Acquisitions - Allocation of Fair Value (Details) - USD ($) $ in Thousands	Feb. 17, 2015	Nov. 14, 2014	Jun. 04, 2014
Cascade Mall
Acquisition
Property			$ 28,924
Deferred charges			6,660
Other assets			202
Total assets acquired			35,786
Other accrued liabilities			4,786
Total liabilities assumed			4,786
Fair value of acquired net assets (at 100% ownership)			$ 31,000
PPRLP Queens Portfolio
Acquisition
Cash and cash equivalents		$ 28,890
Restricted cash		5,113
Tenant receivables		5,438
Property		3,711,819
Deferred charges		155,892
Other assets		127,244
Total assets acquired		4,034,396
Accounts payable		5,669
Due to affiliates		2,680
Mortgage note payable		1,414,659
Other accrued liabilities		230,210
Total liabilities assumed		1,653,218
Fair value of acquired net assets (at 100% ownership)		$ 2,381,178
Inland Center
Acquisition
Property	$ 91,871
Deferred charges	9,752
Other assets	5,782
Total assets acquired	107,405
Mortgage note payable	50,000
Other accrued liabilities	4,905
Total liabilities assumed	54,905
Fair value of acquired net assets (at 100% ownership)	$ 52,500