v3.26.1
Description of the Business (Details)
ft² in Millions, $ in Millions
 6 Months Ended
Jun. 30, 2026
USD ($)
ft²
storage_facility
country
state
Shurgard Self Storage Sa  
Schedule of Equity Method Investments [Line Items]  
PSA number of self-storage facilities | storage_facility 335
Net rentable area (in square feet) 19.0
Ownership interest (in percent) 35.00%
Number of countries in which entity operates | country 7
Market value | $ $ 1,050
Public Storage  
Schedule of Equity Method Investments [Line Items]  
PSA number of self-storage facilities | storage_facility 3,196
Net rentable area (in square feet) 231.4
Number of states with facilities | state 40
Number of third-party self-storage facilities managed | storage_facility 388
Public Storage | Commercial and Retail Space  
Schedule of Equity Method Investments [Line Items]  
Net rentable area (in square feet) 0.9
Public Storage | Facilities, Managed For Third Parties  
Schedule of Equity Method Investments [Line Items]  
Net rentable area (in square feet) 28.0
Public Storage Parent  
Schedule of Equity Method Investments [Line Items]  
Ownership interest (in percent) 99.75%
Trustees and Officers  
Schedule of Equity Method Investments [Line Items]  
Ownership interest of noncontrolling owners (less than) (in percent) 0.25%