Changes in debt instrument basis spread on variable rate.

No definition available.

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

- Definition

Extended additional maturity period.

+ References

No definition available.

+ Details

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

- Definition

Extended borrower option.

+ References

No definition available.

+ Details

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Namespace Prefix:	ddr_
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Balance Type:	na
Period Type:	duration

- Definition

Date to which the revolving credit facility can be extended.

+ References

No definition available.

+ Details

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

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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 210.5-02.22(a)(2))

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

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ 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(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 22

-Subparagraph b

-Article 5

+ Details

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

- 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 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

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

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

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

- Details

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- Details

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Namespace Prefix:
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- Details

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Subsequent Events - Additional Information (Detail) (USD $)	3 Months Ended		1 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Apr. 30, 2015
Subsequent Event [Line Items]
Repayments of term loan	$ 492,076,000us-gaap_RepaymentsOfLongTermDebt	$ 49,932,000us-gaap_RepaymentsOfLongTermDebt
Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Specified spread line of credit facility LIBOR rate	1.15%
Revolving Credit Facility [Member] \| Unsecured revolving credit facility with PNC Bank National Association [Member]
Subsequent Event [Line Items]
Unsecured revolving credit facility	65,000,000
Subsequent Event [Member] \| JP Morgan Credit Facility and PNC Credit Facility [Member]
Subsequent Event [Line Items]
Specified spread line of credit facility LIBOR rate			1.00%
Decrease in basis point			0.15%
Subsequent Event [Member] \| Unsecured term loan with Wells Fargo Bank National Association and PNC Bank National Association [Member]
Subsequent Event [Line Items]
Specified spread line of credit facility LIBOR rate			1.10%
Unsecured term loan, borrowing capacity			400,000,000
Unsecured term loan, maturity date			Apr. 30, 2017
Extension maturity period			up to three additional one-year periods
Subsequent Event [Member] \| Revolving Credit Facility [Member] \| JP Morgan Credit Facility [Member]
Subsequent Event [Line Items]
Extended Maturity Date			Jun. 30, 2019
Extended borrower option			two six-month borrower options to extend
Subsequent Event [Member] \| Revolving Credit Facility [Member] \| Unsecured revolving credit facility with PNC Bank National Association [Member]
Subsequent Event [Line Items]
Unsecured revolving credit facility			50,000,000
Subsequent Event [Member] \| Revolving Credit Facility [Member] \| Secured Term Loan with Key Bank National Association [Member]
Subsequent Event [Line Items]
Repayments of term loan			100,000,000