Investments in Unconsolidated Joint Ventures - Combined Condensed Statements of Operations of Unconsolidated Joint Ventures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues:
Leasing revenue	$ 787,547	$ 740,323	$ 858,874
Total revenues	847,437	786,026	927,462
Expenses:
Leasing expense	24,838	25,191	29,611
Interest expense	192,679	75,550	138,254
Depreciation and amortization	311,129	319,619	330,726
Total expenses	915,755	773,487	859,918
Loss on sale of assets	75,740	(68,112)	(11,909)
Net income (loss)	16,163	(245,462)	102,554
Company's equity in net (loss) income	15,689	(27,038)	48,508
Joint venture
Expenses:
Company's equity in net (loss) income	15,689
Other
Revenues:
Other	33,867	22,242	27,879
Shopping center and operating expenses
Expenses:
Shopping center and operating expenses	295,016	257,212	271,547
Investments in Unconsolidated Joint Ventures | Joint venture
Revenues:
Leasing revenue	799,981	804,862	900,649
Total revenues	857,126	823,915	951,431
Expenses:
Leasing expense	5,678	5,498	8,293
Interest expense	210,617	216,317	217,465
Depreciation and amortization	351,055	388,736	374,055
Total expenses	854,340	887,708	887,939
Loss on sale of assets	(9,178)	37	(832)
Net income (loss)	(6,392)	(63,756)	62,660
Company's equity in net (loss) income		(27,038)	48,508
Investments in Unconsolidated Joint Ventures | Other | Joint venture
Revenues:
Other	57,145	19,053	50,782
Investments in Unconsolidated Joint Ventures | Shopping center and operating expenses | Joint venture
Expenses:
Shopping center and operating expenses	286,990	277,157	288,126
Investments in Unconsolidated Joint Ventures | PPR Portfolio | Joint venture
Revenues:
Leasing revenue	168,842	171,505	187,789
Total revenues	168,904	172,119	189,387
Expenses:
Leasing expense	1,286	1,325	1,598
Interest expense	63,072	64,460	67,354
Depreciation and amortization	97,494	102,788	100,490
Total expenses	202,150	205,591	206,970
Loss on sale of assets	0	(120)	(452)
Net income (loss)	(33,246)	(33,592)	(18,035)
Company's equity in net (loss) income	(10,866)	(10,371)	(590)
Investments in Unconsolidated Joint Ventures | PPR Portfolio | Other | Joint venture
Revenues:
Other	62	614	1,598
Investments in Unconsolidated Joint Ventures | PPR Portfolio | Shopping center and operating expenses | Joint venture
Expenses:
Shopping center and operating expenses	40,298	37,018	37,528
Investments in Unconsolidated Joint Ventures | Other Joint Ventures | Joint venture
Revenues:
Leasing revenue	631,139	633,357	712,860
Total revenues	688,222	651,796	762,044
Expenses:
Leasing expense	4,392	4,173	6,695
Interest expense	147,545	151,857	150,111
Depreciation and amortization	253,561	285,948	273,565
Total expenses	652,190	682,117	680,969
Loss on sale of assets	(9,178)	157	(380)
Net income (loss)	26,854	(30,164)	80,695
Company's equity in net (loss) income	26,555	(16,667)	49,098
Investments in Unconsolidated Joint Ventures | Other Joint Ventures | Other | Joint venture
Revenues:
Other	57,083	18,439	49,184
Investments in Unconsolidated Joint Ventures | Other Joint Ventures | Shopping center and operating expenses | Joint venture
Expenses:
Shopping center and operating expenses	$ 246,692	$ 240,139	$ 250,598