Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2019	Feb. 13, 2020	Jun. 30, 2019
Cover Page [Abstract]
Document Type	10-K
Document Period End Date	Dec. 31, 2019
Entity File Number	1-12616
Entity Registrant Name	SUN COMMUNITIES INC
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	38-2730780
Entity Address, Address Line One	27777 Franklin Rd,
Entity Address, Address Line Two	Suite 200,
Entity Address, City or Town	Southfield,
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	48034
City Area Code	248
Local Phone Number	208-2500
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	SUI
Security Exchange Name	NYSE
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
Entity Shell Company	false
Entity Public Float			$ 11,363,494,077
Entity Common Stock, Shares Outstanding		93,319,200
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Central Index Key	0000912593
Current Fiscal Year End Date	--12-31
Document Annual Report	true
Document Transition Report	false