CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Real estate:
Buildings and improvements	$ 11,120,039	$ 10,877,248
Development costs and construction in progress	692,336	537,643
Land	1,992,602	1,637,506
Accumulated depreciation and amortization	(2,771,922)	(2,842,947)
Net real estate	11,033,055	10,209,450
Net investment in direct financing leases	84,604	713,818
Loans receivable, net	190,579	62,998
Investments in and advances to unconsolidated joint ventures	825,515	540,088
Accounts receivable, net of allowance of $4,565 and $5,127	59,417	48,171
Cash and cash equivalents	144,232	110,790
Restricted cash	40,425	29,056
Intangible assets, net	331,693	305,079
Assets held for sale, net	504,394	108,086
Right-of-use asset, net	172,486
Other assets, net	646,491	591,017
Total assets	14,032,891	12,718,553
LIABILITIES AND EQUITY
Bank line of credit and commercial paper	93,000	80,103
Term loan	248,942	0
Senior unsecured notes	5,647,993	5,258,550
Mortgage debt	276,907	138,470
Other debt	84,771	90,785
Intangible liabilities, net	74,991	54,663
Liabilities of assets held for sale, net	36,369	1,125
Lease liability	156,611
Accounts payable and accrued liabilities	456,153	391,583
Deferred revenue	289,680	190,683
Total liabilities	7,365,417	6,205,962
Commitments and contingencies
Common stock, $1.00 par value: 750,000,000 shares authorized; 505,221,643 and 477,496,499 shares issued and outstanding	505,222	477,496
Additional paid-in capital	9,183,892	8,398,847
Cumulative dividends in excess of earnings	(3,601,199)	(2,927,196)
Accumulated other comprehensive income (loss)	(2,857)	(4,708)
Total stockholders' equity	6,085,058	5,944,439
Joint venture partners	378,061	391,401
Non-managing member unitholders	204,355	176,751
Total noncontrolling interests	582,416	568,152
Total equity	6,667,474	6,512,591
Total liabilities and equity	$ 14,032,891	$ 12,718,553