Consolidated Variable Interest Entities - Narrative (Details)	Jun. 30, 2023 Rate	Dec. 31, 2022 Rate
Disclosure of Variable Interest Entities [Abstract]
Assets related to VIEs, percentage	4.80%	4.50%
Liabilities related to VIEs, percentage	1.40%	0.90%
Equity interests and noncontrolling interests related to VIEs, percentage	1.00%	1.00%

Variable Interest Entity as a Percentage of Consolidated Liabilities

No definition available.

Name:	sui_VariableInterestEntityasaPercentageofConsolidatedLiabilities
Namespace Prefix:	sui_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	instant