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Investments in Unconsolidated Joint Ventures - Narrative (Details) ft² in Thousands, $ in Thousands |  |  |  |  |  |  |  | 3 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 28, 2016 USD ($) | Mar. 01, 2016 USD ($) ft² | Jan. 14, 2016 USD ($) ft² | Jan. 06, 2016 USD ($) ft² | Oct. 30, 2015 USD ($) ft² | Apr. 30, 2015 USD ($) store | Feb. 17, 2015 USD ($) ft² | Mar. 31, 2016 USD ($)
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |
Gain on remeasurement, sale or write down of assets, net |  |  |  |  |  |  |  | $ (5)
PPR Portfolio |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |
Purchase price paid through assumption of debt by the Company |  |  |  |  | $ 713,000 |  |  |
Ownership interest sold (as a percent) |  |  |  |  | 40.00% |  |  |
Proceeds from sale |  |  |  |  | $ 1,258,643 |  |  |
Gain on remeasurement, sale or write down of assets, net |  |  |  |  | 311,194 |  |  |
Proceeds from Divestiture of Business, Cash |  |  |  |  | $ 545,643 |  |  |
PPR Portfolio | Lakewood Center |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |
Property area (in square feet) | ft² |  |  |  |  | 2,075 |  |  |
PPR Portfolio | Los Cerritos Center |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |
Property area (in square feet) | ft² |  |  |  |  | 1,296 |  |  |
PPR Portfolio | South Plains Mall |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |
Property area (in square feet) | ft² |  |  |  |  | 1,127 |  |  |
PPR Portfolio | Washington Square |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |
Property area (in square feet) | ft² |  |  |  |  | 1,442 |  |  |
Arrowhead Towne Center |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |
Property area (in square feet) | ft² |  |  |  | 1,197 |  |  |  |
Ownership interest sold (as a percent) |  |  |  | 40.00% |  |  |  | 40.00%
Proceeds from sale |  |  |  | $ 289,496 |  |  |  |
Gain on remeasurement, sale or write down of assets, net |  |  |  |  |  |  |  | $ 104,293
Proceeds from Divestiture of Business, Cash |  |  |  | 129,496 |  |  |  |
Proceeds from Divestiture of Business, Assumption of Debt |  |  |  | $ 160,000 |  |  |  |
MAC Heitman Portfolio |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |
Ownership interest sold (as a percent) |  |  | 49.00% |  |  |  |  |
Proceeds from sale |  |  | $ 771,478 |  |  |  |  |
Gain on remeasurement, sale or write down of assets, net |  |  | 340,741 |  |  |  |  |
Proceeds from Divestiture of Business, Cash |  |  | 478,608 |  |  |  |  |
Proceeds from Divestiture of Business, Assumption of Debt |  |  | $ 292,870 |  |  |  |  |
MAC Heitman Portfolio | Deptford Mall |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |
Property area (in square feet) | ft² |  |  | 1,040 |  |  |  |  |
MAC Heitman Portfolio | FlatIron Crossing |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |
Property area (in square feet) | ft² |  |  | 1,432 |  |  |  |  |
MAC Heitman Portfolio | Twenty Ninth Street |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |
Property area (in square feet) | ft² |  |  | 852 |  |  |  |  |
Inland Center |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |
Additional ownership interest acquired (as a percent) |  |  |  |  |  |  | 50.00% |
Property area (in square feet) | ft² |  |  |  |  |  |  | 867 |
Purchase price |  |  |  |  |  |  | $ 51,250 |
Purchase price funded by cash payment on acquisition |  |  |  |  |  |  | 26,250 |
Debt repaid |  |  |  |  |  |  | 50 |
Purchase price paid through assumption of debt by the Company |  |  |  |  |  |  | $ 25,000 |
Sears Locations |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |
Purchase price |  |  |  |  |  | $ 150,000 |  |
Number of stores | store |  |  |  |  |  | 9 |  |
Ownership percentage acquired |  |  |  |  |  | 50.00% |  |
Country Club Plaza |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |
Property area (in square feet) | ft² |  | 1,300 |  |  |  |  |  |
Purchase price |  | $ 660,000 |  |  |  |  |  |
Purchase price paid through assumption of debt by the Company | $ 320,000 | $ 330,000 |  |  |  |  |  |
Effective interest rate (as a percent) | 3.88% |  |  |  |  |  |  |

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