Mortgage, Weighted Average Interest Rate

Carrying Value

$ 29,009us-gaap_LineOfCredit

$ 29,133us-gaap_LineOfCredit

Unsecured Term Loan

350,000us-gaap_UnsecuredLongTermDebt

Secured Term Loan

2,089,805us-gaap_SecuredDebt

2,161,421us-gaap_SecuredDebt

Secured debt

1,689,805us-gaap_NotesAndLoansPayable

1,761,421us-gaap_NotesAndLoansPayable

5.30%us-gaap_DebtWeightedAverageInterestRate

Unsecured revolving credit facility arranged by JP Morgan Securities, LLC and Wells Fargo Securities, LLC [Member]

Weighted-Average Interest Rate

Carrying Value

29,000us-gaap_LineOfCredit
/ us-gaap_LongtermDebtTypeAxis
= ddr_UnsecuredRevolvingCreditFacilityWithJpMorganChaseBankNaAndWellsFargoBankNaMember

29,100us-gaap_LineOfCredit
/ us-gaap_LongtermDebtTypeAxis
= ddr_UnsecuredRevolvingCreditFacilityWithJpMorganChaseBankNaAndWellsFargoBankNaMember

2.20%us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
/ us-gaap_LongtermDebtTypeAxis
= ddr_UnsecuredRevolvingCreditFacilityWithJpMorganChaseBankNaAndWellsFargoBankNaMember

Lines of credit maturity date

April 2017

Unsecured revolving credit facility with PNC Bank National Association [Member]

Lines of credit maturity date

Carrying Value

0us-gaap_LineOfCredit
/ us-gaap_LongtermDebtTypeAxis
= ddr_UnsecuredRevolvingCreditFacilityWithPncBankNaMember

April 2017

Unsecured Term Loan - Tranche 1 [Member]

Unsecured Term Loan- Tranche 2 [Member]

Unsecured Term Loan

50,000us-gaap_UnsecuredLongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= ddr_UnsecuredTermLoanTrancheOneMember

Term Loan interest rates

2.10%us-gaap_LongtermDebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= ddr_UnsecuredTermLoanTrancheOneMember

Term Loan maturity date

January 2017

Secured Term Loan with Key Bank National Association [Member]

Unsecured Term Loan

300,000us-gaap_UnsecuredLongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= ddr_UnsecuredTermLoanTrancheTwoMember

Term Loan interest rates

3.20%us-gaap_LongtermDebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= ddr_UnsecuredTermLoanTrancheTwoMember

Term Loan maturity date

January 2019

Mortgage indebtedness-Fixed Rate [Member]

Secured Term Loan

400,000us-gaap_SecuredDebt
/ us-gaap_LongtermDebtTypeAxis
= ddr_SecuredTermLoanWithKeyBankNMember

Term Loan interest rates

1.60%us-gaap_LongtermDebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= ddr_SecuredTermLoanWithKeyBankNMember

1.80%us-gaap_LongtermDebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= ddr_SecuredTermLoanWithKeyBankNMember

Term Loan maturity date

April 2017

Mortgage, Weighted Average Interest Rate

Secured debt

1,590,600us-gaap_NotesAndLoansPayable
/ us-gaap_LongtermDebtTypeAxis
= ddr_MortgageAndOtherSecuredIndebtednessFixedRateMember

1,663,700us-gaap_NotesAndLoansPayable
/ us-gaap_LongtermDebtTypeAxis
= ddr_MortgageAndOtherSecuredIndebtednessFixedRateMember

5.40%us-gaap_DebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= ddr_MortgageAndOtherSecuredIndebtednessFixedRateMember

5.20%us-gaap_DebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= ddr_MortgageAndOtherSecuredIndebtednessFixedRateMember

Mortgage Maturity Date, Start

September 2015

Mortgage Maturity Date, End

February 2022

Mortgage indebtedness-Variable Rate [Member]

Mortgage, Weighted Average Interest Rate

Secured debt

$ 99,200us-gaap_NotesAndLoansPayable
/ us-gaap_LongtermDebtTypeAxis
= ddr_MortgageAndOtherSecuredIndebtednessVariableRateMember

$ 97,700us-gaap_NotesAndLoansPayable
/ us-gaap_LongtermDebtTypeAxis
= ddr_MortgageAndOtherSecuredIndebtednessVariableRateMember

1.40%us-gaap_DebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= ddr_MortgageAndOtherSecuredIndebtednessVariableRateMember

1.80%us-gaap_DebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= ddr_MortgageAndOtherSecuredIndebtednessVariableRateMember

Mortgage Maturity Date, Start

March 2016

Mortgage Maturity Date, End

December 2037

Debt instrument maturity date range at end.

No definition available.

Name:	ddr_DebtInstrumentMaturityDateRangeAtEnd
Namespace Prefix:	ddr_
Data Type:	us-types:dateStringItemType
Balance Type:	na
Period Type:	duration

Debt instrument maturity date range at start.

No definition available.

Name:	ddr_DebtInstrumentMaturityDateRangeAtStart
Namespace Prefix:	ddr_
Data Type:	us-types:dateStringItemType
Balance Type:	na
Period Type:	duration

Date when the term loan is scheduled to be fully repaid.

No definition available.

Name:	ddr_DebtInstrumentMaturityDates
Namespace Prefix:	ddr_
Data Type:	us-types:dateStringItemType
Balance Type:	na
Period Type:	duration

Date when the revolving credit facility is scheduled to be fully repaid.

No definition available.

Name:	ddr_LineOfCreditFacilityScheduledMaturityDate
Namespace Prefix:	ddr_
Data Type:	us-types:dateStringItemType
Balance Type:	na
Period Type:	duration

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

Weighted average interest rate of debt outstanding.

No definition available.

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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

The effective interest rate at the end of the reporting period.

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

Name:	us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Weighted average interest rate of long-term debt outstanding.

No definition available.

Name:	us-gaap_LongtermDebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Including the current and noncurrent portions, carrying value as of the balance sheet date of all notes and loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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

Carrying value as of the balance sheet date of uncollateralized debt obligation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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)

-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

-Article 5

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

Name:	us-gaap_LongtermDebtTypeAxis=ddr_MortgageAndOtherSecuredIndebtednessFixedRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_LongtermDebtTypeAxis=ddr_MortgageAndOtherSecuredIndebtednessVariableRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_LongtermDebtTypeAxis=ddr_SecuredTermLoanWithKeyBankNMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_LongtermDebtTypeAxis=ddr_UnsecuredRevolvingCreditFacilityWithJpMorganChaseBankNaAndWellsFargoBankNaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_LongtermDebtTypeAxis=ddr_UnsecuredRevolvingCreditFacilityWithPncBankNaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_LongtermDebtTypeAxis=ddr_UnsecuredTermLoanTrancheOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: