Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Consolidated Net Income	$ 2,244,903	$ 2,134,706	$ 2,139,375
Adjustments to reconcile consolidated net income to net cash provided by operating activities -
Depreciation and amortization	1,357,351	1,327,946	1,239,214
Loss on debt extinguishment	128,618	136,777	120,953
Gain upon acquisition of controlling interests and sale or disposal of assets and interests in unconsolidated entities, net	(3,647)	(84,553)	(250,516)
Pre-development project cost charge		31,490
Gains on sales of marketable securities	(21,541)		(80,187)
Straight-line rent	(26,543)	(46,656)	(54,129)
Equity in income of unconsolidated entities	(400,270)	(353,334)	(284,806)
Distributions of income from unconsolidated entities	374,101	331,627	271,998
Changes in assets and liabilities -
Tenant receivables and accrued revenue, net	(26,170)	16,277	9,918
Deferred costs and other assets	(132,945)	(43,797)	(122,677)
Accounts payable, accrued expenses, intangibles, deferred revenues and other liabilities	99,931	(77,789)	35,542
Net cash provided by operating activities	3,593,788	3,372,694	3,024,685
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions	(264,488)	(499,976)	(1,410,881)
Funding of loans to related parties	(71,532)
Repayments of loans to related parties		8,207
Capital expenditures, net	(732,100)	(798,465)	(1,020,924)
Cash impact from the consolidation of properties	7,536	59,994
Net proceeds from sale of assets	19,944	36,558	33,015
Investments in unconsolidated entities	(157,173)	(312,160)	(329,928)
Purchase of marketable and non-marketable securities	(25,000)	(38,809)	(59,523)
Proceeds from sales of marketable and non-marketable securities	56,268	42,600	504,012
Distributions of capital from unconsolidated entities and other	405,078	533,025	821,509
Net cash used in investing activities	(761,467)	(969,026)	(1,462,720)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from sales of common stock, units and other, net of transaction costs	(328)	(328)	(285)
Purchase of shares or units related to stock grant recipients' tax withholdings	(2,789)	(4,299)	(3,301)
Purchase of treasury stock and limited partner units	(407,002)	(255,267)	(505,691)
Distributions to noncontrolling interest holders in properties	(11,295)	(9,731)	(8,041)
Contributions from noncontrolling interest holders in properties	382	1,507	4,552
Preferred distributions of the Operating Partnership	(1,915)	(1,915)	(1,915)
Distributions to stockholders and preferred dividends	(2,231,259)	(2,037,542)	(1,879,182)
Distributions to limited partners	(338,602)	(316,428)	(314,944)
Loss on debt extinguishment	(128,618)	(136,777)	(120,953)
Proceeds from issuance of debt, net of transaction costs	11,668,026	14,866,205	10,468,667
Repayments of debt	(10,456,671)	(14,650,168)	(9,112,020)
Net cash used in financing activities	(1,910,071)	(2,544,743)	(1,473,113)
INCREASE/(DECREASE) IN CASH AND CASH EQUIVALENTS	922,250	(141,075)	88,852
CASH AND CASH EQUIVALENTS, beginning of period	560,059	701,134	612,282
CASH AND CASH EQUIVALENTS, end of period	1,482,309	560,059	701,134
Simon Property Group, L.P.
CASH FLOWS FROM OPERATING ACTIVITIES:
Consolidated Net Income	2,244,903	2,134,706	2,139,375
Adjustments to reconcile consolidated net income to net cash provided by operating activities -
Depreciation and amortization	1,357,351	1,327,946	1,239,214
Loss on debt extinguishment	128,618	136,777	120,953
Gain upon acquisition of controlling interests and sale or disposal of assets and interests in unconsolidated entities, net	(3,647)	(84,553)	(250,516)
Pre-development project cost charge		31,490
Gains on sales of marketable securities	(21,541)		(80,187)
Straight-line rent	(26,543)	(46,656)	(54,129)
Equity in income of unconsolidated entities	(400,270)	(353,334)	(284,806)
Distributions of income from unconsolidated entities	374,101	331,627	271,998
Changes in assets and liabilities -
Tenant receivables and accrued revenue, net	(26,170)	16,277	9,918
Deferred costs and other assets	(132,945)	(43,797)	(122,677)
Accounts payable, accrued expenses, intangibles, deferred revenues and other liabilities	99,931	(77,789)	35,542
Net cash provided by operating activities	3,593,788	3,372,694	3,024,685
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions	(264,488)	(499,976)	(1,410,881)
Funding of loans to related parties	(71,532)
Repayments of loans to related parties		8,207
Capital expenditures, net	(732,100)	(798,465)	(1,020,924)
Cash impact from the consolidation of properties	7,536	59,994
Net proceeds from sale of assets	19,944	36,558	33,015
Investments in unconsolidated entities	(157,173)	(312,160)	(329,928)
Purchase of marketable and non-marketable securities	(25,000)	(38,809)	(59,523)
Proceeds from sales of marketable and non-marketable securities	56,268	42,600	504,012
Distributions of capital from unconsolidated entities and other	405,078	533,025	821,509
Net cash used in investing activities	(761,467)	(969,026)	(1,462,720)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from sales of common stock, units and other, net of transaction costs	(328)	(328)	(285)
Purchase of shares or units related to stock grant recipients' tax withholdings	(2,789)	(4,299)	(3,301)
Purchase of limited partner units	(407,002)	(255,267)	(505,691)
Distributions to noncontrolling interest holders in properties	(11,295)	(9,731)	(8,041)
Contributions from noncontrolling interest holders in properties	382	1,507	4,552
Distributions to limited partners	(2,571,776)	(2,355,885)	(2,196,041)
Loss on debt extinguishment	(128,618)	(136,777)	(120,953)
Proceeds from issuance of debt, net of transaction costs	11,668,026	14,866,205	10,468,667
Repayments of debt	(10,456,671)	(14,650,168)	(9,112,020)
Net cash used in financing activities	(1,910,071)	(2,544,743)	(1,473,113)
INCREASE/(DECREASE) IN CASH AND CASH EQUIVALENTS	922,250	(141,075)	88,852
CASH AND CASH EQUIVALENTS, beginning of period	560,059	701,134	612,282
CASH AND CASH EQUIVALENTS, end of period	$ 1,482,309	$ 560,059	$ 701,134