Consolidated Statements of Equity (Parenthetical) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Exchange of limited partner units, (in shares)	24,000	92,732	500,411
Issuance of limited partner, units		475,183
Stock incentive program, shares, net	90,902	51,756	76,660
Redemption of Limited Partner Units	43,255	454,704
Treasury stock purchase, shares	2,247,074	2,275,194	2,468,630
Issuance of equivalents units	16,336	18,680	16,161
Net income attributable to preferred interests in the Operating Partnership (in dollars)	$ 1,915,000	$ 1,915,000	$ 1,915,000
Net income (loss) attributable to noncontrolling redeemable interests in properties (in dollars)	$ (431,000)	$ 3,416,000	$ (2,078,000)
Simon Property Group, L.P.
Limited partner units exchanged to common units	24,000	92,732	500,411
Issuance of limited partner, units		475,183
Stock incentive program, units, net	90,902	51,756	76,660
Redemption of Limited Partner Units	43,255	454,704
Treasury unit purchase, units	2,247,074	2,275,194	2,468,630
Issuance of equivalents units	16,336	18,680	103,941
Issuance of common units			$ 16,161
Net income, attributable to preferred distributions on temporary equity preferred units (in dollars)	$ 1,915,000	$ 1,915,000	1,915,000
Net income (loss) attributable to noncontrolling redeemable interests in properties (in dollars)	$ (431,000)	$ 3,416,000	$ (2,078,000)