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Investments in Unconsolidated Real Estate Ventures - Additional Information (Details) $ in Millions, $ in Millions |  |  |  |  | 12 Months Ended |  |  |  |  |  |  |  |
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Jul. 17, 2024 CAD ($) | Nov. 03, 2023 CAD ($) | Jun. 01, 2022 CAD ($) RealEstateVenture | Mar. 17, 2021 RealEstateVenture | Dec. 31, 2024 USD ($) Property | Dec. 31, 2023 USD ($) | Dec. 31, 2024 CAD ($) Property | Jul. 18, 2024 USD ($) | Jul. 17, 2024 USD ($) | Jul. 17, 2024 CAD ($) | Dec. 31, 2023 CAD ($) | Jan. 12, 2023 | Sep. 13, 2022 CAD ($) | May 25, 2022 | Mar. 16, 2021 USD ($)
Investments In Unconsolidated Real Estate Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increased amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 120.0 |  |
Initial maximum amount available |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500.0
Guarantee obligations recourse percentage |  |  |  |  | 50.00% |  | 50.00% |  |  |  |  |  |  |  |
RBC JV Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments In Unconsolidated Real Estate Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding amount |  |  |  |  | $ 48.7 |  | $ 70.0 |  |  |  |  |  |  |  |
Term loan |  | $ 70.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of joint venture property owned |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date |  | Nov. 02, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed annual rate |  | 6.21% |  |  |  |  |  |  | 4.97% | 4.97% |  |  |  |  |
Percentage of secured obligation |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Loan amount |  | $ 68.9 |  |  |  |  |  |  |  |  |  |  |  |  |
RBC JV Term Loan II |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments In Unconsolidated Real Estate Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding amount |  |  |  |  | $ 32.0 |  | $ 46.0 |  |  |  |  |  |  |  |
Term loan | $ 46.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of joint venture property owned | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | Nov. 03, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of secured obligation | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan amount |  |  |  |  |  |  |  |  | $ 34.1 | $ 46.4 |  |  |  |  |
Regent Property |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments In Unconsolidated Real Estate Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |
Whitby Property |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments In Unconsolidated Real Estate Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |
Canadian JV Properties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments In Unconsolidated Real Estate Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  | 50.00% |  | 50.00% |  |  |  |  |  |  |  |
J V Properties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments In Unconsolidated Real Estate Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of properties under ownership interests | Property |  |  |  |  | 11 |  | 11 |  |  |  |  |  |  |  |
Number of unconsolidated real estate development | Property |  |  |  |  | 1 |  | 1 |  |  |  |  |  |  |  |
Nantucket Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments In Unconsolidated Real Estate Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of Joint venture minority ownership |  |  |  |  |  |  |  | 38.00% |  |  |  |  |  |  |
Carrying value of minority investment |  |  |  |  | $ 6.0 |  |  | $ 4.9 |  |  |  |  |  |  |
SmartCentres Storage Finance LP | Master Mortgage Commitment Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments In Unconsolidated Real Estate Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding amount |  |  |  |  | $ 13.0 | $ 43.3 | $ 18.7 |  |  |  | $ 57.3 |  |  |  |
Initial maximum amount available |  |  |  |  | 6.32% |  |  |  |  |  |  |  |  |  |
Loan to value ratio |  |  |  |  | 70.00% |  | 70.00% |  |  |  |  |  |  |  |
SmartCentres Storage Finance LP | Regent Property |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments In Unconsolidated Real Estate Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |
SmartCentres Storage Finance LP | Whitby Property |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments In Unconsolidated Real Estate Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |
Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments In Unconsolidated Real Estate Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity in earnings (loss) of unconsolidated real estate ventures |  |  |  |  | $ 1.4 | $ 1.6 |  |  |  |  |  |  |  |  |
SST IV Merger Agreement | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments In Unconsolidated Real Estate Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self storage real estate joint ventures | RealEstateVenture |  |  |  | 6 |  |  |  |  |  |  |  |  |  |  |
SSGT II Merger Agreement | SmartCentres Storage Finance LP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments In Unconsolidated Real Estate Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Initial maximum amount available |  |  | $ 34.3 |  |  |  |  |  |  |  |  |  |  |  |
Guarantee obligations recourse percentage |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |
SSGT II Merger Agreement | SmartCentres Storage Finance LP | Dupont And Aurora Joint Venture Properties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments In Unconsolidated Real Estate Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interests |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |
SSGT II Merger Agreement | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments In Unconsolidated Real Estate Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self storage real estate joint ventures | RealEstateVenture |  |  | 3 |  |  |  |  |  |  |  |  |  |  |  |

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