Investments in Unconsolidated Entities and International Investments - European Investments (Details) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($) property $ / shares shares	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) property $ / shares shares	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) property
Investment in Unconsolidated Entities
Total revenue	$ 1,369,601	$ 1,279,842	$ 2,720,450	$ 2,575,763
Operating income before other items	657,925	626,761	1,320,648	1,247,152
Consolidated Net Income	557,505	569,480	1,076,760	1,057,790
Disposed by Sales | Shopping centers | Klepierre | Unconsolidated properties
Investment in Unconsolidated Entities
Loss on sale or disposal of assets and interests	9,300		9,300
Klepierre
Investment in Unconsolidated Entities
Investment, in equity	$ 1,542,634		$ 1,542,634		$ 1,561,112
European Joint Venture | Designer Outlet properties
Investment in Unconsolidated Entities
Number of properties | property	12		12		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 revenue	$ 351,419	381,711	$ 673,976	675,060
Operating income before other items	214,117	232,982	319,425	308,878
Consolidated Net Income	91,580	180,469	174,300	226,885
Our Share of Net Income	9,996	22,282	27,854	33,788
Amortization of Excess Investment	$ (3,301)	$ (3,237)	$ (6,554)	$ (6,032)
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	$ 24.73		$ 24.73
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