Real Estate Acquisitions, Pro Forma (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Revenue	$ 42,715
Net income	10,050
Acquisitions - 2018 [Member]
Business Acquisition [Line Items]
Revenue	1,298,096	$ 1,194,093
Net income	$ 166,446	$ 120,891
Business Acquisition, Pro Forma Earnings Per Share, Basic	$ 1.88	$ 1.49
Net income attributable to Sun Communities, Inc. shareholders - diluted (in dollars per share)	$ 1.87	$ 1.47