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Commitments and Contingencies (Details) | Mar. 31, 2021 USD ($)
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Commitments and Contingencies Disclosure [Abstract] |
Letters of credit outstanding | $ 0
Outstanding letters of credit and performance bonds | 577,000
Future obligations under leases to fund tenant improvements and other future construction obligations | $ 144,000,000.0

X
- Definition Outstanding commitments to fund real estate projects. + References No definition available. + Details
Name: | cuz_OutstandingCommitmentsToFundRealEstateProjects
Namespace Prefix: | cuz_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Outstanding letters of credit and performance bonds as of the balance sheet date. + References No definition available. + Details
Name: | cuz_OutstandingLettersOfCreditAndPerformanceBonds
Namespace Prefix: | cuz_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant