Investments in Unconsolidated Joint Ventures (Combined Financial Information Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Assets:
Properties	$ 1,517,439	$ 1,305,658
Accumulated depreciation and amortization	(539,451)	(478,820)
Properties, net	977,988	826,838
Cash and cash equivalents	28,763	28,782
Allowance for doubtful accounts	1,364	977
Accounts and notes receivable, less allowance for doubtful accounts of $1,364 and $977 in 2014 and 2013	29,399	33,626
Deferred charges and other assets	31,740	28,095
Total Assets	1,067,890	917,341
Liabilities and accumulated deficiency in assets:
Notes payable	1,785,602	1,551,161
Accounts payable and other liabilities	73,889	70,226
TRG's accumulated deficiency in assets	(453,452)	(412,204)
Unconsolidated Joint Venture Partners' accumulated deficiency in assets	(338,149)	(291,842)
Equity Method Investment, Summarized Financial Information, Liabilities and Equity	1,067,890	917,341
TRG's accumulated deficiency in assets (above)	(453,452)	(412,204)
TRG's investment in properties under development (Note 2)	226,853	193,306
TRG basis adjustments, including elimination of intercompany profit	131,070	118,132
TCO's additional basis	55,449	56,909
Equity Method Investment Difference Between Carrying Amount And Underlying Equity Net Investment	(40,080)	(43,857)
Distributions in excess of investments in and net income of Unconsolidated Joint Ventures	401,809	371,549
Investment in Unconsolidated Joint Ventures	$ 361,729	$ 327,692