$EXR
Extra Space Storage Inc. Stock $exr

$exr Overview Financials Valuation SEC Filings Company Website

2012 Q4 Form 10-K Financial Statement

#000104746914001686 Filed on March 03, 2014

Income Statement

Concept	2012 Q4	2012 Q3	2012 Q2
Revenue	$113.7M	$109.8M	$94.95M
YoY Change	21.94%	30.55%	21.67%
Cost Of Revenue	$34.50M	$30.12M	$26.01M
YoY Change	29.21%	24.08%	14.53%
Gross Profit	$79.10M	$79.68M	$68.94M
YoY Change	18.95%	33.18%	24.6%
Gross Profit Margin	69.59%	72.57%	72.6%
Selling, General & Admin	$12.70M	$12.60M	$12.50M
YoY Change	-4.51%	2.44%	0.81%
% of Gross Profit	16.06%	15.81%	18.13%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$21.60M	$19.77M	$16.63M
YoY Change	35.0%	37.62%	17.98%
% of Gross Profit	27.31%	24.81%	24.12%
Operating Expenses	$34.30M	$32.30M	$29.20M
YoY Change	17.47%	20.97%	10.19%
Operating Profit	$43.11M	$43.48M	$37.88M
YoY Change	25.4%	39.3%	46.51%
Interest Expense	-$3.100M	$18.42M	$15.85M
YoY Change	-79.87%	9.95%	-2.5%
% of Operating Profit	-7.19%	42.37%	41.86%
Other Income/Expense, Net
YoY Change
Pretax Income	$40.00M	$26.74M	$23.68M
YoY Change	110.53%	73.41%	124.42%
Income Tax	$1.200M	$1.656M	$1.634M
% Of Pretax Income	3.0%	6.19%	6.9%
Net Earnings	$36.08M	$38.61M	$22.41M
YoY Change	95.92%	122.49%	79.06%
Net Earnings / Revenue	31.74%	35.16%	23.6%
Basic Earnings Per Share	$0.33	$0.37	$0.22
Diluted Earnings Per Share	$0.33	$0.37	$0.22
COMMON SHARES
Basic Shares Outstanding	104.3M shares	104.3M shares	102.1M shares
Diluted Shares Outstanding		108.8M shares	106.7M shares

Balance Sheet

Concept	2012 Q4	2012 Q3	2012 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$30.80M	$43.60M	$185.5M
YoY Change	16.23%	28.61%	426.99%
Cash & Equivalents	$30.79M	$43.61M	$185.5M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables	$11.10M	$10.90M	$16.00M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$41.90M	$54.50M	$201.5M
YoY Change	-6.89%	-42.69%	361.1%
LONG-TERM ASSETS
Property, Plant & Equipment	$2.992B	$2.742B	$2.278B
YoY Change	32.15%	33.09%	11.38%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$106.3M	$121.3M	$125.7M
YoY Change	-18.48%	-9.61%	-8.91%
Other Assets	$17.00M	$23.40M	$37.20M
YoY Change	-34.11%	-23.03%	13.76%
Total Long-Term Assets	$3.182B	$2.958B	$2.507B
YoY Change	28.68%	29.81%	10.57%
TOTAL ASSETS
Total Short-Term Assets	$41.90M	$54.50M	$201.5M
Total Long-Term Assets	$3.182B	$2.958B	$2.507B
Total Assets	$3.223B	$3.013B	$2.708B
YoY Change	28.04%	26.9%	17.2%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$52.30M	$49.60M	$47.10M
YoY Change	12.72%	24.31%	44.04%
Accrued Expenses
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	$52.30M	$49.60M	$47.10M
YoY Change	12.72%	24.31%	44.04%
LONG-TERM LIABILITIES
Long-Term Debt	$1.578B	$1.590B	$1.312B
YoY Change	15.69%	28.01%	10.23%
Other Long-Term Liabilities	$48.20M	$43.00M	$38.60M
YoY Change	42.6%	43.33%	33.1%
Total Long-Term Liabilities	$1.626B	$1.633B	$1.351B
YoY Change	16.34%	28.37%	10.78%
TOTAL LIABILITIES
Total Short-Term Liabilities	$52.30M	$49.60M	$47.10M
Total Long-Term Liabilities	$1.626B	$1.633B	$1.351B
Total Liabilities	$1.678B	$1.683B	$1.398B
YoY Change	16.23%	23.12%	6.97%
SHAREHOLDERS EQUITY
Retained Earnings	-$235.1M	-$243.5M	-$261.3M
YoY Change	-10.99%
Common Stock	$1.741B	$1.533B	$1.528B
YoY Change	34.87%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.492B	$1.275B	$1.256B
YoY Change
Total Liabilities & Shareholders Equity	$3.223B	$3.013B	$2.708B
YoY Change	28.04%	26.9%	17.2%

Cashflow Statement

Concept	2012 Q4	2012 Q3	2012 Q2
OPERATING ACTIVITIES
Net Income	$36.08M	$38.61M	$22.41M
YoY Change	95.92%	122.49%	79.06%
Depreciation, Depletion And Amortization	$21.60M	$19.77M	$16.63M
YoY Change	35.0%	37.62%	17.98%
Cash From Operating Activities	$62.90M	$60.40M	$51.80M
YoY Change	44.6%	70.14%	47.16%
INVESTING ACTIVITIES
Capital Expenditures	-$238.5M	-$322.7M	-$28.70M
YoY Change	171.64%	1005.14%	-65.17%
Acquisitions
YoY Change
Other Investing Activities	$6.600M	$13.50M	-$20.80M
YoY Change	29.41%	-130.41%	-377.33%
Cash From Investing Activities	-$231.8M	-$309.2M	-$49.50M
YoY Change	180.29%	320.11%	-33.91%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$202.9M		$226.7M
YoY Change			101.77%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	156.2M	106.9M	145.6M
YoY Change	391.19%	190.49%	349.38%
NET CHANGE
Cash From Operating Activities	62.90M	60.40M	51.80M
Cash From Investing Activities	-231.8M	-309.2M	-49.50M
Cash From Financing Activities	156.2M	106.9M	145.6M
Net Change In Cash	-12.70M	-141.9M	147.9M
YoY Change	71.62%	10815.38%	-2126.03%
FREE CASH FLOW
Cash From Operating Activities	$62.90M	$60.40M	$51.80M
Capital Expenditures	-$238.5M	-$322.7M	-$28.70M
Free Cash Flow	$301.4M	$383.1M	$80.50M
YoY Change	129.55%	492.12%	-31.55%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2013	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	7975000	USD
CY2012	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	11607000	USD
CY2013	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-size:10.0pt;font-family:Times New Roman;"> <p style="FONT-FAMILY: times;"><font size="2"><b>Use of Estimates</b></font></p> <p style="FONT-FAMILY: times;"><font size="2">        The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</font></p> </div>
CY2013	us-gaap	Comparability Of Prior Year Financial Data ComparabilityOfPriorYearFinancialData	<div style="font-size:10.0pt;font-family:Times New Roman;"> <p style="FONT-FAMILY: times;"><font size="2"><b>Reclassifications</b></font></p> <p style="FONT-FAMILY: times;"><font size="2">        Certain amounts in the 2012 and 2011 financial statements and supporting note disclosures have been reclassified to conform to the current year presentation. Such reclassifications did not impact previously reported net income or accumulated deficit.</font></p> </div>
CY2013Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	779	property
CY2013Q4	exr	Number Of Real Estate Properties Franchisees And Others NumberOfRealEstatePropertiesFranchiseesAndOthers	250	property
CY2013Q4	exr	Number Of Real Estate Properties Owned And Or Managed NumberOfRealEstatePropertiesOwnedAndOrManaged	1029	property
CY2013Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	35	state
CY2013	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2013	exr	Maximum Percentage Of Rental Income Accounted For By Single Tenant MaximumPercentageOfRentalIncomeAccountedForBySingleTenant	0.05	pure
CY2013	exr	Number Of Acquired Property Excluded From Pro Forma Financial Information NumberOfAcquiredPropertyExcludedFromProFormaFinancialInformation	23	property
CY2012Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	2991722000	USD
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.53
CY2013Q4	exr	Variable Interest Entity Not Primary Beneficiary Number And Not Consolidated Number VariableInterestEntityNotPrimaryBeneficiaryNumberAndNotConsolidatedNumber	3	entity
CY2013	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0	USD
CY2012	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0	USD
CY2011	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	752000	USD
CY2013	exr	Number Of Leased Properties That Cannot Be Classified As Ground Or Building Leases NumberOfLeasedPropertiesThatCannotBeClassifiedAsGroundOrBuildingLeases	3	property
CY2013	exr	Number Of Properties Related To Ground Leases Assumed By The Entity At Rates Lower Than Current Market Rates NumberOfPropertiesRelatedToGroundLeasesAssumedByTheEntityAtRatesLowerThanCurrentMarketRates	5	property
CY2013	exr	Economic Risk Number Of Components EconomicRiskNumberOfComponents	3	item
CY2013Q4	exr	Credit Risk Derivative Liabilities Expected Termination Value On Settlement CreditRiskDerivativeLiabilitiesExpectedTerminationValueOnSettlement	3946000	USD
CY2011	us-gaap	Advertising Expense AdvertisingExpense	5958000	USD
CY2012	us-gaap	Advertising Expense AdvertisingExpense	6026000	USD
CY2013	us-gaap	Advertising Expense AdvertisingExpense	6482000	USD
CY2013	exr	Percentage Of Annual Reit Taxable Income Distributable To Stockholders Minimum PercentageOfAnnualREITTaxableIncomeDistributableToStockholdersMinimum	0.90	pure
CY2013	exr	Percentage Of All Distributions To Stockholders Which Classifies As Return Of Capital PercentageOfAllDistributionsToStockholdersWhichClassifiesAsReturnOfCapital	0.214	pure
CY2012	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-6876000	USD
CY2012	exr	Income Loss Attributable To Noncontrolling Interest Fixed Component IncomeLossAttributableToNoncontrollingInterestFixedComponent	5750000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	118435000	USD
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	101766385	shares
CY2012	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1011000	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	103767365	shares
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.15
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.14
CY2013Q4	exr	Tenant Reinsurance Policy Average Amount Of Insurance Coverage TenantReinsurancePolicyAverageAmountOfInsuranceCoverage	2200000	USD
CY2011	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-6289000	USD
CY2011	exr	Income Loss Attributable To Noncontrolling Interest Fixed Component IncomeLossAttributableToNoncontrollingInterestFixedComponent	5750000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	50988000	USD
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	91301265	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1342328	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	93633573	shares
CY2013Q4	exr	Tenant Reinsurance Policy Maximum Amount Of Insurance Coverage TenantReinsurancePolicyMaximumAmountOfInsuranceCoverage	10000000	USD
CY2013	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-7255000	USD
CY2013	exr	Income Loss Attributable To Noncontrolling Interest Fixed Component IncomeLossAttributableToNoncontrollingInterestFixedComponent	5750000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	173581000	USD
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	111349361	shares
CY2013	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	765753	shares
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	113105094	shares
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.54
CY2013	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	558484000	USD
CY2012Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	3379512000	USD
CY2013Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	4126648000	USD
CY2012Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	391928000	USD
CY2012Q4	exr	Net Operating Real Estate Assets NetOperatingRealEstateAssets	2987584000	USD
CY2012Q4	us-gaap	Development In Process DevelopmentInProcess	4138000	USD
CY2012Q4	us-gaap	Real Estate Heldforsale RealEstateHeldforsale	8600000	USD
CY2013Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	496754000	USD
CY2013Q4	exr	Net Operating Real Estate Assets NetOperatingRealEstateAssets	3629894000	USD
CY2013Q4	us-gaap	Development In Process DevelopmentInProcess	6650000	USD
CY2013Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	3636544000	USD
CY2013Q4	us-gaap	Real Estate Heldforsale RealEstateHeldforsale	5625000	USD
CY2013	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P18M
CY2011	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2633000	USD
CY2012	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	7177000	USD
CY2013	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	12065000	USD
CY2012	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	91	property
CY2013	exr	Number Of Real Estate Properties Acquired NumberOfRealEstatePropertiesAcquired	78	property
CY2013Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Purchase Price BusinessAcquisitionCostOfAcquiredEntityPurchasePrice	704449000	USD
CY2013Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Cash Paid BusinessAcquisitionCostOfAcquiredEntityCashPaid	413778000	USD
CY2013	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	110803000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	74453000	USD
CY2013Q4	exr	Real Estate Property Acquisition Notes Receivable Eliminated Due To Acquisition Of Joint Venture Partner Interest RealEstatePropertyAcquisitionNotesReceivableEliminatedDueToAcquisitionOfJointVenturePartnerInterest	2251000	USD
CY2013	exr	Real Estate Property Acquisition Previous Equity Interest RealEstatePropertyAcquisitionPreviousEquityInterest	14867000	USD
CY2013Q4	exr	Real Estate Property Acquisition Assets Acquired Liabilities Assumed Net RealEstatePropertyAcquisitionAssetsAcquiredLiabilitiesAssumedNet	2498000	USD
CY2013Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Equity Interests Issued And Issuable BusinessAcquisitionCostOfAcquiredEntityEquityInterestsIssuedAndIssuable	119216000	USD
CY2013	us-gaap	Business Acquisition Equity Interests Issued Or Issuable Number Of Shares Issued BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued	3342691	shares
CY2013Q4	exr	Real Estate Property Acquisition Purchase Price Allocation Land RealEstatePropertyAcquisitionPurchasePriceAllocationLand	255422000	USD
CY2013Q4	exr	Real Estate Property Acquisition Purchase Price Allocation Building RealEstatePropertyAcquisitionPurchasePriceAllocationBuilding	431768000	USD
CY2013Q4	us-gaap	Business Acquisition Purchase Price Allocation Amortizable Intangible Assets BusinessAcquisitionPurchasePriceAllocationAmortizableIntangibleAssets	11800000	USD
CY2013	exr	Real Estate Property Acquisition Closing Costs Expensed RealEstatePropertyAcquisitionClosingCostsExpensed	5461000	USD
CY2012Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Purchase Price BusinessAcquisitionCostOfAcquiredEntityPurchasePrice	761648000	USD
CY2012Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Cash Paid BusinessAcquisitionCostOfAcquiredEntityCashPaid	563107000	USD
CY2012	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	150284000	USD
CY2012Q4	exr	Real Estate Property Acquisition Notes Receivable Eliminated Due To Acquisition Of Joint Venture Partner Interest RealEstatePropertyAcquisitionNotesReceivableEliminatedDueToAcquisitionOfJointVenturePartnerInterest	8584000	USD
CY2012	exr	Real Estate Property Acquisition Previous Equity Interest RealEstatePropertyAcquisitionPreviousEquityInterest	17539000	USD
CY2012Q4	exr	Real Estate Property Acquisition Assets Acquired Liabilities Assumed Net RealEstatePropertyAcquisitionAssetsAcquiredLiabilitiesAssumedNet	1965000	USD
CY2012Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Equity Interests Issued And Issuable BusinessAcquisitionCostOfAcquiredEntityEquityInterestsIssuedAndIssuable	429000	USD
CY2012	us-gaap	Business Acquisition Equity Interests Issued Or Issuable Number Of Shares Issued BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued	16007	shares
CY2012Q4	exr	Real Estate Property Acquisition Purchase Price Allocation Land RealEstatePropertyAcquisitionPurchasePriceAllocationLand	168259000	USD
CY2012	exr	Real Estate Property Acquisition Closing Costs Expensed RealEstatePropertyAcquisitionClosingCostsExpensed	3319000	USD
CY2012Q4	exr	Real Estate Property Acquisition Purchase Price Allocation Building RealEstatePropertyAcquisitionPurchasePriceAllocationBuilding	573500000	USD
CY2012Q4	us-gaap	Business Acquisition Purchase Price Allocation Amortizable Intangible Assets BusinessAcquisitionPurchasePriceAllocationAmortizableIntangibleAssets	16570000	USD
CY2013Q2	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	950000	USD
CY2013Q2	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	0	USD
CY2013Q3	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	9153000	USD
CY2013Q2	us-gaap	Gain Loss On Condemnation GainLossOnCondemnation	800000	USD
CY2013Q2	exr	Number Of Self Storage Properties Which Portion Of Land Condemned NumberOfSelfStoragePropertiesWhichPortionOfLandCondemned	1	property
CY2012Q4	us-gaap	Real Estate Investments Unconsolidated Real Estate And Other Joint Ventures RealEstateInvestmentsUnconsolidatedRealEstateAndOtherJointVentures	106313000	USD
CY2013Q4	us-gaap	Real Estate Investments Unconsolidated Real Estate And Other Joint Ventures RealEstateInvestmentsUnconsolidatedRealEstateAndOtherJointVentures	88125000	USD
CY2012Q4	exr	Percentage Of Joint Venture Owned Prior To Dissolution And Final Distribution PercentageOfJointVentureOwnedPriorToDissolutionAndFinalDistribution	0.20	pure
CY2012Q4	exr	Number Of Joint Ventures Dissolved NumberOfJointVenturesDissolved	2	item
CY2012Q1	exr	Gain Recognized From Dissolution Of Joint Venture And Final Distribution GainRecognizedFromDissolutionOfJointVentureAndFinalDistribution	5550000	USD
CY2012Q4	exr	Gain Recognized From Dissolution Of Joint Venture And Final Distribution GainRecognizedFromDissolutionOfJointVentureAndFinalDistribution	1409000	USD
CY2012Q1	exr	Percentage Of Joint Venture Owned Prior To Dissolution And Final Distribution PercentageOfJointVentureOwnedPriorToDissolutionAndFinalDistribution	0.40	pure
CY2013Q4	us-gaap	Interest Rate Cash Flow Hedge Asset At Fair Value InterestRateCashFlowHedgeAssetAtFairValue	13630000	USD
CY2013	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	11653000	USD
CY2012	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	10859000	USD
CY2011	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	7287000	USD
CY2013	exr	Equity Method Investment Income Loss Excess Purchase Price Amortization Amount EquityMethodInvestmentIncomeLossExcessPurchasePriceAmortizationAmount	25713000	USD
CY2013	exr	Equity Method Investment Excess Purchase Price Amortization Period EquityMethodInvestmentExcessPurchasePriceAmortizationPeriod	P40Y
CY2012Q4	exr	Equity Method Investment Summarized Financial Information Real Estate Investment Property Net EquityMethodInvestmentSummarizedFinancialInformationRealEstateInvestmentPropertyNet	1633402000	USD
CY2012Q4	exr	Equity Method Investment Summarized Financial Information Other Assets EquityMethodInvestmentSummarizedFinancialInformationOtherAssets	33103000	USD
CY2012Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	1666505000	USD
CY2012Q4	exr	Equity Method Investment Summarized Financial Information Secured Debt EquityMethodInvestmentSummarizedFinancialInformationSecuredDebt	404630000	USD
CY2012Q4	exr	Equity Method Investment Summarized Financial Information Other Liabilities EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities	27383000	USD
CY2012Q4	us-gaap	Equity Method Investment Summarized Financial Information Equity EquityMethodInvestmentSummarizedFinancialInformationEquity	1234492000	USD
CY2012Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities And Equity EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity	1666505000	USD
CY2012	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	266222000	USD
CY2011	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	304499000	USD
CY2012	us-gaap	Equity Method Investment Summarized Financial Information Cost Of Sales EquityMethodInvestmentSummarizedFinancialInformationCostOfSales	164285000	USD
CY2013Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities And Equity EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity	1508542000	USD
CY2013Q4	us-gaap	Equity Method Investment Summarized Financial Information Equity EquityMethodInvestmentSummarizedFinancialInformationEquity	1182381000	USD
CY2011	us-gaap	Equity Method Investment Summarized Financial Information Cost Of Sales EquityMethodInvestmentSummarizedFinancialInformationCostOfSales	217114000	USD
CY2012	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	101937000	USD
CY2011	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	87385000	USD
CY2013Q4	exr	Equity Method Investment Summarized Financial Information Secured Debt EquityMethodInvestmentSummarizedFinancialInformationSecuredDebt	304121000	USD
CY2013Q4	exr	Equity Method Investment Summarized Financial Information Other Liabilities EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities	22040000	USD
CY2013	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	260487000	USD
CY2013	us-gaap	Equity Method Investment Summarized Financial Information Cost Of Sales EquityMethodInvestmentSummarizedFinancialInformationCostOfSales	149595000	USD
CY2013	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	110892000	USD
CY2013Q4	exr	Equity Method Investment Summarized Financial Information Real Estate Investment Property Net EquityMethodInvestmentSummarizedFinancialInformationRealEstateInvestmentPropertyNet	1474754000	USD
CY2013Q4	exr	Equity Method Investment Summarized Financial Information Other Assets EquityMethodInvestmentSummarizedFinancialInformationOtherAssets	33788000	USD
CY2013Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	1508542000	USD
CY2013Q4	us-gaap	Fixtures And Equipment Gross FixturesAndEquipmentGross	21774000	USD
CY2013Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	12805000	USD
CY2013Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	6460000	USD
CY2013Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	21881000	USD
CY2013Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	8355000	USD
CY2013Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	32025000	USD
CY2013Q4	exr	Investments In Trusts InvestmentsInTrusts	3590000	USD
CY2013Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	1845000	USD
CY2012Q4	us-gaap	Fixtures And Equipment Gross FixturesAndEquipmentGross	15090000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	10223000	USD
CY2012Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	3434000	USD
CY2012Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	19783000	USD
CY2012Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	7934000	USD
CY2012Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	19881000	USD
CY2012Q4	exr	Investments In Trusts InvestmentsInTrusts	3590000	USD
CY2012Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	3609000	USD
CY2013Q4	us-gaap	Other Assets OtherAssets	96755000	USD
CY2012Q4	us-gaap	Other Assets OtherAssets	66603000	USD
CY2013Q4	us-gaap	Credit Risk Derivative Liabilities At Fair Value CreditRiskDerivativeLiabilitiesAtFairValue	3684000	USD
CY2013Q4	us-gaap	Derivative Number Of Instruments Held DerivativeNumberOfInstrumentsHeld	22	item
CY2013Q4	us-gaap	Derivative Lower Fixed Interest Rate Range DerivativeLowerFixedInterestRateRange	0.0279	pure
CY2013Q4	us-gaap	Derivative Higher Fixed Interest Rate Range DerivativeHigherFixedInterestRateRange	0.0632	pure
CY2013Q4	us-gaap	Interest Rate Cash Flow Hedge Liability At Fair Value InterestRateCashFlowHedgeLiabilityAtFairValue	3684000	USD
CY2012Q4	us-gaap	Interest Rate Cash Flow Hedge Liability At Fair Value InterestRateCashFlowHedgeLiabilityAtFairValue	15228000	USD
CY2013	exr	Interest Rate Cash Flow Hedge Increase Decrease In Interest Expenses Due To Interest Payments InterestRateCashFlowHedgeIncreaseDecreaseInInterestExpensesDueToInterestPayments	8917000	USD
CY2012	exr	Interest Rate Cash Flow Hedge Increase Decrease In Interest Expenses Due To Interest Payments InterestRateCashFlowHedgeIncreaseDecreaseInInterestExpensesDueToInterestPayments	6758000	USD
CY2011	exr	Interest Rate Cash Flow Hedge Increase Decrease In Interest Expenses Due To Interest Payments InterestRateCashFlowHedgeIncreaseDecreaseInInterestExpensesDueToInterestPayments	3771000	USD
CY2013	us-gaap	Unrealized Gain Loss On Interest Rate Cash Flow Hedges Pretax Accumulated Other Comprehensive Income Loss UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss	13718000	USD
CY2013	us-gaap	Interest Rate Cash Flow Hedge Gain Loss Reclassified To Earnings Net InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet	-8917000	USD
CY2013Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	280000000	USD
CY2012Q4	us-gaap	Deferred Revenue Leases Net DeferredRevenueLeasesNet	20752000	USD
CY2012Q4	exr	Lease Obligation Liability LeaseObligationLiability	3826000	USD
CY2012Q4	us-gaap	Interest Rate Derivative Liabilities At Fair Value InterestRateDerivativeLiabilitiesAtFairValue	15228000	USD
CY2012Q4	us-gaap	Other Sundry Liabilities OtherSundryLiabilities	7028000	USD
CY2012Q4	us-gaap	Other Liabilities OtherLiabilities	48248000	USD
CY2013Q4	us-gaap	Deferred Revenue Leases Net DeferredRevenueLeasesNet	24037000	USD
CY2013Q4	exr	Lease Obligation Liability LeaseObligationLiability	2076000	USD
CY2013Q4	us-gaap	Interest Rate Derivative Liabilities At Fair Value InterestRateDerivativeLiabilitiesAtFairValue	3684000	USD
CY2013Q4	us-gaap	Other Sundry Liabilities OtherSundryLiabilities	4048000	USD
CY2013Q4	us-gaap	Other Liabilities OtherLiabilities	37997000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals	2352000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals	3826000	USD
CY2013Q4	us-gaap	Accrued Income Taxes AccruedIncomeTaxes	671000	USD
CY2013	us-gaap	Property Management Fee Percent Fee PropertyManagementFeePercentFee	0.06	pure
CY2012	us-gaap	Management Fees Revenue ManagementFeesRevenue	25706000	USD
CY2011	us-gaap	Management Fees Revenue ManagementFeesRevenue	29924000	USD
CY2011Q4	exr	Asset Management Fees Receivable AssetManagementFeesReceivable	5327000	USD
CY2013Q4	us-gaap	Due From Related Parties DueFromRelatedParties	7542000	USD
CY2012Q4	us-gaap	Due From Related Parties DueFromRelatedParties	11078000	USD
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2013Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2013Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	115755527	shares
CY2013Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	115755527	shares
CY2013	exr	Common Stock Voting Rights Votes Number CommonStockVotingRightsVotesNumber	1	item
CY2012Q4	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	5980000	shares
CY2012Q4	exr	Common Stock Offer Price Per Share CommonStockOfferPricePerShare	33.98
CY2012Q4	exr	Gross Proceeds From Issuance Of Common Stock GrossProceedsFromIssuanceOfCommonStock	203200000	USD
CY2012Q4	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	300000	USD
CY2012Q4	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	202900000	USD
CY2012Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	8050000	shares
CY2012Q2	exr	Common Stock Offer Price Per Share CommonStockOfferPricePerShare	28.22
CY2012Q2	exr	Gross Proceeds From Issuance Of Common Stock GrossProceedsFromIssuanceOfCommonStock	227171000	USD
CY2012Q2	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	483000	USD
CY2012Q2	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	226688000	USD
CY2011Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	5335423	shares
CY2011Q2	exr	Common Stock Offer Price Per Share CommonStockOfferPricePerShare	21.16
CY2011Q2	exr	Gross Proceeds From Issuance Of Common Stock GrossProceedsFromIssuanceOfCommonStock	112898000	USD
CY2011Q2	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	549000	USD
CY2011Q2	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	112349000	USD
CY2013	exr	Average Closing Market Price Measurement Period AverageClosingMarketPriceMeasurementPeriod	P10D
CY2013	exr	Basis Of Exchange Operating Partnership Units For Common Stock BasisOfExchangeOperatingPartnershipUnitsForCommonStock	one-for-one basis
CY2013Q4	exr	Common Stock Average Closing Market Price CommonStockAverageClosingMarketPrice	42.05
CY2013Q4	exr	Operating Partnership Units Redemption Amount OperatingPartnershipUnitsRedemptionAmount	182250000	USD
CY2013Q1	exr	Number Of Joint Venture Partners In Consolidated Self Storage Property Ownership Interest Acquired NumberOfJointVenturePartnersInConsolidatedSelfStoragePropertyOwnershipInterestAcquired	1	property
CY2013Q2	exr	Number Of Joint Venture Partners In Consolidated Self Storage Property Ownership Interest Acquired NumberOfJointVenturePartnersInConsolidatedSelfStoragePropertyOwnershipInterestAcquired	1	property
CY2013Q1	exr	Increase In Minority Interest Ownership Percentage By Parent In Joint Venture Partner In Consolidated Self Storage Property IncreaseInMinorityInterestOwnershipPercentageByParentInJointVenturePartnerInConsolidatedSelfStorageProperty	0.017	pure
CY2013Q2	exr	Increase In Minority Interest Ownership Percentage By Parent In Joint Venture Partner In Consolidated Self Storage Property IncreaseInMinorityInterestOwnershipPercentageByParentInJointVenturePartnerInConsolidatedSelfStorageProperty	0.276	pure
CY2013Q1	exr	Increase In Profit Interest Percentage By Parent In Joint Venture Partner In Consolidated Self Storage Property IncreaseInProfitInterestPercentageByParentInJointVenturePartnerInConsolidatedSelfStorageProperty	0.17	pure
CY2013Q2	exr	Increase In Profit Interest Percentage By Parent In Joint Venture Partner In Consolidated Self Storage Property IncreaseInProfitInterestPercentageByParentInJointVenturePartnerInConsolidatedSelfStorageProperty	0.35	pure
CY2013Q1	exr	Payments To Acquire Interest In Joint Venture Partner In Consolidated Self Storage Property PaymentsToAcquireInterestInJointVenturePartnerInConsolidatedSelfStorageProperty	200000	USD
CY2013Q2	exr	Payments To Acquire Interest In Joint Venture Partner In Consolidated Self Storage Property PaymentsToAcquireInterestInJointVenturePartnerInConsolidatedSelfStorageProperty	950000	USD
CY2013Q1	exr	Minority Interest Ownership Percentage By Parent In Joint Venture Partner In Consolidated Self Storage Property Prior To Acquisition MinorityInterestOwnershipPercentageByParentInJointVenturePartnerInConsolidatedSelfStoragePropertyPriorToAcquisition	0.95	pure
CY2013Q1	exr	Minority Interest Ownership Percentage By Parent In Joint Venture Partner In Consolidated Self Storage Property MinorityInterestOwnershipPercentageByParentInJointVenturePartnerInConsolidatedSelfStorageProperty	0.967	pure
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	2390415	shares
CY2013	us-gaap	Common Stock Voting Rights CommonStockVotingRights	All holders of the Company's common stock are entitled to receive dividends and to one vote on all matters submitted to a vote of stockholders.
CY2013Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	3481000	USD
CY2013Q4	exr	Maximum Percentage Of Annual Salary Which Plan Participants May Contribute To The Plan MaximumPercentageOfAnnualSalaryWhichPlanParticipantsMayContributeToThePlan	0.15	pure
CY2012	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	894000	USD
CY2011	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	832000	USD
CY2013	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1013000	USD
CY2013	exr	Percentage Of Matching Contribution Made By Company For First Three Percent Of Participants Compensation PercentageOfMatchingContributionMadeByCompanyForFirstThreePercentOfParticipantsCompensation	1.00	pure
CY2013	exr	Maximum Percentage Of Compensation By Plan Participants Subject To Hundred Percent Matching Of Company MaximumPercentageOfCompensationByPlanParticipantsSubjectToHundredPercentMatchingOfCompany	0.03	pure
CY2013	exr	Maximum Percentage Of Matching Contribution Made By Company For Next Two Percent Of Participants Compensation MaximumPercentageOfMatchingContributionMadeByCompanyForNextTwoPercentOfParticipantsCompensation	0.50	pure
CY2013	exr	Maximum Percentage Of Compensation By Plan Participants Subject To Fifty Percent Matching Of Company MaximumPercentageOfCompensationByPlanParticipantsSubjectToFiftyPercentMatchingOfCompany	0.02	pure
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	612000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9984000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	8240000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	9572000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	615000	USD
CY2013	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	10187000	USD
CY2013	exr	Income Tax Credits And Adjustments Federal IncomeTaxCreditsAndAdjustmentsFederal	-4556000	USD
CY2013	us-gaap	Income Tax Credits And Adjustments IncomeTaxCreditsAndAdjustments	-4556000	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	4353000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	4353000	USD
CY2013	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	9369000	USD
CY2013	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	615000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	8852000	USD
CY2012	exr	Income Tax Credits And Adjustments Federal IncomeTaxCreditsAndAdjustmentsFederal	-5528000	USD
CY2012	us-gaap	Income Tax Credits And Adjustments IncomeTaxCreditsAndAdjustments	-5528000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2089000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2089000	USD
CY2012	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	4801000	USD
CY2012	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	612000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5413000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1350000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	606000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1956000	USD
CY2011	exr	Income Tax Credits And Adjustments Federal IncomeTaxCreditsAndAdjustmentsFederal	-6849000	USD
CY2011	us-gaap	Income Tax Credits And Adjustments IncomeTaxCreditsAndAdjustments	-6849000	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	6048000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	6048000	USD
CY2011	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	549000	USD
CY2011	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	606000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1155000	USD
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	67012000	USD
CY2013	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	53519000	USD
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	615000	USD
CY2013	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	435000	USD
CY2013	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	4562000	USD
CY2013	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	3000	USD
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	pure
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.279	pure
CY2013	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.003	pure
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.002	pure
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	213483000	USD
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.024	pure
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.000	pure
CY2013	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.052	pure
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	46586000	USD
CY2012	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	1641000	USD
CY2012	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	37729000	USD
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	612000	USD
CY2012	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	5528000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-169000	USD
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.283	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.005	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.012	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.042	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.001	pure
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.041	pure
CY2013Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	16309000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4570000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	17931000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4135000	USD
CY2012Q4	us-gaap	Assets Assets	3223477000	USD
CY2011	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	329830000	USD
CY2012	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	409396000	USD
CY2013	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	520613000	USD
CY2011	us-gaap	Costs And Expenses CostsAndExpenses	214354000	USD
CY2012	us-gaap	Costs And Expenses CostsAndExpenses	252155000	USD
CY2013	us-gaap	Costs And Expenses CostsAndExpenses	307130000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	115476000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	157241000	USD
CY2011	us-gaap	Interest And Debt Expense InterestAndDebtExpense	67301000	USD
CY2012	us-gaap	Interest And Debt Expense InterestAndDebtExpense	71850000	USD
CY2013	us-gaap	Interest And Debt Expense InterestAndDebtExpense	71630000	USD
CY2011	us-gaap	Investment Income Interest InvestmentIncomeInterest	1027000	USD
CY2012	us-gaap	Investment Income Interest InvestmentIncomeInterest	1816000	USD
CY2013	us-gaap	Investment Income Interest InvestmentIncomeInterest	749000	USD
CY2011	us-gaap	Profit Loss ProfitLoss	58423000	USD
CY2012	us-gaap	Profit Loss ProfitLoss	127689000	USD
CY2013	us-gaap	Profit Loss ProfitLoss	185556000	USD
CY2013	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	5997000	USD
CY2012	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	5889000	USD
CY2011	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	5583000	USD
CY2013Q4	exr	Real Estate Self Storage Properties Ground Leases Number RealEstateSelfStoragePropertiesGroundLeasesNumber	18	facility
CY2013	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	260000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	7806000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	5690000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	4565000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	3274000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	2660000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	45862000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	69857000	USD
CY2011	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	2799000	USD
CY2012	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	2830000	USD
CY2013	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	2983000	USD
CY2012Q1	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	90987000	USD
CY2012Q2	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	94951000	USD
CY2012Q2	us-gaap	Costs And Expenses CostsAndExpenses	57076000	USD
CY2012Q4	us-gaap	Profit Loss ProfitLoss	38873000	USD
CY2012Q3	us-gaap	Costs And Expenses CostsAndExpenses	66307000	USD
CY2012Q4	us-gaap	Costs And Expenses CostsAndExpenses	70555000	USD
CY2012Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	32770000	USD
CY2012Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	37875000	USD
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	43484000	USD
CY2012Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	43112000	USD
CY2012Q1	us-gaap	Profit Loss ProfitLoss	22518000	USD
CY2013Q1	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	119322000	USD
CY2013Q1	us-gaap	Costs And Expenses CostsAndExpenses	72593000	USD
CY2012Q3	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	109791000	USD
CY2012Q4	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	113667000	USD
CY2012Q1	us-gaap	Costs And Expenses CostsAndExpenses	58217000	USD
CY2013Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	46729000	USD
CY2012Q2	us-gaap	Profit Loss ProfitLoss	24745000	USD
CY2012Q3	us-gaap	Profit Loss ProfitLoss	41553000	USD
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.21
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.37
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.21
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.22
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.37
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2013Q1	us-gaap	Profit Loss ProfitLoss	33931000	USD
CY2013Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
CY2013Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.28
CY2013Q2	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	126246000	USD
CY2013Q2	us-gaap	Costs And Expenses CostsAndExpenses	72871000	USD
CY2013Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	53375000	USD
CY2013Q2	us-gaap	Profit Loss ProfitLoss	37101000	USD
CY2013Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.31
CY2013Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.31
CY2013Q3	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	133111000	USD
CY2013Q3	us-gaap	Costs And Expenses CostsAndExpenses	77047000	USD
CY2013Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	56064000	USD
CY2013Q3	us-gaap	Profit Loss ProfitLoss	32352000	USD
CY2013Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.26
CY2013Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26
CY2013Q4	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	141934000	USD
CY2013Q4	us-gaap	Costs And Expenses CostsAndExpenses	84619000	USD
CY2013Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	57315000	USD
CY2013Q4	us-gaap	Profit Loss ProfitLoss	82172000	USD
CY2013Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.68
CY2013Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.67
CY2013Q4	exr	Number Of Properties Owned By Joint Venture NumberOfPropertiesOwnedByJointVenture	19	property
CY2013Q4	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	3250000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	1758470000	USD
CY2013Q4	us-gaap	Liabilities Liabilities	2045245000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2013	us-gaap	Management Fees Revenue ManagementFeesRevenue	26614000	USD
CY2013	dei	Entity Registrant Name EntityRegistrantName	Extra Space Storage Inc.
CY2013	dei	Entity Central Index Key EntityCentralIndexKey	0001289490
CY2013	dei	Document Type DocumentType	10-K
CY2013	dei	Document Period End Date DocumentPeriodEndDate	2013-12-31
CY2013	dei	Amendment Flag AmendmentFlag	false
CY2013	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2013	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2013	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2013	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2013	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2013Q2	dei	Entity Public Float EntityPublicFloat	4421398748	USD
CY2014Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	115802553	shares
CY2013	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2013
CY2013	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2013Q4	us-gaap	Assets Assets	3977140000	USD
CY2013Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1931895000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3977140000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	30785000	USD
CY2012Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	16976000	USD
CY2012Q4	us-gaap	Secured Debt SecuredDebt	1369690000	USD
CY2012Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	-3319000	USD
CY2013Q4	us-gaap	Convertible Debt ConvertibleDebt	250000000	USD
CY2012Q4	us-gaap	Other Notes Payable OtherNotesPayable	119590000	USD
CY2013Q4	us-gaap	Other Notes Payable OtherNotesPayable	119590000	USD
CY2012Q4	us-gaap	Line Of Credit LineOfCredit	85000000	USD
CY2012Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	52299000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	1678146000	USD
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	1157000	USD
CY2013Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1973159000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	10156000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-226002000	USD
CY2013Q4	us-gaap	Minority Interest In Preferred Unit Holders MinorityInterestInPreferredUnitHolders	80947000	USD
CY2013Q4	us-gaap	Minority Interest In Operating Partnerships MinorityInterestInOperatingPartnerships	91453000	USD
CY2013Q4	us-gaap	Other Minority Interests OtherMinorityInterests	1025000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	1107000	USD
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1740037000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-14273000	USD
CY2013Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	21451000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-235064000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	1491807000	USD
CY2012Q4	us-gaap	Minority Interest In Preferred Unit Holders MinorityInterestInPreferredUnitHolders	29918000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3223477000	USD
CY2012Q4	us-gaap	Minority Interest In Operating Partnerships MinorityInterestInOperatingPartnerships	22492000	USD
CY2012Q4	us-gaap	Other Minority Interests OtherMinorityInterests	1114000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1545331000	USD
CY2012Q4	us-gaap	Preferred Stock Value PreferredStockValue		USD
CY2013Q4	us-gaap	Preferred Stock Value PreferredStockValue		USD
CY2012Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2012Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2012Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2012Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2013Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2013Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	110737205	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	110737205	shares
CY2012Q4	us-gaap	Due From Related Parties Noncurrent DueFromRelatedPartiesNoncurrent	100000000	USD
CY2013Q4	us-gaap	Due From Related Parties Noncurrent DueFromRelatedPartiesNoncurrent	100000000	USD
CY2012	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	346874000	USD
CY2011	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	268725000	USD
CY2012	us-gaap	Reinsurance Premiums For Insurance Companies By Product Segment Gross Amount ReinsurancePremiumsForInsuranceCompaniesByProductSegmentGrossAmount	36816000	USD
CY2011	us-gaap	Reinsurance Premiums For Insurance Companies By Product Segment Gross Amount ReinsurancePremiumsForInsuranceCompaniesByProductSegmentGrossAmount	31181000	USD
CY2012	us-gaap	Cost Of Revenue CostOfRevenue	114028000	USD
CY2011	us-gaap	Cost Of Revenue CostOfRevenue	95481000	USD
CY2012	exr	Tenant Reinsurance Expense TenantReinsuranceExpense	7869000	USD
CY2011	exr	Tenant Reinsurance Expense TenantReinsuranceExpense	6143000	USD
CY2012	exr	Acquisition Related Costs AcquisitionRelatedCosts	5351000	USD
CY2011	exr	Acquisition Related Costs AcquisitionRelatedCosts	2896000	USD
CY2011	us-gaap	Severance Costs SeveranceCosts	2137000	USD
CY2012	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	50454000	USD
CY2011	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	49683000	USD
CY2012	us-gaap	Interest Expense InterestExpense	71850000	USD
CY2011	us-gaap	Interest Expense InterestExpense	67301000	USD
CY2012	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	444000	USD
CY2011	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	1761000	USD
CY2012	exr	Interest Income On Note Receivable From Preferred Partnership Unit Holders InterestIncomeOnNoteReceivableFromPreferredPartnershipUnitHolders	4850000	USD
CY2011	exr	Interest Income On Note Receivable From Preferred Partnership Unit Holders InterestIncomeOnNoteReceivableFromPreferredPartnershipUnitHolders	4850000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	91613000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	52291000	USD
CY2012	exr	Gain Loss On Sale Of Real Estate Assets And Purchase Of Partners Interests GainLossOnSaleOfRealEstateAssetsAndPurchaseOfPartnersInterests	30630000	USD
CY2012	us-gaap	Minority Interest In Net Income Loss Preferred Unit Holders MinorityInterestInNetIncomeLossPreferredUnitHolders	6876000	USD
CY2011	us-gaap	Minority Interest In Net Income Loss Preferred Unit Holders MinorityInterestInNetIncomeLossPreferredUnitHolders	6289000	USD
CY2012	exr	Minority Interest In Net Income Loss Operating Partnerships And Other MinorityInterestInNetIncomeLossOperatingPartnershipsAndOther	3504000	USD
CY2011	exr	Minority Interest In Net Income Loss Operating Partnerships And Other MinorityInterestInNetIncomeLossOperatingPartnershipsAndOther	1685000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	137855000	USD
CY2013	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	960000	USD
CY2013	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	-1194000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-2237000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	56186000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	7886000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	48300000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-6587000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	121102000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	110972000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	10130000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	5757000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	25335000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	210891000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	14386000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	196505000	USD
CY2012	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	-1270000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	4819000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	4356000	USD
CY2013	exr	Gain Loss On Purchase Of Joint Venture Partners Interest GainLossOnPurchaseOfJointVenturePartnersInterest	46032000	USD
CY2012	exr	Gain Loss On Purchase Of Joint Venture Partners Interest GainLossOnPurchaseOfJointVenturePartnersInterest	23670000	USD
CY2013	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-4838000	USD
CY2012	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-2581000	USD
CY2011	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-7008000	USD
CY2013	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-9153000	USD
CY2013	us-gaap	Increase Decrease In Due From Related Parties Current IncreaseDecreaseInDueFromRelatedPartiesCurrent	-1277000	USD
CY2012	us-gaap	Increase Decrease In Due From Related Parties Current IncreaseDecreaseInDueFromRelatedPartiesCurrent	-7439000	USD
CY2011	us-gaap	Increase Decrease In Due From Related Parties Current IncreaseDecreaseInDueFromRelatedPartiesCurrent	8634000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-8725000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-8746000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-7533000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	8302000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	7220000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	9837000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-5858000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	2002000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-1118000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	271259000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	215879000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	144164000	USD
CY2013	us-gaap	Payments To Acquire And Develop Real Estate PaymentsToAcquireAndDevelopRealEstate	356425000	USD
CY2012	us-gaap	Payments To Acquire And Develop Real Estate PaymentsToAcquireAndDevelopRealEstate	605486000	USD
CY2011	us-gaap	Payments To Acquire And Develop Real Estate PaymentsToAcquireAndDevelopRealEstate	202019000	USD
CY2013	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	1516000	USD
CY2012	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	1423000	USD
CY2011	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	4088000	USD
CY2013	exr	Redemption Of Operating Partnership Units For Common Stock Including Additional Paid In Capital RedemptionOfOperatingPartnershipUnitsForCommonStockIncludingAdditionalPaidInCapital	260000	USD
CY2012	exr	Return Of Investment Real Estate Ventures ReturnOfInvestmentRealEstateVentures	2421000	USD
CY2011	exr	Return Of Investment Real Estate Ventures ReturnOfInvestmentRealEstateVentures	4614000	USD
CY2013	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	4475000	USD
CY2012	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-8792000	USD
CY2011	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-4730000	USD
CY2013	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	5000000	USD
CY2012	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	7875000	USD
CY2011	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	50140000	USD
CY2013	us-gaap	Payments To Acquire Furniture And Fixtures PaymentsToAcquireFurnitureAndFixtures	6524000	USD
CY2012	us-gaap	Payments To Acquire Furniture And Fixtures PaymentsToAcquireFurnitureAndFixtures	3367000	USD
CY2011	us-gaap	Payments To Acquire Furniture And Fixtures PaymentsToAcquireFurnitureAndFixtures	5016000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-366976000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-606938000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-251919000	USD
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	205988000	USD
CY2012	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	132744000	USD
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	429588000	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	112349000	USD
CY2013	exr	Proceeds From Notes Payable And Lines Of Credit ProceedsFromNotesPayableAndLinesOfCredit	582185000	USD
CY2012	exr	Proceeds From Notes Payable And Lines Of Credit ProceedsFromNotesPayableAndLinesOfCredit	1074263000	USD
CY2011	exr	Proceeds From Notes Payable And Lines Of Credit ProceedsFromNotesPayableAndLinesOfCredit	475487000	USD
CY2012Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Liabilities Incurred BusinessAcquisitionCostOfAcquiredEntityLiabilitiesIncurred	8584000	USD
CY2011Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Liabilities Incurred BusinessAcquisitionCostOfAcquiredEntityLiabilitiesIncurred	4850000	USD
CY2011	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	6197000	USD
CY2012	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	87663000	USD
CY2013	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	41000	USD
CY2012	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	155000	USD
CY2011	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	271000	USD
CY2013	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5896000	USD
CY2012	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	10267000	USD
CY2011	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	18622000	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	163014000	USD
CY2012	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	88287000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	52027000	USD
CY2013	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	13262000	USD
CY2012	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	9215000	USD
CY2011	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	8127000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	191655000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	395360000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	87489000	USD
CY2013	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	246250000	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	65511000	USD
CY2013	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	95938000	USD
CY2012	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	4301000	USD
CY2011	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-20266000	USD
CY2012	exr	Partner Capital Account Units Issued PartnerCapitalAccountUnitsIssued	429000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	65687000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	61726000	USD
CY2013	us-gaap	Income Taxes Paid IncomeTaxesPaid	1916000	USD
CY2012	us-gaap	Income Taxes Paid IncomeTaxesPaid	831000	USD
CY2011	us-gaap	Income Taxes Paid IncomeTaxesPaid	665000	USD
CY2013	us-gaap	Proceeds And Excess Tax Benefit From Sharebased Compensation ProceedsAndExcessTaxBenefitFromSharebasedCompensation	3193000	USD
CY2012	us-gaap	Proceeds And Excess Tax Benefit From Sharebased Compensation ProceedsAndExcessTaxBenefitFromSharebasedCompensation	3476000	USD
CY2011	us-gaap	Proceeds And Excess Tax Benefit From Sharebased Compensation ProceedsAndExcessTaxBenefitFromSharebasedCompensation	2199000	USD
CY2013	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	3193000	USD
CY2012	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	3476000	USD
CY2011	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	2199000	USD
CY2012	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	2479000	USD
CY2011	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	2344000	USD
CY2012	exr	Redemption Of Operating Partnership Units For Common Stock Including Additional Paid In Capital RedemptionOfOperatingPartnershipUnitsForCommonStockIncludingAdditionalPaidInCapital	2479000	USD
CY2011	exr	Redemption Of Operating Partnership Units For Common Stock Including Additional Paid In Capital RedemptionOfOperatingPartnershipUnitsForCommonStockIncludingAdditionalPaidInCapital	2344000	USD
CY2013	exr	Noncash Or Part Noncash Acquisition Net Real Estate Assets Acquired NoncashOrPartNoncashAcquisitionNetRealEstateAssetsAcquired	331230000	USD
CY2012	exr	Noncash Or Part Noncash Acquisition Net Real Estate Assets Acquired NoncashOrPartNoncashAcquisitionNetRealEstateAssetsAcquired	159297000	USD
CY2011	exr	Noncash Or Part Noncash Acquisition Net Real Estate Assets Acquired NoncashOrPartNoncashAcquisitionNetRealEstateAssetsAcquired	137177000	USD
CY2011	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	132327000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	126723000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	26484000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	46750000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4819000	USD
CY2013Q4	exr	Percentage Of Interest In Real Estate Held By Buyer As Tenant In Common PercentageOfInterestInRealEstateHeldByBuyerAsTenantInCommon	0.50	pure
CY2013Q4	exr	Fair Value Assets Liabilities Transfer Between Level1 And Level2 Of Fair Value Hierarchy Amount FairValueAssetsLiabilitiesTransferBetweenLevel1AndLevel2OfFairValueHierarchyAmount	0	USD
CY2013	exr	Noncontrolling Interests Increase From Purchase Of Interests NoncontrollingInterestsIncreaseFromPurchaseOfInterests	-2489000	USD
CY2013	us-gaap	Nature Of Operations NatureOfOperations	<div style="font-size:10.0pt;font-family:Times New Roman;"> <p style="FONT-FAMILY: times;"><font size="2"><b>1. DESCRIPTION OF BUSINESS</b></font></p> <p style="FONT-FAMILY: times;"><font size="2">        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 facilities located throughout the United States. The Company continues 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 properties 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. The Company has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended (the "Internal Revenue Code"). To the extent the Company continues to qualify as a REIT, it will not be subject to tax, with certain limited exceptions, on the taxable income that is distributed to its stockholders.</font></p> <p style="FONT-FAMILY: times;"><font size="2">        The Company invests in self-storage facilities by acquiring wholly-owned facilities or by acquiring an equity interest in real estate entities. At December 31, 2013, the Company had direct and indirect equity interests in 779 storage facilities. In addition, the Company managed 250 properties for third parties bringing the total number of properties which it owns and/or manages to 1,029. These properties are located in 35 states, Washington, D.C. and Puerto Rico.</font></p> <p style="FONT-FAMILY: times;"><font size="2">        The Company operates in three distinct segments: (1) rental operations; (2) tenant reinsurance; and (3) property management, acquisition and development. The rental operations activities include rental operations of self-storage facilities in which we have an ownership interest. No single tenant accounts for more than 5% of rental income. Tenant reinsurance activities include the reinsurance of risks relating to the loss of goods stored by tenants in the Company's self-storage facilities. The Company's property management, acquisition and development activities include managing, acquiring, developing and selling self-storage facilities.</font></p> </div>
CY2013Q4	exr	Number Of Previously Unconsolidated Entities Required To Be Consolidated NumberOfPreviouslyUnconsolidatedEntitiesRequiredToBeConsolidated	0	item
CY2013Q4	exr	Variable Interest Entity Number Of Entities Consolidated VariableInterestEntityNumberOfEntitiesConsolidated	0	item
CY2012	us-gaap	Net Income Loss NetIncomeLoss	117309000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	50449000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	172076000	USD
CY2013Q4	exr	Tenant Reinsurance Policy Minimum Amount Of Insurance Coverage TenantReinsurancePolicyMinimumAmountOfInsuranceCoverage	2000000	USD
CY2013	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	5896000	USD
CY2013	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	1000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	14496000	USD
CY2013	exr	Partner Capital Account Units Issued PartnerCapitalAccountUnitsIssued	119216000	USD
CY2013	exr	Minority Interest Decrease From Cash Redemptions MinorityInterestDecreaseFromCashRedemptions	41000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	25335000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	3193000	USD
CY2013	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	13262000	USD
CY2013	us-gaap	Dividends Common Stock DividendsCommonStock	163014000	USD
CY2013	exr	Noncash Or Part Noncash Acquisition Notes Payable Assumed And Immediately Defeased NoncashOrPartNoncashAcquisitionNotesPayableAssumedAndImmediatelyDefeased	98960000	USD
CY2012	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	2000	USD
CY2012	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	10267000	USD
CY2012	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	429588000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4356000	USD
CY2012	exr	Minority Interest Decrease From Cash Redemptions MinorityInterestDecreaseFromCashRedemptions	155000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6587000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	3476000	USD
CY2012	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	9197000	USD
CY2012	exr	Minority Interest Decrease From Distributions To Other Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToOtherNoncontrollingInterestHolders	18000	USD
CY2012	us-gaap	Dividends Common Stock DividendsCommonStock	88287000	USD
CY2011	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	18622000	USD
CY2011	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	2000	USD
CY2011	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	112349000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	5757000	USD
CY2011	exr	Minority Interest Decrease From Cash Redemptions MinorityInterestDecreaseFromCashRedemptions	271000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2237000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	2199000	USD
CY2011	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	8098000	USD
CY2011	exr	Minority Interest Decrease From Distributions To Other Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToOtherNoncontrollingInterestHolders	29000	USD
CY2011	us-gaap	Dividends Common Stock DividendsCommonStock	52027000	USD
CY2013	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.45
CY2012	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.85
CY2011	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.56
CY2012	exr	Stock Issued During Period Value Settlement Of Exchangeable Senior Notes StockIssuedDuringPeriodValueSettlementOfExchangeableSeniorNotes	7000	USD
CY2013	exr	Operating Partnership Units Redemption Amount Paid OperatingPartnershipUnitsRedemptionAmountPaid	0	USD
CY2013Q4	exr	Increase In Minority Interest Ownership Percentage By Parent In Joint Venture Partner In Consolidated Self Storage Property IncreaseInMinorityInterestOwnershipPercentageByParentInJointVenturePartnerInConsolidatedSelfStorageProperty	0.10	pure
CY2013Q4	exr	Payments To Acquire Interest In Joint Venture Partner In Consolidated Self Storage Property PaymentsToAcquireInterestInJointVenturePartnerInConsolidatedSelfStorageProperty	1292000	USD
CY2013	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	95232000	USD
CY2013Q4	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	8298000	USD
CY2013	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2013Q4	us-gaap	Share Price SharePrice	42.13
CY2012	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2013Q4	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	2025000	USD
CY2013Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2011	exr	Payments Of Notes Payable And Lines Of Credit PaymentsOfNotesPayableAndLinesOfCredit	452347000	USD
CY2013	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	6964000	USD
CY2013	exr	Payments Of Notes Payable And Lines Of Credit PaymentsOfNotesPayableAndLinesOfCredit	664372000	USD
CY2012	exr	Payments Of Notes Payable And Lines Of Credit PaymentsOfNotesPayableAndLinesOfCredit	921831000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	3505000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	1333000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	8480000	USD
CY2011Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	2263795000	USD
CY2013Q4	us-gaap	Real Estate Federal Income Tax Basis RealEstateFederalIncomeTaxBasis	3679606000	USD
CY2013Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	-4948000	USD
CY2013Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	16487000	USD
CY2013Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	60601000	USD
CY2013	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	446682000	USD
CY2013	us-gaap	Reinsurance Premiums For Insurance Companies By Product Segment Gross Amount ReinsurancePremiumsForInsuranceCompaniesByProductSegmentGrossAmount	47317000	USD
CY2013	us-gaap	Cost Of Revenue CostOfRevenue	140012000	USD
CY2013	exr	Tenant Reinsurance Expense TenantReinsuranceExpense	9022000	USD
CY2013	exr	Acquisition Related Costs AcquisitionRelatedCosts	8618000	USD
CY2013	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	54246000	USD
CY2013	us-gaap	Interest Expense InterestExpense	71630000	USD
CY2013	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	1404000	USD
CY2013	exr	Interest Income On Note Receivable From Preferred Partnership Unit Holders InterestIncomeOnNoteReceivableFromPreferredPartnershipUnitHolders	4850000	USD
CY2013	exr	Gain Loss On Sale Of Real Estate Assets And Purchase Of Partners Interests GainLossOnSaleOfRealEstateAssetsAndPurchaseOfPartnersInterests	46032000	USD
CY2013	us-gaap	Minority Interest In Net Income Loss Preferred Unit Holders MinorityInterestInNetIncomeLossPreferredUnitHolders	8006000	USD
CY2013	exr	Minority Interest In Net Income Loss Operating Partnerships And Other MinorityInterestInNetIncomeLossOperatingPartnershipsAndOther	5474000	USD
CY2013	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	205988000	USD
CY2013Q4	us-gaap	Derivative Assets DerivativeAssets	13630000	USD
CY2013	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	960000	USD
CY2012Q4	us-gaap	Accrued Income Taxes AccruedIncomeTaxes	1414000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Accumulated Depreciation RealEstateAndAccumulatedDepreciationAccumulatedDepreciation	496754000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndBuildingsAndImprovements	4133298000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	3113377000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Land RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	1019921000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Carrying Costs RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	238543000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	2894399000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Land RealEstateAndAccumulatedDepreciationInitialCostOfLand	1000356000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Amount Of Encumbrances RealEstateAndAccumulatedDepreciationAmountOfEncumbrances	1588596000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	939071000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1073761000	USD
CY2013	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	1.70
CY2012Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	10313000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	422000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	572000	USD
CY2013Q4	us-gaap	Deferred Tax Assets State Taxes DeferredTaxAssetsStateTaxes	4570000	USD
CY2012Q4	us-gaap	Deferred Tax Assets State Taxes DeferredTaxAssetsStateTaxes	4135000	USD
CY2013Q4	exr	Number Of Properties Under Construction NumberOfPropertiesUnderConstruction	1	property
CY2013	us-gaap	Schedule Of Liability For Unpaid Claims And Claims Adjustment Expense ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense	<div style="font-size:10.0pt;font-family:Times New Roman;FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt;"> <p style="FONT-FAMILY: times;"> </p> <div style="POSITION: relative; PADDING-BOTTOM: 0pt; PADDING-LEFT: 0pt; WIDTH: 70%; PADDING-RIGHT: 0pt; MARGIN-LEFT: 15%; PADDING-TOP: 0pt;"> <p style="FONT-FAMILY: times;"> </p> <div align="center"> <table style="text-align:left;TEXT-ALIGN: left; WIDTH: 635px;" border="0" cellspacing="0" cellpadding="0" width="635"> <tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;"><!-- TABLE COLUMN WIDTHS SET --> <td style="FONT-FAMILY: times;" align="left"></td> <td style="FONT-FAMILY: times;" width="12"></td> <td style="FONT-FAMILY: times;" width="7" align="right"></td> <td style="FONT-FAMILY: times;" width="44"></td> <td style="FONT-FAMILY: times;" width="12"></td> <td style="FONT-FAMILY: times;" width="7" align="right"></td> <td style="FONT-FAMILY: times;" width="44"></td> <td style="FONT-FAMILY: times;" width="12"></td><!-- TABLE COLUMN WIDTHS END --></tr> <tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;" valign="bottom"> <th style="FONT-FAMILY: times;" align="left"><font size="2"> </font><br /></th> <th style="FONT-FAMILY: times;"><font size="1"> </font></th> <th style="BORDER-BOTTOM: #000000 1pt solid; FONT-FAMILY: times;" colspan="5" align="center"><font size="1"><b>For the Year Ended<br /> December 31,</b></font></th> <th style="FONT-FAMILY: times;"><font size="1"> </font></th></tr> <tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;" valign="bottom"> <th style="FONT-FAMILY: times;" align="left"><font size="1"> </font><br /></th> <th style="FONT-FAMILY: times;"><font size="1"> </font></th> <th style="BORDER-BOTTOM: #000000 1pt solid; FONT-FAMILY: times;" colspan="2" align="center"><font size="1"><b>2013</b></font></th> <th style="FONT-FAMILY: times;"><font size="1"> </font></th> <th style="BORDER-BOTTOM: #000000 1pt solid; FONT-FAMILY: times;" colspan="2" align="center"><font size="1"><b>2012</b></font></th> <th style="FONT-FAMILY: times;"><font size="1"> </font></th></tr> <tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;" valign="top" bgcolor="#CCEEFF"> <td style="FONT-FAMILY: times;" valign="bottom"> <p style="TEXT-INDENT: -10pt; FONT-FAMILY: times; MARGIN-LEFT: 10pt;"><font size="2">Unpaid claims liability at beginning of year</font></p></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom" align="right"><font size="2">$</font></td> <td style="FONT-FAMILY: times;" valign="bottom" align="right"><font size="2">1,414</font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom" align="right"><font size="2">$</font></td> <td style="FONT-FAMILY: times;" valign="bottom" align="right"><font size="2">715</font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td></tr> <tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;" valign="top" bgcolor="white"> <td style="FONT-FAMILY: times;" valign="bottom"> <p style="TEXT-INDENT: -10pt; FONT-FAMILY: times; MARGIN-LEFT: 10pt;"><font size="2">Provision for current year claims</font></p></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom" align="right"><font size="2">3,817</font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom" align="right"><font size="2">3,417</font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td></tr> <tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;" valign="top" bgcolor="#CCEEFF"> <td style="FONT-FAMILY: times;" valign="bottom"> <p style="TEXT-INDENT: -10pt; FONT-FAMILY: times; MARGIN-LEFT: 10pt;"><font size="2">Increase (decrease) in provision for prior year claims</font></p></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom" align="right"><font size="2">(116</font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2">)</font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom" align="right"><font size="2">22</font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td></tr> <tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;" valign="top" bgcolor="white"> <td style="FONT-FAMILY: times;" valign="bottom"> <p style="TEXT-INDENT: -10pt; FONT-FAMILY: times; MARGIN-LEFT: 10pt;"><font size="2">Payments for current year claims</font></p></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom" align="right"><font size="2">(2,627</font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2">)</font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom" align="right"><font size="2">(2,028</font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2">)</font></td></tr> <tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;" valign="top" bgcolor="#CCEEFF"> <td style="FONT-FAMILY: times;" valign="bottom"> <p style="TEXT-INDENT: -10pt; FONT-FAMILY: times; MARGIN-LEFT: 10pt;"><font size="2">Payments for prior year claims</font></p></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom" align="right"><font size="2">(1,252</font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2">)</font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom" align="right"><font size="2">(712</font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2">)</font></td></tr> <tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-SIZE: 1.5pt; PADDING-TOP: 0px;" valign="top" bgcolor="#ffffff"> <td style="LINE-HEIGHT: 0pt; FONT-FAMILY: times;" valign="bottom"><!-- COMMAND=ADD_ROWSHADECOLOR,"#FFFFFF" --><!-- COMMAND=ADD_GUTTERGRID,"line-height:0pt;" --> </td> <td style="LINE-HEIGHT: 0pt; FONT-FAMILY: times;" valign="bottom"> </td> <td style="BORDER-BOTTOM: #000000 1pt solid; LINE-HEIGHT: 0pt; FONT-FAMILY: times;" valign="bottom" colspan="2" align="right"> </td> <td style="LINE-HEIGHT: 0pt; FONT-FAMILY: times;" valign="bottom"> </td> <td style="BORDER-BOTTOM: #000000 1pt solid; LINE-HEIGHT: 0pt; FONT-FAMILY: times;" valign="bottom" colspan="2" align="right"> </td> <td style="LINE-HEIGHT: 0pt; FONT-FAMILY: times;" valign="bottom"> </td></tr> <tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;" valign="top" bgcolor="#ffffff"> <td style="LINE-HEIGHT: 0.1pt; FONT-FAMILY: times;" valign="bottom"><font size="2"><!-- COMMAND=ADD_ROWSHADECOLOR,"#FFFFFF" --><!-- COMMAND=ADD_GUTTERGRID,"line-height:0.1pt;" --></font></td> <td style="LINE-HEIGHT: 0.1pt; FONT-FAMILY: times;" valign="bottom"></td> <td style="LINE-HEIGHT: 0.1pt; FONT-FAMILY: times;" valign="bottom"></td> <td style="LINE-HEIGHT: 0.1pt; FONT-FAMILY: times;" valign="bottom" align="right"></td> <td style="LINE-HEIGHT: 0.1pt; FONT-FAMILY: times;" valign="bottom"></td> <td style="LINE-HEIGHT: 0.1pt; FONT-FAMILY: times;" valign="bottom"></td> <td style="LINE-HEIGHT: 0.1pt; FONT-FAMILY: times;" valign="bottom" align="right"></td> <td style="LINE-HEIGHT: 0.1pt; FONT-FAMILY: times;" valign="bottom"></td></tr> <tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;" valign="top" bgcolor="white"> <td style="FONT-FAMILY: times;" valign="bottom"> <p style="TEXT-INDENT: -10pt; FONT-FAMILY: times; MARGIN-LEFT: 10pt;"><font size="2">Unpaid claims liability at the end of the year</font></p></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom" align="right"><font size="2">$</font></td> <td style="FONT-FAMILY: times;" valign="bottom" align="right"><font size="2">1,236</font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td> <td style="FONT-FAMILY: times;" valign="bottom" align="right"><font size="2">$</font></td> <td style="FONT-FAMILY: times;" valign="bottom" align="right"><font size="2">1,414</font></td> <td style="FONT-FAMILY: times;" valign="bottom"><font size="2"> </font></td></tr> <tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-SIZE: 1.5pt; PADDING-TOP: 0px;" valign="top" bgcolor="#ffffff"> <td style="LINE-HEIGHT: 0pt; FONT-FAMILY: times;" valign="bottom"><!-- COMMAND=ADD_ROWSHADECOLOR,"#FFFFFF" --><!-- COMMAND=ADD_GUTTERGRID,"line-height:0pt;" --> </td> <td style="LINE-HEIGHT: 0pt; FONT-FAMILY: times;" valign="bottom"> </td> <td style="BORDER-BOTTOM: #000000 1pt solid; LINE-HEIGHT: 0pt; FONT-FAMILY: times;" valign="bottom" colspan="2" align="right"> </td> <td style="LINE-HEIGHT: 0pt; FONT-FAMILY: times;" valign="bottom"> </td> <td style="BORDER-BOTTOM: #000000 1pt solid; LINE-HEIGHT: 0pt; FONT-FAMILY: times;" valign="bottom" colspan="2" align="right"> </td> <td style="LINE-HEIGHT: 0pt; FONT-FAMILY: times;" valign="bottom"> </td></tr> <tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;" valign="top" bgcolor="#ffffff"> <td style="LINE-HEIGHT: 0.1pt; FONT-FAMILY: times;" valign="bottom"><font size="2"><!-- COMMAND=ADD_ROWSHADECOLOR,"#FFFFFF" --><!-- COMMAND=ADD_GUTTERGRID,"line-height:0.1pt;" --></font></td> <td style="LINE-HEIGHT: 0.1pt; FONT-FAMILY: times;" valign="bottom"></td> <td style="LINE-HEIGHT: 0.1pt; FONT-FAMILY: times;" valign="bottom"></td> <td style="LINE-HEIGHT: 0.1pt; FONT-FAMILY: times;" valign="bottom" align="right"></td> <td style="LINE-HEIGHT: 0.1pt; FONT-FAMILY: times;" valign="bottom"></td> <td style="LINE-HEIGHT: 0.1pt; FONT-FAMILY: times;" valign="bottom"></td> <td style="LINE-HEIGHT: 0.1pt; FONT-FAMILY: times;" valign="bottom" align="right"></td> <td style="LINE-HEIGHT: 0.1pt; FONT-FAMILY: times;" valign="bottom"></td></tr> <tr style="padding:0;PADDING-BOTTOM: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px;" valign="top" bgcolor="#ffffff"> <td style="LINE-HEIGHT: 0.75pt; FONT-FAMILY: times;" valign="bottom"><font size="2"><!-- COMMAND=ADD_ROWSHADECOLOR,"#FFFFFF" --><!-- COMMAND=ADD_GUTTERGRID,"line-height:0.75pt;" --></font></td> <td style="LINE-HEIGHT: 0.75pt; FONT-FAMILY: times;" valign="bottom"></td> <td style="LINE-HEIGHT: 0.75pt; FONT-FAMILY: times;" valign="bottom"></td> <td style="LINE-HEIGHT: 0.75pt; 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LINE-HEIGHT: 0pt; FONT-FAMILY: times;" valign="bottom" colspan="2" align="right"> </td> <td style="LINE-HEIGHT: 0pt; FONT-FAMILY: times;" valign="bottom"> </td></tr></table></div> <!-- end of user-specified TAGGED TABLE --></div></div>
CY2013	exr	Number Of Claims Made Under Tenant Reinsurance Program NumberOfClaimsMadeUnderTenantReinsuranceProgram	2316	item
CY2012	exr	Number Of Claims Made Under Tenant Reinsurance Program NumberOfClaimsMadeUnderTenantReinsuranceProgram	2060	item
CY2011	exr	Number Of Claims Made Under Tenant Reinsurance Program NumberOfClaimsMadeUnderTenantReinsuranceProgram	1834	item
CY2013Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Gross LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseGross	1236000	USD
CY2012Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Gross LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseGross	1414000	USD
CY2011Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Gross LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseGross	715000	USD
CY2013	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsCurrentYear	3817000	USD
CY2012	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsCurrentYear	3417000	USD
CY2013	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	-116000	USD
CY2012	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	22000	USD
CY2013	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear	2627000	USD
CY2012	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear	2028000	USD
CY2013	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears	1252000	USD
CY2012	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears	712000	USD
CY2013	us-gaap	Undistributed Earnings UndistributedEarnings	567000	USD
CY2012	us-gaap	Undistributed Earnings UndistributedEarnings	279000	USD
CY2011	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	365000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	171509000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	117030000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	50084000	USD
CY2013	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	567000	USD
CY2012	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	279000	USD
CY2013Q4	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	4500000	shares
CY2013Q4	exr	Common Stock Offer Price Per Share CommonStockOfferPricePerShare	45.81
CY2013Q4	exr	Gross Proceeds From Issuance Of Common Stock GrossProceedsFromIssuanceOfCommonStock	206145000	USD
CY2013Q4	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	157000	USD
CY2013Q4	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	205988000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	14557000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	9951000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	663000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	340000	USD
CY2013Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	15220000	USD
CY2012Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	10291000	USD
CY2013Q4	exr	Deferred Tax Assets Tax Deferred Captive Insurance Subsidiary DeferredTaxAssetsTaxDeferredCaptiveInsuranceSubsidiary	400000	USD
CY2012Q4	exr	Deferred Tax Assets Tax Deferred Captive Insurance Subsidiary DeferredTaxAssetsTaxDeferredCaptiveInsuranceSubsidiary	385000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	1043000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	1193000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	1394000	USD
CY2012	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	1.30
CY2012	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	457786000	USD
CY2013Q4	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	160000	USD
CY2013	exr	Number Of Acquired Property Included In Pro Forma Financial Information Out Of Total Properties NumberOfAcquiredPropertyIncludedInProFormaFinancialInformationOutOfTotalProperties	55	property
CY2013	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	189794000	USD
CY2013	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	1.70
CY2012	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	1.30
CY2013	us-gaap	Business Combination Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual	17907000	USD
CY2013	us-gaap	Business Combination Pro Forma Information Earnings Or Loss Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual	6132000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	20214000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	22413000	USD
CY2013Q1	us-gaap	Net Income Loss NetIncomeLoss	31425000	USD
CY2013Q2	us-gaap	Net Income Loss NetIncomeLoss	34466000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	38606000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	36076000	USD
CY2013Q3	us-gaap	Net Income Loss NetIncomeLoss	29245000	USD
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	76940000	USD
CY2013Q4	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	0	USD
CY2011	us-gaap	Undistributed Earnings UndistributedEarnings	365000	USD
CY2013	exr	Noncontrolling Interest Increase Related To Consolidated Joint Venture NoncontrollingInterestIncreaseRelatedToConsolidatedJointVenture	870000	USD
CY2013	exr	Receivable Eliminated Due To Acquisition Of Joint Venture Partner Interest ReceivableEliminatedDueToAcquisitionOfJointVenturePartnerInterest	-2251000	USD
CY2013	exr	Incremental Common Shares Attributable To Exchangeable Preferred Operating Partnership Units IncrementalCommonSharesAttributableToExchangeablePreferredOperatingPartnershipUnits	989980	shares
CY2012	exr	Incremental Common Shares Attributable To Exchangeable Preferred Operating Partnership Units IncrementalCommonSharesAttributableToExchangeablePreferredOperatingPartnershipUnits	989980	shares
CY2011	exr	Incremental Common Shares Attributable To Exchangeable Preferred Operating Partnership Units IncrementalCommonSharesAttributableToExchangeablePreferredOperatingPartnershipUnits	989980	shares
CY2013Q4	exr	Divestiture Of Interest In Parcel Of Undeveloped Land Held For Sale DivestitureOfInterestInParcelOfUndevelopedLandHeldForSale	0.50	pure

Files In Submission

Name	View Source	Status
0001047469-14-001686-index-headers.html	Edgar Link	pending
0001047469-14-001686-index.html	Edgar Link	pending
0001047469-14-001686.txt	Edgar Link	pending
0001047469-14-001686-xbrl.zip	Edgar Link	pending
a2218605z10-k.htm	Edgar Link	pending
a2218605zex-21_1.htm	Edgar Link	pending
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a2218605zex-31_1.htm	Edgar Link	pending
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a2218605zex-32_1.htm	Edgar Link	pending
exr-20131231.xml	Edgar Link	completed
exr-20131231.xsd	Edgar Link	pending
exr-20131231_cal.xml	Edgar Link	unprocessable
exr-20131231_def.xml	Edgar Link	unprocessable
exr-20131231_lab.xml	Edgar Link	unprocessable
exr-20131231_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
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Financial_Report.xlsx	Edgar Link	pending
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2012 Q4 Form 10-K Financial Statement

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$EXR Extra Space Storage Inc. Stock $exr

2012 Q4 Form 10-K Financial Statement

#000104746914001686 Filed on March 03, 2014

Income Statement

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$EXR
Extra Space Storage Inc. Stock $exr