Real Estate Acquisitions, Pro Forma (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Land			$ 7,700
Document Period End Date	Mar. 31, 2020
Total revenues	$ 92
Net income attributable to Sun Communities, Inc. common stockholders	(106)
Acquisitions - 2019 [Member]
Business Acquisition [Line Items]
Total revenues		$ 288,136
Net income attributable to Sun Communities, Inc. common stockholders		$ 40,078
Net income per share attributable to Sun Communities, Inc. common stockholders - basic		$ 0.47
Net income per share attributable to Sun Communities, Inc. common stockholders - diluted		$ 0.47
Acquisitions - 2020 [Member]
Business Acquisition [Line Items]
Total revenues	310,711
Net income attributable to Sun Communities, Inc. common stockholders	$ (14,776)
Net income per share attributable to Sun Communities, Inc. common stockholders - basic	$ (0.16)
Net income per share attributable to Sun Communities, Inc. common stockholders - diluted	$ (0.16)