In a business combination achieved in stages, this element represents the amount of gain or loss recognized by the entity as a result of re-measuring to fair value the equity interest in the acquiree it held before the business combination. Also includes the difference between the carrying value and the sales price for consolidated investment property and equity method investments and impairment, net.

No definition available.

Investments in Unconsolidated Entities and International Investments - European Investments (Details) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020 USD ($) property $ / shares shares	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) property $ / shares shares	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) property
Investment in Unconsolidated Entities
Income from unconsolidated entities	$ 44,322	$ 106,542	$ 94,787	$ 196,986
Total revenue	1,062,041	1,397,186	2,415,401	2,850,019
Operating Income	450,868	680,631	1,105,737	1,425,653
Consolidated Net Income	290,548	572,102	795,952	1,204,048
Loss on disposal of certain assets and related impairment	7,845	(2,681)	6,883	(2,681)
Noncontrolling interests	$ 306,099		$ 306,099		$ 384,852
European Joint Venture \| Designer Outlet properties
Investment in Unconsolidated Entities
Number of properties \| property	10		10		9
Number of properties consolidated by entity \| property			6		6
European Joint Venture \| Designer Outlet properties \| Minimum
Investment in Unconsolidated Entities
Ownership interest (as a percent)	45.00%		45.00%
European Joint Venture \| Designer Outlet properties \| Maximum
Investment in Unconsolidated Entities
Ownership interest (as a percent)	94.00%		94.00%
European Property Management and Development \| Designer Outlet properties
Investment in Unconsolidated Entities
Ownership interest (as a percent)	50.00%		50.00%
Europe \| Klepierre
Investment in Unconsolidated Entities
Shares owned \| shares	63,924,148		63,924,148
Ownership interest (as a percent)	22.40%		22.40%
Quoted market price per share (in dollars per share) \| $ / shares	$ 19.92		$ 19.92
Income from unconsolidated entities	$ 2,200	$ 21,200	$ 9,400	39,000
Total revenue			672,300	760,200
Operating Income			199,900	318,500
Consolidated Net Income			152,600	276,600
Loss on disposal of certain assets and related impairment			$ 7,800
Europe \| Klepierre \| Disposed by Sales \| Shopping centers
Investment in Unconsolidated Entities
Gain (loss) on sale or disposal of assets and interests in unconsolidated entities				$ 2,700
Europe \| Value Retail PLC
Investment in Unconsolidated Entities
Number of luxury outlets owned and operated \| property	9		9
Number of outlets in which the entity has a minority direct ownership \| property	3		3
Europe \| Value Retail PLC \| Deferred costs and other assets
Investment in Unconsolidated Entities
Value of equity instruments	$ 140,800		$ 140,800		$ 140,800