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v3.22.4

Related Party Transactions (Narrative) (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2022 USD ($) adult_children storage_facility | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Related Party Transaction [Line Items] |  |  |
Tenants reinsurance premiums earned by subsidiaries | $ | $ 2.2 | $ 2.1 | $ 1.6
Canada | Hughes Owned Canadian Facilities |  |  |
Related Party Transaction [Line Items] |  |  |
Number of self-storage facilities | storage_facility | 65 |  |
Number of Ms. Gustavson's adult children owning remaining equity in LLC | adult_children | 2 |  |
Ownership interest by parent | 0.00% |  |
Canada | Hughes Owned Canadian Facilities | Tamara Hughes Gustavson |  |  |
Related Party Transaction [Line Items] |  |  |
Ownership interest of noncontrolling owners (less than) | 0.10% |  |

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