$SUI
SUN COMMUNITIES INC Stock $sui

$sui Overview Financials Valuation SEC Filings Company Website

2018 Q3 Form 10-K Financial Statement

#000091259319000034 Filed on February 21, 2019

Income Statement

Concept	2018 Q3	2017 Q4	2017 Q3
Revenue	$323.4M	$242.0M	$268.2M
YoY Change	20.57%	10.7%	7.43%
Cost Of Revenue	$33.69M	$101.6M	$114.2M
YoY Change	-70.5%	7.4%	7.43%
Gross Profit	$289.7M	$140.5M	$154.1M
YoY Change	88.01%	13.22%	7.46%
Gross Profit Margin	89.58%	58.05%	57.45%
Selling, General & Admin	$23.81M	$30.90M	$21.46M
YoY Change	10.91%	69.78%	11.69%
% of Gross Profit	8.22%	21.99%	13.93%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$71.98M	$71.80M	$64.23M
YoY Change	12.07%	17.32%	4.47%
% of Gross Profit	24.85%	51.1%	41.68%
Operating Expenses	$23.81M	$102.7M	$21.46M
YoY Change	10.91%	27.9%	11.69%
Operating Profit	$175.8M	$37.80M	$147.0M
YoY Change	19.64%	-13.7%	7.44%
Interest Expense	$33.52M	-$33.50M	$32.09M
YoY Change	4.48%	6.69%	-5.07%
% of Operating Profit	19.06%	-88.62%	21.83%
Other Income/Expense, Net	$1.231M	$3.400M	$3.345M
YoY Change	-63.2%	-158.62%
Pretax Income	$50.29M	$7.176M	$25.49M
YoY Change	97.28%	1.57%	10.78%
Income Tax	$213.0K	$500.0K	-$38.00K
% Of Pretax Income	0.42%	6.97%	-0.15%
Net Earnings	$46.06M	$7.438M	$24.12M
YoY Change	91.0%	-564.88%	27.61%
Net Earnings / Revenue	14.24%	3.07%	8.99%
Basic Earnings Per Share	$0.56	$0.09	$0.31
Diluted Earnings Per Share	$0.56	$0.09	$0.31
COMMON SHARES
Basic Shares Outstanding	81.60M shares	79.34M shares	78.37M shares
Diluted Shares Outstanding	82.08M shares		78.81M shares

Balance Sheet

Concept	2018 Q3	2017 Q4	2017 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$114.0M	$10.00M	$137.0M
YoY Change	-16.79%	25.0%	95.71%
Cash & Equivalents	$113.6M	$10.13M	$137.4M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory	$41.00M	$30.00M	$26.00M
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$317.0M	$216.0M	$345.0M
YoY Change	-8.12%	10.2%	25.91%
LONG-TERM ASSETS
Property, Plant & Equipment	$6.054B	$5.645B	$5.574B
YoY Change	8.61%	3.22%	2.97%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets	$6.337B	$5.896B	$5.813B
YoY Change	9.01%	3.9%	3.23%
TOTAL ASSETS
Total Short-Term Assets	$317.0M	$216.0M	$345.0M
Total Long-Term Assets	$6.337B	$5.896B	$5.813B
Total Assets	$6.654B	$6.112B	$6.158B
YoY Change	8.05%	4.11%	4.29%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$63.00M	$55.00M	$57.00M
YoY Change	10.53%	5.77%	11.76%
LONG-TERM LIABILITIES
Long-Term Debt	$3.005B	$3.079B	$3.003B
YoY Change	0.07%	-1.0%	-3.22%
Other Long-Term Liabilities	$299.0M	$271.0M	$291.0M
YoY Change	2.75%	-3.21%	5.43%
Total Long-Term Liabilities	$3.304B	$3.350B	$3.294B
YoY Change	0.3%	-1.18%	-2.52%
TOTAL LIABILITIES
Total Short-Term Liabilities	$63.00M	$55.00M	$57.00M
Total Long-Term Liabilities	$3.304B	$3.350B	$3.294B
Total Liabilities	$3.367B	$3.405B	$3.351B
YoY Change	0.49%	-1.06%	-2.3%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock	$864.0K	$797.0K	$793.0K
YoY Change	8.95%	8.88%	8.63%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$3.159B	$2.598B	$2.696B
YoY Change
Total Liabilities & Shareholders Equity	$6.654B	$6.112B	$6.158B
YoY Change	8.05%	4.11%	4.29%

Cashflow Statement

Concept	2018 Q3	2017 Q4	2017 Q3
OPERATING ACTIVITIES
Net Income	$46.06M	$7.438M	$24.12M
YoY Change	91.0%	-564.88%	27.61%
Depreciation, Depletion And Amortization	$71.98M	$71.80M	$64.23M
YoY Change	12.07%	17.32%	4.47%
Cash From Operating Activities	$102.5M	$31.90M	$69.50M
YoY Change	47.48%	-37.7%	13.38%
INVESTING ACTIVITIES
Capital Expenditures	-$45.30M	-$50.10M	-$30.40M
YoY Change	49.01%	252.82%	159.83%
Acquisitions
YoY Change
Other Investing Activities	-$92.30M	-$83.90M	-$70.20M
YoY Change	31.48%	41.25%	16.03%
Cash From Investing Activities	-$137.6M	-$133.9M	-$100.6M
YoY Change	36.78%	81.93%	39.14%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$499.9M
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	127.2M	-31.80M	-73.90M
YoY Change	-272.12%	-12.88%	-248.99%
NET CHANGE
Cash From Operating Activities	102.5M	31.90M	69.50M
Cash From Investing Activities	-137.6M	-133.9M	-100.6M
Cash From Financing Activities	127.2M	-31.80M	-73.90M
Net Change In Cash	92.10M	-133.8M	-105.0M
YoY Change	-187.71%	127.16%	-372.02%
FREE CASH FLOW
Cash From Operating Activities	$102.5M	$31.90M	$69.50M
Capital Expenditures	-$45.30M	-$50.10M	-$30.40M
Free Cash Flow	$147.8M	$82.00M	$99.90M
YoY Change	47.95%	25.38%	36.85%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2018	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
CY2018	dei	Entity Central Index Key EntityCentralIndexKey	0000912593
CY2018	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2018	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2018	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2018	dei	Entity Shell Company EntityShellCompany	false
CY2018	dei	Entity Small Business EntitySmallBusiness	false
CY2018	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2018	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2018	dei	Trading Symbol TradingSymbol	SUI
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CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2018	dei	Document Type DocumentType	10-K
CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-12-31
CY2018	dei	Entity Registrant Name EntityRegistrantName	SUN COMMUNITIES INC
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CY2018	us-gaap	Profit Loss ProfitLoss	120158000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	81819000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	31471000	USD
CY2018	sui	Preferredreturnto Series A1preferred O Punits PreferredreturntoSeriesA1preferredOPunits	4486000	USD
CY2017	sui	Preferredreturnto Series A1preferred O Punits PreferredreturntoSeriesA1preferredOPunits	4581000	USD
CY2016	sui	Preferredreturnto Series A1preferred O Punits PreferredreturntoSeriesA1preferredOPunits	5006000	USD
CY2018	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	8443000	USD
CY2017	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	5055000	USD
CY2016	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	150000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	107229000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	72183000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	26315000	USD
CY2018	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1736000	USD
CY2017	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	7162000	USD
CY2016	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	8946000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	105493000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	65021000	USD
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	17369000	USD
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	81387000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	76084000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	65856000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	82040000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	76711000	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	66321000	shares
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.29
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.85
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.27
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.29
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.85
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26
CY2018	us-gaap	Profit Loss ProfitLoss	120158000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	81819000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	31471000	USD
CY2017	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain Or Loss BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss	3035000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-5878000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	4527000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-3401000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	114280000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	86346000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	28070000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	8171000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	5299000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-70000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	106109000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	81047000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	28140000	USD
CY2015Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	82797000	USD
CY2016	us-gaap	Temporary Equity Net Income TemporaryEquityNetIncome	90000	USD
CY2016	sui	Temporary Equity Dividends TemporaryEquityDividends	-1192000	USD
CY2016Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	66944000	USD
CY2017	us-gaap	Temporary Equity Accretion To Redemption Value TemporaryEquityAccretionToRedemptionValue	5166000	USD
CY2017	us-gaap	Temporary Equity Net Income TemporaryEquityNetIncome	205000	USD
CY2017	sui	Temporary Equity Dividends TemporaryEquityDividends	-845000	USD
CY2017Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	43066000	USD
CY2018	sui	Temporary Equity Acquisition Of Equity Interests TemporaryEquityAcquisitionOfEquityInterests	21976000	USD
CY2018	us-gaap	Temporary Equity Net Income TemporaryEquityNetIncome	241000	USD
CY2018	sui	Temporary Equity Dividends TemporaryEquityDividends	-674000	USD
CY2018Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	63592000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	120158000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	81819000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	31471000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	9376000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	9338000	USD
CY2016	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	11224000	USD
CY2018	sui	Gain Losson Acquisitionof Real Estate Property GainLossonAcquisitionofRealEstateProperty	0	USD
CY2017	sui	Gain Losson Acquisitionof Real Estate Property GainLossonAcquisitionofRealEstateProperty	0	USD
CY2016	sui	Gain Losson Acquisitionof Real Estate Property GainLossonAcquisitionofRealEstateProperty	510000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-8234000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	6146000	USD
CY2016	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-5005000	USD
CY2018	sui	Remeasurement Of Marketable Securities RemeasurementOfMarketableSecurities	-3639000	USD
CY2017	sui	Remeasurement Of Marketable Securities RemeasurementOfMarketableSecurities	0	USD
CY2016	sui	Remeasurement Of Marketable Securities RemeasurementOfMarketableSecurities	0	USD
CY2018	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain Or Loss BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss	2336000	USD
CY2016	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain Or Loss BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss	-181000	USD
CY2018	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	0	USD
CY2017	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	742000	USD
CY2016	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	0	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	15066000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	12695000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	9557000	USD
CY2018	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	274432000	USD
CY2017	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	256193000	USD
CY2016	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	218669000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-507000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-582000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-400000	USD
CY2018	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	7399000	USD
CY2017	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	7402000	USD
CY2016	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	6570000	USD
CY2018	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	-7821000	USD
CY2017	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	-9548000	USD
CY2016	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	-10693000	USD
CY2018	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	3867000	USD
CY2017	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2910000	USD
CY2016	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2160000	USD
CY2018	sui	Amortizationof Ground Lease AmortizationofGroundLease	1638000	USD
CY2017	sui	Amortizationof Ground Lease AmortizationofGroundLease	1914000	USD
CY2016	sui	Amortizationof Ground Lease AmortizationofGroundLease	600000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-2024000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-6019000	USD
CY2016	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1127000	USD
CY2018	us-gaap	Payments Of Distributions To Affiliates PaymentsOfDistributionsToAffiliates	0	USD
CY2017	us-gaap	Payments Of Distributions To Affiliates PaymentsOfDistributionsToAffiliates	0	USD
CY2016	us-gaap	Payments Of Distributions To Affiliates PaymentsOfDistributionsToAffiliates	500000	USD
CY2018	us-gaap	Increase Decrease In Notes Receivables IncreaseDecreaseInNotesReceivables	2299000	USD
CY2017	us-gaap	Increase Decrease In Notes Receivables IncreaseDecreaseInNotesReceivables	26193000	USD
CY2016	us-gaap	Increase Decrease In Notes Receivables IncreaseDecreaseInNotesReceivables	20933000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	40304000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	33031000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-30880000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	4098000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-9034000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-7365000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	298754000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	363114000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	257983000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	241455000	USD
CY2018	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	389399000	USD
CY2017	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	288537000	USD
CY2016	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	223429000	USD
CY2018	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	320268000	USD
CY2017	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	120377000	USD
CY2016	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	1487593000	USD
CY2018	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	0	USD
CY2017	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	0	USD
CY2016	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	500000	USD
CY2018	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	55855000	USD
CY2017	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	8575000	USD
CY2016	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	4709000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2016	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	88696000	USD
CY2018	sui	Issuanceofnotesandotherreceivables Issuanceofnotesandotherreceivables	216000	USD
CY2017	sui	Issuanceofnotesandotherreceivables Issuanceofnotesandotherreceivables	3918000	USD
CY2016	sui	Issuanceofnotesandotherreceivables Issuanceofnotesandotherreceivables	10633000	USD
CY2018	sui	Repaymentof Notesand Other Receivables RepaymentofNotesandOtherReceivables	4312000	USD
CY2017	sui	Repaymentof Notesand Other Receivables RepaymentofNotesandOtherReceivables	2615000	USD
CY2016	sui	Repaymentof Notesand Other Receivables RepaymentofNotesandOtherReceivables	13238000	USD
CY2018	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	84027000	USD
CY2017	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	0	USD
CY2016	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	0	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-733743000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-401642000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1614512000	USD
CY2018	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	623540000	USD
CY2017	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	487677000	USD
CY2016	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	750534000	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	1542677000	USD
CY2017	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	661000000	USD
CY2016	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	580754000	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	1456486000	USD
CY2017	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	719536000	USD
CY2016	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	505409000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	250000000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	124427000	USD
CY2016	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	230785000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	185153000	USD
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	964252000	USD
CY2018	sui	Prepayment Penalty Debt PrepaymentPenaltyDebt	2024000	USD
CY2017	sui	Prepayment Penalty Debt PrepaymentPenaltyDebt	6019000	USD
CY2016	sui	Prepayment Penalty Debt PrepaymentPenaltyDebt	1127000	USD
CY2018	sui	Distributions To Stockholders Op Unit Holders And Preferred Op Unit Holders DistributionsToStockholdersOpUnitHoldersAndPreferredOpUnitHolders	242813000	USD
CY2017	sui	Distributions To Stockholders Op Unit Holders And Preferred Op Unit Holders DistributionsToStockholdersOpUnitHoldersAndPreferredOpUnitHolders	224483000	USD
CY2016	sui	Distributions To Stockholders Op Unit Holders And Preferred Op Unit Holders DistributionsToStockholdersOpUnitHoldersAndPreferredOpUnitHolders	193740000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	409905000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	141557000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1338970000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-523000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	298000	USD
CY2016	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-73000	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	38753000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-1804000	USD
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-34160000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	23509000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	25313000	USD
CY2015Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	59473000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	62262000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	23509000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	25313000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	126153000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	124046000	USD
CY2016	us-gaap	Interest Paid Net InterestPaidNet	121480000	USD
CY2018	us-gaap	Distributions On Mandatorily Redeemable Securities DistributionsOnMandatorilyRedeemableSecurities	2551000	USD
CY2017	us-gaap	Distributions On Mandatorily Redeemable Securities DistributionsOnMandatorilyRedeemableSecurities	3114000	USD
CY2016	us-gaap	Distributions On Mandatorily Redeemable Securities DistributionsOnMandatorilyRedeemableSecurities	3152000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	461000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-194000	USD
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	452000	USD
CY2018	sui	Noncash Investing And Financing Activities Reduction In Secured Borrowing Balance NoncashInvestingAndFinancingActivitiesReductionInSecuredBorrowingBalance	21451000	USD
CY2017	sui	Noncash Investing And Financing Activities Reduction In Secured Borrowing Balance NoncashInvestingAndFinancingActivitiesReductionInSecuredBorrowingBalance	23449000	USD
CY2016	sui	Noncash Investing And Financing Activities Reduction In Secured Borrowing Balance NoncashInvestingAndFinancingActivitiesReductionInSecuredBorrowingBalance	19734000	USD
CY2018	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	7889000	USD
CY2017	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	3267000	USD
CY2016	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	9626000	USD
CY2018	us-gaap	Dividends Dividends	1515000	USD
CY2017	us-gaap	Dividends Dividends	3556000	USD
CY2016	us-gaap	Dividends Dividends	5933000	USD
CY2018	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	675000	USD
CY2017	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	4720000	USD
CY2016	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	11503000	USD
CY2018	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	0	USD
CY2017	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	4114000	USD
CY2016	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	0	USD
CY2018	sui	Settlementofmembershipinterest Settlementofmembershipinterest	0	USD
CY2017	sui	Settlementofmembershipinterest Settlementofmembershipinterest	28410000	USD
CY2016	sui	Settlementofmembershipinterest Settlementofmembershipinterest	225000000	USD
CY2018	sui	Land Capital Lease LandCapitalLease	21976000	USD
CY2017	sui	Land Capital Lease LandCapitalLease	0	USD
CY2016	sui	Land Capital Lease LandCapitalLease	0	USD
CY2018	sui	Stock Issued During Period Value New Issues Series A3 Preferred Op Units StockIssuedDuringPeriodValueNewIssuesSeriesA3PreferredOPUnits	3120000	USD
CY2017	sui	Stock Issued During Period Value New Issues Series A3 Preferred Op Units StockIssuedDuringPeriodValueNewIssuesSeriesA3PreferredOPUnits	4592000	USD
CY2016	sui	Stock Issued During Period Value New Issues Series A3 Preferred Op Units StockIssuedDuringPeriodValueNewIssuesSeriesA3PreferredOPUnits	0	USD
CY2018	sui	Stock Issued During Period Value New Issues Series A4 Preferred Op Units StockIssuedDuringPeriodValueNewIssuesSeriesA4PreferredOPUnits	0	USD
CY2017	sui	Stock Issued During Period Value New Issues Series A4 Preferred Op Units StockIssuedDuringPeriodValueNewIssuesSeriesA4PreferredOPUnits	0	USD
CY2016	sui	Stock Issued During Period Value New Issues Series A4 Preferred Stock StockIssuedDuringPeriodValueNewIssuesSeriesA4PreferredStock	9830000	USD
CY2018Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	371	properties
CY2018Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	31	properties
CY2018Q4	us-gaap	Number Of Units In Real Estate Property NumberOfUnitsInRealEstateProperty	128454	sites
CY2018	us-gaap	Use Of Estimates UseOfEstimates	Use of Estimates<div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div>The preparation of financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions related to the reported amounts included in our Consolidated Financial Statements and accompanying footnotes thereto. Actual results could differ from those estimates.
CY2018Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	49500000	USD
CY2017Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	17700000	USD
CY2016	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	5000000.0	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	12000000.0	USD
CY2018Q4	us-gaap	Marketable Securities MarketableSecurities	49000000.0	USD
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	13400000	USD
CY2018	sui	Cost Method Investment Policy Maximum Percentage Of Ownership CostMethodInvestmentPolicyMaximumPercentageOfOwnership	0.050
CY2018	us-gaap	Advertising Cost Policy Expensed Advertising Cost AdvertisingCostPolicyExpensedAdvertisingCost	Advertising Costs<div style="line-height:120%;text-align:justify;font-size:8pt;"><span style="font-family:inherit;font-size:8pt;"><br/></span></div><span style="font-family:inherit;font-size:10pt;">Advertising costs are expensed as incurred. As of </span><span style="font-family:inherit;font-size:10pt;">December 31, 2018</span><span style="font-family:inherit;font-size:10pt;">, </span><span style="font-family:inherit;font-size:10pt;">2017</span><span style="font-family:inherit;font-size:10pt;"> and </span><span style="font-family:inherit;font-size:10pt;">2016</span><span style="font-family:inherit;font-size:10pt;">, we had advertising costs of </span><span style="font-family:inherit;font-size:10pt;"><span>$6.2 million</span></span><span style="font-family:inherit;font-size:10pt;">, </span><span style="font-family:inherit;font-size:10pt;"><span>$5.9 million</span></span><span style="font-family:inherit;font-size:10pt;"> and </span><span style="font-family:inherit;font-size:10pt;"><span>$4.2 million</span></span>, respectively.
CY2018	us-gaap	Advertising Expense AdvertisingExpense	6200000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	5900000	USD
CY2016	us-gaap	Advertising Expense AdvertisingExpense	4200000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	8400000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-5900000	USD
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	825973000	USD
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	742228000	USD
CY2016	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	620917000	USD
CY2018	sui	Revenue From Home Sales RevenueFromHomeSales	166031000	USD
CY2017	sui	Revenue From Home Sales RevenueFromHomeSales	127408000	USD
CY2016	sui	Revenue From Home Sales RevenueFromHomeSales	110507000	USD
CY2018	sui	Rental Home Revenue RentalHomeRevenue	53657000	USD
CY2017	sui	Rental Home Revenue RentalHomeRevenue	50549000	USD
CY2016	sui	Rental Home Revenue RentalHomeRevenue	47780000	USD
CY2018	sui	Ancillary Revenue AncillaryRevenue	54107000	USD
CY2017	sui	Ancillary Revenue AncillaryRevenue	37511000	USD
CY2016	sui	Ancillary Revenue AncillaryRevenue	33424000	USD
CY2018	us-gaap	Interest Income Operating InterestIncomeOperating	20853000	USD
CY2017	us-gaap	Interest Income Operating InterestIncomeOperating	21180000	USD
CY2016	us-gaap	Interest Income Operating InterestIncomeOperating	18113000	USD
CY2018	sui	Brokeragecommissionsandotherincomenet Brokeragecommissionsandotherincomenet	6204000	USD
CY2017	sui	Brokeragecommissionsandotherincomenet Brokeragecommissionsandotherincomenet	3694000	USD
CY2016	sui	Brokeragecommissionsandotherincomenet Brokeragecommissionsandotherincomenet	3037000	USD
CY2018	us-gaap	Revenues Revenues	1126825000	USD
CY2017	us-gaap	Revenues Revenues	982570000	USD
CY2016	us-gaap	Revenues Revenues	833778000	USD
CY2018	us-gaap	Contract With Customer Asset Reclassified To Receivable ContractWithCustomerAssetReclassifiedToReceivable	16100000	USD
CY2017	us-gaap	Contract With Customer Asset Reclassified To Receivable ContractWithCustomerAssetReclassifiedToReceivable	13800000	USD
CY2018Q4	us-gaap	Number Of Units In Real Estate Property NumberOfUnitsInRealEstateProperty	4882	site
CY2018Q4	sui	Numberof Unitsin Real Estate Property Development Sites NumberofUnitsinRealEstatePropertyDevelopmentSites	1166	development_site
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	346986000	USD
CY2018Q4	sui	Business Combination Recognized Identifiable Assets Acquiredand Liabilities Assumed Current Assets Liabilities Inventory BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsLiabilitiesInventory	17199000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Noncurrent Liabilities Long Term Debt BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt	3120000	USD
CY2018Q4	sui	Business Combination Recognized Identifiable Assets Acquiredand Liabilities Assumed Other Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOtherLiabilities	11990000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet	349075000	USD
CY2018	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	291822000	USD
CY2018	sui	Business Combination Consideration Transferred Other Liabilities Incurred Net BusinessCombinationConsiderationTransferredOtherLiabilitiesIncurredNet	35277000	USD
CY2018Q4	sui	Numberof Unitsin Real Estate Property Land Development Sites NumberofUnitsinRealEstatePropertyLandDevelopmentSites	2275	site
CY2018	us-gaap	Payments To Acquire Land PaymentsToAcquireLand	14000000.0	USD
CY2018	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	41937000	USD
CY2017	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	9800000	USD
CY2018	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	6718000	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	500000	USD
CY2016	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	31900000	USD
CY2017Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	140959000	USD
CY2017Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Receivables BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables	23000	USD
CY2017Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Inventory BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory	488000	USD
CY2017Q4	sui	Business Combination Recognized Identifiable Assets Acquiredand Liabilities Assumed Current Assets Liabilities Inventory BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsLiabilitiesInventory	3260000	USD
CY2017Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet	144730000	USD
CY2017	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	116218000	USD
CY2017	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	28410000	USD
CY2017	us-gaap	Business Combination Consideration Transferred Liabilities Incurred BusinessCombinationConsiderationTransferredLiabilitiesIncurred	5102000	USD
CY2017	sui	Business Combination Accounts Receivable Due From Acquiree BusinessCombinationAccountsReceivableDueFromAcquiree	5000000	USD
CY2017	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	144730000	USD
CY2017Q4	sui	Numberof Unitsin Real Estate Property Land Development Sites NumberofUnitsinRealEstatePropertyLandDevelopmentSites	841	development_site
CY2018Q4	sui	Other Receivables For Rent Water Sewer Usage OtherReceivablesForRentWaterSewerUsage	7100000	USD
CY2018Q4	sui	Allowance For Rent Water Sewer Usage Receivables AllowanceForRentWaterSewerUsageReceivables	1500000	USD
CY2018Q4	sui	Home Sale Proceeds HomeSaleProceeds	16100000	USD
CY2018Q4	sui	Insurance Receivables InsuranceReceivables	24100000	USD
CY2017Q4	sui	Other Receivables For Rent Water Sewer Usage OtherReceivablesForRentWaterSewerUsage	7000000.0	USD
CY2017Q4	sui	Allowance For Rent Water Sewer Usage Receivables AllowanceForRentWaterSewerUsageReceivables	1500000	USD
CY2017Q4	sui	Home Sale Proceeds HomeSaleProceeds	13800000	USD
CY2017Q4	sui	Insurance Receivables InsuranceReceivables	26900000	USD
CY2018Q2	sui	Ground Leases Percent Of Land Acquired GroundLeasesPercentOfLandAcquired	0.50
CY2017Q4	sui	Ground Leases Percent Of Land Acquired GroundLeasesPercentOfLandAcquired	0.250
CY2017Q4	sui	Ground Leases Option To Purchase Land Percent GroundLeasesOptionToPurchaseLandPercent	0.250
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	151248000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	62952000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	134888000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	48436000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14241000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14922000	USD
CY2016	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	12694000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	14630000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	12902000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	12510000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	7908000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	4533000	USD
CY2018Q4	us-gaap	Variable Interest Entity Consolidated Carrying Amount Assets VariableInterestEntityConsolidatedCarryingAmountAssets	327980000	USD
CY2017Q4	us-gaap	Variable Interest Entity Consolidated Carrying Amount Assets VariableInterestEntityConsolidatedCarryingAmountAssets	51852000	USD
CY2018Q4	sui	Variable Interest Entityasa Percentageof Consolidated Assets VariableInterestEntityasaPercentageofConsolidatedAssets	0.049	Rate
CY2017Q4	sui	Variable Interest Entityasa Percentageof Consolidated Assets VariableInterestEntityasaPercentageofConsolidatedAssets	0.008	Rate
CY2018Q4	sui	Variable Interest Entityasa Percentageof Consolidated Liabilities VariableInterestEntityasaPercentageofConsolidatedLiabilities	0.026	Rate
CY2017Q4	sui	Variable Interest Entityasa Percentageof Consolidated Liabilities VariableInterestEntityasaPercentageofConsolidatedLiabilities	0.012	Rate
CY2018Q4	sui	Vi Easa Percentageof Total Equity VIEasaPercentageofTotalEquity	0.010
CY2018Q4	us-gaap	Line Of Credit LineOfCredit	128000000	USD
CY2018	sui	Debtweightedaveragetomaturitylength Debtweightedaveragetomaturitylength	P9Y
CY2017	sui	Debtweightedaveragetomaturitylength Debtweightedaveragetomaturitylength	P8Y10M24D
CY2018Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.045
CY2017Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.045
CY2018Q2	sui	Numberof Real Estate Units Released NumberofRealEstateUnitsReleased	11	community
CY2018Q1	sui	Numberof Real Estate Units Released NumberofRealEstateUnitsReleased	3	community
CY2017Q2	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-300000	USD
CY2018Q2	sui	Financial Instruments Subjectto Mandatory Redemption Rate Of Return FinancialInstrumentsSubjecttoMandatoryRedemptionRateOfReturn	0.060
CY2017Q1	sui	Numberof Real Estate Units Released NumberofRealEstateUnitsReleased	1	community
CY2017Q1	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-500000	USD
CY2018Q4	us-gaap	Secured Debt SecuredDebt	2800000000	USD
CY2018Q2	sui	Financial Instruments Subjectto Mandatory Redemption Term FinancialInstrumentsSubjecttoMandatoryRedemptionTerm	P7Y
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	3121947000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	66104000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	123454000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	463694000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	180633000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	367276000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1920786000	USD
CY2018Q3	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	5060000	shares
CY2018Q3	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	499900000	USD
CY2017Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	4830000	shares
CY2017Q2	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	408900000	USD
CY2018	sui	Aggregate Valueof Sharestobe Issuedin Accordanceto Sales Agreement AggregateValueofSharestobeIssuedinAccordancetoSalesAgreement	450000000.0	USD
CY2018	sui	Commission Maximum Percentageof Gross Sales Price Per Share Accordingto Sales Agreement CommissionMaximumPercentageofGrossSalesPricePerShareAccordingtoSalesAgreement	0.020
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	163800000	USD
CY2018Q3	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	398516000	shares
CY2018Q3	sui	Shares Issued Weighted Average Price Per Share SharesIssuedWeightedAveragePricePerShare	100.19
CY2018Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	39400000	USD
CY2018Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	1008699000	shares
CY2018Q2	sui	Shares Issued Weighted Average Price Per Share SharesIssuedWeightedAveragePricePerShare	92.98
CY2018Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	92600000	USD
CY2017Q4	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	321800000	shares
CY2017Q4	sui	Shares Issued Weighted Average Price Per Share SharesIssuedWeightedAveragePricePerShare	93.33
CY2017Q4	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	29700000	USD
CY2017Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	400000000	shares
CY2017Q2	sui	Shares Issued Weighted Average Price Per Share SharesIssuedWeightedAveragePricePerShare	85.01
CY2017Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	33600000	USD
CY2017Q1	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	280502	shares
CY2017Q1	sui	Shares Issued Weighted Average Price Per Share SharesIssuedWeightedAveragePricePerShare	76.47
CY2017Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	21200000	USD
CY2016Q4	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	19498	shares
CY2016Q4	sui	Shares Issued Weighted Average Price Per Share SharesIssuedWeightedAveragePricePerShare	75.90
CY2016Q4	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1500000	USD
CY2016Q3	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	620828	shares
CY2016Q3	sui	Shares Issued Weighted Average Price Per Share SharesIssuedWeightedAveragePricePerShare	76.81
CY2016Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	47100000	USD
CY2016Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	485000	shares
CY2016Q2	sui	Shares Issued Weighted Average Price Per Share SharesIssuedWeightedAveragePricePerShare	71.86
CY2016Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	34400000	USD
CY2017Q2	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	2000000.0	USD
CY2018Q4	us-gaap	Temporary Equity Redemption Price Per Share TemporaryEquityRedemptionPricePerShare	25.00
CY2017Q4	sui	Temporary Equity Redemption Price Per Share Including Accruedand Unpaid Dividends TemporaryEquityRedemptionPricePerShareIncludingAccruedandUnpaidDividends	25.14349
CY2017Q4	us-gaap	Stock Redeemed Or Called During Period Value StockRedeemedOrCalledDuringPeriodValue	85500000	USD
CY2017Q4	us-gaap	Stock Redeemed Or Called During Period Shares StockRedeemedOrCalledDuringPeriodShares	3400000	shares
CY2018	sui	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Percent Expected To Vest SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsPercentExpectedToVest	0.748
CY2017	sui	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Percent Expected To Vest SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsPercentExpectedToVest	0.913
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	15100000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	12700000	USD
CY2016	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9600000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	11700000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	9300000	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	7600000	USD
CY2017Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	37500000	USD
CY2018	sui	Employee Service Sharebased Compensation Nonvested Awards Expected Compensation Cost To Be Recognized In Next Twelve Months EmployeeServiceSharebasedCompensationNonvestedAwardsExpectedCompensationCostToBeRecognizedInNextTwelveMonths	13000000.0	USD
CY2018	sui	Employee Service Sharebased Compensation Nonvested Awards Expected Compensation Cost To Be Recognized In Two Years EmployeeServiceSharebasedCompensationNonvestedAwardsExpectedCompensationCostToBeRecognizedInTwoYears	12000000.0	USD
CY2018	sui	Employee Service Sharebased Compensation Nonvested Awards Expected Compensation Cost To Be Recognized In Three Years EmployeeServiceSharebasedCompensationNonvestedAwardsExpectedCompensationCostToBeRecognizedInThreeYears	6900000	USD
CY2018	sui	Employee Service Sharebased Compensation Nonvested Awards Expected Compensation Cost To Be Recognized After Three Years EmployeeServiceSharebasedCompensationNonvestedAwardsExpectedCompensationCostToBeRecognizedAfterThreeYears	5600000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	120158000	USD
CY2018	sui	Preferredreturnto Series A1preferred O Punits PreferredreturntoSeriesA1preferredOPunits	4486000	USD
CY2018	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	8443000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	107229000	USD
CY2018	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1736000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	105493000	USD
CY2017	sui	Other Revenues Segment OtherRevenuesSegment	24874000	USD
CY2017	us-gaap	Selling Expense SellingExpense	12457000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	74232000	USD
CY2017	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	9801000	USD
CY2017	us-gaap	Loss From Catastrophes LossFromCatastrophes	8352000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	261536000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-6019000	USD
CY2017	us-gaap	Interest Expense InterestExpense	127128000	USD
CY2017	us-gaap	Interest Expense Other InterestExpenseOther	3114000	USD
CY2017	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	8982000	USD
CY2017	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	446000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	582000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	81819000	USD
CY2017	sui	Preferredreturnto Series A1preferred O Punits PreferredreturntoSeriesA1preferredOPunits	4581000	USD
CY2017	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	5055000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	72183000	USD
CY2017	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	7162000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	65021000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	31471000	USD
CY2016	sui	Preferredreturnto Series A1preferred O Punits PreferredreturntoSeriesA1preferredOPunits	5006000	USD
CY2016	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	150000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	26315000	USD
CY2016	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	8946000	USD
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	17369000	USD
CY2018Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	6118316000	USD
CY2017Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	5645354000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	50311000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	10127000	USD
CY2018Q4	us-gaap	Inventory Finished Homes InventoryFinishedHomes	49199000	USD
CY2017Q4	us-gaap	Inventory Finished Homes InventoryFinishedHomes	30430000	USD
CY2018Q4	us-gaap	Accounts And Notes Receivable Net AccountsAndNotesReceivableNet	160077000	USD
CY2017Q4	us-gaap	Accounts And Notes Receivable Net AccountsAndNotesReceivableNet	163496000	USD
CY2018Q4	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	106924000	USD
CY2017Q4	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	128246000	USD
CY2018Q4	us-gaap	Other Assets OtherAssets	225199000	USD
CY2017Q4	us-gaap	Other Assets OtherAssets	134304000	USD
CY2018Q4	us-gaap	Assets Assets	6710026000	USD
CY2017Q4	us-gaap	Assets Assets	6111957000	USD
CY2018	sui	Minimum Percent Of Income From Qualifying Sources To Allow For Real Estate Investment Trust Classification MinimumPercentOfIncomeFromQualifyingSourcesToAllowForRealEstateInvestmentTrustClassification	0.950
CY2018	sui	Required Minimum Percent Of Taxable Income Distributed To Stock Holders RequiredMinimumPercentOfTaxableIncomeDistributedToStockHolders	0.900
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.80
CY2018	sui	Percent Of Total Dividends Paid PercentOfTotalDividendsPaid	1.000
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.66
CY2017	sui	Percent Of Total Dividends Paid PercentOfTotalDividendsPaid	1.000
CY2016	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.60
CY2016	sui	Percent Of Total Dividends Paid PercentOfTotalDividendsPaid	1.000
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-102000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-181000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	701000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	675000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	11000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-11000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	-4000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	-48000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-518000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-571000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	88000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-136000	USD
CY2018	sui	Income Loss Attributableto Taxable Subsidiaries IncomeLossAttributabletoTaxableSubsidiaries	-7299000	USD
CY2017	sui	Income Loss Attributableto Taxable Subsidiaries IncomeLossAttributabletoTaxableSubsidiaries	-17404000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-1534000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-5918000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.340
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	0	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-3000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0
CY2018	sui	Effective Income Tax Rate Reconciliation Alternative Minimum Tax Amount EffectiveIncomeTaxRateReconciliationAlternativeMinimumTaxAmount	0	USD
CY2018	sui	Effective Income Tax Rate Reconciliation Alternative Minimum Tax Percent EffectiveIncomeTaxRateReconciliationAlternativeMinimumTaxPercent	0
CY2017	sui	Effective Income Tax Rate Reconciliation Alternative Minimum Tax Amount EffectiveIncomeTaxRateReconciliationAlternativeMinimumTaxAmount	0	USD
CY2017	sui	Effective Income Tax Rate Reconciliation Alternative Minimum Tax Percent EffectiveIncomeTaxRateReconciliationAlternativeMinimumTaxPercent	0
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-112000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.015
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	318000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.018
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	2885000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.395
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-21322000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	1.225
CY2018	sui	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Amount EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsAmount	0	USD
CY2018	sui	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Percent EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsPercent	0
CY2017	sui	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Amount EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsAmount	25885000	USD
CY2017	sui	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Percent EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsPercent	-1.487
CY2018	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-1576000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.216
CY2017	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	360000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.021
CY2018	sui	Income Tax Expense Benefit Taxable Subsidiaries Amount IncomeTaxExpenseBenefitTaxableSubsidiariesAmount	-337000	USD
CY2018	sui	Income Tax Expense Benefit Taxable Subsidiaries Percent IncomeTaxExpenseBenefitTaxableSubsidiariesPercent	0.046
CY2017	sui	Income Tax Expense Benefit Taxable Subsidiaries Amount IncomeTaxExpenseBenefitTaxableSubsidiariesAmount	-680000	USD
CY2017	sui	Income Tax Expense Benefit Taxable Subsidiaries Percent IncomeTaxExpenseBenefitTaxableSubsidiariesPercent	0.039
CY2018	sui	Income Tax Expense Benefit Other State Tax Flow Through Subsidiaries IncomeTaxExpenseBenefitOtherStateTaxFlowThroughSubsidiaries	425000	USD
CY2017	sui	Income Tax Expense Benefit Other State Tax Flow Through Subsidiaries IncomeTaxExpenseBenefitOtherStateTaxFlowThroughSubsidiaries	544000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	88000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-136000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	18071000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	19739000	USD
CY2018Q4	sui	Deferred Tax Assets Real Estate DeferredTaxAssetsRealEstate	28140000	USD
CY2017Q4	sui	Deferred Tax Assets Real Estate DeferredTaxAssetsRealEstate	23523000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	784000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	1272000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	46995000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	44534000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	44817000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	41932000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	2178000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	2602000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	22406000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	25114000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	22406000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	25114000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	20228000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	22512000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	700000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	700000	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	400000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	105493000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	65021000	USD
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	17369000	USD
CY2018	sui	Incomeloss Attributableto Common Stockholders Allocable To Non Vested Restricted Shares IncomelossAttributabletoCommonStockholdersAllocableToNonVestedRestrictedShares	-831000	USD
CY2017	sui	Incomeloss Attributableto Common Stockholders Allocable To Non Vested Restricted Shares IncomelossAttributabletoCommonStockholdersAllocableToNonVestedRestrictedShares	-455000	USD
CY2016	sui	Incomeloss Attributableto Common Stockholders Allocable To Non Vested Restricted Shares IncomelossAttributabletoCommonStockholdersAllocableToNonVestedRestrictedShares	115000	USD
CY2018	sui	Netincomeattributabletocommonshareholdersafterrestrictedstockallocation Netincomeattributabletocommonshareholdersafterrestrictedstockallocation	104662000	USD
CY2017	sui	Netincomeattributabletocommonshareholdersafterrestrictedstockallocation Netincomeattributabletocommonshareholdersafterrestrictedstockallocation	64566000	USD
CY2016	sui	Netincomeattributabletocommonshareholdersafterrestrictedstockallocation Netincomeattributabletocommonshareholdersafterrestrictedstockallocation	17484000	USD
CY2018	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	831000	USD
CY2017	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	455000	USD
CY2016	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	-115000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	105493000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	65021000	USD
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	17369000	USD
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	81387000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	76084000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	65856000	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2000	shares
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2000	shares
CY2016	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	8000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	651000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	625000	shares
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	457000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	82040000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	76711000	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	66321000	shares
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.29
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.85
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.27
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.29
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.85
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6169000	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6240000	shares
CY2016	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	7099000	shares
CY2018Q1	us-gaap	Revenues Revenues	257975000	USD
CY2018Q2	us-gaap	Revenues Revenues	271434000	USD
CY2018Q3	us-gaap	Revenues Revenues	323412000	USD
CY2018Q4	us-gaap	Revenues Revenues	274004000	USD
CY2018Q1	us-gaap	Costs And Expenses CostsAndExpenses	221871000	USD
CY2018Q2	us-gaap	Costs And Expenses CostsAndExpenses	245091000	USD
CY2018Q3	us-gaap	Costs And Expenses CostsAndExpenses	273040000	USD
CY2018Q4	us-gaap	Costs And Expenses CostsAndExpenses	257131000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	36104000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	26343000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	50372000	USD
CY2018Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	16873000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	29986000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	20408000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	46060000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	9039000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.38
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.25
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.56
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.11
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.38
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.25
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.56
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.11
CY2017Q1	us-gaap	Revenues Revenues	234400000	USD
CY2017Q2	us-gaap	Revenues Revenues	237899000	USD
CY2017Q3	us-gaap	Revenues Revenues	268245000	USD
CY2017Q4	us-gaap	Revenues Revenues	242026000	USD
CY2017Q1	us-gaap	Costs And Expenses CostsAndExpenses	209816000	USD
CY2017Q2	us-gaap	Costs And Expenses CostsAndExpenses	222452000	USD
CY2017Q3	us-gaap	Costs And Expenses CostsAndExpenses	242751000	USD
CY2017Q4	us-gaap	Costs And Expenses CostsAndExpenses	234850000	USD
CY2017Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	24584000	USD
CY2017Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	15447000	USD
CY2017Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	25494000	USD
CY2017Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	7176000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	21104000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	12364000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	24115000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	7438000	USD
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.29
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.16
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.31
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.09
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.29
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.16
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.31
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.09
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	50311000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	10127000	USD
CY2016Q4	us-gaap	Restricted Cash RestrictedCash	17149000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	8164000	USD
CY2018Q4	us-gaap	Restricted Cash RestrictedCash	11951000	USD
CY2017Q4	us-gaap	Restricted Cash RestrictedCash	13382000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	62262000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	23509000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	25313000	USD
CY2017Q4	us-gaap	Estimated Insurance Recoveries EstimatedInsuranceRecoveries	23700000	USD
CY2018	sui	Increase Decrease In Estimated Insurance Recoveries IncreaseDecreaseInEstimatedInsuranceRecoveries	9200000	USD
CY2018	sui	Business Interruption Payments Receivable BusinessInterruptionPaymentsReceivable	2200000	USD
CY2018	sui	Advances From Insurer AdvancesFromInsurer	16400000	USD
CY2018Q4	us-gaap	Estimated Insurance Recoveries EstimatedInsuranceRecoveries	18700000	USD
CY2018	sui	Number Of Communities Impaired NumberOfCommunitiesImpaired	3	community
CY2018	sui	Number Of Communities Impaired NumberOfCommunitiesImpaired	3	community
CY2018	sui	Business Interruption Insurance Policy Term BusinessInterruptionInsurancePolicyTerm	P60M
CY2018Q4	us-gaap	Net Rentable Area NetRentableArea	103100	sqft
CY2018Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Land RealEstateAndAccumulatedDepreciationInitialCostOfLand	1171638000	USD
CY2018Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	4592685000	USD
CY2018Q4	us-gaap	Sec Schedule Iii Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Land SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionLand	30307000	USD
CY2018Q4	us-gaap	Sec Schedule Iii Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Buildings And Improvements SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements	1766316000	USD
CY2018Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Land RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	1201945000	USD
CY2018Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	6359001000	USD
CY2018Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	7560946000	USD
CY2018Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1442630000	USD
CY2017Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	6882879000	USD
CY2016Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	6496339000	USD
CY2015Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	4573522000	USD
CY2018	sui	Real Estate Other Acquisitions And Improvements RealEstateOtherAcquisitionsAndImprovements	414840000	USD
CY2017	sui	Real Estate Other Acquisitions And Improvements RealEstateOtherAcquisitionsAndImprovements	204375000	USD
CY2016	sui	Real Estate Other Acquisitions And Improvements RealEstateOtherAcquisitionsAndImprovements	1822564000	USD
CY2018	us-gaap	Real Estate Other Additions RealEstateOtherAdditions	152672000	USD
CY2017	us-gaap	Real Estate Other Additions RealEstateOtherAdditions	88331000	USD
CY2016	us-gaap	Real Estate Other Additions RealEstateOtherAdditions	47958000	USD
CY2018	us-gaap	Real Estate Improvements RealEstateImprovements	205006000	USD
CY2017	us-gaap	Real Estate Improvements RealEstateImprovements	168315000	USD
CY2016	us-gaap	Real Estate Improvements RealEstateImprovements	113803000	USD
CY2018	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	0	USD
CY2017	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	-10511000	USD
CY2016	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	0	USD
CY2018	sui	Real Estate Dispositions And Other RealEstateDispositionsAndOther	-94451000	USD
CY2017	sui	Real Estate Dispositions And Other RealEstateDispositionsAndOther	-63970000	USD
CY2016	sui	Real Estate Dispositions And Other RealEstateDispositionsAndOther	-61508000	USD
CY2018Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	7560946000	USD
CY2017Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	6882879000	USD
CY2016Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	6496339000	USD
CY2017Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1237525000	USD
CY2016Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1026858000	USD
CY2015Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	852407000	USD
CY2018	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	253952000	USD
CY2017	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	236422000	USD
CY2016	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	201157000	USD
CY2018	us-gaap	Real Estate Accumulated Depreciation Other Deductions RealEstateAccumulatedDepreciationOtherDeductions	0	USD
CY2017	us-gaap	Real Estate Accumulated Depreciation Other Deductions RealEstateAccumulatedDepreciationOtherDeductions	-405000	USD
CY2016	us-gaap	Real Estate Accumulated Depreciation Other Deductions RealEstateAccumulatedDepreciationOtherDeductions	0	USD
CY2018	sui	Real Estate Accumulated Depreciation Dispositions And Other RealEstateAccumulatedDepreciationDispositionsAndOther	-48847000	USD
CY2017	sui	Real Estate Accumulated Depreciation Dispositions And Other RealEstateAccumulatedDepreciationDispositionsAndOther	-25350000	USD
CY2016	sui	Real Estate Accumulated Depreciation Dispositions And Other RealEstateAccumulatedDepreciationDispositionsAndOther	-26706000	USD
CY2018Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1442630000	USD
CY2017Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1237525000	USD
CY2016Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1026858000	USD

Files In Submission

Name	View Source	Status
0000912593-19-000034-index-headers.html	Edgar Link	pending
0000912593-19-000034-index.html	Edgar Link	pending
0000912593-19-000034.txt	Edgar Link	pending
0000912593-19-000034-xbrl.zip	Edgar Link	pending
a5thfloorexpansionpremises.jpg	Edgar Link	pending
exhibit109-sixthleasem.htm	Edgar Link	pending
exhibit211-listofsubsi.htm	Edgar Link	pending
exhibit231-consentofgr.htm	Edgar Link	pending
exhibit311-12312018ceo.htm	Edgar Link	pending
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$SUI
SUN COMMUNITIES INC Stock $sui

2018 Q3 Form 10-K Financial Statement

#000091259319000034 Filed on February 21, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SUI SUN COMMUNITIES INC Stock $sui

2018 Q3 Form 10-K Financial Statement

#000091259319000034 Filed on February 21, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SUI
SUN COMMUNITIES INC Stock $sui