v3.26.1
Segment Information - Schedule of Financial Information of Business Segments (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Revenues    
Revenues $ 856,027 $ 819,997
Net operating income    
Net operating income 367,553 388,730
Other components of net income:    
Management fees and other income 33,695 30,905
General and administrative expense (46,509) (45,974)
Depreciation and amortization expense (185,795) (180,356)
Gain on real estate assets held for sale and sold, net 0 35,761
Interest expense (147,299) (142,399)
Non-cash interest expense related to amortization of discount on unsecured senior notes, net (12,555) (11,313)
Interest income 39,543 38,967
Equity in earnings and dividend income from unconsolidated real estate entities 15,760 19,931
Equity in earnings of unconsolidated real estate ventures - gain on sale of a joint venture interest 207 0
Income tax expense (10,789) (8,991)
Net income 252,420 284,925
Operating Segments    
Revenues    
Revenues 822,332 789,092
Operating expenses    
Total segment operating expenses 256,170 240,698
Net operating income    
Net operating income 566,162 548,394
Operating Segments | Self-Storage Operations    
Revenues    
Revenues 733,213 704,380
Operating expenses    
Payroll and benefits 45,542 43,746
Marketing 15,758 15,150
Office expense 19,594 18,854
Property operating expense 41,107 37,365
Repairs and maintenance 17,968 16,257
Property taxes 83,975 79,884
Insurance 9,714 8,432
Other segment items 4,645 3,894
Total segment operating expenses 238,303 223,582
Net operating income    
Net operating income 494,910 480,798
Operating Segments | Tenant Reinsurance    
Revenues    
Revenues 89,119 84,712
Operating expenses    
Other segment items 17,867 17,116
Net operating income    
Net operating income $ 71,252 $ 67,596