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v3.23.1

Loans Payable (Narrative) (Details) | 3 Months Ended
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Mar. 31, 2023 PropertyPortfolio
Debt Disclosure [Abstract] |
Number of properties collateralize by secured term loans | 12

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- Definition Number of properties collateralize by secured term loans. + References No definition available. + Details
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Namespace Prefix: | cdr_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_DebtDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration