CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Real estate:
Buildings and improvements	$ 9,010,834	$ 8,209,806
Development costs and construction in progress	168,828	144,116
Land	1,732,413	1,573,984
Accumulated depreciation and amortization	(1,465,165)	(1,251,142)
Net real estate	9,446,910	8,676,764
Net investment in direct financing leases	6,687,812	609,661
Loans receivable, net	103,473	2,002,866
Investments in and advances to unconsolidated joint ventures	225,979	195,847
Accounts receivable, net of allowance of $1,426 and $5,150, respectively	24,786	34,504
Cash and cash equivalents	44,860	1,036,701
Restricted cash	47,851	36,319
Intangible assets, net	389,518	316,375
Other assets, net	468,188	422,886
Total assets	17,439,377	13,331,923
LIABILITIES AND EQUITY
Bank line of credit	375,000
Senior unsecured notes	5,415,097	3,318,379
Mortgage debt	1,780,040	1,235,779
Other debt	89,325	92,187
Intangible liabilities, net	132,788	148,072
Accounts payable and accrued liabilities	260,346	313,806
Deferred revenue	69,729	77,653
Total liabilities	8,122,325	5,185,876
Commitments and contingencies
Preferred stock, $1.00 par value: 50,000,000 shares authorized; 11,820,000 shares issued and outstanding, liquidation preference of $25.00 per share	285,173	285,173
Common stock, $1.00 par value: 750,000,000 shares authorized; 407,779,492 and 370,924,887 shares issued and outstanding, respectively	407,779	370,925
Additional paid-in capital	9,353,785	8,089,982
Cumulative dividends in excess of earnings	(890,477)	(775,476)
Accumulated other comprehensive loss	(28,483)	(13,237)
Total stockholders' equity	9,127,777	7,957,367
Joint venture partners	18,184	14,935
Non-managing member unitholders	171,091	173,745
Total noncontrolling interests	189,275	188,680
Total equity	9,317,052	8,146,047
Total liabilities and equity	$ 17,439,377	$ 13,331,923