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The net gains or losses recognized for each transaction with the acquiree that was recognized separately from the acquisition of assets and assumptions of liabilities in the business combination.

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Acquisitions: Reconciliation of Purchase Price to Fair Value (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 03, 2012	Oct. 26, 2012	Oct. 24, 2013	Jun. 04, 2014	Nov. 14, 2014
Acquisition
Less debt assumed	$ (1,414,659)	$ (257,064)	$ (420,123)
Carrying value of investment	(984,132)us-gaap_EquityMethodInvestments	(701,483)us-gaap_EquityMethodInvestments
Gain on remeasurement of assets	1,423,136	51,205	199,956
FlatIron Crossing
Acquisition
Purchase price				310,397
Less debt assumed				(114,497)
Carrying value of investment				(33,382)
Gain on remeasurement of assets				84,227
Less prior gain deferral				(26,067)
Fair value of acquired net assets (at 100% ownership)				287,442
Arrowhead Towne Center
Acquisition
Purchase price					144,400
Less debt assumed					(75,375)
Carrying value of investment					(23,597)
Gain on remeasurement of assets					115,729
Fair value of acquired net assets (at 100% ownership)					208,351
Superstition Springs Land I
Acquisition
Purchase price						46,162
Less debt assumed						(22,500)
Carrying value of investment						(32,476)
Gain on remeasurement of assets						14,864
Fair value of acquired net assets (at 100% ownership)						71,002
Cascade Mall
Acquisition
Purchase price							15,233
Carrying value of investment							(15,767)
Fair value of acquired net assets (at 100% ownership)							31,000
PPRLP Queens Portfolio
Acquisition
Purchase price								1,838,886
Less debt assumed								(672,109)
Carrying value of investment								(208,735)
Gain on remeasurement of assets								1,423,136
Fair value of acquired net assets (at 100% ownership)								$ 2,381,178