XML 73 R57.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Summary of Significant Accounting Policies - Earnings Per Common Share (Details) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) $ / shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |
Average share price (in dollars per share) | $ / shares | $ 156.25
Series A Units |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |
Instruments to be settled in cash (at least) | $ | $ 101,700

X
- Definition Average Share Price Per Share + References No definition available. + Details
Name: | exr_AverageSharePricePerShare
Namespace Prefix: | exr_
Data Type: | dtr-types1:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the minimum amount of convertible preferred operating partnership units which will be settled in cash upon conversion. + References No definition available. + Details
Name: | exr_PreferredOperatingPartnershipUnitsAmountToBeSettledInCashMinimum
Namespace Prefix: | exr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PreferredUnitsByNameAxis=exr_SeriesAUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |