Unaudited Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS:
Investment properties, at cost	$ 36,383,699	$ 36,393,464
Less - accumulated depreciation	12,074,719	11,935,949
Investment properties at cost, net	24,308,980	24,457,515
Cash and cash equivalents	367,207	1,482,309
Tenant receivables and accrued revenue, net	686,158	742,672
Investment in unconsolidated entities, at equity	2,268,956	2,266,483
Investment in Klepierre, at equity	2,011,919	1,934,676
Deferred costs and other assets	1,374,640	1,373,983
Total assets	31,017,860	32,257,638
LIABILITIES:
Mortgages and unsecured indebtedness	23,647,623	24,632,463
Accounts payable, accrued expenses, intangibles, and deferred revenues	1,180,851	1,269,190
Cash distributions and losses in unconsolidated entities, at equity	1,421,879	1,406,378
Other liabilities	532,491	520,363
Total liabilities	26,782,844	27,828,394
Commitments and contingencies
Limited partners' preferred interest in the Operating Partnership and noncontrolling redeemable interests in properties	201,680	190,480
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	42,994	43,077
Capital in excess of par value	9,647,272	9,614,748
Accumulated deficit	(4,774,442)	(4,782,173)
Accumulated other comprehensive loss	(102,747)	(110,453)
Common stock held in treasury, at cost, 10,638,880 and 9,163,920 shares, respectively	(1,307,203)	(1,079,063)
Total stockholders' equity	3,505,906	3,686,168
Noncontrolling interests	527,430	552,596
Total equity	4,033,336	4,238,764
Total liabilities and equity	31,017,860	32,257,638
Simon Property Group, L.P.
ASSETS:
Investment properties, at cost	36,383,699	36,393,464
Less - accumulated depreciation	12,074,719	11,935,949
Investment properties at cost, net	24,308,980	24,457,515
Cash and cash equivalents	367,207	1,482,309
Tenant receivables and accrued revenue, net	686,158	742,672
Investment in unconsolidated entities, at equity	2,268,956	2,266,483
Investment in Klepierre, at equity	2,011,919	1,934,676
Deferred costs and other assets	1,374,640	1,373,983
Total assets	31,017,860	32,257,638
LIABILITIES:
Mortgages and unsecured indebtedness	23,647,623	24,632,463
Accounts payable, accrued expenses, intangibles, and deferred revenues	1,180,851	1,269,190
Cash distributions and losses in unconsolidated entities, at equity	1,421,879	1,406,378
Other liabilities	532,491	520,363
Total liabilities	26,782,844	27,828,394
Commitments and contingencies
Limited partners' preferred interest in the Operating Partnership and noncontrolling redeemable interests in properties	201,680	190,480
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	42,994	43,077
General Partner, 309,697,894 and 311,166,854 units outstanding, respectively	3,462,912	3,643,091
Limited Partners, 46,829,844 and 46,879,625 units outstanding, respectively	523,630	548,858
Total partners' equity	4,029,536	4,235,026
Nonredeemable noncontrolling interests in properties, net	3,800	3,738
Total equity	4,033,336	4,238,764
Total liabilities and equity	31,017,860	32,257,638
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