Percentage of shareholders voting stock approval required in a business acquisition.

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Represents the percentage of additional noncontrolling interest purchased in the investee accounted for under the equity method of accounting.

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No definition available.

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The net result for the period of deducting operating expenses from operating revenues reported by an equity method investment of the entity.

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No definition available.

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Number of designees.

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Represents the number of joint ventures.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date.

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No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The amount of net income (loss) reported by an equity method investment of the entity.

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Amount of revenue from sale of product and rendering of service reported by equity method investee.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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The number of real estate properties owned as of the balance sheet date.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

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The cash inflow from the sale of real estate held-for-investment and real estate joint ventures.

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- Definition

Percentage of subsidiary's or equity investee's stock owned by parent company after stock transaction.

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No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Investments in Unconsolidated Entities and International Investments - Unconsolidated Entity Transactions (Details) $ / shares in Units, $ in Thousands						1 Months Ended	3 Months Ended
	Feb. 19, 2020 USD ($) item	Feb. 09, 2020 USD ($) person property $ / shares	Oct. 16, 2019 USD ($)	Sep. 19, 2019 USD ($)	Sep. 15, 2016 item	Jan. 31, 2020 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Investment in Unconsolidated Entities
Aggregate investment in ventures							$ 1,628,343		$ 1,731,649
Share of net income, net of amortization of our excess investment excluding impairment							50,465	$ 90,444
Michigan corporation ("TCO")
Investment in Unconsolidated Entities
Percentage of ownership interest after transaction		80.00%
Shareholder voting approval (as a percent)		66.70%
Number of designees \| person		3
Share price (in dollars per share) \| $ / shares		$ 52.50
Cash purchase price for acquisition		$ 3,600,000
Hotel
Investment in Unconsolidated Entities
Ownership interests acquired (as a percent)				50.00%
Cash purchase price for acquisition				$ 12,800
Ownership interest after acquisition (as a percent)				100.00%
Simon Property Group, L.P.
Investment in Unconsolidated Entities
Aggregate investment in ventures							1,628,343		$ 1,731,649
Share of net income, net of amortization of our excess investment excluding impairment							$ 50,465	90,444
Simon Property Group, L.P. \| Michigan corporation ("TCO")
Investment in Unconsolidated Entities
Ownership interests acquired (as a percent)		100.00%
Taubman Realty Group L.P. \| Michigan corporation ("TCO")
Investment in Unconsolidated Entities
Percentage of ownership interest after transaction		20.00%
Number of designees \| person		3
Taubman Realty Group L.P. \| US and Asia
Investment in Unconsolidated Entities
Number of properties \| property		26
Forever 21
Investment in Unconsolidated Entities
Number of joint ventures \| item	2
Ownership interest (as a percent)	37.50%
Aggregate investment in ventures	$ 67,600
Shop Premium Outlets
Investment in Unconsolidated Entities
Ownership interest (as a percent)			45.00%
Contribution to form joint venture			$ 276,800
Aeropostale
Investment in Unconsolidated Entities
Number of joint ventures \| item					2
Aeropostale Retail Operations
Investment in Unconsolidated Entities
Ownership interest (as a percent)							50.00%
Additional noncontrolling interest purchased						5.05%
Purchase of equity instruments						$ 6,700
Authentic Brands Group LLC
Investment in Unconsolidated Entities
Ownership interest (as a percent)							6.77%
Additional noncontrolling interest purchased						1.37%
Purchase of equity instruments						$ 33,500
HBS
Investment in Unconsolidated Entities
Ownership interest (as a percent)							11.70%		11.70%
Share of net income, net of amortization of our excess investment excluding impairment							$ 800	(2,600)
Total revenues							31,600	33,400
Total operating income before other items							12,800	1,400
Consolidated net income							$ 7,100	(10,200)
Unconsolidated properties \| Disposed by Sales \| Residential properties
Investment in Unconsolidated Entities
Proceeds from sale or disposal of real estate assets								17,300
Gain (loss) on disposition of interest in properties								$ 15,600