CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Real estate:
Buildings and improvements	$ 10,967,446	$ 11,120,039
Development costs and construction in progress	684,979	692,336
Land	1,889,643	1,992,602
Accumulated depreciation and amortization	(2,507,881)	(2,771,922)
Net real estate	11,034,187	11,033,055
Net investment in direct financing leases	44,706	84,604
Loans receivable, net of reserves of $11,547 and $0	231,162	190,579
Investments in and advances to unconsolidated joint ventures	436,271	825,515
Accounts receivable, net of allowance of $9,004 and $4,565	63,216	59,417
Cash and cash equivalents	197,119	144,232
Restricted cash	102,419	40,425
Intangible assets, net	501,583	331,693
Assets held for sale, net	2,213,185	504,394
Right-of-use asset, net	190,875	172,486
Other assets, net	737,098	646,491
Total assets	15,751,821	14,032,891
LIABILITIES AND EQUITY
Bank line of credit and commercial paper	0	93,000
Term loan	249,122	248,942
Senior unsecured notes	5,695,567	5,647,993
Mortgage debt	435,206	276,907
Intangible liabilities, net	108,031	74,991
Liabilities related to assets held for sale, net	93,046	36,369
Lease liability	175,002	156,611
Accounts payable, accrued liabilities, and other liabilities	834,518	540,924
Deferred revenue	755,021	289,680
Total liabilities	8,345,513	7,365,417
Commitments and contingencies
Common stock, $1.00 par value: 750,000,000 shares authorized; 538,354,755 and 505,221,643 shares issued and outstanding	538,355	505,222
Additional paid-in capital	10,228,086	9,183,892
Cumulative dividends in excess of earnings	(3,923,150)	(3,601,199)
Accumulated other comprehensive income (loss)	(3,236)	(2,857)
Total stockholders' equity	6,840,055	6,085,058
Joint venture partners	366,708	378,061
Non-managing member unitholders	199,545	204,355
Total noncontrolling interests	566,253	582,416
Total equity	7,406,308	6,667,474
Total liabilities and equity	$ 15,751,821	$ 14,032,891