Acquisitions.

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- Definition

Business Acquisition Below Market Leases.

+ Details

Name:	ddr_BusinessAcquisitionBelowMarketLeases
Namespace Prefix:	ddr
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents the business acquisition fair market value of debt assumed.

+ Details

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Namespace Prefix:	ddr
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Aggregate square feet of Company-owned gross leasable area.

+ Details

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Namespace Prefix:	ddr
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of acquired properties.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Number of shopping centers.

+ Details

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Namespace Prefix:	ddr
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage Of ownership interest held by company.

+ Details

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Namespace Prefix:	ddr
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Refinance of other mortgage.

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Repayment of mortgage note.

+ Details

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- Definition

The calculated weighted-average amortization period of a major class of finite-lived intangible assets acquired during the current period either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 44

-Subparagraph a(3)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275

+ Details

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Period Type:	duration

- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Percentage of voting equity interests acquired in the business combination.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6909870&loc=d3e1392-128463

+ Details

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Namespace Prefix:	us-gaap
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of acquisition cost of a business combination allocated to assets acquired.

+ References

+ Details

Name:	us-gaap_BusinessAcquisitionPurchasePriceAllocationAssetsAcquired
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of acquisition cost of a business combination allocated to liabilities assumed.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 37

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 98-1

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAssumed
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (g)(2)

-URI http://asc.fasb.org/extlink&oid=6909870&loc=d3e1392-128463

+ Details

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Balance Type:	credit
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Acquisitions (Details Textuals) (USD $)	1 Months Ended		3 Months Ended		9 Months Ended
Acquisitions (Details Textuals) (USD $)	Jan. 31, 2011 Property	Jan. 31, 2010 Property	Sep. 30, 2011 ReportableSegment sqft Property Store Loan	Mar. 31, 2011 Store	Sep. 30, 2011 Year Entity Property ReportableSegment sqft Store Loan
Acquisitions (Textuals) [Abstract]
Aggregate square feet of Company-owned gross leasable area			500,000		500,000
Purchase price of acquired entities			$ 110,000,000	$ 40,000,000	$ 110,000,000
Assumed debt			67,000,000		67,000,000
Fair market value of assumed debt			71,400,000		71,400,000
Percentage of ownership interest in two shopping centers				50.00%
Number of shopping centers			3	2
Repayment of Mortgage Note				29,200,000
Refinance of other mortgage				21,000,000
Percentage of ownership interest held by company				100.00%
Gain on change in control of interests				22,700,000
Below-market leases			4,500,000		4,500,000
Weighted average amortized life of market lease					14.0
Number of acquired properties	5	5
Two of Five Shopping Centers Acquired [Member]
Business Acquisition, Purchase Price Allocation
Assets acquired				$ 80,000,000