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Notes Receivable - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and other receivables outstanding | $ 49,503 | $ 42,534 | $ 56,245
Maturity Start Date | 2017-09 |  |
Maturity End Date | 2023-06 |  |
Minimum [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Interest Rate | 5.60% |  |
Maximum [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Interest Rate | 12.00% |  |

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- Definition Interest rate percentage for notes receivable. + References No definition available. + Details
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Namespace Prefix: | ddr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Notes receivable maturity end date. + References No definition available. + Details
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Namespace Prefix: | ddr_
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Balance Type: | na
Period Type: | duration

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- Definition Notes receivable maturity start date. + References No definition available. + Details
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Namespace Prefix: | ddr_
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Balance Type: | na
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services. + 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 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
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Period Type: |

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- Details
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Period Type: |