Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
ASSETS:
Investment properties at cost	$ 33,463,124	$ 31,318,532
Less - accumulated depreciation	9,915,386	8,950,747
Investment properties at cost, net	23,547,738	22,367,785
Cash and cash equivalents	701,134	612,282
Tenant receivables and accrued revenue, net	624,605	580,197
Investment in unconsolidated entities, at equity	2,481,574	2,378,800
Investment in Klepierre, at equity	1,943,363	1,786,477
Deferred costs and other assets	1,352,259	1,806,789
Total assets	30,650,673	29,532,330
LIABILITIES:
Mortgages and unsecured indebtedness	22,502,173	20,852,993
Accounts payable, accrued expenses, intangibles, and deferred revenues	1,323,801	1,259,681
Cash distributions and losses in partnerships and joint ventures, at equity	1,368,544	1,167,163
Other liabilities	214,249	275,451
Total liabilities	$ 25,408,767	$ 23,555,288
Commitments and contingencies
Limited partners' preferred interest in the Operating Partnership	$ 25,537	$ 25,537
Capital stock (850,000,000 total shares authorized, $ 0.0001 par value, 238,000,000 shares of excess common stock, 100,000,000 authorized shares of preferred stock):
Series J 8 3/8% cumulative redeemable preferred stock, 1,000,000 shares authorized, 796,948 issued and outstanding with a liquidation value of $ 39,847	43,733	44,062
Capital in excess of par value	9,384,450	9,422,237
Accumulated deficit	(4,266,930)	(4,208,183)
Accumulated other comprehensive loss	(252,686)	(61,041)
Common stock held in treasury at cost, 5,394,345 and 3,540,754 shares, respectively	(437,134)	(103,929)
Total stockholders' equity	4,471,464	5,093,177
Noncontrolling interests	744,905	858,328
Total equity	5,216,369	5,951,505
Total liabilities and equity	30,650,673	29,532,330
Common stock
Capital stock (850,000,000 total shares authorized, $ 0.0001 par value, 238,000,000 shares of excess common stock, 100,000,000 authorized shares of preferred stock):
Common stock	$ 31	$ 31
Class B common stock
Capital stock (850,000,000 total shares authorized, $ 0.0001 par value, 238,000,000 shares of excess common stock, 100,000,000 authorized shares of preferred stock):
Common stock