Amount of gain (loss) on conversion of debt instrument.

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This item represents the amortization of the difference between the amount at which an investment accounted for under the equity method of accounting is carried on the balance sheet and the amount of underlying equity in net assets the reporting entity has in the investee.

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This item represents the amount of the entity's share of net income loss reported by the joint ventures in which the entity has an ownership interest.

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Represents the quoted market price per share of an identified investment accounted for under the equity method of accounting for those investments in common stock for which a quoted market price is available.

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Amount of gain (loss) on disposal, exchange or revaluation of equity interests.

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The number of real estate properties owned and consolidated by entity as of the balance sheet date.

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The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

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The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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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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Number of shares of investment owned.

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

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The net result for the period of deducting operating expenses from operating revenues.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Investment in Unconsolidated Entities and International Investments - European Investments (Details) $ / shares in Units, $ in Thousands, € in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2026 USD ($) property $ / shares shares	Mar. 31, 2026 USD ($) shares	Mar. 31, 2026 EUR (€) shares	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) property $ / shares shares	Jun. 30, 2025 USD ($)	Dec. 31, 2025 property
Investment in Unconsolidated Entities
Total revenue	$ 1,790,598			$ 1,498,459	$ 3,547,691	$ 2,971,472
Operating income before other items	824,098			744,197	1,586,260	1,471,814
Consolidated net income (loss)	574,130			643,681	1,142,665	1,121,541
Gain (loss) due to disposal, exchange, or revaluation of equity interests, net	$ (11,950)			104,499	$ (18,329)	80,507
European Joint Venture \| Designer Outlet properties
Investment in Unconsolidated Entities
Number of properties \| property	12				12		12
European Joint Venture \| Designer Outlet properties \| Minimum
Investment in Unconsolidated Entities
Ownership interest (as a percent)	23.00%				23.00%
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
Total revenue	$ 418,351			396,833	$ 807,552	742,567
Operating income before other items	242,568			220,860	418,735	365,374
Consolidated net income (loss)	181,690			119,885	310,861	228,220
Our share of net income (loss)	29,757			18,477	53,525	40,911
Amortization of Excess Investment	$ (3,519)			(6,790)	$ (7,061)	(9,958)
Europe \| Designer Outlet properties
Investment in Unconsolidated Entities
Number of properties consolidated by entity \| property	8				8
Europe \| Klepierre
Investment in Unconsolidated Entities
Shares owned \| shares	59,280,541				59,280,541
Ownership interest (as a percent)	20.70%				20.70%
Quoted market price per share (in dollars per share) \| $ / shares	$ 41.73				$ 41.73
Gain (loss) due to disposal, exchange, or revaluation of equity interests, net				$ (9,600)		$ (9,600)
Europe \| Klepierre \| Exchangeable Debt
Investment in Unconsolidated Entities
Number of shares exchanged to settle the conversion \| shares		4,074,711	4,074,711
Amount of debt converted \| €			€ 110.3
Gain (loss) on acquisition of controlling interest		$ 64,300