$EXR
Extra Space Storage Inc. Stock $exr

$exr Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-Q Financial Statement

#000162828019013342 Filed on November 05, 2019

Income Statement

Concept	2019 Q4	2019 Q3	2018 Q3
Revenue	$335.8M	$337.5M	$307.0M
YoY Change	9.26%	9.95%	8.02%
Cost Of Revenue	$95.50M	$88.65M	$73.65M
YoY Change	20.73%	20.37%	4.57%
Gross Profit	$240.3M	$248.9M	$233.3M
YoY Change	5.3%	6.67%	9.16%
Gross Profit Margin	71.56%	73.73%	76.01%
Selling, General & Admin	$20.90M	$22.50M	$19.70M
YoY Change	13.59%	14.21%	1.03%
% of Gross Profit	8.7%	9.04%	8.44%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$54.80M	$56.05M	$52.28M
YoY Change	3.01%	7.21%	8.75%
% of Gross Profit	22.8%	22.52%	22.41%
Operating Expenses	$75.70M	$78.60M	$72.00M
YoY Change	5.73%	9.17%	6.51%
Operating Profit	$164.6M	$162.6M	$153.6M
YoY Change	5.09%	5.89%	9.8%
Interest Expense	-$41.60M	$46.91M	$45.93M
YoY Change	-6.09%	2.14%	15.49%
% of Operating Profit	-25.27%	28.84%	29.9%
Other Income/Expense, Net
YoY Change
Pretax Income	$123.0M	$117.3M	$138.7M
YoY Change	9.43%	-15.4%	38.36%
Income Tax	$2.700M	$4.052M	$2.638M
% Of Pretax Income	2.2%	3.45%	1.9%
Net Earnings	$112.3M	$108.1M	$130.4M
YoY Change	10.66%	-17.12%	39.12%
Net Earnings / Revenue	33.44%	32.03%	42.49%
Basic Earnings Per Share	$0.87	$0.84	$1.03
Diluted Earnings Per Share	$0.86	$0.83	$1.02
COMMON SHARES
Basic Shares Outstanding	129.5M shares	128.8M shares	126.5M shares
Diluted Shares Outstanding		137.3M shares	134.2M shares

Balance Sheet

Concept	2019 Q4	2019 Q3	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$65.70M	$62.30M	$45.40M
YoY Change	14.26%	37.22%	-28.73%
Cash & Equivalents	$65.75M	$62.28M	$45.38M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$65.70M	$62.30M	$45.40M
YoY Change	14.26%	37.22%	-33.53%
LONG-TERM ASSETS
Property, Plant & Equipment	$7.962B	$7.935B	$7.426B
YoY Change	6.27%	6.86%	9.69%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$338.1M	$175.4M	$114.5M
YoY Change	169.83%	53.19%	45.86%
Other Assets	$5.000M	$4.400M	$21.20M
YoY Change	-67.11%	-79.25%	22.54%
Total Long-Term Assets	$8.467B	$8.256B	$7.753B
YoY Change	8.68%	6.49%	10.47%
TOTAL ASSETS
Total Short-Term Assets	$65.70M	$62.30M	$45.40M
Total Long-Term Assets	$8.467B	$8.256B	$7.753B
Total Assets	$8.532B	$8.318B	$7.799B
YoY Change	8.72%	6.66%	10.04%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$111.4M	$122.7M	$126.5M
YoY Change	9.75%	-3.0%	10.77%
Accrued Expenses	$274.8M	$279.0M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$386.2M	$401.7M	$126.5M
YoY Change	280.49%	217.55%	10.77%
LONG-TERM LIABILITIES
Long-Term Debt	$5.047B	$4.812B	$4.762B
YoY Change	4.88%	1.06%	10.4%
Other Long-Term Liabilities	$178.0M	$196.7M	$140.6M
YoY Change	18.98%	39.9%	63.49%
Total Long-Term Liabilities	$5.225B	$5.009B	$4.902B
YoY Change	5.31%	2.17%	11.44%
TOTAL LIABILITIES
Total Short-Term Liabilities	$386.2M	$401.7M	$126.5M
Total Long-Term Liabilities	$5.225B	$5.009B	$4.902B
Total Liabilities	$5.611B	$5.410B	$5.029B
YoY Change	10.83%	7.59%	11.42%
SHAREHOLDERS EQUITY
Retained Earnings	-$301.0M	-$296.8M	-$255.1M
YoY Change	14.51%	16.34%	-31.24%
Common Stock	$2.870B	$2.863B	$2.582B
YoY Change	8.63%	10.86%	0.54%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.540B	$2.523B	$2.396B
YoY Change
Total Liabilities & Shareholders Equity	$8.532B	$8.318B	$7.799B
YoY Change	8.72%	6.66%	10.04%

Cashflow Statement

Concept	2019 Q4	2019 Q3	2018 Q3
OPERATING ACTIVITIES
Net Income	$112.3M	$108.1M	$130.4M
YoY Change	10.66%	-17.12%	39.12%
Depreciation, Depletion And Amortization	$54.80M	$56.05M	$52.28M
YoY Change	3.01%	7.21%	8.75%
Cash From Operating Activities	$163.2M	$181.1M	$189.3M
YoY Change	9.68%	-4.33%	17.87%
INVESTING ACTIVITIES
Capital Expenditures	-$84.50M	-$54.80M	-$107.1M
YoY Change	-27.16%	-48.83%	90.23%
Acquisitions
YoY Change
Other Investing Activities	-$180.8M	$138.8M	$19.20M
YoY Change	1558.72%	622.92%	6.08%
Cash From Investing Activities	-$265.2M	$84.00M	-$87.90M
YoY Change	108.98%	-195.56%	130.1%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	106.1M	-254.1M	-103.9M
YoY Change	-771.52%	144.56%	15.7%
NET CHANGE
Cash From Operating Activities	163.2M	181.1M	189.3M
Cash From Investing Activities	-265.2M	84.00M	-87.90M
Cash From Financing Activities	106.1M	-254.1M	-103.9M
Net Change In Cash	4.100M	11.00M	-2.500M
YoY Change	-32.79%	-540.0%	-107.67%
FREE CASH FLOW
Cash From Operating Activities	$163.2M	$181.1M	$189.3M
Capital Expenditures	-$84.50M	-$54.80M	-$107.1M
Free Cash Flow	$247.7M	$235.9M	$296.4M
YoY Change	-6.46%	-20.41%	36.65%

Facts In Submission

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	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
	dei	Entity Central Index Key EntityCentralIndexKey	0001289490
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	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2019-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-32269
	dei	Entity Registrant Name EntityRegistrantName	EXTRA SPACE STORAGE INC.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	20-1076777
	dei	Entity Address Address Line1 EntityAddressAddressLine1	2795 East Cottonwood Parkway, Suite 300
	dei	Entity Address City Or Town EntityAddressCityOrTown	Salt Lake City
	dei	Entity Address State Or Province EntityAddressStateOrProvince	UT
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	84121
	dei	City Area Code CityAreaCode	801
	dei	Local Phone Number LocalPhoneNumber	365-4600
	dei	Security12b Title Security12bTitle	Common Stock, $0.01 par value
	dei	Trading Symbol TradingSymbol	EXR
	dei	Security Exchange Name SecurityExchangeName	NYSE
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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	us-gaap	Noncontrolling Interest In Net Income Loss Preferred Unit Holders Redeemable NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable	10605000	USD
CY2019Q3	exr	Minority Interest In Net Income Loss Operating Partnerships And Other MinorityInterestInNetIncomeLossOperatingPartnershipsAndOther	4820000	USD
CY2018Q3	exr	Minority Interest In Net Income Loss Operating Partnerships And Other MinorityInterestInNetIncomeLossOperatingPartnershipsAndOther	5546000	USD
	exr	Minority Interest In Net Income Loss Operating Partnerships And Other MinorityInterestInNetIncomeLossOperatingPartnershipsAndOther	13780000	USD
	exr	Minority Interest In Net Income Loss Operating Partnerships And Other MinorityInterestInNetIncomeLossOperatingPartnershipsAndOther	13398000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	108087000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	130418000	USD
	us-gaap	Net Income Loss NetIncomeLoss	307685000	USD
	us-gaap	Net Income Loss NetIncomeLoss	313827000	USD
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.84
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.03
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.40
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.49
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.83
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.02
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.37
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.48
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	128776549	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	126466837	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	127830272	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	125959926	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	137318475	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	134240290	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	136164299	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	133015690	shares
CY2019Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.90
CY2018Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.86
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	2.66
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	2.50
CY2019Q3	us-gaap	Profit Loss ProfitLoss	115995000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	139687000	USD
	us-gaap	Profit Loss ProfitLoss	330844000	USD
	us-gaap	Profit Loss ProfitLoss	337830000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-16762000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	5716000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-82057000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	36812000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	99233000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	145403000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	248787000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	374642000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	7109000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	9553000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	19191000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	25743000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	92124000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	135850000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	229596000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	348899000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2723807000	USD
CY2018Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	799000	USD
CY2018Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2726000	USD
CY2018Q1	exr	Noncontrolling Interest Repayment Of Receivable For Preferred Operating Units Pledged As Collateral On Loan NoncontrollingInterestRepaymentOfReceivableForPreferredOperatingUnitsPledgedAsCollateralOnLoan	495000	USD
CY2018Q1	exr	Noncontrolling Interest Increase From Transactions With Other Noncontrolling Interests Net NoncontrollingInterestIncreaseFromTransactionsWithOtherNoncontrollingInterestsNet	122000	USD
CY2018Q1	exr	Debt Instrument Repurchase Of Equity Component DebtInstrumentRepurchaseOfEquityComponent	21000000	USD
CY2018Q1	us-gaap	Profit Loss ProfitLoss	95430000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	23063000	USD
CY2018Q1	us-gaap	Partners Capital Account Distributions PartnersCapitalAccountDistributions	7909000	USD
CY2018Q1	us-gaap	Dividends Common Stock DividendsCommonStock	98327000	USD
CY2018Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2716648000	USD
CY2018Q2	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	371000	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3116000	USD
CY2018Q2	us-gaap	Partners Capital Account Acquisitions PartnersCapitalAccountAcquisitions	1877000	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	102713000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8033000	USD
CY2018Q2	us-gaap	Partners Capital Account Distributions PartnersCapitalAccountDistributions	8468000	USD
CY2018Q2	us-gaap	Dividends Common Stock DividendsCommonStock	108486000	USD
CY2018Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2715804000	USD
CY2018Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	33780000	USD
CY2018Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2613000	USD
CY2018Q3	exr	Debt Instrument Repurchase Of Equity Component DebtInstrumentRepurchaseOfEquityComponent	-10251000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	139687000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	5716000	USD
CY2018Q3	us-gaap	Partners Capital Account Distributions PartnersCapitalAccountDistributions	8460000	USD
CY2018Q3	us-gaap	Dividends Common Stock DividendsCommonStock	108795000	USD
CY2018Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2770094000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2785422000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1757000	USD
CY2019Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2954000	USD
CY2019Q1	us-gaap	Partners Capital Account Acquisitions PartnersCapitalAccountAcquisitions	23447000	USD
CY2019Q1	us-gaap	Profit Loss ProfitLoss	102160000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-23993000	USD
CY2019Q1	us-gaap	Partners Capital Account Distributions PartnersCapitalAccountDistributions	8412000	USD
CY2019Q1	us-gaap	Dividends Common Stock DividendsCommonStock	109523000	USD
CY2019Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2773812000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	468000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	2000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	98796000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3998000	USD
CY2019Q2	us-gaap	Partners Capital Account Acquisitions PartnersCapitalAccountAcquisitions	4575000	USD
CY2019Q2	exr	Noncontrolling Interest Increase From Transactions With Other Noncontrolling Interests Net NoncontrollingInterestIncreaseFromTransactionsWithOtherNoncontrollingInterestsNet	50000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	112689000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-41302000	USD
CY2019Q2	us-gaap	Partners Capital Account Distributions PartnersCapitalAccountDistributions	8705000	USD
CY2019Q2	us-gaap	Dividends Common Stock DividendsCommonStock	115572000	USD
CY2019Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2828811000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	605000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2019Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	100056000	USD
CY2019Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3035000	USD
CY2019Q3	exr	Noncontrolling Interest Repayment Of Receivable For Preferred Operating Units Pledged As Collateral On Loan NoncontrollingInterestRepaymentOfReceivableForPreferredOperatingUnitsPledgedAsCollateralOnLoan	1211000	USD
CY2019Q3	exr	Noncontrolling Interest Increase From Transactions With Other Noncontrolling Interests Net NoncontrollingInterestIncreaseFromTransactionsWithOtherNoncontrollingInterestsNet	96000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	115995000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-16762000	USD
CY2019Q3	us-gaap	Partners Capital Account Distributions PartnersCapitalAccountDistributions	8618000	USD
CY2019Q3	us-gaap	Dividends Common Stock DividendsCommonStock	116440000	USD
CY2019Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2907989000	USD
	us-gaap	Profit Loss ProfitLoss	330844000	USD
	us-gaap	Profit Loss ProfitLoss	337830000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	165116000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	155924000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	8912000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	9230000	USD
	exr	Amortization Of Debt Discount Premium Equity Component Of Senior Notes AmortizationOfDebtDiscountPremiumEquityComponentOfSeniorNotes	3533000	USD
	exr	Amortization Of Debt Discount Premium Equity Component Of Senior Notes AmortizationOfDebtDiscountPremiumEquityComponentOfSeniorNotes	3525000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	9987000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	8455000	USD
	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	1205000	USD
	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	30807000	USD
	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-4752000	USD
	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-5235000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	11153000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	639000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	29310000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	27677000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	4370000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	12597000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	544466000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	529027000	USD
	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	287114000	USD
	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	327011000	USD
	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	34413000	USD
	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	45376000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	11254000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	51889000	USD
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	33661000	USD
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	52806000	USD
	exr	Return Of Investment Real Estate Ventures ReturnOfInvestmentRealEstateVentures	3982000	USD
	exr	Return Of Investment Real Estate Ventures ReturnOfInvestmentRealEstateVentures	47964000	USD
	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	162677000	USD
	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	13889000	USD
	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	151211000	USD
	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	25226000	USD
	us-gaap	Payments To Acquire Furniture And Fixtures PaymentsToAcquireFurnitureAndFixtures	4959000	USD
	us-gaap	Payments To Acquire Furniture And Fixtures PaymentsToAcquireFurnitureAndFixtures	3026000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-356377000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-317029000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	198852000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	33780000	USD
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	1508000000	USD
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	973386000	USD
	us-gaap	Repayments Of Debt RepaymentsOfDebt	1503686000	USD
	us-gaap	Repayments Of Debt RepaymentsOfDebt	787939000	USD
	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	30928000	USD
	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	21650000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	2008000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	7055000	USD
	exr	Repayments Of Debt Instruments RepaymentsOfDebtInstruments	0	USD
	exr	Repayments Of Debt Instruments RepaymentsOfDebtInstruments	80270000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	2830000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1170000	USD
	exr	Cash Portion Of Redemption Of Preferred Operating Partnership Units CashPortionOfRedemptionOfPreferredOperatingPartnershipUnits	0	USD
	exr	Cash Portion Of Redemption Of Preferred Operating Partnership Units CashPortionOfRedemptionOfPreferredOperatingPartnershipUnits	2558000	USD
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	146000	USD
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	122000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	341535000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	315608000	USD
	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	25735000	USD
	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	24837000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-194064000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-231459000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-5975000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-19461000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	72690000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	86044000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	66715000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	66583000	USD
	us-gaap	Interest Paid Net InterestPaidNet	136563000	USD
	us-gaap	Interest Paid Net InterestPaidNet	117627000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	6197000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	803000	USD
	exr	Redemption Of Operating Partnership Units For Common Stock Including Additional Paid In Capital RedemptionOfOperatingPartnershipUnitsForCommonStockIncludingAdditionalPaidInCapital	9258000	USD
	exr	Redemption Of Operating Partnership Units For Common Stock Including Additional Paid In Capital RedemptionOfOperatingPartnershipUnitsForCommonStockIncludingAdditionalPaidInCapital	955000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	277430000	USD
	exr	Establishment Of Operating Lease Liability EstablishmentOfOperatingLeaseLiability	286787000	USD
	exr	Establishment Of Operating Lease Right Of Use Assets And Lease Liabilities Increase Decrease In Accounts Payable And Accrued Expenses EstablishmentOfOperatingLeaseRightOfUseAssetsAndLeaseLiabilitiesIncreaseDecreaseInAccountsPayableAndAccruedExpenses	9357000	USD
	exr	Real Estate Additions Portion Not Yet Paid RealEstateAdditionsPortionNotYetPaid	1292000	USD
	exr	Real Estate Additions Portion Not Yet Paid RealEstateAdditionsPortionNotYetPaid	275000	USD
	exr	Construction In Progress And Capital Expenditures Incurred But Not Paid ConstructionInProgressAndCapitalExpendituresIncurredButNotPaid	1292000	USD
	exr	Construction In Progress And Capital Expenditures Incurred But Not Paid ConstructionInProgressAndCapitalExpendituresIncurredButNotPaid	275000	USD
	exr	Conversion Of Preferred Operating Units To Common Units ConversionOfPreferredOperatingUnitsToCommonUnits	4374000	USD
	exr	Conversion Of Preferred Operating Units To Common Units ConversionOfPreferredOperatingUnitsToCommonUnits	0	USD
	exr	Issuance Of Common Units For Conversion Of Preferred Units IssuanceOfCommonUnitsForConversionOfPreferredUnits	4374000	USD
	exr	Issuance Of Common Units For Conversion Of Preferred Units IssuanceOfCommonUnitsForConversionOfPreferredUnits	0	USD
	us-gaap	Nature Of Operations NatureOfOperations	<div style="line-height:120%;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">ORGANIZATION</span></div><div style="line-height:120%;padding-top:8px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">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 ("stores") 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="line-height:120%;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The Company invests in stores by acquiring wholly-owned stores or by acquiring an equity interest in real estate entities. At </span><span style="font-family:inherit;font-size:10pt;">September 30, 2019</span><span style="font-family:inherit;font-size:10pt;">, the Company had direct and indirect equity interests in </span><span style="font-family:inherit;font-size:10pt;"><span>1,167</span></span><span style="font-family:inherit;font-size:10pt;"> stores. In addition, the Company managed </span><span style="font-family:inherit;font-size:10pt;"><span>630</span></span><span style="font-family:inherit;font-size:10pt;"> stores for third parties, bringing the total number of stores which it owns and/or manages to </span><span style="font-family:inherit;font-size:10pt;"><span>1,797</span></span><span style="font-family:inherit;font-size:10pt;">. These stores are located in </span><span style="font-family:inherit;font-size:10pt;"><span>40</span></span><span style="font-family:inherit;font-size:10pt;"> states, Washington, D.C. and Puerto Rico. The Company also offers tenant reinsurance at its owned and managed stores that insures the value of goods in the storage units.</span></div>
CY2019Q3	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	1167	store
CY2019Q3	exr	Number Of Real Estate Properties Franchisees And Others NumberOfRealEstatePropertiesFranchiseesAndOthers	630	store
CY2019Q3	exr	Number Of Real Estate Properties Owned And Or Managed NumberOfRealEstatePropertiesOwnedAndOrManaged	1797	store
CY2019Q3	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	40	state
CY2019Q3	exr	Number Of Parcels Of Land Held For Sale NumberOfParcelsOfLandHeldForSale	1	land_parcel
CY2019Q3	exr	Average Share Price Per Share AverageSharePricePerShare	115.63
CY2018Q3	exr	Average Share Price Per Share AverageSharePricePerShare	92.83
	exr	Average Share Price Per Share AverageSharePricePerShare	105.74
	exr	Average Share Price Per Share AverageSharePricePerShare	90.09
	us-gaap	Net Income Loss NetIncomeLoss	307685000	USD
CY2019Q3	exr	Number Of Preferred Operating Partnership Units NumberOfPreferredOperatingPartnershipUnits	1400920	shares
CY2018Q3	exr	Number Of Preferred Operating Partnership Units NumberOfPreferredOperatingPartnershipUnits	770669	shares
	exr	Number Of Preferred Operating Partnership Units NumberOfPreferredOperatingPartnershipUnits	1470693	shares
	exr	Number Of Preferred Operating Partnership Units NumberOfPreferredOperatingPartnershipUnits	1816010	shares
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	108087000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	130418000	USD
	us-gaap	Net Income Loss NetIncomeLoss	313827000	USD
CY2019Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	165000	USD
CY2018Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	219000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	508000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	550000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	107922000	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	130199000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	307177000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	313277000	USD
CY2019Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	-165000	USD
CY2018Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	-550000	USD
CY2019Q3	exr	Net Income Loss Attributable To Noncontrolling Interest In Operating Partnership NetIncomeLossAttributableToNoncontrollingInterestInOperatingPartnership	6100000	USD
CY2018Q3	exr	Net Income Loss Attributable To Noncontrolling Interest In Operating Partnership NetIncomeLossAttributableToNoncontrollingInterestInOperatingPartnership	7336000	USD
	exr	Net Income Loss Attributable To Noncontrolling Interest In Operating Partnership NetIncomeLossAttributableToNoncontrollingInterestInOperatingPartnership	17539000	USD
	exr	Net Income Loss Attributable To Noncontrolling Interest In Operating Partnership NetIncomeLossAttributableToNoncontrollingInterestInOperatingPartnership	17191000	USD
CY2019Q3	exr	Income Loss Attributable To Noncontrolling Interest Fixed Component IncomeLossAttributableToNoncontrollingInterestFixedComponent	572000	USD
CY2018Q3	exr	Income Loss Attributable To Noncontrolling Interest Fixed Component IncomeLossAttributableToNoncontrollingInterestFixedComponent	572000	USD
	exr	Income Loss Attributable To Noncontrolling Interest Fixed Component IncomeLossAttributableToNoncontrollingInterestFixedComponent	1716000	USD
	exr	Income Loss Attributable To Noncontrolling Interest Fixed Component IncomeLossAttributableToNoncontrollingInterestFixedComponent	1716000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	113615000	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	136963000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	323000000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	329302000	USD
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	128776549	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	126466837	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	127830272	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	125959926	shares
CY2019Q3	exr	Incremental Common Shares Attributable To Conversion Of Operating Partnership Units IncrementalCommonSharesAttributableToConversionOfOperatingPartnershipUnits	6050028	shares
CY2018Q3	exr	Incremental Common Shares Attributable To Conversion Of Operating Partnership Units IncrementalCommonSharesAttributableToConversionOfOperatingPartnershipUnits	5636845	shares
	exr	Incremental Common Shares Attributable To Conversion Of Operating Partnership Units IncrementalCommonSharesAttributableToConversionOfOperatingPartnershipUnits	6032656	shares
	exr	Incremental Common Shares Attributable To Conversion Of Operating Partnership Units IncrementalCommonSharesAttributableToConversionOfOperatingPartnershipUnits	5650599	shares
CY2019Q3	exr	Incremental Common Shares Attributable To Share Based Payment Arrangements Restricted Stock Awards IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsRestrictedStockAwards	209963	shares
CY2018Q3	exr	Incremental Common Shares Attributable To Share Based Payment Arrangements Restricted Stock Awards IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsRestrictedStockAwards	0	shares
	exr	Incremental Common Shares Attributable To Share Based Payment Arrangements Restricted Stock Awards IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsRestrictedStockAwards	0	shares
	exr	Incremental Common Shares Attributable To Share Based Payment Arrangements Restricted Stock Awards IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsRestrictedStockAwards	250630	shares
CY2019Q3	exr	Incremental Common Shares Attributable To Share Based Payment Arrangements Stock Options IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsStockOptions	1406455	shares
CY2018Q3	exr	Incremental Common Shares Attributable To Share Based Payment Arrangements Stock Options IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsStockOptions	269390	shares
	exr	Incremental Common Shares Attributable To Share Based Payment Arrangements Stock Options IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsStockOptions	1425891	shares
	exr	Incremental Common Shares Attributable To Share Based Payment Arrangements Stock Options IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsStockOptions	279055	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	137318475	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	134240290	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	136164299	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	133015690	shares
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.84
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.03
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.40
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.49
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.83
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.02
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.37
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.48
CY2019Q3	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	1	store
CY2019Q3	exr	Real Estate Property Asset Acquisition Consideration Transferred RealEstatePropertyAssetAcquisitionConsiderationTransferred	16937000	USD
CY2019Q3	exr	Payments To Acquire Assets Gross PaymentsToAcquireAssetsGross	16941000	USD
CY2019Q3	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2019Q3	exr	Investments In Real Estate Joint Ventures Net Of Distributions Received InvestmentsInRealEstateJointVenturesNetOfDistributionsReceived	0	USD
CY2019Q3	exr	Real Estate Property Acquisition Increase Assets Acquired And Liabilities Assumed Net RealEstatePropertyAcquisitionIncreaseAssetsAcquiredAndLiabilitiesAssumedNet	4000	USD
CY2019Q3	exr	Real Estate Property Asset Acquisition Consideration Transferred Equity Interest Issued Or Issuable RealEstatePropertyAssetAcquisitionConsiderationTransferredEquityInterestIssuedOrIssuable	0	USD
CY2019Q3	us-gaap	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Shares Issued1 NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1	0	shares
CY2019Q3	exr	Noncash Or Part Noncash Acquisition Net Real Estate Assets Acquired NoncashOrPartNoncashAcquisitionNetRealEstateAssetsAcquired	16937000	USD
CY2019Q2	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	1	store
CY2019Q1	exr	Real Estate Property Asset Acquisition Consideration Transferred RealEstatePropertyAssetAcquisitionConsiderationTransferred	223740000	USD
CY2019Q1	exr	Payments To Acquire Assets Gross PaymentsToAcquireAssetsGross	202890000	USD
CY2019Q1	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	17157000	USD
CY2019Q1	exr	Investments In Real Estate Joint Ventures Net Of Distributions Received InvestmentsInRealEstateJointVenturesNetOfDistributionsReceived	2780000	USD
CY2019Q1	exr	Real Estate Property Acquisition Increase Assets Acquired And Liabilities Assumed Net RealEstatePropertyAcquisitionIncreaseAssetsAcquiredAndLiabilitiesAssumedNet	-913000	USD
CY2019Q2	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2019Q2	exr	Real Estate Property Asset Acquisition Consideration Transferred Equity Interest Issued Or Issuable RealEstatePropertyAssetAcquisitionConsiderationTransferredEquityInterestIssuedOrIssuable	0	USD
CY2019Q2	us-gaap	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Shares Issued1 NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1	0	shares
CY2019Q2	exr	Noncash Or Part Noncash Acquisition Net Real Estate Assets Acquired NoncashOrPartNoncashAcquisitionNetRealEstateAssetsAcquired	8424000	USD
CY2019Q1	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	14	store
CY2019Q2	exr	Real Estate Property Asset Acquisition Consideration Transferred RealEstatePropertyAssetAcquisitionConsiderationTransferred	8424000	USD
CY2019Q2	exr	Payments To Acquire Assets Gross PaymentsToAcquireAssetsGross	8424000	USD
CY2019Q2	exr	Investments In Real Estate Joint Ventures Net Of Distributions Received InvestmentsInRealEstateJointVenturesNetOfDistributionsReceived	0	USD
CY2019Q2	exr	Real Estate Property Acquisition Increase Assets Acquired And Liabilities Assumed Net RealEstatePropertyAcquisitionIncreaseAssetsAcquiredAndLiabilitiesAssumedNet	0	USD
CY2019Q1	exr	Real Estate Property Asset Acquisition Consideration Transferred Equity Interest Issued Or Issuable RealEstatePropertyAssetAcquisitionConsiderationTransferredEquityInterestIssuedOrIssuable	0	USD
CY2019Q1	us-gaap	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Shares Issued1 NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1	0	shares
CY2019Q1	exr	Noncash Or Part Noncash Acquisition Net Real Estate Assets Acquired NoncashOrPartNoncashAcquisitionNetRealEstateAssetsAcquired	223740000	USD
	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	16	store
	exr	Real Estate Property Asset Acquisition Consideration Transferred RealEstatePropertyAssetAcquisitionConsiderationTransferred	249101000	USD
	exr	Payments To Acquire Assets Gross PaymentsToAcquireAssetsGross	228255000	USD
	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	17157000	USD
	exr	Investments In Real Estate Joint Ventures Net Of Distributions Received InvestmentsInRealEstateJointVenturesNetOfDistributionsReceived	2780000	USD
	exr	Real Estate Property Acquisition Increase Assets Acquired And Liabilities Assumed Net RealEstatePropertyAcquisitionIncreaseAssetsAcquiredAndLiabilitiesAssumedNet	-909000	USD
	exr	Real Estate Property Asset Acquisition Consideration Transferred Equity Interest Issued Or Issuable RealEstatePropertyAssetAcquisitionConsiderationTransferredEquityInterestIssuedOrIssuable	0	USD
	us-gaap	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Shares Issued1 NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1	0	shares
	exr	Noncash Or Part Noncash Acquisition Net Real Estate Assets Acquired NoncashOrPartNoncashAcquisitionNetRealEstateAssetsAcquired	249101000	USD
CY2018Q3	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	6	store
CY2018Q3	exr	Real Estate Property Asset Acquisition Consideration Transferred RealEstatePropertyAssetAcquisitionConsiderationTransferred	74694000	USD
CY2018Q3	exr	Payments To Acquire Assets Gross PaymentsToAcquireAssetsGross	71989000	USD
CY2018Q3	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2018Q3	exr	Investments In Real Estate Joint Ventures Net Of Distributions Received InvestmentsInRealEstateJointVenturesNetOfDistributionsReceived	0	USD
CY2018Q3	exr	Real Estate Property Acquisition Increase Assets Acquired And Liabilities Assumed Net RealEstatePropertyAcquisitionIncreaseAssetsAcquiredAndLiabilitiesAssumedNet	-2705000	USD
CY2018Q3	exr	Real Estate Property Asset Acquisition Consideration Transferred Equity Interest Issued Or Issuable RealEstatePropertyAssetAcquisitionConsiderationTransferredEquityInterestIssuedOrIssuable	0	USD
CY2018Q3	us-gaap	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Shares Issued1 NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1	0	shares
CY2018Q3	exr	Noncash Or Part Noncash Acquisition Net Real Estate Assets Acquired NoncashOrPartNoncashAcquisitionNetRealEstateAssetsAcquired	74694000	USD
CY2018Q2	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	17	store
CY2018Q2	exr	Real Estate Property Asset Acquisition Consideration Transferred RealEstatePropertyAssetAcquisitionConsiderationTransferred	237284000	USD
CY2018Q2	exr	Payments To Acquire Assets Gross PaymentsToAcquireAssetsGross	148650000	USD
CY2018Q2	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	87500000	USD
CY2018Q2	exr	Investments In Real Estate Joint Ventures Net Of Distributions Received InvestmentsInRealEstateJointVenturesNetOfDistributionsReceived	-1024000	USD
CY2018Q2	exr	Real Estate Property Acquisition Increase Assets Acquired And Liabilities Assumed Net RealEstatePropertyAcquisitionIncreaseAssetsAcquiredAndLiabilitiesAssumedNet	-281000	USD
CY2018Q2	us-gaap	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Shares Issued1 NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1	21768	shares
CY2018Q2	exr	Real Estate Property Asset Acquisition Consideration Transferred Equity Interest Issued Or Issuable RealEstatePropertyAssetAcquisitionConsiderationTransferredEquityInterestIssuedOrIssuable	1877000	USD
CY2018Q2	exr	Noncash Or Part Noncash Acquisition Net Real Estate Assets Acquired NoncashOrPartNoncashAcquisitionNetRealEstateAssetsAcquired	237284000	USD
CY2018Q1	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	5	store
CY2018Q1	exr	Real Estate Property Asset Acquisition Consideration Transferred RealEstatePropertyAssetAcquisitionConsiderationTransferred	70787000	USD
CY2018Q1	exr	Payments To Acquire Assets Gross PaymentsToAcquireAssetsGross	70171000	USD
CY2018Q1	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2018Q1	exr	Investments In Real Estate Joint Ventures Net Of Distributions Received InvestmentsInRealEstateJointVenturesNetOfDistributionsReceived	489000	USD
CY2018Q1	exr	Real Estate Property Acquisition Increase Assets Acquired And Liabilities Assumed Net RealEstatePropertyAcquisitionIncreaseAssetsAcquiredAndLiabilitiesAssumedNet	-127000	USD
CY2018Q1	exr	Real Estate Property Asset Acquisition Consideration Transferred Equity Interest Issued Or Issuable RealEstatePropertyAssetAcquisitionConsiderationTransferredEquityInterestIssuedOrIssuable	0	USD
CY2018Q1	us-gaap	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Shares Issued1 NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1	0	shares
CY2018Q1	exr	Noncash Or Part Noncash Acquisition Net Real Estate Assets Acquired NoncashOrPartNoncashAcquisitionNetRealEstateAssetsAcquired	70787000	USD
	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	28	store
	exr	Real Estate Property Asset Acquisition Consideration Transferred RealEstatePropertyAssetAcquisitionConsiderationTransferred	382765000	USD
	exr	Payments To Acquire Assets Gross PaymentsToAcquireAssetsGross	290810000	USD
	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	87500000	USD
	exr	Investments In Real Estate Joint Ventures Net Of Distributions Received InvestmentsInRealEstateJointVenturesNetOfDistributionsReceived	-535000	USD
	exr	Real Estate Property Acquisition Increase Assets Acquired And Liabilities Assumed Net RealEstatePropertyAcquisitionIncreaseAssetsAcquiredAndLiabilitiesAssumedNet	-3113000	USD
	exr	Real Estate Property Asset Acquisition Consideration Transferred Equity Interest Issued Or Issuable RealEstatePropertyAssetAcquisitionConsiderationTransferredEquityInterestIssuedOrIssuable	1877000	USD
	us-gaap	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Shares Issued1 NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1	21768	shares
	exr	Noncash Or Part Noncash Acquisition Net Real Estate Assets Acquired NoncashOrPartNoncashAcquisitionNetRealEstateAssetsAcquired	382765000	USD
CY2019Q1	exr	Number Of Real Estate Properties Acquired Previous Noncontrolling Interest Held NumberOfRealEstatePropertiesAcquiredPreviousNoncontrollingInterestHeld	12	store
	exr	Number Of Real Estate Properties Acquired Previous Noncontrolling Interest Held NumberOfRealEstatePropertiesAcquiredPreviousNoncontrollingInterestHeld	15	store
	exr	Contributions To Equity Method Investments Including Noncash Amounts ContributionsToEquityMethodInvestmentsIncludingNoncashAmounts	56799000	USD
	exr	Number Of Real Estate Properties Acquired By Joint Ventures NumberOfRealEstatePropertiesAcquiredByJointVentures	19	store
	exr	Number Of Stores Acquired At Issuance Of Certificate Of Occupancy NumberOfStoresAcquiredAtIssuanceOfCertificateOfOccupancy	6	store
CY2019Q3	exr	Equity Method Investment Number Of Properties EquityMethodInvestmentNumberOfProperties	242	property
CY2019Q3	exr	Real Estate Investments Unconsolidated Real Estateand Other Joint Ventures Net Of Distributions RealEstateInvestmentsUnconsolidatedRealEstateandOtherJointVenturesNetOfDistributions	130299000	USD
CY2018Q4	exr	Real Estate Investments Unconsolidated Real Estateand Other Joint Ventures Net Of Distributions RealEstateInvestmentsUnconsolidatedRealEstateandOtherJointVenturesNetOfDistributions	80129000	USD
CY2019Q3	exr	Variable Interest Entity Interest In Trust Number VariableInterestEntityInterestInTrustNumber	3	subsidiary
	exr	Variable Interest Entity Interest In Consolidated Joint Ventures Number VariableInterestEntityInterestInConsolidatedJointVenturesNumber	0	joint_venture
	us-gaap	Interest Expense Debt Excluding Amortization InterestExpenseDebtExcludingAmortization	13476000	USD
	us-gaap	Interest Expense Debt Excluding Amortization InterestExpenseDebtExcludingAmortization	13614000	USD
CY2019Q3	us-gaap	Derivative Number Of Instruments Held DerivativeNumberOfInstrumentsHeld	25	derivative
CY2019Q3	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	2402883000	USD
CY2019Q3	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	3296000	USD
CY2019Q3	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	-44985000	USD
CY2019Q3	exr	Derivative Instruments With Contingent Features Contingent Cash Settlement Value DerivativeInstrumentsWithContingentFeaturesContingentCashSettlementValue	45120000	USD
CY2019Q3	us-gaap	Interest Expense Debt Excluding Amortization InterestExpenseDebtExcludingAmortization	4492000	USD
CY2018Q3	us-gaap	Interest Expense Debt Excluding Amortization InterestExpenseDebtExcludingAmortization	4492000	USD
CY2019Q3	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	1186000	USD
CY2018Q3	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	1140000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	3533000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	3525000	USD
CY2019Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	5678000	USD
CY2018Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	5632000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	17009000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	17139000	USD
CY2019Q2	exr	Number Of Sales Agents NumberOfSalesAgents	9	sales_agent
CY2019Q3	us-gaap	Due From Related Parties Noncurrent DueFromRelatedPartiesNoncurrent	100000000	USD
CY2018Q4	us-gaap	Due From Related Parties Noncurrent DueFromRelatedPartiesNoncurrent	108644000	USD
CY2019Q3	exr	Common Stock Average Closing Market Price CommonStockAverageClosingMarketPrice	116.80
CY2019Q3	us-gaap	Units Of Partnership Interest Amount UnitsOfPartnershipInterestAmount	6025341	shares
CY2019Q3	exr	Operating Partnership Units Redemption Amount OperatingPartnershipUnitsRedemptionAmount	703760000	USD
CY2019Q3	exr	Noncontrolling Interest Operating Partnership Units Redeemed For Common Stock NoncontrollingInterestOperatingPartnershipUnitsRedeemedForCommonStock	239619	shares
CY2018Q3	exr	Noncontrolling Interest Operating Partnership Units Redeemed For Common Stock NoncontrollingInterestOperatingPartnershipUnitsRedeemedForCommonStock	25000	shares
CY2019Q3	exr	Noncontrolling Interest Operating Partnership Units Redeemed For Cash NoncontrollingInterestOperatingPartnershipUnitsRedeemedForCash	0	shares
CY2018Q3	exr	Noncontrolling Interest Operating Partnership Units Redeemed For Cash NoncontrollingInterestOperatingPartnershipUnitsRedeemedForCash	30000	shares
CY2019Q3	exr	Noncontrolling Interest Operating Partnership Units Redeemed Cash Paid NoncontrollingInterestOperatingPartnershipUnitsRedeemedCashPaid	0	USD
CY2018Q3	exr	Noncontrolling Interest Operating Partnership Units Redeemed Cash Paid NoncontrollingInterestOperatingPartnershipUnitsRedeemedCashPaid	2558000	USD
CY2019Q3	exr	Noncontrolling Interest Operating Partnership Units Issued With Acquisition NoncontrollingInterestOperatingPartnershipUnitsIssuedWithAcquisition	0	shares
CY2018Q3	exr	Noncontrolling Interest Operating Partnership Units Issued With Acquisition NoncontrollingInterestOperatingPartnershipUnitsIssuedWithAcquisition	21768	shares
CY2019Q3	exr	Noncontrolling Interest Operating Partnership Units Issued With Acquisition Value NoncontrollingInterestOperatingPartnershipUnitsIssuedWithAcquisitionValue	0	USD
CY2018Q3	exr	Noncontrolling Interest Operating Partnership Units Issued With Acquisition Value NoncontrollingInterestOperatingPartnershipUnitsIssuedWithAcquisitionValue	1877000	USD
	exr	Increase In Noncontrolling Interest Units Conversion Of Preferred Units IncreaseInNoncontrollingInterestUnitsConversionOfPreferredUnits	270709	shares
	exr	Increase In Noncontrolling Interest Units Conversion Of Preferred Units IncreaseInNoncontrollingInterestUnitsConversionOfPreferredUnits	0	shares
CY2019Q2	exr	Number Of Stores Added Under Operating Lease NumberOfStoresAddedUnderOperatingLease	22	store
CY2019Q3	exr	Number Of Stores Added Under Operating Lease NumberOfStoresAddedUnderOperatingLease	5	store
CY2019Q3	us-gaap	Lessor Operating Lease Term Of Contract LessorOperatingLeaseTermOfContract	P25Y
	exr	Lease Contract Term After Which Can Be Terminated LeaseContractTermAfterWhichCanBeTerminated	P10Y
	exr	Lease Contract Term After Which Can Be Terminated LeaseContractTermAfterWhichCanBeTerminated	P10Y
CY2019Q2	exr	Increase In Operating Lease Right Of Use Assets IncreaseInOperatingLeaseRightOfUseAssets	127532000	USD
CY2019Q3	exr	Increase In Operating Lease Right Of Use Assets IncreaseInOperatingLeaseRightOfUseAssets	52224000	USD
CY2019Q3	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	42000	USD
	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	126000	USD
CY2019Q3	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	73000	USD
	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	216000	USD
CY2019Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	7060000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	12737000	USD
CY2019Q3	us-gaap	Variable Lease Cost VariableLeaseCost	1624000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	3426000	USD
CY2019Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	28000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	138000	USD
CY2019Q3	us-gaap	Lease Cost LeaseCost	8827000	USD
	us-gaap	Lease Cost LeaseCost	16643000	USD
CY2019Q3	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	58000	USD
	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	173000	USD
CY2019Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	6573000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	12122000	USD
CY2019Q3	exr	Cash Paid For Operating Activities Lessee CashPaidForOperatingActivitiesLessee	6631000	USD
	exr	Cash Paid For Operating Activities Lessee CashPaidForOperatingActivitiesLessee	12295000	USD
CY2019Q3	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	52413000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	277430000	USD
CY2019Q3	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	0	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	8050000	USD
CY2019Q3	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P47Y1M6D
CY2019Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P14Y10M24D
CY2019Q3	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0607
CY2019Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0365
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	6982000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Remainder Of Fiscal Year FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear	57000	USD
CY2019Q3	exr	Lessee Operating And Finance Lease Liability Payments Remainderof Fiscal Year LesseeOperatingAndFinanceLeaseLiabilityPaymentsRemainderofFiscalYear	7039000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	28331000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	232000	USD
CY2019Q3	exr	Lessee Operating And Finance Lease Liability Payments Due Year Two LesseeOperatingAndFinanceLeaseLiabilityPaymentsDueYearTwo	28563000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	28586000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	237000	USD
CY2019Q3	exr	Lessee Operating And Finance Lease Liability Payments Due Year Three LesseeOperatingAndFinanceLeaseLiabilityPaymentsDueYearThree	28823000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	28611000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	255000	USD
CY2019Q3	exr	Lessee Operating And Finance Lease Liability Payments Due Year Four LesseeOperatingAndFinanceLeaseLiabilityPaymentsDueYearFour	28866000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	28698000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	255000	USD
CY2019Q3	exr	Lessee Operating And Finance Lease Liability Payments Due Year Five LesseeOperatingAndFinanceLeaseLiabilityPaymentsDueYearFive	28953000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	252832000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	16777000	USD
CY2019Q3	exr	Lessee Operating And Finance Lease Liability Payments Due After Year Five LesseeOperatingAndFinanceLeaseLiabilityPaymentsDueAfterYearFive	269609000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	374040000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	17813000	USD
CY2019Q3	exr	Lessee Operating And Finance Lease Liability Payments Due LesseeOperatingAndFinanceLeaseLiabilityPaymentsDue	391853000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	94991000	USD
CY2019Q3	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	12990000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	62822000	USD
CY2019Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	56051000	USD
CY2019Q3	exr	Lessee Operating And Finance Lease Liability Undiscounted Excess Amount LesseeOperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount	107981000	USD
CY2019Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	279049000	USD
CY2019Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	4823000	USD
CY2019Q3	exr	Lessee Operating And Finance Lease Liability LesseeOperatingAndFinanceLeaseLiability	283872000	USD
CY2018Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	52283000	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	13000000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	10120000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	36063000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	30849000	USD
CY2019Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	22519000	USD
CY2018Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	19707000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	68548000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	165116000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	155924000	USD
CY2019Q3	exr	Gains Losses On Real Estate Transactionsand Earn Out From Prior Acquisitionand Saleof Other Assets GainsLossesOnRealEstateTransactionsandEarnOutFromPriorAcquisitionandSaleofOtherAssets	0	USD
CY2018Q3	exr	Gains Losses On Real Estate Transactionsand Earn Out From Prior Acquisitionand Saleof Other Assets GainsLossesOnRealEstateTransactionsandEarnOutFromPriorAcquisitionandSaleofOtherAssets	30807000	USD
	exr	Gains Losses On Real Estate Transactionsand Earn Out From Prior Acquisitionand Saleof Other Assets GainsLossesOnRealEstateTransactionsandEarnOutFromPriorAcquisitionandSaleofOtherAssets	1205000	USD
	exr	Gains Losses On Real Estate Transactionsand Earn Out From Prior Acquisitionand Saleof Other Assets GainsLossesOnRealEstateTransactionsandEarnOutFromPriorAcquisitionandSaleofOtherAssets	30807000	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	46908000	USD
CY2018Q3	us-gaap	Interest Expense InterestExpense	45926000	USD
	us-gaap	Interest Expense InterestExpense	141716000	USD
	us-gaap	Interest Expense InterestExpense	130239000	USD
CY2019Q3	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	1186000	USD
CY2018Q3	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	1140000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	3533000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	3525000	USD
CY2019Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	2799000	USD
CY2018Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	1371000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	5905000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	3997000	USD
CY2019Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2704000	USD
CY2018Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	3622000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	8455000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	10648000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4052000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2638000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8580000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	115995000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6077000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	139687000	USD
	us-gaap	Profit Loss ProfitLoss	330844000	USD
	us-gaap	Profit Loss ProfitLoss	337830000	USD

Files In Submission

Name	View Source	Status
0001628280-19-013342-index-headers.html	Edgar Link	pending
0001628280-19-013342-index.html	Edgar Link	pending
0001628280-19-013342.txt	Edgar Link	pending
0001628280-19-013342-xbrl.zip	Edgar Link	pending
exr-20190930.xsd	Edgar Link	pending
exr-20190930_cal.xml	Edgar Link	unprocessable
exr-20190930_def.xml	Edgar Link	unprocessable
exr-20190930_lab.xml	Edgar Link	unprocessable
exr-20190930_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
q3201910qex311.htm	Edgar Link	pending
q3201910qex312.htm	Edgar Link	pending
q3201910qex321.htm	Edgar Link	pending
q3201910qexrdocument.htm	Edgar Link	pending
q3201910qexrdocument_htm.xml	Edgar Link	completed
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$EXR
Extra Space Storage Inc. Stock $exr

2019 Q4 Form 10-Q Financial Statement

#000162828019013342 Filed on November 05, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EXR Extra Space Storage Inc. Stock $exr

2019 Q4 Form 10-Q Financial Statement

#000162828019013342 Filed on November 05, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EXR
Extra Space Storage Inc. Stock $exr