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Subsequent Events - Additional Information (Detail) (USD $) |  |  | 1 Months Ended
--- | --- | --- | ---
Sep. 30, 2014 | Dec. 31, 2013 | Oct. 31, 2014 BRE DDR Retail Holdings III [Member] Subsequent Events [Member] ShoppingCenter sqft
Subsequent Event [Line Items] |  |  |
Number of shopping centers |  |  | 71
Number of square feet of gross leasable area of shopping centers |  |  | 11,400,000
Purchase price cost |  |  | $ 1,930,000,000
Mortgage debt assumed |  |  | 436,800,000
New mortgage debt | 400,000,000 | 400,000,000 | 800,000,000
Ownership interest of joint venture partner |  |  | 95.00%
Remaining ownership interest of affiliate partner |  |  | 5.00%
Common equity investment in joint venture |  |  | 19,600,000
Preferred equity investments with affiliates of Blackstone |  |  | $ 300,000,000
Preferred stock dividend rate |  |  | 8.50%

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