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v3.23.1

Income Taxes - Additional Information (Details) | 3 Months Ended
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Mar. 31, 2023
Earliest Tax Year [Member] |
Income Tax [Line Items] |
Non-Capital Losses Expiration Year | 2032
Latest Tax Year [Member] |
Income Tax [Line Items] |
Non-Capital Losses Expiration Year | 2042

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- Definition Line items represent income taxes. + References No definition available. + Details
Name: | ck0001585389_IncomeTaxLineItems
Namespace Prefix: | ck0001585389_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Non-capital losses expiration year. + References No definition available. + Details
Name: | ck0001585389_NonCapitalLossesExpirationYear
Namespace Prefix: | ck0001585389_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_TaxPeriodAxis=us-gaap_EarliestTaxYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxPeriodAxis=us-gaap_LatestTaxYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |