CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Real estate:
Buildings and improvements	$ 11,048,433	$ 8,112,193
Development costs and construction in progress	613,182	654,792
Land	1,867,278	1,605,599
Accumulated depreciation and amortization	(2,409,135)	(2,141,960)
Net real estate	11,119,758	8,230,624
Net investment in direct financing leases	44,706	84,604
Loans receivable, net of reserves of $10,280 and $0	195,375	190,579
Investments in and advances to unconsolidated joint ventures	402,871	774,381
Accounts receivable, net of allowance of $3,994 and $387	42,269	44,842
Cash and cash equivalents	44,226	80,398
Restricted cash	67,206	13,385
Intangible assets, net	519,917	260,204
Assets held for sale and discontinued operations, net	2,626,306	3,648,265
Right-of-use asset, net	192,349	167,316
Other assets, net	665,106	538,293
Total assets	15,920,089	14,032,891
LIABILITIES AND EQUITY
Bank line of credit and commercial paper	129,590	93,000
Term loan	249,182	248,942
Senior unsecured notes	5,697,586	5,647,993
Mortgage debt	221,621	12,317
Intangible liabilities, net	144,199	74,991
Liabilities related to assets held for sale and discontinued operations, net	415,737	403,688
Lease liability	179,895	152,400
Accounts payable, accrued liabilities, and other liabilities	763,391	457,532
Deferred revenue	774,316	274,554
Total liabilities	8,575,517	7,365,417
Commitments and contingencies
Common stock, $1.00 par value: 750,000,000 shares authorized; 538,405,393 and 505,221,643 shares issued and outstanding	538,405	505,222
Additional paid-in capital	10,229,857	9,183,892
Cumulative dividends in excess of earnings	(3,976,232)	(3,601,199)
Accumulated other comprehensive income (loss)	(3,685)	(2,857)
Total stockholders' equity	6,788,345	6,085,058
Joint venture partners	357,069	378,061
Non-managing member unitholders	199,158	204,355
Total noncontrolling interests	556,227	582,416
Total equity	7,344,572	6,667,474
Total liabilities and equity	$ 15,920,089	$ 14,032,891