Investments in Unconsolidated Joint Ventures (Combined Financial Information Income Statement) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Equity method investment, summarized financial information, income statement [Abstract]
Revenues									$ 620,513	$ 601,272	$ 586,499
Maintenance, taxes, utilities, promotion, and other operating expenses									226,014	211,285	218,004
Equity Method Investment Summarized Financial Information Impairment Charges									6,154
Interest expense									139,756	132,669	130,339
Depreciation and amortization									131,223	131,884	127,625
Total operating costs									503,147	475,838	475,968
Nonoperating income, net									2,870	1,923	2,894
Income tax expense									(8,541)	(5,935)	(5,226)
Gain on disposition, net of tax (2)											3,713
Net income									111,695	121,422	111,912
Net income attributable to TRG									58,020	62,964	59,994
Realized intercompany profit, net of depreciation on TRG’s basis adjustments									5,698	8,386	9,326
Depreciation of TCO's additional basis									(1,946)	(1,946)	(1,946)
Equity Method Investment Difference Between Net Income Attributable To Operating Partnership And Equity In Income Of Unconsolidated Joint Ventures Impairment Of Company's Additional Basis									(12,606)
Equity in income of Unconsolidated Joint Ventures	$ (580)	$ 20,252	$ 14,822	$ 14,672	$ 18,724	$ 16,910	$ 14,042	$ 19,728	49,166	69,404	67,374
Beneficial interest in Unconsolidated Joint Ventures’ operations:
Revenues less maintenance, taxes, utilities, promotion, and other operating expenses									212,057	209,423	202,332
Interest expense									(69,749)	(68,225)	(67,283)
Depreciation and amortization									(71,583)	(68,894)	(66,933)
Income Loss From Equity Method Investments Potion Due To Impairment									(17,951)
Income tax expense									(3,608)	(2,900)	(2,825)
Gain on disposition, net of tax (1)											$ 2,083
Equity Method Investment, Realized Gain (Loss) on Disposal