Investments in Unconsolidated Entities and International Investments - European Investments (Details) $ / shares in Units, $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2022 USD ($) property $ / shares shares	Dec. 31, 2021 USD ($) property	Sep. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Sep. 30, 2022 USD ($) property $ / shares shares	Sep. 30, 2021 USD ($)	Jan. 01, 2021 USD ($)
Investment in Unconsolidated Entities
Our share of net income, net of amortization of our excess investment	$ 163,086		$ 198,524		$ 434,343	$ 562,138
Total revenue	1,315,786		1,296,554		3,891,550	3,790,652
Operating Income	652,196		612,324		1,899,348	1,821,658
Consolidated Net Income	621,847		778,648		1,679,637	1,994,977
Disposed by Sales | Shopping centers | Klepierre | Unconsolidated properties
Investment in Unconsolidated Entities
Gain (loss) on sale or disposal of assets and interests in unconsolidated entities	(3,300)				(3,300)
Disposed by Sales | Retail properties | Unconsolidated properties
Investment in Unconsolidated Entities
Gain (loss) on sale or disposal of assets and interests in unconsolidated entities		$ 3,400
Klepierre
Investment in Unconsolidated Entities
Investment, in equity	$ 1,378,050	$ 1,661,943			$ 1,378,050
European Joint Venture | Designer Outlet properties
Investment in Unconsolidated Entities
Number of properties | property	11	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 revenue	$ 265,348		298,790		$ 940,408	840,396
Operating Income	103,087		102,325		411,965	215,295
Consolidated Net Income	$ 84,723		91,503		$ 311,608	619,942
Europe | Outlet Center In Ochtrup
Investment in Unconsolidated Entities
Investment, in equity							$ 48,700
Non-cash gain on remeasurement of equity interest to fair value				$ 3,700
Mortgage debt assumed							$ 47,100
Europe | Designer Outlet properties
Investment in Unconsolidated Entities
Number of properties consolidated by entity | property	7				7
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	$ 17.54				$ 17.54
Our share of net income, net of amortization of our excess investment	$ 24,224		$ 8,947		$ 51,981	115,874
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