Cash At Consolidated Joint Ventures

No definition available.

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Period Type:	instant

- Definition

Joint Venture Acquired Ownership Percentage

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Joint Venture Ownership Percentage

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Number Of Joint Ventures

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Payments To Acquire Real Estate Amount Representing In-Place Mortgage Financing

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Payments To Acquire Real Estate Cash Paid

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Percentage Of Share Of In-Place Mortgage Financing

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Provision For Doubtful Accounts Receivable Included In Operating, Maintenance And Management Expenses

+ References

No definition available.

+ Details

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- Definition

For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5074-111524

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.4)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Balance Type:	credit
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- Definition

The maximum number of shares authorized for issuance under the deferred compensation arrangement as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

+ Details

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Balance Type:	credit
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- Definition

Useful life on which depreciation was computed for entities with a substantial portion of business acquiring and holding investment real estate, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 970

-SubTopic 360

-Section S99

-Paragraph 1

-Subparagraph (SX 210.12-28)

-URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 10

-Section S99

-Paragraph 6

-Subparagraph (SX 210.5-04.(c) Schedule III)

-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 28

-Article 12

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph c

-Subparagraph Schedule III

-Article 5

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- Definition

The highest quantity of shares an employee can purchase under the plan per period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (bb)

-URI http://asc.fasb.org/extlink&oid=28200181&loc=d3e5710-111685

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Period Type:	instant

- Definition

The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position.

+ References

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended			0 Months Ended	1 Months Ended	0 Months Ended	1 Months Ended
	Dec. 31, 2014 property	Dec. 31, 2013	Dec. 31, 2012	Jan. 23, 2015	May 30, 2013 item	Oct. 31, 2013	Oct. 31, 2013	Oct. 09, 2012
Summary Of Significant Accounting Policies [Line Items]
Number of properties	59us-gaap_NumberOfRealEstateProperties
Purchase price of acquired property	$ 38,861,000us-gaap_PaymentsToAcquireRealEstate	$ 32,818,000us-gaap_PaymentsToAcquireRealEstate
Depreciation expense	35,000,000us-gaap_Depreciation	41,100,000us-gaap_Depreciation	40,000,000us-gaap_Depreciation
Cash at consolidated joint ventures	800,000cdr_CashAtConsolidatedJointVentures	1,500,000cdr_CashAtConsolidatedJointVentures
Allowance for doubtful accounts receivable	4,300,000	5,100,000
Provision for doubtful accounts included in operating, maintenance and management expenses	1,900,000	1,800,000	1,900,000
2012 Stock Incentive Plan [Member]
Summary Of Significant Accounting Policies [Line Items]
Maximum number of shares may be issued under the plan	4,500,000
Maximum number of shares to be granted per year to a participant	500,000
General Partner [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of properties	2
New London Joint Venture [Member] \| Subsequent Event [Member]
Summary Of Significant Accounting Policies [Line Items]
Acquired ownership percentage in joint venture				60.00%
RioCan Real Estate Investment Trust [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage								20.00%
Homburg Joint Venture [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage	20.00%
Number of properties	9
Variable Interest Entity, Primary Beneficiary [Member] \| Other Ownership Interest [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage	60.00%
VIE real estate owned carrying value	40,500,000
VIE mortgage payable	0
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Real estate investments useful life	3 years
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Real estate investments useful life	40 years
New London Mall And San Souci Plaza [Member] \| General Partner [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage	40.00%
New London Mall [Member] \| Subsequent Event [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage				100.00%
Purchase price of acquired property				27,300,000
Amount of purchase price paid in cash				10,900,000
Amount of purchase price representing 60% share of in-place mortgage financing				16,400,000
Percentage of share of in-place mortgage financing				60.00%
Heritage Crossings And Upland Square Projects [Member] \| Other Ownership Interest [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of joint ventures					2
Joint venture ownership percentage					60.00%
Upland Square [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage	60.00%
Acquired ownership percentage in joint venture						40.00%	40.00%
Investments in and advances to unconsolidated joint ventures						$ 1,600,000