$SUI
SUN COMMUNITIES INC Stock $sui

$sui Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000091259322000039 Filed on February 22, 2022

Income Statement

Concept	2021 Q4	2021 Q2	2021 Q1
Revenue	$542.4M	$603.9M	$442.0M
YoY Change	41.16%	99.13%	42.44%
Cost Of Revenue	$273.5M	$288.6M	$211.6M
YoY Change	53.48%	889.05%	604.58%
Gross Profit	$268.9M	$315.2M	$230.4M
YoY Change	30.48%	15.02%	-17.79%
Gross Profit Margin	49.58%	52.2%	52.13%
Selling, General & Admin	$60.36M	$47.02M	$39.60M
YoY Change	60.95%	59.99%	34.96%
% of Gross Profit	22.44%	14.92%	17.19%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$144.7M	$127.1M	$123.9M
YoY Change	23.23%	45.65%	48.05%
% of Gross Profit	53.8%	40.32%	53.78%
Operating Expenses	$205.0M	$173.4M	$162.9M
YoY Change	32.2%	490.13%	455.2%
Operating Profit	$63.89M	$141.8M	$67.50M
YoY Change	25.28%	-42.05%	-73.1%
Interest Expense	-$40.12M	-$39.10M	-$40.40M
YoY Change	56.71%	86.2%	-23.92%
% of Operating Profit	-62.79%	-27.57%	-59.85%
Other Income/Expense, Net	-$1.099M	-$200.0K	-$500.0K
YoY Change	-50.05%	-75.64%	-48.56%
Pretax Income	$12.56M	$94.00M	$22.80M
YoY Change	-242.76%	237.89%	-37.0%
Income Tax	-$1.165M	$1.311M	-$400.0K
% Of Pretax Income	-9.28%	1.39%	-1.75%
Net Earnings	$15.93M	$110.8M	$24.80M
YoY Change	109.93%	88.08%	-254.17%
Net Earnings / Revenue	2.94%	18.35%	5.61%
Basic Earnings Per Share		$0.98	$0.23
Diluted Earnings Per Share	$135.3K	$0.98	$0.23
COMMON SHARES
Basic Shares Outstanding	116.0M shares	112.1M shares	107.9M shares
Diluted Shares Outstanding		112.1M shares	108.2M shares

Balance Sheet

Concept	2021 Q4	2021 Q2	2021 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$252.7M	$272.6M	$248.0M
YoY Change	25.08%	-44.33%	-44.93%
Cash & Equivalents	$65.80M	$119.6M	$120.2M
Short-Term Investments	$186.9M	$153.0M	$127.8M
Other Short-Term Assets
YoY Change
Inventory	$51.06M	$43.69M	$43.00M
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$235.7M	$281.2M	$270.0M
YoY Change	3.38%	-43.54%	-47.67%
LONG-TERM ASSETS
Property, Plant & Equipment	$11.66B	$10.51B	$10.00B
YoY Change	19.04%	41.03%	36.16%
Goodwill	$495.4M	$448.3M	$438.8M
YoY Change	15.52%
Intangibles	$306.8M
YoY Change	0.37%
Long-Term Investments	$75.10M	$62.32M	$62.20M
YoY Change	27.13%	42.87%	11.07%
Other Assets
YoY Change
Total Long-Term Assets	$13.26B	$11.76B	$11.18B
YoY Change	20.77%	49.79%	45.38%
TOTAL ASSETS
Total Short-Term Assets	$235.7M	$281.2M	$270.0M
Total Long-Term Assets	$13.26B	$11.76B	$11.18B
Total Assets	$13.49B	$12.04B	$11.45B
YoY Change	20.41%	44.23%	39.53%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$237.5M	$214.2M	$160.0M
YoY Change	60.49%	72.74%	44.14%
Accrued Expenses	$129.2M	$77.74M	$47.00M
YoY Change	158.35%	199.0%	80.77%
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	$465.1M	$390.4M	$302.0M
YoY Change	63.18%	69.73%	41.78%
LONG-TERM LIABILITIES
Long-Term Debt	$5.676B	$4.316B	$4.422B
YoY Change	19.22%	27.11%	12.49%
Other Long-Term Liabilities	$333.5M	$393.7M	$378.0M
YoY Change	24.45%	78.14%	86.21%
Total Long-Term Liabilities	$6.010B	$4.709B	$4.800B
YoY Change	19.5%	30.23%	16.11%
TOTAL LIABILITIES
Total Short-Term Liabilities	$465.1M	$390.4M	$302.0M
Total Long-Term Liabilities	$6.010B	$4.709B	$4.800B
Total Liabilities	$6.475B	$5.100B	$5.102B
YoY Change	21.82%	32.62%	17.38%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock	$1.200M	$1.159M	$1.118M
YoY Change	11.52%	17.9%	19.83%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$6.624B	$6.555B	$5.992B
YoY Change
Total Liabilities & Shareholders Equity	$13.49B	$12.04B	$11.45B
YoY Change	20.41%	44.23%	39.53%

Cashflow Statement

Concept	2021 Q4	2021 Q2	2021 Q1
OPERATING ACTIVITIES
Net Income	$15.93M	$110.8M	$24.80M
YoY Change	109.93%	88.08%	-254.17%
Depreciation, Depletion And Amortization	$144.7M	$127.1M	$123.9M
YoY Change	23.23%	45.65%	48.05%
Cash From Operating Activities	$97.56M	$250.2M	$220.5M
YoY Change	15.59%	36.35%	86.06%
INVESTING ACTIVITIES
Capital Expenditures	-$548.9M	-$451.5M	-$141.8M
YoY Change	-67.51%	728.51%	481.15%
Acquisitions			$141.7M
YoY Change			479.81%
Other Investing Activities	-$426.2M	-$127.9M	-$144.2M
YoY Change	224.82%	-11.33%	-0.48%
Cash From Investing Activities	-$975.1M	-$579.5M	-$285.9M
YoY Change	-46.45%	191.49%	68.84%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$1.230B	$539.7M	$537.6M
YoY Change		-14.75%
Debt Paid & Issued, Net			$14.80M
YoY Change			-88.97%
Cash From Financing Activities	870.0M	328.5M	$93.00M
YoY Change	-49.38%	3321.69%	-77.38%
NET CHANGE
Cash From Operating Activities	97.56M	250.2M	$220.5M
Cash From Investing Activities	-975.1M	-579.5M	-$285.9M
Cash From Financing Activities	870.0M	328.5M	$93.00M
Net Change In Cash	-7.533M	-796.0K	$27.60M
YoY Change	-57.2%	-86.04%	-92.33%
FREE CASH FLOW
Cash From Operating Activities	$97.56M	$250.2M	$220.5M
Capital Expenditures	-$548.9M	-$451.5M	-$141.8M
Free Cash Flow	$646.5M	$701.7M	$362.3M
YoY Change	-63.56%	194.85%	153.51%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0000912593
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2020Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2021Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2021Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2021	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2020Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Entity File Number EntityFileNumber	1-12616
CY2021	dei	Entity Registrant Name EntityRegistrantName	SUN COMMUNITIES, INC
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2021	dei	Entity File Number EntityFileNumber	1-12616
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	38-2730780
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	27777 Franklin Rd,
CY2021	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 200,
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Southfield,
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	MI
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	48034
CY2021	dei	City Area Code CityAreaCode	248
CY2021	dei	Local Phone Number LocalPhoneNumber	208-2500
CY2021	dei	Security12b Title Security12bTitle	Common Stock, $0.01 par value
CY2021	dei	Trading Symbol TradingSymbol	SUI
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
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CY2021	dei	Auditor Firm AuditorFirmId	248
CY2021	dei	Auditor Name AuditorName	GRANT THORNTON LLP
CY2021	dei	Auditor Location AuditorLocation	Philadelphia, Pennsylvania
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CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-3743000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	7666000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	4479000	USD
CY2021	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	108104000	USD
CY2020	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	5595000	USD
CY2019	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	0	USD
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-12122000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-5188000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1701000	USD
CY2021	sui	Losson Remeasurementof Notes Receivable LossonRemeasurementofNotesReceivable	685000	USD
CY2020	sui	Losson Remeasurementof Notes Receivable LossonRemeasurementofNotesReceivable	-3275000	USD
CY2019	sui	Losson Remeasurementof Notes Receivable LossonRemeasurementofNotesReceivable	0	USD
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	3992000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1740000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1374000	USD
CY2021	sui	Losson Remeasurementof Investment LossonRemeasurementofInvestment	-160000	USD
CY2020	sui	Losson Remeasurementof Investment LossonRemeasurementofInvestment	-1608000	USD
CY2019	sui	Losson Remeasurementof Investment LossonRemeasurementofInvestment	0	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1236000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	790000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1095000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	91000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1565000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-222000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	413737000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	147451000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	177379000	USD
CY2021	sui	Preferredreturnto Series A1preferred O Punits PreferredreturntoSeriesA1preferredOPunits	-12095000	USD
CY2020	sui	Preferredreturnto Series A1preferred O Punits PreferredreturntoSeriesA1preferredOPunits	-6935000	USD
CY2019	sui	Preferredreturnto Series A1preferred O Punits PreferredreturntoSeriesA1preferredOPunits	-6058000	USD
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-21490000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-8902000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-9768000	USD
CY2021	sui	Net Income Loss Attributable To Parent Net Of Preferred Return NetIncomeLossAttributableToParentNetOfPreferredReturn	380152000	USD
CY2020	sui	Net Income Loss Attributable To Parent Net Of Preferred Return NetIncomeLossAttributableToParentNetOfPreferredReturn	131614000	USD
CY2019	sui	Net Income Loss Attributable To Parent Net Of Preferred Return NetIncomeLossAttributableToParentNetOfPreferredReturn	161553000	USD
CY2021	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2020	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1288000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	380152000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	131614000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	160265000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	112582000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	97521000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	88460000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	115144000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	97522000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	88915000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.36
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.34
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.80
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.36
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.34
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.80
CY2021	us-gaap	Profit Loss ProfitLoss	413737000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	147451000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	177379000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-476000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	4205000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	3328000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	345000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	0	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	413606000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	151656000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	180707000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	21484000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	8598000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	9923000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	392122000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	143058000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	170784000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	413737000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	147451000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	177379000	USD
CY2021	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	49322000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	15156000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	11085000	USD
CY2021	us-gaap	Gain Loss On Disposition Of Real Estate Discontinued Operations GainLossOnDispositionOfRealEstateDiscontinuedOperations	108104000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Real Estate Discontinued Operations GainLossOnDispositionOfRealEstateDiscontinuedOperations	5595000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Real Estate Discontinued Operations GainLossOnDispositionOfRealEstateDiscontinuedOperations	0	USD
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-3743000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	7666000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	4479000	USD
CY2021	sui	Remeasurement Of Marketable Securities RemeasurementOfMarketableSecurities	33457000	USD
CY2020	sui	Remeasurement Of Marketable Securities RemeasurementOfMarketableSecurities	6129000	USD
CY2019	sui	Remeasurement Of Marketable Securities RemeasurementOfMarketableSecurities	34240000	USD
CY2021	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain Or Loss BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss	-11031000	USD
CY2020	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain Or Loss BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss	-2962000	USD
CY2019	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain Or Loss BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss	-1503000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	27988000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	23045000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	17482000	USD
CY2021	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	511738000	USD
CY2020	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	371878000	USD
CY2019	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	313966000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	91000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1565000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-222000	USD
CY2021	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	7844000	USD
CY2020	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	7347000	USD
CY2019	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	7442000	USD
CY2021	sui	Amortization Of Debt Costs Premium AmortizationOfDebtCostsPremium	-844000	USD
CY2020	sui	Amortization Of Debt Costs Premium AmortizationOfDebtCostsPremium	-1467000	USD
CY2019	sui	Amortization Of Debt Costs Premium AmortizationOfDebtCostsPremium	-4962000	USD
CY2021	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	4924000	USD
CY2020	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	3090000	USD
CY2019	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2988000	USD
CY2021	sui	Amortizationof Ground Lease AmortizationofGroundLease	752000	USD
CY2020	sui	Amortizationof Ground Lease AmortizationofGroundLease	752000	USD
CY2019	sui	Amortizationof Ground Lease AmortizationofGroundLease	752000	USD
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-8127000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-5209000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-16505000	USD
CY2021	sui	Gain Loss On Remeasurement Of Note Receivable GainLossOnRemeasurementOfNoteReceivable	685000	USD
CY2020	sui	Gain Loss On Remeasurement Of Note Receivable GainLossOnRemeasurementOfNoteReceivable	-3275000	USD
CY2019	sui	Gain Loss On Remeasurement Of Note Receivable GainLossOnRemeasurementOfNoteReceivable	0	USD
CY2021	sui	Gain Loss On Remeasurement Of Investment In Nonconsolidated Entities GainLossOnRemeasurementOfInvestmentInNonconsolidatedEntities	-160000	USD
CY2020	sui	Gain Loss On Remeasurement Of Investment In Nonconsolidated Entities GainLossOnRemeasurementOfInvestmentInNonconsolidatedEntities	-1608000	USD
CY2019	sui	Gain Loss On Remeasurement Of Investment In Nonconsolidated Entities GainLossOnRemeasurementOfInvestmentInNonconsolidatedEntities	0	USD
CY2021	sui	Payments For Distributions Of Income From Nonconsolidated Entities PaymentsForDistributionsOfIncomeFromNonconsolidatedEntities	3992000	USD
CY2020	sui	Payments For Distributions Of Income From Nonconsolidated Entities PaymentsForDistributionsOfIncomeFromNonconsolidatedEntities	1740000	USD
CY2019	sui	Payments For Distributions Of Income From Nonconsolidated Entities PaymentsForDistributionsOfIncomeFromNonconsolidatedEntities	1374000	USD
CY2021	sui	Distributions From Affiliate DistributionsFromAffiliate	-6246000	USD
CY2020	sui	Distributions From Affiliate DistributionsFromAffiliate	-4088000	USD
CY2019	sui	Distributions From Affiliate DistributionsFromAffiliate	-3049000	USD
CY2021	us-gaap	Increase Decrease In Notes Receivables IncreaseDecreaseInNotesReceivables	1217000	USD
CY2020	us-gaap	Increase Decrease In Notes Receivables IncreaseDecreaseInNotesReceivables	176000	USD
CY2019	us-gaap	Increase Decrease In Notes Receivables IncreaseDecreaseInNotesReceivables	-2988000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	75950000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-5200000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	44322000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	46450000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	21578000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	48248000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	753572000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	543295000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	476734000	USD
CY2021	sui	Payments To Acquire Properties PaymentsToAcquireProperties	672571000	USD
CY2020	sui	Payments To Acquire Properties PaymentsToAcquireProperties	538523000	USD
CY2019	sui	Payments To Acquire Properties PaymentsToAcquireProperties	569261000	USD
CY2021	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	1648690000	USD
CY2020	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	1946015000	USD
CY2019	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	472681000	USD
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	113762000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	55395000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	61337000	USD
CY2021	us-gaap	Proceeds From Real Estate And Real Estate Joint Ventures ProceedsFromRealEstateAndRealEstateJointVentures	162077000	USD
CY2020	us-gaap	Proceeds From Real Estate And Real Estate Joint Ventures ProceedsFromRealEstateAndRealEstateJointVentures	12612000	USD
CY2019	us-gaap	Proceeds From Real Estate And Real Estate Joint Ventures ProceedsFromRealEstateAndRealEstateJointVentures	0	USD
CY2021	sui	Issuanceofnotesandotherreceivables Issuanceofnotesandotherreceivables	242609000	USD
CY2020	sui	Issuanceofnotesandotherreceivables Issuanceofnotesandotherreceivables	45650000	USD
CY2019	sui	Issuanceofnotesandotherreceivables Issuanceofnotesandotherreceivables	18122000	USD
CY2021	sui	Repaymentof Notesand Other Receivables RepaymentofNotesandOtherReceivables	5325000	USD
CY2019	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	440782000	USD
CY2020	sui	Repaymentof Notesand Other Receivables RepaymentofNotesandOtherReceivables	12173000	USD
CY2019	sui	Repaymentof Notesand Other Receivables RepaymentofNotesandOtherReceivables	4542000	USD
CY2021	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	35524000	USD
CY2020	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	11757000	USD
CY2019	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	8995000	USD
CY2021	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	36889000	USD
CY2020	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	35484000	USD
CY2019	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	51747000	USD
CY2021	sui	Distributions Of Capital From Nonconsolidated Entities DistributionsOfCapitalFromNonconsolidatedEntities	16870000	USD
CY2020	sui	Distributions Of Capital From Nonconsolidated Entities DistributionsOfCapitalFromNonconsolidatedEntities	10732000	USD
CY2019	sui	Distributions Of Capital From Nonconsolidated Entities DistributionsOfCapitalFromNonconsolidatedEntities	44470000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2338249000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2486517000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1010457000	USD
CY2021	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	1057481000	USD
CY2020	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	1850611000	USD
CY2021	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	2529000	USD
CY2020	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
CY2019	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
CY2021	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	3762059000	USD
CY2020	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	1585904000	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	3881543000	USD
CY2021	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	3960940000	USD
CY2020	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	1361538000	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	3883950000	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1202539000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	491784000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	923721000	USD
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	76760000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	230330000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	552868000	USD
CY2021	sui	Prepayment Penalty Debt PrepaymentPenaltyDebt	195000	USD
CY2020	sui	Prepayment Penalty Debt PrepaymentPenaltyDebt	6226000	USD
CY2019	sui	Prepayment Penalty Debt PrepaymentPenaltyDebt	18838000	USD
CY2021	sui	Distributions To Stockholders Op Unit Holders And Preferred Op Unit Holders DistributionsToStockholdersOpUnitHoldersAndPreferredOpUnitHolders	390814000	USD
CY2020	sui	Distributions To Stockholders Op Unit Holders And Preferred Op Unit Holders DistributionsToStockholdersOpUnitHoldersAndPreferredOpUnitHolders	313137000	USD
CY2019	sui	Distributions To Stockholders Op Unit Holders And Preferred Op Unit Holders DistributionsToStockholdersOpUnitHoldersAndPreferredOpUnitHolders	276697000	USD
CY2021	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	15678000	USD
CY2020	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	14224000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	6756000	USD
CY2021	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	9830000	USD
CY2020	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	USD
CY2019	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1570391000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2000844000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	505880000	USD
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-157000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	189000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	411000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-14443000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	57811000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-27432000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	92641000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	34830000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	62262000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	78198000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	92641000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	34830000	USD
CY2021	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	4521000	USD
CY2020	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	9424000	USD
CY2019	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	7943000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	147003000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	135986000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	134990000	USD
CY2021	us-gaap	Distributions On Mandatorily Redeemable Securities DistributionsOnMandatorilyRedeemableSecurities	4171000	USD
CY2020	us-gaap	Distributions On Mandatorily Redeemable Securities DistributionsOnMandatorilyRedeemableSecurities	4177000	USD
CY2019	us-gaap	Distributions On Mandatorily Redeemable Securities DistributionsOnMandatorilyRedeemableSecurities	4698000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1270000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1115000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	948000	USD
CY2021	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	0	USD
CY2020	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	0	USD
CY2019	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	107731000	USD
CY2021	us-gaap	Dividends Dividends	11198000	USD
CY2020	us-gaap	Dividends Dividends	15280000	USD
CY2019	us-gaap	Dividends Dividends	8452000	USD
CY2021	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	2918000	USD
CY2020	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	1022000	USD
CY2019	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	11310000	USD
CY2021	us-gaap	Increase Decrease In Assets Held For Sale IncreaseDecreaseInAssetsHeldForSale	705000	USD
CY2020	us-gaap	Increase Decrease In Assets Held For Sale IncreaseDecreaseInAssetsHeldForSale	32145000	USD
CY2019	us-gaap	Increase Decrease In Assets Held For Sale IncreaseDecreaseInAssetsHeldForSale	0	USD
CY2021	sui	Conversion Of Series A Four Preferred Stock ConversionOfSeriesAFourPreferredStock	0	USD
CY2020	sui	Conversion Of Series A Four Preferred Stock ConversionOfSeriesAFourPreferredStock	0	USD
CY2019	sui	Conversion Of Series A Four Preferred Stock ConversionOfSeriesAFourPreferredStock	31739000	USD
CY2021	sui	Release Of Note Receivable And Accrued Interest ReleaseOfNoteReceivableAndAccruedInterest	7270000	USD
CY2020	sui	Release Of Note Receivable And Accrued Interest ReleaseOfNoteReceivableAndAccruedInterest	0	USD
CY2019	sui	Release Of Note Receivable And Accrued Interest ReleaseOfNoteReceivableAndAccruedInterest	0	USD
CY2021	sui	Settlementofmembershipinterest Settlementofmembershipinterest	3643000	USD
CY2020	sui	Settlementofmembershipinterest Settlementofmembershipinterest	37565000	USD
CY2019	sui	Settlementofmembershipinterest Settlementofmembershipinterest	313392000	USD
CY2021	sui	Stock Issued During Period Value New Issues Series A3 Preferred Op Units StockIssuedDuringPeriodValueNewIssuesSeriesA3PreferredOPUnits	0	USD
CY2020	sui	Stock Issued During Period Value New Issues Series A3 Preferred Op Units StockIssuedDuringPeriodValueNewIssuesSeriesA3PreferredOPUnits	837800000	USD
CY2019	sui	Stock Issued During Period Value New Issues Series A3 Preferred Op Units StockIssuedDuringPeriodValueNewIssuesSeriesA3PreferredOPUnits	61900000	USD
CY2021	sui	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Holdback NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationHoldback	9386000	USD
CY2020	sui	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Holdback NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationHoldback	0	USD
CY2021	us-gaap	Temporary Equity Accretion Of Interest TemporaryEquityAccretionOfInterest	215000	USD
CY2021	us-gaap	Temporary Equity Net Income TemporaryEquityNetIncome	5454000	USD
CY2019	sui	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Holdback NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationHoldback	0	USD
CY2021	sui	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Deferred Liability NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationDeferredLiability	4317000	USD
CY2020	sui	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Deferred Liability NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationDeferredLiability	9000000	USD
CY2019	sui	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Deferred Liability NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationDeferredLiability	0	USD
CY2018Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	63592000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3167322000	USD
CY2019	sui	Temporary Equity Acquisition Of Equity Interests TemporaryEquityAcquisitionOfEquityInterests	4451000	USD
CY2019	us-gaap	Temporary Equity Net Income TemporaryEquityNetIncome	1599000	USD
CY2019	sui	Temporary Equity Dividends TemporaryEquityDividends	-2177000	USD
CY2019Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	78004000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3875952000	USD
CY2020	sui	Temporary Equity Acquisition Of Equity Interests TemporaryEquityAcquisitionOfEquityInterests	1485000	USD
CY2020	us-gaap	Temporary Equity Net Income TemporaryEquityNetIncome	519000	USD
CY2020	sui	Temporary Equity Dividends TemporaryEquityDividends	-2509000	USD
CY2020Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	264379000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5627328000	USD
CY2021	sui	Temporary Equity Dividends TemporaryEquityDividends	-7990000	USD
CY2021	us-gaap	Temporary Equity Accretion To Redemption Value TemporaryEquityAccretionToRedemptionValue	154000	USD
CY2021Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	288882000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6730605000	USD
CY2021Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	39	segment
CY2021Q4	us-gaap	Number Of Units In Real Estate Property NumberOfUnitsInRealEstateProperty	204163	segment
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America ("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.</span></div>
CY2021Q1	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2021	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2021	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2021Q4	us-gaap	Debt Issuance Costs Line Of Credit Arrangements Net DebtIssuanceCostsLineOfCreditArrangementsNet	6400000	USD
CY2020Q4	us-gaap	Debt Issuance Costs Line Of Credit Arrangements Net DebtIssuanceCostsLineOfCreditArrangementsNet	11700000	USD
CY2021	sui	Deferred Financing Costsand Discountand Premium Costs DeferredFinancingCostsandDiscountandPremiumCosts	13000000	USD
CY2020	sui	Deferred Financing Costsand Discountand Premium Costs DeferredFinancingCostsandDiscountandPremiumCosts	13900000	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	65800000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	77300000	USD
CY2021Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	58900000	USD
CY2020Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	74500000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	12400000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	15300000	USD
CY2021Q4	us-gaap	Marketable Securities MarketableSecurities	186900000	USD
CY2020Q4	us-gaap	Marketable Securities MarketableSecurities	124700000	USD
CY2021	sui	Cost Method Investment Policy Maximum Percentage Of Ownership CostMethodInvestmentPolicyMaximumPercentageOfOwnership	0.05
CY2021Q4	sui	Home Sale Proceeds HomeSaleProceeds	33500000	USD
CY2020Q4	sui	Home Sale Proceeds HomeSaleProceeds	23600000	USD
CY2021	us-gaap	Advertising Expense AdvertisingExpense	9900000	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	8300000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	6700000	USD
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-3700000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	7700000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	4500000	USD
CY2021	us-gaap	Finance Lease Impairment Loss FinanceLeaseImpairmentLoss	0	USD
CY2021	us-gaap	Revenues Revenues	2272605000	USD
CY2020	us-gaap	Revenues Revenues	1398347000	USD
CY2019	us-gaap	Revenues Revenues	1264037000	USD
CY2021Q4	us-gaap	Number Of Units In Real Estate Property NumberOfUnitsInRealEstateProperty	15816	site
CY2021Q4	sui	Numberof Unitsin Real Estate Property Development Sites NumberofUnitsinRealEstatePropertyDevelopmentSites	1062	development_site
CY2021Q4	sui	Number Of Marinas Owned NumberOfMarinasOwned	2	segment
CY2021	sui	Number Of Mh Communities NumberOfMHCommunities	9	segment
CY2021	sui	Number Of Rv Resorts NumberOfRVResorts	2	segment
CY2021Q4	sui	Asset Acquisition And Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment AssetAcquisitionAndBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	1302586000	USD
CY2021Q4	sui	Asset Acquisition And Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Liabilities Inventory AssetAcquisitionAndBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsLiabilitiesInventory	3956000	USD
CY2021Q4	sui	Asset Acquisition And Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Finite Lived Intangibles AssetAcquisitionAndBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFiniteLivedIntangibles	70603000	USD
CY2021Q4	sui	Asset Acquisition And Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Assets Other Liabilities AssetAcquisitionAndBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssetsOtherLiabilities	-38752000	USD
CY2021Q4	sui	Asset Acquisition And Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net AssetAcquisitionAndBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet	1415897000	USD
CY2021	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	1388255000	USD
CY2021	sui	Asset Acquisition And Business Combination Consideration Transferred Equity Issued And Issuable AssetAcquisitionAndBusinessCombinationConsiderationTransferredEquityIssuedAndIssuable	27642000	USD
CY2021	sui	Asset Acquisition And Business Combination Consideration Transferred AssetAcquisitionAndBusinessCombinationConsiderationTransferred	1415897000	USD
CY2021Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Transaction Costs BusinessAcquisitionCostOfAcquiredEntityTransactionCosts	18000000	USD
CY2021	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	2329947000	USD
CY2020	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	1444998000	USD
CY2021	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	390945000	USD
CY2020	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	138075000	USD
CY2021	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	3.47
CY2020	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	1.42
CY2021	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	3.40
CY2020	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	1.42
CY2021	sui	Number Of Land Parcels Acquired NumberOfLandParcelsAcquired	11	landParcel
CY2021Q4	sui	Number Of Development Sites NumberOfDevelopmentSites	4000	development_site
CY2021	us-gaap	Payments To Acquire Land PaymentsToAcquireLand	172800000	USD
CY2020Q4	us-gaap	Number Of Units In Real Estate Property NumberOfUnitsInRealEstateProperty	45800	site
CY2020Q4	sui	Numberof Unitsin Real Estate Property Development Sites NumberofUnitsinRealEstatePropertyDevelopmentSites	109	development_site
CY2020Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	2339368000	USD
CY2020Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Inventory BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory	9942000	USD
CY2020Q4	sui	Business Combination Recognized Identifiable Assets Acquiredand Liabilities Assumed Current Assets Liabilities Inventory BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsLiabilitiesInventory	720377000	USD
CY2020Q4	sui	Business Combination Recognized Identifiable Assets Acquiredand Liabilities Assumed Other Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOtherLiabilities	-68344000	USD
CY2020Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet	3001343000	USD
CY2020	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	1923855000	USD
CY2020Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Long Term Debt BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebt	837800000	USD
CY2020	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	239688000	USD
CY2020	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	3001343000	USD
CY2020	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	23000000	USD
CY2020Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Transaction Costs BusinessAcquisitionCostOfAcquiredEntityTransactionCosts	13400000	USD
CY2020	sui	Number Of Land Parcels Acquired NumberOfLandParcelsAcquired	8	landParcel
CY2020	us-gaap	Payments To Acquire Land PaymentsToAcquireLand	9700000	USD
CY2020	sui	Number Of Land Parcels Acquired Adjacent To Existing Communities NumberOfLandParcelsAcquiredAdjacentToExistingCommunities	7	landParcel
CY2020Q3	sui	Number Of Housing Sites Sold NumberOfHousingSitesSold	226	site
CY2021Q4	sui	Undrawn Funds On Loans UndrawnFundsOnLoans	40900000	USD
CY2021Q4	sui	Home Sale Proceeds HomeSaleProceeds	33458000	USD
CY2020Q4	sui	Home Sale Proceeds HomeSaleProceeds	23643000	USD
CY2021Q4	sui	Other Receivables Storage And Lease Payments Marina OtherReceivablesStorageAndLeasePaymentsMarina	29318000	USD
CY2020Q4	sui	Other Receivables Storage And Lease Payments Marina OtherReceivablesStorageAndLeasePaymentsMarina	19197000	USD
CY2021Q4	sui	Other Receivables For Rent Water Sewer Usage OtherReceivablesForRentWaterSewerUsage	9952000	USD
CY2020Q4	sui	Other Receivables For Rent Water Sewer Usage OtherReceivablesForRentWaterSewerUsage	7106000	USD
CY2021Q4	sui	Insurance Receivables InsuranceReceivables	9021000	USD
CY2020Q4	sui	Insurance Receivables InsuranceReceivables	13597000	USD
CY2021Q4	us-gaap	Other Receivables OtherReceivables	106463000	USD
CY2020Q4	us-gaap	Other Receivables OtherReceivables	83146000	USD
CY2021Q4	sui	Allowance For Rent Water Sewer Usage Receivables AllowanceForRentWaterSewerUsageReceivables	5500000	USD
CY2020Q4	sui	Allowance For Rent Water Sewer Usage Receivables AllowanceForRentWaterSewerUsageReceivables	7200000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	428128000	USD
CY2020	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	705000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	428833000	USD
CY2021	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	36738000	USD
CY2021	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	29782000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	495353000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	331843000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	141755000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	289386000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	98276000	USD
CY2021Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	116667000	USD
CY2020Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	114501000	USD
CY2021Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	448510000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	141755000	USD
CY2020Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	403887000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	98276000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	43496000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	21379000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	15730000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	33704000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	28750000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	24981000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	24110000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	19095000	USD
CY2021Q4	us-gaap	Equity Method Investments EquityMethodInvestments	75134000	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	59074000	USD
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	3992000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1740000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1374000	USD
CY2021Q4	sui	Variable Interest Entityasa Percentageof Consolidated Assets VariableInterestEntityasaPercentageofConsolidatedAssets	0.049	Rate
CY2020Q4	sui	Variable Interest Entityasa Percentageof Consolidated Assets VariableInterestEntityasaPercentageofConsolidatedAssets	0.043	Rate
CY2021Q4	sui	Variable Interest Entityasa Percentageof Consolidated Liabilities VariableInterestEntityasaPercentageofConsolidatedLiabilities	0.028
CY2020Q4	sui	Variable Interest Entityasa Percentageof Consolidated Liabilities VariableInterestEntityasaPercentageofConsolidatedLiabilities	0.031	Rate
CY2021Q4	sui	Vi Easa Percentageof Total Equity VIEasaPercentageofTotalEquity	0.01
CY2021Q4	us-gaap	Secured Debt SecuredDebt	3380739000	USD
CY2020Q4	us-gaap	Secured Debt SecuredDebt	3489983000	USD
CY2020Q4	us-gaap	Line Of Credit LineOfCredit	1197181000	USD
CY2021Q4	us-gaap	Unsecured Debt UnsecuredDebt	2291095000	USD
CY2020Q4	us-gaap	Unsecured Debt UnsecuredDebt	1267093000	USD
CY2021Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	5671834000	USD
CY2020Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	4757076000	USD
CY2021	sui	Debtweightedaveragetomaturitylength Debtweightedaveragetomaturitylength	P8Y9M18D
CY2020	sui	Debtweightedaveragetomaturitylength Debtweightedaveragetomaturitylength	P9Y4M24D
CY2021Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.03038	Rate
CY2020Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0337	Rate
CY2021Q4	us-gaap	Secured Debt SecuredDebt	3400000000	USD
CY2021Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	1300000000	USD
CY2018Q2	sui	Financial Instruments Subjectto Mandatory Redemption Rate Of Return FinancialInstrumentsSubjecttoMandatoryRedemptionRateOfReturn	0.06
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	5698458	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	141959	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	256484	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	443555	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	1111201	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	567449	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	3177810	USD
CY2020Q2	sui	Temporary Equity Dividends For Term Two Percentage TemporaryEquityDividendsForTermTwoPercentage	0.03
CY2019Q3	sui	Variable Interest Entity Equity Interests Issued VariableInterestEntityEquityInterestsIssued	2400000	USD
CY2021Q2	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	200000000	shares
CY2021Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2021Q2	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2021Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1100000000	USD
CY2021Q1	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	8050000	shares
CY2021Q1	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	140.00
CY2021Q1	sui	Sale Of Stock Number Of Shares Issued In Transaction Direct SaleOfStockNumberOfSharesIssuedInTransactionDirect	4000000	shares
CY2021Q1	sui	Sale Of Stock Number Of Shares Issued In Transaction Forward Equity Sales SaleOfStockNumberOfSharesIssuedInTransactionForwardEquitySales	4050000	shares
CY2021Q1	sui	Sale Of Stock Number Of Shares Issued In Transaction Direct SaleOfStockNumberOfSharesIssuedInTransactionDirect	4000000	shares
CY2021Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	537600000	USD
CY2021Q1	sui	Sale Of Stock Number Of Shares Issued In Transaction Forward Equity Sales SaleOfStockNumberOfSharesIssuedInTransactionForwardEquitySales	4050000	shares
CY2021Q2	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	539700000	USD
CY2020Q4	sui	Number Of Forward Sales Agreements NumberOfForwardSalesAgreements	2	salesAgreement
CY2020Q3	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	9200000	shares
CY2021Q4	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	139.50
CY2021Q4	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1230000000	USD
CY2020Q2	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	4968000	shares
CY2020Q2	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	633100000	USD
CY2021Q4	sui	Aggregate Valueof Sharestobe Issuedin Accordanceto Sales Agreement AggregateValueofSharestobeIssuedinAccordancetoSalesAgreement	1250000000	USD
CY2021Q4	sui	Commission Maximum Percentageof Gross Sales Price Per Share Accordingto Sales Agreement CommissionMaximumPercentageofGrossSalesPricePerShareAccordingtoSalesAgreement	0.02
CY2021Q2	sui	Aggregate Valueof Sharestobe Issuedin Accordanceto Sales Agreement AggregateValueofSharestobeIssuedinAccordancetoSalesAgreement	500000000	USD
CY2021Q2	sui	Commission Maximum Percentageof Gross Sales Price Per Share Accordingto Sales Agreement CommissionMaximumPercentageofGrossSalesPricePerShareAccordingtoSalesAgreement	0.02
CY2021Q4	sui	Number Of Share Based Compensation Plans NumberOfShareBasedCompensationPlans	2	numberOfPlans
CY2021	sui	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Percent Expected To Vest SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsPercentExpectedToVest	0.621
CY2020	sui	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Percent Expected To Vest SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsPercentExpectedToVest	0.576
CY2019	sui	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Percent Expected To Vest SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsPercentExpectedToVest	0.655
CY2018	sui	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Percent Expected To Vest SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsPercentExpectedToVest	0.756
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	27800000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	19000000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	15300000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	28000000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	22700000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	17500000	USD
CY2021Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	60800000	USD
CY2021	sui	Employee Service Sharebased Compensation Nonvested Awards Expected Compensation Cost To Be Recognized In Next Twelve Months EmployeeServiceSharebasedCompensationNonvestedAwardsExpectedCompensationCostToBeRecognizedInNextTwelveMonths	25100	USD
CY2021	sui	Employee Service Sharebased Compensation Nonvested Awards Expected Compensation Cost To Be Recognized In Two Years EmployeeServiceSharebasedCompensationNonvestedAwardsExpectedCompensationCostToBeRecognizedInTwoYears	18300	USD
CY2021	sui	Employee Service Sharebased Compensation Nonvested Awards Expected Compensation Cost To Be Recognized In Three Years EmployeeServiceSharebasedCompensationNonvestedAwardsExpectedCompensationCostToBeRecognizedInThreeYears	10200	USD
CY2021	sui	Employee Service Sharebased Compensation Nonvested Awards Expected Compensation Cost To Be Recognized After Three Years EmployeeServiceSharebasedCompensationNonvestedAwardsExpectedCompensationCostToBeRecognizedAfterThreeYears	7200	USD
CY2021Q1	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2021	us-gaap	Profit Loss ProfitLoss	413737000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	147451000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	177379000	USD
CY2021	sui	Preferredreturnto Series A1preferred O Punits PreferredreturntoSeriesA1preferredOPunits	-12095000	USD
CY2020	sui	Preferredreturnto Series A1preferred O Punits PreferredreturntoSeriesA1preferredOPunits	-6935000	USD
CY2019	sui	Preferredreturnto Series A1preferred O Punits PreferredreturntoSeriesA1preferredOPunits	-6058000	USD
CY2021	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	-21490000	USD
CY2020	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	-8902000	USD
CY2019	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	-9768000	USD
CY2021	sui	Net Income Loss Attributable To Parent Net Of Preferred Return NetIncomeLossAttributableToParentNetOfPreferredReturn	380152000	USD
CY2020	sui	Net Income Loss Attributable To Parent Net Of Preferred Return NetIncomeLossAttributableToParentNetOfPreferredReturn	131614000	USD
CY2019	sui	Net Income Loss Attributable To Parent Net Of Preferred Return NetIncomeLossAttributableToParentNetOfPreferredReturn	161553000	USD
CY2021	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2020	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1288000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	380152000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	131614000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	160265000	USD
CY2021Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	11425457000	USD
CY2020Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	9715791000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	78198000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	92641000	USD
CY2021Q4	us-gaap	Marketable Securities MarketableSecurities	186898000	USD
CY2020Q4	us-gaap	Marketable Securities MarketableSecurities	124726000	USD
CY2021Q4	us-gaap	Inventory Finished Homes InventoryFinishedHomes	51055000	USD
CY2020Q4	us-gaap	Inventory Finished Homes InventoryFinishedHomes	46643000	USD
CY2021Q4	us-gaap	Accounts And Notes Receivable Net AccountsAndNotesReceivableNet	469594000	USD
CY2020Q4	us-gaap	Accounts And Notes Receivable Net AccountsAndNotesReceivableNet	221650000	USD
CY2021Q4	sui	Goodwill Asset GoodwillAsset	495353000	USD
CY2020Q4	sui	Goodwill Asset GoodwillAsset	428833000	USD
CY2021Q4	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	306755000	USD
CY2020Q4	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	305611000	USD
CY2021Q4	us-gaap	Other Assets OtherAssets	480774000	USD
CY2020Q4	us-gaap	Other Assets OtherAssets	270691000	USD
CY2021Q4	us-gaap	Assets Assets	13494084000	USD
CY2020Q4	us-gaap	Assets Assets	11206586000	USD
CY2021Q1	sui	Minimum Percent Of Income From Qualifying Sources To Allow For Real Estate Investment Trust Classification MinimumPercentOfIncomeFromQualifyingSourcesToAllowForRealEstateInvestmentTrustClassification	0.95
CY2021Q1	sui	Required Minimum Percent Of Taxable Income Distributed To Stock Holders RequiredMinimumPercentOfTaxableIncomeDistributedToStockHolders	0.90
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.28
CY2021	sui	Percent Of Total Dividends Paid PercentOfTotalDividendsPaid	1.000
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.12
CY2020	sui	Percent Of Total Dividends Paid PercentOfTotalDividendsPaid	1.000
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.96
CY2019	sui	Percent Of Total Dividends Paid PercentOfTotalDividendsPaid	1.000
CY2021	sui	Ordinary Dividend Taxable Percent OrdinaryDividendTaxablePercent	98.99499
CY2021	sui	Ordinary Tax Dividend Percent Qualified Dividend OrdinaryTaxDividendPercentQualifiedDividend	0.0100501
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	14000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-835000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-3000	USD
CY2021Q4	sui	Deferred Tax Assets Federal DeferredTaxAssetsFederal	0	USD
CY2020Q4	sui	Deferred Tax Assets Federal DeferredTaxAssetsFederal	-613000	USD
CY2019Q4	sui	Deferred Tax Assets Federal DeferredTaxAssetsFederal	0	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1054000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1539000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	919000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-89000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-2000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	168000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	85000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	179000	USD
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	180000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-949000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-222000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1327000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-775000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	873000	USD
CY2021	sui	Income Loss Attributableto Taxable Subsidiaries IncomeLossAttributabletoTaxableSubsidiaries	-5182000	USD
CY2020	sui	Income Loss Attributableto Taxable Subsidiaries IncomeLossAttributabletoTaxableSubsidiaries	8393000	USD
CY2019	sui	Income Loss Attributableto Taxable Subsidiaries IncomeLossAttributabletoTaxableSubsidiaries	-4122000	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-1088000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-1763000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-866000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	195000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.038
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	721000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.086
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	42000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.010
CY2021	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	141000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.027
CY2020	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-236000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.028
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-73000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.018
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	3371000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.650
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	1326000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.158
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	526000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.127
CY2021	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-2062000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.398
CY2020	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-1638000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.195
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	692000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.168
CY2021	sui	Income Tax Expense Benefit Taxable Subsidiaries Amount IncomeTaxExpenseBenefitTaxableSubsidiariesAmount	557000	USD
CY2021	sui	Income Tax Expense Benefit Taxable Subsidiaries Percent IncomeTaxExpenseBenefitTaxableSubsidiariesPercent	-0.107
CY2020	sui	Income Tax Expense Benefit Taxable Subsidiaries Amount IncomeTaxExpenseBenefitTaxableSubsidiariesAmount	-1590000	USD
CY2020	sui	Income Tax Expense Benefit Taxable Subsidiaries Percent IncomeTaxExpenseBenefitTaxableSubsidiariesPercent	0.189
CY2019	sui	Income Tax Expense Benefit Taxable Subsidiaries Amount IncomeTaxExpenseBenefitTaxableSubsidiariesAmount	321000	USD
CY2019	sui	Income Tax Expense Benefit Taxable Subsidiaries Percent IncomeTaxExpenseBenefitTaxableSubsidiariesPercent	-0.077
CY2021	sui	Income Tax Expense Benefit Other State Tax Flow Through Subsidiaries IncomeTaxExpenseBenefitOtherStateTaxFlowThroughSubsidiaries	770000	USD
CY2020	sui	Income Tax Expense Benefit Other State Tax Flow Through Subsidiaries IncomeTaxExpenseBenefitOtherStateTaxFlowThroughSubsidiaries	815000	USD
CY2019	sui	Income Tax Expense Benefit Other State Tax Flow Through Subsidiaries IncomeTaxExpenseBenefitOtherStateTaxFlowThroughSubsidiaries	552000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1327000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-775000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	873000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	26244000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	19504000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	18009000	USD
CY2021Q4	sui	Deferred Tax Assets Real Estate DeferredTaxAssetsRealEstate	23732000	USD
CY2020Q4	sui	Deferred Tax Assets Real Estate DeferredTaxAssetsRealEstate	32968000	USD
CY2019Q4	sui	Deferred Tax Assets Real Estate DeferredTaxAssetsRealEstate	28787000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	77000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	-609000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	395000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	50053000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	51863000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	47191000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	47050000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	44017000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	45342000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	3003000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	7846000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1849000	USD
CY2021Q4	sui	Deferred Tax Liability Basis Difference Domestic Assets DeferredTaxLiabilityBasisDifferenceDomesticAssets	1236000	USD
CY2020Q4	sui	Deferred Tax Liability Basis Difference Domestic Assets DeferredTaxLiabilityBasisDifferenceDomesticAssets	5743000	USD
CY2019Q4	sui	Deferred Tax Liability Basis Difference Domestic Assets DeferredTaxLiabilityBasisDifferenceDomesticAssets	0	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	22497000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	22653000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	22813000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	23733000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	28396000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	22813000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	20730000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	20550000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	20964000	USD
CY2021Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	119000000	USD
CY2021Q4	sui	Operating Loss Carryforwards After Tax OperatingLossCarryforwardsAfterTax	24800000	USD
CY2021Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	0	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1100000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1500000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	900000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	0	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	380152000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	131614000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	160265000	USD
CY2021	sui	Incomeloss Attributableto Common Stockholders Allocable To Non Vested Restricted Shares IncomelossAttributabletoCommonStockholdersAllocableToNonVestedRestrictedShares	2358000	USD
CY2020	sui	Incomeloss Attributableto Common Stockholders Allocable To Non Vested Restricted Shares IncomelossAttributabletoCommonStockholdersAllocableToNonVestedRestrictedShares	795000	USD
CY2019	sui	Incomeloss Attributableto Common Stockholders Allocable To Non Vested Restricted Shares IncomelossAttributabletoCommonStockholdersAllocableToNonVestedRestrictedShares	1170000	USD
CY2021	sui	Netincomeattributabletocommonshareholdersafterrestrictedstockallocation Netincomeattributabletocommonshareholdersafterrestrictedstockallocation	377794000	USD
CY2020	sui	Netincomeattributabletocommonshareholdersafterrestrictedstockallocation Netincomeattributabletocommonshareholdersafterrestrictedstockallocation	130819000	USD
CY2019	sui	Netincomeattributabletocommonshareholdersafterrestrictedstockallocation Netincomeattributabletocommonshareholdersafterrestrictedstockallocation	159095000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	386345000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	130819000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	160265000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	112582000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	97521000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	88460000	shares
CY2021	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1000	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1000	shares
CY2021	sui	Incremental Common Shares Attributable To Dilutive Effect Of Common Equity IncrementalCommonSharesAttributableToDilutiveEffectOfCommonEquity	2562000	shares
CY2020	sui	Incremental Common Shares Attributable To Dilutive Effect Of Common Equity IncrementalCommonSharesAttributableToDilutiveEffectOfCommonEquity	0	shares
CY2019	sui	Incremental Common Shares Attributable To Dilutive Effect Of Common Equity IncrementalCommonSharesAttributableToDilutiveEffectOfCommonEquity	0	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	454000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	115144000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	97522000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	88915000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.36
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.34
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.80
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.36
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.34
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.80
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	4558000	shares
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6945000	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	4852000	shares
CY2021Q4	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	284035000	USD
CY2020Q4	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	52638000	USD
CY2020Q4	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	52638000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	9978000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	194000	USD
CY2021Q4	sui	Operatingand Finance Leases Liability Payments Due Next Twelve Months OperatingandFinanceLeasesLiabilityPaymentsDueNextTwelveMonths	10172000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	9858000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	146000	USD
CY2021Q4	sui	Operatingand Finance Liability Payments Due Year Two OperatingandFinanceLiabilityPaymentsDueYearTwo	10004000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	10204000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	4068000	USD
CY2021Q4	sui	Operatingand Finance Liability Payments Due Year Three OperatingandFinanceLiabilityPaymentsDueYearThree	14272000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	10157000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	0	USD
CY2021Q4	sui	Operatingand Finance Liability Payments Due Year Four OperatingandFinanceLiabilityPaymentsDueYearFour	10157000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	9067000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	0	USD
CY2021Q4	sui	Operatingand Finance Liability Payments Due Year Five OperatingandFinanceLiabilityPaymentsDueYearFive	9067000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	188478000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	0	USD
CY2021Q4	sui	Operatingand Finance Liability Payments Due After Year Five OperatingandFinanceLiabilityPaymentsDueAfterYearFive	188478000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	237742000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	4408000	USD
CY2021Q4	sui	Operatingand Finance Liability Payments Due OperatingandFinanceLiabilityPaymentsDue	242150000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	108567000	USD
CY2021Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	255000	USD
CY2021Q4	sui	Operatingand Finance Liability Undiscounted Excess Amount OperatingandFinanceLiabilityUndiscountedExcessAmount	108822000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	129175000	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	4153000	USD
CY2021Q4	sui	Operatingand Finance Liability OperatingandFinanceLiability	133328000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	4278000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	4350000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	138232000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	48419000	USD
CY2021	sui	Right Of Use Asset Obtained In Exchange For Below Market Operating Lease Liability RightOfUseAssetObtainedInExchangeForBelowMarketOperatingLeaseLiability	93058000	USD
CY2020	sui	Right Of Use Asset Obtained In Exchange For Below Market Operating Lease Liability RightOfUseAssetObtainedInExchangeForBelowMarketOperatingLeaseLiability	27614000	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	4153000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	4334000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	129175000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	49964000	USD
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	214000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	104000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	103000	USD
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	11334000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	4255000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	3474000	USD
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	6609000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	2328000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	1584000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	233000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	17000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	0	USD
CY2021	us-gaap	Lease Cost LeaseCost	18390000	USD
CY2020	us-gaap	Lease Cost LeaseCost	6704000	USD
CY2019	us-gaap	Lease Cost LeaseCost	5161000	USD
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y5M23D
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P33Y9M10D
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0248
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0384
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	6607000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	2712000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	2199000	USD
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	243000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	137000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	120000	USD
CY2021	sui	Operatingand Financing Payments OperatingandFinancingPayments	6850000	USD
CY2020	sui	Operatingand Financing Payments OperatingandFinancingPayments	2849000	USD
CY2019	sui	Operatingand Financing Payments OperatingandFinancingPayments	2319000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	21800000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	18020000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	9334000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	5212000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	1629000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	4731000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	60726000	USD
CY2021Q4	us-gaap	Lease Income LeaseIncome	23041000	USD
CY2020	us-gaap	Lease Income LeaseIncome	3319000	USD
CY2019	us-gaap	Lease Income LeaseIncome	1246000	USD
CY2021Q4	us-gaap	Variable Lease Income VariableLeaseIncome	5736000	USD
CY2020	us-gaap	Variable Lease Income VariableLeaseIncome	2027000	USD
CY2019	us-gaap	Variable Lease Income VariableLeaseIncome	772000	USD
CY2021Q4	sui	Number Of Terminated Ground Leases NumberOfTerminatedGroundLeases	2	segment
CY2021Q4	sui	Contingent Consideration Earn Out Provision ContingentConsiderationEarnOutProvision	17200000	USD
CY2021	sui	Business Combination Incremental Contingent Consideration Expense BusinessCombinationIncrementalContingentConsiderationExpense	10300000	USD
CY2021Q4	sui	Related Party Transaction Equity Interest In Office Space Percentage RelatedPartyTransactionEquityInterestInOfficeSpacePercentage	0.01
CY2021	sui	Related Party Transactions Currentand Future Base Rent RelatedPartyTransactionsCurrentandFutureBaseRent	19.95	USD
CY2021Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	1300000000	USD
CY2020Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	11684603000	USD
CY2019Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	8919600000	USD
CY2018Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	7560946000	USD
CY2021	sui	Real Estate Other Acquisitions And Improvements RealEstateOtherAcquisitionsAndImprovements	1730523000	USD
CY2020	sui	Real Estate Other Acquisitions And Improvements RealEstateOtherAcquisitionsAndImprovements	2410900000	USD
CY2019	sui	Real Estate Other Acquisitions And Improvements RealEstateOtherAcquisitionsAndImprovements	930668000	USD
CY2021	us-gaap	Real Estate Other Additions RealEstateOtherAdditions	201601000	USD
CY2020	us-gaap	Real Estate Other Additions RealEstateOtherAdditions	246454000	USD
CY2019	us-gaap	Real Estate Other Additions RealEstateOtherAdditions	281808000	USD
CY2021	us-gaap	Real Estate Improvements RealEstateImprovements	300290000	USD
CY2020	us-gaap	Real Estate Improvements RealEstateImprovements	249275000	USD
CY2019	us-gaap	Real Estate Improvements RealEstateImprovements	233984000	USD
CY2021	sui	Real Estate Dispositions And Other RealEstateDispositionsAndOther	154313000	USD
CY2020	sui	Real Estate Dispositions And Other RealEstateDispositionsAndOther	141626000	USD
CY2019	sui	Real Estate Dispositions And Other RealEstateDispositionsAndOther	87806000	USD
CY2021Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	13762704000	USD
CY2020Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	11684603000	USD
CY2019Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	8919600000	USD
CY2020Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1968812000	USD
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1686980000	USD
CY2018Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1442630000	USD
CY2021	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	457333000	USD
CY2020	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	344478000	USD
CY2019	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	291605000	USD
CY2021	us-gaap	Real Estate Accumulated Depreciation Other Deductions RealEstateAccumulatedDepreciationOtherDeductions	0	USD
CY2020	us-gaap	Real Estate Accumulated Depreciation Other Deductions RealEstateAccumulatedDepreciationOtherDeductions	7000	USD
CY2019	us-gaap	Real Estate Accumulated Depreciation Other Deductions RealEstateAccumulatedDepreciationOtherDeductions	0	USD
CY2021	sui	Real Estate Accumulated Depreciation Dispositions And Other RealEstateAccumulatedDepreciationDispositionsAndOther	88898000	USD
CY2020	sui	Real Estate Accumulated Depreciation Dispositions And Other RealEstateAccumulatedDepreciationDispositionsAndOther	62639000	USD
CY2019	sui	Real Estate Accumulated Depreciation Dispositions And Other RealEstateAccumulatedDepreciationDispositionsAndOther	47255000	USD
CY2021Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	2337247000	USD
CY2020Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1968812000	USD
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1686980000	USD

Files In Submission

Name	View Source	Status
0000912593-22-000039-index-headers.html	Edgar Link	pending
0000912593-22-000039-index.html	Edgar Link	pending
0000912593-22-000039.txt	Edgar Link	pending
0000912593-22-000039-xbrl.zip	Edgar Link	pending
exhibit1014-suncommunities.htm	Edgar Link	pending
exhibit211listofsubsidiari.htm	Edgar Link	pending
exhibit221-12312021listofi.htm	Edgar Link	pending
exhibit231-consentofgrantt.htm	Edgar Link	pending
exhibit311-12312021ceocert.htm	Edgar Link	pending
exhibit312-12312021cfocert.htm	Edgar Link	pending
exhibit321-12312021ceoandc.htm	Edgar Link	pending
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Financial_Report.xlsx	Edgar Link	pending
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sui-20211231_pre.xml	Edgar Link	unprocessable

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$SUI
SUN COMMUNITIES INC Stock $sui

2021 Q4 Form 10-K Financial Statement

#000091259322000039 Filed on February 22, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SUI SUN COMMUNITIES INC Stock $sui

2021 Q4 Form 10-K Financial Statement

#000091259322000039 Filed on February 22, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SUI
SUN COMMUNITIES INC Stock $sui