CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Real estate:
Buildings and improvements	$ 12,841,242	$ 11,120,039
Development costs and construction in progress	678,146	692,336
Land	2,113,871	1,992,602
Accumulated depreciation and amortization	(2,846,260)	(2,771,922)
Net real estate	12,786,999	11,033,055
Net investment in direct financing leases	44,706	84,604
Loans receivable, net of reserves of $14,115 and $0	253,774	190,579
Investments in and advances to unconsolidated joint ventures	460,386	825,515
Accounts receivable, net of allowance of $9,487 and $4,565	73,432	59,417
Cash and cash equivalents	730,957	144,232
Restricted cash	105,684	40,425
Intangible assets, net	537,555	331,693
Assets held for sale, net	378,708	504,394
Right-of-use asset, net	193,729	172,486
Other assets, net	750,510	646,491
Total assets	16,316,440	14,032,891
LIABILITIES AND EQUITY
Bank line of credit and commercial paper	0	93,000
Term loan	249,062	248,942
Senior unsecured notes	5,992,193	5,647,993
Mortgage debt	487,532	276,907
Intangible liabilities, net	110,732	74,991
Liabilities of assets held for sale, net	32,648	36,369
Lease liability	177,029	156,611
Accounts payable, accrued liabilities, and other liabilities	847,080	540,924
Deferred revenue	751,443	289,680
Total liabilities	8,647,719	7,365,417
Commitments and contingencies
Common stock, $1.00 par value: 750,000,000 shares authorized; 538,317,896 and 505,221,643 shares issued and outstanding	538,318	505,222
Additional paid-in capital	10,222,728	9,183,892
Cumulative dividends in excess of earnings	(3,660,187)	(3,601,199)
Accumulated other comprehensive income (loss)	(2,186)	(2,857)
Total stockholders' equity	7,098,673	6,085,058
Joint venture partners	370,347	378,061
Non-managing member unitholders	199,701	204,355
Total noncontrolling interests	570,048	582,416
Total equity	7,668,721	6,667,474
Total liabilities and equity	$ 16,316,440	$ 14,032,891