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Revolving Credit Facilities and Term Loans - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2013
Unsecured revolving credit facility arranged by JP Morgan Securities, LLC and Wells Fargo Securities, LLC [Member]
Debt Instrument [Line Items]
Unsecured revolving credit facility borrowing capacity	$ 750,000,000
Accordion feature	1,250,000,000
Line of credit facility competitive bid option on periodic interest rates	Up to 50% of the facility
Facility fee	0.30%
Carrying Value	190,500,000
Unsecured revolving credit facility with PNC Bank National Association [Member]
Debt Instrument [Line Items]
Carrying Value	0
Unsecured revolving credit facility	65,000,000
Revolving Credit Facilities [Member]
Debt Instrument [Line Items]
Specified spread line of credit facility LIBOR rate	1.40%
Specified spread line of credit facility prime rate	0.40%
Covenant compliance	The Company was in compliance with these covenants at March 31, 2013.
Secured Term Loan with Key Bank National Association [Member]
Debt Instrument [Line Items]
Term loan extension maturity period	1 year
Covenant compliance	The Company was in compliance with these covenants at March 31, 2013
Extended Maturity Date	Apr. 30, 2018
Specified spread term loan facility LIBOR rate	1.55%
Euro-denominated borrowings [Member]
Debt Instrument [Line Items]
Carrying Value	4,700,000
Canadian Borrowings [Member]
Debt Instrument [Line Items]
Carrying Value	$ 25,700,000

X

- Definition

The increased amount of the facility the Company may expand to provided that new or existing lenders agree to the existing terms of the facility and increase their commitment level.

+ References

No definition available.

+ Details

Name:	ddr_AccordionFeature
Namespace Prefix:	ddr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Extended Additional Maturity Period

+ References

No definition available.

+ Details

Name:	ddr_ExtendedAdditionalMaturityPeriod
Namespace Prefix:	ddr_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Extended Maturity Date

+ References

No definition available.

+ Details

Name:	ddr_ExtendedMaturityDate
Namespace Prefix:	ddr_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The facility fee charged under the unsecured revolving credit facility.

+ References

No definition available.

+ Details

Name:	ddr_FacilityFeeUnsecuredCreditFacility
Namespace Prefix:	ddr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line of credit facility competitive bid option on periodic interest rates.

+ References

No definition available.

+ Details

Name:	ddr_LineOfCreditFacilityCompetitiveBidOptionOnPeriodicInterestRates
Namespace Prefix:	ddr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The spread for LIBOR borrowings based on the Company's current debt rating.

+ References

No definition available.

+ Details

Name:	ddr_SpecifiedSpreadLineOfCreditFacilityLiborRate
Namespace Prefix:	ddr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The spread for prime rate borrowings based on the Company's current debt rating.

+ References

No definition available.

+ Details

Name:	ddr_SpecifiedSpreadLineOfCreditFacilityPrimeRate
Namespace Prefix:	ddr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The spread for LIBOR borrowings based on the Company's current debt rating.

+ References

No definition available.

+ Details

Name:	ddr_SpecifiedSpreadTermLoanFacilityLiborRate
Namespace Prefix:	ddr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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

X

- Definition

Identification of whether the entity has been in compliance with any credit facility debt covenants during the period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-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 SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ 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 210.5-02.19(b),22(b))

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



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-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 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

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



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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