Investments in Unconsolidated Joint Ventures (Combined Financial Information Balance Sheet) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Assets:
Properties	$ 3,791,076	$ 3,816,923
Accumulated depreciation and amortization	(985,484)	(942,840)
Properties, net	2,805,592	2,874,083
Cash and cash equivalents	174,421	201,501
Accounts and notes receivable	150,095	122,569
Operating lease right-of-use assets	12,537	11,521
Deferred charges and other assets	159,056	178,708
Total Assets	3,301,701	3,388,382
Liabilities and accumulated equity (deficiency) in assets:
Notes payable, net (1)	3,093,353	3,049,737
Accounts payable and other liabilities	241,325	341,263
Operating lease liabilities	14,286	13,274
TRG's accumulated deficiency in assets	(250,658)	(212,380)
UJV Partners' accumulated equity in assets	203,395	196,488
Total Liabilities and Accumulated Equity (Deficiency) in Assets	3,301,701	3,388,382
TRG's accumulated deficiency in assets (above)	(250,658)	(212,380)
TRG's investment in Starfield Anseong (Note 2) and advances to CityOn.Zhengzhou	204,177	209,024
TRG basis adjustments, including elimination of intercompany profit	334,527	329,673
TCO's additional basis	31,924	32,625
Net investment in UJVs	319,970	358,942
Distributions in excess of investments in and net income of UJVs	470,166	473,053
Investment in Unconsolidated Joint Ventures	790,136	$ 831,995
Starfield Anseong [Member]
Liabilities and accumulated equity (deficiency) in assets:
Notes Payable, Current	127,200
Notes Payable, At Beneficial Interest	$ 62,300