v3.26.1
Earnings Per Common Share - Additional Information (Details) - $ / shares
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Earnings Per Share [Abstract]
Average share price (in dollars per share)
$ 140.96
$ 151.64
X
- Definition
Average Share Price Per Share
+ References
No definition available.
+ Details
Name:
exr_AverageSharePricePerShare
Namespace Prefix:
exr_
Data Type:
dtr-types:perShareItemType
Balance Type:
na
Period Type:
duration
X
- References
No definition available.
+ Details
Name:
us-gaap_EarningsPerShareAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration