v3.26.1
Subsequent Events (Details)
ft² in Millions, $ in Millions
 1 Months Ended 6 Months Ended 7 Months Ended
Jul. 29, 2026
USD ($)
state
storage_facility
Jul. 20, 2026
USD ($)
Jul. 29, 2026
USD ($)
state
ft²
storage_facility
shares
Jun. 30, 2026
USD ($)
ft²
shares
Jul. 29, 2026
USD ($)
state
storage_facility
shares
Subsequent Event [Line Items]          
Commercial paper       $ 0.0  
At-the-Market (“ATM”) Program | Common Stock          
Subsequent Event [Line Items]          
Forward contract indexed to issuer's equity, shares (in shares) | shares       425,278  
Acquisition of Self-Storage Facilities Other Investments          
Subsequent Event [Line Items]          
Net rentable area acquired (in Sq.ft) | ft²       1.7  
Total cost of acquisition       $ 243.2  
Subsequent Event          
Subsequent Event [Line Items]          
Commercial paper $ 800.0   $ 800.0   $ 800.0
Subsequent Event | Commercial Paper          
Subsequent Event [Line Items]          
Debt instrument, term 8 days        
Subsequent Event | At-the-Market (“ATM”) Program | Common Stock          
Subsequent Event [Line Items]          
Forward contract indexed to issuer's equity, shares (in shares) | shares     370,731   796,009
Expected consideration     $ 120.8   $ 258.2
Subsequent Event | Acquisition of Self-Storage Facilities Other Investments          
Subsequent Event [Line Items]          
Number of self-storage facilities acquired | storage_facility 21   21   21
Number of states with self-storage facilities to be acquired | state 6   6   6
Net rentable area acquired (in Sq.ft) | ft²     1.5    
Total cost of acquisition     $ 211.7    
Subsequent Event | Senior Notes | 4.855% Senior Notes Due 2036          
Subsequent Event [Line Items]          
Debt issuance amount   $ 900.0      
Interest rate (in percent)   4.855%      
Subsequent Event | Senior Notes | 4.700% Senior Notes Due 2032          
Subsequent Event [Line Items]          
Debt issuance amount   $ 400.0      
Interest rate (in percent)   4.70%      
Subsequent Event | Senior Notes | 5.150% Senior Notes Due 2036          
Subsequent Event [Line Items]          
Debt issuance amount   $ 500.0      
Interest rate (in percent)   5.15%      
Net proceeds from offering   $ 886.0