Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
ASSETS:
Investment properties, at cost	$ 37,193,798	$ 37,092,670
Less - accumulated depreciation	13,119,895	12,884,539
Investment properties at cost, net	24,073,903	24,208,131
Cash and cash equivalents	436,802	514,335
Tenant receivables and accrued revenue, net	733,159	763,815
Investment in unconsolidated entities, at equity	2,197,309	2,220,414
Investment in Klepierre, at equity	1,676,635	1,769,488
Deferred costs and other assets	1,723,968	1,210,040
Total assets	30,841,776	30,686,223
LIABILITIES:
Mortgages and unsecured indebtedness	23,185,965	23,305,535
Accounts payable, accrued expenses, intangibles, and deferred revenues	1,157,477	1,316,861
Cash distributions and losses in unconsolidated entities, at equity	1,559,534	1,536,111
Other liabilities	1,012,976	500,597
Total liabilities	26,915,952	26,659,104
Commitments and contingencies
Limited partners' preferred interest in the Operating Partnership and noncontrolling redeemable interests in properties	225,882	230,163
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 83/8% cumulative redeemable preferred stock, 1,000,000 shares authorized, 796,948 issued and outstanding with a liquidation value of $39,847	42,666	42,748
Capital in excess of par value	9,706,021	9,700,418
Accumulated deficit	(4,979,489)	(4,893,069)
Accumulated other comprehensive loss	(120,962)	(126,017)
Common stock held in treasury, at cost, 11,449,963 and 11,402,103 shares, respectively	(1,435,309)	(1,427,431)
Total stockholders' equity	3,212,959	3,296,681
Noncontrolling interests	486,983	500,275
Total equity	3,699,942	3,796,956
Total liabilities and equity	30,841,776	30,686,223
Simon Property Group, L.P.
ASSETS:
Investment properties, at cost	37,193,798	37,092,670
Less - accumulated depreciation	13,119,895	12,884,539
Investment properties at cost, net	24,073,903	24,208,131
Cash and cash equivalents	436,802	514,335
Tenant receivables and accrued revenue, net	733,159	763,815
Investment in unconsolidated entities, at equity	2,197,309	2,220,414
Investment in Klepierre, at equity	1,676,635	1,769,488
Deferred costs and other assets	1,723,968	1,210,040
Total assets	30,841,776	30,686,223
LIABILITIES:
Mortgages and unsecured indebtedness	23,185,965	23,305,535
Accounts payable, accrued expenses, intangibles, and deferred revenues	1,157,477	1,316,861
Cash distributions and losses in unconsolidated entities, at equity	1,559,534	1,536,111
Other liabilities	1,012,976	500,597
Total liabilities	26,915,952	26,659,104
Commitments and contingencies
Limited partners' preferred interest in the Operating Partnership and noncontrolling redeemable interests in properties	225,882	230,163
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):
Preferred units, 796,948 units outstanding. Liquidation value of $39,847	42,666	42,748
General Partner, 308,993,608 and 309,017,468 units outstanding, respectively	3,170,293	3,253,933
Limited Partners, 46,782,598 and 46,807,372 units outstanding, respectively	479,989	492,877
Total partners' equity	3,692,948	3,789,558
Nonredeemable noncontrolling interests in properties, net	6,994	7,398
Total equity	3,699,942	3,796,956
Total liabilities and equity	30,841,776	30,686,223
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	32	32
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