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Property Acquisitions and Dispositions - Additional Information (Details) |  |  |  |  |  |  | 12 Months Ended
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Jul. 25, 2023 USD ($) | Jul. 20, 2023 USD ($) store shares | Sep. 15, 2022 USD ($) store shares | Jun. 21, 2022 USD ($) store | Jun. 01, 2022 USD ($) store | May 18, 2022 USD ($) store | Dec. 31, 2024 USD ($) store shares | Dec. 31, 2023 USD ($) store shares | Dec. 31, 2022 USD ($)
Asset Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Repayments of debt |  |  |  |  |  |  | $ 8,724,444,000 | $ 7,088,984,000 | $ 4,207,700,000
Total purchase price |  |  | $ 590,000,000 |  |  |  | $ 584,168,000 | $ 147,729,000 |
Preferred stock, issued (in shares) | shares |  |  |  |  |  |  | 0 | 0 |
Value of units issued |  |  |  |  |  |  | $ 100,414,000 | $ 0 |
Number of stores acquired | store |  |  | 106 |  |  |  | 58 | 14 |
Parcels of land acquired | store |  |  | 8 |  |  |  |  |  |
Transaction costs |  |  |  |  |  |  | $ 0 | $ 0 | $ 1,548,000
Number of stores sold that were classified as held for sale | store |  |  |  |  |  |  | 5 |  |
Number of stores sold | store |  |  |  |  |  |  | 6 |  |
Number of operating stores held-for-sale | store |  |  |  |  |  |  | 18 |  |
Number of stores disposed of | store |  |  |  | 1 |  | 1 |  |  |
Proceeds from sale of real estate assets and investments in real estate ventures |  |  |  |  |  | $ 38,745,000 | $ 102,484,000 |  |
Loss on sale |  |  |  |  |  |  | 33,662,000 |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |  |  |  |  |
Asset Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Gain (loss) on disposition of assets |  |  |  | $ 14,200,000 |  |  |  |  |
Operating Partnership |  |  |  |  |  |  |  |  |
Asset Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Preferred stock, issued (in shares) | shares |  |  | 619,294 |  |  |  |  |  |
Value of units issued |  |  | $ 125,000,000 |  |  |  |  |  |
Bargold |  |  |  |  |  |  |  |  |
Asset Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Total consideration transferred |  |  |  |  | $ 179,302,000 |  |  |  |
Transaction costs |  |  |  |  | $ 1,465,000 |  |  |  |
Life Storage, Inc |  |  |  |  |  |  |  |  |
Asset Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Repayments of debt |  | $ 375,000,000 |  |  |  |  |  |  |
Bargold |  |  |  |  |  |  |  |  |
Asset Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of storage units | store |  |  |  |  | 17,000 |  |  |  |
Occupancy rate |  |  |  |  | 0.97 |  |  |  |
Unsecured senior notes |  |  |  |  |  |  |  |  |
Asset Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Senior note balances |  |  |  |  |  |  | $ 8,025,000,000 | $ 6,725,000,000 |
Unsecured senior notes | Senior Notes, Assumed From Life Storage |  |  |  |  |  |  |  |  |
Asset Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Repayments of debt | $ 2,351,100,000 |  |  |  |  |  |  |  |
Senior note balances | $ 48,900,000 |  |  |  |  |  |  |  |
Life Storage, Inc |  |  |  |  |  |  |  |  |
Asset Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of wholly owned stores acquired | store |  | 757 |  |  |  |  |  |  |
Number of consolidated joint venture stores acquired | store |  | 1 |  |  |  |  |  |  |
Equity interest issued conversion ratio | shares |  | 0.895 |  |  |  |  |  |  |
Consideration transferred |  | $ 11,602,808,000 |  |  |  |  |  |  |
Real estate assets, estimated useful life |  | 39 years |  |  |  |  |  |  |
Tenant relationships, estimated useful life |  | 18 months |  |  |  |  |  |  |
Intangible assets, amortization period |  | 36 months |  |  |  |  |  |  |
Total purchase price |  | $ 12,850,127,000 |  |  |  |  |  |  |
Life Storage, Inc | Line of Credit |  |  |  |  |  |  |  |  |
Asset Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Extinguishment of debt |  | 1,160,000,000 |  |  |  |  |  |  |
Life Storage, Inc | Secured Debt |  |  |  |  |  |  |  |  |
Asset Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Repayments of debt |  | $ 32,000,000 |  |  |  |  |  |  |

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