CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Real estate:
Buildings and improvements	$ 11,759,664	$ 11,048,433
Development costs and construction in progress	845,382	613,182
Land	2,206,422	1,867,278
Accumulated depreciation and amortization	(2,734,832)	(2,409,135)
Net real estate	12,076,636	11,119,758
Net investment in direct financing leases	44,706	44,706
Loans receivable, net of reserves of $2,727 and $10,280	411,062	195,375
Investments in and advances to unconsolidated joint ventures	389,095	402,871
Accounts receivable, net of allowance of $3,690 and $3,994	44,699	42,269
Cash and cash equivalents	201,099	44,226
Restricted cash	53,699	67,206
Intangible assets, net	520,335	519,917
Assets held for sale and discontinued operations, net	105,009	2,626,306
Right-of-use asset, net	218,524	192,349
Other assets, net	678,638	665,106
Total assets	14,743,502	15,920,089
LIABILITIES AND EQUITY
Bank line of credit and commercial paper	1,024,000	129,590
Term loan	0	249,182
Senior unsecured notes	4,157,834	5,697,586
Mortgage debt	356,570	221,621
Intangible liabilities, net	144,004	144,199
Liabilities related to assets held for sale and discontinued operations, net	18,910	415,737
Lease liability	191,444	179,895
Accounts payable, accrued liabilities, and other liabilities	729,939	760,617
Deferred revenue	782,413	774,316
Total liabilities	7,405,114	8,572,743
Commitments and contingencies
Redeemable noncontrolling interests	119,591	57,396
Common stock, $1.00 par value: 750,000,000 shares authorized; 539,066,131 and 538,405,393 shares issued and outstanding	539,066	538,405
Additional paid-in capital	10,122,112	10,175,235
Cumulative dividends in excess of earnings	(3,987,537)	(3,976,232)
Accumulated other comprehensive income (loss)	(3,281)	(3,685)
Total stockholders’ equity	6,670,360	6,733,723
Joint venture partners	347,180	357,069
Non-managing member unitholders	201,257	199,158
Total noncontrolling interests	548,437	556,227
Total equity	7,218,797	7,289,950
Total liabilities and equity	$ 14,743,502	$ 15,920,089