Consolidated Statements of Equity (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018
Exchange of limited partner units, (in shares)			24,000	86,732		6,000
Issuance of limited partner, units				475,183
Stock incentive program, shares, net	1,534	89,368			51,520	236
Redemption of Limited Partner Units	27,214		774		8,716	40,503
Treasury stock purchase, shares	1,154,117	1,046,580	46,377		514,659	1,473,588
Issuance of equivalents units		14,853	1,483		17,072	1,608
Net income attributable to preferred interests in the Operating Partnership (in dollars)	$ 479	$ 478	$ 479	$ 479	$ 478	$ 479
Net income (loss) attributable to noncontrolling redeemable interests in properties (in dollars)	$ 5	$ (28)	$ (1,065)	$ 180	$ 60	$ (619)
Simon Property Group, L.P.
Limited partner units exchanged to common units			24,000	86,732		6,000
Issuance of limited partner, units				475,183
Stock incentive program, units, net	1,534	89,368			51,520	236
Redemption of Limited Partner Units	27,214		774		8,716	40,503
Treasury unit purchase, units	1,154,117	1,046,580	46,377		514,659	1,473,588
Issuance of equivalents units		14,853	1,483		17,072	1,608
Net income, attributable to preferred distributions on temporary equity preferred units (in dollars)	$ 479	$ 478	$ 479	$ 479	$ 478	$ 479
Net income (loss) attributable to noncontrolling redeemable interests in properties (in dollars)	$ 5	$ (28)	$ (1,065)	$ 180	$ 60	$ (619)