Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Deferred income tax assets:
Net operating loss carryforwards	$ 443,026	$ 154,410
Basis difference - real estate properties	211,069	116,280
Basis difference - equity investees	20,008	31,804
Basis difference - intangibles	24,664	28,239
Alternative minimum tax credit carryforward	1,388	1,050
Foreign tax credit carryforward	1,944	0
Section 163(j) interest limitation	36,733	0
Other - temporary differences	14,784	5,580
Total deferred income tax assets	753,616	337,363
Valuation allowance	(641,064)	(248,582)
Net deferred income tax assets	112,552	88,781
Deferred income tax liabilities:
Basis difference - real estate properties	593,746	44,619
Built-in-gains - real estate properties	6,402	6,402
Basis difference - equity investees	1,118	10,176
Built-in-gains - equity investees	22,111	23,766
Indemnification liabilities	34,824	37,881
Basis difference-intangibles	9,742	0
Other - temporary differences	7,384	16,447
Total deferred income tax liabilities	675,327	139,291
Net deferred income tax liabilities	$ 562,775	$ 50,510