Investments in Unconsolidated Entities and International Investments - European Investments (Details) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($) property $ / shares shares	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) property $ / shares shares	Sep. 30, 2023 USD ($)	Dec. 31, 2023 property
Investment in Unconsolidated Entities
Total revenue	$ 1,480,710	$ 1,410,948	$ 4,381,566	$ 4,131,398
Operating income before other items	767,769	694,234	2,257,050	2,014,883
Consolidated net income (loss)	546,671	680,762	1,957,262	1,757,522
Klepierre | Disposed by Sales | Shopping centers | Unconsolidated properties
Investment in Unconsolidated Entities
Loss on disposition of interest in properties	$ 2,700	9,300	$ 6,000	9,300
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	$ 349,975	321,558	$ 1,040,620	995,534
Operating income before other items	162,437	131,041	485,937	450,466
Consolidated net income (loss)	124,455	94,035	319,002	268,335
Our share of net income (loss)	13,900	25,422	56,156	53,276
Amortization of Excess Investment	$ (3,309)	$ (3,300)	$ (11,857)	$ (9,855)
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	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	$ 32.86		$ 32.86