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Property, net - Narrative (Details) $ in Thousands |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
May 31, 2016 USD ($) | Apr. 13, 2016 USD ($) | Jan. 06, 2016 | Nov. 19, 2015 USD ($) | Oct. 30, 2015 | Aug. 28, 2014 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) property | Dec. 31, 2013 USD ($)
Property, Plant and Equipment [Abstract] |  |  |  |  |  |  |  |  |  |
Depreciation expense |  |  |  |  |  |  | $ 277,270 | $ 354,977 | $ 289,178 |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Gain (loss) on sale of assets |  |  |  |  |  |  | (375) | 9,850 | 3,643 |
Gain (loss) on sale or write down of assets, net |  |  |  |  |  |  | 415,348 | 378,248 | $ 73,440 |
Gain on land sales |  |  |  |  |  |  | 4,546 |  |  |
Contingent settlement payment |  |  |  |  |  |  | 12,180 |  |  |
Write-off of development cost |  |  |  |  |  |  | 1,538 | 182 |  |
Impairment of real estate |  |  |  |  |  |  |  | 10,633 |  |
Flagstaff Mall |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Gain (loss) on sale or write down of assets, net |  |  |  |  |  |  | (39,671) |  |  |
Mervyn's |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Number of properties | property |  |  |  |  |  |  |  |  | 3 |
Arrowhead Towne Center |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Gain (loss) on sale of assets |  |  |  |  |  |  | $ 101,629 |  |  |
Percentage of ownership interest sold |  |  | 40.00% |  |  |  |  |  |  |
PPR Portfolio |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Percentage of ownership interest sold |  |  |  |  | 40.00% |  | 40.00% |  |  |
Gain on land sales |  |  |  |  |  |  |  | 1,807 |  |
Gain on sale of assets |  |  |  |  |  |  |  | $ 2,336 |  |
Capitola Mall |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Gain (loss) on sale or write down of assets, net |  |  |  |  |  |  | $ 24,894 |  |  |
Gain on disposal |  | $ 24,894 |  |  |  |  |  |  |  |
Mervyn's (former locations) |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Gain (loss) on sale or write down of assets, net |  |  |  |  |  |  | $ (3,066) |  |  |
Gain on disposal | $ (3,066) |  |  |  |  |  |  |  |  |
Panorama Mall |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Gain on disposal |  |  |  | $ 73,726 |  |  |  |  |  |
Wilshire Boulevard |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Gain (loss) on sale of assets |  |  |  |  |  | $ 9,033 |  |  |  |
Percentage of ownership interest sold |  |  |  |  |  | 30.00% |  |  |  |
Gain on sale of assets |  |  |  |  |  |  |  |  | $ 9,033 |
Rotterdam Square, Somersville Towne Center, Lake Square Mall, South Towne Center, Camelback Colonnade and four former Meryvns' stores |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Gain (loss) on sale of assets |  |  |  |  |  |  |  |  | $ 144,927 |
Gain (loss) on sale or write down of assets, net |  |  |  |  |  |  |  |  |  | $ (41,216)
Gain on sale of assets |  |  |  |  |  |  |  |  |  | 1,257
Loss on write-off of development costs |  |  |  |  |  |  |  |  |  | $ (40,561)

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