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Segment Information - Schedule of Financial Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Segment Reporting Information [Line Items] |  |  |  |
Revenues: | $ 810,663 | $ 511,386 | $ 1,610,202 | $ 1,014,436
Operating expenses: | 451,243 | 238,047 | 914,954 | 477,555
Net operating income: | 304,761 | 273,339 | 640,589 | 536,881
Management fees and other income | 29,858 | 22,206 | 60,006 | 43,590
General and administrative expense | (39,901) | (34,842) | (83,623) | (69,605)
Depreciation and amortization expense | (194,809) | (79,086) | (391,775) | (157,576)
Interest expense | (137,133) | (86,372) | (270,020) | (166,471)
Non-cash interest expense related to amortization of discount on Life Storage unsecured senior notes | (10,853) | 0 | (21,558) | 0
Interest income | 31,226 | 21,077 | 54,799 | 40,515
Equity in earnings and dividend income from unconsolidated real estate entities | 17,255 | 13,254 | 32,262 | 23,559
Income tax expense | (9,844) | (5,986) | (16,586) | (10,294)
Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues: | 780,805 | 489,180 | 1,550,196 | 970,846
Operating expenses: | 216,533 | 124,119 | 439,556 | 250,374
Net operating income: | 564,272 | 365,061 | 1,110,640 | 720,472
Self-Storage Operations | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues: | 697,100 | 440,747 | 1,385,144 | 874,709
Operating expenses: | 196,902 | 114,637 | 401,420 | 231,803
Net operating income: | 500,198 | 326,110 | 983,724 | 642,906
Tenant Reinsurance | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues: | 83,705 | 48,433 | 165,052 | 96,137
Operating expenses: | 19,631 | 9,482 | 38,136 | 18,571
Net operating income: | $ 64,074 | $ 38,951 | $ 126,916 | $ 77,566

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