Document and Entity Information - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Jan. 31, 2024	Jun. 30, 2023
Document Information
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2023
Entity Registrant Name	SIMON PROPERTY GROUP, INC.
Entity Incorporation, State or Country Code	DE
Entity File Number	001-14469
Entity Tax Identification Number	04-6268599
Entity Address, Address Line One	225 West Washington Street
Entity Address, City or Town	Indianapolis
Entity Address, State or Province	IN
Entity Address, Postal Zip Code	46204
City Area Code	317
Local Phone Number	636-1600
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction	false
Entity Shell Company	false
Entity Public Float			$ 37,467
Auditor Firm ID	42
Auditor Name	Ernst & Young LLP
Auditor Location	Indianapolis, Indiana
Entity Central Index Key	0001063761
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Amendment Flag	false
Common stock
Document Information
Title of 12(b) Security	Common stock, $0.0001 par value
Trading Symbol	SPG
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		325,891,010
Entity Listing, Par Value Per Share	$ 0.0001
Class B common stock
Document Information
Entity Common Stock, Shares Outstanding		8,000
Entity Listing, Par Value Per Share	$ 0.0001
Series J Preferred stock
Document Information
Title of 12(b) Security	83/8% Series J Cumulative Redeemable Preferred Stock, $0.0001 par value
Trading Symbol	SPGJ
Security Exchange Name	NYSE
Simon Property Group, L.P.
Document Information
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2023
Entity Registrant Name	SIMON PROPERTY GROUP, L.P.
Entity Incorporation, State or Country Code	DE
Entity File Number	001-36110
Entity Tax Identification Number	34-1755769
Entity Address, Address Line One	225 West Washington Street
Entity Address, City or Town	Indianapolis
Entity Address, State or Province	IN
Entity Address, Postal Zip Code	46204
City Area Code	317
Local Phone Number	636-1600
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction	false
Entity Shell Company	false
Auditor Firm ID	42
Auditor Name	Ernst & Young LLP
Auditor Location	Indianapolis, Indiana
Entity Central Index Key	0001022344
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Amendment Flag	false