Investments in Unconsolidated Entities and International Investments - Asian Joint Ventures (Details) $ in Millions	Mar. 31, 2026 USD ($) property	Dec. 31, 2025 USD ($)
Operating Joint Venture Properties \| Malls \| Minimum
Investment in Unconsolidated Entities
Ownership percentage	17.00%
Operating Joint Venture Properties \| Malls \| Maximum
Investment in Unconsolidated Entities
Ownership percentage	49.00%
Japan \| Mitsubishi Estate Co., Ltd. \| Premium Outlets
Investment in Unconsolidated Entities
Ownership percentage	40.00%	40.00%
Our net Investment in unconsolidated entities, at equity \| $	$ 251.8	$ 245.0
South Korea \| Shinsegae International Co \| Premium Outlets
Investment in Unconsolidated Entities
Ownership percentage	50.00%	50.00%
Our net Investment in unconsolidated entities, at equity \| $	$ 221.4	$ 216.8
South Korea \| Operating Joint Venture Properties \| Malls
Investment in Unconsolidated Entities
Number of properties \| property	2
China \| Operating Joint Venture Properties \| Malls
Investment in Unconsolidated Entities
Number of properties \| property	2

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

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