Investments in Unconsolidated Entities and International Investments - European Investments (Details) $ / shares in Units, $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2023 USD ($) property $ / shares shares	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) property	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2023 USD ($) property $ / shares shares	Dec. 31, 2022 USD ($) property	Dec. 31, 2021 USD ($) property	Jan. 01, 2021 USD ($)
Investment in Unconsolidated Entities
Total assets	$ 34,283,495				$ 33,011,274					$ 34,283,495	$ 33,011,274
Total liabilities	30,595,897				29,187,383					30,595,897	29,187,383
Noncontrolling interests	468,815				473,128					468,815	473,128
Total revenue	1,527,438	$ 1,410,948	$ 1,369,601	$ 1,350,849	1,399,898	$ 1,315,786	$ 1,279,842	$ 1,295,922		5,658,836	5,291,447	$ 5,116,789
Operating income before other items	792,139	694,234	657,925	662,723	684,205	652,196	626,761	620,391		2,807,022	2,583,553	2,413,190
Consolidated Net Income	859,496	$ 680,762	$ 557,505	$ 519,255	772,748	$ 621,847	$ 569,480	$ 488,310		2,617,018	2,452,385	$ 2,568,707
Klepierre
Investment in Unconsolidated Entities
Investment, in equity	$ 1,527,872				$ 1,561,112					$ 1,527,872	$ 1,561,112
European Joint Venture | Designer Outlet properties
Investment in Unconsolidated Entities
Number of properties | property	12				11					12	11	11
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 assets	$ 16,114,513				$ 16,016,137					$ 16,114,513	$ 16,016,137
Total liabilities	10,282,111				10,074,502					10,282,111	10,074,502
Noncontrolling interests	$ 1,255,479				1,226,734					1,255,479	1,226,734
Total revenue										1,359,246	1,308,409	$ 1,240,277
Operating income before other items										618,260	590,829	380,470
Consolidated Net Income										347,311	581,075	848,104
Our Share of Net Income										64,805	116,084	164,575
Amortization of Excess Investment										$ (17,658)	(13,937)	(19,444)
Europe | Outlet Center In Ochtrup
Investment in Unconsolidated Entities
Mortgage debt assumed													$ 47,100
Investment, in equity													$ 48,700
Non-cash gain on remeasurement of equity interest to fair value									$ 3,700
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	$ 27.24									$ 27.24
Loss (gain) on sale or disposal of assets and interests										$ 11,200	(1,300)	(1,200)
Non cash gain due to setup of tax basis of assets												$ 118,400
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	$ 140,800