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Earnings Per Share - Additional Information (Details) - shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |  |
Weighted average nonvested restricted shares outstanding (in shares) | 0 | 100,000 | 0 | 300,000
Weighted average number of OP units outstanding (in shares) | 0 | 30,000 | 0 | 59,000
Market Performance-Based Equity Award |  |  |  |
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |  |
Equity awards issued (in shares) | 0 | 0 | 0 | 0
Equity awards outstanding (in shares) | 0 |  | 0 |

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- Definition Share based compensation arrangement by share based payment award equity instruments other than options issuable during period. + References No definition available. + Details
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Namespace Prefix: | cdr_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Outstanding During Period + References No definition available. + Details
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- Definition Weighted average number of operating partnership units outstanding. + References No definition available. + Details
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Balance Type: | na
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition This element represents nonvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid). Basic and dilutive earnings per share are generally disclosed for such shares using the two-class method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 68B -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-68B + Details
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- Details
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