$EXR
Extra Space Storage Inc. Stock $exr

$exr Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-Q Financial Statement

#000162828021021482 Filed on November 03, 2021

Income Statement

Concept	2021 Q4	2021 Q3	2020 Q3
Revenue	$427.4M	$412.5M	$343.0M
YoY Change	20.9%	20.25%	1.64%
Cost Of Revenue	$102.4M	$92.79M	$92.32M
YoY Change	8.1%	0.51%	4.14%
Gross Profit	$325.0M	$319.7M	$250.7M
YoY Change	25.58%	27.52%	0.74%
Gross Profit Margin	76.05%	77.5%	73.09%
Selling, General & Admin	$27.92M	$24.40M	$23.90M
YoY Change	14.42%	2.07%	6.22%
% of Gross Profit	8.59%	7.63%	9.53%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$62.19M	$61.52M	$56.41M
YoY Change	9.69%	9.05%	0.64%
% of Gross Profit	19.14%	19.24%	22.5%
Operating Expenses	$90.11M	$85.91M	$80.30M
YoY Change	11.11%	6.99%	2.16%
Operating Profit	$234.9M	$226.3M	$163.2M
YoY Change	32.19%	38.64%	0.35%
Interest Expense	-$23.92M	$39.67M	$42.21M
YoY Change	-6.56%	-6.02%	-10.01%
% of Operating Profit	-10.18%	17.53%	25.86%
Other Income/Expense, Net
YoY Change
Pretax Income	$287.9M	$198.3M	$122.9M
YoY Change	69.23%	61.37%	4.74%
Income Tax	$3.994M	$6.772M	$4.657M
% Of Pretax Income	1.39%	3.41%	3.79%
Net Earnings	$268.4M	$188.3M	$114.6M
YoY Change	71.96%	64.24%	6.06%
Net Earnings / Revenue	62.81%	45.64%	33.42%
Basic Earnings Per Share		$1.41	$0.89
Diluted Earnings Per Share	$1.911M	$1.40	$0.88
COMMON SHARES
Basic Shares Outstanding	133.9M shares	133.8M shares	128.9M shares
Diluted Shares Outstanding		140.4M shares	129.9M shares

Balance Sheet

Concept	2021 Q4	2021 Q3	2020 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$71.13M	$65.57M	$74.80M
YoY Change	-34.81%	-12.35%	20.06%
Cash & Equivalents	$71.13M	$65.57M	$74.80M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$71.13M	$65.57M	$74.80M
YoY Change	-34.81%	-12.35%	20.06%
LONG-TERM ASSETS
Property, Plant & Equipment	$29.06M	$8.502B	$8.012B
YoY Change	-99.64%	6.11%	0.97%
Goodwill	$0.00
YoY Change
Intangibles
YoY Change
Long-Term Investments	$1.177B	$979.9M	$347.8M
YoY Change	18.68%	181.74%	98.29%
Other Assets	$5.068M	$15.72M	$5.800M
YoY Change	-73.19%	170.98%	31.82%
Total Long-Term Assets	$10.40B	$9.643B	$8.686B
YoY Change	12.02%	11.01%	5.21%
TOTAL ASSETS
Total Short-Term Assets	$71.13M	$65.57M	$74.80M
Total Long-Term Assets	$10.40B	$9.643B	$8.686B
Total Assets	$10.47B	$9.708B	$8.761B
YoY Change	11.48%	10.81%	5.32%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$142.3M	$164.7M	$153.8M
YoY Change	9.45%	7.07%	25.35%
Accrued Expenses	$233.4M	$234.1M	$267.1M
YoY Change	-11.44%	-12.35%	-4.27%
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	$375.6M	$398.8M	$420.9M
YoY Change	-4.54%	-5.25%	4.78%
LONG-TERM LIABILITIES
Long-Term Debt	$5.958B	$5.584B	$5.280B
YoY Change	3.68%	5.75%	9.73%
Other Long-Term Liabilities	$355.1M	$342.9M	$292.1M
YoY Change	11.01%	17.38%	48.5%
Total Long-Term Liabilities	$6.313B	$5.927B	$5.572B
YoY Change	4.07%	6.36%	11.25%
TOTAL LIABILITIES
Total Short-Term Liabilities	$375.6M	$398.8M	$420.9M
Total Long-Term Liabilities	$6.313B	$5.927B	$5.572B
Total Liabilities	$6.689B	$6.325B	$5.993B
YoY Change	3.54%	5.54%	10.77%
SHAREHOLDERS EQUITY
Retained Earnings	-$128.2M	-$229.3M	-$392.9M
YoY Change	-63.86%	-41.65%	32.4%
Common Stock	$3.287B	$3.285B	$2.891B
YoY Change	9.51%	13.64%	0.98%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$3.116B	$2.992B	$2.389B
YoY Change
Total Liabilities & Shareholders Equity	$10.47B	$9.708B	$8.761B
YoY Change	11.48%	10.81%	5.32%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2020 Q3
OPERATING ACTIVITIES
Net Income	$268.4M	$188.3M	$114.6M
YoY Change	71.96%	64.24%	6.06%
Depreciation, Depletion And Amortization	$62.19M	$61.52M	$56.41M
YoY Change	9.69%	9.05%	0.64%
Cash From Operating Activities	$223.2M	$265.6M	$191.2M
YoY Change	18.77%	38.9%	5.58%
INVESTING ACTIVITIES
Capital Expenditures	-$658.0M	-$232.1M	-$122.8M
YoY Change	239.71%	89.0%	124.09%
Acquisitions
YoY Change
Other Investing Activities	$238.3M	-$40.40M	-$129.2M
YoY Change	-159.9%	-68.73%	-193.08%
Cash From Investing Activities	-$419.7M	-$272.5M	-$251.9M
YoY Change	-29.05%	8.17%	-399.88%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	191.5M	28.44M	79.60M
YoY Change	-57.55%	-64.27%	-131.33%
NET CHANGE
Cash From Operating Activities	223.2M	265.6M	191.2M
Cash From Investing Activities	-419.7M	-272.5M	-251.9M
Cash From Financing Activities	191.5M	28.44M	79.60M
Net Change In Cash	-5.087M	21.53M	18.90M
YoY Change	-110.73%	13.93%	71.82%
FREE CASH FLOW
Cash From Operating Activities	$223.2M	$265.6M	$191.2M
Capital Expenditures	-$658.0M	-$232.1M	-$122.8M
Free Cash Flow	$881.2M	$497.7M	$314.0M
YoY Change	130.92%	58.49%	33.11%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Entity Central Index Key EntityCentralIndexKey	0001289490
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2021-09-30
	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
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
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	us-gaap	Profit Loss ProfitLoss	351273000	USD
CY2021Q3	us-gaap	Noncontrolling Interest In Net Income Loss Preferred Unit Holders Redeemable NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable	3529000	USD
CY2020Q3	us-gaap	Noncontrolling Interest In Net Income Loss Preferred Unit Holders Redeemable NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable	3248000	USD
	us-gaap	Noncontrolling Interest In Net Income Loss Preferred Unit Holders Redeemable NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable	10647000	USD
	us-gaap	Noncontrolling Interest In Net Income Loss Preferred Unit Holders Redeemable NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable	9498000	USD
CY2021Q3	exr	Minority Interest In Net Income Loss Operating Partnerships And Other MinorityInterestInNetIncomeLossOperatingPartnershipsAndOther	8015000	USD
CY2020Q3	exr	Minority Interest In Net Income Loss Operating Partnerships And Other MinorityInterestInNetIncomeLossOperatingPartnershipsAndOther	5973000	USD
	exr	Minority Interest In Net Income Loss Operating Partnerships And Other MinorityInterestInNetIncomeLossOperatingPartnershipsAndOther	24031000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	188276000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	114633000	USD
	us-gaap	Net Income Loss NetIncomeLoss	559222000	USD
	us-gaap	Net Income Loss NetIncomeLoss	325723000	USD
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.41
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.89
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.19
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.52
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.40
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.88
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.19
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.50
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	133809750	shares
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	128862341	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	133197903	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	129044954	shares
CY2021Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	140425269	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	129871096	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	139854881	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	130066121	shares
CY2021Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.25
CY2020Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.90
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	3.25
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	2.70
CY2021Q3	us-gaap	Profit Loss ProfitLoss	199820000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	123854000	USD
	us-gaap	Profit Loss ProfitLoss	593900000	USD
	us-gaap	Profit Loss ProfitLoss	351273000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	8055000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	11181000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	36685000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-83791000	USD
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	207875000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	135035000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	630585000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	267482000	USD
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	11924000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	9854000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	36425000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	21501000	USD
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	195951000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	125181000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	594160000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	245981000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2921694000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	944000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	2980000	USD
CY2020Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	52204000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	116162000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-89244000	USD
CY2020Q1	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	8505000	USD
CY2020Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.90
CY2020Q1	us-gaap	Dividends Common Stock DividendsCommonStock	117197000	USD
CY2020Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2774630000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	726000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	4884000	USD
CY2020Q2	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	15615000	USD
CY2020Q2	exr	Noncontrolling Interest Other Decrease Increase NoncontrollingInterestOtherDecreaseIncrease	-68000	USD
CY2020Q2	us-gaap	Profit Loss ProfitLoss	111257000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5728000	USD
CY2020Q2	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	8386000	USD
CY2020Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.90
CY2020Q2	us-gaap	Dividends Common Stock DividendsCommonStock	116318000	USD
CY2020Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2745518000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1200000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	3452000	USD
CY2020Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	54000	USD
CY2020Q3	exr	Noncontrolling Interest Increase From Repayment Of Receivable Pledged As Collateral NoncontrollingInterestIncreaseFromRepaymentOfReceivablePledgedAsCollateral	8226000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	123854000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	11181000	USD
CY2020Q3	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	8370000	USD
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.90
CY2020Q3	us-gaap	Dividends Common Stock DividendsCommonStock	116185000	USD
CY2020Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2767822000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2936124000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	4254000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	3652000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	273720000	USD
CY2021Q1	exr	Noncontrolling Interest Other Decrease Increase NoncontrollingInterestOtherDecreaseIncrease	50000	USD
CY2021Q1	us-gaap	Profit Loss ProfitLoss	215501000	USD
CY2021Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	4012000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	23013000	USD
CY2021Q1	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	9025000	USD
CY2021Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.00
CY2021Q1	us-gaap	Dividends Common Stock DividendsCommonStock	132540000	USD
CY2021Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3314649000	USD
CY2021Q2	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	4983000	USD
CY2021Q2	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	211000	USD
CY2021Q2	exr	Noncontrolling Interest Increase From Repayment Of Receivable Pledged As Collateral NoncontrollingInterestIncreaseFromRepaymentOfReceivablePledgedAsCollateral	411000	USD
CY2021Q2	exr	Noncontrolling Interest Other Decrease Increase NoncontrollingInterestOtherDecreaseIncrease	-150000	USD
CY2021Q2	us-gaap	Profit Loss ProfitLoss	178579000	USD
CY2021Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	5617000	USD
CY2021Q2	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	8974000	USD
CY2021Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.00
CY2021Q2	us-gaap	Dividends Common Stock DividendsCommonStock	133777000	USD
CY2021Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3360955000	USD
CY2021Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	318000	USD
CY2021Q3	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	151000	USD
CY2021Q3	exr	Adjustments To Paid In Capital Purchase Of Equity Interest In Consolidated Joint Venture AdjustmentsToPaidInCapitalPurchaseOfEquityInterestInConsolidatedJointVenture	12050000	USD
CY2021Q3	exr	Noncontrolling Interest Other Decrease Increase NoncontrollingInterestOtherDecreaseIncrease	225000	USD
CY2021Q3	us-gaap	Profit Loss ProfitLoss	199820000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8055000	USD
CY2021Q3	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	10585000	USD
CY2021Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.25
CY2021Q3	us-gaap	Dividends Common Stock DividendsCommonStock	167274000	USD
CY2021Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3382875000	USD
	us-gaap	Profit Loss ProfitLoss	593900000	USD
	us-gaap	Profit Loss ProfitLoss	351273000	USD
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	179685000	USD
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	167705000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	6656000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	7356000	USD
	exr	Amortization Of Debt Discount Premium Equity Component Of Senior Notes AmortizationOfDebtDiscountPremiumEquityComponentOfSeniorNotes	0	USD
	exr	Amortization Of Debt Discount Premium Equity Component Of Senior Notes AmortizationOfDebtDiscountPremiumEquityComponentOfSeniorNotes	3675000	USD
	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	1396000	USD
	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	799000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	12647000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	11316000	USD
	exr	Noncash Interest Income NoncashInterestIncome	25871000	USD
	exr	Noncash Interest Income NoncashInterestIncome	0	USD
	exr	Gains Losses On Real Estate Transactions Net Of Impairment Of Real Estate GainsLossesOnRealEstateTransactionsNetOfImpairmentOfRealEstate	63883000	USD
	exr	Gains Losses On Real Estate Transactions Net Of Impairment Of Real Estate GainsLossesOnRealEstateTransactionsNetOfImpairmentOfRealEstate	0	USD
	exr	Income Loss From Unconsolidated Real Estate Joint Ventures IncomeLossFromUnconsolidatedRealEstateJointVentures	6251000	USD
	exr	Income Loss From Unconsolidated Real Estate Joint Ventures IncomeLossFromUnconsolidatedRealEstateJointVentures	0	USD
	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-4640000	USD
	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-5097000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	10612000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	17977000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	33907000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	41780000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	3054000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	12243000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	729268000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	583267000	USD
	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	589382000	USD
	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	151244000	USD
	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	42719000	USD
	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	46112000	USD
	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	196241000	USD
	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	234000	USD
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	20834000	USD
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	13937000	USD
	exr	Return Of Investment Real Estate Ventures ReturnOfInvestmentRealEstateVentures	31534000	USD
	exr	Return Of Investment Real Estate Ventures ReturnOfInvestmentRealEstateVentures	371000	USD
	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	143270000	USD
	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	149750000	USD
	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	36874000	USD
	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	0	USD
	us-gaap	Proceeds From Sale Of Notes Receivable ProceedsFromSaleOfNotesReceivable	116822000	USD
	us-gaap	Proceeds From Sale Of Notes Receivable ProceedsFromSaleOfNotesReceivable	0	USD
	us-gaap	Payments To Acquire Furniture And Fixtures PaymentsToAcquireFurnitureAndFixtures	3058000	USD
	us-gaap	Payments To Acquire Furniture And Fixtures PaymentsToAcquireFurnitureAndFixtures	3407000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-417792000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-363845000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	273358000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	3323000000	USD
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	1419000000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	4526549000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	1192750000	USD
	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	1040349000	USD
	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	0	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	10698000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	3161000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	4572000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	2870000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	67873000	USD
	exr	Cash Portion Of Redemption Of Preferred Operating Partnership Units CashPortionOfRedemptionOfPreferredOperatingPartnershipUnits	472000	USD
	exr	Cash Portion Of Redemption Of Preferred Operating Partnership Units CashPortionOfRedemptionOfPreferredOperatingPartnershipUnits	1000000	USD
	exr	Proceeds From Collection Of Notes Receivable Collateralized By Op Units ProceedsFromCollectionOfNotesReceivableCollateralizedByOPUnits	411000	USD
	exr	Proceeds From Collection Of Notes Receivable Collateralized By Op Units ProceedsFromCollectionOfNotesReceivableCollateralizedByOPUnits	0	USD
	exr	Proceeds From Collection Of Notes Receivable Collateralized By Preferred Op Units ProceedsFromCollectionOfNotesReceivableCollateralizedByPreferredOPUnits	0	USD
	exr	Proceeds From Collection Of Notes Receivable Collateralized By Preferred Op Units ProceedsFromCollectionOfNotesReceivableCollateralizedByPreferredOPUnits	8226000	USD
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	68000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	433591000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	349700000	USD
	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	28584000	USD
	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	25261000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-358204000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-209581000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-46728000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	9841000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	128009000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	70733000	USD
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	81281000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	80574000	USD
	us-gaap	Interest Paid Net InterestPaidNet	116937000	USD
	us-gaap	Interest Paid Net InterestPaidNet	119977000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	21365000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	5181000	USD
	exr	Noncontrolling Interest Decrease From Redemptions Of Operating Partnership Units NoncontrollingInterestDecreaseFromRedemptionsOfOperatingPartnershipUnits	2412000	USD
	exr	Noncontrolling Interest Decrease From Redemptions Of Operating Partnership Units NoncontrollingInterestDecreaseFromRedemptionsOfOperatingPartnershipUnits	4005000	USD
	exr	Redemption Of Operating Partnership Units Held By Noncontrolling Interest Including Additional Paid In Capital RedemptionOfOperatingPartnershipUnitsHeldByNoncontrollingInterestIncludingAdditionalPaidInCapital	2412000	USD
	exr	Redemption Of Operating Partnership Units Held By Noncontrolling Interest Including Additional Paid In Capital RedemptionOfOperatingPartnershipUnitsHeldByNoncontrollingInterestIncludingAdditionalPaidInCapital	4005000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	2911000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	6779000	USD
	exr	Establishment Of Operating Lease Liability EstablishmentOfOperatingLeaseLiability	2911000	USD
	exr	Establishment Of Operating Lease Liability EstablishmentOfOperatingLeaseLiability	6779000	USD
	exr	Noncash Or Part Noncash Acquisition Net Real Estate Assets Acquired NoncashOrPartNoncashAcquisitionNetRealEstateAssetsAcquired	2228000	USD
	exr	Noncash Or Part Noncash Acquisition Net Real Estate Assets Acquired NoncashOrPartNoncashAcquisitionNetRealEstateAssetsAcquired	-13833000	USD
	exr	Asset Acquisition Consideration Transferred Investment In Real Estate Joint Ventures AssetAcquisitionConsiderationTransferredInvestmentInRealEstateJointVentures	2673000	USD
	exr	Asset Acquisition Consideration Transferred Investment In Real Estate Joint Ventures AssetAcquisitionConsiderationTransferredInvestmentInRealEstateJointVentures	0	USD
	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	445000	USD
	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	13833000	USD
	exr	Real Estate Additions Portion Not Yet Paid RealEstateAdditionsPortionNotYetPaid	756000	USD
	exr	Real Estate Additions Portion Not Yet Paid RealEstateAdditionsPortionNotYetPaid	676000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	756000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	676000	USD
	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	2834000	USD
	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	2724000	USD
	exr	Redemption Of Operating Partnership Units For Common Stock Including Additional Paid In Capital RedemptionOfOperatingPartnershipUnitsForCommonStockIncludingAdditionalPaidInCapital	2834000	USD
	exr	Redemption Of Operating Partnership Units For Common Stock Including Additional Paid In Capital RedemptionOfOperatingPartnershipUnitsForCommonStockIncludingAdditionalPaidInCapital	2724000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	41438000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	8605000	USD
	exr	Establishment Of Finance Lease Liability EstablishmentOfFinanceLeaseLiability	41438000	USD
	exr	Establishment Of Finance Lease Liability EstablishmentOfFinanceLeaseLiability	8605000	USD
	exr	Noncash Investment In Joint Venture NoncashInvestmentInJointVenture	33878000	USD
	exr	Noncash Investment In Joint Venture NoncashInvestmentInJointVenture	0	USD
	exr	Real Estate Assets Transferred For Investment In Joint Venture RealEstateAssetsTransferredForInvestmentInJointVenture	33878000	USD
	exr	Real Estate Assets Transferred For Investment In Joint Venture RealEstateAssetsTransferredForInvestmentInJointVenture	0	USD
	us-gaap	Nature Of Operations NatureOfOperations	ORGANIZATION<div style="margin-top:6pt"><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 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><span><br/></span></div><div><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 September 30, 2021, the Company had direct and indirect equity interests in 1,227 stores. In addition, the Company managed 827 stores for third parties, bringing the total number of stores which it owns and/or manages to 2,054. These stores are located in 41 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>
CY2021Q3	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	1227	store
CY2021Q3	exr	Number Of Real Estate Properties Franchisees And Others NumberOfRealEstatePropertiesFranchiseesAndOthers	827	store
CY2021Q3	exr	Number Of Real Estate Properties Owned And Or Managed NumberOfRealEstatePropertiesOwnedAndOrManaged	2054	store
CY2021Q3	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	41	state
CY2021Q3	exr	Number Of Operating Stores Held For Sale NumberOfOperatingStoresHeldForSale	16	store
CY2021Q3	exr	Average Share Price Per Share AverageSharePricePerShare	176.78
CY2020Q3	exr	Average Share Price Per Share AverageSharePricePerShare	103.36
CY2021Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	889860	shares
CY2020Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	8227533	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1055271	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	8349818	shares
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	188276000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	114633000	USD
	us-gaap	Net Income Loss NetIncomeLoss	559222000	USD
	us-gaap	Net Income Loss NetIncomeLoss	325723000	USD
CY2021Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	260000	USD
CY2020Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	177000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	800000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	513000	USD
CY2021Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	188016000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	114456000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	558422000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	325210000	USD
CY2021Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
CY2020Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	-177000	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	-513000	USD
CY2021Q3	exr	Net Income Loss Attributable To Noncontrolling Interest In Operating Partnership NetIncomeLossAttributableToNoncontrollingInterestInOperatingPartnership	9810000	USD
CY2020Q3	exr	Net Income Loss Attributable To Noncontrolling Interest In Operating Partnership NetIncomeLossAttributableToNoncontrollingInterestInOperatingPartnership	0	USD
	exr	Net Income Loss Attributable To Noncontrolling Interest In Operating Partnership NetIncomeLossAttributableToNoncontrollingInterestInOperatingPartnership	29395000	USD
	exr	Net Income Loss Attributable To Noncontrolling Interest In Operating Partnership NetIncomeLossAttributableToNoncontrollingInterestInOperatingPartnership	0	USD
CY2021Q3	exr	Income Loss Attributable To Noncontrolling Interest Fixed Component IncomeLossAttributableToNoncontrollingInterestFixedComponent	572000	USD
CY2020Q3	exr	Income Loss Attributable To Noncontrolling Interest Fixed Component IncomeLossAttributableToNoncontrollingInterestFixedComponent	0	USD
	exr	Income Loss Attributable To Noncontrolling Interest Fixed Component IncomeLossAttributableToNoncontrollingInterestFixedComponent	1716000	USD
	exr	Income Loss Attributable To Noncontrolling Interest Fixed Component IncomeLossAttributableToNoncontrollingInterestFixedComponent	0	USD
CY2021Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	197254000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	114633000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	586101000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	325723000	USD
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	133809750	shares
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	128862341	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	133197903	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	129044954	shares
CY2021Q3	exr	Incremental Common Shares Attributable To Conversion Of Operating Partnership Units IncrementalCommonSharesAttributableToConversionOfOperatingPartnershipUnits	5733936	shares
CY2020Q3	exr	Incremental Common Shares Attributable To Conversion Of Operating Partnership Units IncrementalCommonSharesAttributableToConversionOfOperatingPartnershipUnits	0	shares
	exr	Incremental Common Shares Attributable To Conversion Of Operating Partnership Units IncrementalCommonSharesAttributableToConversionOfOperatingPartnershipUnits	5767132	shares
	exr	Incremental Common Shares Attributable To Conversion Of Operating Partnership Units IncrementalCommonSharesAttributableToConversionOfOperatingPartnershipUnits	0	shares
CY2021Q3	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	0	shares
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	214909	shares
	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	0	shares
	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	212311	shares
CY2021Q3	exr	Incremental Common Shares Attributable To Share Based Payment Arrangements Stock Options IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsStockOptions	6103	shares
CY2020Q3	exr	Incremental Common Shares Attributable To Share Based Payment Arrangements Stock Options IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsStockOptions	793846	shares
	exr	Incremental Common Shares Attributable To Share Based Payment Arrangements Stock Options IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsStockOptions	14366	shares
	exr	Incremental Common Shares Attributable To Share Based Payment Arrangements Stock Options IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsStockOptions	808856	shares
CY2021Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	140425269	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	129871096	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	139854881	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	130066121	shares
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.41
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.89
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.19
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.52
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.40
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.88
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.19
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.50
CY2021Q3	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	12	store
CY2021Q3	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	186689000	USD
CY2021Q3	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	185497000	USD
CY2021Q3	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2021Q3	exr	Noncash Or Part Noncash Acquisition Finance Lease Liability NoncashOrPartNoncashAcquisitionFinanceLeaseLiability	445000	USD
CY2021Q3	exr	Asset Acquisition Consideration Transferred Investment In Real Estate Joint Ventures AssetAcquisitionConsiderationTransferredInvestmentInRealEstateJointVentures	0	USD
CY2021Q3	us-gaap	Asset Acquisition Consideration Transferred Other Assets AssetAcquisitionConsiderationTransferredOtherAssets	-747000	USD
CY2021Q3	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	186689000	USD
CY2021Q2	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	15	store
CY2021Q2	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	193783000	USD
CY2021Q2	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	190729000	USD
CY2021Q2	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2021Q2	exr	Noncash Or Part Noncash Acquisition Finance Lease Liability NoncashOrPartNoncashAcquisitionFinanceLeaseLiability	0	USD
CY2021Q2	exr	Asset Acquisition Consideration Transferred Investment In Real Estate Joint Ventures AssetAcquisitionConsiderationTransferredInvestmentInRealEstateJointVentures	2673000	USD
CY2021Q2	us-gaap	Asset Acquisition Consideration Transferred Other Assets AssetAcquisitionConsiderationTransferredOtherAssets	-381000	USD
CY2021Q2	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	193783000	USD
CY2021Q1	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	9	store
CY2021Q1	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	151884000	USD
CY2021Q1	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	148940000	USD
CY2021Q1	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2021Q1	exr	Noncash Or Part Noncash Acquisition Finance Lease Liability NoncashOrPartNoncashAcquisitionFinanceLeaseLiability	0	USD
CY2021Q1	exr	Asset Acquisition Consideration Transferred Investment In Real Estate Joint Ventures AssetAcquisitionConsiderationTransferredInvestmentInRealEstateJointVentures	0	USD
CY2021Q1	us-gaap	Asset Acquisition Consideration Transferred Other Assets AssetAcquisitionConsiderationTransferredOtherAssets	-2944000	USD
CY2021Q1	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	151884000	USD
	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	36	store
	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	532356000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	525166000	USD
	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
	exr	Noncash Or Part Noncash Acquisition Finance Lease Liability NoncashOrPartNoncashAcquisitionFinanceLeaseLiability	445000	USD
	exr	Asset Acquisition Consideration Transferred Investment In Real Estate Joint Ventures AssetAcquisitionConsiderationTransferredInvestmentInRealEstateJointVentures	2673000	USD
	us-gaap	Asset Acquisition Consideration Transferred Other Assets AssetAcquisitionConsiderationTransferredOtherAssets	-4072000	USD
	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	532356000	USD
CY2020Q3	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	8	store
CY2020Q3	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	101731000	USD
CY2020Q3	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	86996000	USD
CY2020Q3	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2020Q3	exr	Noncash Or Part Noncash Acquisition Finance Lease Liability NoncashOrPartNoncashAcquisitionFinanceLeaseLiability	13833000	USD
CY2020Q3	exr	Asset Acquisition Consideration Transferred Investment In Real Estate Joint Ventures AssetAcquisitionConsiderationTransferredInvestmentInRealEstateJointVentures	0	USD
CY2020Q3	us-gaap	Asset Acquisition Consideration Transferred Other Assets AssetAcquisitionConsiderationTransferredOtherAssets	-902000	USD
CY2020Q3	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	101731000	USD
CY2020Q2	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	0	store
CY2020Q2	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	0	USD
CY2020Q2	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	0	USD
CY2020Q2	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2020Q2	exr	Noncash Or Part Noncash Acquisition Finance Lease Liability NoncashOrPartNoncashAcquisitionFinanceLeaseLiability	0	USD
CY2020Q2	exr	Asset Acquisition Consideration Transferred Investment In Real Estate Joint Ventures AssetAcquisitionConsiderationTransferredInvestmentInRealEstateJointVentures	0	USD
CY2020Q2	us-gaap	Asset Acquisition Consideration Transferred Other Assets AssetAcquisitionConsiderationTransferredOtherAssets	0	USD
CY2020Q2	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	0	USD
CY2020Q1	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	2	store
CY2020Q1	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	19399000	USD
CY2020Q1	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	19354000	USD
CY2020Q1	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2020Q1	exr	Noncash Or Part Noncash Acquisition Finance Lease Liability NoncashOrPartNoncashAcquisitionFinanceLeaseLiability	0	USD
CY2020Q1	exr	Asset Acquisition Consideration Transferred Investment In Real Estate Joint Ventures AssetAcquisitionConsiderationTransferredInvestmentInRealEstateJointVentures	0	USD
CY2020Q1	us-gaap	Asset Acquisition Consideration Transferred Other Assets AssetAcquisitionConsiderationTransferredOtherAssets	-45000	USD
CY2020Q1	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	19399000	USD
	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	10	store
	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	121130000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	106350000	USD
	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
	exr	Noncash Or Part Noncash Acquisition Finance Lease Liability NoncashOrPartNoncashAcquisitionFinanceLeaseLiability	13833000	USD
	exr	Asset Acquisition Consideration Transferred Investment In Real Estate Joint Ventures AssetAcquisitionConsiderationTransferredInvestmentInRealEstateJointVentures	0	USD
	us-gaap	Asset Acquisition Consideration Transferred Other Assets AssetAcquisitionConsiderationTransferredOtherAssets	-947000	USD
	us-gaap	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	121130000	USD
CY2021Q3	exr	Number Of Stores Acquired Subject To Finance Leases NumberOfStoresAcquiredSubjectToFinanceLeases	1	store
CY2021Q2	exr	Number Of Real Estate Properties Acquired Previously Held In Joint Ventures NumberOfRealEstatePropertiesAcquiredPreviouslyHeldInJointVentures	2	store
CY2020Q3	exr	Number Of Stores Acquired Subject To Finance Leases NumberOfStoresAcquiredSubjectToFinanceLeases	2	store
CY2021Q1	exr	Number Of Stores Sold NumberOfStoresSold	16	store
CY2021Q1	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	132759000	USD
CY2021Q1	us-gaap	Equity Method Investment Ownership Percentage EquityMethodInvestmentOwnershipPercentage	0.55
CY2021Q1	exr	Exchange Of Real Estate For Interest In Joint Venture ExchangeOfRealEstateForInterestInJointVenture	33878000	USD
CY2021Q1	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	64804000	USD
CY2021Q3	exr	Equity Method Investment Number Of Stores EquityMethodInvestmentNumberOfStores	257	store
CY2021Q3	exr	Investment In Unconsolidated Real Estate Entities Net Of Distributions InvestmentInUnconsolidatedRealEstateEntitiesNetOfDistributions	310569000	USD
CY2020Q4	exr	Investment In Unconsolidated Real Estate Entities Net Of Distributions InvestmentInUnconsolidatedRealEstateEntitiesNetOfDistributions	350318000	USD
CY2021Q1	exr	Number Of Stores Sold NumberOfStoresSold	16	store
CY2021Q1	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	132759000	USD
CY2021Q1	exr	Exchange Of Real Estate For Interest In Joint Venture ExchangeOfRealEstateForInterestInJointVenture	33878000	USD
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	20834000	USD
	exr	Equity Method Investments Number Of Stores Acquired EquityMethodInvestmentsNumberOfStoresAcquired	15	store
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
CY2021Q3	us-gaap	Dividends Receivable DividendsReceivable	29945000	USD
CY2020Q4	us-gaap	Dividends Receivable DividendsReceivable	4889000	USD
CY2021Q3	exr	Debt Securities Held To Maturity And Financing Receivable After Allowance For Credit Loss And Interest Receivable DebtSecuritiesHeldToMaturityAndFinancingReceivableAfterAllowanceForCreditLossAndInterestReceivable	606115000	USD
CY2020Q4	exr	Debt Securities Held To Maturity And Financing Receivable After Allowance For Credit Loss And Interest Receivable DebtSecuritiesHeldToMaturityAndFinancingReceivableAfterAllowanceForCreditLossAndInterestReceivable	593810000	USD
CY2020Q4	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	300000000	USD
CY2020Q4	exr	Debt Securities Held To Maturity Term DebtSecuritiesHeldToMaturityTerm	P5Y
CY2020Q4	exr	Debt Securities Held To Maturity Extension Option DebtSecuritiesHeldToMaturityExtensionOption	2	extension_option
CY2020Q4	exr	Debt Securities Held To Maturity Extension Option DebtSecuritiesHeldToMaturityExtensionOption	2	extension_option
CY2020Q4	exr	Debt Securities Held To Maturity Extension Term DebtSecuritiesHeldToMaturityExtensionTerm	P1Y
CY2020Q4	exr	Debt Securities Held To Maturity Period After Which Preferred Dividends Increase Annually DebtSecuritiesHeldToMaturityPeriodAfterWhichPreferredDividendsIncreaseAnnually	P5Y
CY2021Q3	exr	Financing Receivable Extension Option FinancingReceivableExtensionOption	2	extension_option
	exr	Financing Receivable Extension Term FinancingReceivableExtensionTerm	P1Y
	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	143270000	USD
CY2021Q3	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	35685000	USD
CY2021Q3	us-gaap	Derivative Number Of Instruments Held DerivativeNumberOfInstrumentsHeld	20	derivative
CY2021Q3	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	1986266000	USD
CY2021Q3	exr	Derivative With Contingent Features Fair Value Of Asset Liability Net DerivativeWithContingentFeaturesFairValueOfAssetLiabilityNet	-63272000	USD
CY2021Q3	exr	Derivative Instruments With Contingent Features Contingent Cash Settlement Value DerivativeInstrumentsWithContingentFeaturesContingentCashSettlementValue	63272000	USD
CY2021Q3	us-gaap	Interest Expense Debt Excluding Amortization InterestExpenseDebtExcludingAmortization	0	USD
CY2020Q3	us-gaap	Interest Expense Debt Excluding Amortization InterestExpenseDebtExcludingAmortization	4492000	USD
	us-gaap	Interest Expense Debt Excluding Amortization InterestExpenseDebtExcludingAmortization	0	USD
	us-gaap	Interest Expense Debt Excluding Amortization InterestExpenseDebtExcludingAmortization	8984000	USD
CY2021Q3	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	0	USD
CY2020Q3	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	1233000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	0	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	3675000	USD
CY2021Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	0	USD
CY2020Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	5725000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	0	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	12659000	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	206573000	USD
CY2020Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	400000000	USD
	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0	shares
CY2021Q3	us-gaap	Due From Related Parties Noncurrent DueFromRelatedPartiesNoncurrent	100000000	USD
CY2020Q4	us-gaap	Due From Related Parties Noncurrent DueFromRelatedPartiesNoncurrent	100000000	USD
CY2021Q3	us-gaap	Preferred Units Preferred Partners Capital Accounts PreferredUnitsPreferredPartnersCapitalAccounts	170248000	USD
CY2020Q4	us-gaap	Preferred Units Preferred Partners Capital Accounts PreferredUnitsPreferredPartnersCapitalAccounts	172052000	USD
CY2014Q4	us-gaap	Origination Of Notes Receivable From Related Parties OriginationOfNotesReceivableFromRelatedParties	20230000	USD
CY2014Q4	exr	Notes Receivable Stated Interest Rate NotesReceivableStatedInterestRate	0.050
CY2014Q4	exr	Notes Receivable Stated Interest Rate NotesReceivableStatedInterestRate	0.050
	exr	Average Closing Market Price Measurement Period AverageClosingMarketPriceMeasurementPeriod	P10D
	exr	Average Closing Market Price Measurement Period AverageClosingMarketPriceMeasurementPeriod	P10D
CY2021Q3	exr	Common Stock Average Closing Market Price CommonStockAverageClosingMarketPrice	174.98
CY2021Q3	us-gaap	Preferred Units Outstanding PreferredUnitsOutstanding	5733498	shares
CY2021Q3	exr	Operating Partnership Units Redemption Amount OperatingPartnershipUnitsRedemptionAmount	1003247000	USD
	exr	Noncontrolling Interest Operating Partnership Units Redeemed For Common Stock NoncontrollingInterestOperatingPartnershipUnitsRedeemedForCommonStock	64287	shares
	exr	Noncontrolling Interest Operating Partnership Units Redeemed For Common Stock NoncontrollingInterestOperatingPartnershipUnitsRedeemedForCommonStock	108862	shares
CY2021Q3	exr	Noncontrolling Interest Operating Partnership Units Redeemed For Cash NoncontrollingInterestOperatingPartnershipUnitsRedeemedForCash	3000	shares
CY2020Q3	exr	Noncontrolling Interest Operating Partnership Units Redeemed For Cash NoncontrollingInterestOperatingPartnershipUnitsRedeemedForCash	0	shares
CY2021Q3	exr	Noncontrolling Interest Operating Partnership Units Redeemed Cash Paid NoncontrollingInterestOperatingPartnershipUnitsRedeemedCashPaid	472000	USD
CY2020Q3	exr	Noncontrolling Interest Operating Partnership Units Redeemed Cash Paid NoncontrollingInterestOperatingPartnershipUnitsRedeemedCashPaid	0	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2021Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	16879000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	13307000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	47320000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	38299000	USD
CY2021Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	24395000	USD
CY2020Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	23894000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	74276000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	72242000	USD
CY2021Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	61516000	USD
CY2020Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	56412000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	179685000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	167705000	USD
CY2021Q3	exr	Gains Losses On Real Estate Transactions And Earn Out From Prior Acquisition And Sale Of Other Assets GainsLossesOnRealEstateTransactionsAndEarnOutFromPriorAcquisitionAndSaleOfOtherAssets	0	USD
CY2020Q3	exr	Gains Losses On Real Estate Transactions And Earn Out From Prior Acquisition And Sale Of Other Assets GainsLossesOnRealEstateTransactionsAndEarnOutFromPriorAcquisitionAndSaleOfOtherAssets	0	USD
	exr	Gains Losses On Real Estate Transactions And Earn Out From Prior Acquisition And Sale Of Other Assets GainsLossesOnRealEstateTransactionsAndEarnOutFromPriorAcquisitionAndSaleOfOtherAssets	63883000	USD
	exr	Gains Losses On Real Estate Transactions And Earn Out From Prior Acquisition And Sale Of Other Assets GainsLossesOnRealEstateTransactionsAndEarnOutFromPriorAcquisitionAndSaleOfOtherAssets	0	USD
CY2021Q3	us-gaap	Interest Expense InterestExpense	39670000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	42213000	USD
	us-gaap	Interest Expense InterestExpense	120605000	USD
	us-gaap	Interest Expense InterestExpense	127610000	USD
CY2021Q3	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	0	USD
CY2020Q3	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	1233000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	0	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	3675000	USD
CY2021Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	11729000	USD
CY2020Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	3145000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	36871000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	6488000	USD
CY2021Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	8255000	USD
CY2020Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	5605000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	23533000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	15692000	USD
CY2021Q3	exr	Income Loss From Unconsolidated Real Estate Joint Ventures IncomeLossFromUnconsolidatedRealEstateJointVentures	0	USD
CY2020Q3	exr	Income Loss From Unconsolidated Real Estate Joint Ventures IncomeLossFromUnconsolidatedRealEstateJointVentures	0	USD
	exr	Income Loss From Unconsolidated Real Estate Joint Ventures IncomeLossFromUnconsolidatedRealEstateJointVentures	6251000	USD
	exr	Income Loss From Unconsolidated Real Estate Joint Ventures IncomeLossFromUnconsolidatedRealEstateJointVentures	0	USD
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6772000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4657000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16330000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10013000	USD
CY2021Q3	us-gaap	Profit Loss ProfitLoss	199820000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	123854000	USD
	us-gaap	Profit Loss ProfitLoss	593900000	USD
	us-gaap	Profit Loss ProfitLoss	351273000	USD

Files In Submission

Name	View Source	Status
0001628280-21-021482-index-headers.html	Edgar Link	pending
0001628280-21-021482-index.html	Edgar Link	pending
0001628280-21-021482.txt	Edgar Link	pending
0001628280-21-021482-xbrl.zip	Edgar Link	pending
exr-20210930.htm	Edgar Link	pending
exr-20210930.xsd	Edgar Link	pending
exr-20210930_cal.xml	Edgar Link	unprocessable
exr-20210930_def.xml	Edgar Link	unprocessable
exr-20210930_htm.xml	Edgar Link	completed
exr-20210930_lab.xml	Edgar Link	unprocessable
exr-20210930_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
q3202110qex221.htm	Edgar Link	pending
q3202110qex311.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

2021 Q4 Form 10-Q Financial Statement

#000162828021021482 Filed on November 03, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EXR Extra Space Storage Inc. Stock $exr

2021 Q4 Form 10-Q Financial Statement

#000162828021021482 Filed on November 03, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EXR
Extra Space Storage Inc. Stock $exr