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Investments in and Advances to Joint Ventures - Additional Information (Detail) |  | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 USD ($) ShoppingCenter Assets | Dec. 31, 2017 USD ($) Property Investment ShoppingCenter Assets | Dec. 31, 2016 USD ($) Property | Dec. 31, 2015 USD ($) Property
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Preferred investment interest valuation allowance | $ 61,000,000 | $ 61,000,000 |  |
Dividend, aggregate amount |  | 6,300,000 |  |
DDR interest |  |  | 25.00% |
Contribution |  | 69,240,000 | $ 6,849,000 | $ 6,142,000
Gain (loss) on change in control of interests |  | 368,000 | (1,087,000) | 7,772,000
Gain on sale of properties |  | $ 161,164,000 | $ 73,386,000 | $ 167,571,000
Property Management Company [Member] |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Percentage of ownership acquired/ transferred |  |  |  | 50.00%
Gain (loss) on change in control of interests |  |  |  | $ (6,500,000)
Joint Venture Partner [Member] |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Number of properties sold | Property |  |  | 10 |
BRE DDR Joint Ventures [Member] |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Number of unconsolidated investments | Investment |  | 2 |  |
Maximum preferred investment fixed distribution deferral | 23.50% | 23.50% |  |
Redemption of preferred equity in full or in part at partners option |  | during the first three years |  |
Redemption of preferred investment in full at company option |  | after seven years |  |
Dividend, cash interest rate |  | 6.50% |  |
Dividend, accrued PIK interest rate |  | 2.00% |  |
BRE DDR Joint Ventures [Member] | Preferred Equity Fixed Dividend Rate [Member] |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Preferred equity fixed dividend rate per annum |  | 8.50% |  |
BRE DDR III [Member] |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Ownership interest of joint venture partner | 95.00% | 95.00% |  |
Ownership interest in joint venture | 5.00% | 5.00% |  |
Redemption of preferred investment in full at company option year |  | 2021 |  |
Preferred investment interest valuation allowance | $ 50,000,000 | $ 50,000,000 |  |
DDR interest | 5.00% | 5.00% |  |
BRE DDR III [Member] | Preferred Shares |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Remaining net asset sale proceeds | 52.00% |  |  |
BRE DDR IV [Member] |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Ownership interest of joint venture partner | 95.00% | 95.00% |  |
Ownership interest in joint venture | 5.00% | 5.00% |  |
Redemption of preferred investment in full at company option year |  | 2022 |  |
Minimum net asset sales threshold payable | $ 4,900,000 | $ 4,900,000 |  |
Preferred investment interest valuation allowance | $ 11,000,000 | $ 11,000,000 |  |
DDR interest | 5.00% | 5.00% |  |
BRE DDR IV [Member] | Preferred Shares |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Number of assets with nominal interest | ShoppingCenter | 3 | 3 |  |
Minimum net asset sales threshold payable | $ 1,100,000 | $ 1,100,000 |  |
DDRM Properties [Member] |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Properties Owned | Assets | 52 | 52 |  |
Transaction Value at 100% |  | $ 1,050,000,000 |  |
Percentage of ownership acquired/ transferred |  | 80.00% |  |
DDR interest | 20.00% | 20.00% |  |
New financing 100% | $ 706,700,000 | $ 706,700,000 |  |
DDR pro rata share new financing | $ 141,300,000 | $ 141,300,000 |  |
Debt instrument maturity date |  | 2022-07 |  |
Contribution |  | $ 46,900,000 |  |
DDR Domestic Retail Fund I [Member] |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Properties Owned | Assets | 3 | 3 |  |
DDR interest | 20.00% | 20.00% |  |
Aggregate book value | $ 74,000,000 | $ 74,000,000 |  |
Pro rata Aggregate book value | $ 14,800,000 | $ 14,800,000 |  |
Shopping Centers and Land [Member] |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Number of properties sold | Property |  | 15 | 17 | 16
Proceeds from sale of joint venture assets |  | $ 545,600,000 | $ 214,600,000 | $ 289,700,000
Gain on sale of joint venture assets |  | $ 5,700,000 | $ 13,800,000 | $ 4,000,000
Shopping Center [Member] |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |
Number of assets sold to former joint venture partner | Property |  |  |  | 2
Aggregate sales price |  |  |  | $ 112,300,000
Gain on sale of properties |  |  |  | $ 59,800,000

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