Debt Instrument, Number of Tranches

No definition available.

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- Definition

The upper end of the range of leverage ratios used to determine the applicable spread over the variable rate base interest rate under the line of credit.

+ References

No definition available.

+ Details

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- Definition

Previous Minimum Consolidated Fixed Charge Coverage Ratio

+ References

No definition available.

+ Details

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- Definition

Shareholders' Equity, Minimum

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Unencumbered interest coverage ratio

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	na
Period Type:	instant

- 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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Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

Name:	us-gaap_DebtInstrumentAxis=cuz_TenYearNotewithInterestRateof4.09Member
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- Details

Name:	us-gaap_DebtInstrumentAxis=cuz_EightYearNotewithInterestRateof3.91Member
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Notes Payable (Unsecured Senior Notes) (Details) - Unsecured Senior Notes	1 Months Ended		9 Months Ended
	Jul. 31, 2017 USD ($)	Apr. 30, 2017 USD ($) tranche	Sep. 30, 2017 USD ($)
Debt Instrument [Line Items]
Debt amount		$ 350,000,000
Number of tranches \| tranche		2
Minimum fixed charge coverage ratio			1.50
Overall leverage ratio (no more than)			60.00%
Minimum shareholders' equity			$ 1,900,000,000.0
Minimum
Debt Instrument [Line Items]
Unencumbered interest coverage ratio			2.00
10-year Note with Interest Rate of 4.09%
Debt Instrument [Line Items]
Debt amount		$ 100,000,000
Debt term		10 years
Interest rate (percent)		4.09%
8-year Note with Interest Rate of 3.91%
Debt Instrument [Line Items]
Debt amount	$ 250,000,000
Debt term	8 years
Interest rate (percent)	3.91%