperatingPartnershipUnits	4500000	usd
CY2021	exr	Cash Portion Of Redemption Of Preferred Operating Partnership Units CashPortionOfRedemptionOfPreferredOperatingPartnershipUnits	0	usd
CY2023	exr	Cash Portion Of Redemption Of Operating Partnership Units CashPortionOfRedemptionOfOperatingPartnershipUnits	108000	usd
CY2022	exr	Cash Portion Of Redemption Of Operating Partnership Units CashPortionOfRedemptionOfOperatingPartnershipUnits	4617000	usd
CY2021	exr	Cash Portion Of Redemption Of Operating Partnership Units CashPortionOfRedemptionOfOperatingPartnershipUnits	788000	usd
CY2023	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	74000	usd
CY2022	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	usd
CY2021	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	usd
CY2023	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	70000	usd
CY2022	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	usd
CY2021	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	600994000	usd
CY2022	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	57793000	usd
CY2021	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	39094000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	423130000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	431861000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-166711000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	7348000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	21541000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-51815000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	97735000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	76194000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	128009000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	105083000	usd
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	109124000	usd
CY2021Q4	us-gaap	Restricted Cash RestrictedCash	5068000	usd
CY2020Q4	us-gaap	Restricted Cash RestrictedCash	18885000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	97735000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	76194000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	128009000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	99062000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	92868000	usd
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	71126000	usd
CY2023Q4	us-gaap	Restricted Cash RestrictedCash	6021000	usd
CY2022Q4	us-gaap	Restricted Cash RestrictedCash	4867000	usd
CY2021Q4	us-gaap	Restricted Cash RestrictedCash	5068000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	105083000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	97735000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	76194000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	338552000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	197069000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	152170000	usd
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	22753000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	18957000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	26252000	usd
CY2023	exr	Noncontrolling Interest Increase Decrease From Redemptions Of Operating Partnership Units NoncontrollingInterestIncreaseDecreaseFromRedemptionsOfOperatingPartnershipUnits	-116336000	usd
CY2022	exr	Noncontrolling Interest Increase Decrease From Redemptions Of Operating Partnership Units NoncontrollingInterestIncreaseDecreaseFromRedemptionsOfOperatingPartnershipUnits	0	usd
CY2021	exr	Noncontrolling Interest Increase Decrease From Redemptions Of Operating Partnership Units NoncontrollingInterestIncreaseDecreaseFromRedemptionsOfOperatingPartnershipUnits	-6373000	usd
CY2023	exr	Redemption Of Operating Partnership Units Held By Noncontrolling Interest Including Additional Paid In Capital RedemptionOfOperatingPartnershipUnitsHeldByNoncontrollingInterestIncludingAdditionalPaidInCapital	16336000	usd
CY2022	exr	Redemption Of Operating Partnership Units Held By Noncontrolling Interest Including Additional Paid In Capital RedemptionOfOperatingPartnershipUnitsHeldByNoncontrollingInterestIncludingAdditionalPaidInCapital	0	usd
CY2021	exr	Redemption Of Operating Partnership Units Held By Noncontrolling Interest Including Additional Paid In Capital RedemptionOfOperatingPartnershipUnitsHeldByNoncontrollingInterestIncludingAdditionalPaidInCapital	6373000	usd
CY2023	exr	Noncontrolling Interests In Operating Partnership Note Receivable Payoff NoncontrollingInterestsInOperatingPartnershipNoteReceivablePayoff	100000000	usd
CY2022	exr	Noncontrolling Interests In Operating Partnership Note Receivable Payoff NoncontrollingInterestsInOperatingPartnershipNoteReceivablePayoff	0	usd
CY2021	exr	Noncontrolling Interests In Operating Partnership Note Receivable Payoff NoncontrollingInterestsInOperatingPartnershipNoteReceivablePayoff	0	usd
CY2023	exr	Conversion Of Stock Amount Converted Net ConversionOfStockAmountConvertedNet	33604000	usd
CY2022	exr	Conversion Of Stock Amount Converted Net ConversionOfStockAmountConvertedNet	0	usd
CY2021	exr	Conversion Of Stock Amount Converted Net ConversionOfStockAmountConvertedNet	2834000	usd
CY2023	exr	Redemption Of Operating Partnership Units For Common Stock Including Additional Paid In Capital RedemptionOfOperatingPartnershipUnitsForCommonStockIncludingAdditionalPaidInCapital	33604000	usd
CY2022	exr	Redemption Of Operating Partnership Units For Common Stock Including Additional Paid In Capital RedemptionOfOperatingPartnershipUnitsForCommonStockIncludingAdditionalPaidInCapital	0	usd
CY2021	exr	Redemption Of Operating Partnership Units For Common Stock Including Additional Paid In Capital RedemptionOfOperatingPartnershipUnitsForCommonStockIncludingAdditionalPaidInCapital	2834000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	265000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	16298000	usd
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	6655000	usd
CY2023	exr	Establishment Of Operating Lease Liability EstablishmentOfOperatingLeaseLiability	265000	usd
CY2022	exr	Establishment Of Operating Lease Liability EstablishmentOfOperatingLeaseLiability	16298000	usd
CY2021	exr	Establishment Of Operating Lease Liability EstablishmentOfOperatingLeaseLiability	6655000	usd
CY2023	exr	Noncash Or Part Noncash Acquisition Net Real Estate Assets Acquired NoncashOrPartNoncashAcquisitionNetRealEstateAssetsAcquired	0	usd
CY2022	exr	Noncash Or Part Noncash Acquisition Net Real Estate Assets Acquired NoncashOrPartNoncashAcquisitionNetRealEstateAssetsAcquired	171703000	usd
CY2021	exr	Noncash Or Part Noncash Acquisition Net Real Estate Assets Acquired NoncashOrPartNoncashAcquisitionNetRealEstateAssetsAcquired	318036000	usd
CY2023	exr	Issuance Of Equity For Acquisition Of Real Estate Assets IssuanceOfEquityForAcquisitionOfRealEstateAssets	0	usd
CY2022	exr	Issuance Of Equity For Acquisition Of Real Estate Assets IssuanceOfEquityForAcquisitionOfRealEstateAssets	165965000	usd
CY2021	exr	Issuance Of Equity For Acquisition Of Real Estate Assets IssuanceOfEquityForAcquisitionOfRealEstateAssets	276393000	usd
CY2023	exr	Asset Acquisition Real Estate Assets Net Liabilities Assumed AssetAcquisitionRealEstateAssetsNetLiabilitiesAssumed	0	usd
CY2022	exr	Asset Acquisition Real Estate Assets Net Liabilities Assumed AssetAcquisitionRealEstateAssetsNetLiabilitiesAssumed	0	usd
CY2021	exr	Asset Acquisition Real Estate Assets Net Liabilities Assumed AssetAcquisitionRealEstateAssetsNetLiabilitiesAssumed	20028000	usd
CY2023	exr	Investments In Real Estate Joint Ventures Net Of Distributions Received InvestmentsInRealEstateJointVenturesNetOfDistributionsReceived	0	usd
CY2022	exr	Investments In Real Estate Joint Ventures Net Of Distributions Received InvestmentsInRealEstateJointVenturesNetOfDistributionsReceived	1085000	usd
CY2021	exr	Investments In Real Estate Joint Ventures Net Of Distributions Received InvestmentsInRealEstateJointVenturesNetOfDistributionsReceived	5383000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	0	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	6823000	usd
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	26998000	usd
CY2023	exr	Asset Acquisition Real Estate Assets Net AssetAcquisitionRealEstateAssetsNet	13575501000	usd
CY2022	exr	Asset Acquisition Real Estate Assets Net AssetAcquisitionRealEstateAssetsNet	0	usd
CY2021	exr	Asset Acquisition Real Estate Assets Net AssetAcquisitionRealEstateAssetsNet	0	usd
CY2023	exr	Asset Acquisition Unsecured Senior Notes AssetAcquisitionUnsecuredSeniorNotes	2106866000	usd
CY2022	exr	Asset Acquisition Unsecured Senior Notes AssetAcquisitionUnsecuredSeniorNotes	0	usd
CY2021	exr	Asset Acquisition Unsecured Senior Notes AssetAcquisitionUnsecuredSeniorNotes	0	usd
CY2023	exr	Asset Acquisition Accounts Payable Accrued Expenses And Other Liabilities AssetAcquisitionAccountsPayableAccruedExpensesAndOtherLiabilities	191077000	usd
CY2022	exr	Asset Acquisition Accounts Payable Accrued Expenses And Other Liabilities AssetAcquisitionAccountsPayableAccruedExpensesAndOtherLiabilities	0	usd
CY2021	exr	Asset Acquisition Accounts Payable Accrued Expenses And Other Liabilities AssetAcquisitionAccountsPayableAccruedExpensesAndOtherLiabilities	0	usd
CY2023	exr	Asset Acquisition Equity Interests In Joint Venture Partnerships AssetAcquisitionEquityInterestsInJointVenturePartnerships	325250000	usd
CY2022	exr	Asset Acquisition Equity Interests In Joint Venture Partnerships AssetAcquisitionEquityInterestsInJointVenturePartnerships	0	usd
CY2021	exr	Asset Acquisition Equity Interests In Joint Venture Partnerships AssetAcquisitionEquityInterestsInJointVenturePartnerships	0	usd
CY2023	exr	Real Estate Additions Portion Not Yet Paid RealEstateAdditionsPortionNotYetPaid	10508000	usd
CY2022	exr	Real Estate Additions Portion Not Yet Paid RealEstateAdditionsPortionNotYetPaid	368000	usd
CY2021	exr	Real Estate Additions Portion Not Yet Paid RealEstateAdditionsPortionNotYetPaid	1323000	usd
CY2023	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	10508000	usd
CY2022	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	368000	usd
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1323000	usd
CY2023	exr	Establishment Of Finance Lease Asset EstablishmentOfFinanceLeaseAsset	0	usd
CY2022	exr	Establishment Of Finance Lease Asset EstablishmentOfFinanceLeaseAsset	0	usd
CY2021	exr	Establishment Of Finance Lease Asset EstablishmentOfFinanceLeaseAsset	67992000	usd
CY2023	exr	Establishment Of Finance Lease Liability EstablishmentOfFinanceLeaseLiability	0	usd
CY2022	exr	Establishment Of Finance Lease Liability EstablishmentOfFinanceLeaseLiability	0	usd
CY2021	exr	Establishment Of Finance Lease Liability EstablishmentOfFinanceLeaseLiability	-67992000	usd
CY2023	us-gaap	Nature Of Operations NatureOfOperations	DESCRIPTION OF BUSINESS<div style="margin-top:6pt;text-indent:24.75pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Extra Space Storage Inc. (the “Company”) is a fully integrated, self-administered and self-managed real estate investment trust (“REIT”), formed as a Maryland corporation on April 30, 2004, to own, operate, manage, acquire, develop and redevelop professionally managed self-storage properties located throughout the United States. The Company was formed to continue the business of Extra Space Storage LLC and its subsidiaries, which had engaged in the self-storage business since 1977. The Company’s interest in its stores is held through its operating partnership, Extra Space Storage LP (the “Operating Partnership”), which was formed on May 5, 2004. The Company’s primary assets are general partner and limited partner interests in the Operating Partnership. This structure is commonly referred to as an umbrella partnership REIT, or UPREIT. </span></div><div style="margin-top:12pt;text-indent:24.75pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company invests in stores by acquiring wholly-owned stores or by acquiring an equity interest in real estate entities. At December 31, 2023, the Company had direct and indirect equity interests in 2,377 storage facilities. In addition, the Company managed 1,337 stores for third parties bringing the total number of stores which it owns and/or manages to 3,714. These stores are located in 42 states and Washington, D.C. The Company also offers tenant reinsurance at its owned and managed stores that insures the value of goods in the storage units.</span></div>
CY2023Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	2377	store
CY2023Q4	exr	Number Of Real Estate Properties Franchisees And Others NumberOfRealEstatePropertiesFranchiseesAndOthers	1337	store
CY2023Q4	exr	Number Of Real Estate Properties Owned And Or Managed NumberOfRealEstatePropertiesOwnedAndOrManaged	3714	store
CY2023Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	42	state
CY2023Q4	exr	Number Of Consolidated Variable Interest Entities NumberOfConsolidatedVariableInterestEntities	1	variable_interest_entity
CY2023Q4	exr	Variable Interest Entity Number Of Stores VariableInterestEntityNumberOfStores	1	store
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-top:6pt;text-indent:24.75pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</span></div>
CY2023	exr	Number Of Leased Properties That Cannot Be Classified As Ground Or Building Leases NumberOfLeasedPropertiesThatCannotBeClassifiedAsGroundOrBuildingLeases	3	store
CY2023	exr	Number Of Properties Related To Ground Leases Assumed By The Entity At Rates Lower Than Current Market Rates NumberOfPropertiesRelatedToGroundLeasesAssumedByTheEntityAtRatesLowerThanCurrentMarketRates	9	store
CY2023	exr	Economic Risk Number Of Components EconomicRiskNumberOfComponents	3	item
CY2023Q4	exr	Tenant Reinsurance Policy Maximum Amount Of Insurance Coverage TenantReinsurancePolicyMaximumAmountOfInsuranceCoverage	10000	usd
CY2023	exr	Number Of Claims Made Under Tenant Reinsurance Program NumberOfClaimsMadeUnderTenantReinsuranceProgram	1000000	claim
CY2023Q4	exr	Tenant Reinsurance Policy Average Amount Of Insurance Coverage TenantReinsurancePolicyAverageAmountOfInsuranceCoverage	3000000000	usd
CY2023	us-gaap	Advertising Expense AdvertisingExpense	32795000	usd
CY2022	us-gaap	Advertising Expense AdvertisingExpense	19285000	usd
CY2021	us-gaap	Advertising Expense AdvertisingExpense	18793000	usd
CY2023	exr	Percentage Of All Distributions To Stockholders Which Classifies As Return Of Capital PercentageOfAllDistributionsToStockholdersWhichClassifiesAsReturnOfCapital	0
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	usd
CY2023	exr	Average Share Price Per Share AverageSharePricePerShare	142.16
CY2023	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	9538666	shares
CY2022	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1328177	shares
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	972655	shares
CY2023	us-gaap	Net Income Loss NetIncomeLoss	803198000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	860688000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	827649000	usd
CY2023	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	1230000	usd
CY2022	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	1201000	usd
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	1183000	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	801968000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	859487000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	826466000	usd
CY2023	exr	Net Income Loss Attributable To Noncontrolling Interest In Operating Partnership NetIncomeLossAttributableToNoncontrollingInterestInOperatingPartnership	0	usd
CY2022	exr	Net Income Loss Attributable To Noncontrolling Interest In Operating Partnership NetIncomeLossAttributableToNoncontrollingInterestInOperatingPartnership	50706000	usd
CY2021	exr	Net Income Loss Attributable To Noncontrolling Interest In Operating Partnership NetIncomeLossAttributableToNoncontrollingInterestInOperatingPartnership	43093000	usd
CY2023	exr	Income Loss Attributable To Noncontrolling Interest Fixed Component IncomeLossAttributableToNoncontrollingInterestFixedComponent	0	usd
CY2022	exr	Income Loss Attributable To Noncontrolling Interest Fixed Component IncomeLossAttributableToNoncontrollingInterestFixedComponent	2288000	usd
CY2021	exr	Income Loss Attributable To Noncontrolling Interest Fixed Component IncomeLossAttributableToNoncontrollingInterestFixedComponent	2288000	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	801968000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	907905000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	867271000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	169216989	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	134050815	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	133374938	shares
CY2023	exr	Incremental Common Shares Attributable To Conversion Of Operating Partnership Units IncrementalCommonSharesAttributableToConversionOfOperatingPartnershipUnits	0	shares
CY2022	exr	Incremental Common Shares Attributable To Conversion Of Operating Partnership Units IncrementalCommonSharesAttributableToConversionOfOperatingPartnershipUnits	6749995	shares
CY2021	exr	Incremental Common Shares Attributable To Conversion Of Operating Partnership Units IncrementalCommonSharesAttributableToConversionOfOperatingPartnershipUnits	5752902	shares
CY2023	exr	Incremental Common Shares Attributable To Share Based Payment Arrangements Stock Options IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsStockOptions	3893	shares
CY2022	exr	Incremental Common Shares Attributable To Share Based Payment Arrangements Stock Options IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsStockOptions	5098	shares
CY2021	exr	Incremental Common Shares Attributable To Share Based Payment Arrangements Stock Options IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsStockOptions	12708	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	169220882	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	141681388	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	140016028	shares
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.74
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.41
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.20
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.74
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.41
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.19
CY2023Q4	us-gaap	Land Land	4904705000	usd
CY2022Q4	us-gaap	Land Land	2356746000	usd
CY2023Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	21664224000	usd
CY2022Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	9425468000	usd
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	143842000	usd
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	136259000	usd
CY2023Q4	exr	Real Estate Investment Property Intangible Tenant Relationships RealEstateInvestmentPropertyIntangibleTenantRelationships	321019000	usd
CY2022Q4	exr	Real Estate Investment Property Intangible Tenant Relationships RealEstateInvestmentPropertyIntangibleTenantRelationships	152775000	usd
CY2023Q4	exr	Real Estate Investment Property Intangible Lease Rights RealEstateInvestmentPropertyIntangibleLeaseRights	27743000	usd
CY2022Q4	exr	Real Estate Investment Property Intangible Lease Rights RealEstateInvestmentPropertyIntangibleLeaseRights	12943000	usd
CY2023Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	27061533000	usd
CY2022Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	12084191000	usd
CY2023Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	2624405000	usd
CY2022Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	2138524000	usd
CY2023Q4	exr	Net Operating Real Estate Assets NetOperatingRealEstateAssets	24437128000	usd
CY2022Q4	exr	Net Operating Real Estate Assets NetOperatingRealEstateAssets	9945667000	usd
CY2023Q4	us-gaap	Development In Process DevelopmentInProcess	118745000	usd
CY2022Q4	us-gaap	Development In Process DevelopmentInProcess	52311000	usd
CY2023Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	24555873000	usd
CY2023Q4	us-gaap	Sec Schedule Iii Real Estate Investment Property Net SECScheduleIIIRealEstateInvestmentPropertyNet	24555873000	usd
CY2022Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	9997978000	usd
CY2023Q4	us-gaap	Real Estate Heldforsale RealEstateHeldforsale	0	usd
CY2022Q4	us-gaap	Real Estate Heldforsale RealEstateHeldforsale	0	usd
CY2023Q4	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P18M
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	59807000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	13981000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4778000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	317511000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	144144000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	170811000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	170811000	usd
CY2023Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	134716000	usd
CY2022Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	85937000	usd
CY2023Q4	exr	Prepaid Expense And Deposits PrepaidExpenseAndDeposits	85153000	usd
CY2022Q4	exr	Prepaid Expense And Deposits PrepaidExpenseAndDeposits	50318000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	66332000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	0	usd
CY2023Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	50000000	usd
CY2022Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	0	usd
CY2023Q4	us-gaap	Derivative Assets DerivativeAssets	26183000	usd
CY2022Q4	us-gaap	Derivative Assets DerivativeAssets	54839000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	48697000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	42808000	usd
CY2023Q4	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	9787000	usd
CY2022Q4	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	4846000	usd
CY2023Q4	us-gaap	Restricted Cash RestrictedCash	6021000	usd
CY2022Q4	us-gaap	Restricted Cash RestrictedCash	4867000	usd
CY2023Q4	us-gaap	Other Assets OtherAssets	597700000	usd
CY2022Q4	us-gaap	Other Assets OtherAssets	414426000	usd
CY2023	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	14	store
CY2023	exr	Real Estate Property Asset Acquisition Consideration Transferred RealEstatePropertyAssetAcquisitionConsiderationTransferred	147729000	usd
CY2023	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	135577000	usd
CY2023	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	12000000	usd
CY2023	exr	Noncash Or Part Noncash Acquisition Finance Lease Liability NoncashOrPartNoncashAcquisitionFinanceLeaseLiability	0	usd
CY2023	exr	Asset Acquisition Consideration Transferred Investment In Real Estate Joint Ventures AssetAcquisitionConsiderationTransferredInvestmentInRealEstateJointVentures	0	usd
CY2023	us-gaap	Asset Acquisition Consideration Transferred Other Assets AssetAcquisitionConsiderationTransferredOtherAssets	-152000	usd
CY2023	exr	Real Estate Property Asset Acquisition Consideration Transferred Equity Interest Issued Or Issuable RealEstatePropertyAssetAcquisitionConsiderationTransferredEquityInterestIssuedOrIssuable	0	usd
CY2023	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	147729000	usd
CY2022	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	153	store
CY2022	exr	Real Estate Property Asset Acquisition Consideration Transferred RealEstatePropertyAssetAcquisitionConsiderationTransferred	1366348000	usd
CY2022	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1193261000	usd
CY2022	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	usd
CY2022	exr	Noncash Or Part Noncash Acquisition Finance Lease Liability NoncashOrPartNoncashAcquisitionFinanceLeaseLiability	6823000	usd
CY2022	exr	Asset Acquisition Consideration Transferred Investment In Real Estate Joint Ventures AssetAcquisitionConsiderationTransferredInvestmentInRealEstateJointVentures	1085000	usd
CY2022	us-gaap	Asset Acquisition Consideration Transferred Other Assets AssetAcquisitionConsiderationTransferredOtherAssets	786000	usd
CY2022	exr	Real Estate Property Asset Acquisition Consideration Transferred Equity Interest Issued Or Issuable RealEstatePropertyAssetAcquisitionConsiderationTransferredEquityInterestIssuedOrIssuable	165965000	usd
CY2022	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	1366348000	usd
CY2022Q3	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	590000000	usd
CY2022Q3	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	106	store
CY2022Q3	exr	Number Of Parcels Of Land Acquired NumberOfParcelsOfLandAcquired	8	store
CY2022	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	1930816000	usd
CY2021	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	1592021000	usd
CY2022Q2	exr	Number Of Stores Disposed NumberOfStoresDisposed	1	store
CY2022Q2	exr	Number Of Stores Disposed NumberOfStoresDisposed	1	store
CY2022Q2	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	38700000	usd
CY2022Q2	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	14200000	usd
CY2021Q1	us-gaap	Equity Method Investments EquityMethodInvestments	33878000	usd
CY2023Q4	exr	Equity Method Investment Number Of Stores EquityMethodInvestmentNumberOfStores	472	property
CY2023Q4	exr	Investment In Unconsolidated Real Estate Entities Net Of Distributions InvestmentInUnconsolidatedRealEstateEntitiesNetOfDistributions	1000548000	usd
CY2022Q4	exr	Investment In Unconsolidated Real Estate Entities Net Of Distributions InvestmentInUnconsolidatedRealEstateEntitiesNetOfDistributions	515060000	usd
CY2021Q2	exr	Equity Method Investments Number Of Investments Sold EquityMethodInvestmentsNumberOfInvestmentsSold	2	joint_venture
CY2021Q2	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	1888000	usd
CY2021Q2	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	525000	usd
CY2021Q2	exr	Equity Method Investments Number Of Investments Purchased EquityMethodInvestmentsNumberOfInvestmentsPurchased	2	joint_venture
CY2023	exr	Equity Method Investments Number Of Investments Purchased EquityMethodInvestmentsNumberOfInvestmentsPurchased	17	joint_venture
CY2023	exr	Equity Method Investment Number Of Store Acquired EquityMethodInvestmentNumberOfStoreAcquired	146	store
CY2023Q4	us-gaap	Equity Method Investment Aggregate Cost EquityMethodInvestmentAggregateCost	305921000	usd
CY2023	exr	Equity Method Investments Number Of Stores Acquired EquityMethodInvestmentsNumberOfStoresAcquired	9	store
CY2023	us-gaap	Payments To Acquire Real Estate And Real Estate Joint Ventures PaymentsToAcquireRealEstateAndRealEstateJointVentures	27583000	usd
CY2023	exr	Income Loss And Dividend Income From Unconsolidated Real Estate Entities IncomeLossAndDividendIncomeFromUnconsolidatedRealEstateEntities	54835000	usd
CY2022	exr	Income Loss And Dividend Income From Unconsolidated Real Estate Entities IncomeLossAndDividendIncomeFromUnconsolidatedRealEstateEntities	41428000	usd
CY2021	exr	Income Loss And Dividend Income From Unconsolidated Real Estate Entities IncomeLossAndDividendIncomeFromUnconsolidatedRealEstateEntities	32358000	usd
CY2023Q4	us-gaap	Equity Method Investment Difference Between Carrying Amount And Underlying Equity EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity	60253000	usd
CY2023	exr	Equity Method Investment Excess Purchase Price Amortization Period EquityMethodInvestmentExcessPurchasePriceAmortizationPeriod	P39Y
CY2023	us-gaap	Property Management Fee Revenue PropertyManagementFeeRevenue	31755000	usd
CY2022	us-gaap	Property Management Fee Revenue PropertyManagementFeeRevenue	24389000	usd
CY2021	us-gaap	Property Management Fee Revenue PropertyManagementFeeRevenue	17619000	usd
CY2023Q4	us-gaap	Dividend And Interest Receivable DividendAndInterestReceivable	10042000	usd
CY2022Q4	us-gaap	Dividend And Interest Receivable DividendAndInterestReceivable	66170000	usd
CY2023Q4	exr	Debt Securities Held To Maturity And Financing Receivable After Allowance For Credit Loss And Interest Receivable DebtSecuritiesHeldToMaturityAndFinancingReceivableAfterAllowanceForCreditLossAndInterestReceivable	904769000	usd
CY2022Q4	exr	Debt Securities Held To Maturity And Financing Receivable After Allowance For Credit Loss And Interest Receivable DebtSecuritiesHeldToMaturityAndFinancingReceivableAfterAllowanceForCreditLossAndInterestReceivable	858049000	usd
CY2020Q4	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	300000000	usd
CY2022Q4	exr	Debt Securities Held To Maturity Term DebtSecuritiesHeldToMaturityTerm	P6Y
CY2022Q4	exr	Debt Securities Held To Maturity Extension Option DebtSecuritiesHeldToMaturityExtensionOption	2	extension_option
CY2022Q4	exr	Debt Securities Held To Maturity Extension Term DebtSecuritiesHeldToMaturityExtensionTerm	P1Y
CY2022Q4	exr	Debt Securities Held To Maturity Period After Which Preferred Dividends Increase Annually DebtSecuritiesHeldToMaturityPeriodAfterWhichPreferredDividendsIncreaseAnnually	P6Y
CY2020Q3	exr	Financing Receivable Stores Held As Collateral FinancingReceivableStoresHeldAsCollateral	62	store
CY2023Q4	exr	Notes Receivable Mortgage Receivable Percentage NotesReceivableMortgageReceivablePercentage	0.70
CY2023Q4	exr	Financing Receivable Extension Option FinancingReceivableExtensionOption	2	extension_option
CY2023	exr	Financing Receivable Extension Term FinancingReceivableExtensionTerm	P1Y
CY2023Q4	exr	Debt Instrument Fixed Rate Debt To Total Debt Rate DebtInstrumentFixedRateDebtToTotalDebtRate	0.734
CY2023Q4	us-gaap	Long Term Debt Percentage Bearing Fixed Interest Rate LongTermDebtPercentageBearingFixedInterestRate	0.039
CY2023Q4	us-gaap	Long Term Debt Percentage Bearing Variable Interest Rate LongTermDebtPercentageBearingVariableInterestRate	0.066
CY2023Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.046
CY2023Q4	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	19010000	usd
CY2023Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	1448566000	usd
CY2023Q4	exr	Derivative With Contingent Features Fair Value Of Asset Liability Net DerivativeWithContingentFeaturesFairValueOfAssetLiabilityNet	-5082000	usd
CY2023Q4	exr	Derivative Termination Value DerivativeTerminationValue	5082000	usd
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	211278803	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	211278803	shares
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2023	exr	Common Stock Voting Rights Votes Number CommonStockVotingRightsVotesNumber	1	item
CY2023	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	0	shares
CY2023Q3	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	76217359	shares
CY2023Q3	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	11353338000	usd
CY2023Q3	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	148.96
CY2022Q1	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	186766	shares
CY2022Q1	exr	Number Of Stores Acquired With Issuance Of Common Stock NumberOfStoresAcquiredWithIssuanceOfCommonStock	2	store
CY2022Q1	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	40965000	usd
CY2021Q3	exr	Number Of Sales Agents NumberOfSalesAgents	10	sales_agent
CY2021Q1	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	1600000	shares
CY2021Q1	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	129.13
CY2021Q1	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	206572000	usd
CY2023Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	500000000	usd
CY2023	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0	shares
CY2023Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	500000000	usd
CY2023Q4	us-gaap	Other Receivables OtherReceivables	100000000	usd
CY2022Q4	us-gaap	Other Receivables OtherReceivables	100000000	usd
CY2023Q4	us-gaap	Minority Interest In Preferred Unit Holders MinorityInterestInPreferredUnitHolders	222360000	usd
CY2022Q4	us-gaap	Minority Interest In Preferred Unit Holders MinorityInterestInPreferredUnitHolders	261502000	usd
CY2023	exr	Notes Receivable Stated Interest Rate NotesReceivableStatedInterestRate	0.050
CY2023	exr	Average Closing Market Price Measurement Period AverageClosingMarketPriceMeasurementPeriod	P10D
CY2023	exr	Average Closing Market Price Measurement Period AverageClosingMarketPriceMeasurementPeriod	P10D
CY2023Q4	exr	Common Stock Average Closing Market Price CommonStockAverageClosingMarketPrice	156.68
CY2023Q4	us-gaap	Units Of Partnership Interest Amount UnitsOfPartnershipInterestAmount	8885594	shares
CY2023Q4	exr	Operating Partnership Units Redemption Amount OperatingPartnershipUnitsRedemptionAmount	1392195000	usd
CY2023Q4	exr	Noncontrolling Interest Operating Partnership Units Redeemed For Common Stock NoncontrollingInterestOperatingPartnershipUnitsRedeemedForCommonStock	2803	shares
CY2022Q4	exr	Noncontrolling Interest Operating Partnership Units Redeemed For Common Stock NoncontrollingInterestOperatingPartnershipUnitsRedeemedForCommonStock	0	shares
CY2021Q4	exr	Noncontrolling Interest Operating Partnership Units Redeemed For Common Stock NoncontrollingInterestOperatingPartnershipUnitsRedeemedForCommonStock	165652	shares
CY2023Q4	exr	Noncontrolling Interest Operating Partnership Units Redeemed For Cash NoncontrollingInterestOperatingPartnershipUnitsRedeemedForCash	1000	shares
CY2022Q4	exr	Noncontrolling Interest Operating Partnership Units Redeemed For Cash NoncontrollingInterestOperatingPartnershipUnitsRedeemedForCash	24824	shares
CY2021Q4	exr	Noncontrolling Interest Operating Partnership Units Redeemed For Cash NoncontrollingInterestOperatingPartnershipUnitsRedeemedForCash	4500	shares
CY2023Q4	exr	Noncontrolling Interest Operating Partnership Units Redeemed Cash Paid NoncontrollingInterestOperatingPartnershipUnitsRedeemedCashPaid	108000	usd
CY2022Q4	exr	Noncontrolling Interest Operating Partnership Units Redeemed Cash Paid NoncontrollingInterestOperatingPartnershipUnitsRedeemedCashPaid	4617000	usd
CY2021Q4	exr	Noncontrolling Interest Operating Partnership Units Redeemed Cash Paid NoncontrollingInterestOperatingPartnershipUnitsRedeemedCashPaid	788000	usd
CY2023Q4	exr	Noncontrolling Interest Operating Partnership Units Issued With Acquisition NoncontrollingInterestOperatingPartnershipUnitsIssuedWithAcquisition	1674748	shares
CY2022Q4	exr	Noncontrolling Interest Operating Partnership Units Issued With Acquisition NoncontrollingInterestOperatingPartnershipUnitsIssuedWithAcquisition	711037	shares
CY2021Q4	exr	Noncontrolling Interest Operating Partnership Units Issued With Acquisition NoncontrollingInterestOperatingPartnershipUnitsIssuedWithAcquisition	897803	shares
CY2023Q4	exr	Noncontrolling Interest Operating Partnership Units Issued With Acquisition Value NoncontrollingInterestOperatingPartnershipUnitsIssuedWithAcquisitionValue	249470000	usd
CY2022Q4	exr	Noncontrolling Interest Operating Partnership Units Issued With Acquisition Value NoncontrollingInterestOperatingPartnershipUnitsIssuedWithAcquisitionValue	141000000	usd
CY2021Q4	exr	Noncontrolling Interest Operating Partnership Units Issued With Acquisition Value NoncontrollingInterestOperatingPartnershipUnitsIssuedWithAcquisitionValue	188319000	usd
CY2023Q4	exr	Number Of Stores Owned By Joint Ventures NumberOfStoresOwnedByJointVentures	12	store
CY2023Q4	exr	Number Of Stores Owned By Joint Ventures In Operation NumberOfStoresOwnedByJointVenturesInOperation	2	store
CY2023	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	3961000	usd
CY2022	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	3751000	usd
CY2023	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	4483000	usd
CY2022	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	4018000	usd
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	35783000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	32182000	usd
CY2023	us-gaap	Variable Lease Cost VariableLeaseCost	11632000	usd
CY2022	us-gaap	Variable Lease Cost VariableLeaseCost	11287000	usd
CY2023	us-gaap	Short Term Lease Cost ShortTermLeaseCost	24000	usd
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	32000	usd
CY2023	us-gaap	Lease Cost LeaseCost	55883000	usd
CY2022	us-gaap	Lease Cost LeaseCost	51270000	usd
CY2023	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	4483000	usd
CY2022	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	4018000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	29234000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	25384000	usd
CY2023	exr	Cash Paid For Operating Activities Lessee CashPaidForOperatingActivitiesLessee	33717000	usd
CY2022	exr	Cash Paid For Operating Activities Lessee CashPaidForOperatingActivitiesLessee	29402000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	265000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	16298000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	0	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	6823000	usd
CY2023Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P54Y
CY2022Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P54Y1M28D
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P18Y8M4D
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P20Y10D
CY2023Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0331
CY2022Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0331
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0391
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0365
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	34983000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	6542000	usd
CY2023Q4	exr	Lessee Operating And Finance Lease Liability Payments Year One LesseeOperatingAndFinanceLeaseLiabilityPaymentsYearOne	41525000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	34919000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	6572000	usd
CY2023Q4	exr	Lessee Operating And Finance Lease Liability Payments Due Year Two LesseeOperatingAndFinanceLeaseLiabilityPaymentsDueYearTwo	41491000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	35245000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	6715000	usd
CY2023Q4	exr	Lessee Operating And Finance Lease Liability Payments Due Year Three LesseeOperatingAndFinanceLeaseLiabilityPaymentsDueYearThree	41960000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	35635000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	6842000	usd
CY2023Q4	exr	Lessee Operating And Finance Lease Liability Payments Due Year Four LesseeOperatingAndFinanceLeaseLiabilityPaymentsDueYearFour	42477000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	36194000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	6953000	usd
CY2023Q4	exr	Lessee Operating And Finance Lease Liability Payments Due Year Five LesseeOperatingAndFinanceLeaseLiabilityPaymentsDueYearFive	43147000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	131194000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	353983000	usd
CY2023Q4	exr	Lessee Operating And Finance Lease Liability Payments Due After Year Five LesseeOperatingAndFinanceLeaseLiabilityPaymentsDueAfterYearFive	485177000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	308170000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	387607000	usd
CY2023Q4	exr	Lessee Operating And Finance Lease Liability Payments Due LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue	695777000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	71655000	usd
CY2023Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	244004000	usd
CY2023Q4	exr	Lessee Operating And Finance Lease Liability Undiscounted Excess Amount LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount	315659000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	236515000	usd
CY2023Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	143603000	usd
CY2023Q4	exr	Lessee Operating And Finance Lease Liability LesseeOperatingAndFinanceLeaseLiability	380118000	usd
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	477624	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	71594	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	74.54
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	62322	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	73.36
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	9272	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	82.47
CY2022	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	9272	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	82.47
CY2023	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	9272	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	82.47
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y11M23D
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	1338000	usd
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	9272	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	82.47
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P1Y11M23D
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	1338000	usd
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	9272	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	82.47
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P1Y11M23D
CY2022Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	1338000	usd
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	0	usd
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	0	usd
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	3925000	usd
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2023	exr	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Forfeiture Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageForfeitureRate	0.046
CY2023Q4	exr	Maximum Percentage Of Annual Salary Which Plan Participants May Contribute To The Plan MaximumPercentageOfAnnualSalaryWhichPlanParticipantsMayContributeToThePlan	0.60
CY2023	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	6576000	usd
CY2022	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	5169000	usd
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4239000	usd
CY2023	exr	Percentage Of Matching Contribution Made By Company For First Three Percent Of Participants Compensation PercentageOfMatchingContributionMadeByCompanyForFirstThreePercentOfParticipantsCompensation	1
CY2023	exr	Maximum Percentage Of Compensation By Plan Participants Subject To Hundred Percent Matching Of Company MaximumPercentageOfCompensationByPlanParticipantsSubjectToHundredPercentMatchingOfCompany	0.03
CY2023	exr	Maximum Percentage Of Matching Contribution Made By Company For Next Two Percent Of Participants Compensation MaximumPercentageOfMatchingContributionMadeByCompanyForNextTwoPercentOfParticipantsCompensation	0.50
CY2023	exr	Maximum Percentage Of Compensation By Plan Participants Subject To Fifty Percent Matching Of Company MaximumPercentageOfCompensationByPlanParticipantsSubjectToFiftyPercentMatchingOfCompany	0.02
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	26516000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	6035000	usd
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	32551000	usd
CY2023	exr	Income Tax Credits And Adjustments Federal IncomeTaxCreditsAndAdjustmentsFederal	-7742000	usd
CY2023	exr	Income Tax Credits And Adjustments State IncomeTaxCreditsAndAdjustmentsState	0	usd
CY2023	us-gaap	Income Tax Credits And Adjustments IncomeTaxCreditsAndAdjustments	-7742000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-4151000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	901000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3250000	usd
CY2023	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	14623000	usd
CY2023	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	6936000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21559000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	20592000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4546000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	25138000	usd
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CY2021Q4	us-gaap	Sec Schedule Iii Real Estate Investment Property Net SECScheduleIIIRealEstateInvestmentPropertyNet	8834649000	usd
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CY2023Q4	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false

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$EXR
Extra Space Storage Inc. Stock $exr

2024 Q1 Form 10-K Financial Statement

#000162828024008044 Filed on February 29, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

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$EXR Extra Space Storage Inc. Stock $exr

2024 Q1 Form 10-K Financial Statement

#000162828024008044 Filed on February 29, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EXR
Extra Space Storage Inc. Stock $exr