SCHEDULE III REAL ESTATE AND RELATED DEPRECIATION (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Activity in Storage facilities | |||
| Balance at beginning of year | $ 7,295,778 | $ 7,183,494 | $ 5,489,754 |
| Acquisitions & improvements | 74,259 | 191,495 | 1,795,965 |
| Fully depreciated assets | (29,133) | (32,344) | (52,722) |
| Dispositions and other | (4,717) | (6,230) | (19,408) |
| Construction in progress, net | 31,426 | (40,637) | (30,095) |
| Balance at end of year | 7,367,613 | 7,295,778 | 7,183,494 |
| Activity in Accumulated depreciation | |||
| Balance at beginning of year | 1,247,775 | 1,085,824 | 983,940 |
| Depreciation expense | 199,065 | 195,522 | 160,933 |
| Fully depreciated assets | (29,133) | (32,344) | (52,722) |
| Dispositions and other | (1,330) | (1,227) | (6,327) |
| Balance at end of year | 1,416,377 | 1,247,775 | 1,085,824 |
| Storage properties, net | 5,951,236 | $ 6,048,003 | $ 6,097,670 |
| Aggregate cost of real estate investments for federal income tax purposes | $ 7,719,600 | ||