v3.26.3
Segment Information (Schedule of Segment Information) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Reporting [Line Items]        
Revenue $ 1,366,190 $ 1,224,043 $ 3,816,812 $ 3,608,321
Operating income 316,960 491,517 1,257,919 1,455,522
Depreciation and amortization (412,614) (290,364) (991,094) (856,295)
Net income 378,348 514,773 1,410,661 1,286,975
Real estate acquisition and development expense (4,291) (2,837) (11,906) (12,798)
General and administrative (38,257) (28,783) (108,290) (79,694)
Transaction and integration expense (114,642) 0 (119,329) 0
Interest and other income (expense) 14,943 21,012 39,598 47,035
Interest expense (102,534) (79,692) (267,333) (223,310)
Equity in earnings (losses) of unconsolidated real estate entities (5,470) 3,674 6,310 5,071
Foreign currency exchange gain (loss) 9,868 899 68,728 (213,866)
Gain on sale of real estate 27,011 502 27,355 710
Income tax (provision) benefit 15,036 (2,831) 10,751 (7,497)
Operating Segments        
Segment Reporting [Line Items]        
Net income 576,684 602,829 1,764,777 1,771,324
Segment Reconciling Items        
Segment Reporting [Line Items]        
Real estate acquisition and development expense (4,291) (2,837) (11,906) (12,798)
General and administrative (38,257) (28,783) (108,290) (79,694)
Interest and other income (expense) 14,943 21,012 39,598 47,035
Interest expense (102,534) (79,692) (267,333) (223,310)
Equity in earnings (losses) of unconsolidated real estate entities (5,470) 3,674 6,310 5,071
Foreign currency exchange gain (loss) 9,868 899 68,728 (213,866)
Gain on sale of real estate 27,011 502 27,355 710
Income tax (provision) benefit 15,036 (2,831) 10,751 (7,497)
Self-Storage Operations Reportable Segment | Operating Segments        
Segment Reporting [Line Items]        
Revenue 1,254,111 1,138,837 3,522,183 3,360,493
Cost of operations: (333,194) (294,465) (946,693) (880,336)
Indirect cost of operations (35,573) (35,143) (111,019) (105,567)
Operating income 920,917 844,372 2,575,490 2,480,157
Depreciation and amortization (403,870) (290,251) (982,125) (855,957)
Net income 517,047 554,121 1,593,365 1,624,200
Self-Storage Operations Reportable Segment | Operating Segments | Property taxes        
Segment Reporting [Line Items]        
Cost of operations: (132,983) (119,397) (390,379) (362,607)
Self-Storage Operations Reportable Segment | Operating Segments | On-site property manager payroll        
Segment Reporting [Line Items]        
Cost of operations: (45,229) (40,915) (125,694) (119,998)
Self-Storage Operations Reportable Segment | Operating Segments | Repairs and maintenance        
Segment Reporting [Line Items]        
Cost of operations: (31,016) (23,946) (81,795) (73,840)
Self-Storage Operations Reportable Segment | Operating Segments | Utilities        
Segment Reporting [Line Items]        
Cost of operations: (21,104) (17,790) (54,138) (50,008)
Self-Storage Operations Reportable Segment | Operating Segments | Marketing        
Segment Reporting [Line Items]        
Cost of operations: (33,424) (26,610) (85,720) (77,270)
Self-Storage Operations Reportable Segment | Operating Segments | Other direct property costs        
Segment Reporting [Line Items]        
Cost of operations: (33,865) (30,664) (97,948) (91,046)
Ancillary Operations | Operating Segments        
Segment Reporting [Line Items]        
Revenue 112,079 85,206 294,629 247,828
Operating income 68,381 48,821 180,381 147,462
Depreciation and amortization (8,744) (113) (8,969) (338)
Net income 59,637 48,708 171,412 147,124
Cost of operations $ (43,698) $ (36,385) $ (114,248) $ (100,366)