CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Real estate:
Buildings and improvements	$ 11,784,671	$ 10,877,248
Development costs and construction in progress	496,662	537,643
Land	1,879,227	1,637,506
Accumulated depreciation and amortization	(2,926,656)	(2,842,947)
Net real estate	11,233,904	10,209,450
Net investment in direct financing leases	357,104	713,818
Loans receivable, net	124,559	62,998
Investments in and advances to unconsolidated joint ventures	518,033	540,088
Accounts receivable, net of allowance of $6,899 and $5,127	53,840	48,171
Cash and cash equivalents	130,521	110,790
Restricted cash	25,531	29,056
Intangible assets, net	317,960	305,079
Assets held for sale, net	160,999	108,086
Right-of-use asset, net	172,424
Other assets, net	618,218	591,017
Total assets	13,713,093	12,718,553
LIABILITIES AND EQUITY
Bank line of credit	530,004	80,103
Term loan	248,821	0
Senior unsecured notes	5,262,694	5,258,550
Mortgage debt	161,829	138,470
Other debt	87,211	90,785
Intangible liabilities, net	53,771	54,663
Liabilities of assets held for sale, net	30,093	1,125
Lease liability	154,877
Accounts payable and accrued liabilities	371,235	391,583
Deferred revenue	193,286	190,683
Total liabilities	7,093,821	6,205,962
Commitments and contingencies
Common stock, $1.00 par value: 750,000,000 shares authorized; 491,108,584 and 477,496,499 shares issued and outstanding	491,109	477,496
Additional paid-in capital	8,801,037	8,398,847
Cumulative dividends in excess of earnings	(3,233,283)	(2,927,196)
Accumulated other comprehensive income (loss)	(4,459)	(4,708)
Total stockholders' equity	6,054,404	5,944,439
Joint venture partners	388,617	391,401
Non-managing member unitholders	176,251	176,751
Total noncontrolling interests	564,868	568,152
Total equity	6,619,272	6,512,591
Total liabilities and equity	$ 13,713,093	$ 12,718,553